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remove webp from source tree and fix some bugs

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Green Sky 2024-04-15 01:10:15 +02:00
parent 8c24234126
commit 14f1d1d37f
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334 changed files with 14 additions and 116122 deletions
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12
external/libwebp/CMakeLists.txt vendored
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@ -1,6 +1,16 @@
cmake_minimum_required(VERSION 3.9 FATAL_ERROR)
include(FetchContent)
if (NOT TARGET libwebp)
set(WEBP_LINK_STATIC ON CACHE INTERNAL "")
FetchContent_Declare(libwebp
GIT_REPOSITORY https://github.com/webmproject/libwebp
GIT_TAG v1.3.2
FIND_PACKAGE_ARGS
)
FetchContent_MakeAvailable(libwebp)
endif()
add_subdirectory(./libwebp EXCLUDE_FROM_ALL)
#add_subdirectory(./libwebp EXCLUDE_FROM_ALL)

240
external/libwebp/libwebp/.cmake-format.py vendored
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@ -1,240 +0,0 @@
# ----------------------------------
# Options affecting listfile parsing
# ----------------------------------
with section("parse"):
# Specify structure for custom cmake functions
additional_commands = { 'foo': { 'flags': ['BAR', 'BAZ'],
'kwargs': {'DEPENDS': '*', 'HEADERS': '*', 'SOURCES': '*'}}}
# Override configurations per-command where available
override_spec = {}
# Specify variable tags.
vartags = []
# Specify property tags.
proptags = []
# -----------------------------
# Options affecting formatting.
# -----------------------------
with section("format"):
# Disable formatting entirely, making cmake-format a no-op
disable = False
# How wide to allow formatted cmake files
line_width = 80
# How many spaces to tab for indent
tab_size = 2
# If true, lines are indented using tab characters (utf-8 0x09) instead of
# <tab_size> space characters (utf-8 0x20). In cases where the layout would
# require a fractional tab character, the behavior of the fractional
# indentation is governed by <fractional_tab_policy>
use_tabchars = False
# If <use_tabchars> is True, then the value of this variable indicates how
# fractional indentions are handled during whitespace replacement. If set to
# 'use-space', fractional indentation is left as spaces (utf-8 0x20). If set
# to `round-up` fractional indentation is replaced with a single tab character
# (utf-8 0x09) effectively shifting the column to the next tabstop
fractional_tab_policy = 'use-space'
# If an argument group contains more than this many sub-groups (parg or kwarg
# groups) then force it to a vertical layout.
max_subgroups_hwrap = 3
# If a positional argument group contains more than this many arguments, then
# force it to a vertical layout.
max_pargs_hwrap = 6
# If a cmdline positional group consumes more than this many lines without
# nesting, then invalidate the layout (and nest)
max_rows_cmdline = 2
# If true, separate flow control names from their parentheses with a space
separate_ctrl_name_with_space = False
# If true, separate function names from parentheses with a space
separate_fn_name_with_space = False
# If a statement is wrapped to more than one line, than dangle the closing
# parenthesis on its own line.
dangle_parens = False
# If the trailing parenthesis must be 'dangled' on its on line, then align it
# to this reference: `prefix`: the start of the statement, `prefix-indent`:
# the start of the statement, plus one indentation level, `child`: align to
# the column of the arguments
dangle_align = 'prefix'
# If the statement spelling length (including space and parenthesis) is
# smaller than this amount, then force reject nested layouts.
min_prefix_chars = 4
# If the statement spelling length (including space and parenthesis) is larger
# than the tab width by more than this amount, then force reject un-nested
# layouts.
max_prefix_chars = 10
# If a candidate layout is wrapped horizontally but it exceeds this many
# lines, then reject the layout.
max_lines_hwrap = 2
# What style line endings to use in the output.
line_ending = 'unix'
# Format command names consistently as 'lower' or 'upper' case
command_case = 'canonical'
# Format keywords consistently as 'lower' or 'upper' case
keyword_case = 'unchanged'
# A list of command names which should always be wrapped
always_wrap = []
# If true, the argument lists which are known to be sortable will be sorted
# lexicographicall
enable_sort = True
# If true, the parsers may infer whether or not an argument list is sortable
# (without annotation).
autosort = False
# By default, if cmake-format cannot successfully fit everything into the
# desired linewidth it will apply the last, most agressive attempt that it
# made. If this flag is True, however, cmake-format will print error, exit
# with non-zero status code, and write-out nothing
require_valid_layout = False
# A dictionary mapping layout nodes to a list of wrap decisions. See the
# documentation for more information.
layout_passes = {}
# ------------------------------------------------
# Options affecting comment reflow and formatting.
# ------------------------------------------------
with section("markup"):
# What character to use for bulleted lists
bullet_char = '*'
# What character to use as punctuation after numerals in an enumerated list
enum_char = '.'
# If comment markup is enabled, don't reflow the first comment block in each
# listfile. Use this to preserve formatting of your copyright/license
# statements.
first_comment_is_literal = True
# If comment markup is enabled, don't reflow any comment block which matches
# this (regex) pattern. Default is `None` (disabled).
literal_comment_pattern = None
# Regular expression to match preformat fences in comments default=
# ``r'^\s*([`~]{3}[`~]*)(.*)$'``
fence_pattern = '^\\s*([`~]{3}[`~]*)(.*)$'
# Regular expression to match rulers in comments default=
# ``r'^\s*[^\w\s]{3}.*[^\w\s]{3}$'``
ruler_pattern = '^\\s*[^\\w\\s]{3}.*[^\\w\\s]{3}$'
# If a comment line matches starts with this pattern then it is explicitly a
# trailing comment for the preceeding argument. Default is '#<'
explicit_trailing_pattern = '#<'
# If a comment line starts with at least this many consecutive hash
# characters, then don't lstrip() them off. This allows for lazy hash rulers
# where the first hash char is not separated by space
hashruler_min_length = 10
# If true, then insert a space between the first hash char and remaining hash
# chars in a hash ruler, and normalize its length to fill the column
canonicalize_hashrulers = True
# enable comment markup parsing and reflow
enable_markup = True
# ----------------------------
# Options affecting the linter
# ----------------------------
with section("lint"):
# a list of lint codes to disable
disabled_codes = []
# regular expression pattern describing valid function names
function_pattern = '[0-9a-z_]+'
# regular expression pattern describing valid macro names
macro_pattern = '[0-9A-Z_]+'
# regular expression pattern describing valid names for variables with global
# (cache) scope
global_var_pattern = '[A-Z][0-9A-Z_]+'
# regular expression pattern describing valid names for variables with global
# scope (but internal semantic)
internal_var_pattern = '_[A-Z][0-9A-Z_]+'
# regular expression pattern describing valid names for variables with local
# scope
local_var_pattern = '[a-z][a-z0-9_]+'
# regular expression pattern describing valid names for privatedirectory
# variables
private_var_pattern = '_[0-9a-z_]+'
# regular expression pattern describing valid names for public directory
# variables
public_var_pattern = '[A-Z][0-9A-Z_]+'
# regular expression pattern describing valid names for function/macro
# arguments and loop variables.
argument_var_pattern = '[a-z][a-z0-9_]+'
# regular expression pattern describing valid names for keywords used in
# functions or macros
keyword_pattern = '[A-Z][0-9A-Z_]+'
# In the heuristic for C0201, how many conditionals to match within a loop in
# before considering the loop a parser.
max_conditionals_custom_parser = 2
# Require at least this many newlines between statements
min_statement_spacing = 1
# Require no more than this many newlines between statements
max_statement_spacing = 2
max_returns = 6
max_branches = 12
max_arguments = 5
max_localvars = 15
max_statements = 50
# -------------------------------
# Options affecting file encoding
# -------------------------------
with section("encode"):
# If true, emit the unicode byte-order mark (BOM) at the start of the file
emit_byteorder_mark = False
# Specify the encoding of the input file. Defaults to utf-8
input_encoding = 'utf-8'
# Specify the encoding of the output file. Defaults to utf-8. Note that cmake
# only claims to support utf-8 so be careful when using anything else
output_encoding = 'utf-8'
# -------------------------------------
# Miscellaneous configurations options.
# -------------------------------------
with section("misc"):
# A dictionary containing any per-command configuration overrides. Currently
# only `command_case` is supported.
per_command = {}

6
external/libwebp/libwebp/.gitattributes vendored
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@ -1,6 +0,0 @@
.gitattributes export-ignore
.gitignore export-ignore
.mailmap export-ignore
*.bat text eol=crlf
*.pdf -text -diff
*.ppm -text -diff

56
external/libwebp/libwebp/.gitignore vendored
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@ -1,56 +0,0 @@
*.l[ao]
*.[ao]
*.pc
.DS_Store
.deps
.idea
.libs
.vscode
/aclocal.m4
/ar-lib
/autom4te.cache
/compile
/config.*
/configure
/depcomp
/dist
/install-sh
/libtool
/ltmain.sh
/missing
/mkinstalldirs
/stamp-h1
Makefile
Makefile.in
examples/anim_diff
examples/anim_dump
examples/[cdv]webp
examples/gif2webp
examples/img2webp
examples/webpinfo
examples/webpmux
src/webp/config.h*
src/webp/stamp-h1
/output
/doc/output
*.idb
*.pdb
/iosbuild
/xcframeworkbuild
/WebP*.*framework
CMakeCache.txt
CMakeFiles/
cmake_install.cmake
.gradle
/build
extras/get_disto
extras/vwebp_sdl
extras/webp_quality
tests/fuzzer/advanced_api_fuzzer
tests/fuzzer/animation_api_fuzzer
tests/fuzzer/animdecoder_fuzzer
tests/fuzzer/animencoder_fuzzer
tests/fuzzer/demux_api_fuzzer
tests/fuzzer/enc_dec_fuzzer
tests/fuzzer/mux_demux_api_fuzzer
tests/fuzzer/simple_api_fuzzer

19
external/libwebp/libwebp/.mailmap vendored
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@ -1,19 +0,0 @@
Johann Koenig <johann.koenig@duck.com>
Johann Koenig <johann.koenig@duck.com> <johannkoenig@google.com>
Mikołaj Zalewski <mikolajz@google.com>
Pascal Massimino <pascal.massimino@gmail.com>
Pascal Massimino <pascal.massimino@gmail.com> <skal@google.com>
Vikas Arora <vikasa@google.com>
<vikasa@google.com> <vikasa@gmail.com>
<vikasa@google.com> <vikaas.arora@gmail.com>
<slobodan.prijic@imgtec.com> <Slobodan.Prijic@imgtec.com>
<vrabaud@google.com> <vincent.rabaud@gmail.com>
Vincent Rabaud <vrabaud@google.com>
Tamar Levy <tamar.levy@intel.com>
<qrczak@google.com> <qrczak>
Hui Su <huisu@google.com>
James Zern <jzern@google.com>
Roberto Alanis <alanisbaez@google.com>
Brian Ledger <brianpl@google.com>
Maryla Ustarroz-Calonge <maryla@google.com>
Yannis Guyon <yguyon@google.com>

441
external/libwebp/libwebp/.pylintrc vendored
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@ -1,441 +0,0 @@
# This Pylint rcfile contains a best-effort configuration to uphold the
# best-practices and style described in the Google Python style guide:
# https://google.github.io/styleguide/pyguide.html
#
# Its canonical open-source location is:
# https://google.github.io/styleguide/pylintrc
[MASTER]
# Files or directories to be skipped. They should be base names, not paths.
ignore=third_party
# Files or directories matching the regex patterns are skipped. The regex
# matches against base names, not paths.
ignore-patterns=
# Pickle collected data for later comparisons.
persistent=no
# List of plugins (as comma separated values of python modules names) to load,
# usually to register additional checkers.
load-plugins=
# Use multiple processes to speed up Pylint.
jobs=4
# Allow loading of arbitrary C extensions. Extensions are imported into the
# active Python interpreter and may run arbitrary code.
unsafe-load-any-extension=no
[MESSAGES CONTROL]
# Only show warnings with the listed confidence levels. Leave empty to show
# all. Valid levels: HIGH, INFERENCE, INFERENCE_FAILURE, UNDEFINED
confidence=
# Enable the message, report, category or checker with the given id(s). You can
# either give multiple identifier separated by comma (,) or put this option
# multiple time (only on the command line, not in the configuration file where
# it should appear only once). See also the "--disable" option for examples.
#enable=
# Disable the message, report, category or checker with the given id(s). You
# can either give multiple identifiers separated by comma (,) or put this
# option multiple times (only on the command line, not in the configuration
# file where it should appear only once).You can also use "--disable=all" to
# disable everything first and then reenable specific checks. For example, if
# you want to run only the similarities checker, you can use "--disable=all
# --enable=similarities". If you want to run only the classes checker, but have
# no Warning level messages displayed, use"--disable=all --enable=classes
# --disable=W"
disable=abstract-method,
apply-builtin,
arguments-differ,
attribute-defined-outside-init,
backtick,
bad-option-value,
basestring-builtin,
buffer-builtin,
c-extension-no-member,
consider-using-enumerate,
cmp-builtin,
cmp-method,
coerce-builtin,
coerce-method,
delslice-method,
div-method,
duplicate-code,
eq-without-hash,
execfile-builtin,
file-builtin,
filter-builtin-not-iterating,
fixme,
getslice-method,
global-statement,
hex-method,
idiv-method,
implicit-str-concat-in-sequence,
import-error,
import-self,
import-star-module-level,
inconsistent-return-statements,
input-builtin,
intern-builtin,
invalid-str-codec,
locally-disabled,
long-builtin,
long-suffix,
map-builtin-not-iterating,
misplaced-comparison-constant,
missing-function-docstring,
metaclass-assignment,
next-method-called,
next-method-defined,
no-absolute-import,
no-else-break,
no-else-continue,
no-else-raise,
no-else-return,
no-init, # added
no-member,
no-name-in-module,
no-self-use,
nonzero-method,
oct-method,
old-division,
old-ne-operator,
old-octal-literal,
old-raise-syntax,
parameter-unpacking,
print-statement,
raising-string,
range-builtin-not-iterating,
raw_input-builtin,
rdiv-method,
reduce-builtin,
relative-import,
reload-builtin,
round-builtin,
setslice-method,
signature-differs,
standarderror-builtin,
suppressed-message,
sys-max-int,
too-few-public-methods,
too-many-ancestors,
too-many-arguments,
too-many-boolean-expressions,
too-many-branches,
too-many-instance-attributes,
too-many-locals,
too-many-nested-blocks,
too-many-public-methods,
too-many-return-statements,
too-many-statements,
trailing-newlines,
unichr-builtin,
unicode-builtin,
unnecessary-pass,
unpacking-in-except,
useless-else-on-loop,
useless-object-inheritance,
useless-suppression,
using-cmp-argument,
wrong-import-order,
xrange-builtin,
zip-builtin-not-iterating,
[REPORTS]
# Set the output format. Available formats are text, parseable, colorized, msvs
# (visual studio) and html. You can also give a reporter class, eg
# mypackage.mymodule.MyReporterClass.
output-format=text
# Put messages in a separate file for each module / package specified on the
# command line instead of printing them on stdout. Reports (if any) will be
# written in a file name "pylint_global.[txt|html]". This option is deprecated
# and it will be removed in Pylint 2.0.
files-output=no
# Tells whether to display a full report or only the messages
reports=no
# Python expression which should return a note less than 10 (10 is the highest
# note). You have access to the variables errors warning, statement which
# respectively contain the number of errors / warnings messages and the total
# number of statements analyzed. This is used by the global evaluation report
# (RP0004).
evaluation=10.0 - ((float(5 * error + warning + refactor + convention) / statement) * 10)
# Template used to display messages. This is a python new-style format string
# used to format the message information. See doc for all details
#msg-template=
[BASIC]
# Good variable names which should always be accepted, separated by a comma
good-names=main,_,PRESUBMIT
# Bad variable names which should always be refused, separated by a comma
bad-names=
# Colon-delimited sets of names that determine each other's naming style when
# the name regexes allow several styles.
name-group=
# Include a hint for the correct naming format with invalid-name
include-naming-hint=no
# List of decorators that produce properties, such as abc.abstractproperty. Add
# to this list to register other decorators that produce valid properties.
property-classes=abc.abstractproperty,cached_property.cached_property,cached_property.threaded_cached_property,cached_property.cached_property_with_ttl,cached_property.threaded_cached_property_with_ttl
# Regular expression matching correct function names
function-rgx=^(?:(?P<exempt>setUp|tearDown|setUpModule|tearDownModule)|(?P<camel_case>_?[A-Z][a-zA-Z0-9]*)|(?P<snake_case>_?[a-z][a-z0-9_]*))$
# Regular expression matching correct variable names
variable-rgx=^[a-z][a-z0-9_]*$
# Regular expression matching correct constant names
const-rgx=^(_?[A-Z][A-Z0-9_]*|__[a-z0-9_]+__|_?[a-z][a-z0-9_]*)$
# Regular expression matching correct attribute names
attr-rgx=^_{0,2}[a-z][a-z0-9_]*$
# Regular expression matching correct argument names
argument-rgx=^[a-z][a-z0-9_]*$
# Regular expression matching correct class attribute names
class-attribute-rgx=^(_?[A-Z][A-Z0-9_]*|__[a-z0-9_]+__|_?[a-z][a-z0-9_]*)$
# Regular expression matching correct inline iteration names
inlinevar-rgx=^[a-z][a-z0-9_]*$
# Regular expression matching correct class names
class-rgx=^_?[A-Z][a-zA-Z0-9]*$
# Regular expression matching correct module names
module-rgx=^(_?[a-z][a-z0-9_]*|__init__)$
# Regular expression matching correct method names
method-rgx=(?x)^(?:(?P<exempt>_[a-z0-9_]+__|runTest|setUp|tearDown|setUpTestCase|tearDownTestCase|setupSelf|tearDownClass|setUpClass|(test|assert)_*[A-Z0-9][a-zA-Z0-9_]*|next)|(?P<camel_case>_{0,2}[A-Z][a-zA-Z0-9_]*)|(?P<snake_case>_{0,2}[a-z][a-z0-9_]*))$
# Regular expression which should only match function or class names that do
# not require a docstring.
no-docstring-rgx=(__.*__|main|test.*|.*test|.*Test)$
# Minimum line length for functions/classes that require docstrings, shorter
# ones are exempt.
docstring-min-length=10
[TYPECHECK]
# List of decorators that produce context managers, such as
# contextlib.contextmanager. Add to this list to register other decorators that
# produce valid context managers.
contextmanager-decorators=contextlib.contextmanager,contextlib2.contextmanager
# Tells whether missing members accessed in mixin class should be ignored. A
# mixin class is detected if its name ends with "mixin" (case insensitive).
ignore-mixin-members=yes
# List of module names for which member attributes should not be checked
# (useful for modules/projects where namespaces are manipulated during runtime
# and thus existing member attributes cannot be deduced by static analysis. It
# supports qualified module names, as well as Unix pattern matching.
ignored-modules=
# List of class names for which member attributes should not be checked (useful
# for classes with dynamically set attributes). This supports the use of
# qualified names.
ignored-classes=optparse.Values,thread._local,_thread._local
# List of members which are set dynamically and missed by pylint inference
# system, and so shouldn't trigger E1101 when accessed. Python regular
# expressions are accepted.
generated-members=
[FORMAT]
# Maximum number of characters on a single line.
max-line-length=80
# TODO(https://github.com/PyCQA/pylint/issues/3352): Direct pylint to exempt
# lines made too long by directives to pytype.
# Regexp for a line that is allowed to be longer than the limit.
ignore-long-lines=(?x)(
^\s*(\#\ )?<?https?://\S+>?$|
^\s*(from\s+\S+\s+)?import\s+.+$)
# Allow the body of an if to be on the same line as the test if there is no
# else.
single-line-if-stmt=yes
# List of optional constructs for which whitespace checking is disabled. `dict-
# separator` is used to allow tabulation in dicts, etc.: {1 : 1,\n222: 2}.
# `trailing-comma` allows a space between comma and closing bracket: (a, ).
# `empty-line` allows space-only lines.
no-space-check=
# Maximum number of lines in a module
max-module-lines=99999
# String used as indentation unit. The internal Google style guide mandates 2
# spaces. Google's externaly-published style guide says 4, consistent with
# PEP 8. Here, we use 2 spaces, for conformity with many open-sourced Google
# projects (like TensorFlow).
indent-string=' '
# Number of spaces of indent required inside a hanging or continued line.
indent-after-paren=4
# Expected format of line ending, e.g. empty (any line ending), LF or CRLF.
expected-line-ending-format=
[MISCELLANEOUS]
# List of note tags to take in consideration, separated by a comma.
notes=TODO
[STRING]
# This flag controls whether inconsistent-quotes generates a warning when the
# character used as a quote delimiter is used inconsistently within a module.
check-quote-consistency=yes
[VARIABLES]
# Tells whether we should check for unused import in __init__ files.
init-import=no
# A regular expression matching the name of dummy variables (i.e. expectedly
# not used).
dummy-variables-rgx=^\*{0,2}(_$|unused_|dummy_)
# List of additional names supposed to be defined in builtins. Remember that
# you should avoid to define new builtins when possible.
additional-builtins=
# List of strings which can identify a callback function by name. A callback
# name must start or end with one of those strings.
callbacks=cb_,_cb
# List of qualified module names which can have objects that can redefine
# builtins.
redefining-builtins-modules=six,six.moves,past.builtins,future.builtins,functools
[LOGGING]
# Logging modules to check that the string format arguments are in logging
# function parameter format
logging-modules=logging,absl.logging,tensorflow.io.logging
[SIMILARITIES]
# Minimum lines number of a similarity.
min-similarity-lines=4
# Ignore comments when computing similarities.
ignore-comments=yes
# Ignore docstrings when computing similarities.
ignore-docstrings=yes
# Ignore imports when computing similarities.
ignore-imports=no
[SPELLING]
# Spelling dictionary name. Available dictionaries: none. To make it working
# install python-enchant package.
spelling-dict=
# List of comma separated words that should not be checked.
spelling-ignore-words=
# A path to a file that contains private dictionary; one word per line.
spelling-private-dict-file=
# Tells whether to store unknown words to indicated private dictionary in
# --spelling-private-dict-file option instead of raising a message.
spelling-store-unknown-words=no
[IMPORTS]
# Deprecated modules which should not be used, separated by a comma
deprecated-modules=regsub,
TERMIOS,
Bastion,
rexec,
sets
# Create a graph of every (i.e. internal and external) dependencies in the
# given file (report RP0402 must not be disabled)
import-graph=
# Create a graph of external dependencies in the given file (report RP0402 must
# not be disabled)
ext-import-graph=
# Create a graph of internal dependencies in the given file (report RP0402 must
# not be disabled)
int-import-graph=
# Force import order to recognize a module as part of the standard
# compatibility libraries.
known-standard-library=
# Force import order to recognize a module as part of a third party library.
known-third-party=enchant, absl
# Analyse import fallback blocks. This can be used to support both Python 2 and
# 3 compatible code, which means that the block might have code that exists
# only in one or another interpreter, leading to false positives when analysed.
analyse-fallback-blocks=no
[CLASSES]
# List of method names used to declare (i.e. assign) instance attributes.
defining-attr-methods=__init__,
__new__,
setUp
# List of member names, which should be excluded from the protected access
# warning.
exclude-protected=_asdict,
_fields,
_replace,
_source,
_make
# List of valid names for the first argument in a class method.
valid-classmethod-first-arg=cls,
class_
# List of valid names for the first argument in a metaclass class method.
valid-metaclass-classmethod-first-arg=mcs
[EXCEPTIONS]
# Exceptions that will emit a warning when being caught. Defaults to
# "Exception"
overgeneral-exceptions=StandardError,
Exception,
BaseException

2
external/libwebp/libwebp/.style.yapf vendored
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@ -1,2 +0,0 @@
[style]
based_on_style = yapf

60
external/libwebp/libwebp/AUTHORS vendored
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@ -1,60 +0,0 @@
Contributors:
- Aidan O'Loan (aidanol at gmail dot com)
- Alan Browning (browning at google dot com)
- Alexandru Ardelean (ardeleanalex at gmail dot com)
- Brian Ledger (brianpl at google dot com)
- Charles Munger (clm at google dot com)
- Cheng Yi (cyi at google dot com)
- Christian Duvivier (cduvivier at google dot com)
- Christopher Degawa (ccom at randomderp dot com)
- Clement Courbet (courbet at google dot com)
- Djordje Pesut (djordje dot pesut at imgtec dot com)
- Frank Barchard (fbarchard at google dot com)
- Hui Su (huisu at google dot com)
- H. Vetinari (h dot vetinari at gmx dot com)
- Ilya Kurdyukov (jpegqs at gmail dot com)
- Ingvar Stepanyan (rreverser at google dot com)
- James Zern (jzern at google dot com)
- Jan Engelhardt (jengelh at medozas dot de)
- Jehan (jehan at girinstud dot io)
- Jeremy Maitin-Shepard (jbms at google dot com)
- Johann Koenig (johann dot koenig at duck dot com)
- Jovan Zelincevic (jovan dot zelincevic at imgtec dot com)
- Jyrki Alakuijala (jyrki at google dot com)
- Konstantin Ivlev (tomskside at gmail dot com)
- Lode Vandevenne (lode at google dot com)
- Lou Quillio (louquillio at google dot com)
- Mans Rullgard (mans at mansr dot com)
- Marcin Kowalczyk (qrczak at google dot com)
- Martin Olsson (mnemo at minimum dot se)
- Maryla Ustarroz-Calonge (maryla at google dot com)
- Mikołaj Zalewski (mikolajz at google dot com)
- Mislav Bradac (mislavm at google dot com)
- Nico Weber (thakis at chromium dot org)
- Noel Chromium (noel at chromium dot org)
- Nozomi Isozaki (nontan at pixiv dot co dot jp)
- Oliver Wolff (oliver dot wolff at qt dot io)
- Owen Rodley (orodley at google dot com)
- Parag Salasakar (img dot mips1 at gmail dot com)
- Pascal Massimino (pascal dot massimino at gmail dot com)
- Paweł Hajdan, Jr (phajdan dot jr at chromium dot org)
- Pierre Joye (pierre dot php at gmail dot com)
- Roberto Alanis (alanisbaez at google dot com)
- Sam Clegg (sbc at chromium dot org)
- Scott Hancher (seh at google dot com)
- Scott LaVarnway (slavarnway at google dot com)
- Scott Talbot (s at chikachow dot org)
- Slobodan Prijic (slobodan dot prijic at imgtec dot com)
- Somnath Banerjee (somnath dot banerjee at gmail dot com)
- Sriraman Tallam (tmsriram at google dot com)
- Tamar Levy (tamar dot levy at intel dot com)
- Thiago Perrotta (tperrotta at google dot com)
- Timothy Gu (timothygu99 at gmail dot com)
- Urvang Joshi (urvang at google dot com)
- Vikas Arora (vikasa at google dot com)
- Vincent Rabaud (vrabaud at google dot com)
- Vlad Tsyrklevich (vtsyrklevich at chromium dot org)
- Wan-Teh Chang (wtc at google dot com)
- Yang Zhang (yang dot zhang at arm dot com)
- Yannis Guyon (yguyon at google dot com)
- Zhi An Ng (zhin at chromium dot org)

295
external/libwebp/libwebp/Android.mk vendored
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@ -1,295 +0,0 @@
# Ignore this file during non-NDK builds.
ifdef NDK_ROOT
LOCAL_PATH := $(call my-dir)
WEBP_CFLAGS := -Wall -DANDROID -DHAVE_MALLOC_H -DHAVE_PTHREAD -DWEBP_USE_THREAD
WEBP_CFLAGS += -fvisibility=hidden
ifeq ($(APP_OPTIM),release)
WEBP_CFLAGS += -finline-functions -ffast-math \
-ffunction-sections -fdata-sections
ifeq ($(findstring clang,$(NDK_TOOLCHAIN_VERSION)),)
WEBP_CFLAGS += -frename-registers -s
endif
endif
# mips32 fails to build with clang from r14b
# https://bugs.chromium.org/p/webp/issues/detail?id=343
ifeq ($(findstring clang,$(NDK_TOOLCHAIN_VERSION)),clang)
ifeq ($(TARGET_ARCH),mips)
clang_version := $(shell $(TARGET_CC) --version)
ifneq ($(findstring clang version 3,$(clang_version)),)
WEBP_CFLAGS += -no-integrated-as
endif
endif
endif
ifneq ($(findstring armeabi-v7a, $(TARGET_ARCH_ABI)),)
# Setting LOCAL_ARM_NEON will enable -mfpu=neon which may cause illegal
# instructions to be generated for armv7a code. Instead target the neon code
# specifically.
NEON := c.neon
USE_CPUFEATURES := yes
WEBP_CFLAGS += -DHAVE_CPU_FEATURES_H
else
NEON := c
endif
sharpyuv_srcs := \
sharpyuv/sharpyuv.c \
sharpyuv/sharpyuv_cpu.c \
sharpyuv/sharpyuv_csp.c \
sharpyuv/sharpyuv_dsp.c \
sharpyuv/sharpyuv_gamma.c \
sharpyuv/sharpyuv_neon.$(NEON) \
sharpyuv/sharpyuv_sse2.c \
dec_srcs := \
src/dec/alpha_dec.c \
src/dec/buffer_dec.c \
src/dec/frame_dec.c \
src/dec/idec_dec.c \
src/dec/io_dec.c \
src/dec/quant_dec.c \
src/dec/tree_dec.c \
src/dec/vp8_dec.c \
src/dec/vp8l_dec.c \
src/dec/webp_dec.c \
demux_srcs := \
src/demux/anim_decode.c \
src/demux/demux.c \
dsp_dec_srcs := \
src/dsp/alpha_processing.c \
src/dsp/alpha_processing_mips_dsp_r2.c \
src/dsp/alpha_processing_neon.$(NEON) \
src/dsp/alpha_processing_sse2.c \
src/dsp/alpha_processing_sse41.c \
src/dsp/cpu.c \
src/dsp/dec.c \
src/dsp/dec_clip_tables.c \
src/dsp/dec_mips32.c \
src/dsp/dec_mips_dsp_r2.c \
src/dsp/dec_msa.c \
src/dsp/dec_neon.$(NEON) \
src/dsp/dec_sse2.c \
src/dsp/dec_sse41.c \
src/dsp/filters.c \
src/dsp/filters_mips_dsp_r2.c \
src/dsp/filters_msa.c \
src/dsp/filters_neon.$(NEON) \
src/dsp/filters_sse2.c \
src/dsp/lossless.c \
src/dsp/lossless_mips_dsp_r2.c \
src/dsp/lossless_msa.c \
src/dsp/lossless_neon.$(NEON) \
src/dsp/lossless_sse2.c \
src/dsp/lossless_sse41.c \
src/dsp/rescaler.c \
src/dsp/rescaler_mips32.c \
src/dsp/rescaler_mips_dsp_r2.c \
src/dsp/rescaler_msa.c \
src/dsp/rescaler_neon.$(NEON) \
src/dsp/rescaler_sse2.c \
src/dsp/upsampling.c \
src/dsp/upsampling_mips_dsp_r2.c \
src/dsp/upsampling_msa.c \
src/dsp/upsampling_neon.$(NEON) \
src/dsp/upsampling_sse2.c \
src/dsp/upsampling_sse41.c \
src/dsp/yuv.c \
src/dsp/yuv_mips32.c \
src/dsp/yuv_mips_dsp_r2.c \
src/dsp/yuv_neon.$(NEON) \
src/dsp/yuv_sse2.c \
src/dsp/yuv_sse41.c \
dsp_enc_srcs := \
src/dsp/cost.c \
src/dsp/cost_mips32.c \
src/dsp/cost_mips_dsp_r2.c \
src/dsp/cost_neon.$(NEON) \
src/dsp/cost_sse2.c \
src/dsp/enc.c \
src/dsp/enc_mips32.c \
src/dsp/enc_mips_dsp_r2.c \
src/dsp/enc_msa.c \
src/dsp/enc_neon.$(NEON) \
src/dsp/enc_sse2.c \
src/dsp/enc_sse41.c \
src/dsp/lossless_enc.c \
src/dsp/lossless_enc_mips32.c \
src/dsp/lossless_enc_mips_dsp_r2.c \
src/dsp/lossless_enc_msa.c \
src/dsp/lossless_enc_neon.$(NEON) \
src/dsp/lossless_enc_sse2.c \
src/dsp/lossless_enc_sse41.c \
src/dsp/ssim.c \
src/dsp/ssim_sse2.c \
enc_srcs := \
src/enc/alpha_enc.c \
src/enc/analysis_enc.c \
src/enc/backward_references_cost_enc.c \
src/enc/backward_references_enc.c \
src/enc/config_enc.c \
src/enc/cost_enc.c \
src/enc/filter_enc.c \
src/enc/frame_enc.c \
src/enc/histogram_enc.c \
src/enc/iterator_enc.c \
src/enc/near_lossless_enc.c \
src/enc/picture_enc.c \
src/enc/picture_csp_enc.c \
src/enc/picture_psnr_enc.c \
src/enc/picture_rescale_enc.c \
src/enc/picture_tools_enc.c \
src/enc/predictor_enc.c \
src/enc/quant_enc.c \
src/enc/syntax_enc.c \
src/enc/token_enc.c \
src/enc/tree_enc.c \
src/enc/vp8l_enc.c \
src/enc/webp_enc.c \
mux_srcs := \
src/mux/anim_encode.c \
src/mux/muxedit.c \
src/mux/muxinternal.c \
src/mux/muxread.c \
utils_dec_srcs := \
src/utils/bit_reader_utils.c \
src/utils/color_cache_utils.c \
src/utils/filters_utils.c \
src/utils/huffman_utils.c \
src/utils/palette.c \
src/utils/quant_levels_dec_utils.c \
src/utils/random_utils.c \
src/utils/rescaler_utils.c \
src/utils/thread_utils.c \
src/utils/utils.c \
utils_enc_srcs := \
src/utils/bit_writer_utils.c \
src/utils/huffman_encode_utils.c \
src/utils/quant_levels_utils.c \
################################################################################
# libwebpdecoder
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
$(dec_srcs) \
$(dsp_dec_srcs) \
$(utils_dec_srcs) \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_EXPORT_C_INCLUDES += $(LOCAL_PATH)/src
# prefer arm over thumb mode for performance gains
LOCAL_ARM_MODE := arm
ifeq ($(USE_CPUFEATURES),yes)
LOCAL_STATIC_LIBRARIES := cpufeatures
endif
LOCAL_MODULE := webpdecoder_static
include $(BUILD_STATIC_LIBRARY)
ifeq ($(ENABLE_SHARED),1)
include $(CLEAR_VARS)
LOCAL_WHOLE_STATIC_LIBRARIES := webpdecoder_static
LOCAL_MODULE := webpdecoder
include $(BUILD_SHARED_LIBRARY)
endif # ENABLE_SHARED=1
################################################################################
# libwebp
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
$(sharpyuv_srcs) \
$(dsp_enc_srcs) \
$(enc_srcs) \
$(utils_enc_srcs) \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_EXPORT_C_INCLUDES += $(LOCAL_PATH)/src $(LOCAL_PATH)
# prefer arm over thumb mode for performance gains
LOCAL_ARM_MODE := arm
LOCAL_WHOLE_STATIC_LIBRARIES := webpdecoder_static
LOCAL_MODULE := webp
ifeq ($(ENABLE_SHARED),1)
include $(BUILD_SHARED_LIBRARY)
else
include $(BUILD_STATIC_LIBRARY)
endif
################################################################################
# libwebpdemux
include $(CLEAR_VARS)
LOCAL_SRC_FILES := $(demux_srcs)
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_EXPORT_C_INCLUDES += $(LOCAL_PATH)/src
# prefer arm over thumb mode for performance gains
LOCAL_ARM_MODE := arm
LOCAL_MODULE := webpdemux
ifeq ($(ENABLE_SHARED),1)
LOCAL_SHARED_LIBRARIES := webp
include $(BUILD_SHARED_LIBRARY)
else
LOCAL_STATIC_LIBRARIES := webp
include $(BUILD_STATIC_LIBRARY)
endif
################################################################################
# libwebpmux
include $(CLEAR_VARS)
LOCAL_SRC_FILES := $(mux_srcs)
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_EXPORT_C_INCLUDES += $(LOCAL_PATH)/src
# prefer arm over thumb mode for performance gains
LOCAL_ARM_MODE := arm
LOCAL_MODULE := webpmux
ifeq ($(ENABLE_SHARED),1)
LOCAL_SHARED_LIBRARIES := webp
include $(BUILD_SHARED_LIBRARY)
else
LOCAL_STATIC_LIBRARIES := webp
include $(BUILD_STATIC_LIBRARY)
endif
################################################################################
WEBP_SRC_PATH := $(LOCAL_PATH)
include $(WEBP_SRC_PATH)/imageio/Android.mk
include $(WEBP_SRC_PATH)/examples/Android.mk
ifeq ($(USE_CPUFEATURES),yes)
$(call import-module,android/cpufeatures)
endif
endif # NDK_ROOT

802
external/libwebp/libwebp/CMakeLists.txt vendored
View File

@ -1,802 +0,0 @@
# Copyright (c) 2020 Google LLC.
#
# Use of this source code is governed by a BSD-style license
# that can be found in the LICENSE file in the root of the source
# tree. An additional intellectual property rights grant can be found
# in the file PATENTS. All contributing project authors may
# be found in the AUTHORS file in the root of the source tree.
if(APPLE)
cmake_minimum_required(VERSION 3.17)
else()
cmake_minimum_required(VERSION 3.7)
endif()
if(POLICY CMP0072)
cmake_policy(SET CMP0072 NEW)
endif()
project(WebP C)
# Options for coder / decoder executables.
if(BUILD_SHARED_LIBS)
set(WEBP_LINK_STATIC_DEFAULT OFF)
else()
set(WEBP_LINK_STATIC_DEFAULT ON)
endif()
option(WEBP_LINK_STATIC
"Link using static libraries. If OFF, use dynamic libraries."
${WEBP_LINK_STATIC_DEFAULT})
if(NOT EMSCRIPTEN)
# Disable SIMD on Emscripten by default, as it's a new unstable Wasm feature.
# Users can still explicitly opt-in to make a SIMD-enabled build.
set(WEBP_ENABLE_SIMD_DEFAULT ON)
endif()
option(WEBP_ENABLE_SIMD "Enable any SIMD optimization."
${WEBP_ENABLE_SIMD_DEFAULT})
option(WEBP_BUILD_ANIM_UTILS "Build animation utilities." ON)
option(WEBP_BUILD_CWEBP "Build the cwebp command line tool." ON)
option(WEBP_BUILD_DWEBP "Build the dwebp command line tool." ON)
option(WEBP_BUILD_GIF2WEBP "Build the gif2webp conversion tool." ON)
option(WEBP_BUILD_IMG2WEBP "Build the img2webp animation tool." ON)
option(WEBP_BUILD_VWEBP "Build the vwebp viewer tool." ON)
option(WEBP_BUILD_WEBPINFO "Build the webpinfo command line tool." ON)
option(WEBP_BUILD_LIBWEBPMUX "Build the libwebpmux library." ON)
option(WEBP_BUILD_WEBPMUX "Build the webpmux command line tool." ON)
option(WEBP_BUILD_EXTRAS "Build extras." ON)
option(WEBP_BUILD_WEBP_JS "Emscripten build of webp.js." OFF)
option(WEBP_USE_THREAD "Enable threading support" ON)
option(WEBP_NEAR_LOSSLESS "Enable near-lossless encoding" ON)
option(WEBP_ENABLE_SWAP_16BIT_CSP "Enable byte swap for 16 bit colorspaces."
OFF)
set(WEBP_BITTRACE "0" CACHE STRING "Bit trace mode (0=none, 1=bit, 2=bytes)")
set_property(CACHE WEBP_BITTRACE PROPERTY STRINGS 0 1 2)
if(WEBP_LINK_STATIC)
if(WIN32)
set(CMAKE_FIND_LIBRARY_SUFFIXES .lib .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
else()
set(CMAKE_FIND_LIBRARY_SUFFIXES .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
endif()
set(CMAKE_POSITION_INDEPENDENT_CODE ON)
# vwebp does not compile on Ubuntu with static libraries so disabling it for
# now.
set(WEBP_BUILD_VWEBP OFF)
endif()
# Option needed for handling Unicode file names on Windows.
if(WIN32)
option(WEBP_UNICODE "Build Unicode executables." ON)
endif()
if(WEBP_BUILD_WEBP_JS)
set(WEBP_BUILD_ANIM_UTILS OFF)
set(WEBP_BUILD_CWEBP OFF)
set(WEBP_BUILD_DWEBP OFF)
set(WEBP_BUILD_GIF2WEBP OFF)
set(WEBP_BUILD_IMG2WEBP OFF)
set(WEBP_BUILD_VWEBP OFF)
set(WEBP_BUILD_WEBPINFO OFF)
set(WEBP_BUILD_WEBPMUX OFF)
set(WEBP_BUILD_EXTRAS OFF)
set(WEBP_USE_THREAD OFF)
if(WEBP_ENABLE_SIMD)
message(NOTICE
"wasm2js does not support SIMD, disabling webp.js generation.")
endif()
endif()
set(SHARPYUV_DEP_LIBRARIES)
set(SHARPYUV_DEP_INCLUDE_DIRS)
set(WEBP_DEP_LIBRARIES)
set(WEBP_DEP_INCLUDE_DIRS)
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE "Release"
CACHE STRING "Build type: Release, Debug, MinSizeRel or RelWithDebInfo"
FORCE)
endif()
# Include dependencies.
if(WEBP_BUILD_ANIM_UTILS
OR WEBP_BUILD_CWEBP
OR WEBP_BUILD_DWEBP
OR WEBP_BUILD_EXTRAS
OR WEBP_BUILD_GIF2WEBP
OR WEBP_BUILD_IMG2WEBP)
set(WEBP_FIND_IMG_LIBS TRUE)
else()
set(WEBP_FIND_IMG_LIBS FALSE)
endif()
include(cmake/deps.cmake)
include(GNUInstallDirs)
if(BUILD_SHARED_LIBS AND NOT DEFINED CMAKE_INSTALL_RPATH)
# Set the rpath to match autoconf/libtool behavior. Note this must be set
# before target creation.
set(CMAKE_INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR}")
endif()
# ##############################################################################
# Options.
if(WEBP_ENABLE_SWAP_16BIT_CSP)
add_definitions(-DWEBP_SWAP_16BIT_CSP=1)
endif()
if(NOT WEBP_BITTRACE STREQUAL "0")
add_definitions(-DBITTRACE=${WEBP_BITTRACE})
endif()
if(WEBP_UNICODE)
# Windows recommends setting both UNICODE and _UNICODE.
add_definitions(-DUNICODE -D_UNICODE)
endif()
if(MSVC AND BUILD_SHARED_LIBS)
add_definitions(-DWEBP_DLL)
endif()
# pkg-config variables used by *.pc.in.
set(prefix ${CMAKE_INSTALL_PREFIX})
set(exec_prefix "\${prefix}")
if(IS_ABSOLUTE "${CMAKE_INSTALL_LIBDIR}")
set(libdir "${CMAKE_INSTALL_LIBDIR}")
else()
set(libdir "\${exec_prefix}/${CMAKE_INSTALL_LIBDIR}")
endif()
if(IS_ABSOLUTE "${CMAKE_INSTALL_INCLUDEDIR}")
set(includedir "${CMAKE_INSTALL_INCLUDEDIR}")
else()
set(includedir "\${prefix}/${CMAKE_INSTALL_INCLUDEDIR}")
endif()
set(PTHREAD_LIBS ${CMAKE_THREAD_LIBS_INIT})
set(INSTALLED_LIBRARIES)
if(MSVC)
# match the naming convention used by nmake
set(webp_libname_prefix "lib")
set(CMAKE_SHARED_LIBRARY_PREFIX "${webp_libname_prefix}")
set(CMAKE_IMPORT_LIBRARY_PREFIX "${webp_libname_prefix}")
set(CMAKE_STATIC_LIBRARY_PREFIX "${webp_libname_prefix}")
endif()
set(CMAKE_C_VISIBILITY_PRESET hidden)
# ##############################################################################
# Android only.
if(ANDROID)
include_directories(${ANDROID_NDK}/sources/android/cpufeatures)
add_library(cpufeatures-webp STATIC
${ANDROID_NDK}/sources/android/cpufeatures/cpu-features.c)
list(APPEND INSTALLED_LIBRARIES cpufeatures-webp)
target_link_libraries(cpufeatures-webp dl)
set(SHARPYUV_DEP_LIBRARIES ${SHARPYUV_DEP_LIBRARIES} cpufeatures-webp)
set(WEBP_DEP_LIBRARIES ${WEBP_DEP_LIBRARIES} cpufeatures-webp)
set(cpufeatures_include_dir ${ANDROID_NDK}/sources/android/cpufeatures)
set(SHARPYUV_DEP_INCLUDE_DIRS ${SHARPYUV_DEP_INCLUDE_DIRS}
${cpufeatures_include_dir})
set(WEBP_DEP_INCLUDE_DIRS ${WEBP_DEP_INCLUDE_DIRS} ${cpufeatures_include_dir})
add_definitions(-DHAVE_CPU_FEATURES_H=1)
set(HAVE_CPU_FEATURES_H 1)
else()
set(HAVE_CPU_FEATURES_H 0)
endif()
function(configure_pkg_config FILE)
configure_file("${CMAKE_CURRENT_SOURCE_DIR}/${FILE}.in"
"${CMAKE_CURRENT_BINARY_DIR}/${FILE}" @ONLY)
if(HAVE_MATH_LIBRARY)
# MSVC doesn't have libm
file(READ ${CMAKE_CURRENT_BINARY_DIR}/${FILE} data)
string(REPLACE "-lm" "" data ${data})
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/${FILE} ${data})
endif()
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/${FILE}"
DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
endfunction()
# ##############################################################################
# WebP source files. Read the Makefile.am to get the source files.
# We expect the Makefiles to define the sources as defined in the first regex.
# E.g.: libimagedec_la_SOURCES = image_dec.c image_dec.h
function(parse_Makefile_am FOLDER VAR SRC_REGEX)
file(READ ${FOLDER}/Makefile.am MAKEFILE_AM)
string(REGEX MATCHALL "${SRC_REGEX}_SOURCES[ ]*\\+?=[ ]+[0-9a-z\\._ ]*"
FILES_PER_LINE ${MAKEFILE_AM})
set(SRCS ${${VAR}})
foreach(FILES ${FILES_PER_LINE})
string(FIND ${FILES} "=" OFFSET)
math(EXPR OFFSET "${OFFSET} + 2")
string(SUBSTRING ${FILES} ${OFFSET} -1 FILES)
if(FILES)
string(REGEX MATCHALL "[0-9a-z\\._]+" FILES ${FILES})
foreach(FILE ${FILES})
list(APPEND SRCS ${FOLDER}/${FILE})
endforeach()
endif()
endforeach()
set(${VAR} ${SRCS} PARENT_SCOPE)
endfunction()
set(WEBP_SRC_DIR ${CMAKE_CURRENT_SOURCE_DIR}/src)
parse_makefile_am(${WEBP_SRC_DIR}/dec "WEBP_DEC_SRCS" "")
parse_makefile_am(${WEBP_SRC_DIR}/demux "WEBP_DEMUX_SRCS" "")
parse_makefile_am(${WEBP_SRC_DIR}/dsp "WEBP_DSP_COMMON_SRCS" "COMMON")
parse_makefile_am(${WEBP_SRC_DIR}/dsp "WEBP_DSP_ENC_SRCS" "ENC")
parse_makefile_am(${WEBP_SRC_DIR}/dsp "WEBP_DSP_ENC_SRCS" "dsp_[^ ]*")
parse_makefile_am(${WEBP_SRC_DIR}/dsp "WEBP_DSP_DEC_SRCS" "decode_[^ ]*")
parse_makefile_am(${WEBP_SRC_DIR}/enc "WEBP_ENC_SRCS" "")
parse_makefile_am(${WEBP_SRC_DIR}/utils "WEBP_UTILS_COMMON_SRCS" "COMMON")
parse_makefile_am(${WEBP_SRC_DIR}/utils "WEBP_UTILS_ENC_SRCS" "ENC")
parse_makefile_am(${WEBP_SRC_DIR}/utils "WEBP_UTILS_DEC_SRCS" "decode_[^ ]*")
# Remove the files specific to SIMD we don't use.
foreach(FILE ${WEBP_SIMD_FILES_NOT_TO_INCLUDE})
list(REMOVE_ITEM WEBP_DSP_ENC_SRCS ${FILE})
list(REMOVE_ITEM WEBP_DSP_DEC_SRCS ${FILE})
endforeach()
# Generate the config.h file.
configure_file(${CMAKE_CURRENT_LIST_DIR}/cmake/config.h.in
${CMAKE_CURRENT_BINARY_DIR}/src/webp/config.h @ONLY)
add_definitions(-DHAVE_CONFIG_H)
# Set the version numbers.
macro(set_version FILE TARGET_NAME NAME_IN_MAKEFILE)
file(READ ${CMAKE_CURRENT_SOURCE_DIR}/${FILE} SOURCE_FILE)
string(REGEX MATCH
"${NAME_IN_MAKEFILE}_la_LDFLAGS[^\n]* -version-info [0-9:]+" TMP
${SOURCE_FILE})
string(REGEX MATCH "[0-9:]+" TMP ${TMP})
string(REGEX REPLACE ":" " " LT_VERSION ${TMP})
# See the libtool docs for more information:
# https://www.gnu.org/software/libtool/manual/libtool.html#Updating-version-info
#
# c=<current>, a=<age>, r=<revision>
#
# libtool generates a .so file as .so.[c-a].a.r, while -version-info c:r:a is
# passed to libtool.
#
# We set FULL = [c-a].a.r and MAJOR = [c-a].
separate_arguments(LT_VERSION)
list(GET LT_VERSION 0 LT_CURRENT)
list(GET LT_VERSION 1 LT_REVISION)
list(GET LT_VERSION 2 LT_AGE)
math(EXPR LT_CURRENT_MINUS_AGE "${LT_CURRENT} - ${LT_AGE}")
set_target_properties(
${TARGET_NAME}
PROPERTIES VERSION ${LT_CURRENT_MINUS_AGE}.${LT_AGE}.${LT_REVISION}
SOVERSION ${LT_CURRENT_MINUS_AGE})
if(APPLE)
# For compatibility, set MACHO_COMPATIBILITY_VERSION and
# MACHO_CURRENT_VERSION to match libtool. These properties were introduced
# in 3.17:
# https://cmake.org/cmake/help/latest/prop_tgt/MACHO_COMPATIBILITY_VERSION.html
math(EXPR LIBWEBP_MACHO_COMPATIBILITY_VERSION "${LT_CURRENT} + 1")
set_target_properties(
${TARGET_NAME}
PROPERTIES MACHO_COMPATIBILITY_VERSION
${LIBWEBP_MACHO_COMPATIBILITY_VERSION}
MACHO_CURRENT_VERSION
${LIBWEBP_MACHO_COMPATIBILITY_VERSION}.${LT_REVISION})
endif()
endmacro()
# ##############################################################################
# Build the webpdecoder library.
# Creates a source file with an unused stub function in $CMAKE_BINARY_DIR and
# adds it to the specified target. Currently used only with Xcode.
#
# See also:
# https://cmake.org/cmake/help/v3.18/command/add_library.html#object-libraries
# "Some native build systems (such as Xcode) may not like targets that have only
# object files, so consider adding at least one real source file to any target
# that references $<TARGET_OBJECTS:objlib>."
function(libwebp_add_stub_file TARGET)
set(stub_source_dir "${CMAKE_BINARY_DIR}")
set(stub_source_file "${stub_source_dir}/libwebp_${TARGET}_stub.c")
set(stub_source_code
"// Generated file. DO NOT EDIT!\n"
"// C source file created for target ${TARGET}.\n"
"void libwebp_${TARGET}_stub_function(void)\;\n"
"void libwebp_${TARGET}_stub_function(void) {}\n")
file(WRITE "${stub_source_file}" ${stub_source_code})
target_sources(${TARGET} PRIVATE ${stub_source_file})
endfunction()
parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/sharpyuv "WEBP_SHARPYUV_SRCS" "")
add_library(sharpyuv ${WEBP_SHARPYUV_SRCS})
target_link_libraries(sharpyuv ${SHARPYUV_DEP_LIBRARIES})
set_version(sharpyuv/Makefile.am sharpyuv sharpyuv)
target_include_directories(
sharpyuv PRIVATE ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}
${CMAKE_CURRENT_SOURCE_DIR}/src)
set_target_properties(
sharpyuv
PROPERTIES PUBLIC_HEADER "${CMAKE_CURRENT_SOURCE_DIR}/sharpyuv/sharpyuv.h;\
${CMAKE_CURRENT_SOURCE_DIR}/sharpyuv/sharpyuv_csp.h")
configure_pkg_config("sharpyuv/libsharpyuv.pc")
install(
TARGETS sharpyuv
EXPORT ${PROJECT_NAME}Targets
PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/webp/sharpyuv
INCLUDES
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
${CMAKE_INSTALL_INCLUDEDIR}/webp
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
if(MSVC)
# avoid security warnings for e.g., fopen() used in the examples.
add_definitions(-D_CRT_SECURE_NO_WARNINGS)
else()
add_compile_options(-Wall)
endif()
include_directories(${WEBP_DEP_INCLUDE_DIRS})
add_library(webpdecode OBJECT ${WEBP_DEC_SRCS})
target_include_directories(webpdecode PRIVATE ${CMAKE_CURRENT_BINARY_DIR}
${CMAKE_CURRENT_SOURCE_DIR})
add_library(webpdspdecode OBJECT ${WEBP_DSP_COMMON_SRCS} ${WEBP_DSP_DEC_SRCS})
target_include_directories(webpdspdecode PRIVATE ${CMAKE_CURRENT_BINARY_DIR}
${CMAKE_CURRENT_SOURCE_DIR})
add_library(webputilsdecode OBJECT ${WEBP_UTILS_COMMON_SRCS}
${WEBP_UTILS_DEC_SRCS})
target_include_directories(webputilsdecode PRIVATE ${CMAKE_CURRENT_BINARY_DIR}
${CMAKE_CURRENT_SOURCE_DIR})
add_library(
webpdecoder $<TARGET_OBJECTS:webpdecode> $<TARGET_OBJECTS:webpdspdecode>
$<TARGET_OBJECTS:webputilsdecode>)
if(XCODE)
libwebp_add_stub_file(webpdecoder)
endif()
target_link_libraries(webpdecoder ${WEBP_DEP_LIBRARIES})
target_include_directories(
webpdecoder PRIVATE ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}
INTERFACE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
set_target_properties(
webpdecoder
PROPERTIES PUBLIC_HEADER "${CMAKE_CURRENT_SOURCE_DIR}/src/webp/decode.h;\
${CMAKE_CURRENT_SOURCE_DIR}/src/webp/types.h")
configure_pkg_config("src/libwebpdecoder.pc")
# Build the webp library.
add_library(webpencode OBJECT ${WEBP_ENC_SRCS})
target_include_directories(
webpencode PRIVATE ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}
${CMAKE_CURRENT_SOURCE_DIR}/src)
add_library(webpdsp OBJECT ${WEBP_DSP_COMMON_SRCS} ${WEBP_DSP_DEC_SRCS}
${WEBP_DSP_ENC_SRCS})
target_include_directories(webpdsp PRIVATE ${CMAKE_CURRENT_BINARY_DIR}
${CMAKE_CURRENT_SOURCE_DIR})
add_library(webputils OBJECT ${WEBP_UTILS_COMMON_SRCS} ${WEBP_UTILS_DEC_SRCS}
${WEBP_UTILS_ENC_SRCS})
target_include_directories(webputils PRIVATE ${CMAKE_CURRENT_BINARY_DIR}
${CMAKE_CURRENT_SOURCE_DIR})
add_library(webp $<TARGET_OBJECTS:webpdecode> $<TARGET_OBJECTS:webpdsp>
$<TARGET_OBJECTS:webpencode> $<TARGET_OBJECTS:webputils>)
target_link_libraries(webp sharpyuv)
if(XCODE)
libwebp_add_stub_file(webp)
endif()
target_link_libraries(webp ${WEBP_DEP_LIBRARIES})
target_include_directories(
webp PRIVATE ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR}
PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>
$<INSTALL_INTERFACE:include>)
set_target_properties(
webp
PROPERTIES PUBLIC_HEADER "${CMAKE_CURRENT_SOURCE_DIR}/src/webp/decode.h;\
${CMAKE_CURRENT_SOURCE_DIR}/src/webp/encode.h;\
${CMAKE_CURRENT_SOURCE_DIR}/src/webp/types.h")
# Make sure the OBJECT libraries are built with position independent code (it is
# not ON by default).
set_target_properties(webpdecode webpdspdecode webputilsdecode webpencode
webpdsp webputils PROPERTIES POSITION_INDEPENDENT_CODE ON)
configure_pkg_config("src/libwebp.pc")
# Build the webp demux library.
add_library(webpdemux ${WEBP_DEMUX_SRCS})
target_link_libraries(webpdemux webp)
target_include_directories(
webpdemux PRIVATE ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR}
PUBLIC $<INSTALL_INTERFACE:include>)
set_target_properties(
webpdemux
PROPERTIES
PUBLIC_HEADER
"${CMAKE_CURRENT_SOURCE_DIR}/src/webp/decode.h;\
${CMAKE_CURRENT_SOURCE_DIR}/src/webp/demux.h;\
${CMAKE_CURRENT_SOURCE_DIR}/src/webp/mux_types.h;\
${CMAKE_CURRENT_SOURCE_DIR}/src/webp/types.h")
configure_pkg_config("src/demux/libwebpdemux.pc")
set_version(src/Makefile.am webp webp)
set_version(src/Makefile.am webpdecoder webpdecoder)
set_version(src/demux/Makefile.am webpdemux webpdemux)
file(READ ${CMAKE_CURRENT_SOURCE_DIR}/configure.ac CONFIGURE_FILE)
string(REGEX MATCH "AC_INIT\\([^\n]*\\[[0-9\\.]+\\]" TMP ${CONFIGURE_FILE})
string(REGEX MATCH "[0-9\\.]+" PROJECT_VERSION ${TMP})
# Define the libraries to install.
list(APPEND INSTALLED_LIBRARIES webpdecoder webp webpdemux)
# Deal with SIMD. Change the compile flags for SIMD files we use.
list(LENGTH WEBP_SIMD_FILES_TO_INCLUDE WEBP_SIMD_FILES_TO_INCLUDE_LENGTH)
math(EXPR WEBP_SIMD_FILES_TO_INCLUDE_RANGE
"${WEBP_SIMD_FILES_TO_INCLUDE_LENGTH}-1")
foreach(I_FILE RANGE ${WEBP_SIMD_FILES_TO_INCLUDE_RANGE})
list(GET WEBP_SIMD_FILES_TO_INCLUDE ${I_FILE} FILE)
list(GET WEBP_SIMD_FLAGS_TO_INCLUDE ${I_FILE} SIMD_COMPILE_FLAG)
set_source_files_properties(${FILE} PROPERTIES COMPILE_FLAGS
${SIMD_COMPILE_FLAG})
endforeach()
if(NOT WEBP_BUILD_LIBWEBPMUX)
set(WEBP_BUILD_GIF2WEBP OFF)
set(WEBP_BUILD_IMG2WEBP OFF)
set(WEBP_BUILD_WEBPMUX OFF)
endif()
if(WEBP_BUILD_GIF2WEBP AND NOT GIF_FOUND)
set(WEBP_BUILD_GIF2WEBP OFF)
endif()
if(WEBP_BUILD_ANIM_UTILS AND NOT GIF_FOUND)
set(WEBP_BUILD_ANIM_UTILS OFF)
endif()
# Build the executables if asked for.
if(WEBP_BUILD_ANIM_UTILS
OR WEBP_BUILD_CWEBP
OR WEBP_BUILD_DWEBP
OR WEBP_BUILD_GIF2WEBP
OR WEBP_BUILD_IMG2WEBP
OR WEBP_BUILD_VWEBP
OR WEBP_BUILD_WEBPMUX
OR WEBP_BUILD_WEBPINFO)
# Example utility library.
parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "EXAMPLEUTIL_SRCS"
"example_util_[^ ]*")
list(APPEND EXAMPLEUTIL_SRCS ${CMAKE_CURRENT_SOURCE_DIR}/examples/stopwatch.h)
add_library(exampleutil STATIC ${EXAMPLEUTIL_SRCS})
target_include_directories(
exampleutil PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/src>)
parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/imageio "IMAGEIOUTILS_SRCS"
"imageio_util_[^ ]*")
add_library(imageioutil STATIC ${IMAGEIOUTILS_SRCS})
target_link_libraries(imageioutil webp)
target_link_libraries(exampleutil imageioutil)
# Image-decoding utility library.
parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/imageio "IMAGEDEC_SRCS"
"imagedec_[^ ]*")
add_library(imagedec STATIC ${IMAGEDEC_SRCS})
target_link_libraries(imagedec imageioutil webpdemux webp
${WEBP_DEP_IMG_LIBRARIES})
# Image-encoding utility library.
parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/imageio "IMAGEENC_SRCS"
"imageenc_[^ ]*")
add_library(imageenc STATIC ${IMAGEENC_SRCS})
target_link_libraries(imageenc imageioutil webp)
set_property(
TARGET exampleutil imageioutil imagedec imageenc
PROPERTY INCLUDE_DIRECTORIES ${CMAKE_CURRENT_SOURCE_DIR}/src
${CMAKE_CURRENT_BINARY_DIR}/src)
endif()
if(WEBP_BUILD_DWEBP)
# dwebp
parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "DWEBP_SRCS" "dwebp")
add_executable(dwebp ${DWEBP_SRCS})
target_link_libraries(dwebp exampleutil imagedec imageenc)
target_include_directories(dwebp PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src)
install(TARGETS dwebp RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
endif()
if(WEBP_BUILD_CWEBP)
# cwebp
parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "CWEBP_SRCS" "cwebp")
add_executable(cwebp ${CWEBP_SRCS})
target_link_libraries(cwebp exampleutil imagedec webp)
target_include_directories(cwebp PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src
${CMAKE_CURRENT_SOURCE_DIR})
install(TARGETS cwebp RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
endif()
if(WEBP_BUILD_LIBWEBPMUX)
parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/src/mux "WEBP_MUX_SRCS" "")
add_library(libwebpmux ${WEBP_MUX_SRCS})
target_link_libraries(libwebpmux webp)
target_include_directories(libwebpmux PRIVATE ${CMAKE_CURRENT_BINARY_DIR}
${CMAKE_CURRENT_SOURCE_DIR})
set_version(src/mux/Makefile.am libwebpmux webpmux)
set_target_properties(
libwebpmux
PROPERTIES PUBLIC_HEADER "${CMAKE_CURRENT_SOURCE_DIR}/src/webp/mux.h;\
${CMAKE_CURRENT_SOURCE_DIR}/src/webp/mux_types.h;\
${CMAKE_CURRENT_SOURCE_DIR}/src/webp/types.h;")
set_target_properties(libwebpmux PROPERTIES OUTPUT_NAME webpmux)
list(APPEND INSTALLED_LIBRARIES libwebpmux)
configure_pkg_config("src/mux/libwebpmux.pc")
endif()
if(WEBP_BUILD_GIF2WEBP)
# gif2webp
include_directories(${WEBP_DEP_GIF_INCLUDE_DIRS})
parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "GIF2WEBP_SRCS"
"gif2webp")
add_executable(gif2webp ${GIF2WEBP_SRCS})
target_link_libraries(gif2webp exampleutil imageioutil webp libwebpmux
${WEBP_DEP_GIF_LIBRARIES})
target_include_directories(gif2webp PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src)
install(TARGETS gif2webp RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
endif()
if(WEBP_BUILD_IMG2WEBP)
# img2webp
include_directories(${WEBP_DEP_IMG_INCLUDE_DIRS})
parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "IMG2WEBP_SRCS"
"img2webp")
add_executable(img2webp ${IMG2WEBP_SRCS})
target_link_libraries(img2webp exampleutil imagedec imageioutil webp
libwebpmux)
target_include_directories(img2webp PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src
${CMAKE_CURRENT_SOURCE_DIR})
install(TARGETS img2webp RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
endif()
if(WEBP_BUILD_VWEBP)
# vwebp
find_package(GLUT)
if(GLUT_FOUND)
include_directories(${WEBP_DEP_IMG_INCLUDE_DIRS})
parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "VWEBP_SRCS" "vwebp")
add_executable(vwebp ${VWEBP_SRCS})
target_link_libraries(
vwebp
${OPENGL_LIBRARIES}
exampleutil
GLUT::GLUT
imageioutil
webp
webpdemux)
target_include_directories(
vwebp PRIVATE ${GLUT_INCLUDE_DIR} ${CMAKE_CURRENT_BINARY_DIR}/src
${OPENGL_INCLUDE_DIR})
install(TARGETS vwebp RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
if(${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
check_c_compiler_flag("-Wno-deprecated-declarations" HAS_NO_DEPRECATED)
if(HAS_NO_DEPRECATED)
target_compile_options(vwebp PRIVATE "-Wno-deprecated-declarations")
endif()
endif()
endif()
endif()
if(WEBP_BUILD_WEBPINFO)
# webpinfo
include_directories(${WEBP_DEP_IMG_INCLUDE_DIRS})
parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "WEBPINFO_SRCS"
"webpinfo")
add_executable(webpinfo ${WEBPINFO_SRCS})
target_link_libraries(webpinfo exampleutil imageioutil)
target_include_directories(webpinfo PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src
${CMAKE_CURRENT_SOURCE_DIR}/src)
install(TARGETS webpinfo RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
endif()
if(WEBP_BUILD_WEBPMUX)
# webpmux
parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "WEBPMUX_SRCS"
"webpmux")
add_executable(webpmux ${WEBPMUX_SRCS})
target_link_libraries(webpmux exampleutil imageioutil libwebpmux webp)
target_include_directories(webpmux PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src)
install(TARGETS webpmux RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
endif()
if(WEBP_BUILD_EXTRAS)
set(EXTRAS_MAKEFILE "${CMAKE_CURRENT_SOURCE_DIR}/extras")
parse_makefile_am(${EXTRAS_MAKEFILE} "WEBP_EXTRAS_SRCS" "libwebpextras_la")
parse_makefile_am(${EXTRAS_MAKEFILE} "GET_DISTO_SRCS" "get_disto")
parse_makefile_am(${EXTRAS_MAKEFILE} "WEBP_QUALITY_SRCS" "webp_quality")
parse_makefile_am(${EXTRAS_MAKEFILE} "VWEBP_SDL_SRCS" "vwebp_sdl")
# libextras
add_library(extras STATIC ${WEBP_EXTRAS_SRCS})
target_include_directories(
extras PRIVATE ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}
${CMAKE_CURRENT_SOURCE_DIR}/src)
# get_disto
add_executable(get_disto ${GET_DISTO_SRCS})
target_link_libraries(get_disto imagedec)
target_include_directories(get_disto PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
${CMAKE_CURRENT_BINARY_DIR}/src)
# webp_quality
add_executable(webp_quality ${WEBP_QUALITY_SRCS})
target_link_libraries(webp_quality exampleutil imagedec extras)
target_include_directories(webp_quality PRIVATE ${CMAKE_CURRENT_SOURCE_DIR}
${CMAKE_CURRENT_BINARY_DIR})
# vwebp_sdl
find_package(SDL)
if(WEBP_BUILD_VWEBP AND SDL_FOUND)
add_executable(vwebp_sdl ${VWEBP_SDL_SRCS})
target_link_libraries(vwebp_sdl ${SDL_LIBRARY} imageioutil webp)
target_include_directories(
vwebp_sdl PRIVATE ${CMAKE_CURRENT_SOURCE_DIR} ${CMAKE_CURRENT_BINARY_DIR}
${CMAKE_CURRENT_BINARY_DIR}/src ${SDL_INCLUDE_DIR})
set(WEBP_HAVE_SDL 1)
target_compile_definitions(vwebp_sdl PUBLIC WEBP_HAVE_SDL)
endif()
endif()
if(WEBP_BUILD_WEBP_JS)
# The default stack size changed from 5MB to 64KB in 3.1.27. See
# https://crbug.com/webp/614.
if(EMSCRIPTEN_VERSION VERSION_GREATER_EQUAL "3.1.27")
# TOTAL_STACK size was renamed to STACK_SIZE in 3.1.27. The old name was
# kept for compatibility, but prefer the new one in case it is removed in
# the future.
set(emscripten_stack_size "-sSTACK_SIZE=5MB")
else()
set(emscripten_stack_size "-sTOTAL_STACK=5MB")
endif()
# wasm2js does not support SIMD.
if(NOT WEBP_ENABLE_SIMD)
# JavaScript version
add_executable(webp_js ${CMAKE_CURRENT_SOURCE_DIR}/extras/webp_to_sdl.c)
target_link_libraries(webp_js webpdecoder SDL)
target_include_directories(webp_js PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
set(WEBP_HAVE_SDL 1)
set_target_properties(
webp_js
PROPERTIES LINK_FLAGS "-sWASM=0 ${emscripten_stack_size} \
-sEXPORTED_FUNCTIONS=_WebPToSDL -sINVOKE_RUN=0 \
-sEXPORTED_RUNTIME_METHODS=cwrap")
set_target_properties(webp_js PROPERTIES OUTPUT_NAME webp)
target_compile_definitions(webp_js PUBLIC EMSCRIPTEN WEBP_HAVE_SDL)
endif()
# WASM version
add_executable(webp_wasm ${CMAKE_CURRENT_SOURCE_DIR}/extras/webp_to_sdl.c)
target_link_libraries(webp_wasm webpdecoder SDL)
target_include_directories(webp_wasm PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
set_target_properties(
webp_wasm
PROPERTIES LINK_FLAGS "-sWASM=1 ${emscripten_stack_size} \
-sEXPORTED_FUNCTIONS=_WebPToSDL -sINVOKE_RUN=0 \
-sEXPORTED_RUNTIME_METHODS=cwrap")
target_compile_definitions(webp_wasm PUBLIC EMSCRIPTEN WEBP_HAVE_SDL)
target_compile_definitions(webpdspdecode PUBLIC EMSCRIPTEN)
endif()
if(WEBP_BUILD_ANIM_UTILS)
# anim_diff
include_directories(${WEBP_DEP_IMG_INCLUDE_DIRS} ${WEBP_DEP_GIF_INCLUDE_DIRS})
parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "ANIM_DIFF_SRCS"
"anim_diff")
add_executable(anim_diff ${ANIM_DIFF_SRCS})
target_link_libraries(
anim_diff
exampleutil
imagedec
imageenc
imageioutil
webp
webpdemux
${WEBP_DEP_GIF_LIBRARIES})
target_include_directories(anim_diff PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src)
# anim_dump
include_directories(${WEBP_DEP_IMG_INCLUDE_DIRS} ${WEBP_DEP_GIF_INCLUDE_DIRS})
parse_makefile_am(${CMAKE_CURRENT_SOURCE_DIR}/examples "ANIM_DUMP_SRCS"
"anim_dump")
add_executable(anim_dump ${ANIM_DUMP_SRCS})
target_link_libraries(
anim_dump
exampleutil
imagedec
imageenc
imageioutil
webp
webpdemux
${WEBP_DEP_GIF_LIBRARIES})
target_include_directories(anim_dump PRIVATE ${CMAKE_CURRENT_BINARY_DIR}/src)
endif()
# Install the different headers and libraries.
install(
TARGETS ${INSTALLED_LIBRARIES}
EXPORT ${PROJECT_NAME}Targets
PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/webp
INCLUDES
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR})
set(ConfigPackageLocation ${CMAKE_INSTALL_DATADIR}/${PROJECT_NAME}/cmake/)
install(EXPORT ${PROJECT_NAME}Targets NAMESPACE ${PROJECT_NAME}::
DESTINATION ${ConfigPackageLocation})
# Create the CMake version file.
include(CMakePackageConfigHelpers)
write_basic_package_version_file(
"${CMAKE_CURRENT_BINARY_DIR}/WebPConfigVersion.cmake"
VERSION ${PACKAGE_VERSION} COMPATIBILITY AnyNewerVersion)
# Create the Config file.
include(CMakePackageConfigHelpers)
# Fix libwebpmux reference. The target name libwebpmux is used for compatibility
# purposes, but the library mentioned in WebPConfig.cmake should be the
# unprefixed version. Note string(...) can be replaced with list(TRANSFORM ...)
# if cmake_minimum_required is >= 3.12.
string(REGEX REPLACE "libwebpmux" "webpmux" INSTALLED_LIBRARIES
"${INSTALLED_LIBRARIES}")
if(MSVC)
# For compatibility with nmake, MSVC builds use a custom prefix (lib) that
# needs to be included in the library name.
string(REGEX REPLACE "[A-Za-z0-9_]+" "${CMAKE_STATIC_LIBRARY_PREFIX}\\0"
INSTALLED_LIBRARIES "${INSTALLED_LIBRARIES}")
endif()
configure_package_config_file(
${CMAKE_CURRENT_SOURCE_DIR}/cmake/WebPConfig.cmake.in
${CMAKE_CURRENT_BINARY_DIR}/WebPConfig.cmake
INSTALL_DESTINATION ${ConfigPackageLocation}
PATH_VARS CMAKE_INSTALL_INCLUDEDIR)
# Install the generated CMake files.
install(FILES "${CMAKE_CURRENT_BINARY_DIR}/WebPConfigVersion.cmake"
"${CMAKE_CURRENT_BINARY_DIR}/WebPConfig.cmake"
DESTINATION ${ConfigPackageLocation})
# Install the man pages.
set(MAN_PAGES
cwebp.1
dwebp.1
gif2webp.1
img2webp.1
vwebp.1
webpmux.1
webpinfo.1)
set(EXEC_BUILDS
"CWEBP"
"DWEBP"
"GIF2WEBP"
"IMG2WEBP"
"VWEBP"
"WEBPMUX"
"WEBPINFO")
list(LENGTH MAN_PAGES MAN_PAGES_LENGTH)
math(EXPR MAN_PAGES_RANGE "${MAN_PAGES_LENGTH} - 1")
foreach(I_MAN RANGE ${MAN_PAGES_RANGE})
list(GET EXEC_BUILDS ${I_MAN} EXEC_BUILD)
if(WEBP_BUILD_${EXEC_BUILD})
list(GET MAN_PAGES ${I_MAN} MAN_PAGE)
install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/man/${MAN_PAGE}
DESTINATION ${CMAKE_INSTALL_MANDIR}/man1 COMPONENT doc)
endif()
endforeach()

78
external/libwebp/libwebp/CONTRIBUTING.md vendored
View File

@ -1,78 +0,0 @@
# How to Contribute
We'd love to accept your patches and contributions to this project. There are
just a few small guidelines you need to follow.
## Contributor License Agreement
Contributions to this project must be accompanied by a Contributor License
Agreement. You (or your employer) retain the copyright to your contribution;
this simply gives us permission to use and redistribute your contributions as
part of the project. Head over to <https://cla.developers.google.com/> to see
your current agreements on file or to sign a new one.
You generally only need to submit a CLA once, so if you've already submitted one
(even if it was for a different project), you probably don't need to do it
again.
## Code reviews
All submissions, including submissions by project members, require review. We
use a [Gerrit](https://www.gerritcodereview.com) instance hosted at
https://chromium-review.googlesource.com for this purpose.
## Sending patches
The basic git workflow for modifying libwebp code and sending for review is:
1. Get the latest version of the repository locally:
```sh
git clone https://chromium.googlesource.com/webm/libwebp && cd libwebp
```
2. Copy the commit-msg script into ./git/hooks (this will add an ID to all of
your commits):
```sh
curl -Lo .git/hooks/commit-msg https://chromium-review.googlesource.com/tools/hooks/commit-msg && chmod u+x .git/hooks/commit-msg
```
3. Modify the local copy of libwebp. Make sure the code
[builds successfully](https://chromium.googlesource.com/webm/libwebp/+/HEAD/doc/building.md#cmake).
4. Choose a short and representative commit message:
```sh
git commit -a -m "Set commit message here"
```
5. Send the patch for review:
```sh
git push https://chromium-review.googlesource.com/webm/libwebp HEAD:refs/for/main
```
Go to https://chromium-review.googlesource.com to view your patch and
request a review from the maintainers.
See the
[WebM Project page](https://www.webmproject.org/code/contribute/submitting-patches/)
for additional details.
## Code Style
The C code style is based on the
[Google C++ Style Guide](https://google.github.io/styleguide/cppguide.html) and
`clang-format --style=Google`, though this project doesn't use the tool to
enforce the formatting.
CMake files are formatted with
[cmake-format](https://cmake-format.readthedocs.io/en/latest/). `cmake-format
-i` can be used to format individual files, it will use the settings from
`.cmake-format.py`.
## Community Guidelines
This project follows
[Google's Open Source Community Guidelines](https://opensource.google.com/conduct/).

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external/libwebp/libwebp/COPYING vendored
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@ -1,30 +0,0 @@
Copyright (c) 2010, Google Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
* Neither the name of Google nor the names of its contributors may
be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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ACLOCAL_AMFLAGS = -I m4
SUBDIRS = sharpyuv src imageio man
EXTRA_DIST = COPYING autogen.sh
if BUILD_EXTRAS
SUBDIRS += extras
endif
SUBDIRS += examples

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@ -1,528 +0,0 @@
#
# Stem for static libs and DLLs
#
LIBWEBPDECODER_BASENAME = libwebpdecoder
LIBWEBP_BASENAME = libwebp
LIBWEBPMUX_BASENAME = libwebpmux
LIBWEBPDEMUX_BASENAME = libwebpdemux
LIBSHARPYUV_BASENAME = libsharpyuv
!IFNDEF ARCH
!IF ! [ cl 2>&1 | find "x86" > NUL ]
ARCH = x86
!ELSE IF ! [ cl 2>&1 | find "x64" > NUL ]
ARCH = x64
!ELSE IF ! [ cl 2>&1 | find "ARM" > NUL ]
ARCH = ARM
!ELSE
!ERROR Unable to auto-detect toolchain architecture! \
If cl.exe is in your PATH rerun nmake with ARCH=<arch>.
!ENDIF
!ENDIF
!IF "$(ARCH)" == "x86"
PLATFORM_LDFLAGS = /SAFESEH
!ENDIF
#############################################################
## Nothing more to do below this line!
NOLOGO = /nologo
CCNODBG = cl.exe $(NOLOGO) /O2 /DNDEBUG
CCDEBUG = cl.exe $(NOLOGO) /Od /Zi /D_DEBUG /RTC1
CFLAGS = /I. /Isrc $(NOLOGO) /W3 /EHsc /c
CFLAGS = $(CFLAGS) /DWIN32 /D_CRT_SECURE_NO_WARNINGS /DWIN32_LEAN_AND_MEAN
LDFLAGS = /LARGEADDRESSAWARE /MANIFEST:EMBED /NXCOMPAT /DYNAMICBASE
LDFLAGS = $(LDFLAGS) $(PLATFORM_LDFLAGS)
LNKDLL = link.exe /DLL $(NOLOGO)
LNKEXE = link.exe $(NOLOGO)
LNKLIB = lib.exe $(NOLOGO)
RCNODBG = rc.exe $(NOLOGO) /l"0x0409" # 0x409 = U.S. English
RCDEBUG = $(RCNODBG) /D_DEBUG
!IF "$(ARCH)" == "ARM"
CFLAGS = $(CFLAGS) /DWINAPI_FAMILY=WINAPI_FAMILY_PHONE_APP /DWEBP_USE_THREAD
!ELSE
CFLAGS = $(CFLAGS) /DHAVE_WINCODEC_H /DWEBP_USE_THREAD
!ENDIF
CFGSET = FALSE
!IF "$(OBJDIR)" == ""
OUTDIR = ..\obj\
!ELSE
OUTDIR = $(OBJDIR)
!ENDIF
##############################################################
# Runtime library configuration
!IF "$(RTLIBCFG)" == "static"
RTLIB = /MT
RTLIBD = /MTd
!ELSE IF "$(RTLIBCFG)" == "legacy"
RTLIBCFG = static
RTLIB = /MT
RTLIBD = /MTd
CFLAGS = $(CFLAGS) /GS- /arch:IA32
!ELSE
RTLIB = /MD
RTLIBD = /MDd
!ENDIF
DIRBASE = $(OUTDIR)\$(CFG)\$(ARCH)
DIROBJ = $(DIRBASE)\obj
DIRLIB = $(DIRBASE)\lib
DIRINC = $(DIRBASE)\include
DIRBIN = $(DIRBASE)\bin
LIBWEBP_PDBNAME = $(DIROBJ)\$(LIBWEBP_BASENAME).pdb
OUTPUT_DIRS = $(DIRBIN) $(DIRINC) $(DIRLIB) \
$(DIROBJ)\dec \
$(DIROBJ)\demux \
$(DIROBJ)\dsp \
$(DIROBJ)\enc \
$(DIROBJ)\examples \
$(DIROBJ)\extras \
$(DIROBJ)\imageio \
$(DIROBJ)\mux \
$(DIROBJ)\sharpyuv \
$(DIROBJ)\utils \
# Target configuration
!IF "$(CFG)" == "release-static"
CC = $(CCNODBG)
STATICLIBBUILD = TRUE
!ELSE IF "$(CFG)" == "debug-static"
CC = $(CCDEBUG)
RTLIB = $(RTLIBD)
STATICLIBBUILD = TRUE
LIBWEBPDECODER_BASENAME = $(LIBWEBPDECODER_BASENAME)_debug
LIBWEBP_BASENAME = $(LIBWEBP_BASENAME)_debug
LIBWEBPMUX_BASENAME = $(LIBWEBPMUX_BASENAME)_debug
LIBWEBPDEMUX_BASENAME = $(LIBWEBPDEMUX_BASENAME)_debug
LIBSHARPYUV_BASENAME = $(LIBSHARPYUV_BASENAME)_debug
!ELSE IF "$(CFG)" == "release-dynamic"
CC = $(CCNODBG)
RC = $(RCNODBG)
DLLBUILD = TRUE
!ELSE IF "$(CFG)" == "debug-dynamic"
CC = $(CCDEBUG)
RC = $(RCDEBUG)
RTLIB = $(RTLIBD)
DLLBUILD = TRUE
LIBWEBPDECODER_BASENAME = $(LIBWEBPDECODER_BASENAME)_debug
LIBWEBP_BASENAME = $(LIBWEBP_BASENAME)_debug
LIBWEBPMUX_BASENAME = $(LIBWEBPMUX_BASENAME)_debug
LIBWEBPDEMUX_BASENAME = $(LIBWEBPDEMUX_BASENAME)_debug
LIBSHARPYUV_BASENAME = $(LIBSHARPYUV_BASENAME)_debug
!ENDIF
!IF "$(STATICLIBBUILD)" == "TRUE"
CC = $(CC) $(RTLIB)
CFGSET = TRUE
LIBWEBPDECODER = $(DIRLIB)\$(LIBWEBPDECODER_BASENAME).lib
LIBWEBP = $(DIRLIB)\$(LIBWEBP_BASENAME).lib
LIBWEBPMUX = $(DIRLIB)\$(LIBWEBPMUX_BASENAME).lib
LIBWEBPDEMUX = $(DIRLIB)\$(LIBWEBPDEMUX_BASENAME).lib
LIBSHARPYUV = $(DIRLIB)\$(LIBSHARPYUV_BASENAME).lib
!ELSE IF "$(DLLBUILD)" == "TRUE"
CC = $(CC) /I$(DIROBJ) $(RTLIB) /DWEBP_DLL
LIBWEBPDECODER = $(DIRLIB)\$(LIBWEBPDECODER_BASENAME)_dll.lib
LIBWEBP = $(DIRLIB)\$(LIBWEBP_BASENAME)_dll.lib
LIBWEBPMUX = $(DIRLIB)\$(LIBWEBPMUX_BASENAME)_dll.lib
LIBWEBPDEMUX = $(DIRLIB)\$(LIBWEBPDEMUX_BASENAME)_dll.lib
LIBSHARPYUV = $(DIRLIB)\$(LIBSHARPYUV_BASENAME)_dll.lib
LIBWEBP_PDBNAME = $(DIROBJ)\$(LIBWEBP_BASENAME)_dll.pdb
CFGSET = TRUE
!ENDIF
!IF "$(UNICODE)" == "1"
CFLAGS = $(CFLAGS) /D_UNICODE /DUNICODE
!ENDIF
#######################
# Usage
#
!IF "$(CFGSET)" == "FALSE"
!MESSAGE Usage: nmake /f Makefile.vc [CFG=<config>]
!MESSAGE . [OBJDIR=<path>] [RTLIBCFG=<rtlib>] [UNICODE=1] [<target>]
!MESSAGE
!MESSAGE where <config> is one of:
!MESSAGE - release-static - release static library
!MESSAGE - debug-static - debug static library
!MESSAGE - release-dynamic - release dynamic link library (DLL)
!MESSAGE - debug-dynamic - debug dynamic link library (DLL)
!MESSAGE
!MESSAGE <target> may be:
!MESSAGE - clean - perform a clean for CFG
!MESSAGE - experimental - build CFG with experimental
!MESSAGE . features enabled.
!MESSAGE - (empty) - build libwebp-based targets for CFG
!MESSAGE - all - build (de)mux-based targets for CFG
!MESSAGE - gif2webp - requires libgif & >= VS2013
!MESSAGE - anim_diff - requires libgif & >= VS2013
!MESSAGE - anim_dump
!MESSAGE
!MESSAGE RTLIBCFG controls the runtime library linkage - 'static' or 'dynamic'.
!MESSAGE 'legacy' will produce a Windows 2000 compatible library.
!MESSAGE OBJDIR is the path where you like to build (obj, bins, etc.),
!MESSAGE defaults to ..\obj
!IF "$(CFG)" != ""
!MESSAGE
!ERROR please choose a valid configuration instead of "$(CFG)"
!ENDIF
!ENDIF
#######################
# Rules
#
!IF "$(CFGSET)" == "TRUE"
# A config was provided, so the library can be built.
#
SHARPYUV_OBJS = \
$(DIROBJ)\sharpyuv\sharpyuv.obj \
$(DIROBJ)\sharpyuv\sharpyuv_cpu.obj \
$(DIROBJ)\sharpyuv\sharpyuv_csp.obj \
$(DIROBJ)\sharpyuv\sharpyuv_dsp.obj \
$(DIROBJ)\sharpyuv\sharpyuv_gamma.obj \
$(DIROBJ)\sharpyuv\sharpyuv_neon.obj \
$(DIROBJ)\sharpyuv\sharpyuv_sse2.obj \
DEC_OBJS = \
$(DIROBJ)\dec\alpha_dec.obj \
$(DIROBJ)\dec\buffer_dec.obj \
$(DIROBJ)\dec\frame_dec.obj \
$(DIROBJ)\dec\idec_dec.obj \
$(DIROBJ)\dec\io_dec.obj \
$(DIROBJ)\dec\quant_dec.obj \
$(DIROBJ)\dec\tree_dec.obj \
$(DIROBJ)\dec\vp8_dec.obj \
$(DIROBJ)\dec\vp8l_dec.obj \
$(DIROBJ)\dec\webp_dec.obj \
DEMUX_OBJS = \
$(DIROBJ)\demux\anim_decode.obj \
$(DIROBJ)\demux\demux.obj \
DSP_DEC_OBJS = \
$(DIROBJ)\dsp\alpha_processing.obj \
$(DIROBJ)\dsp\alpha_processing_mips_dsp_r2.obj \
$(DIROBJ)\dsp\alpha_processing_neon.obj \
$(DIROBJ)\dsp\alpha_processing_sse2.obj \
$(DIROBJ)\dsp\alpha_processing_sse41.obj \
$(DIROBJ)\dsp\cpu.obj \
$(DIROBJ)\dsp\dec.obj \
$(DIROBJ)\dsp\dec_clip_tables.obj \
$(DIROBJ)\dsp\dec_mips32.obj \
$(DIROBJ)\dsp\dec_mips_dsp_r2.obj \
$(DIROBJ)\dsp\dec_msa.obj \
$(DIROBJ)\dsp\dec_neon.obj \
$(DIROBJ)\dsp\dec_sse2.obj \
$(DIROBJ)\dsp\dec_sse41.obj \
$(DIROBJ)\dsp\filters.obj \
$(DIROBJ)\dsp\filters_mips_dsp_r2.obj \
$(DIROBJ)\dsp\filters_msa.obj \
$(DIROBJ)\dsp\filters_neon.obj \
$(DIROBJ)\dsp\filters_sse2.obj \
$(DIROBJ)\dsp\lossless.obj \
$(DIROBJ)\dsp\lossless_mips_dsp_r2.obj \
$(DIROBJ)\dsp\lossless_msa.obj \
$(DIROBJ)\dsp\lossless_neon.obj \
$(DIROBJ)\dsp\lossless_sse2.obj \
$(DIROBJ)\dsp\lossless_sse41.obj \
$(DIROBJ)\dsp\rescaler.obj \
$(DIROBJ)\dsp\rescaler_mips32.obj \
$(DIROBJ)\dsp\rescaler_mips_dsp_r2.obj \
$(DIROBJ)\dsp\rescaler_msa.obj \
$(DIROBJ)\dsp\rescaler_neon.obj \
$(DIROBJ)\dsp\rescaler_sse2.obj \
$(DIROBJ)\dsp\upsampling.obj \
$(DIROBJ)\dsp\upsampling_mips_dsp_r2.obj \
$(DIROBJ)\dsp\upsampling_msa.obj \
$(DIROBJ)\dsp\upsampling_neon.obj \
$(DIROBJ)\dsp\upsampling_sse2.obj \
$(DIROBJ)\dsp\upsampling_sse41.obj \
$(DIROBJ)\dsp\yuv.obj \
$(DIROBJ)\dsp\yuv_mips32.obj \
$(DIROBJ)\dsp\yuv_mips_dsp_r2.obj \
$(DIROBJ)\dsp\yuv_neon.obj \
$(DIROBJ)\dsp\yuv_sse2.obj \
$(DIROBJ)\dsp\yuv_sse41.obj \
DSP_ENC_OBJS = \
$(DIROBJ)\dsp\cost.obj \
$(DIROBJ)\dsp\cost_mips32.obj \
$(DIROBJ)\dsp\cost_mips_dsp_r2.obj \
$(DIROBJ)\dsp\cost_neon.obj \
$(DIROBJ)\dsp\cost_sse2.obj \
$(DIROBJ)\dsp\enc.obj \
$(DIROBJ)\dsp\enc_mips32.obj \
$(DIROBJ)\dsp\enc_mips_dsp_r2.obj \
$(DIROBJ)\dsp\enc_msa.obj \
$(DIROBJ)\dsp\enc_neon.obj \
$(DIROBJ)\dsp\enc_sse2.obj \
$(DIROBJ)\dsp\enc_sse41.obj \
$(DIROBJ)\dsp\lossless_enc.obj \
$(DIROBJ)\dsp\lossless_enc_mips32.obj \
$(DIROBJ)\dsp\lossless_enc_mips_dsp_r2.obj \
$(DIROBJ)\dsp\lossless_enc_msa.obj \
$(DIROBJ)\dsp\lossless_enc_neon.obj \
$(DIROBJ)\dsp\lossless_enc_sse2.obj \
$(DIROBJ)\dsp\lossless_enc_sse41.obj \
$(DIROBJ)\dsp\ssim.obj \
$(DIROBJ)\dsp\ssim_sse2.obj \
EX_ANIM_UTIL_OBJS = \
$(DIROBJ)\examples\anim_util.obj \
IMAGEIO_DEC_OBJS = \
$(DIROBJ)\imageio\image_dec.obj \
$(DIROBJ)\imageio\jpegdec.obj \
$(DIROBJ)\imageio\metadata.obj \
$(DIROBJ)\imageio\pngdec.obj \
$(DIROBJ)\imageio\pnmdec.obj \
$(DIROBJ)\imageio\tiffdec.obj \
$(DIROBJ)\imageio\webpdec.obj \
$(DIROBJ)\imageio\wicdec.obj \
IMAGEIO_ENC_OBJS = \
$(DIROBJ)\imageio\image_enc.obj \
EX_GIF_DEC_OBJS = \
$(DIROBJ)\examples\gifdec.obj \
EX_UTIL_OBJS = \
$(DIROBJ)\examples\example_util.obj \
ENC_OBJS = \
$(DIROBJ)\enc\alpha_enc.obj \
$(DIROBJ)\enc\analysis_enc.obj \
$(DIROBJ)\enc\backward_references_cost_enc.obj \
$(DIROBJ)\enc\backward_references_enc.obj \
$(DIROBJ)\enc\config_enc.obj \
$(DIROBJ)\enc\cost_enc.obj \
$(DIROBJ)\enc\filter_enc.obj \
$(DIROBJ)\enc\frame_enc.obj \
$(DIROBJ)\enc\histogram_enc.obj \
$(DIROBJ)\enc\iterator_enc.obj \
$(DIROBJ)\enc\near_lossless_enc.obj \
$(DIROBJ)\enc\picture_enc.obj \
$(DIROBJ)\enc\picture_csp_enc.obj \
$(DIROBJ)\enc\picture_psnr_enc.obj \
$(DIROBJ)\enc\picture_rescale_enc.obj \
$(DIROBJ)\enc\picture_tools_enc.obj \
$(DIROBJ)\enc\predictor_enc.obj \
$(DIROBJ)\enc\quant_enc.obj \
$(DIROBJ)\enc\syntax_enc.obj \
$(DIROBJ)\enc\token_enc.obj \
$(DIROBJ)\enc\tree_enc.obj \
$(DIROBJ)\enc\vp8l_enc.obj \
$(DIROBJ)\enc\webp_enc.obj \
EXTRAS_OBJS = \
$(DIROBJ)\extras\extras.obj \
$(DIROBJ)\extras\quality_estimate.obj \
IMAGEIO_UTIL_OBJS = \
$(DIROBJ)\imageio\imageio_util.obj \
MUX_OBJS = \
$(DIROBJ)\mux\anim_encode.obj \
$(DIROBJ)\mux\muxedit.obj \
$(DIROBJ)\mux\muxinternal.obj \
$(DIROBJ)\mux\muxread.obj \
UTILS_DEC_OBJS = \
$(DIROBJ)\utils\bit_reader_utils.obj \
$(DIROBJ)\utils\color_cache_utils.obj \
$(DIROBJ)\utils\filters_utils.obj \
$(DIROBJ)\utils\huffman_utils.obj \
$(DIROBJ)\utils\palette.obj \
$(DIROBJ)\utils\quant_levels_dec_utils.obj \
$(DIROBJ)\utils\rescaler_utils.obj \
$(DIROBJ)\utils\random_utils.obj \
$(DIROBJ)\utils\thread_utils.obj \
$(DIROBJ)\utils\utils.obj \
UTILS_ENC_OBJS = \
$(DIROBJ)\utils\bit_writer_utils.obj \
$(DIROBJ)\utils\huffman_encode_utils.obj \
$(DIROBJ)\utils\quant_levels_utils.obj \
LIBWEBPDECODER_OBJS = $(DEC_OBJS) $(DSP_DEC_OBJS) $(UTILS_DEC_OBJS)
LIBWEBP_OBJS = $(LIBWEBPDECODER_OBJS) $(ENC_OBJS) \
$(DSP_ENC_OBJS) $(UTILS_ENC_OBJS) $(DLL_OBJS)
LIBWEBPMUX_OBJS = $(MUX_OBJS) $(LIBWEBPMUX_OBJS)
LIBWEBPDEMUX_OBJS = $(DEMUX_OBJS) $(LIBWEBPDEMUX_OBJS)
LIBSHARPYUV_OBJS = $(SHARPYUV_OBJS)
OUT_LIBS = $(LIBWEBPDECODER) $(LIBWEBP) $(LIBSHARPYUV)
!IF "$(ARCH)" == "ARM"
ex: $(OUT_LIBS)
all: ex
!ELSE
OUT_EXAMPLES = $(DIRBIN)\cwebp.exe $(DIRBIN)\dwebp.exe
EXTRA_EXAMPLES = $(DIRBIN)\vwebp.exe $(DIRBIN)\webpmux.exe \
$(DIRBIN)\img2webp.exe $(DIRBIN)\get_disto.exe \
$(DIRBIN)\webp_quality.exe $(DIRBIN)\vwebp_sdl.exe \
$(DIRBIN)\webpinfo.exe
ex: $(OUT_LIBS) $(OUT_EXAMPLES)
all: ex $(EXTRA_EXAMPLES)
# NB: gif2webp.exe and anim_diff.exe are excluded from 'all' as libgif requires
# C99 support which is only available from VS2013 onward.
gif2webp: $(DIRBIN)\gif2webp.exe
anim_diff: $(DIRBIN)\anim_diff.exe
anim_dump: $(DIRBIN)\anim_dump.exe
$(DIRBIN)\anim_diff.exe: $(DIROBJ)\examples\anim_diff.obj $(EX_ANIM_UTIL_OBJS)
$(DIRBIN)\anim_diff.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS)
$(DIRBIN)\anim_diff.exe: $(EX_GIF_DEC_OBJS) $(LIBWEBPDEMUX) $(LIBWEBP)
$(DIRBIN)\anim_dump.exe: $(DIROBJ)\examples\anim_dump.obj $(EX_ANIM_UTIL_OBJS)
$(DIRBIN)\anim_dump.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS)
$(DIRBIN)\anim_dump.exe: $(EX_GIF_DEC_OBJS) $(LIBWEBPDEMUX) $(LIBWEBP)
$(DIRBIN)\anim_dump.exe: $(IMAGEIO_ENC_OBJS)
$(DIRBIN)\cwebp.exe: $(DIROBJ)\examples\cwebp.obj $(IMAGEIO_DEC_OBJS)
$(DIRBIN)\cwebp.exe: $(IMAGEIO_UTIL_OBJS)
$(DIRBIN)\cwebp.exe: $(LIBWEBPDEMUX) $(LIBSHARPYUV)
$(DIRBIN)\dwebp.exe: $(DIROBJ)\examples\dwebp.obj $(IMAGEIO_DEC_OBJS)
$(DIRBIN)\dwebp.exe: $(IMAGEIO_ENC_OBJS)
$(DIRBIN)\dwebp.exe: $(IMAGEIO_UTIL_OBJS)
$(DIRBIN)\dwebp.exe: $(LIBWEBPDEMUX)
$(DIRBIN)\gif2webp.exe: $(DIROBJ)\examples\gif2webp.obj $(EX_GIF_DEC_OBJS)
$(DIRBIN)\gif2webp.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS) $(LIBWEBPMUX)
$(DIRBIN)\gif2webp.exe: $(LIBWEBP)
$(DIRBIN)\vwebp.exe: $(DIROBJ)\examples\vwebp.obj $(EX_UTIL_OBJS)
$(DIRBIN)\vwebp.exe: $(IMAGEIO_UTIL_OBJS) $(LIBWEBPDEMUX) $(LIBWEBP)
$(DIRBIN)\vwebp_sdl.exe: $(DIROBJ)\extras\vwebp_sdl.obj
$(DIRBIN)\vwebp_sdl.exe: $(DIROBJ)\extras\webp_to_sdl.obj
$(DIRBIN)\vwebp_sdl.exe: $(IMAGEIO_UTIL_OBJS) $(LIBWEBP)
$(DIRBIN)\webpmux.exe: $(DIROBJ)\examples\webpmux.obj $(LIBWEBPMUX)
$(DIRBIN)\webpmux.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS) $(LIBWEBP)
$(DIRBIN)\img2webp.exe: $(DIROBJ)\examples\img2webp.obj $(LIBWEBPMUX)
$(DIRBIN)\img2webp.exe: $(IMAGEIO_DEC_OBJS)
$(DIRBIN)\img2webp.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS)
$(DIRBIN)\img2webp.exe: $(LIBWEBPDEMUX) $(LIBWEBP) $(LIBSHARPYUV)
$(DIRBIN)\get_disto.exe: $(DIROBJ)\extras\get_disto.obj
$(DIRBIN)\get_disto.exe: $(IMAGEIO_DEC_OBJS) $(IMAGEIO_UTIL_OBJS)
$(DIRBIN)\get_disto.exe: $(LIBWEBPDEMUX) $(LIBWEBP)
$(DIRBIN)\webp_quality.exe: $(DIROBJ)\extras\webp_quality.obj
$(DIRBIN)\webp_quality.exe: $(IMAGEIO_UTIL_OBJS)
$(DIRBIN)\webp_quality.exe: $(EXTRAS_OBJS)
# EXTRA_OBJS requires private symbols from dsp. Explicitly add those when
# building libwebp as a dll.
!IF "$(DLLBUILD)" == "TRUE"
$(DIRBIN)\webp_quality.exe: $(DSP_DEC_OBJS)
!ENDIF
$(DIRBIN)\webp_quality.exe: $(LIBWEBP)
$(DIRBIN)\webpinfo.exe: $(DIROBJ)\examples\webpinfo.obj
$(DIRBIN)\webpinfo.exe: $(IMAGEIO_DEC_OBJS)
$(DIRBIN)\webpinfo.exe: $(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS)
$(DIRBIN)\webpinfo.exe: $(LIBWEBPDEMUX) $(LIBWEBP)
$(OUT_EXAMPLES): $(EX_UTIL_OBJS) $(LIBWEBP)
$(EX_UTIL_OBJS) $(IMAGEIO_UTIL_OBJS): $(OUTPUT_DIRS)
$(IMAGEIO_DEC_OBJS) $(IMAGEIO_ENC_OBJS) $(EXTRAS_OBJS): $(OUTPUT_DIRS)
!ENDIF # ARCH == ARM
$(LIBSHARPYUV): $(LIBSHARPYUV_OBJS)
$(LIBWEBPDECODER): $(LIBWEBPDECODER_OBJS)
$(LIBWEBP): $(LIBWEBP_OBJS) $(LIBSHARPYUV)
$(LIBWEBPMUX): $(LIBWEBPMUX_OBJS)
$(LIBWEBPDEMUX): $(LIBWEBPDEMUX_OBJS)
$(LIBWEBP_OBJS) $(LIBWEBPMUX_OBJS) $(LIBWEBPDEMUX_OBJS) $(LIBSHARPYUV_OBJS): \
$(OUTPUT_DIRS)
!IF "$(DLLBUILD)" == "TRUE"
{$(DIROBJ)}.c{$(DIROBJ)}.obj:
$(CC) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$@ $<
{src}.rc{$(DIROBJ)}.res:
$(RC) /fo$@ $<
{src\demux}.rc{$(DIROBJ)\demux}.res:
$(RC) /fo$@ $<
{src\mux}.rc{$(DIROBJ)\mux}.res:
$(RC) /fo$@ $<
{sharpyuv}.rc{$(DIROBJ)\sharpyuv}.res:
$(RC) /fo$@ $<
$(LIBSHARPYUV): $(DIROBJ)\sharpyuv\$(LIBSHARPYUV_BASENAME:_debug=).res
$(LIBWEBP): $(LIBSHARPYUV) $(DIROBJ)\$(LIBWEBP_BASENAME:_debug=).res
$(LIBWEBPDECODER): $(DIROBJ)\$(LIBWEBPDECODER_BASENAME:_debug=).res
$(LIBWEBPMUX): $(LIBWEBP) $(DIROBJ)\mux\$(LIBWEBPMUX_BASENAME:_debug=).res
$(LIBWEBPDEMUX): $(LIBWEBP) $(DIROBJ)\demux\$(LIBWEBPDEMUX_BASENAME:_debug=).res
$(LIBWEBPDECODER) $(LIBWEBP) $(LIBWEBPMUX) $(LIBWEBPDEMUX) $(LIBSHARPYUV):
$(LNKDLL) /out:$(DIRBIN)\$(@B:_dll=.dll) /implib:$@ $(LFLAGS) $**
-xcopy $(DIROBJ)\*.pdb $(DIRLIB) /y
!ELSE
$(LIBWEBPDECODER) $(LIBWEBP) $(LIBWEBPMUX) $(LIBWEBPDEMUX) $(LIBSHARPYUV):
$(LNKLIB) /out:$@ $**
-xcopy $(DIROBJ)\*.pdb $(DIRLIB) /y
!ENDIF
$(OUTPUT_DIRS):
@if not exist "$(@)" mkdir "$(@)"
.SUFFIXES: .c .obj .res .exe
# File-specific flag builds. Note batch rules take precedence over wildcards,
# so for now name each file individually.
$(DIROBJ)\examples\anim_diff.obj: examples\anim_diff.c
$(CC) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
/Fo$(DIROBJ)\examples\ examples\$(@B).c
$(DIROBJ)\examples\anim_dump.obj: examples\anim_dump.c
$(CC) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
/Fo$(DIROBJ)\examples\ examples\$(@B).c
$(DIROBJ)\examples\anim_util.obj: examples\anim_util.c
$(CC) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
/Fo$(DIROBJ)\examples\ examples\$(@B).c
$(DIROBJ)\examples\gif2webp.obj: examples\gif2webp.c
$(CC) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
/Fo$(DIROBJ)\examples\ examples\$(@B).c
$(DIROBJ)\examples\gifdec.obj: examples\gifdec.c
$(CC) $(CFLAGS) /DWEBP_HAVE_GIF /Fd$(LIBWEBP_PDBNAME) \
/Fo$(DIROBJ)\examples\ examples\$(@B).c
# Batch rules
{examples}.c{$(DIROBJ)\examples}.obj::
$(CC) $(CFLAGS) /Fd$(DIROBJ)\examples\ /Fo$(DIROBJ)\examples\ $<
{extras}.c{$(DIROBJ)\extras}.obj::
$(CC) $(CFLAGS) /Fd$(DIROBJ)\extras\ /Fo$(DIROBJ)\extras\ $<
{imageio}.c{$(DIROBJ)\imageio}.obj::
$(CC) $(CFLAGS) /Fd$(DIROBJ)\imageio\ /Fo$(DIROBJ)\imageio\ $<
{sharpyuv}.c{$(DIROBJ)\sharpyuv}.obj::
$(CC) $(CFLAGS) /Fd$(DIROBJ)\sharpyuv\ /Fo$(DIROBJ)\sharpyuv\ $<
{src\dec}.c{$(DIROBJ)\dec}.obj::
$(CC) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\dec\ $<
{src\demux}.c{$(DIROBJ)\demux}.obj::
$(CC) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\demux\ $<
{src\dsp}.c{$(DIROBJ)\dsp}.obj::
$(CC) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\dsp\ $<
{src\enc}.c{$(DIROBJ)\enc}.obj::
$(CC) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\enc\ $<
{src\mux}.c{$(DIROBJ)\mux}.obj::
$(CC) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\mux\ $<
{src\utils}.c{$(DIROBJ)\utils}.obj::
$(CC) $(CFLAGS) /Fd$(LIBWEBP_PDBNAME) /Fo$(DIROBJ)\utils\ $<
LNKLIBS = ole32.lib windowscodecs.lib shlwapi.lib
!IF "$(UNICODE)" == "1"
LNKLIBS = $(LNKLIBS) Shell32.lib
!ENDIF
{$(DIROBJ)\examples}.obj{$(DIRBIN)}.exe:
$(LNKEXE) $(LDFLAGS) /OUT:$@ $** $(LNKLIBS)
{$(DIROBJ)\extras}.obj{$(DIRBIN)}.exe:
$(LNKEXE) $(LDFLAGS) /OUT:$@ $** $(LNKLIBS)
clean::
@-erase /s $(DIROBJ)\*.dll 2> NUL
@-erase /s $(DIROBJ)\*.exp 2> NUL
@-erase /s $(DIROBJ)\*.idb 2> NUL
@-erase /s $(DIROBJ)\*.lib 2> NUL
@-erase /s $(DIROBJ)\*.obj 2> NUL
@-erase /s $(DIROBJ)\*.pch 2> NUL
@-erase /s $(DIROBJ)\*.pdb 2> NUL
@-erase /s $(DIROBJ)\*.res 2> NUL
!ENDIF # End of case where a config was provided.

311
external/libwebp/libwebp/NEWS vendored
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@ -1,311 +0,0 @@
- 6/23/2023: version 1.3.1
This is a binary compatible release.
* security fixes for lossless encoder (#603, chromium: #1420107, #1455619,
CVE-2023-1999)
* improve error reporting through WebPPicture error codes
* fix upsampling for RGB565 and RGBA4444 in NEON builds
* img2webp: add -sharp_yuv & -near_lossless
* Windows builds:
- fix compatibility with clang-cl (#607)
- improve Arm64 performance with cl.exe
- add Arm64EC support
* fix webp_js with emcc >= 3.1.27 (stack size change, #614)
* CMake fixes (#592, #610, #612)
* further updates to the container and lossless bitstream docs (#581, #611)
- 12/16/2022: version 1.3.0
This is a binary compatible release.
* add libsharpyuv, which exposes -sharp_yuv/config.use_sharp_yuv
functionality to other libraries; libwebp now depends on this library
* major updates to the container and lossless bitstream docs (#448, #546,
#551)
* miscellaneous warning, bug & build fixes (#576, #583, #584)
- 8/4/2022: version 1.2.4
This is a binary compatible release.
* restore CMake libwebpmux target name for compatibility with 1.2.2 (#575)
* fix lossless crunch mode encoding with WEBP_REDUCE_SIZE
(chromium: #1345547, #1345595, #1345772, #1345804)
- 6/30/2022: version 1.2.3
This is a binary compatible release.
* security fix for lossless encoder (#565, chromium:1313709)
* improved progress granularity in WebPReportProgress() when using lossless
* improved precision in Sharp YUV (-sharp_yuv) conversion
* many corrections to webp-lossless-bitstream-spec.txt (#551)
* crash/leak fixes on error/OOM and other bug fixes (#558, #563, #569, #573)
- 1/11/2022: version 1.2.2
This is a binary compatible release.
* webpmux: add "-set bgcolor A,R,G,B"
* add ARM64 NEON support for MSVC builds (#539)
* fix duplicate include error in Xcode when using multiple XCFrameworks in a
project (#542)
* doc updates and bug fixes (#538, #544, #548, #550)
- 7/20/2021: version 1.2.1
This is a binary compatible release.
* minor lossless encoder improvements and x86 color conversion speed up
* add ARM64 simulator support to xcframeworkbuild.sh (#510)
* further security related hardening in libwebp & examples
(issues: #497, #508, #518)
(chromium: #1196480, #1196773, #1196775, #1196777, #1196778, #1196850)
(oss-fuzz: #28658, #28978)
* toolchain updates and bug fixes (#498, #501, #502, #504, #505, #506, #509,
#533)
* use more inclusive language within the source (#507)
- 12/23/2020: version 1.2.0
* API changes:
- libwebp:
encode.h: add a qmin / qmax range for quality factor (cwebp adds -qrange)
* lossless encoder improvements
* SIMD support for Wasm builds
* add xcframeworkbuild.sh, supports Mac Catalyst builds
* import fuzzers from oss-fuzz & chromium (#409)
* webpmux: add an '-set loop <value>' option (#494)
* toolchain updates and bug fixes (#449, #463, #470, #475, #477, #478, #479,
#488, #491)
- 12/18/2019: version 1.1.0
* API changes:
- libwebp:
WebPMalloc (issue #442)
- extras:
WebPUnmultiplyARGB
* alpha decode fix (issue #439)
* toolchain updates and bug fixes
(chromium: #1026858, #1027136, #1027409, #1028620, #1028716, #995200)
(oss-fuzz: #19430, #19447)
- 7/4/2019: version 1.0.3
This is a binary compatible release.
* resize fixes for Nx1 sizes and the addition of non-opaque alpha values for
odd sizes (issues #418, #434)
* lossless encode/decode performance improvements
* lossy compression performance improvement at low quality levels with flat
content (issue #432)
* python swig files updated to support python 3
Tool updates:
vwebp will now preserve the aspect ratio of images that exceed monitor
resolution by scaling the image to fit (issue #433)
- 1/14/2019: version 1.0.2
This is a binary compatible release.
* (Windows) unicode file support in the tools (linux and mac already had
support, issue #398)
* lossless encoder speedups
* lossy encoder speedup on ARM
* lossless multi-threaded security fix (chromium:917029)
- 11/2/2018: version 1.0.1
This is a binary compatible release.
* lossless encoder speedups
* big-endian fix for alpha decoding (issue #393)
* gif2webp fix for loop count=65535 transcode (issue #382)
* further security related hardening in libwebp & libwebpmux
(issues #383, #385, #386, #387, #388, #391)
(oss-fuzz #9099, #9100, #9105, #9106, #9111, #9112, #9119, #9123, #9170,
#9178, #9179, #9183, #9186, #9191, #9364, #9417, #9496, #10349,
#10423, #10634, #10700, #10838, #10922, #11021, #11088, #11152)
* miscellaneous bug & build fixes (issues #381, #394, #396, #397, #400)
- 4/2/2018: version 1.0.0
This is a binary compatible release.
* lossy encoder improvements to avoid chroma shifts in various circumstances
(issues #308, #340)
* big-endian fixes for decode, RGBA import and WebPPictureDistortion
Tool updates:
gifwebp, anim_diff - default duration behavior (<= 10ms) changed to match
web browsers, transcoding tools (issue #379)
img2webp, webpmux - allow options to be passed in via a file (issue #355)
- 11/24/2017: version 0.6.1
This is a binary compatible release.
* lossless performance and compression improvements + a new 'cruncher' mode
(-m 6 -q 100)
* ARM performance improvements with clang (15-20% w/ndk r15c, issue #339)
* webp-js: emscripten/webassembly based javascript decoder
* miscellaneous bug & build fixes (issue #329, #332, #343, #353, #360, #361,
#363)
Tool updates / additions:
added webpinfo - prints file format information (issue #330)
gif2webp - loop behavior modified to match Chrome M63+ (crbug.com/649264);
'-loop_compatibility' can be used for the old behavior
- 1/26/2017: version 0.6.0
* lossless performance and compression improvements
* miscellaneous performance improvements (SSE2, NEON, MSA)
* webpmux gained a -duration option allowing for frame timing modification
* new img2webp utility allowing a sequence of images to be converted to
animated webp
* API changes:
- libwebp:
WebPPictureSharpARGBToYUVA
WebPPlaneDistortion
- libwebpmux / gif2webp:
WebPAnimEncoderOptions: kmax <= 0 now disables keyframes, kmax == 1
forces all keyframes. See mux.h and the gif2webp
manpage for details.
- 12/13/2016: version 0.5.2
This is a binary compatible release.
This release covers CVE-2016-8888 and CVE-2016-9085.
* further security related hardening in the tools; fixes to
gif2webp/AnimEncoder (issues #310, #314, #316, #322), cwebp/libwebp (issue
#312)
* full libwebp (encoder & decoder) iOS framework; libwebpdecoder
WebP.framework renamed to WebPDecoder.framework (issue #307)
* CMake support for Android Studio (2.2)
* miscellaneous build related fixes (issue #306, #313)
* miscellaneous documentation improvements (issue #225)
* minor lossy encoder fixes and improvements
- 6/14/2016: version 0.5.1
This is a binary compatible release.
* miscellaneous bug fixes (issues #280, #289)
* reverted alpha plane encoding with color cache for compatibility with
libwebp 0.4.0->0.4.3 (issues #291, #298)
* lossless encoding performance improvements
* memory reduction in both lossless encoding and decoding
* force mux output to be in the extended format (VP8X) when undefined chunks
are present (issue #294)
* gradle, cmake build support
* workaround for compiler bug causing 64-bit decode failures on android
devices using clang-3.8 in the r11c NDK
* various WebPAnimEncoder improvements
- 12/17/2015: version 0.5.0
* miscellaneous bug & build fixes (issues #234, #258, #274, #275, #278)
* encoder & decoder speed-ups on x86/ARM/MIPS for lossy & lossless
- note! YUV->RGB conversion was sped-up, but the results will be slightly
different from previous releases
* various lossless encoder improvements
* gif2webp improvements, -min_size option added
* tools fully support input from stdin and output to stdout (issue #168)
* New WebPAnimEncoder API for creating animations
* New WebPAnimDecoder API for decoding animations
* other API changes:
- libwebp:
WebPPictureSmartARGBToYUVA() (-pre 4 in cwebp)
WebPConfig::exact (-exact in cwebp; -alpha_cleanup is now the default)
WebPConfig::near_lossless (-near_lossless in cwebp)
WebPFree() (free'ing webp allocated memory in other languages)
WebPConfigLosslessPreset()
WebPMemoryWriterClear()
- libwebpdemux: removed experimental fragment related fields and functions
- libwebpmux: WebPMuxSetCanvasSize()
* new libwebpextras library with some uncommon import functions:
WebPImportGray/WebPImportRGB565/WebPImportRGB4444
- 10/15/15: version 0.4.4
This is a binary compatible release.
* rescaling out-of-bounds read fix (issue #254)
* various build fixes and improvements (issues #253, #259, #262, #267, #268)
* container documentation update
* gif2webp transparency fix (issue #245)
- 3/3/15: version 0.4.3
This is a binary compatible release.
* Android / gcc / iOS / MSVS build fixes and improvements
* lossless decode fix (issue #239 -- since 0.4.0)
* documentation / vwebp updates for animation
* multi-threading fix (issue #234)
- 10/13/14: version 0.4.2
This is a binary compatible release.
* Android / gcc build fixes
* (Windows) fix reading from stdin and writing to stdout
* gif2webp: miscellaneous fixes
* fix 'alpha-leak' with lossy compression (issue #220)
* the lossless bitstream spec has been amended to reflect the current code
- 7/24/14: version 0.4.1
This is a binary compatible release.
* AArch64 (arm64) & MIPS support/optimizations
* NEON assembly additions:
- ~25% faster lossy decode / encode (-m 4)
- ~10% faster lossless decode
- ~5-10% faster lossless encode (-m 3/4)
* dwebp/vwebp can read from stdin
* cwebp/gif2webp can write to stdout
* cwebp can read webp files; useful if storing sources as webp lossless
- 12/19/13: version 0.4.0
* improved gif2webp tool
* numerous fixes, compression improvement and speed-up
* dither option added to decoder (dwebp -dither 50 ...)
* improved multi-threaded modes (-mt option)
* improved filtering strength determination
* New function: WebPMuxGetCanvasSize
* BMP and TIFF format output added to 'dwebp'
* Significant memory reduction for decoding lossy images with alpha.
* Intertwined decoding of RGB and alpha for a shorter
time-to-first-decoded-pixel.
* WebPIterator has a new member 'has_alpha' denoting whether the frame
contains transparency.
* Container spec amended with new 'blending method' for animation.
- 6/13/13: version 0.3.1
This is a binary compatible release.
* Add incremental decoding support for images containing ALPH and ICCP chunks.
* Python bindings via swig for the simple encode/decode interfaces similar to
Java.
- 3/20/13: version 0.3.0
This is a binary compatible release.
* WebPINewRGB/WebPINewYUVA accept being passed a NULL output buffer
and will perform auto-allocation.
* default filter option is now '-strong -f 60'
* encoding speed-up for lossy methods 3 to 6
* alpha encoding can be done in parallel to lossy using 'cwebp -mt ...'
* color profile, metadata (XMP/EXIF) and animation support finalized in the
container.
* various NEON assembly additions
Tool updates / additions:
* gif2webp added
* vwebp given color profile & animation support
* cwebp can preserve color profile / metadata with '-metadata'
- 10/30/12: version 0.2.1
* Various security related fixes
* cwebp.exe: fix import errors on Windows XP
* enable DLL builds for mingw targets
- 8/3/12: version 0.2.0
* Add support for ARGB -> YUVA conversion for lossless decoder
New functions: WebPINewYUVA, WebPIDecGetYUVA
* Add stats for lossless and alpha encoding
* Security related hardening: allocation and size checks
* Add PAM output support to dwebp
- 7/19/12: version 0.1.99
* This is a pre-release of 0.2.0, not an rc to allow for further
incompatible changes based on user feedback.
* Alpha channel encode/decode support.
* Lossless encoder/decoder.
* Add TIFF input support to cwebp.
Incompatible changes:
* The encode ABI has been modified to support alpha encoding.
* Deprecated function WebPINew() has been removed.
* Decode function signatures have changed to consistently use size_t over
int/uint32_t.
* decode_vp8.h is no longer installed system-wide.
* cwebp will encode the alpha channel if present.
- 9/19/11: version 0.1.3
* Advanced decoding APIs.
* On-the-fly cropping and rescaling of images.
* SSE2 instructions for decoding performance optimizations on x86 based
platforms.
* Support Multi-threaded decoding.
* 40% improvement in Decoding performance.
* Add support for RGB565, RGBA4444 & ARGB image colorspace.
* Better handling of large picture encoding.
- 3/25/11: version 0.1.2
* Incremental decoding: picture can be decoded byte-by-byte if needs be.
* lot of bug-fixes, consolidation and stabilization
- 2/23/11: initial release of version 0.1, with the new encoder
- 9/30/10: initial release version with only the lightweight decoder

23
external/libwebp/libwebp/PATENTS vendored
View File

@ -1,23 +0,0 @@
Additional IP Rights Grant (Patents)
------------------------------------
"These implementations" means the copyrightable works that implement the WebM
codecs distributed by Google as part of the WebM Project.
Google hereby grants to you a perpetual, worldwide, non-exclusive, no-charge,
royalty-free, irrevocable (except as stated in this section) patent license to
make, have made, use, offer to sell, sell, import, transfer, and otherwise
run, modify and propagate the contents of these implementations of WebM, where
such license applies only to those patent claims, both currently owned by
Google and acquired in the future, licensable by Google that are necessarily
infringed by these implementations of WebM. This grant does not include claims
that would be infringed only as a consequence of further modification of these
implementations. If you or your agent or exclusive licensee institute or order
or agree to the institution of patent litigation or any other patent
enforcement activity against any entity (including a cross-claim or
counterclaim in a lawsuit) alleging that any of these implementations of WebM
or any code incorporated within any of these implementations of WebM
constitute direct or contributory patent infringement, or inducement of
patent infringement, then any patent rights granted to you under this License
for these implementations of WebM shall terminate as of the date such
litigation is filed.

245
external/libwebp/libwebp/PRESUBMIT.py vendored
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@ -1,245 +0,0 @@
# Copyright (c) 2021, Google Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# * Neither the name of Google nor the names of its contributors may
# be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
"""Top-level presubmit script for libwebp.
See https://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts for
details on the presubmit API built into depot_tools.
"""
import re
import subprocess2
USE_PYTHON3 = True
_BASH_INDENTATION = "2"
_GIT_COMMIT_SUBJECT_LENGTH = 65
_INCLUDE_BASH_FILES_ONLY = [r".*\.sh$"]
_INCLUDE_MAN_FILES_ONLY = [r"man/.+\.1$"]
_INCLUDE_SOURCE_FILES_ONLY = [r".*\.[ch]$"]
_LIBWEBP_MAX_LINE_LENGTH = 80
def _CheckCommitSubjectLength(input_api, output_api):
"""Ensures commit's subject length is no longer than 65 chars."""
name = "git-commit subject"
cmd = ["git", "log", "-1", "--pretty=%s"]
start = input_api.time.time()
proc = subprocess2.Popen(
cmd,
stderr=subprocess2.PIPE,
stdout=subprocess2.PIPE,
universal_newlines=True)
stdout, _ = proc.communicate()
duration = input_api.time.time() - start
if not re.match(r"^Revert",
stdout) and (len(stdout) - 1) > _GIT_COMMIT_SUBJECT_LENGTH:
failure_msg = (
"The commit subject: %s is too long (%d chars)\n"
"Try to keep this to 50 or less (up to 65 is permitted for "
"non-reverts).\n"
"https://www.git-scm.com/book/en/v2/Distributed-Git-Contributing-to-a-"
"Project#_commit_guidelines") % (stdout, len(stdout) - 1)
return output_api.PresubmitError("%s\n (%4.2fs) failed\n%s" %
(name, duration, failure_msg))
return output_api.PresubmitResult("%s\n (%4.2fs) success" % (name, duration))
def _CheckDuplicateFiles(input_api, output_api):
"""Ensures there are not repeated filenames."""
all_files = []
for f in input_api.change.AllFiles():
for include_file in _INCLUDE_SOURCE_FILES_ONLY:
if re.match(include_file, f):
all_files.append(f)
break
basename_to_path = {}
for f in all_files:
basename_file = input_api.basename(f)
if basename_file in basename_to_path:
basename_to_path[basename_file].append(f)
else:
basename_to_path[basename_file] = [f]
dupes = []
for files in basename_to_path.values():
if len(files) > 1:
dupes.extend(files)
if dupes:
return output_api.PresubmitError(
"Duplicate source files, rebase or rename some to make them unique:\n%s"
% dupes)
return output_api.PresubmitResult("No duplicates, success\n")
def _GetFilesToSkip(input_api):
return list(input_api.DEFAULT_FILES_TO_SKIP) + [
r"swig/.*\.py$",
r"\.pylintrc$",
]
def _RunManCmd(input_api, output_api, man_file):
"""man command wrapper."""
cmd = ["man", "--warnings", "-EUTF-8", "-l", "-Tutf8", "-Z", man_file]
name = "Check %s file." % man_file
start = input_api.time.time()
output, _ = subprocess2.communicate(
cmd, stdout=None, stderr=subprocess2.PIPE, universal_newlines=True)
duration = input_api.time.time() - start
if output[1]:
return output_api.PresubmitError("%s\n%s (%4.2fs) failed\n%s" %
(name, " ".join(cmd), duration, output[1]))
return output_api.PresubmitResult("%s\n%s (%4.2fs)\n" %
(name, " ".join(cmd), duration))
def _RunShellCheckCmd(input_api, output_api, bash_file):
"""shellcheck command wrapper."""
cmd = ["shellcheck", "-x", "-oall", "-sbash", bash_file]
name = "Check %s file." % bash_file
start = input_api.time.time()
output, rc = subprocess2.communicate(
cmd, stdout=None, stderr=subprocess2.PIPE, universal_newlines=True)
duration = input_api.time.time() - start
if rc == 0:
return output_api.PresubmitResult("%s\n%s (%4.2fs)\n" %
(name, " ".join(cmd), duration))
return output_api.PresubmitError("%s\n%s (%4.2fs) failed\n%s" %
(name, " ".join(cmd), duration, output[1]))
def _RunShfmtCheckCmd(input_api, output_api, bash_file):
"""shfmt command wrapper."""
cmd = [
"shfmt", "-i", _BASH_INDENTATION, "-bn", "-ci", "-sr", "-kp", "-d",
bash_file
]
name = "Check %s file." % bash_file
start = input_api.time.time()
output, rc = subprocess2.communicate(
cmd, stdout=None, stderr=subprocess2.PIPE, universal_newlines=True)
duration = input_api.time.time() - start
if rc == 0:
return output_api.PresubmitResult("%s\n%s (%4.2fs)\n" %
(name, " ".join(cmd), duration))
return output_api.PresubmitError("%s\n%s (%4.2fs) failed\n%s" %
(name, " ".join(cmd), duration, output[1]))
def _RunCmdOnCheckedFiles(input_api, output_api, run_cmd, files_to_check):
"""Ensure that libwebp/ files are clean."""
file_filter = lambda x: input_api.FilterSourceFile(
x, files_to_check=files_to_check, files_to_skip=None)
affected_files = input_api.change.AffectedFiles(file_filter=file_filter)
results = [
run_cmd(input_api, output_api, f.AbsoluteLocalPath())
for f in affected_files
]
return results
def _CommonChecks(input_api, output_api):
"""Ensures this patch does not have trailing spaces, extra EOLs,
or long lines.
"""
results = []
results.extend(
input_api.canned_checks.CheckChangeHasNoCrAndHasOnlyOneEol(
input_api, output_api))
results.extend(
input_api.canned_checks.CheckChangeHasNoTabs(input_api, output_api))
results.extend(
input_api.canned_checks.CheckChangeHasNoStrayWhitespace(
input_api, output_api))
results.append(_CheckCommitSubjectLength(input_api, output_api))
results.append(_CheckDuplicateFiles(input_api, output_api))
source_file_filter = lambda x: input_api.FilterSourceFile(
x, files_to_skip=_GetFilesToSkip(input_api))
results.extend(
input_api.canned_checks.CheckLongLines(
input_api,
output_api,
maxlen=_LIBWEBP_MAX_LINE_LENGTH,
source_file_filter=source_file_filter))
results.extend(
input_api.canned_checks.CheckPatchFormatted(
input_api,
output_api,
check_clang_format=False,
check_python=True,
result_factory=output_api.PresubmitError))
results.extend(
_RunCmdOnCheckedFiles(input_api, output_api, _RunManCmd,
_INCLUDE_MAN_FILES_ONLY))
# Run pylint.
results.extend(
input_api.canned_checks.RunPylint(
input_api,
output_api,
files_to_skip=_GetFilesToSkip(input_api),
pylintrc=".pylintrc",
version="2.7"))
# Binaries shellcheck and shfmt are not installed in depot_tools.
# Installation is needed
try:
subprocess2.communicate(["shellcheck", "--version"])
results.extend(
_RunCmdOnCheckedFiles(input_api, output_api, _RunShellCheckCmd,
_INCLUDE_BASH_FILES_ONLY))
print("shfmt")
subprocess2.communicate(["shfmt", "-version"])
results.extend(
_RunCmdOnCheckedFiles(input_api, output_api, _RunShfmtCheckCmd,
_INCLUDE_BASH_FILES_ONLY))
except OSError as os_error:
results.append(
output_api.PresubmitPromptWarning(
"%s\nPlease install missing binaries locally." % os_error.args[0]))
return results
def CheckChangeOnUpload(input_api, output_api):
results = []
results.extend(_CommonChecks(input_api, output_api))
return results
def CheckChangeOnCommit(input_api, output_api):
results = []
results.extend(_CommonChecks(input_api, output_api))
return results

53
external/libwebp/libwebp/README.md vendored
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@ -1,53 +0,0 @@
# WebP Codec
```
__ __ ____ ____ ____
/ \\/ \/ _ \/ _ )/ _ \
\ / __/ _ \ __/
\__\__/\____/\_____/__/ ____ ___
/ _/ / \ \ / _ \/ _/
/ \_/ / / \ \ __/ \__
\____/____/\_____/_____/____/v1.3.1
```
WebP codec is a library to encode and decode images in WebP format. This package
contains the library that can be used in other programs to add WebP support, as
well as the command line tools 'cwebp' and 'dwebp' to compress and decompress
images respectively.
See https://developers.google.com/speed/webp for details on the image format.
The latest source tree is available at
https://chromium.googlesource.com/webm/libwebp
It is released under the same license as the WebM project. See
https://www.webmproject.org/license/software/ or the "COPYING" file for details.
An additional intellectual property rights grant can be found in the file
PATENTS.
## Building
See the [building documentation](doc/building.md).
## Encoding and Decoding Tools
The examples/ directory contains tools to encode and decode images and
animations, view information about WebP images, and more. See the
[tools documentation](doc/tools.md).
## APIs
See the [APIs documentation](doc/api.md), and API usage examples in the
`examples/` directory.
## Bugs
Please report all bugs to the issue tracker: https://bugs.chromium.org/p/webp
Patches welcome! See [how to contribute](CONTRIBUTING.md).
## Discuss
Email: webp-discuss@webmproject.org
Web: https://groups.google.com/a/webmproject.org/group/webp-discuss

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@ -1,2 +0,0 @@
#! /bin/sh -e
exec autoreconf -fi

444
external/libwebp/libwebp/build.gradle vendored
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@ -1,444 +0,0 @@
// Define dependencies.
buildscript {
repositories {
maven {
url "https://jcenter.bintray.com"
}
}
dependencies {
classpath "com.android.tools.build:gradle:${ANDROID_GRADLE_PLUGIN_VERSION}"
}
}
// Define versions in the project.
project.ext {
buildToolsVersion = "${BUILD_TOOLS_VERSION}"
compileSdkVersion = COMPILE_SDK_VERSION.toInteger()
}
// Core libraries and executables.
apply plugin: "c"
def NEON
model {
buildTypes {
debug
release
}
platforms {
arm {
architecture "arm"
}
arm64 {
architecture "arm64"
}
x86 {
architecture "x86"
}
x64 {
architecture "x86_64"
}
mips32r2
mips32r5
mips64r6
}
toolChains {
gcc(Gcc) {
target("mips32r2") {
cCompiler.args "-mips32r2"
}
target("mips32r5") {
cCompiler.args "-mips32r5"
}
target("mips64r6") {
cCompiler.args "-mips64r6"
}
}
}
binaries {
all {
if (toolChain in Gcc) {
cCompiler.args "-fPIC"
cCompiler.args "-Wall"
cCompiler.define "ANDROID"
cCompiler.define "HAVE_MALLOC_H"
}
// Optimizations.
if (buildType == buildTypes.release) {
if (toolChain in Gcc) {
cCompiler.args "-finline-functions"
cCompiler.args "-ffast-math"
cCompiler.args "-ffunction-sections"
cCompiler.args "-fdata-sections"
}
if (toolChain in Clang) {
cCompiler.args "-frename-registers -s"
}
}
// mips32 fails to build with clang from r14b
// https://bugs.chromium.org/p/webp/issues/detail?id=343
if (toolChain in Clang) {
if (getTargetPlatform() == "mips") {
cCompiler.args "-no-integrated-as"
}
}
// Check for NEON usage.
if (getTargetPlatform() == "arm") {
NEON = "c.neon"
cCompiler.define "HAVE_CPU_FEATURES_H"
} else {
NEON = "c"
}
cCompiler.args "-I" + file(".").absolutePath
}
// Link to pthread for shared libraries.
withType(SharedLibraryBinarySpec) {
if (toolChain in Gcc) {
cCompiler.define "HAVE_PTHREAD"
cCompiler.define "WEBP_USE_THREAD"
linker.args "-pthread"
}
}
}
components {
webp(NativeLibrarySpec) {
sources {
c {
source {
srcDir "sharpyuv"
include "sharpyuv.c"
include "sharpyuv_cpu.c"
include "sharpyuv_csp.c"
include "sharpyuv_dsp.c"
include "sharpyuv_gamma.c"
include "sharpyuv_neon.c"
include "sharpyuv_sse2.c"
srcDir "src/dec"
include "alpha_dec.c"
include "buffer_dec.c"
include "frame_dec.c"
include "idec_dec.c"
include "io_dec.c"
include "quant_dec.c"
include "tree_dec.c"
include "vp8_dec.c"
include "vp8l_dec.c"
include "webp_dec.c"
srcDir "src/dsp"
include "alpha_processing.c"
include "alpha_processing_mips_dsp_r2.c"
include "alpha_processing_neon.$NEON"
include "alpha_processing_sse2.c"
include "alpha_processing_sse41.c"
include "cpu.c"
include "dec.c"
include "dec_clip_tables.c"
include "dec_mips32.c"
include "dec_mips_dsp_r2.c"
include "dec_msa.c"
include "dec_neon.$NEON"
include "dec_sse2.c"
include "dec_sse41.c"
include "filters.c"
include "filters_mips_dsp_r2.c"
include "filters_msa.c"
include "filters_neon.$NEON"
include "filters_sse2.c"
include "lossless.c"
include "lossless_mips_dsp_r2.c"
include "lossless_msa.c"
include "lossless_neon.$NEON"
include "lossless_sse2.c"
include "lossless_sse41.c"
include "rescaler.c"
include "rescaler_mips32.c"
include "rescaler_mips_dsp_r2.c"
include "rescaler_msa.c"
include "rescaler_neon.$NEON"
include "rescaler_sse2.c"
include "upsampling.c"
include "upsampling_mips_dsp_r2.c"
include "upsampling_msa.c"
include "upsampling_neon.$NEON"
include "upsampling_sse2.c"
include "upsampling_sse41.c"
include "yuv.c"
include "yuv_mips32.c"
include "yuv_mips_dsp_r2.c"
include "yuv_neon.$NEON"
include "yuv_sse2.c"
include "yuv_sse41.c"
srcDir "src/utils"
include "bit_reader_utils.c"
include "color_cache_utils.c"
include "filters_utils.c"
include "huffman_utils.c"
include "palette.c"
include "quant_levels_dec_utils.c"
include "random_utils.c"
include "rescaler_utils.c"
include "thread_utils.c"
include "utils.c"
srcDir "src/dsp"
include "cost.c"
include "cost_mips32.c"
include "cost_mips_dsp_r2.c"
include "cost_neon.$NEON"
include "cost_sse2.c"
include "enc.c"
include "enc_mips32.c"
include "enc_mips_dsp_r2.c"
include "enc_msa.c"
include "enc_neon.$NEON"
include "enc_sse2.c"
include "enc_sse41.c"
include "lossless_enc.c"
include "lossless_enc_mips32.c"
include "lossless_enc_mips_dsp_r2.c"
include "lossless_enc_msa.c"
include "lossless_enc_neon.$NEON"
include "lossless_enc_sse2.c"
include "lossless_enc_sse41.c"
include "ssim.c"
include "ssim_sse2.c"
srcDir "src/enc"
include "alpha_enc.c"
include "analysis_enc.c"
include "backward_references_cost_enc.c"
include "backward_references_enc.c"
include "config_enc.c"
include "cost_enc.c"
include "filter_enc.c"
include "frame_enc.c"
include "histogram_enc.c"
include "iterator_enc.c"
include "near_lossless_enc.c"
include "picture_enc.c"
include "picture_csp_enc.c"
include "picture_psnr_enc.c"
include "picture_rescale_enc.c"
include "picture_tools_enc.c"
include "predictor_enc.c"
include "quant_enc.c"
include "syntax_enc.c"
include "token_enc.c"
include "tree_enc.c"
include "vp8l_enc.c"
include "webp_enc.c"
srcDir "src/utils"
include "bit_writer_utils.c"
include "huffman_encode_utils.c"
include "quant_levels_utils.c"
}
exportedHeaders {
srcDir "src"
}
}
}
}
webpdemux(NativeLibrarySpec) {
sources {
c {
source {
srcDir "src/demux"
include "anim_decode.c"
include "demux.c"
}
}
}
}
webpmux(NativeLibrarySpec) {
sources {
c {
source {
srcDir "src/mux/"
include "anim_encode.c"
include "muxedit.c"
include "muxinternal.c"
include "muxread.c"
}
}
}
}
// Executables from examples.
example_util(NativeLibrarySpec) {
binaries {
all {
lib library: "webp", linkage: "static"
}
}
sources {
c {
source {
srcDir "./examples"
include "example_util.c"
}
}
}
}
imageio_util(NativeLibrarySpec) {
binaries {
all {
lib library: "webp", linkage: "static"
}
}
sources {
c {
source {
srcDir "./imageio"
include "imageio_util.c"
}
}
}
}
imagedec(NativeLibrarySpec) {
binaries {
all {
lib library: "webpdemux", linkage: "static"
lib library: "webp", linkage: "static"
}
}
sources {
c {
source {
srcDir "./imageio"
include "image_dec.c"
include "jpegdec.c"
include "metadata.c"
include "pngdec.c"
include "pnmdec.c"
include "tiffdec.c"
include "webpdec.c"
}
}
}
}
imageenc(NativeLibrarySpec) {
binaries {
all {
lib library: "webp", linkage: "static"
lib library: "imageio_util", linkage: "static"
}
}
sources {
c {
source {
srcDir "./imageio"
include "image_enc.c"
}
}
}
}
cwebp(NativeExecutableSpec) {
binaries {
all {
lib library: "example_util", linkage: "static"
lib library: "imagedec", linkage: "static"
lib library: "imageio_util", linkage: "static"
lib library: "webpdemux", linkage: "static"
lib library: "webp", linkage: "static"
}
}
sources {
c {
source {
srcDir "./examples"
include "cwebp.c"
}
}
}
}
dwebp(NativeExecutableSpec) {
binaries {
all {
lib library: "example_util", linkage: "static"
lib library: "imagedec", linkage: "static"
lib library: "imageenc", linkage: "static"
lib library: "imageio_util", linkage: "static"
lib library: "webpdemux", linkage: "static"
lib library: "webp"
}
}
sources {
c {
source {
srcDir "./examples"
include "dwebp.c"
}
}
}
}
webpmux_example(NativeExecutableSpec) {
binaries {
all {
lib library: "example_util", linkage: "static"
lib library: "imageio_util", linkage: "static"
lib library: "webpmux", linkage: "static"
lib library: "webp"
}
}
sources {
c {
source {
srcDir "./examples"
include "webpmux.c"
}
}
}
}
img2webp_example(NativeExecutableSpec) {
binaries {
all {
lib library: "example_util", linkage: "static"
lib library: "imagedec", linkage: "static"
lib library: "imageio_util", linkage: "static"
lib library: "webpmux", linkage: "static"
lib library: "webpdemux", linkage: "static"
lib library: "webp"
}
}
sources {
c {
source {
srcDir "./examples"
include "img2webp.c"
}
}
}
}
webpinfo_example(NativeExecutableSpec) {
binaries {
all {
lib library: "example_util", linkage: "static"
lib library: "imageio_util", linkage: "static"
lib library: "webp"
}
}
sources {
c {
source {
srcDir "./examples"
include "webpinfo.c"
}
}
}
}
}
tasks {
// Task to test all possible configurations.
buildAllExecutables(Task) {
dependsOn $.binaries.findAll { it.buildable }
}
}
}

18
external/libwebp/libwebp/cmake/WebPConfig.cmake.in vendored
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@ -1,18 +0,0 @@
set(WebP_VERSION @PROJECT_VERSION@)
set(WEBP_VERSION ${WebP_VERSION})
@PACKAGE_INIT@
if(@WEBP_USE_THREAD@)
include(CMakeFindDependencyMacro)
find_dependency(Threads REQUIRED)
endif()
include("${CMAKE_CURRENT_LIST_DIR}/@PROJECT_NAME@Targets.cmake")
set_and_check(WebP_INCLUDE_DIR "@PACKAGE_CMAKE_INSTALL_INCLUDEDIR@")
set(WEBP_INCLUDE_DIRS ${WebP_INCLUDE_DIRS})
set(WebP_LIBRARIES "@INSTALLED_LIBRARIES@")
set(WEBP_LIBRARIES "${WebP_LIBRARIES}")
check_required_components(WebP)

116
external/libwebp/libwebp/cmake/config.h.in vendored
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@ -1,116 +0,0 @@
/* Adapted from the autotools src/webp/config.h.in. */
/* Define if building universal (internal helper macro) */
/* TODO: handle properly in CMake */
#cmakedefine AC_APPLE_UNIVERSAL_BUILD 1
/* Set to 1 if __builtin_bswap16 is available */
#cmakedefine HAVE_BUILTIN_BSWAP16 1
/* Set to 1 if __builtin_bswap32 is available */
#cmakedefine HAVE_BUILTIN_BSWAP32 1
/* Set to 1 if __builtin_bswap64 is available */
#cmakedefine HAVE_BUILTIN_BSWAP64 1
/* Define to 1 if you have the <cpu-features.h> header file. */
#cmakedefine HAVE_CPU_FEATURES_H 1
/* Define to 1 if you have the <GLUT/glut.h> header file. */
#cmakedefine HAVE_GLUT_GLUT_H 1
/* Define to 1 if you have the <GL/glut.h> header file. */
#cmakedefine HAVE_GL_GLUT_H 1
/* Define to 1 if you have the <OpenGL/glut.h> header file. */
#cmakedefine HAVE_OPENGL_GLUT_H 1
/* Define to 1 if you have the <shlwapi.h> header file. */
#cmakedefine HAVE_SHLWAPI_H 1
/* Define to 1 if you have the <unistd.h> header file. */
#cmakedefine HAVE_UNISTD_H 1
/* Define to 1 if you have the <wincodec.h> header file. */
#cmakedefine HAVE_WINCODEC_H 1
/* Define to 1 if you have the <windows.h> header file. */
#cmakedefine HAVE_WINDOWS_H 1
/* Define to the sub-directory in which libtool stores uninstalled libraries.
*/
/* TODO: handle properly in CMake */
#cmakedefine LT_OBJDIR "@LT_OBJDIR@"
/* Name of package */
#cmakedefine PACKAGE "@PROJECT_NAME@"
/* Define to the address where bug reports for this package should be sent. */
#cmakedefine PACKAGE_BUGREPORT "@PACKAGE_BUGREPORT@"
/* Define to the full name of this package. */
#cmakedefine PACKAGE_NAME "@PACKAGE_NAME@"
/* Define to the full name and version of this package. */
#cmakedefine PACKAGE_STRING "@PACKAGE_STRING@"
/* Define to the one symbol short name of this package. */
#cmakedefine PACKAGE_TARNAME "@PACKAGE_TARNAME@"
/* Define to the home page for this package. */
#cmakedefine PACKAGE_URL "@PACKAGE_URL@"
/* Define to the version of this package. */
#cmakedefine PACKAGE_VERSION "@PACKAGE_VERSION@"
/* Version number of package */
#cmakedefine VERSION "@VERSION@"
/* Set to 1 if GIF library is installed */
#cmakedefine WEBP_HAVE_GIF 1
/* Set to 1 if OpenGL is supported */
#cmakedefine WEBP_HAVE_GL 1
/* Set to 1 if JPEG library is installed */
#cmakedefine WEBP_HAVE_JPEG 1
/* Set to 1 if NEON is supported */
#cmakedefine WEBP_HAVE_NEON
/* Set to 1 if runtime detection of NEON is enabled */
/* TODO: handle properly in CMake */
#cmakedefine WEBP_HAVE_NEON_RTCD
/* Set to 1 if PNG library is installed */
#cmakedefine WEBP_HAVE_PNG 1
/* Set to 1 if SDL library is installed */
#cmakedefine WEBP_HAVE_SDL 1
/* Set to 1 if SSE2 is supported */
#cmakedefine WEBP_HAVE_SSE2 1
/* Set to 1 if SSE4.1 is supported */
#cmakedefine WEBP_HAVE_SSE41 1
/* Set to 1 if TIFF library is installed */
#cmakedefine WEBP_HAVE_TIFF 1
/* Enable near lossless encoding */
#cmakedefine WEBP_NEAR_LOSSLESS 1
/* Undefine this to disable thread support. */
#cmakedefine WEBP_USE_THREAD 1
/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
significant byte first (like Motorola and SPARC, unlike Intel). */
#if defined AC_APPLE_UNIVERSAL_BUILD
# if defined __BIG_ENDIAN__
# define WORDS_BIGENDIAN 1
# endif
#else
# ifndef WORDS_BIGENDIAN
# undef WORDS_BIGENDIAN
# endif
#endif

159
external/libwebp/libwebp/cmake/cpu.cmake vendored
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@ -1,159 +0,0 @@
# Copyright (c) 2021 Google LLC.
#
# Use of this source code is governed by a BSD-style license
# that can be found in the LICENSE file in the root of the source
# tree. An additional intellectual property rights grant can be found
# in the file PATENTS. All contributing project authors may
# be found in the AUTHORS file in the root of the source tree.
# Check for SIMD extensions.
include(CMakePushCheckState)
function(webp_check_compiler_flag WEBP_SIMD_FLAG ENABLE_SIMD)
if(NOT ENABLE_SIMD)
message(STATUS "Disabling ${WEBP_SIMD_FLAG} optimization.")
set(WEBP_HAVE_${WEBP_SIMD_FLAG} 0 PARENT_SCOPE)
return()
endif()
unset(WEBP_HAVE_FLAG_${WEBP_SIMD_FLAG} CACHE)
cmake_push_check_state()
set(CMAKE_REQUIRED_INCLUDES ${CMAKE_CURRENT_SOURCE_DIR})
check_c_source_compiles(
"
#include \"${CMAKE_CURRENT_LIST_DIR}/../src/dsp/dsp.h\"
int main(void) {
#if !defined(WEBP_USE_${WEBP_SIMD_FLAG})
this is not valid code
#endif
return 0;
}
"
WEBP_HAVE_FLAG_${WEBP_SIMD_FLAG})
cmake_pop_check_state()
if(WEBP_HAVE_FLAG_${WEBP_SIMD_FLAG})
set(WEBP_HAVE_${WEBP_SIMD_FLAG} 1 PARENT_SCOPE)
else()
set(WEBP_HAVE_${WEBP_SIMD_FLAG} 0 PARENT_SCOPE)
endif()
endfunction()
# those are included in the names of WEBP_USE_* in c++ code.
set(WEBP_SIMD_FLAGS "SSE41;SSE2;MIPS32;MIPS_DSP_R2;NEON;MSA")
set(WEBP_SIMD_FILE_EXTENSIONS
"_sse41.c;_sse2.c;_mips32.c;_mips_dsp_r2.c;_neon.c;_msa.c")
if(MSVC AND CMAKE_C_COMPILER_ID STREQUAL "MSVC")
# With at least Visual Studio 12 (2013)+ /arch is not necessary to build SSE2
# or SSE4 code unless a lesser /arch is forced. MSVC does not have a SSE4
# flag, but an AVX one. Using that with SSE4 code risks generating illegal
# instructions when used on machines with SSE4 only. The flags are left for
# older (untested) versions to avoid any potential compatibility issues.
if(MSVC_VERSION GREATER_EQUAL 1800 AND NOT CMAKE_C_FLAGS MATCHES "/arch:")
set(SIMD_ENABLE_FLAGS)
else()
set(SIMD_ENABLE_FLAGS "/arch:AVX;/arch:SSE2;;;;")
endif()
set(SIMD_DISABLE_FLAGS)
else()
set(SIMD_ENABLE_FLAGS "-msse4.1;-msse2;-mips32;-mdspr2;-mfpu=neon;-mmsa")
set(SIMD_DISABLE_FLAGS "-mno-sse4.1;-mno-sse2;;-mno-dspr2;;-mno-msa")
endif()
set(WEBP_SIMD_FILES_TO_INCLUDE)
set(WEBP_SIMD_FLAGS_TO_INCLUDE)
if(${ANDROID})
if(${ANDROID_ABI} STREQUAL "armeabi-v7a")
# This is because Android studio uses the configuration "-march=armv7-a
# -mfloat-abi=softfp -mfpu=vfpv3-d16" that does not trigger neon
# optimizations but should (as this configuration does not exist anymore).
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mfpu=neon ")
endif()
endif()
list(LENGTH WEBP_SIMD_FLAGS WEBP_SIMD_FLAGS_LENGTH)
math(EXPR WEBP_SIMD_FLAGS_RANGE "${WEBP_SIMD_FLAGS_LENGTH} - 1")
foreach(I_SIMD RANGE ${WEBP_SIMD_FLAGS_RANGE})
# With Emscripten 2.0.9 -msimd128 -mfpu=neon will enable NEON, but the source
# will fail to compile.
if(EMSCRIPTEN AND ${I_SIMD} GREATER_EQUAL 2)
break()
endif()
list(GET WEBP_SIMD_FLAGS ${I_SIMD} WEBP_SIMD_FLAG)
# First try with no extra flag added as the compiler might have default flags
# (especially on Android).
unset(WEBP_HAVE_${WEBP_SIMD_FLAG} CACHE)
cmake_push_check_state()
set(CMAKE_REQUIRED_FLAGS)
webp_check_compiler_flag(${WEBP_SIMD_FLAG} ${WEBP_ENABLE_SIMD})
if(NOT WEBP_HAVE_${WEBP_SIMD_FLAG})
list(GET SIMD_ENABLE_FLAGS ${I_SIMD} SIMD_COMPILE_FLAG)
if(EMSCRIPTEN)
set(SIMD_COMPILE_FLAG "-msimd128 ${SIMD_COMPILE_FLAG}")
endif()
set(CMAKE_REQUIRED_FLAGS ${SIMD_COMPILE_FLAG})
webp_check_compiler_flag(${WEBP_SIMD_FLAG} ${WEBP_ENABLE_SIMD})
else()
if(MSVC AND SIMD_ENABLE_FLAGS)
# The detection for SSE2/SSE4 support under MSVC is based on the compiler
# version so e.g., clang-cl will require flags to enable the assembly.
list(GET SIMD_ENABLE_FLAGS ${I_SIMD} SIMD_COMPILE_FLAG)
else()
set(SIMD_COMPILE_FLAG " ")
endif()
endif()
# Check which files we should include or not.
list(GET WEBP_SIMD_FILE_EXTENSIONS ${I_SIMD} WEBP_SIMD_FILE_EXTENSION)
file(GLOB SIMD_FILES "${CMAKE_CURRENT_LIST_DIR}/../"
"src/dsp/*${WEBP_SIMD_FILE_EXTENSION}")
if(WEBP_HAVE_${WEBP_SIMD_FLAG})
# Memorize the file and flags.
foreach(FILE ${SIMD_FILES})
list(APPEND WEBP_SIMD_FILES_TO_INCLUDE ${FILE})
list(APPEND WEBP_SIMD_FLAGS_TO_INCLUDE ${SIMD_COMPILE_FLAG})
endforeach()
else()
# Remove the file from the list.
foreach(FILE ${SIMD_FILES})
list(APPEND WEBP_SIMD_FILES_NOT_TO_INCLUDE ${FILE})
endforeach()
# Explicitly disable SIMD.
if(SIMD_DISABLE_FLAGS)
list(GET SIMD_DISABLE_FLAGS ${I_SIMD} SIMD_COMPILE_FLAG)
include(CheckCCompilerFlag)
if(SIMD_COMPILE_FLAG)
# Between 3.17.0 and 3.18.2 check_cxx_compiler_flag() sets a normal
# variable at parent scope while check_cxx_source_compiles() continues
# to set an internal cache variable, so we unset both to avoid the
# failure / success state persisting between checks. See
# https://gitlab.kitware.com/cmake/cmake/-/issues/21207.
unset(HAS_COMPILE_FLAG)
unset(HAS_COMPILE_FLAG CACHE)
check_c_compiler_flag(${SIMD_COMPILE_FLAG} HAS_COMPILE_FLAG)
if(HAS_COMPILE_FLAG)
# Do one more check for Clang to circumvent CMake issue 13194.
if(COMMAND check_compiler_flag_common_patterns)
# Only in CMake 3.0 and above.
check_compiler_flag_common_patterns(COMMON_PATTERNS)
else()
set(COMMON_PATTERNS)
endif()
set(CMAKE_REQUIRED_DEFINITIONS ${SIMD_COMPILE_FLAG})
check_c_source_compiles(
"int main(void) {return 0;}" FLAG_${SIMD_COMPILE_FLAG} FAIL_REGEX
"warning: argument unused during compilation:" ${COMMON_PATTERNS})
if(NOT FLAG_${SIMD_COMPILE_FLAG})
unset(HAS_COMPILE_FLAG)
unset(HAS_COMPILE_FLAG CACHE)
endif()
endif()
if(HAS_COMPILE_FLAG)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${SIMD_COMPILE_FLAG}")
endif()
endif()
endif()
endif()
cmake_pop_check_state()
endforeach()

172
external/libwebp/libwebp/cmake/deps.cmake vendored
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@ -1,172 +0,0 @@
# Copyright (c) 2021 Google LLC.
#
# Use of this source code is governed by a BSD-style license
# that can be found in the LICENSE file in the root of the source
# tree. An additional intellectual property rights grant can be found
# in the file PATENTS. All contributing project authors may
# be found in the AUTHORS file in the root of the source tree.
# Generate the config.h to compile with specific intrinsics / libs.
# Check for compiler options.
include(CheckCSourceCompiles)
check_c_source_compiles(
"
int main(void) {
(void)__builtin_bswap16(0);
return 0;
}
"
HAVE_BUILTIN_BSWAP16)
check_c_source_compiles(
"
int main(void) {
(void)__builtin_bswap32(0);
return 0;
}
"
HAVE_BUILTIN_BSWAP32)
check_c_source_compiles(
"
int main(void) {
(void)__builtin_bswap64(0);
return 0;
}
"
HAVE_BUILTIN_BSWAP64)
# Check for libraries.
if(WEBP_USE_THREAD)
find_package(Threads)
if(Threads_FOUND)
# work around cmake bug on QNX (https://cmake.org/Bug/view.php?id=11333)
if(CMAKE_USE_PTHREADS_INIT AND NOT CMAKE_SYSTEM_NAME STREQUAL "QNX")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pthread")
endif()
list(APPEND WEBP_DEP_LIBRARIES Threads::Threads)
endif()
set(WEBP_USE_THREAD ${Threads_FOUND})
endif()
# TODO: this seems unused, check with autotools.
set(LT_OBJDIR ".libs/")
# Only useful for vwebp, so useless for now.
find_package(OpenGL)
set(WEBP_HAVE_GL ${OPENGL_FOUND})
# Check if we need to link to the C math library. We do not look for it as it is
# not found when cross-compiling, while it is here.
check_c_source_compiles(
"
#include <math.h>
int main(int argc, char** argv) {
return (int)pow(argc, 2.5);
}
"
HAVE_MATH_LIBRARY)
if(NOT HAVE_MATH_LIBRARY)
message(STATUS "Adding -lm flag.")
list(APPEND SHARPYUV_DEP_LIBRARIES m)
list(APPEND WEBP_DEP_LIBRARIES m)
endif()
# Find the standard image libraries.
set(WEBP_DEP_IMG_LIBRARIES)
set(WEBP_DEP_IMG_INCLUDE_DIRS)
if(WEBP_FIND_IMG_LIBS)
foreach(I_LIB PNG JPEG TIFF)
# Disable tiff when compiling in static mode as it is failing on Ubuntu.
if(WEBP_LINK_STATIC AND ${I_LIB} STREQUAL "TIFF")
message(STATUS "TIFF is disabled when statically linking.")
continue()
endif()
find_package(${I_LIB})
set(WEBP_HAVE_${I_LIB} ${${I_LIB}_FOUND})
if(${I_LIB}_FOUND)
list(APPEND WEBP_DEP_IMG_LIBRARIES ${${I_LIB}_LIBRARIES})
list(APPEND WEBP_DEP_IMG_INCLUDE_DIRS ${${I_LIB}_INCLUDE_DIR}
${${I_LIB}_INCLUDE_DIRS})
endif()
endforeach()
if(WEBP_DEP_IMG_INCLUDE_DIRS)
list(REMOVE_DUPLICATES WEBP_DEP_IMG_INCLUDE_DIRS)
endif()
# GIF detection, gifdec isn't part of the imageio lib.
include(CMakePushCheckState)
set(WEBP_DEP_GIF_LIBRARIES)
set(WEBP_DEP_GIF_INCLUDE_DIRS)
find_package(GIF)
set(WEBP_HAVE_GIF ${GIF_FOUND})
if(GIF_FOUND)
# GIF find_package only locates the header and library, it doesn't fail
# compile tests when detecting the version, but falls back to 3 (as of at
# least cmake 3.7.2). Make sure the library links to avoid incorrect
# detection when cross compiling.
cmake_push_check_state()
set(CMAKE_REQUIRED_LIBRARIES ${GIF_LIBRARIES})
set(CMAKE_REQUIRED_INCLUDES ${GIF_INCLUDE_DIR})
check_c_source_compiles(
"
#include <gif_lib.h>
int main(void) {
(void)DGifOpenFileHandle;
return 0;
}
"
GIF_COMPILES)
cmake_pop_check_state()
if(GIF_COMPILES)
list(APPEND WEBP_DEP_GIF_LIBRARIES ${GIF_LIBRARIES})
list(APPEND WEBP_DEP_GIF_INCLUDE_DIRS ${GIF_INCLUDE_DIR})
else()
unset(GIF_FOUND)
endif()
endif()
endif()
# Check for specific headers.
include(CheckIncludeFiles)
check_include_files(GLUT/glut.h HAVE_GLUT_GLUT_H)
check_include_files(GL/glut.h HAVE_GL_GLUT_H)
check_include_files(OpenGL/glut.h HAVE_OPENGL_GLUT_H)
check_include_files(shlwapi.h HAVE_SHLWAPI_H)
check_include_files(unistd.h HAVE_UNISTD_H)
check_include_files(wincodec.h HAVE_WINCODEC_H)
check_include_files(windows.h HAVE_WINDOWS_H)
# Windows specifics
if(HAVE_WINCODEC_H)
list(APPEND WEBP_DEP_LIBRARIES shlwapi ole32 windowscodecs)
endif()
# Check for SIMD extensions.
include(${CMAKE_CURRENT_LIST_DIR}/cpu.cmake)
# Define extra info.
set(PACKAGE ${PROJECT_NAME})
set(PACKAGE_NAME ${PROJECT_NAME})
# Read from configure.ac.
file(READ ${CMAKE_CURRENT_SOURCE_DIR}/configure.ac CONFIGURE_AC)
string(REGEX MATCHALL "\\[([0-9a-z\\.:/]*)\\]" CONFIGURE_AC_PACKAGE_INFO
${CONFIGURE_AC})
function(strip_bracket VAR)
string(LENGTH ${${VAR}} TMP_LEN)
math(EXPR TMP_LEN ${TMP_LEN}-2)
string(SUBSTRING ${${VAR}} 1 ${TMP_LEN} TMP_SUB)
set(${VAR} ${TMP_SUB} PARENT_SCOPE)
endfunction()
list(GET CONFIGURE_AC_PACKAGE_INFO 1 PACKAGE_VERSION)
strip_bracket(PACKAGE_VERSION)
list(GET CONFIGURE_AC_PACKAGE_INFO 2 PACKAGE_BUGREPORT)
strip_bracket(PACKAGE_BUGREPORT)
list(GET CONFIGURE_AC_PACKAGE_INFO 3 PACKAGE_URL)
strip_bracket(PACKAGE_URL)
# Build more info.
set(PACKAGE_STRING "${PACKAGE_NAME} ${PACKAGE_VERSION}")
set(PACKAGE_TARNAME ${PACKAGE_NAME})
set(VERSION ${PACKAGE_VERSION})

4
external/libwebp/libwebp/codereview.settings vendored
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@ -1,4 +0,0 @@
# This file is used by git cl to get repository specific information.
GERRIT_HOST: True
CODE_REVIEW_SERVER: chromium-review.googlesource.com
GERRIT_SQUASH_UPLOADS: False

803
external/libwebp/libwebp/configure.ac vendored
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@ -1,803 +0,0 @@
AC_INIT([libwebp], [1.3.1],
[https://bugs.chromium.org/p/webp],,
[https://developers.google.com/speed/webp])
AC_CANONICAL_HOST
AC_PREREQ([2.60])
AM_INIT_AUTOMAKE([-Wall foreign subdir-objects])
dnl === automake >= 1.12 requires this for 'unusual archivers' support.
dnl === it must occur before LT_INIT (AC_PROG_LIBTOOL).
m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
dnl === AC_PROG_LIBTOOL is deprecated.
m4_ifdef([LT_INIT], [LT_INIT], [AC_PROG_LIBTOOL])
AC_PROG_SED
AM_PROG_CC_C_O
dnl === Enable less verbose output when building.
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
dnl == test endianness
AC_C_BIGENDIAN
dnl === SET_IF_UNSET(shell_var, value)
dnl === Set the shell variable 'shell_var' to 'value' if it is unset.
AC_DEFUN([SET_IF_UNSET], [test "${$1+set}" = "set" || $1=$2])
AC_ARG_ENABLE([everything],
AS_HELP_STRING([--enable-everything],
[Enable all optional targets. These can still be
disabled with --disable-target]),
[SET_IF_UNSET([enable_libsharpyuv], [$enableval])
SET_IF_UNSET([enable_libwebpdecoder], [$enableval])
SET_IF_UNSET([enable_libwebpdemux], [$enableval])
SET_IF_UNSET([enable_libwebpextras], [$enableval])
SET_IF_UNSET([enable_libwebpmux], [$enableval])])
dnl === Check whether libwebpmux should be built
AC_MSG_CHECKING(whether libwebpmux is to be built)
AC_ARG_ENABLE([libwebpmux],
AS_HELP_STRING([--disable-libwebpmux],
[Disable libwebpmux @<:@default=no@:>@]),
[], [enable_libwebpmux=yes])
AC_MSG_RESULT(${enable_libwebpmux-no})
AM_CONDITIONAL([BUILD_MUX], [test "$enable_libwebpmux" = "yes"])
dnl === Check whether libwebpdemux should be built
AC_MSG_CHECKING(whether libwebpdemux is to be built)
AC_ARG_ENABLE([libwebpdemux],
AS_HELP_STRING([--disable-libwebpdemux],
[Disable libwebpdemux @<:@default=no@:>@]),
[], [enable_libwebpdemux=yes])
AC_MSG_RESULT(${enable_libwebpdemux-no})
AM_CONDITIONAL([BUILD_DEMUX], [test "$enable_libwebpdemux" = "yes"])
dnl === Check whether decoder library should be built.
AC_MSG_CHECKING(whether decoder library is to be built)
AC_ARG_ENABLE([libwebpdecoder],
AS_HELP_STRING([--enable-libwebpdecoder],
[Build libwebpdecoder @<:@default=no@:>@]))
AC_MSG_RESULT(${enable_libwebpdecoder-no})
AM_CONDITIONAL([BUILD_LIBWEBPDECODER], [test "$enable_libwebpdecoder" = "yes"])
dnl === Check whether libwebpextras should be built
AC_MSG_CHECKING(whether libwebpextras is to be built)
AC_ARG_ENABLE([libwebpextras],
AS_HELP_STRING([--enable-libwebpextras],
[Build libwebpextras @<:@default=no@:>@]))
AC_MSG_RESULT(${enable_libwebpextras-no})
AM_CONDITIONAL([BUILD_EXTRAS], [test "$enable_libwebpextras" = "yes"])
dnl === If --enable-asserts is not defined, define NDEBUG
AC_MSG_CHECKING(whether asserts are enabled)
AC_ARG_ENABLE([asserts],
AS_HELP_STRING([--enable-asserts],
[Enable assert checks]))
if test "x${enable_asserts-no}" = "xno"; then
AM_CPPFLAGS="${AM_CPPFLAGS} -DNDEBUG"
fi
AC_MSG_RESULT(${enable_asserts-no})
AC_SUBST([AM_CPPFLAGS])
AC_ARG_WITH([pkgconfigdir], AS_HELP_STRING([--with-pkgconfigdir=DIR],
[Path to the pkgconfig directory @<:@LIBDIR/pkgconfig@:>@]),
[pkgconfigdir="$withval"], [pkgconfigdir='${libdir}/pkgconfig'])
AC_SUBST([pkgconfigdir])
dnl === TEST_AND_ADD_CFLAGS(var, flag)
dnl === Checks whether $CC supports 'flag' and adds it to 'var'
dnl === on success.
AC_DEFUN([TEST_AND_ADD_CFLAGS],
[SAVED_CFLAGS="$CFLAGS"
CFLAGS="-Werror $2"
AC_MSG_CHECKING([whether $CC supports $2])
dnl Note AC_LANG_PROGRAM([]) uses an old-style main definition.
AC_COMPILE_IFELSE([AC_LANG_SOURCE([int main(void) { return 0; }])],
[AC_MSG_RESULT([yes])]
dnl Simply append the variable avoiding a
dnl compatibility ifdef for AS_VAR_APPEND as this
dnl variable shouldn't grow all that large.
[$1="${$1} $2"],
[AC_MSG_RESULT([no])])
CFLAGS="$SAVED_CFLAGS"])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-fvisibility=hidden])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wall])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wconstant-conversion])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wdeclaration-after-statement])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wextra])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wfloat-conversion])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wformat -Wformat-nonliteral])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wformat -Wformat-security])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wmissing-declarations])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wmissing-prototypes])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wold-style-definition])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wparentheses-equality])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wshadow])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wshorten-64-to-32])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wundef])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wunreachable-code-aggressive])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wunreachable-code])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wunused-but-set-variable])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wunused])
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wvla])
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62040
# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61622
AS_IF([test "$GCC" = "yes" ], [
gcc_version=`$CC -dumpversion`
gcc_wht_bug=""
case "$host_cpu" in
aarch64|arm64)
case "$gcc_version" in
4.9|4.9.0|4.9.1) gcc_wht_bug=yes ;;
esac
esac
AS_IF([test "$gcc_wht_bug" = "yes"], [
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-frename-registers])])])
# Use -flax-vector-conversions, if available, when building intrinsics with
# older versions of gcc. The flag appeared in 4.3.x, but if backported, and
# -fno-lax-vector-conversions is set, errors may occur with the intrinsics
# files along with the older system includes, e.g., emmintrin.h.
# Originally observed with cc (GCC) 4.2.1 20070831 patched [FreeBSD] (9.3).
# https://bugs.chromium.org/p/webp/issues/detail?id=274
AS_IF([test "$GCC" = "yes" ], [
case "$host_cpu" in
amd64|i?86|x86_64)
AC_COMPILE_IFELSE(
dnl only check for -flax-vector-conversions with older gcc, skip
dnl clang as it reports itself as 4.2.1, but the flag isn't needed.
[AC_LANG_SOURCE([#if !defined(__clang__) && defined(__GNUC__) && \
((__GNUC__ << 8) | __GNUC_MINOR__) < 0x403
#error old gcc
#endif
int main(void) { return 0; }
])],,
[TEST_AND_ADD_CFLAGS([INTRINSICS_CFLAGS],
[-flax-vector-conversions])])
;;
esac])
AC_SUBST([AM_CFLAGS])
dnl === Check for machine specific flags
AC_ARG_ENABLE([sse4.1],
AS_HELP_STRING([--disable-sse4.1],
[Disable detection of SSE4.1 support
@<:@default=auto@:>@]))
AS_IF([test "x$enable_sse4_1" != "xno" -a "x$enable_sse2" != "xno"], [
SSE41_FLAGS="$INTRINSICS_CFLAGS $SSE41_FLAGS"
TEST_AND_ADD_CFLAGS([SSE41_FLAGS], [-msse4.1])
AS_IF([test -n "$SSE41_FLAGS"], [
SAVED_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $SSE41_FLAGS"
AC_CHECK_HEADER([smmintrin.h],
[AC_DEFINE(WEBP_HAVE_SSE41, [1],
[Set to 1 if SSE4.1 is supported])],
[SSE41_FLAGS=""])
CFLAGS=$SAVED_CFLAGS])
AC_SUBST([SSE41_FLAGS])])
AC_ARG_ENABLE([sse2],
AS_HELP_STRING([--disable-sse2],
[Disable detection of SSE2 support
@<:@default=auto@:>@]))
AS_IF([test "x$enable_sse2" != "xno"], [
SSE2_FLAGS="$INTRINSICS_CFLAGS $SSE2_FLAGS"
TEST_AND_ADD_CFLAGS([SSE2_FLAGS], [-msse2])
AS_IF([test -n "$SSE2_FLAGS"], [
SAVED_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $SSE2_FLAGS"
AC_CHECK_HEADER([emmintrin.h],
[AC_DEFINE(WEBP_HAVE_SSE2, [1],
[Set to 1 if SSE2 is supported])],
[SSE2_FLAGS=""])
CFLAGS=$SAVED_CFLAGS])
AC_SUBST([SSE2_FLAGS])])
AC_ARG_ENABLE([neon],
AS_HELP_STRING([--disable-neon],
[Disable detection of NEON support
@<:@default=auto@:>@]))
AC_ARG_ENABLE([neon_rtcd],
AS_HELP_STRING([--disable-neon-rtcd],
[Disable runtime detection of NEON support via
/proc/cpuinfo on Linux hosts
@<:@default=auto@:>@]))
# For ARM(7) hosts:
# Both NEON flags unset and NEON support detected = build all modules with NEON
# NEON detected with the use of -mfpu=neon = build only NEON modules with NEON
AS_IF([test "x$enable_neon" != "xno"], [
case "$host_cpu" in
arm|armv7*)
# Test for NEON support without flags before falling back to -mfpu=neon
for flag in '' '-mfpu=neon'; do
LOCAL_NEON_FLAGS="$INTRINSICS_CFLAGS $NEON_FLAGS"
TEST_AND_ADD_CFLAGS([LOCAL_NEON_FLAGS], [$flag])
SAVED_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS $LOCAL_NEON_FLAGS"
dnl Note AC_LANG_PROGRAM([]) uses an old-style main definition.
AC_COMPILE_IFELSE([AC_LANG_SOURCE([
#include <arm_neon.h>
int main(void) {
int8x8_t v = vdup_n_s8(0);
(void)v;
return 0;
}])],
[NEON_FLAGS="$(echo $LOCAL_NEON_FLAGS | $SED 's/^ *//')"
AS_IF([test -n "$NEON_FLAGS"], [
AS_IF([test "${host_os%%-*}" = "linux" -o \
"x$enable_neon_rtcd" = "xno"], [
CFLAGS=$SAVED_CFLAGS
AC_DEFINE(WEBP_HAVE_NEON, [1], [Set to 1 if NEON is supported])
break
],[
AC_MSG_WARN(m4_normalize([NEON runtime cpu-detection is
unavailable for ${host_os%%-*}. Force
with CFLAGS=-mfpu=neon or
--disable-neon-rtcd.]))
enable_neon_rtcd=no
NEON_FLAGS=""
])
],[
CFLAGS=$SAVED_CFLAGS
AC_DEFINE(WEBP_HAVE_NEON, [1], [Set to 1 if NEON is supported])
break
])])
CFLAGS=$SAVED_CFLAGS
done
AS_IF([test -n "$NEON_FLAGS"], [
# If NEON is available and rtcd is disabled apply NEON_FLAGS globally.
AS_IF([test "x$enable_neon_rtcd" = "xno"], [
AM_CFLAGS="$AM_CFLAGS $NEON_FLAGS"
NEON_FLAGS=""],
[AC_DEFINE(WEBP_HAVE_NEON_RTCD, [1],
[Set to 1 if runtime detection of NEON is enabled])])])
case "$host_os" in
*android*) AC_CHECK_HEADERS([cpu-features.h]) ;;
esac
;;
aarch64*|arm64*)
AC_DEFINE(WEBP_HAVE_NEON, [1], [Set to 1 if NEON is supported])
;;
esac
AC_SUBST([NEON_FLAGS])])
dnl === CLEAR_LIBVARS([var_pfx])
dnl === Clears <var_pfx>_{INCLUDES,LIBS}.
AC_DEFUN([CLEAR_LIBVARS], [$1_INCLUDES=""; $1_LIBS=""])
dnl === WITHLIB_OPTION([opt_pfx], [outvar_pfx])
dnl === Defines --with-<opt_pfx>{include,lib}dir options which set
dnl === the variables <outvar_pfx>_{INCLUDES,LIBS}.
AC_DEFUN([WITHLIB_OPTION],
[AC_ARG_WITH([$1includedir],
AS_HELP_STRING([--with-$1includedir=DIR],
[use $2 includes from DIR]),
$2_INCLUDES="-I$withval")
AC_ARG_WITH([$1libdir],
AS_HELP_STRING([--with-$1libdir=DIR],
[use $2 libraries from DIR]),
[$2_LIBS="-L$withval"])])
dnl === LIBCHECK_PROLOGUE([var_pfx])
dnl === Caches the current values of CPPFLAGS/LIBS in SAVED_* then
dnl === prepends the current values with <var_pfx>_{INCLUDES,LIBS}.
AC_DEFUN([LIBCHECK_PROLOGUE],
[SAVED_CPPFLAGS=$CPPFLAGS
SAVED_LIBS=$LIBS
CPPFLAGS="$$1_INCLUDES $CPPFLAGS"
LIBS="$$1_LIBS $LIBS"])
dnl === LIBCHECK_EPILOGUE([var_pfx])
dnl === Restores the values of CPPFLAGS/LIBS from SAVED_* and exports
dnl === <var_pfx>_{INCLUDES,LIBS} with AC_SUBST.
AC_DEFUN([LIBCHECK_EPILOGUE],
[AC_SUBST($1_LIBS)
AC_SUBST($1_INCLUDES)
CPPFLAGS=$SAVED_CPPFLAGS
LIBS=$SAVED_LIBS])
dnl === Check for gcc builtins
dnl === CHECK_FOR_BUILTIN([builtin], [param], [define])
dnl === links a C AC_LANG_PROGRAM, with <builtin>(<param>)
dnl === AC_DEFINE'ing <define> if successful.
AC_DEFUN([CHECK_FOR_BUILTIN],
[AC_LANG_PUSH([C])
AC_MSG_CHECKING([for $1])
AC_LINK_IFELSE([AC_LANG_PROGRAM([], [(void)$1($2)])],
[AC_MSG_RESULT([yes])
AC_DEFINE([$3], [1],
[Set to 1 if $1 is available])],
[AC_MSG_RESULT([no])]),
AC_LANG_POP])
dnl AC_CHECK_FUNC doesn't work with builtin's.
CHECK_FOR_BUILTIN([__builtin_bswap16], [1u << 15], [HAVE_BUILTIN_BSWAP16])
CHECK_FOR_BUILTIN([__builtin_bswap32], [1u << 31], [HAVE_BUILTIN_BSWAP32])
CHECK_FOR_BUILTIN([__builtin_bswap64], [1ull << 63], [HAVE_BUILTIN_BSWAP64])
dnl === Check for pthread support
AC_ARG_ENABLE([threading],
AS_HELP_STRING([--disable-threading],
[Disable detection of thread support]),,
[enable_threading=yes])
if test "$enable_threading" = "yes"; then
AC_MSG_NOTICE([checking for threading support...])
AX_PTHREAD([AC_DEFINE([WEBP_USE_THREAD], [1],
[Undefine this to disable thread support.])
LIBS="$PTHREAD_LIBS $LIBS"
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
CC="$PTHREAD_CC"
],
[AC_CHECK_FUNC([_beginthreadex],
[AC_DEFINE([WEBP_USE_THREAD], [1],
[Undefine this to disable thread
support.])],
[enable_threading=no])])
fi
AC_MSG_NOTICE([checking if threading is enabled... ${enable_threading-no}])
dnl === check for OpenGL/GLUT support ===
AC_ARG_ENABLE([gl], AS_HELP_STRING([--disable-gl],
[Disable detection of OpenGL support
@<:@default=auto@:>@]))
AS_IF([test "x$enable_gl" != "xno"], [
CLEAR_LIBVARS([GL])
WITHLIB_OPTION([gl], [GL])
LIBCHECK_PROLOGUE([GL])
glut_cflags="none"
glut_ldflags="none"
case $host_os in
darwin*)
# Special case for OSX builds. Append these to give the user a chance to
# override with --with-gl*
glut_cflags="$glut_cflags|-framework GLUT -framework OpenGL"
glut_ldflags="$glut_ldflags|-framework GLUT -framework OpenGL"
# quiet deprecation warnings for glut
TEST_AND_ADD_CFLAGS([AM_CFLAGS], [-Wno-deprecated-declarations])
;;
esac
GLUT_SAVED_CPPFLAGS="$CPPFLAGS"
SAVED_IFS="$IFS"
IFS="|"
for flag in $glut_cflags; do
# restore IFS immediately as the autoconf macros may need the default.
IFS="$SAVED_IFS"
unset ac_cv_header_GL_glut_h
unset ac_cv_header_OpenGL_glut_h
case $flag in
none) ;;
*) CPPFLAGS="$flag $CPPFLAGS";;
esac
AC_CHECK_HEADERS([GL/glut.h GLUT/glut.h OpenGL/glut.h],
[glut_headers=yes;
test "$flag" = "none" || GL_INCLUDES="$CPPFLAGS";
break])
CPPFLAGS="$GLUT_SAVED_CPPFLAGS"
test "$glut_headers" = "yes" && break
done
IFS="$SAVED_IFS"
if test "$glut_headers" = "yes"; then
AC_LANG_PUSH([C])
GLUT_SAVED_LDFLAGS="$LDFLAGS"
SAVED_IFS="$IFS"
IFS="|"
for flag in $glut_ldflags; do
# restore IFS immediately as the autoconf macros may need the default.
IFS="$SAVED_IFS"
unset ac_cv_search_glBegin
case $flag in
none) ;;
*) LDFLAGS="$flag $LDFLAGS";;
esac
# find libGL
GL_SAVED_LIBS="$LIBS"
AC_SEARCH_LIBS([glBegin], [GL OpenGL opengl32])
LIBS="$GL_SAVED_LIBS"
# A direct link to libGL may not be necessary on e.g., linux.
GLUT_SAVED_LIBS="$LIBS"
for lib in "" "-lglut" "-lglut $ac_cv_search_glBegin"; do
LIBS="$lib"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([
#ifdef __cplusplus
# define EXTERN_C extern "C"
#else
# define EXTERN_C
#endif
EXTERN_C char glOrtho();
EXTERN_C char glutMainLoop();
],[
glOrtho();
glutMainLoop();
])
],
AC_DEFINE(WEBP_HAVE_GL, [1],
[Set to 1 if OpenGL is supported])
[glut_support=yes], []
)
if test "$glut_support" = "yes"; then
GL_LIBS="$LDFLAGS $lib"
break
fi
done
LIBS="$GLUT_SAVED_LIBS"
LDFLAGS="$GLUT_SAVED_LDFLAGS"
test "$glut_support" = "yes" && break
done
IFS="$SAVED_IFS"
AC_LANG_POP
fi
LIBCHECK_EPILOGUE([GL])
if test "$glut_support" = "yes" -a "$enable_libwebpdemux" = "yes"; then
build_vwebp=yes
else
AC_MSG_NOTICE(
m4_normalize([Not building vwebp.
OpenGL libraries and --enable-libwebpdemux are required.]))
fi
])
AM_CONDITIONAL([BUILD_VWEBP], [test "$build_vwebp" = "yes"])
dnl === check for SDL support ===
AC_ARG_ENABLE([sdl],
AS_HELP_STRING([--disable-sdl],
[Disable detection of SDL support
@<:@default=auto@:>@]))
AS_IF([test "x$enable_sdl" != "xno"], [
CLEAR_LIBVARS([SDL])
AC_PATH_PROGS([LIBSDL_CONFIG], [sdl-config])
if test -n "$LIBSDL_CONFIG"; then
SDL_INCLUDES=`$LIBSDL_CONFIG --cflags`
SDL_LIBS="`$LIBSDL_CONFIG --libs`"
fi
WITHLIB_OPTION([sdl], [SDL])
sdl_header="no"
LIBCHECK_PROLOGUE([SDL])
AC_CHECK_HEADER([SDL/SDL.h], [sdl_header="SDL/SDL.h"],
[AC_CHECK_HEADER([SDL.h], [sdl_header="SDL.h"],
[AC_MSG_WARN(SDL library not available - no sdl.h)])])
if test x"$sdl_header" != "xno"; then
AC_LANG_PUSH(C)
SDL_SAVED_LIBS="$LIBS"
for lib in "" "-lSDL" "-lSDLmain -lSDL"; do
LIBS="$SDL_SAVED_LIBS $lib"
# Perform a full link to ensure SDL_main is resolved if needed.
AC_LINK_IFELSE(
[AC_LANG_SOURCE([
#include <$sdl_header>
int main(int argc, char** argv) {
SDL_Init(0);
return 0;
}])],
[SDL_LIBS="$LDFLAGS $LIBS"
SDL_INCLUDES="$SDL_INCLUDES -DWEBP_HAVE_SDL"
AC_DEFINE(WEBP_HAVE_SDL, [1],
[Set to 1 if SDL library is installed])
sdl_support=yes]
)
if test x"$sdl_support" = "xyes"; then
break
fi
done
# LIBS is restored by LIBCHECK_EPILOGUE
AC_LANG_POP
if test x"$sdl_header" = "xSDL.h"; then
SDL_INCLUDES="$SDL_INCLUDES -DWEBP_HAVE_JUST_SDL_H"
fi
fi
LIBCHECK_EPILOGUE([SDL])
if test x"$sdl_support" = "xyes"; then
build_vwebp_sdl=yes
else
AC_MSG_NOTICE([Not building vwebp-sdl. SDL library is required.])
fi
])
AM_CONDITIONAL([BUILD_VWEBP_SDL], [test "$build_vwebp_sdl" = "yes"])
dnl === check for PNG support ===
AC_ARG_ENABLE([png], AS_HELP_STRING([--disable-png],
[Disable detection of PNG format support
@<:@default=auto@:>@]))
AS_IF([test "x$enable_png" != "xno"], [
CLEAR_LIBVARS([PNG])
AC_PATH_PROGS([LIBPNG_CONFIG],
[libpng-config libpng16-config libpng15-config libpng14-config \
libpng12-config])
if test -n "$LIBPNG_CONFIG"; then
PNG_INCLUDES=`$LIBPNG_CONFIG --cflags`
PNG_LIBS="`$LIBPNG_CONFIG --ldflags`"
fi
WITHLIB_OPTION([png], [PNG])
LIBCHECK_PROLOGUE([PNG])
AC_CHECK_HEADER(png.h,
AC_SEARCH_LIBS(png_get_libpng_ver, [png],
[test "$ac_cv_search_png_get_libpng_ver" = "none required" \
|| PNG_LIBS="$PNG_LIBS $ac_cv_search_png_get_libpng_ver"
PNG_INCLUDES="$PNG_INCLUDES -DWEBP_HAVE_PNG"
AC_DEFINE(WEBP_HAVE_PNG, [1],
[Set to 1 if PNG library is installed])
png_support=yes
],
[AC_MSG_WARN(Optional png library not found)
PNG_LIBS=""
PNG_INCLUDES=""
],
[$MATH_LIBS]),
[AC_MSG_WARN(png library not available - no png.h)
PNG_LIBS=""
PNG_INCLUDES=""
],
)
LIBCHECK_EPILOGUE([PNG])
])
dnl === check for JPEG support ===
AC_ARG_ENABLE([jpeg],
AS_HELP_STRING([--disable-jpeg],
[Disable detection of JPEG format support
@<:@default=auto@:>@]))
AS_IF([test "x$enable_jpeg" != "xno"], [
CLEAR_LIBVARS([JPEG])
WITHLIB_OPTION([jpeg], [JPEG])
LIBCHECK_PROLOGUE([JPEG])
AC_CHECK_HEADER(jpeglib.h,
AC_CHECK_LIB(jpeg, jpeg_set_defaults,
[JPEG_LIBS="$JPEG_LIBS -ljpeg"
JPEG_INCLUDES="$JPEG_INCLUDES -DWEBP_HAVE_JPEG"
AC_DEFINE(WEBP_HAVE_JPEG, [1],
[Set to 1 if JPEG library is installed])
jpeg_support=yes
],
AC_MSG_WARN(Optional jpeg library not found),
[$MATH_LIBS]),
AC_MSG_WARN(jpeg library not available - no jpeglib.h)
)
LIBCHECK_EPILOGUE([JPEG])
])
dnl === check for TIFF support ===
AC_ARG_ENABLE([tiff],
AS_HELP_STRING([--disable-tiff],
[Disable detection of TIFF format support
@<:@default=auto@:>@]))
AS_IF([test "x$enable_tiff" != "xno"], [
CLEAR_LIBVARS([TIFF])
WITHLIB_OPTION([tiff], [TIFF])
LIBCHECK_PROLOGUE([TIFF])
AC_CHECK_HEADER(tiffio.h,
AC_CHECK_LIB(tiff, TIFFGetVersion,
[TIFF_LIBS="$TIFF_LIBS -ltiff"
TIFF_INCLUDES="$TIFF_INCLUDES -DWEBP_HAVE_TIFF"
AC_DEFINE(WEBP_HAVE_TIFF, [1],
[Set to 1 if TIFF library is installed])
tiff_support=yes
],
AC_MSG_WARN(Optional tiff library not found),
[$MATH_LIBS]),
AC_MSG_WARN(tiff library not available - no tiffio.h)
)
LIBCHECK_EPILOGUE([TIFF])
])
dnl === check for GIF support ===
AC_ARG_ENABLE([gif], AS_HELP_STRING([--disable-gif],
[Disable detection of GIF format support
@<:@default=auto@:>@]))
AS_IF([test "x$enable_gif" != "xno"], [
CLEAR_LIBVARS([GIF])
WITHLIB_OPTION([gif], [GIF])
LIBCHECK_PROLOGUE([GIF])
AC_CHECK_HEADER(gif_lib.h,
AC_CHECK_LIB([gif], [DGifOpenFileHandle],
[GIF_LIBS="$GIF_LIBS -lgif"
AC_DEFINE(WEBP_HAVE_GIF, [1],
[Set to 1 if GIF library is installed])
gif_support=yes
],
AC_MSG_WARN(Optional gif library not found),
[$MATH_LIBS]),
AC_MSG_WARN(gif library not available - no gif_lib.h)
)
LIBCHECK_EPILOGUE([GIF])
if test "$gif_support" = "yes" -a \
"$enable_libwebpdemux" = "yes"; then
build_anim_diff=yes
else
AC_MSG_NOTICE(
[Not building anim_diff. libgif and --enable-libwebpdemux are required.])
fi
if test "$gif_support" = "yes" -a \
"$enable_libwebpmux" = "yes"; then
build_gif2webp=yes
else
AC_MSG_NOTICE(
[Not building gif2webp. libgif and --enable-libwebpmux are required.])
fi
])
AM_CONDITIONAL([BUILD_ANIMDIFF], [test "${build_anim_diff}" = "yes"])
AM_CONDITIONAL([BUILD_GIF2WEBP], [test "${build_gif2webp}" = "yes"])
if test "$enable_libwebpdemux" = "yes" -a "$enable_libwebpmux" = "yes"; then
build_img2webp=yes
else
AC_MSG_NOTICE(
m4_normalize([Not building img2webp.
--enable-libwebpdemux & --enable-libwebpmux are required.]))
fi
AM_CONDITIONAL([BUILD_IMG2WEBP], [test "${build_img2webp}" = "yes"])
if test "$enable_libwebpmux" = "yes"; then
build_webpinfo=yes
else
AC_MSG_NOTICE([Not building webpinfo. --enable-libwebpdemux is required.])
fi
AM_CONDITIONAL([BUILD_WEBPINFO], [test "${build_webpinfo}" = "yes"])
dnl === check for WIC support ===
AC_ARG_ENABLE([wic],
AS_HELP_STRING([--disable-wic],
[Disable Windows Imaging Component (WIC) detection.
@<:@default=auto@:>@]),,
[enable_wic=yes])
case $host_os in
mingw*)
if test "$enable_wic" = "yes"; then
AC_CHECK_HEADERS([wincodec.h shlwapi.h windows.h])
if test "$ac_cv_header_wincodec_h" = "yes"; then
AC_MSG_CHECKING(for Windows Imaging Component support)
SAVED_LIBS=$LIBS
LIBS="-lshlwapi -lole32 $LIBS"
# match include structure from [cd]webp.c
wic_headers="
#define INITGUID
#define CINTERFACE
#define COBJMACROS
#define _WIN32_IE 0x500
#include <shlwapi.h>
#include <windows.h>
#include <wincodec.h>
"
# test for functions from each lib and the GUID is created properly
wic_main="
int main(void) {
CLSID_WICImagingFactory;
CoInitialize(NULL);
SHCreateStreamOnFile(NULL, 0, NULL);
return 0;
}
"
AC_LANG_PUSH(C)
AC_LINK_IFELSE(
[AC_LANG_SOURCE([
$wic_headers
$wic_main])],
[wic_support=yes],
[wic_support=no]
)
AC_LANG_POP
test "$wic_support" = "yes" || LIBS=$SAVED_LIBS
AC_MSG_RESULT(${wic_support-no})
fi
fi
esac
dnl === If --enable-swap-16bit-csp is defined, add -DWEBP_SWAP_16BIT_CSP=1
USE_SWAP_16BIT_CSP=""
AC_MSG_CHECKING(if --enable-swap-16bit-csp option is specified)
AC_ARG_ENABLE([swap-16bit-csp],
AS_HELP_STRING([--enable-swap-16bit-csp],
[Enable byte swap for 16 bit colorspaces]))
if test "$enable_swap_16bit_csp" = "yes"; then
USE_SWAP_16BIT_CSP="-DWEBP_SWAP_16BIT_CSP=1"
fi
AC_MSG_RESULT(${enable_swap_16bit_csp-no})
AC_SUBST(USE_SWAP_16BIT_CSP)
dnl === If --disable-near-lossless is defined, add -DWEBP_NEAR_LOSSLESS=0
AC_DEFINE(WEBP_NEAR_LOSSLESS, [1], [Enable near lossless encoding])
AC_MSG_CHECKING(if --disable-near-lossless option is specified)
AC_ARG_ENABLE([near_lossless],
AS_HELP_STRING([--disable-near-lossless],
[Disable near lossless encoding]),
[], [enable_near_lossless=yes])
if test "$enable_near_lossless" = "no"; then
AC_DEFINE(WEBP_NEAR_LOSSLESS, [0], [Enable near lossless encoding])
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
dnl =========================
dnl Add an empty webp_libname_prefix variable for use in *.pc.in.
AC_SUBST([webp_libname_prefix])
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_HEADERS([src/webp/config.h])
AC_CONFIG_FILES([Makefile src/Makefile man/Makefile \
examples/Makefile extras/Makefile imageio/Makefile \
sharpyuv/Makefile sharpyuv/libsharpyuv.pc \
src/dec/Makefile src/enc/Makefile src/dsp/Makefile \
src/demux/Makefile src/mux/Makefile \
src/utils/Makefile \
src/libwebp.pc src/libwebpdecoder.pc \
src/demux/libwebpdemux.pc src/mux/libwebpmux.pc])
AC_OUTPUT
AC_MSG_NOTICE([
WebP Configuration Summary
--------------------------
Shared libraries: ${enable_shared}
Static libraries: ${enable_static}
Threading support: ${enable_threading-no}
libwebp: yes
libwebpdecoder: ${enable_libwebpdecoder-no}
libwebpdemux: ${enable_libwebpdemux-no}
libwebpmux: ${enable_libwebpmux-no}
libwebpextras: ${enable_libwebpextras-no}
Tools:
cwebp : ${enable_libwebpdemux-no}
Input format support
====================
JPEG : ${jpeg_support-no}
PNG : ${png_support-no}
TIFF : ${tiff_support-no}
WIC : ${wic_support-no}
dwebp : ${enable_libwebpdemux-no}
Output format support
=====================
PNG : ${png_support-no}
WIC : ${wic_support-no}
GIF support : ${gif_support-no}
anim_diff : ${build_anim_diff-no}
gif2webp : ${build_gif2webp-no}
img2webp : ${build_img2webp-no}
webpmux : ${enable_libwebpmux-no}
vwebp : ${build_vwebp-no}
webpinfo : ${build_webpinfo-no}
SDL support : ${sdl_support-no}
vwebp_sdl : ${build_vwebp_sdl-no}
])

13
external/libwebp/libwebp/doc/TODO vendored
View File

@ -1,13 +0,0 @@
<louquillio@google.com>, 20111004
* Determine that normative RFC 2119 terms (MUST, SHOULD, MAY, etc.) are
truly intended in all cases where capitalized.
* Several passages could be made clearer.
* Overall edit for scope. Portions are phrased as an introduction to
the 0.1.3 RIFF container additions, rather than a holistic guide to
WebP.
* To wit, suggest s/[spec|specification]/guide/g . "Spec" can imply a
standards track; in any case it's too formal for a work in progress.

385
external/libwebp/libwebp/doc/api.md vendored
View File

@ -1,385 +0,0 @@
# WebP APIs
## Encoding API
The main encoding functions are available in the header src/webp/encode.h
The ready-to-use ones are:
```c
size_t WebPEncodeRGB(const uint8_t* rgb, int width, int height, int stride,
float quality_factor, uint8_t** output);
size_t WebPEncodeBGR(const uint8_t* bgr, int width, int height, int stride,
float quality_factor, uint8_t** output);
size_t WebPEncodeRGBA(const uint8_t* rgba, int width, int height, int stride,
float quality_factor, uint8_t** output);
size_t WebPEncodeBGRA(const uint8_t* bgra, int width, int height, int stride,
float quality_factor, uint8_t** output);
```
They will convert raw RGB samples to a WebP data. The only control supplied is
the quality factor.
There are some variants for using the lossless format:
```c
size_t WebPEncodeLosslessRGB(const uint8_t* rgb, int width, int height,
int stride, uint8_t** output);
size_t WebPEncodeLosslessBGR(const uint8_t* bgr, int width, int height,
int stride, uint8_t** output);
size_t WebPEncodeLosslessRGBA(const uint8_t* rgba, int width, int height,
int stride, uint8_t** output);
size_t WebPEncodeLosslessBGRA(const uint8_t* bgra, int width, int height,
int stride, uint8_t** output);
```
Of course in this case, no quality factor is needed since the compression occurs
without loss of the input values, at the expense of larger output sizes.
### Advanced encoding API
A more advanced API is based on the WebPConfig and WebPPicture structures.
WebPConfig contains the encoding settings and is not tied to a particular
picture. WebPPicture contains input data, on which some WebPConfig will be used
for compression. The encoding flow looks like:
```c
#include <webp/encode.h>
// Setup a config, starting form a preset and tuning some additional
// parameters
WebPConfig config;
if (!WebPConfigPreset(&config, WEBP_PRESET_PHOTO, quality_factor)) {
return 0; // version error
}
// ... additional tuning
config.sns_strength = 90;
config.filter_sharpness = 6;
config_error = WebPValidateConfig(&config); // not mandatory, but useful
// Setup the input data
WebPPicture pic;
if (!WebPPictureInit(&pic)) {
return 0; // version error
}
pic.width = width;
pic.height = height;
// allocated picture of dimension width x height
if (!WebPPictureAlloc(&pic)) {
return 0; // memory error
}
// at this point, 'pic' has been initialized as a container,
// and can receive the Y/U/V samples.
// Alternatively, one could use ready-made import functions like
// WebPPictureImportRGB(), which will take care of memory allocation.
// In any case, past this point, one will have to call
// WebPPictureFree(&pic) to reclaim memory.
// Set up a byte-output write method. WebPMemoryWriter, for instance.
WebPMemoryWriter wrt;
WebPMemoryWriterInit(&wrt); // initialize 'wrt'
pic.writer = MyFileWriter;
pic.custom_ptr = my_opaque_structure_to_make_MyFileWriter_work;
// Compress!
int ok = WebPEncode(&config, &pic); // ok = 0 => error occurred!
WebPPictureFree(&pic); // must be called independently of the 'ok' result.
// output data should have been handled by the writer at that point.
// -> compressed data is the memory buffer described by wrt.mem / wrt.size
// deallocate the memory used by compressed data
WebPMemoryWriterClear(&wrt);
```
## Decoding API
This is mainly just one function to call:
```c
#include "webp/decode.h"
uint8_t* WebPDecodeRGB(const uint8_t* data, size_t data_size,
int* width, int* height);
```
Please have a look at the file src/webp/decode.h for the details. There are
variants for decoding in BGR/RGBA/ARGB/BGRA order, along with decoding to raw
Y'CbCr samples. One can also decode the image directly into a pre-allocated
buffer.
To detect a WebP file and gather the picture's dimensions, the function:
```c
int WebPGetInfo(const uint8_t* data, size_t data_size,
int* width, int* height);
```
is supplied. No decoding is involved when using it.
### Incremental decoding API
In the case when data is being progressively transmitted, pictures can still be
incrementally decoded using a slightly more complicated API. Decoder state is
stored into an instance of the WebPIDecoder object. This object can be created
with the purpose of decoding either RGB or Y'CbCr samples. For instance:
```c
WebPDecBuffer buffer;
WebPInitDecBuffer(&buffer);
buffer.colorspace = MODE_BGR;
...
WebPIDecoder* idec = WebPINewDecoder(&buffer);
```
As data is made progressively available, this incremental-decoder object can be
used to decode the picture further. There are two (mutually exclusive) ways to
pass freshly arrived data:
either by appending the fresh bytes:
```c
WebPIAppend(idec, fresh_data, size_of_fresh_data);
```
or by just mentioning the new size of the transmitted data:
```c
WebPIUpdate(idec, buffer, size_of_transmitted_buffer);
```
Note that 'buffer' can be modified between each call to WebPIUpdate, in
particular when the buffer is resized to accommodate larger data.
These functions will return the decoding status: either VP8_STATUS_SUSPENDED if
decoding is not finished yet or VP8_STATUS_OK when decoding is done. Any other
status is an error condition.
The 'idec' object must always be released (even upon an error condition) by
calling: WebPDelete(idec).
To retrieve partially decoded picture samples, one must use the corresponding
method: WebPIDecGetRGB or WebPIDecGetYUVA. It will return the last displayable
pixel row.
Lastly, note that decoding can also be performed into a pre-allocated pixel
buffer. This buffer must be passed when creating a WebPIDecoder, calling
WebPINewRGB() or WebPINewYUVA().
Please have a look at the src/webp/decode.h header for further details.
### Advanced Decoding API
WebP decoding supports an advanced API which provides on-the-fly cropping and
rescaling, something of great usefulness on memory-constrained environments like
mobile phones. Basically, the memory usage will scale with the output's size,
not the input's, when one only needs a quick preview or a zoomed in portion of
an otherwise too-large picture. Some CPU can be saved too, incidentally.
```c
// A) Init a configuration object
WebPDecoderConfig config;
CHECK(WebPInitDecoderConfig(&config));
// B) optional: retrieve the bitstream's features.
CHECK(WebPGetFeatures(data, data_size, &config.input) == VP8_STATUS_OK);
// C) Adjust 'config' options, if needed
config.options.no_fancy_upsampling = 1;
config.options.use_scaling = 1;
config.options.scaled_width = scaledWidth();
config.options.scaled_height = scaledHeight();
// etc.
// D) Specify 'config' output options for specifying output colorspace.
// Optionally the external image decode buffer can also be specified.
config.output.colorspace = MODE_BGRA;
// Optionally, the config.output can be pointed to an external buffer as
// well for decoding the image. This externally supplied memory buffer
// should be big enough to store the decoded picture.
config.output.u.RGBA.rgba = (uint8_t*) memory_buffer;
config.output.u.RGBA.stride = scanline_stride;
config.output.u.RGBA.size = total_size_of_the_memory_buffer;
config.output.is_external_memory = 1;
// E) Decode the WebP image. There are two variants w.r.t decoding image.
// The first one (E.1) decodes the full image and the second one (E.2) is
// used to incrementally decode the image using small input buffers.
// Any one of these steps can be used to decode the WebP image.
// E.1) Decode full image.
CHECK(WebPDecode(data, data_size, &config) == VP8_STATUS_OK);
// E.2) Decode image incrementally.
WebPIDecoder* const idec = WebPIDecode(NULL, NULL, &config);
CHECK(idec != NULL);
while (bytes_remaining > 0) {
VP8StatusCode status = WebPIAppend(idec, input, bytes_read);
if (status == VP8_STATUS_OK || status == VP8_STATUS_SUSPENDED) {
bytes_remaining -= bytes_read;
} else {
break;
}
}
WebPIDelete(idec);
// F) Decoded image is now in config.output (and config.output.u.RGBA).
// It can be saved, displayed or otherwise processed.
// G) Reclaim memory allocated in config's object. It's safe to call
// this function even if the memory is external and wasn't allocated
// by WebPDecode().
WebPFreeDecBuffer(&config.output);
```
## WebP Mux
WebPMux is a set of two libraries 'Mux' and 'Demux' for creation, extraction and
manipulation of an extended format WebP file, which can have features like color
profile, metadata and animation. Reference command-line tools `webpmux` and
`vwebp` as well as the WebP container specification
'doc/webp-container-spec.txt' are also provided in this package, see the
[tools documentation](tools.md).
### Mux API
The Mux API contains methods for adding data to and reading data from WebP
files. This API currently supports XMP/EXIF metadata, ICC profile and animation.
Other features may be added in subsequent releases.
Example#1 (pseudo code): Creating a WebPMux object with image data, color
profile and XMP metadata.
```c
int copy_data = 0;
WebPMux* mux = WebPMuxNew();
// ... (Prepare image data).
WebPMuxSetImage(mux, &image, copy_data);
// ... (Prepare ICC profile data).
WebPMuxSetChunk(mux, "ICCP", &icc_profile, copy_data);
// ... (Prepare XMP metadata).
WebPMuxSetChunk(mux, "XMP ", &xmp, copy_data);
// Get data from mux in WebP RIFF format.
WebPMuxAssemble(mux, &output_data);
WebPMuxDelete(mux);
// ... (Consume output_data; e.g. write output_data.bytes to file).
WebPDataClear(&output_data);
```
Example#2 (pseudo code): Get image and color profile data from a WebP file.
```c
int copy_data = 0;
// ... (Read data from file).
WebPMux* mux = WebPMuxCreate(&data, copy_data);
WebPMuxGetFrame(mux, 1, &image);
// ... (Consume image; e.g. call WebPDecode() to decode the data).
WebPMuxGetChunk(mux, "ICCP", &icc_profile);
// ... (Consume icc_profile).
WebPMuxDelete(mux);
free(data);
```
For a detailed Mux API reference, please refer to the header file
(src/webp/mux.h).
### Demux API
The Demux API enables extraction of images and extended format data from WebP
files. This API currently supports reading of XMP/EXIF metadata, ICC profile and
animated images. Other features may be added in subsequent releases.
Code example: Demuxing WebP data to extract all the frames, ICC profile and
EXIF/XMP metadata.
```c
WebPDemuxer* demux = WebPDemux(&webp_data);
uint32_t width = WebPDemuxGetI(demux, WEBP_FF_CANVAS_WIDTH);
uint32_t height = WebPDemuxGetI(demux, WEBP_FF_CANVAS_HEIGHT);
// ... (Get information about the features present in the WebP file).
uint32_t flags = WebPDemuxGetI(demux, WEBP_FF_FORMAT_FLAGS);
// ... (Iterate over all frames).
WebPIterator iter;
if (WebPDemuxGetFrame(demux, 1, &iter)) {
do {
// ... (Consume 'iter'; e.g. Decode 'iter.fragment' with WebPDecode(),
// ... and get other frame properties like width, height, offsets etc.
// ... see 'struct WebPIterator' below for more info).
} while (WebPDemuxNextFrame(&iter));
WebPDemuxReleaseIterator(&iter);
}
// ... (Extract metadata).
WebPChunkIterator chunk_iter;
if (flags & ICCP_FLAG) WebPDemuxGetChunk(demux, "ICCP", 1, &chunk_iter);
// ... (Consume the ICC profile in 'chunk_iter.chunk').
WebPDemuxReleaseChunkIterator(&chunk_iter);
if (flags & EXIF_FLAG) WebPDemuxGetChunk(demux, "EXIF", 1, &chunk_iter);
// ... (Consume the EXIF metadata in 'chunk_iter.chunk').
WebPDemuxReleaseChunkIterator(&chunk_iter);
if (flags & XMP_FLAG) WebPDemuxGetChunk(demux, "XMP ", 1, &chunk_iter);
// ... (Consume the XMP metadata in 'chunk_iter.chunk').
WebPDemuxReleaseChunkIterator(&chunk_iter);
WebPDemuxDelete(demux);
```
For a detailed Demux API reference, please refer to the header file
(src/webp/demux.h).
## AnimEncoder API
The AnimEncoder API can be used to create animated WebP images.
Code example:
```c
WebPAnimEncoderOptions enc_options;
WebPAnimEncoderOptionsInit(&enc_options);
// ... (Tune 'enc_options' as needed).
WebPAnimEncoder* enc = WebPAnimEncoderNew(width, height, &enc_options);
while(<there are more frames>) {
WebPConfig config;
WebPConfigInit(&config);
// ... (Tune 'config' as needed).
WebPAnimEncoderAdd(enc, frame, duration, &config);
}
WebPAnimEncoderAssemble(enc, webp_data);
WebPAnimEncoderDelete(enc);
// ... (Write the 'webp_data' to a file, or re-mux it further).
```
For a detailed AnimEncoder API reference, please refer to the header file
(src/webp/mux.h).
## AnimDecoder API
This AnimDecoder API allows decoding (possibly) animated WebP images.
Code Example:
```c
WebPAnimDecoderOptions dec_options;
WebPAnimDecoderOptionsInit(&dec_options);
// Tune 'dec_options' as needed.
WebPAnimDecoder* dec = WebPAnimDecoderNew(webp_data, &dec_options);
WebPAnimInfo anim_info;
WebPAnimDecoderGetInfo(dec, &anim_info);
for (uint32_t i = 0; i < anim_info.loop_count; ++i) {
while (WebPAnimDecoderHasMoreFrames(dec)) {
uint8_t* buf;
int timestamp;
WebPAnimDecoderGetNext(dec, &buf, &timestamp);
// ... (Render 'buf' based on 'timestamp').
// ... (Do NOT free 'buf', as it is owned by 'dec').
}
WebPAnimDecoderReset(dec);
}
const WebPDemuxer* demuxer = WebPAnimDecoderGetDemuxer(dec);
// ... (Do something using 'demuxer'; e.g. get EXIF/XMP/ICC data).
WebPAnimDecoderDelete(dec);
```
For a detailed AnimDecoder API reference, please refer to the header file
(src/webp/demux.h).

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# Building
## Windows build
By running:
```batch
nmake /f Makefile.vc CFG=release-static RTLIBCFG=static OBJDIR=output
```
the directory `output\release-static\(x64|x86)\bin` will contain the tools
cwebp.exe and dwebp.exe. The directory `output\release-static\(x64|x86)\lib`
will contain the libwebp static library. The target architecture (x86/x64) is
detected by Makefile.vc from the Visual Studio compiler (cl.exe) available in
the system path.
## Unix build using makefile.unix
On platforms with GNU tools installed (gcc and make), running
```shell
make -f makefile.unix
```
will build the binaries examples/cwebp and examples/dwebp, along with the static
library src/libwebp.a. No system-wide installation is supplied, as this is a
simple alternative to the full installation system based on the autoconf tools
(see below). Please refer to makefile.unix for additional details and
customizations.
## Using autoconf tools
Prerequisites: a compiler (e.g., gcc), make, autoconf, automake, libtool.
On a Debian-like system the following should install everything you need for a
minimal build:
```shell
$ sudo apt-get install gcc make autoconf automake libtool
```
When building from git sources, you will need to run autogen.sh to generate the
configure script.
```shell
./configure
make
make install
```
should be all you need to have the following files
```
/usr/local/include/webp/decode.h
/usr/local/include/webp/encode.h
/usr/local/include/webp/types.h
/usr/local/lib/libwebp.*
/usr/local/bin/cwebp
/usr/local/bin/dwebp
```
installed.
Note: A decode-only library, libwebpdecoder, is available using the
`--enable-libwebpdecoder` flag. The encode library is built separately and can
be installed independently using a minor modification in the corresponding
Makefile.am configure files (see comments there). See `./configure --help` for
more options.
## Building for MIPS Linux
MIPS Linux toolchain stable available releases can be found at:
https://community.imgtec.com/developers/mips/tools/codescape-mips-sdk/available-releases/
```shell
# Add toolchain to PATH
export PATH=$PATH:/path/to/toolchain/bin
# 32-bit build for mips32r5 (p5600)
HOST=mips-mti-linux-gnu
MIPS_CFLAGS="-O3 -mips32r5 -mabi=32 -mtune=p5600 -mmsa -mfp64 \
-msched-weight -mload-store-pairs -fPIE"
MIPS_LDFLAGS="-mips32r5 -mabi=32 -mmsa -mfp64 -pie"
# 64-bit build for mips64r6 (i6400)
HOST=mips-img-linux-gnu
MIPS_CFLAGS="-O3 -mips64r6 -mabi=64 -mtune=i6400 -mmsa -mfp64 \
-msched-weight -mload-store-pairs -fPIE"
MIPS_LDFLAGS="-mips64r6 -mabi=64 -mmsa -mfp64 -pie"
./configure --host=${HOST} --build=`config.guess` \
CC="${HOST}-gcc -EL" \
CFLAGS="$MIPS_CFLAGS" \
LDFLAGS="$MIPS_LDFLAGS"
make
make install
```
## CMake
With CMake, you can compile libwebp, cwebp, dwebp, gif2webp, img2webp, webpinfo
and the JS bindings.
Prerequisites: a compiler (e.g., gcc with autotools) and CMake.
On a Debian-like system the following should install everything you need for a
minimal build:
```shell
$ sudo apt-get install build-essential cmake
```
When building from git sources, you will need to run cmake to generate the
makefiles.
```shell
mkdir build && cd build && cmake ../
make
make install
```
If you also want any of the executables, you will need to enable them through
CMake, e.g.:
```shell
cmake -DWEBP_BUILD_CWEBP=ON -DWEBP_BUILD_DWEBP=ON ../
```
or through your favorite interface (like ccmake or cmake-qt-gui).
Use option `-DWEBP_UNICODE=ON` for Unicode support on Windows (with chcp 65001).
Finally, once installed, you can also use WebP in your CMake project by doing:
```cmake
find_package(WebP)
```
which will define the CMake variables WebP_INCLUDE_DIRS and WebP_LIBRARIES.
## Gradle
The support for Gradle is minimal: it only helps you compile libwebp, cwebp and
dwebp and webpmux_example.
Prerequisites: a compiler (e.g., gcc with autotools) and gradle.
On a Debian-like system the following should install everything you need for a
minimal build:
```shell
$ sudo apt-get install build-essential gradle
```
When building from git sources, you will need to run the Gradle wrapper with the
appropriate target, e.g. :
```shell
./gradlew buildAllExecutables
```
## SWIG bindings
To generate language bindings from swig/libwebp.swig at least swig-1.3
(http://www.swig.org) is required.
Currently the following functions are mapped:
Decode:
```
WebPGetDecoderVersion
WebPGetInfo
WebPDecodeRGBA
WebPDecodeARGB
WebPDecodeBGRA
WebPDecodeBGR
WebPDecodeRGB
```
Encode:
```
WebPGetEncoderVersion
WebPEncodeRGBA
WebPEncodeBGRA
WebPEncodeRGB
WebPEncodeBGR
WebPEncodeLosslessRGBA
WebPEncodeLosslessBGRA
WebPEncodeLosslessRGB
WebPEncodeLosslessBGR
```
See also the [swig documentation](../swig/README.md) for more detailed build
instructions and usage examples.
### Java bindings
To build the swig-generated JNI wrapper code at least JDK-1.5 (or equivalent) is
necessary for enum support. The output is intended to be a shared object / DLL
that can be loaded via `System.loadLibrary("webp_jni")`.
### Python bindings
To build the swig-generated Python extension code at least Python 2.6 is
required. Python < 2.6 may build with some minor changes to libwebp.swig or the
generated code, but is untested.
## Javascript decoder
Libwebp can be compiled into a JavaScript decoder using Emscripten and CMake.
See the [corresponding documentation](../README.md)

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# Generate libwebp Container Spec Docs from Text Source
HTML generation requires [kramdown](https://kramdown.gettalong.org/), easily
installed as a [rubygem](https://rubygems.org/). Rubygems installation should
satisfy dependencies automatically.
HTML generation can then be done from the project root:
```shell
$ kramdown doc/webp-container-spec.txt --template doc/template.html > \
doc/output/webp-container-spec.html
```
kramdown can optionally syntax highlight code blocks, using
[CodeRay](https://github.com/rubychan/coderay), a dependency of kramdown that
rubygems will install automatically. The following will apply inline CSS
styling; an external stylesheet is not needed.
```shell
$ kramdown doc/webp-lossless-bitstream-spec.txt --template \
doc/template.html --coderay-css style --coderay-line-numbers ' ' \
--coderay-default-lang c > \
doc/output/webp-lossless-bitstream-spec.html
```
Optimally, use kramdown 0.13.7 or newer if syntax highlighting desired.

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@ -1,94 +0,0 @@
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>WebP Container Specification</title>
<meta name="generator" content="kramdown <%= ::Kramdown::VERSION %>" />
<style type="text/css">
body {
color: #000;
background-color: #fff;
margin: 10%;
font-family: "Liberation Sans", "DejaVu Sans", "Bitstream Vera Sans", Arial, sans-serif;
line-height: 1.4;
}
h2 {
border-bottom: 1px solid #ccc;
padding-bottom: 0;
}
table {
border-collapse: collapse;
}
th, td {
border: 1px solid #999;
padding: .5em .7em;;
}
th {
color: #fff;
background-color: #000;
}
td {
}
hr {
}
code {
color: #000;
background-color: #f7f7f7;
padding: 0 3px;
font-family: "Liberation Mono", "DejaVu Sans Mono", "Bitstream Vera Sans Mono", Consolata, monospace;
}
pre {
background-color: #f7f7f7;
padding: 1em;
border: 1px solid #ccc;
width: 42em;
overflow: auto;
font-family: "Liberation Mono", "DejaVu Sans Mono", "Bitstream Vera Sans Mono", Consolata, monospace;
}
pre code {
background-color: #f7f7f7;
padding: 0; /* Only want padding on inline code, not blocks */
}
pre.terminal {
color: #fff;
background-color: #000;
border: 1px solid #ccc;
max-height: 30em;
}
pre.terminal code {
color: #fff;
background-color: #000;
font-size: smaller;
}
#markdown-toc ul {
list-style-type: disc;
}
ul#markdown-toc {
margin-top: -1em;
visibility: hidden;
-webkit-padding-start: 0;
}
ul#markdown-toc ul {
visibility: visible;
}
ul#markdown-toc ul ul{
visibility: visible;
}
ul#markdown-toc + hr {
margin-bottom: 4em;
}
ol ol { /* Format nested ordered lists */
list-style-type: lower-alpha;
}
dt {
font-style: italic;
font-weight: bold;
}
.caption {
}
</style>
</head>
<body>
<%= @body %>
</body>
</html>

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# WebP tools
## Encoding tool
The examples/ directory contains tools for encoding (cwebp) and decoding (dwebp)
images.
The easiest use should look like:
```shell
cwebp input.png -q 80 -o output.webp
```
which will convert the input file to a WebP file using a quality factor of 80 on
a 0->100 scale (0 being the lowest quality, 100 being the best. Default value is
75).
You might want to try the `-lossless` flag too, which will compress the source
(in RGBA format) without any loss. The `-q` quality parameter will in this case
control the amount of processing time spent trying to make the output file as
small as possible.
A longer list of options is available using the `-longhelp` command line flag:
```shell
> cwebp -longhelp
Usage:
cwebp [-preset <...>] [options] in_file [-o out_file]
```
If input size (-s) for an image is not specified, it is assumed to be a PNG,
JPEG, TIFF or WebP file. Note: Animated PNG and WebP files are not supported.
Options:
```
-h / -help ............. short help
-H / -longhelp ......... long help
-q <float> ............. quality factor (0:small..100:big), default=75
-alpha_q <int> ......... transparency-compression quality (0..100),
default=100
-preset <string> ....... preset setting, one of:
default, photo, picture,
drawing, icon, text
-preset must come first, as it overwrites other parameters
-z <int> ............... activates lossless preset with given
level in [0:fast, ..., 9:slowest]
-m <int> ............... compression method (0=fast, 6=slowest), default=4
-segments <int> ........ number of segments to use (1..4), default=4
-size <int> ............ target size (in bytes)
-psnr <float> .......... target PSNR (in dB. typically: 42)
-s <int> <int> ......... input size (width x height) for YUV
-sns <int> ............. spatial noise shaping (0:off, 100:max), default=50
-f <int> ............... filter strength (0=off..100), default=60
-sharpness <int> ....... filter sharpness (0:most .. 7:least sharp), default=0
-strong ................ use strong filter instead of simple (default)
-nostrong .............. use simple filter instead of strong
-sharp_yuv ............. use sharper (and slower) RGB->YUV conversion
-partition_limit <int> . limit quality to fit the 512k limit on
the first partition (0=no degradation ... 100=full)
-pass <int> ............ analysis pass number (1..10)
-qrange <min> <max> .... specifies the permissible quality range
(default: 0 100)
-crop <x> <y> <w> <h> .. crop picture with the given rectangle
-resize <w> <h> ........ resize picture (*after* any cropping)
-mt .................... use multi-threading if available
-low_memory ............ reduce memory usage (slower encoding)
-map <int> ............. print map of extra info
-print_psnr ............ prints averaged PSNR distortion
-print_ssim ............ prints averaged SSIM distortion
-print_lsim ............ prints local-similarity distortion
-d <file.pgm> .......... dump the compressed output (PGM file)
-alpha_method <int> .... transparency-compression method (0..1), default=1
-alpha_filter <string> . predictive filtering for alpha plane,
one of: none, fast (default) or best
-exact ................. preserve RGB values in transparent area, default=off
-blend_alpha <hex> ..... blend colors against background color
expressed as RGB values written in
hexadecimal, e.g. 0xc0e0d0 for red=0xc0
green=0xe0 and blue=0xd0
-noalpha ............... discard any transparency information
-lossless .............. encode image losslessly, default=off
-near_lossless <int> ... use near-lossless image preprocessing
(0..100=off), default=100
-hint <string> ......... specify image characteristics hint,
one of: photo, picture or graph
-metadata <string> ..... comma separated list of metadata to
copy from the input to the output if present.
Valid values: all, none (default), exif, icc, xmp
-short ................. condense printed message
-quiet ................. don't print anything
-version ............... print version number and exit
-noasm ................. disable all assembly optimizations
-v ..................... verbose, e.g. print encoding/decoding times
-progress .............. report encoding progress
```
Experimental Options:
```
-jpeg_like ............. roughly match expected JPEG size
-af .................... auto-adjust filter strength
-pre <int> ............. pre-processing filter
```
The main options you might want to try in order to further tune the visual
quality are:
-preset -sns -f -m
Namely:
* `preset` will set up a default encoding configuration targeting a particular
type of input. It should appear first in the list of options, so that
subsequent options can take effect on top of this preset. Default value is
'default'.
* `sns` will progressively turn on (when going from 0 to 100) some additional
visual optimizations (like: segmentation map re-enforcement). This option
will balance the bit allocation differently. It tries to take bits from the
"easy" parts of the picture and use them in the "difficult" ones instead.
Usually, raising the sns value (at fixed -q value) leads to larger files,
but with better quality. Typical value is around '75'.
* `f` option directly links to the filtering strength used by the codec's
in-loop processing. The higher the value, the smoother the highly-compressed
area will look. This is particularly useful when aiming at very small files.
Typical values are around 20-30. Note that using the option
-strong/-nostrong will change the type of filtering. Use "-f 0" to turn
filtering off.
* `m` controls the trade-off between encoding speed and quality. Default is 4.
You can try -m 5 or -m 6 to explore more (time-consuming) encoding
possibilities. A lower value will result in faster encoding at the expense
of quality.
## Decoding tool
There is a decoding sample in examples/dwebp.c which will take a .webp file and
decode it to a PNG image file (amongst other formats). This is simply to
demonstrate the use of the API. You can verify the file test.webp decodes to
exactly the same as test_ref.ppm by using:
```shell
cd examples
./dwebp test.webp -ppm -o test.ppm
diff test.ppm test_ref.ppm
```
The full list of options is available using -h:
```shell
> dwebp -h
Usage: dwebp in_file [options] [-o out_file]
```
Decodes the WebP image file to PNG format [Default]. Note: Animated WebP files
are not supported.
Use following options to convert into alternate image formats:
```
-pam ......... save the raw RGBA samples as a color PAM
-ppm ......... save the raw RGB samples as a color PPM
-bmp ......... save as uncompressed BMP format
-tiff ........ save as uncompressed TIFF format
-pgm ......... save the raw YUV samples as a grayscale PGM
file with IMC4 layout
-yuv ......... save the raw YUV samples in flat layout
```
Other options are:
```
-version ..... print version number and exit
-nofancy ..... don't use the fancy YUV420 upscaler
-nofilter .... disable in-loop filtering
-nodither .... disable dithering
-dither <d> .. dithering strength (in 0..100)
-alpha_dither use alpha-plane dithering if needed
-mt .......... use multi-threading
-crop <x> <y> <w> <h> ... crop output with the given rectangle
-resize <w> <h> ......... resize output (*after* any cropping)
-flip ........ flip the output vertically
-alpha ....... only save the alpha plane
-incremental . use incremental decoding (useful for tests)
-h ........... this help message
-v ........... verbose (e.g. print encoding/decoding times)
-quiet ....... quiet mode, don't print anything
-noasm ....... disable all assembly optimizations
```
## WebP file analysis tool
`webpinfo` can be used to print out the chunk level structure and bitstream
header information of WebP files. It can also check if the files are of valid
WebP format.
Usage:
```shell
webpinfo [options] in_files
```
Note: there could be multiple input files; options must come before input files.
Options:
```
-version ........... Print version number and exit.
-quiet ............. Do not show chunk parsing information.
-diag .............. Show parsing error diagnosis.
-summary ........... Show chunk stats summary.
-bitstream_info .... Parse bitstream header.
```
## Visualization tool
There's a little self-serve visualization tool called 'vwebp' under the
examples/ directory. It uses OpenGL to open a simple drawing window and show a
decoded WebP file. It's not yet integrated in the automake build system, but you
can try to manually compile it using the recommendations below.
Usage:
```shell
vwebp in_file [options]
```
Decodes the WebP image file and visualize it using OpenGL
Options are:
```
-version ..... print version number and exit
-noicc ....... don't use the icc profile if present
-nofancy ..... don't use the fancy YUV420 upscaler
-nofilter .... disable in-loop filtering
-dither <int> dithering strength (0..100), default=50
-noalphadither disable alpha plane dithering
-usebgcolor .. display background color
-mt .......... use multi-threading
-info ........ print info
-h ........... this help message
```
Keyboard shortcuts:
```
'c' ................ toggle use of color profile
'b' ................ toggle background color display
'i' ................ overlay file information
'd' ................ disable blending & disposal (debug)
'q' / 'Q' / ESC .... quit
```
### Building
Prerequisites:
1. OpenGL & OpenGL Utility Toolkit (GLUT)
Linux: `sudo apt-get install freeglut3-dev mesa-common-dev`
Mac + Xcode: These libraries should be available in the OpenGL / GLUT
frameworks.
Windows: http://freeglut.sourceforge.net/index.php#download
2. (Optional) qcms (Quick Color Management System)
1. Download qcms from Mozilla / Chromium:
https://hg.mozilla.org/mozilla-central/file/0e7639e3bdfb/gfx/qcms
https://source.chromium.org/chromium/chromium/src/+/main:third_party/qcms/;drc=d4a2f8e1ed461d8fc05ed88d1ae2dc94c9773825
2. Build and archive the source files as libqcms.a / qcms.lib
3. Update makefile.unix / Makefile.vc
1. Define WEBP_HAVE_QCMS
2. Update include / library paths to reference the qcms directory.
Build using makefile.unix / Makefile.vc:
```shell
$ make -f makefile.unix examples/vwebp
> nmake /f Makefile.vc CFG=release-static \
../obj/x64/release-static/bin/vwebp.exe
```
## Animation creation tool
The utility `img2webp` can turn a sequence of input images (PNG, JPEG, ...) into
an animated WebP file. It offers fine control over duration, encoding modes,
etc.
Usage:
```shell
img2webp [file_options] [[frame_options] frame_file]... [-o webp_file]
```
File-level options (only used at the start of compression):
```
-min_size ............ minimize size
-kmax <int> .......... maximum number of frame between key-frames
(0=only keyframes)
-kmin <int> .......... minimum number of frame between key-frames
(0=disable key-frames altogether)
-mixed ............... use mixed lossy/lossless automatic mode
-near_lossless <int> . use near-lossless image preprocessing
(0..100=off), default=100
-sharp_yuv ........... use sharper (and slower) RGB->YUV conversion
(lossy only)
-loop <int> .......... loop count (default: 0, = infinite loop)
-v ................... verbose mode
-h ................... this help
-version ............. print version number and exit
```
Per-frame options (only used for subsequent images input):
```
-d <int> ............. frame duration in ms (default: 100)
-lossless ........... use lossless mode (default)
-lossy ... ........... use lossy mode
-q <float> ........... quality
-m <int> ............. method to use
```
example: `img2webp -loop 2 in0.png -lossy in1.jpg -d 80 in2.tiff -o out.webp`
Note: if a single file name is passed as the argument, the arguments will be
tokenized from this file. The file name must not start with the character '-'.
## Animated GIF conversion
Animated GIF files can be converted to WebP files with animation using the
gif2webp utility available under examples/. The files can then be viewed using
vwebp.
Usage:
```shell
gif2webp [options] gif_file -o webp_file
```
Options:
```
-h / -help ............. this help
-lossy ................. encode image using lossy compression
-mixed ................. for each frame in the image, pick lossy
or lossless compression heuristically
-q <float> ............. quality factor (0:small..100:big)
-m <int> ............... compression method (0=fast, 6=slowest)
-min_size .............. minimize output size (default:off)
lossless compression by default; can be
combined with -q, -m, -lossy or -mixed
options
-kmin <int> ............ min distance between key frames
-kmax <int> ............ max distance between key frames
-f <int> ............... filter strength (0=off..100)
-metadata <string> ..... comma separated list of metadata to
copy from the input to the output if present
Valid values: all, none, icc, xmp (default)
-loop_compatibility .... use compatibility mode for Chrome
version prior to M62 (inclusive)
-mt .................... use multi-threading if available
-version ............... print version number and exit
-v ..................... verbose
-quiet ................. don't print anything
```
### Building
With the libgif development files installed, gif2webp can be built using
makefile.unix:
```shell
$ make -f makefile.unix examples/gif2webp
```
or using autoconf:
```shell
$ ./configure --enable-everything
$ make
```
## Comparison of animated images
Test utility anim_diff under examples/ can be used to compare two animated
images (each can be GIF or WebP).
Usage:
```shell
anim_diff <image1> <image2> [options]
```
Options:
```
-dump_frames <folder> dump decoded frames in PAM format
-min_psnr <float> ... minimum per-frame PSNR
-raw_comparison ..... if this flag is not used, RGB is
premultiplied before comparison
-max_diff <int> ..... maximum allowed difference per channel
between corresponding pixels in subsequent
frames
-h .................. this help
-version ............ print version number and exit
```
### Building
With the libgif development files installed, anim_diff can be built using
makefile.unix:
```shell
$ make -f makefile.unix examples/anim_diff
```
or using autoconf:
```shell
$ ./configure --enable-everything
$ make
```
## WebP Mux tool
The examples/ directory contains a tool (webpmux) for manipulating WebP files.
The webpmux tool can be used to create an extended format WebP file and also to
extract or strip relevant data from such a file.
A list of options is available using the -help command line flag:
```shell
> webpmux -help
Usage: webpmux -get GET_OPTIONS INPUT -o OUTPUT
webpmux -set SET_OPTIONS INPUT -o OUTPUT
webpmux -duration DURATION_OPTIONS [-duration ...]
INPUT -o OUTPUT
webpmux -strip STRIP_OPTIONS INPUT -o OUTPUT
webpmux -frame FRAME_OPTIONS [-frame...] [-loop LOOP_COUNT]
[-bgcolor BACKGROUND_COLOR] -o OUTPUT
webpmux -info INPUT
webpmux [-h|-help]
webpmux -version
webpmux argument_file_name
GET_OPTIONS:
Extract relevant data:
icc get ICC profile
exif get EXIF metadata
xmp get XMP metadata
frame n get nth frame
SET_OPTIONS:
Set color profile/metadata/parameters:
loop LOOP_COUNT set the loop count
bgcolor BACKGROUND_COLOR set the animation background color
icc file.icc set ICC profile
exif file.exif set EXIF metadata
xmp file.xmp set XMP metadata
where: 'file.icc' contains the ICC profile to be set,
'file.exif' contains the EXIF metadata to be set
'file.xmp' contains the XMP metadata to be set
DURATION_OPTIONS:
Set duration of selected frames:
duration set duration for all frames
duration,frame set duration of a particular frame
duration,start,end set duration of frames in the
interval [start,end])
where: 'duration' is the duration in milliseconds
'start' is the start frame index
'end' is the inclusive end frame index
The special 'end' value '0' means: last frame.
STRIP_OPTIONS:
Strip color profile/metadata:
icc strip ICC profile
exif strip EXIF metadata
xmp strip XMP metadata
FRAME_OPTIONS(i):
Create animation:
file_i +di[+xi+yi[+mi[bi]]]
where: 'file_i' is the i'th animation frame (WebP format),
'di' is the pause duration before next frame,
'xi','yi' specify the image offset for this frame,
'mi' is the dispose method for this frame (0 or 1),
'bi' is the blending method for this frame (+b or -b)
LOOP_COUNT:
Number of times to repeat the animation.
Valid range is 0 to 65535 [Default: 0 (infinite)].
BACKGROUND_COLOR:
Background color of the canvas.
A,R,G,B
where: 'A', 'R', 'G' and 'B' are integers in the range 0 to 255 specifying
the Alpha, Red, Green and Blue component values respectively
[Default: 255,255,255,255]
INPUT & OUTPUT are in WebP format.
Note: The nature of EXIF, XMP and ICC data is not checked and is assumed to be
valid.
Note: if a single file name is passed as the argument, the arguments will be
tokenized from this file. The file name must not start with the character '-'.
```

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WebP Container Specification
============================
* TOC placeholder
{:toc}
Introduction
------------
WebP is an image format that uses either (i) the VP8 key frame encoding to
compress image data in a lossy way or (ii) the WebP lossless encoding. These
encoding schemes should make it more efficient than older formats, such as JPEG,
GIF, and PNG. It is optimized for fast image transfer over the network (for
example, for websites). The WebP format has feature parity (color profile,
metadata, animation, etc.) with other formats as well. This document describes
the structure of a WebP file.
The WebP container (that is, the RIFF container for WebP) allows feature support
over and above the basic use case of WebP (that is, a file containing a single
image encoded as a VP8 key frame). The WebP container provides additional
support for the following:
* Lossless Compression: An image can be losslessly compressed, using the
WebP Lossless Format.
* Metadata: An image may have metadata stored in Exchangeable Image File
Format (Exif) or Extensible Metadata Platform (XMP) format.
* Transparency: An image may have transparency, that is, an alpha channel.
* Color Profile: An image may have an embedded ICC profile as described
by the [International Color Consortium][iccspec].
* Animation: An image may have multiple frames with pauses between them,
making it an animation.
Terminology & Basics
--------------------
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD",
"SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in BCP 14 [RFC 2119][] [RFC 8174][]
when, and only when, they appear in all capitals, as shown here.
A WebP file contains either a still image (that is, an encoded matrix of pixels)
or an [animation](#animation). Optionally, it can also contain transparency
information, a color profile and metadata. We refer to the matrix of pixels as
the _canvas_ of the image.
Bit numbering in chunk diagrams starts at `0` for the most significant bit
('MSB 0'), as described in [RFC 1166][].
Below are additional terms used throughout this document:
_Reader/Writer_
: Code that reads WebP files is referred to as a _reader_, while code that
writes them is referred to as a _writer_.
_uint16_
: A 16-bit, little-endian, unsigned integer.
_uint24_
: A 24-bit, little-endian, unsigned integer.
_uint32_
: A 32-bit, little-endian, unsigned integer.
_FourCC_
: A four-character code (FourCC) is a _uint32_ created by concatenating four
ASCII characters in little-endian order. This means 'aaaa' (0x61616161) and
'AAAA' (0x41414141) are treated as different _FourCCs_.
_1-based_
: An unsigned integer field storing values offset by `-1`, for example, such a
field would store value _25_ as _24_.
_ChunkHeader('ABCD')_
: Used to describe the _FourCC_ and _Chunk Size_ header of individual chunks,
where 'ABCD' is the FourCC for the chunk. This element's size is 8 bytes.
RIFF File Format
----------------
The WebP file format is based on the RIFF (Resource Interchange File Format)
document format.
The basic element of a RIFF file is a _chunk_. It consists of:
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Chunk FourCC |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Chunk Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
: Chunk Payload :
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Chunk FourCC: 32 bits
: ASCII four-character code used for chunk identification.
Chunk Size: 32 bits (_uint32_)
: The size of the chunk in bytes, not including this field, the chunk
identifier, or padding.
Chunk Payload: _Chunk Size_ bytes
: The data payload. If _Chunk Size_ is odd, a single padding byte -- which MUST
be `0` to conform with RIFF -- is added.
**Note:** RIFF has a convention that all-uppercase chunk FourCCs are standard
chunks that apply to any RIFF file format, while FourCCs specific to a file
format are all lowercase. WebP does not follow this convention.
WebP File Header
----------------
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| 'R' | 'I' | 'F' | 'F' |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| File Size |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| 'W' | 'E' | 'B' | 'P' |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
'RIFF': 32 bits
: The ASCII characters 'R', 'I', 'F', 'F'.
File Size: 32 bits (_uint32_)
: The size of the file in bytes, starting at offset 8. The maximum value of
this field is 2^32 minus 10 bytes and thus the size of the whole file is at
most 4 GiB minus 2 bytes.
'WEBP': 32 bits
: The ASCII characters 'W', 'E', 'B', 'P'.
A WebP file MUST begin with a RIFF header with the FourCC 'WEBP'. The file size
in the header is the total size of the chunks that follow plus `4` bytes for
the 'WEBP' FourCC. The file SHOULD NOT contain any data after the data
specified by _File Size_. Readers MAY parse such files, ignoring the trailing
data. As the size of any chunk is even, the size given by the RIFF header is
also even. The contents of individual chunks are described in the following
sections.
Simple File Format (Lossy)
--------------------------
This layout SHOULD be used if the image requires _lossy_ encoding and does not
require transparency or other advanced features provided by the extended format.
Files with this layout are smaller and supported by older software.
Simple WebP (lossy) file format:
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| WebP file header (12 bytes) |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
: 'VP8 ' Chunk :
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
'VP8 ' Chunk:
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ChunkHeader('VP8 ') |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
: VP8 data :
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
VP8 data: _Chunk Size_ bytes
: VP8 bitstream data.
Note that the fourth character in the 'VP8 ' FourCC is an ASCII space (0x20).
The VP8 bitstream format specification is described in [VP8 Data Format and
Decoding Guide][rfc 6386]. Note that the VP8 frame header contains the VP8 frame
width and height. That is assumed to be the width and height of the canvas.
The VP8 specification describes how to decode the image into Y'CbCr format. To
convert to RGB, [Recommendation BT.601][rec601] SHOULD be used. Applications MAY
use another conversion method, but visual results may differ among decoders.
Simple File Format (Lossless)
-----------------------------
**Note:** Older readers may not support files using the lossless format.
This layout SHOULD be used if the image requires _lossless_ encoding (with an
optional transparency channel) and does not require advanced features provided
by the extended format.
Simple WebP (lossless) file format:
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| WebP file header (12 bytes) |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
: 'VP8L' Chunk :
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
'VP8L' Chunk:
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ChunkHeader('VP8L') |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
: VP8L data :
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
VP8L data: _Chunk Size_ bytes
: VP8L bitstream data.
The current specification of the VP8L bitstream can be found at
[WebP Lossless Bitstream Format][webpllspec]. Note that the VP8L header
contains the VP8L image width and height. That is assumed to be the width
and height of the canvas.
Extended File Format
--------------------
**Note:** Older readers may not support files using the extended format.
An extended format file consists of:
* A 'VP8X' Chunk with information about features used in the file.
* An optional 'ICCP' Chunk with a color profile.
* An optional 'ANIM' Chunk with animation control data.
* Image data.
* An optional 'EXIF' Chunk with Exif metadata.
* An optional 'XMP ' Chunk with XMP metadata.
* An optional list of [unknown chunks](#unknown-chunks).
For a _still image_, the _image data_ consists of a single frame, which is made
up of:
* An optional [alpha subchunk](#alpha).
* A [bitstream subchunk](#bitstream-vp8vp8l).
For an _animated image_, the _image data_ consists of multiple frames. More
details about frames can be found in the [Animation](#animation) section.
All chunks SHOULD be placed in the same order as listed above. If a chunk
appears in the wrong place, the file is invalid, but readers MAY parse the
file, ignoring the chunks that are out of order.
**Rationale:** Setting the order of chunks should allow quicker file
parsing. For example, if an 'ALPH' Chunk does not appear in its required
position, a decoder can choose to stop searching for it. The rule of
ignoring late chunks should make programs that need to do a full search
give the same results as the ones stopping early.
Extended WebP file header:
{:#extended_header}
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
| WebP file header (12 bytes) |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ChunkHeader('VP8X') |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|Rsv|I|L|E|X|A|R| Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Canvas Width Minus One | ...
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
... Canvas Height Minus One |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Reserved (Rsv): 2 bits
: MUST be `0`. Readers MUST ignore this field.
ICC profile (I): 1 bit
: Set if the file contains an 'ICCP' Chunk.
Alpha (L): 1 bit
: Set if any of the frames of the image contain transparency information
("alpha").
Exif metadata (E): 1 bit
: Set if the file contains Exif metadata.
XMP metadata (X): 1 bit
: Set if the file contains XMP metadata.
Animation (A): 1 bit
: Set if this is an animated image. Data in 'ANIM' and 'ANMF' Chunks should be
used to control the animation.
Reserved (R): 1 bit
: MUST be `0`. Readers MUST ignore this field.
Reserved: 24 bits
: MUST be `0`. Readers MUST ignore this field.
Canvas Width Minus One: 24 bits
: _1-based_ width of the canvas in pixels.
The actual canvas width is `1 + Canvas Width Minus One`.
Canvas Height Minus One: 24 bits
: _1-based_ height of the canvas in pixels.
The actual canvas height is `1 + Canvas Height Minus One`.
The product of _Canvas Width_ and _Canvas Height_ MUST be at most `2^32 - 1`.
Future specifications may add more fields. Unknown fields MUST be ignored.
### Chunks
#### Animation
An animation is controlled by 'ANIM' and 'ANMF' Chunks.
'ANIM' Chunk:
{:#anim_chunk}
For an animated image, this chunk contains the _global parameters_ of the
animation.
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ChunkHeader('ANIM') |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Background Color |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Loop Count |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Background Color: 32 bits (_uint32_)
: The default background color of the canvas in \[Blue, Green, Red, Alpha\]
byte order. This color MAY be used to fill the unused space on the canvas
around the frames, as well as the transparent pixels of the first frame.
The background color is also used when the Disposal method is `1`.
**Note**:
* The background color MAY contain a non-opaque alpha value, even if the
_Alpha_ flag in the ['VP8X' Chunk](#extended_header) is unset.
* Viewer applications SHOULD treat the background color value as a hint and
are not required to use it.
* The canvas is cleared at the start of each loop. The background color MAY be
used to achieve this.
Loop Count: 16 bits (_uint16_)
: The number of times to loop the animation. If it is `0`, this means
infinitely.
This chunk MUST appear if the _Animation_ flag in the 'VP8X' Chunk is set.
If the _Animation_ flag is not set and this chunk is present, it MUST be
ignored.
'ANMF' Chunk:
For animated images, this chunk contains information about a _single_ frame.
If the _Animation flag_ is not set, then this chunk SHOULD NOT be present.
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ChunkHeader('ANMF') |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Frame X | ...
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
... Frame Y | Frame Width Minus One ...
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
... | Frame Height Minus One |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Frame Duration | Reserved |B|D|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
: Frame Data :
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Frame X: 24 bits (_uint24_)
: The X coordinate of the upper left corner of the frame is `Frame X * 2`.
Frame Y: 24 bits (_uint24_)
: The Y coordinate of the upper left corner of the frame is `Frame Y * 2`.
Frame Width Minus One: 24 bits (_uint24_)
: The _1-based_ width of the frame.
The frame width is `1 + Frame Width Minus One`.
Frame Height Minus One: 24 bits (_uint24_)
: The _1-based_ height of the frame.
The frame height is `1 + Frame Height Minus One`.
Frame Duration: 24 bits (_uint24_)
: The time to wait before displaying the next frame, in 1-millisecond units.
Note that the interpretation of the Frame Duration of 0 (and often <= 10) is
defined by the implementation. Many tools and browsers assign a minimum
duration similar to GIF.
Reserved: 6 bits
: MUST be `0`. Readers MUST ignore this field.
Blending method (B): 1 bit
: Indicates how transparent pixels of _the current frame_ are to be blended
with corresponding pixels of the previous canvas:
* `0`: Use alpha-blending. After disposing of the previous frame, render the
current frame on the canvas using [alpha-blending](#alpha-blending). If
the current frame does not have an alpha channel, assume the alpha value
is 255, effectively replacing the rectangle.
* `1`: Do not blend. After disposing of the previous frame, render the
current frame on the canvas by overwriting the rectangle covered by the
current frame.
Disposal method (D): 1 bit
: Indicates how _the current frame_ is to be treated after it has been
displayed (before rendering the next frame) on the canvas:
* `0`: Do not dispose. Leave the canvas as is.
* `1`: Dispose to the background color. Fill the _rectangle_ on the canvas
covered by the _current frame_ with the background color specified in the
['ANIM' Chunk](#anim_chunk).
**Notes**:
* The frame disposal only applies to the _frame rectangle_, that is, the
rectangle defined by _Frame X_, _Frame Y_, _frame width_, and _frame
height_. It may or may not cover the whole canvas.
{:#alpha-blending}
* Alpha-blending:
Given that each of the R, G, B, and A channels is 8 bits, and the RGB
channels are _not premultiplied_ by alpha, the formula for blending
'dst' onto 'src' is:
~~~~~
blend.A = src.A + dst.A * (1 - src.A / 255)
if blend.A = 0 then
blend.RGB = 0
else
blend.RGB =
(src.RGB * src.A +
dst.RGB * dst.A * (1 - src.A / 255)) / blend.A
~~~~~
* Alpha-blending SHOULD be done in linear color space, by taking into account
the [color profile](#color-profile) of the image. If the color profile is
not present, standard RGB (sRGB) is to be assumed. (Note that sRGB also
needs to be linearized due to a gamma of ~2.2.)
Frame Data: _Chunk Size_ - `16` bytes
: Consists of:
* An optional [alpha subchunk](#alpha) for the frame.
* A [bitstream subchunk](#bitstream-vp8vp8l) for the frame.
* An optional list of [unknown chunks](#unknown-chunks).
**Note**: The 'ANMF' payload, _Frame Data_ above, consists of individual
_padded_ chunks, as described by the [RIFF file format](#riff-file-format).
#### Alpha
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ChunkHeader('ALPH') |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|Rsv| P | F | C | Alpha Bitstream... |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Reserved (Rsv): 2 bits
: MUST be `0`. Readers MUST ignore this field.
Preprocessing (P): 2 bits
: These _informative_ bits are used to signal the preprocessing that has
been performed during compression. The decoder can use this information to
for example, dither the values or smooth the gradients prior to display.
* `0`: No preprocessing.
* `1`: Level reduction.
Decoders are not required to use this information in any specified way.
Filtering method (F): 2 bits
: The filtering methods used are described as follows:
* `0`: None.
* `1`: Horizontal filter.
* `2`: Vertical filter.
* `3`: Gradient filter.
For each pixel, filtering is performed using the following calculations.
Assume the alpha values surrounding the current `X` position are labeled as:
C | B |
---+---+
A | X |
We seek to compute the alpha value at position `X`. First, a prediction is
made depending on the filtering method:
* Method `0`: predictor = 0
* Method `1`: predictor = A
* Method `2`: predictor = B
* Method `3`: predictor = clip(A + B - C)
where `clip(v)` is equal to:
* 0 if v < 0,
* 255 if v > 255, or
* v otherwise
The final value is derived by adding the decompressed value `X` to the
predictor and using modulo-256 arithmetic to wrap the \[256..511\] range
into the \[0..255\] one:
`alpha = (predictor + X) % 256`
There are special cases for the left-most and top-most pixel positions. For
example, the top-left value at location (0, 0) uses 0 as the predictor value.
Otherwise:
* For horizontal or gradient filtering methods, the left-most pixels at
location (0, y) are predicted using the location (0, y-1) just above.
* For vertical or gradient filtering methods, the top-most pixels at
location (x, 0) are predicted using the location (x-1, 0) on the left.
Compression method (C): 2 bits
: The compression method used:
* `0`: No compression.
* `1`: Compressed using the WebP lossless format.
Alpha bitstream: _Chunk Size_ - `1` bytes
: Encoded alpha bitstream.
This optional chunk contains encoded alpha data for this frame. A frame
containing a 'VP8L' Chunk SHOULD NOT contain this chunk.
**Rationale**: The transparency information is already part of the 'VP8L'
Chunk.
The alpha channel data is stored as uncompressed raw data (when the
compression method is '0') or compressed using the lossless format
(when the compression method is '1').
* Raw data: This consists of a byte sequence of length = width * height,
containing all the 8-bit transparency values in scan order.
* Lossless format compression: The byte sequence is a compressed
image-stream (as described in ["WebP Lossless Bitstream Format"]
[webpllspec]) of implicit dimensions width x height. That is, this
image-stream does NOT contain any headers describing the image dimensions.
**Rationale**: The dimensions are already known from other sources,
so storing them again would be redundant and prone to error.
Once the image-stream is decoded into Alpha, Red, Green, Blue (ARGB) color
values, following the process described in the lossless format
specification, the transparency information must be extracted from the
*green* channel of the ARGB quadruplet.
**Rationale**: The green channel is allowed extra transformation
steps in the specification -- unlike the other channels -- that can
improve compression.
#### Bitstream (VP8/VP8L)
This chunk contains compressed bitstream data for a single frame.
A bitstream chunk may be either (i) a 'VP8 ' Chunk, using 'VP8 ' (note the
significant fourth-character space) as its FourCC, _or_ (ii) a 'VP8L' Chunk,
using 'VP8L' as its FourCC.
The formats of 'VP8 ' and 'VP8L' Chunks are as described in sections
[Simple File Format (Lossy)](#simple-file-format-lossy)
and [Simple File Format (Lossless)](#simple-file-format-lossless), respectively.
#### Color Profile
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ChunkHeader('ICCP') |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
: Color Profile :
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Color Profile: _Chunk Size_ bytes
: ICC profile.
This chunk MUST appear before the image data.
There SHOULD be at most one such chunk. If there are more such chunks, readers
MAY ignore all except the first one.
See the [ICC Specification][iccspec] for details.
If this chunk is not present, sRGB SHOULD be assumed.
#### Metadata
Metadata can be stored in 'EXIF' or 'XMP ' Chunks.
There SHOULD be at most one chunk of each type ('EXIF' and 'XMP '). If there
are more such chunks, readers MAY ignore all except the first one.
The chunks are defined as follows:
'EXIF' Chunk:
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ChunkHeader('EXIF') |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
: Exif Metadata :
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Exif Metadata: _Chunk Size_ bytes
: Image metadata in Exif format.
'XMP ' Chunk:
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| ChunkHeader('XMP ') |
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
: XMP Metadata :
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
XMP Metadata: _Chunk Size_ bytes
: Image metadata in XMP format.
Note that the fourth character in the 'XMP ' FourCC is an ASCII space (0x20).
Additional guidance about handling metadata can be found in the
Metadata Working Group's ["Guidelines for Handling Metadata"][metadata].
#### Unknown Chunks
A RIFF chunk (described in the [RIFF File Format](#riff-file-format) section)
whose FourCC is different from any of the chunks described in this document, is
considered an _unknown chunk_.
**Rationale**: Allowing unknown chunks gives a provision for future extension
of the format and also allows storage of any application-specific data.
A file MAY contain unknown chunks:
* at the end of the file, as described in [Extended WebP file
header](#extended_header) section, or
* at the end of 'ANMF' Chunks, as described in the
[Animation](#animation) section.
Readers SHOULD ignore these chunks. Writers SHOULD preserve them in their
original order (unless they specifically intend to modify these chunks).
### Canvas Assembly from Frames
Here we provide an overview of how a reader MUST assemble a canvas in the case
of an animated image.
The process begins with creating a canvas using the dimensions given in the
'VP8X' Chunk, `Canvas Width Minus One + 1` pixels wide by `Canvas Height Minus
One + 1` pixels high. The `Loop Count` field from the 'ANIM' Chunk controls how
many times the animation process is repeated. This is `Loop Count - 1` for
nonzero `Loop Count` values or infinite if the `Loop Count` is zero.
At the beginning of each loop iteration, the canvas is filled using the
background color from the 'ANIM' Chunk or an application-defined color.
'ANMF' Chunks contain individual frames given in display order. Before rendering
each frame, the previous frame's `Disposal method` is applied.
The rendering of the decoded frame begins at the Cartesian coordinates (`2 *
Frame X`, `2 * Frame Y`), using the top-left corner of the canvas as the origin.
`Frame Width Minus One + 1` pixels wide by `Frame Height Minus One + 1` pixels
high are rendered onto the canvas using the `Blending method`.
The canvas is displayed for `Frame Duration` milliseconds. This continues until
all frames given by 'ANMF' Chunks have been displayed. A new loop iteration is
then begun, or the canvas is left in its final state if all iterations have been
completed.
The following pseudocode illustrates the rendering process. The notation
_VP8X.field_ means the field in the 'VP8X' Chunk with the same description.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
assert VP8X.flags.hasAnimation
canvas ← new image of size VP8X.canvasWidth x VP8X.canvasHeight with
background color ANIM.background_color.
loop_count ← ANIM.loopCount
dispose_method ← Dispose to background color
if loop_count == 0:
loop_count = ∞
frame_params ← nil
assert next chunk in image_data is ANMF
for loop = 0..loop_count - 1
clear canvas to ANIM.background_color or application-defined color
until eof or non-ANMF chunk
frame_params.frameX = Frame X
frame_params.frameY = Frame Y
frame_params.frameWidth = Frame Width Minus One + 1
frame_params.frameHeight = Frame Height Minus One + 1
frame_params.frameDuration = Frame Duration
frame_right = frame_params.frameX + frame_params.frameWidth
frame_bottom = frame_params.frameY + frame_params.frameHeight
assert VP8X.canvasWidth >= frame_right
assert VP8X.canvasHeight >= frame_bottom
for subchunk in 'Frame Data':
if subchunk.tag == "ALPH":
assert alpha subchunks not found in 'Frame Data' earlier
frame_params.alpha = alpha_data
else if subchunk.tag == "VP8 " OR subchunk.tag == "VP8L":
assert bitstream subchunks not found in 'Frame Data' earlier
frame_params.bitstream = bitstream_data
render frame with frame_params.alpha and frame_params.bitstream
on canvas with top-left corner at (frame_params.frameX,
frame_params.frameY), using Blending method
frame_params.blendingMethod.
canvas contains the decoded image.
Show the contents of the canvas for
frame_params.frameDuration * 1 ms.
dispose_method = frame_params.disposeMethod
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Example File Layouts
--------------------
A lossy-encoded image with alpha may look as follows:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
RIFF/WEBP
+- VP8X (descriptions of features used)
+- ALPH (alpha bitstream)
+- VP8 (bitstream)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
A lossless-encoded image may look as follows:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
RIFF/WEBP
+- VP8X (descriptions of features used)
+- XYZW (unknown chunk)
+- VP8L (lossless bitstream)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
A lossless image with an ICC profile and XMP metadata may
look as follows:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
RIFF/WEBP
+- VP8X (descriptions of features used)
+- ICCP (color profile)
+- VP8L (lossless bitstream)
+- XMP (metadata)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
An animated image with Exif metadata may look as follows:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
RIFF/WEBP
+- VP8X (descriptions of features used)
+- ANIM (global animation parameters)
+- ANMF (frame1 parameters + data)
+- ANMF (frame2 parameters + data)
+- ANMF (frame3 parameters + data)
+- ANMF (frame4 parameters + data)
+- EXIF (metadata)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[webpllspec]: https://chromium.googlesource.com/webm/libwebp/+/HEAD/doc/webp-lossless-bitstream-spec.txt
[iccspec]: https://www.color.org/icc_specs2.xalter
[metadata]: https://web.archive.org/web/20180919181934/http://www.metadataworkinggroup.org/pdf/mwg_guidance.pdf
[rec601]: https://www.itu.int/rec/R-REC-BT.601
[rfc 1166]: https://datatracker.ietf.org/doc/html/rfc1166
[rfc 2119]: https://datatracker.ietf.org/doc/html/rfc2119
[rfc 6386]: https://datatracker.ietf.org/doc/html/rfc6386
[rfc 8174]: https://datatracker.ietf.org/doc/html/rfc8174

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# Ignore this file during non-NDK builds.
ifdef NDK_ROOT
LOCAL_PATH := $(call my-dir)
################################################################################
# libexample_util
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
example_util.c \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../src
LOCAL_MODULE := example_util
include $(BUILD_STATIC_LIBRARY)
################################################################################
# cwebp
include $(CLEAR_VARS)
# Note: to enable jpeg/png encoding the sources from AOSP can be used with
# minor modification to their Android.mk files.
LOCAL_SRC_FILES := \
cwebp.c \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_STATIC_LIBRARIES := example_util imageio_util imagedec webpdemux webp
LOCAL_MODULE := cwebp
include $(BUILD_EXECUTABLE)
################################################################################
# dwebp
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
dwebp.c \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_STATIC_LIBRARIES := example_util imagedec imageenc webpdemux webp
LOCAL_MODULE := dwebp
include $(BUILD_EXECUTABLE)
################################################################################
# webpmux
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
webpmux.c \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_STATIC_LIBRARIES := example_util imageio_util webpmux webp
LOCAL_MODULE := webpmux_example
include $(BUILD_EXECUTABLE)
################################################################################
# img2webp
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
img2webp.c \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_STATIC_LIBRARIES := example_util imageio_util imagedec webpmux webpdemux \
webp
LOCAL_MODULE := img2webp_example
include $(BUILD_EXECUTABLE)
################################################################################
# webpinfo
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
webpinfo.c \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_STATIC_LIBRARIES := example_util imageio_util webp
LOCAL_MODULE := webpinfo_example
include $(BUILD_EXECUTABLE)
endif # NDK_ROOT

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AM_CPPFLAGS += -I$(top_builddir)/src -I$(top_srcdir)/src
bin_PROGRAMS =
if BUILD_DEMUX
bin_PROGRAMS += dwebp cwebp
endif
if BUILD_ANIMDIFF
noinst_PROGRAMS = anim_diff anim_dump
endif
if BUILD_GIF2WEBP
bin_PROGRAMS += gif2webp
endif
if BUILD_IMG2WEBP
bin_PROGRAMS += img2webp
endif
if BUILD_MUX
bin_PROGRAMS += webpmux
endif
if BUILD_VWEBP
bin_PROGRAMS += vwebp
endif
if BUILD_WEBPINFO
bin_PROGRAMS += webpinfo
endif
noinst_LTLIBRARIES = libexample_util.la
libexample_util_la_SOURCES = example_util.c example_util.h
libexample_util_la_LIBADD = ../src/libwebp.la
anim_diff_SOURCES = anim_diff.c anim_util.c anim_util.h gifdec.c gifdec.h
anim_diff_CPPFLAGS = $(AM_CPPFLAGS) $(GIF_INCLUDES)
anim_diff_LDADD =
anim_diff_LDADD += ../src/demux/libwebpdemux.la
anim_diff_LDADD += libexample_util.la
anim_diff_LDADD += ../imageio/libimageio_util.la
anim_diff_LDADD += $(GIF_LIBS) -lm
anim_dump_SOURCES = anim_dump.c anim_util.c anim_util.h gifdec.c gifdec.h
anim_dump_CPPFLAGS = $(AM_CPPFLAGS) $(PNG_INCLUDES)
anim_dump_CPPFLAGS += $(GIF_INCLUDES)
anim_dump_LDADD =
anim_dump_LDADD += ../src/demux/libwebpdemux.la
anim_dump_LDADD += libexample_util.la
anim_dump_LDADD += ../imageio/libimageio_util.la
anim_dump_LDADD += ../imageio/libimageenc.la
anim_dump_LDADD += $(PNG_LIBS) $(GIF_LIBS) $(TIFF_LIBS) -lm
cwebp_SOURCES = cwebp.c stopwatch.h
cwebp_CPPFLAGS = $(AM_CPPFLAGS) -I$(top_srcdir)
cwebp_LDADD =
cwebp_LDADD += libexample_util.la
cwebp_LDADD += ../imageio/libimageio_util.la
cwebp_LDADD += ../imageio/libimagedec.la
cwebp_LDADD += ../src/libwebp.la
cwebp_LDADD += $(JPEG_LIBS) $(PNG_LIBS) $(TIFF_LIBS)
dwebp_SOURCES = dwebp.c stopwatch.h
dwebp_CPPFLAGS = $(AM_CPPFLAGS)
dwebp_CPPFLAGS += $(JPEG_INCLUDES) $(PNG_INCLUDES)
dwebp_LDADD =
dwebp_LDADD += libexample_util.la
dwebp_LDADD += ../imageio/libimagedec.la
dwebp_LDADD += ../imageio/libimageenc.la
dwebp_LDADD += ../imageio/libimageio_util.la
dwebp_LDADD += ../src/libwebp.la
dwebp_LDADD +=$(PNG_LIBS) $(JPEG_LIBS)
gif2webp_SOURCES = gif2webp.c gifdec.c gifdec.h
gif2webp_CPPFLAGS = $(AM_CPPFLAGS) $(GIF_INCLUDES)
gif2webp_LDADD =
gif2webp_LDADD += libexample_util.la
gif2webp_LDADD += ../imageio/libimageio_util.la
gif2webp_LDADD += ../src/mux/libwebpmux.la
gif2webp_LDADD += ../src/libwebp.la
gif2webp_LDADD += $(GIF_LIBS)
vwebp_SOURCES = vwebp.c
vwebp_CPPFLAGS = $(AM_CPPFLAGS) $(GL_INCLUDES)
vwebp_LDADD =
vwebp_LDADD += libexample_util.la
vwebp_LDADD += ../imageio/libimageio_util.la
vwebp_LDADD += ../src/demux/libwebpdemux.la
vwebp_LDADD += $(GL_LIBS)
webpmux_SOURCES = webpmux.c
webpmux_CPPFLAGS = $(AM_CPPFLAGS)
webpmux_LDADD =
webpmux_LDADD += libexample_util.la
webpmux_LDADD += ../imageio/libimageio_util.la
webpmux_LDADD += ../src/mux/libwebpmux.la
webpmux_LDADD += ../src/libwebp.la
img2webp_SOURCES = img2webp.c
img2webp_CPPFLAGS = $(AM_CPPFLAGS) -I$(top_srcdir)
img2webp_LDADD =
img2webp_LDADD += libexample_util.la
img2webp_LDADD += ../imageio/libimageio_util.la
img2webp_LDADD += ../imageio/libimagedec.la
img2webp_LDADD += ../src/mux/libwebpmux.la
img2webp_LDADD += ../src/libwebp.la
img2webp_LDADD += $(PNG_LIBS) $(JPEG_LIBS) $(TIFF_LIBS)
webpinfo_SOURCES = webpinfo.c
webpinfo_CPPFLAGS = $(AM_CPPFLAGS)
webpinfo_LDADD =
webpinfo_LDADD += libexample_util.la
webpinfo_LDADD += ../imageio/libimageio_util.la
webpinfo_LDADD += ../src/libwebp.la
if BUILD_LIBWEBPDECODER
anim_diff_LDADD += ../src/libwebpdecoder.la
anim_dump_LDADD += ../src/libwebpdecoder.la
vwebp_LDADD += ../src/libwebpdecoder.la
else
anim_diff_LDADD += ../src/libwebp.la
anim_dump_LDADD += ../src/libwebp.la
vwebp_LDADD += ../src/libwebp.la
endif

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@ -1,317 +0,0 @@
// Copyright 2015 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Checks if given pair of animated GIF/WebP images are identical:
// That is: their reconstructed canvases match pixel-by-pixel and their other
// animation properties (loop count etc) also match.
//
// example: anim_diff foo.gif bar.webp
#include <assert.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h> // for 'strtod'.
#include <string.h> // for 'strcmp'.
#include "./anim_util.h"
#include "./example_util.h"
#include "./unicode.h"
#if defined(_MSC_VER) && _MSC_VER < 1900
#define snprintf _snprintf
#endif
// Returns true if 'a + b' will overflow.
static int AdditionWillOverflow(int a, int b) {
return (b > 0) && (a > INT_MAX - b);
}
static int FramesAreEqual(const uint8_t* const rgba1,
const uint8_t* const rgba2, int width, int height) {
const int stride = width * 4; // Always true for 'DecodedFrame.rgba'.
return !memcmp(rgba1, rgba2, stride * height);
}
static WEBP_INLINE int PixelsAreSimilar(uint32_t src, uint32_t dst,
int max_allowed_diff) {
const int src_a = (src >> 24) & 0xff;
const int src_r = (src >> 16) & 0xff;
const int src_g = (src >> 8) & 0xff;
const int src_b = (src >> 0) & 0xff;
const int dst_a = (dst >> 24) & 0xff;
const int dst_r = (dst >> 16) & 0xff;
const int dst_g = (dst >> 8) & 0xff;
const int dst_b = (dst >> 0) & 0xff;
return (abs(src_r * src_a - dst_r * dst_a) <= (max_allowed_diff * 255)) &&
(abs(src_g * src_a - dst_g * dst_a) <= (max_allowed_diff * 255)) &&
(abs(src_b * src_a - dst_b * dst_a) <= (max_allowed_diff * 255)) &&
(abs(src_a - dst_a) <= max_allowed_diff);
}
static int FramesAreSimilar(const uint8_t* const rgba1,
const uint8_t* const rgba2,
int width, int height, int max_allowed_diff) {
int i, j;
assert(max_allowed_diff > 0);
for (j = 0; j < height; ++j) {
for (i = 0; i < width; ++i) {
const int stride = width * 4;
const size_t offset = j * stride + i;
if (!PixelsAreSimilar(rgba1[offset], rgba2[offset], max_allowed_diff)) {
return 0;
}
}
}
return 1;
}
// Minimize number of frames by combining successive frames that have at max
// 'max_diff' difference per channel between corresponding pixels.
static void MinimizeAnimationFrames(AnimatedImage* const img, int max_diff) {
uint32_t i;
for (i = 1; i < img->num_frames; ++i) {
DecodedFrame* const frame1 = &img->frames[i - 1];
DecodedFrame* const frame2 = &img->frames[i];
const uint8_t* const rgba1 = frame1->rgba;
const uint8_t* const rgba2 = frame2->rgba;
int should_merge_frames = 0;
// If merging frames will result in integer overflow for 'duration',
// skip merging.
if (AdditionWillOverflow(frame1->duration, frame2->duration)) continue;
if (max_diff > 0) {
should_merge_frames = FramesAreSimilar(rgba1, rgba2, img->canvas_width,
img->canvas_height, max_diff);
} else {
should_merge_frames =
FramesAreEqual(rgba1, rgba2, img->canvas_width, img->canvas_height);
}
if (should_merge_frames) { // Merge 'i+1'th frame into 'i'th frame.
frame1->duration += frame2->duration;
if (i + 1 < img->num_frames) {
memmove(&img->frames[i], &img->frames[i + 1],
(img->num_frames - i - 1) * sizeof(*img->frames));
}
--img->num_frames;
--i;
}
}
}
static int CompareValues(uint32_t a, uint32_t b, const char* output_str) {
if (a != b) {
fprintf(stderr, "%s: %d vs %d\n", output_str, a, b);
return 0;
}
return 1;
}
static int CompareBackgroundColor(uint32_t bg1, uint32_t bg2, int premultiply) {
if (premultiply) {
const int alpha1 = (bg1 >> 24) & 0xff;
const int alpha2 = (bg2 >> 24) & 0xff;
if (alpha1 == 0 && alpha2 == 0) return 1;
}
if (bg1 != bg2) {
fprintf(stderr, "Background color mismatch: 0x%08x vs 0x%08x\n",
bg1, bg2);
return 0;
}
return 1;
}
// Note: As long as frame durations and reconstructed frames are identical, it
// is OK for other aspects like offsets, dispose/blend method to vary.
static int CompareAnimatedImagePair(const AnimatedImage* const img1,
const AnimatedImage* const img2,
int premultiply,
double min_psnr) {
int ok = 1;
const int is_multi_frame_image = (img1->num_frames > 1);
uint32_t i;
ok = CompareValues(img1->canvas_width, img2->canvas_width,
"Canvas width mismatch") && ok;
ok = CompareValues(img1->canvas_height, img2->canvas_height,
"Canvas height mismatch") && ok;
ok = CompareValues(img1->num_frames, img2->num_frames,
"Frame count mismatch") && ok;
if (!ok) return 0; // These are fatal failures, can't proceed.
if (is_multi_frame_image) { // Checks relevant for multi-frame images only.
int max_loop_count_workaround = 0;
// Transcodes to webp increase the gif loop count by 1 for compatibility.
// When the gif has the maximum value the webp value will be off by one.
if ((img1->format == ANIM_GIF && img1->loop_count == 65536 &&
img2->format == ANIM_WEBP && img2->loop_count == 65535) ||
(img1->format == ANIM_WEBP && img1->loop_count == 65535 &&
img2->format == ANIM_GIF && img2->loop_count == 65536)) {
max_loop_count_workaround = 1;
}
ok = (max_loop_count_workaround ||
CompareValues(img1->loop_count, img2->loop_count,
"Loop count mismatch")) && ok;
ok = CompareBackgroundColor(img1->bgcolor, img2->bgcolor,
premultiply) && ok;
}
for (i = 0; i < img1->num_frames; ++i) {
// Pixel-by-pixel comparison.
const uint8_t* const rgba1 = img1->frames[i].rgba;
const uint8_t* const rgba2 = img2->frames[i].rgba;
int max_diff;
double psnr;
if (is_multi_frame_image) { // Check relevant for multi-frame images only.
const char format[] = "Frame #%d, duration mismatch";
char tmp[sizeof(format) + 8];
ok = ok && (snprintf(tmp, sizeof(tmp), format, i) >= 0);
ok = ok && CompareValues(img1->frames[i].duration,
img2->frames[i].duration, tmp);
}
GetDiffAndPSNR(rgba1, rgba2, img1->canvas_width, img1->canvas_height,
premultiply, &max_diff, &psnr);
if (min_psnr > 0.) {
if (psnr < min_psnr) {
fprintf(stderr, "Frame #%d, psnr = %.2lf (min_psnr = %f)\n", i,
psnr, min_psnr);
ok = 0;
}
} else {
if (max_diff != 0) {
fprintf(stderr, "Frame #%d, max pixel diff: %d\n", i, max_diff);
ok = 0;
}
}
}
return ok;
}
static void Help(void) {
printf("Usage: anim_diff <image1> <image2> [options]\n");
printf("\nOptions:\n");
printf(" -dump_frames <folder> dump decoded frames in PAM format\n");
printf(" -min_psnr <float> ... minimum per-frame PSNR\n");
printf(" -raw_comparison ..... if this flag is not used, RGB is\n");
printf(" premultiplied before comparison\n");
printf(" -max_diff <int> ..... maximum allowed difference per channel\n"
" between corresponding pixels in subsequent\n"
" frames\n");
printf(" -h .................. this help\n");
printf(" -version ............ print version number and exit\n");
}
int main(int argc, const char* argv[]) {
int return_code = -1;
int dump_frames = 0;
const char* dump_folder = NULL;
double min_psnr = 0.;
int got_input1 = 0;
int got_input2 = 0;
int premultiply = 1;
int max_diff = 0;
int i, c;
const char* files[2] = { NULL, NULL };
AnimatedImage images[2];
INIT_WARGV(argc, argv);
for (c = 1; c < argc; ++c) {
int parse_error = 0;
if (!strcmp(argv[c], "-dump_frames")) {
if (c < argc - 1) {
dump_frames = 1;
dump_folder = (const char*)GET_WARGV(argv, ++c);
} else {
parse_error = 1;
}
} else if (!strcmp(argv[c], "-min_psnr")) {
if (c < argc - 1) {
min_psnr = ExUtilGetFloat(argv[++c], &parse_error);
} else {
parse_error = 1;
}
} else if (!strcmp(argv[c], "-raw_comparison")) {
premultiply = 0;
} else if (!strcmp(argv[c], "-max_diff")) {
if (c < argc - 1) {
max_diff = ExUtilGetInt(argv[++c], 0, &parse_error);
} else {
parse_error = 1;
}
} else if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) {
Help();
FREE_WARGV_AND_RETURN(0);
} else if (!strcmp(argv[c], "-version")) {
int dec_version, demux_version;
GetAnimatedImageVersions(&dec_version, &demux_version);
printf("WebP Decoder version: %d.%d.%d\nWebP Demux version: %d.%d.%d\n",
(dec_version >> 16) & 0xff, (dec_version >> 8) & 0xff,
(dec_version >> 0) & 0xff,
(demux_version >> 16) & 0xff, (demux_version >> 8) & 0xff,
(demux_version >> 0) & 0xff);
FREE_WARGV_AND_RETURN(0);
} else {
if (!got_input1) {
files[0] = (const char*)GET_WARGV(argv, c);
got_input1 = 1;
} else if (!got_input2) {
files[1] = (const char*)GET_WARGV(argv, c);
got_input2 = 1;
} else {
parse_error = 1;
}
}
if (parse_error) {
Help();
FREE_WARGV_AND_RETURN(-1);
}
}
if (argc < 3) {
Help();
FREE_WARGV_AND_RETURN(-1);
}
if (!got_input2) {
Help();
FREE_WARGV_AND_RETURN(-1);
}
if (dump_frames) {
WPRINTF("Dumping decoded frames in: %s\n", (const W_CHAR*)dump_folder);
}
memset(images, 0, sizeof(images));
for (i = 0; i < 2; ++i) {
WPRINTF("Decoding file: %s\n", (const W_CHAR*)files[i]);
if (!ReadAnimatedImage(files[i], &images[i], dump_frames, dump_folder)) {
WFPRINTF(stderr, "Error decoding file: %s\n Aborting.\n",
(const W_CHAR*)files[i]);
return_code = -2;
goto End;
} else {
MinimizeAnimationFrames(&images[i], max_diff);
}
}
if (!CompareAnimatedImagePair(&images[0], &images[1],
premultiply, min_psnr)) {
WFPRINTF(stderr, "\nFiles %s and %s differ.\n", (const W_CHAR*)files[0],
(const W_CHAR*)files[1]);
return_code = -3;
} else {
WPRINTF("\nFiles %s and %s are identical.\n", (const W_CHAR*)files[0],
(const W_CHAR*)files[1]);
return_code = 0;
}
End:
ClearAnimatedImage(&images[0]);
ClearAnimatedImage(&images[1]);
FREE_WARGV_AND_RETURN(return_code);
}

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@ -1,121 +0,0 @@
// Copyright 2017 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Decodes an animated WebP file and dumps the decoded frames as PNG or TIFF.
//
// Author: Skal (pascal.massimino@gmail.com)
#include <stdio.h>
#include <string.h> // for 'strcmp'.
#include "./anim_util.h"
#include "webp/decode.h"
#include "../imageio/image_enc.h"
#include "./unicode.h"
#if defined(_MSC_VER) && _MSC_VER < 1900
#define snprintf _snprintf
#endif
static void Help(void) {
printf("Usage: anim_dump [options] files...\n");
printf("\nOptions:\n");
printf(" -folder <string> .... dump folder (default: '.')\n");
printf(" -prefix <string> .... prefix for dumped frames "
"(default: 'dump_')\n");
printf(" -tiff ............... save frames as TIFF\n");
printf(" -pam ................ save frames as PAM\n");
printf(" -h .................. this help\n");
printf(" -version ............ print version number and exit\n");
}
int main(int argc, const char* argv[]) {
int error = 0;
const W_CHAR* dump_folder = TO_W_CHAR(".");
const W_CHAR* prefix = TO_W_CHAR("dump_");
const W_CHAR* suffix = TO_W_CHAR("png");
WebPOutputFileFormat format = PNG;
int c;
INIT_WARGV(argc, argv);
if (argc < 2) {
Help();
FREE_WARGV_AND_RETURN(-1);
}
for (c = 1; !error && c < argc; ++c) {
if (!strcmp(argv[c], "-folder")) {
if (c + 1 == argc) {
fprintf(stderr, "missing argument after option '%s'\n", argv[c]);
error = 1;
break;
}
dump_folder = GET_WARGV(argv, ++c);
} else if (!strcmp(argv[c], "-prefix")) {
if (c + 1 == argc) {
fprintf(stderr, "missing argument after option '%s'\n", argv[c]);
error = 1;
break;
}
prefix = GET_WARGV(argv, ++c);
} else if (!strcmp(argv[c], "-tiff")) {
format = TIFF;
suffix = TO_W_CHAR("tiff");
} else if (!strcmp(argv[c], "-pam")) {
format = PAM;
suffix = TO_W_CHAR("pam");
} else if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) {
Help();
FREE_WARGV_AND_RETURN(0);
} else if (!strcmp(argv[c], "-version")) {
int dec_version, demux_version;
GetAnimatedImageVersions(&dec_version, &demux_version);
printf("WebP Decoder version: %d.%d.%d\nWebP Demux version: %d.%d.%d\n",
(dec_version >> 16) & 0xff, (dec_version >> 8) & 0xff,
(dec_version >> 0) & 0xff,
(demux_version >> 16) & 0xff, (demux_version >> 8) & 0xff,
(demux_version >> 0) & 0xff);
FREE_WARGV_AND_RETURN(0);
} else {
uint32_t i;
AnimatedImage image;
const W_CHAR* const file = GET_WARGV(argv, c);
memset(&image, 0, sizeof(image));
WPRINTF("Decoding file: %s as %s/%sxxxx.%s\n",
file, dump_folder, prefix, suffix);
if (!ReadAnimatedImage((const char*)file, &image, 0, NULL)) {
WFPRINTF(stderr, "Error decoding file: %s\n Aborting.\n", file);
error = 1;
break;
}
for (i = 0; !error && i < image.num_frames; ++i) {
W_CHAR out_file[1024];
WebPDecBuffer buffer;
WebPInitDecBuffer(&buffer);
buffer.colorspace = MODE_RGBA;
buffer.is_external_memory = 1;
buffer.width = image.canvas_width;
buffer.height = image.canvas_height;
buffer.u.RGBA.rgba = image.frames[i].rgba;
buffer.u.RGBA.stride = buffer.width * sizeof(uint32_t);
buffer.u.RGBA.size = buffer.u.RGBA.stride * buffer.height;
WSNPRINTF(out_file, sizeof(out_file), "%s/%s%.4d.%s",
dump_folder, prefix, i, suffix);
if (!WebPSaveImage(&buffer, format, (const char*)out_file)) {
WFPRINTF(stderr, "Error while saving image '%s'\n", out_file);
error = 1;
}
WebPFreeDecBuffer(&buffer);
}
ClearAnimatedImage(&image);
}
}
FREE_WARGV_AND_RETURN(error ? 1 : 0);
}

782
external/libwebp/libwebp/examples/anim_util.c vendored
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@ -1,782 +0,0 @@
// Copyright 2015 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Utilities for animated images
#include "./anim_util.h"
#include <assert.h>
#include <math.h>
#include <stdio.h>
#include <string.h>
#if defined(WEBP_HAVE_GIF)
#include <gif_lib.h>
#endif
#include "webp/format_constants.h"
#include "webp/decode.h"
#include "webp/demux.h"
#include "../imageio/imageio_util.h"
#include "./gifdec.h"
#include "./unicode.h"
#include "./unicode_gif.h"
#if defined(_MSC_VER) && _MSC_VER < 1900
#define snprintf _snprintf
#endif
static const int kNumChannels = 4;
// -----------------------------------------------------------------------------
// Common utilities.
#if defined(WEBP_HAVE_GIF)
// Returns true if the frame covers the full canvas.
static int IsFullFrame(int width, int height,
int canvas_width, int canvas_height) {
return (width == canvas_width && height == canvas_height);
}
#endif // WEBP_HAVE_GIF
static int CheckSizeForOverflow(uint64_t size) {
return (size == (size_t)size);
}
static int AllocateFrames(AnimatedImage* const image, uint32_t num_frames) {
uint32_t i;
uint8_t* mem = NULL;
DecodedFrame* frames = NULL;
const uint64_t rgba_size =
(uint64_t)image->canvas_width * kNumChannels * image->canvas_height;
const uint64_t total_size = (uint64_t)num_frames * rgba_size * sizeof(*mem);
const uint64_t total_frame_size = (uint64_t)num_frames * sizeof(*frames);
if (!CheckSizeForOverflow(total_size) ||
!CheckSizeForOverflow(total_frame_size)) {
return 0;
}
mem = (uint8_t*)WebPMalloc((size_t)total_size);
frames = (DecodedFrame*)WebPMalloc((size_t)total_frame_size);
if (mem == NULL || frames == NULL) {
WebPFree(mem);
WebPFree(frames);
return 0;
}
WebPFree(image->raw_mem);
image->num_frames = num_frames;
image->frames = frames;
for (i = 0; i < num_frames; ++i) {
frames[i].rgba = mem + i * rgba_size;
frames[i].duration = 0;
frames[i].is_key_frame = 0;
}
image->raw_mem = mem;
return 1;
}
void ClearAnimatedImage(AnimatedImage* const image) {
if (image != NULL) {
WebPFree(image->raw_mem);
WebPFree(image->frames);
image->num_frames = 0;
image->frames = NULL;
image->raw_mem = NULL;
}
}
#if defined(WEBP_HAVE_GIF)
// Clear the canvas to transparent.
static void ZeroFillCanvas(uint8_t* rgba,
uint32_t canvas_width, uint32_t canvas_height) {
memset(rgba, 0, canvas_width * kNumChannels * canvas_height);
}
// Clear given frame rectangle to transparent.
static void ZeroFillFrameRect(uint8_t* rgba, int rgba_stride, int x_offset,
int y_offset, int width, int height) {
int j;
assert(width * kNumChannels <= rgba_stride);
rgba += y_offset * rgba_stride + x_offset * kNumChannels;
for (j = 0; j < height; ++j) {
memset(rgba, 0, width * kNumChannels);
rgba += rgba_stride;
}
}
// Copy width * height pixels from 'src' to 'dst'.
static void CopyCanvas(const uint8_t* src, uint8_t* dst,
uint32_t width, uint32_t height) {
assert(src != NULL && dst != NULL);
memcpy(dst, src, width * kNumChannels * height);
}
// Copy pixels in the given rectangle from 'src' to 'dst' honoring the 'stride'.
static void CopyFrameRectangle(const uint8_t* src, uint8_t* dst, int stride,
int x_offset, int y_offset,
int width, int height) {
int j;
const int width_in_bytes = width * kNumChannels;
const size_t offset = y_offset * stride + x_offset * kNumChannels;
assert(width_in_bytes <= stride);
src += offset;
dst += offset;
for (j = 0; j < height; ++j) {
memcpy(dst, src, width_in_bytes);
src += stride;
dst += stride;
}
}
#endif // WEBP_HAVE_GIF
// Canonicalize all transparent pixels to transparent black to aid comparison.
static void CleanupTransparentPixels(uint32_t* rgba,
uint32_t width, uint32_t height) {
const uint32_t* const rgba_end = rgba + width * height;
while (rgba < rgba_end) {
const uint8_t alpha = (*rgba >> 24) & 0xff;
if (alpha == 0) {
*rgba = 0;
}
++rgba;
}
}
// Dump frame to a PAM file. Returns true on success.
static int DumpFrame(const char filename[], const char dump_folder[],
uint32_t frame_num, const uint8_t rgba[],
int canvas_width, int canvas_height) {
int ok = 0;
size_t max_len;
int y;
const W_CHAR* base_name = NULL;
W_CHAR* file_name = NULL;
FILE* f = NULL;
const char* row;
if (dump_folder == NULL) dump_folder = (const char*)TO_W_CHAR(".");
base_name = WSTRRCHR(filename, '/');
base_name = (base_name == NULL) ? (const W_CHAR*)filename : base_name + 1;
max_len = WSTRLEN(dump_folder) + 1 + WSTRLEN(base_name)
+ strlen("_frame_") + strlen(".pam") + 8;
file_name = (W_CHAR*)WebPMalloc(max_len * sizeof(*file_name));
if (file_name == NULL) goto End;
if (WSNPRINTF(file_name, max_len, "%s/%s_frame_%d.pam",
(const W_CHAR*)dump_folder, base_name, frame_num) < 0) {
fprintf(stderr, "Error while generating file name\n");
goto End;
}
f = WFOPEN(file_name, "wb");
if (f == NULL) {
WFPRINTF(stderr, "Error opening file for writing: %s\n", file_name);
ok = 0;
goto End;
}
if (fprintf(f, "P7\nWIDTH %d\nHEIGHT %d\n"
"DEPTH 4\nMAXVAL 255\nTUPLTYPE RGB_ALPHA\nENDHDR\n",
canvas_width, canvas_height) < 0) {
WFPRINTF(stderr, "Write error for file %s\n", file_name);
goto End;
}
row = (const char*)rgba;
for (y = 0; y < canvas_height; ++y) {
if (fwrite(row, canvas_width * kNumChannels, 1, f) != 1) {
WFPRINTF(stderr, "Error writing to file: %s\n", file_name);
goto End;
}
row += canvas_width * kNumChannels;
}
ok = 1;
End:
if (f != NULL) fclose(f);
WebPFree(file_name);
return ok;
}
// -----------------------------------------------------------------------------
// WebP Decoding.
// Returns true if this is a valid WebP bitstream.
static int IsWebP(const WebPData* const webp_data) {
return (WebPGetInfo(webp_data->bytes, webp_data->size, NULL, NULL) != 0);
}
// Read animated WebP bitstream 'webp_data' into 'AnimatedImage' struct.
static int ReadAnimatedWebP(const char filename[],
const WebPData* const webp_data,
AnimatedImage* const image, int dump_frames,
const char dump_folder[]) {
int ok = 0;
int dump_ok = 1;
uint32_t frame_index = 0;
int prev_frame_timestamp = 0;
WebPAnimDecoder* dec;
WebPAnimInfo anim_info;
memset(image, 0, sizeof(*image));
dec = WebPAnimDecoderNew(webp_data, NULL);
if (dec == NULL) {
WFPRINTF(stderr, "Error parsing image: %s\n", (const W_CHAR*)filename);
goto End;
}
if (!WebPAnimDecoderGetInfo(dec, &anim_info)) {
fprintf(stderr, "Error getting global info about the animation\n");
goto End;
}
// Animation properties.
image->canvas_width = anim_info.canvas_width;
image->canvas_height = anim_info.canvas_height;
image->loop_count = anim_info.loop_count;
image->bgcolor = anim_info.bgcolor;
// Allocate frames.
if (!AllocateFrames(image, anim_info.frame_count)) goto End;
// Decode frames.
while (WebPAnimDecoderHasMoreFrames(dec)) {
DecodedFrame* curr_frame;
uint8_t* curr_rgba;
uint8_t* frame_rgba;
int timestamp;
if (!WebPAnimDecoderGetNext(dec, &frame_rgba, &timestamp)) {
fprintf(stderr, "Error decoding frame #%u\n", frame_index);
goto End;
}
assert(frame_index < anim_info.frame_count);
curr_frame = &image->frames[frame_index];
curr_rgba = curr_frame->rgba;
curr_frame->duration = timestamp - prev_frame_timestamp;
curr_frame->is_key_frame = 0; // Unused.
memcpy(curr_rgba, frame_rgba,
image->canvas_width * kNumChannels * image->canvas_height);
// Needed only because we may want to compare with GIF later.
CleanupTransparentPixels((uint32_t*)curr_rgba,
image->canvas_width, image->canvas_height);
if (dump_frames && dump_ok) {
dump_ok = DumpFrame(filename, dump_folder, frame_index, curr_rgba,
image->canvas_width, image->canvas_height);
if (!dump_ok) { // Print error once, but continue decode loop.
fprintf(stderr, "Error dumping frames to %s\n", dump_folder);
}
}
++frame_index;
prev_frame_timestamp = timestamp;
}
ok = dump_ok;
if (ok) image->format = ANIM_WEBP;
End:
WebPAnimDecoderDelete(dec);
return ok;
}
// -----------------------------------------------------------------------------
// GIF Decoding.
#if defined(WEBP_HAVE_GIF)
// Returns true if this is a valid GIF bitstream.
static int IsGIF(const WebPData* const data) {
return data->size > GIF_STAMP_LEN &&
(!memcmp(GIF_STAMP, data->bytes, GIF_STAMP_LEN) ||
!memcmp(GIF87_STAMP, data->bytes, GIF_STAMP_LEN) ||
!memcmp(GIF89_STAMP, data->bytes, GIF_STAMP_LEN));
}
// GIFLIB_MAJOR is only defined in libgif >= 4.2.0.
#if defined(GIFLIB_MAJOR) && defined(GIFLIB_MINOR)
# define LOCAL_GIF_VERSION ((GIFLIB_MAJOR << 8) | GIFLIB_MINOR)
# define LOCAL_GIF_PREREQ(maj, min) \
(LOCAL_GIF_VERSION >= (((maj) << 8) | (min)))
#else
# define LOCAL_GIF_VERSION 0
# define LOCAL_GIF_PREREQ(maj, min) 0
#endif
#if !LOCAL_GIF_PREREQ(5, 0)
// Added in v5.0
typedef struct {
int DisposalMode;
#define DISPOSAL_UNSPECIFIED 0 // No disposal specified
#define DISPOSE_DO_NOT 1 // Leave image in place
#define DISPOSE_BACKGROUND 2 // Set area to background color
#define DISPOSE_PREVIOUS 3 // Restore to previous content
int UserInputFlag; // User confirmation required before disposal
int DelayTime; // Pre-display delay in 0.01sec units
int TransparentColor; // Palette index for transparency, -1 if none
#define NO_TRANSPARENT_COLOR -1
} GraphicsControlBlock;
static int DGifExtensionToGCB(const size_t GifExtensionLength,
const GifByteType* GifExtension,
GraphicsControlBlock* gcb) {
if (GifExtensionLength != 4) {
return GIF_ERROR;
}
gcb->DisposalMode = (GifExtension[0] >> 2) & 0x07;
gcb->UserInputFlag = (GifExtension[0] & 0x02) != 0;
gcb->DelayTime = GifExtension[1] | (GifExtension[2] << 8);
if (GifExtension[0] & 0x01) {
gcb->TransparentColor = (int)GifExtension[3];
} else {
gcb->TransparentColor = NO_TRANSPARENT_COLOR;
}
return GIF_OK;
}
static int DGifSavedExtensionToGCB(GifFileType* GifFile, int ImageIndex,
GraphicsControlBlock* gcb) {
int i;
if (ImageIndex < 0 || ImageIndex > GifFile->ImageCount - 1) {
return GIF_ERROR;
}
gcb->DisposalMode = DISPOSAL_UNSPECIFIED;
gcb->UserInputFlag = 0;
gcb->DelayTime = 0;
gcb->TransparentColor = NO_TRANSPARENT_COLOR;
for (i = 0; i < GifFile->SavedImages[ImageIndex].ExtensionBlockCount; i++) {
ExtensionBlock* ep = &GifFile->SavedImages[ImageIndex].ExtensionBlocks[i];
if (ep->Function == GRAPHICS_EXT_FUNC_CODE) {
return DGifExtensionToGCB(
ep->ByteCount, (const GifByteType*)ep->Bytes, gcb);
}
}
return GIF_ERROR;
}
#define CONTINUE_EXT_FUNC_CODE 0x00
// Signature was changed in v5.0
#define DGifOpenFileName(a, b) DGifOpenFileName(a)
#endif // !LOCAL_GIF_PREREQ(5, 0)
// Signature changed in v5.1
#if !LOCAL_GIF_PREREQ(5, 1)
#define DGifCloseFile(a, b) DGifCloseFile(a)
#endif
static int IsKeyFrameGIF(const GifImageDesc* prev_desc, int prev_dispose,
const DecodedFrame* const prev_frame,
int canvas_width, int canvas_height) {
if (prev_frame == NULL) return 1;
if (prev_dispose == DISPOSE_BACKGROUND) {
if (IsFullFrame(prev_desc->Width, prev_desc->Height,
canvas_width, canvas_height)) {
return 1;
}
if (prev_frame->is_key_frame) return 1;
}
return 0;
}
static int GetTransparentIndexGIF(GifFileType* gif) {
GraphicsControlBlock first_gcb;
memset(&first_gcb, 0, sizeof(first_gcb));
DGifSavedExtensionToGCB(gif, 0, &first_gcb);
return first_gcb.TransparentColor;
}
static uint32_t GetBackgroundColorGIF(GifFileType* gif) {
const int transparent_index = GetTransparentIndexGIF(gif);
const ColorMapObject* const color_map = gif->SColorMap;
if (transparent_index != NO_TRANSPARENT_COLOR &&
gif->SBackGroundColor == transparent_index) {
return 0x00000000; // Special case: transparent black.
} else if (color_map == NULL || color_map->Colors == NULL
|| gif->SBackGroundColor >= color_map->ColorCount) {
return 0xffffffff; // Invalid: assume white.
} else {
const GifColorType color = color_map->Colors[gif->SBackGroundColor];
return (0xffu << 24) |
(color.Red << 16) |
(color.Green << 8) |
(color.Blue << 0);
}
}
// Find appropriate app extension and get loop count from the next extension.
// We use Chrome's interpretation of the 'loop_count' semantics:
// if not present -> loop once
// if present and loop_count == 0, return 0 ('infinite').
// if present and loop_count != 0, it's the number of *extra* loops
// so we need to return loop_count + 1 as total loop number.
static uint32_t GetLoopCountGIF(const GifFileType* const gif) {
int i;
for (i = 0; i < gif->ImageCount; ++i) {
const SavedImage* const image = &gif->SavedImages[i];
int j;
for (j = 0; (j + 1) < image->ExtensionBlockCount; ++j) {
const ExtensionBlock* const eb1 = image->ExtensionBlocks + j;
const ExtensionBlock* const eb2 = image->ExtensionBlocks + j + 1;
const char* const signature = (const char*)eb1->Bytes;
const int signature_is_ok =
(eb1->Function == APPLICATION_EXT_FUNC_CODE) &&
(eb1->ByteCount == 11) &&
(!memcmp(signature, "NETSCAPE2.0", 11) ||
!memcmp(signature, "ANIMEXTS1.0", 11));
if (signature_is_ok &&
eb2->Function == CONTINUE_EXT_FUNC_CODE && eb2->ByteCount >= 3 &&
eb2->Bytes[0] == 1) {
const uint32_t extra_loop = ((uint32_t)(eb2->Bytes[2]) << 8) +
((uint32_t)(eb2->Bytes[1]) << 0);
return (extra_loop > 0) ? extra_loop + 1 : 0;
}
}
}
return 1; // Default.
}
// Get duration of 'n'th frame in milliseconds.
static int GetFrameDurationGIF(GifFileType* gif, int n) {
GraphicsControlBlock gcb;
memset(&gcb, 0, sizeof(gcb));
DGifSavedExtensionToGCB(gif, n, &gcb);
return gcb.DelayTime * 10;
}
// Returns true if frame 'target' completely covers 'covered'.
static int CoversFrameGIF(const GifImageDesc* const target,
const GifImageDesc* const covered) {
return target->Left <= covered->Left &&
covered->Left + covered->Width <= target->Left + target->Width &&
target->Top <= covered->Top &&
covered->Top + covered->Height <= target->Top + target->Height;
}
static void RemapPixelsGIF(const uint8_t* const src,
const ColorMapObject* const cmap,
int transparent_color, int len, uint8_t* dst) {
int i;
for (i = 0; i < len; ++i) {
if (src[i] != transparent_color) {
// If a pixel in the current frame is transparent, we don't modify it, so
// that we can see-through the corresponding pixel from an earlier frame.
const GifColorType c = cmap->Colors[src[i]];
dst[4 * i + 0] = c.Red;
dst[4 * i + 1] = c.Green;
dst[4 * i + 2] = c.Blue;
dst[4 * i + 3] = 0xff;
}
}
}
static int ReadFrameGIF(const SavedImage* const gif_image,
const ColorMapObject* cmap, int transparent_color,
int out_stride, uint8_t* const dst) {
const GifImageDesc* image_desc = &gif_image->ImageDesc;
const uint8_t* in;
uint8_t* out;
int j;
if (image_desc->ColorMap) cmap = image_desc->ColorMap;
if (cmap == NULL || cmap->ColorCount != (1 << cmap->BitsPerPixel)) {
fprintf(stderr, "Potentially corrupt color map.\n");
return 0;
}
in = (const uint8_t*)gif_image->RasterBits;
out = dst + image_desc->Top * out_stride + image_desc->Left * kNumChannels;
for (j = 0; j < image_desc->Height; ++j) {
RemapPixelsGIF(in, cmap, transparent_color, image_desc->Width, out);
in += image_desc->Width;
out += out_stride;
}
return 1;
}
// Read animated GIF bitstream from 'filename' into 'AnimatedImage' struct.
static int ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
int dump_frames, const char dump_folder[]) {
uint32_t frame_count;
uint32_t canvas_width, canvas_height;
uint32_t i;
int gif_error;
GifFileType* gif;
gif = DGifOpenFileUnicode((const W_CHAR*)filename, NULL);
if (gif == NULL) {
WFPRINTF(stderr, "Could not read file: %s.\n", (const W_CHAR*)filename);
return 0;
}
gif_error = DGifSlurp(gif);
if (gif_error != GIF_OK) {
WFPRINTF(stderr, "Could not parse image: %s.\n", (const W_CHAR*)filename);
GIFDisplayError(gif, gif_error);
DGifCloseFile(gif, NULL);
return 0;
}
// Animation properties.
image->canvas_width = (uint32_t)gif->SWidth;
image->canvas_height = (uint32_t)gif->SHeight;
if (image->canvas_width > MAX_CANVAS_SIZE ||
image->canvas_height > MAX_CANVAS_SIZE) {
fprintf(stderr, "Invalid canvas dimension: %d x %d\n",
image->canvas_width, image->canvas_height);
DGifCloseFile(gif, NULL);
return 0;
}
image->loop_count = GetLoopCountGIF(gif);
image->bgcolor = GetBackgroundColorGIF(gif);
frame_count = (uint32_t)gif->ImageCount;
if (frame_count == 0) {
DGifCloseFile(gif, NULL);
return 0;
}
if (image->canvas_width == 0 || image->canvas_height == 0) {
image->canvas_width = gif->SavedImages[0].ImageDesc.Width;
image->canvas_height = gif->SavedImages[0].ImageDesc.Height;
gif->SavedImages[0].ImageDesc.Left = 0;
gif->SavedImages[0].ImageDesc.Top = 0;
if (image->canvas_width == 0 || image->canvas_height == 0) {
fprintf(stderr, "Invalid canvas size in GIF.\n");
DGifCloseFile(gif, NULL);
return 0;
}
}
// Allocate frames.
if (!AllocateFrames(image, frame_count)) {
DGifCloseFile(gif, NULL);
return 0;
}
canvas_width = image->canvas_width;
canvas_height = image->canvas_height;
// Decode and reconstruct frames.
for (i = 0; i < frame_count; ++i) {
const int canvas_width_in_bytes = canvas_width * kNumChannels;
const SavedImage* const curr_gif_image = &gif->SavedImages[i];
GraphicsControlBlock curr_gcb;
DecodedFrame* curr_frame;
uint8_t* curr_rgba;
memset(&curr_gcb, 0, sizeof(curr_gcb));
DGifSavedExtensionToGCB(gif, i, &curr_gcb);
curr_frame = &image->frames[i];
curr_rgba = curr_frame->rgba;
curr_frame->duration = GetFrameDurationGIF(gif, i);
// Force frames with a small or no duration to 100ms to be consistent
// with web browsers and other transcoding tools (like gif2webp itself).
if (curr_frame->duration <= 10) curr_frame->duration = 100;
if (i == 0) { // Initialize as transparent.
curr_frame->is_key_frame = 1;
ZeroFillCanvas(curr_rgba, canvas_width, canvas_height);
} else {
DecodedFrame* const prev_frame = &image->frames[i - 1];
const GifImageDesc* const prev_desc = &gif->SavedImages[i - 1].ImageDesc;
GraphicsControlBlock prev_gcb;
memset(&prev_gcb, 0, sizeof(prev_gcb));
DGifSavedExtensionToGCB(gif, i - 1, &prev_gcb);
curr_frame->is_key_frame =
IsKeyFrameGIF(prev_desc, prev_gcb.DisposalMode, prev_frame,
canvas_width, canvas_height);
if (curr_frame->is_key_frame) { // Initialize as transparent.
ZeroFillCanvas(curr_rgba, canvas_width, canvas_height);
} else {
int prev_frame_disposed, curr_frame_opaque;
int prev_frame_completely_covered;
// Initialize with previous canvas.
uint8_t* const prev_rgba = image->frames[i - 1].rgba;
CopyCanvas(prev_rgba, curr_rgba, canvas_width, canvas_height);
// Dispose previous frame rectangle.
prev_frame_disposed =
(prev_gcb.DisposalMode == DISPOSE_BACKGROUND ||
prev_gcb.DisposalMode == DISPOSE_PREVIOUS);
curr_frame_opaque =
(curr_gcb.TransparentColor == NO_TRANSPARENT_COLOR);
prev_frame_completely_covered =
curr_frame_opaque &&
CoversFrameGIF(&curr_gif_image->ImageDesc, prev_desc);
if (prev_frame_disposed && !prev_frame_completely_covered) {
switch (prev_gcb.DisposalMode) {
case DISPOSE_BACKGROUND: {
ZeroFillFrameRect(curr_rgba, canvas_width_in_bytes,
prev_desc->Left, prev_desc->Top,
prev_desc->Width, prev_desc->Height);
break;
}
case DISPOSE_PREVIOUS: {
int src_frame_num = i - 2;
while (src_frame_num >= 0) {
GraphicsControlBlock src_frame_gcb;
memset(&src_frame_gcb, 0, sizeof(src_frame_gcb));
DGifSavedExtensionToGCB(gif, src_frame_num, &src_frame_gcb);
if (src_frame_gcb.DisposalMode != DISPOSE_PREVIOUS) break;
--src_frame_num;
}
if (src_frame_num >= 0) {
// Restore pixels inside previous frame rectangle to
// corresponding pixels in source canvas.
uint8_t* const src_frame_rgba =
image->frames[src_frame_num].rgba;
CopyFrameRectangle(src_frame_rgba, curr_rgba,
canvas_width_in_bytes,
prev_desc->Left, prev_desc->Top,
prev_desc->Width, prev_desc->Height);
} else {
// Source canvas doesn't exist. So clear previous frame
// rectangle to background.
ZeroFillFrameRect(curr_rgba, canvas_width_in_bytes,
prev_desc->Left, prev_desc->Top,
prev_desc->Width, prev_desc->Height);
}
break;
}
default:
break; // Nothing to do.
}
}
}
}
// Decode current frame.
if (!ReadFrameGIF(curr_gif_image, gif->SColorMap, curr_gcb.TransparentColor,
canvas_width_in_bytes, curr_rgba)) {
DGifCloseFile(gif, NULL);
return 0;
}
if (dump_frames) {
if (!DumpFrame(filename, dump_folder, i, curr_rgba,
canvas_width, canvas_height)) {
DGifCloseFile(gif, NULL);
return 0;
}
}
}
image->format = ANIM_GIF;
DGifCloseFile(gif, NULL);
return 1;
}
#else
static int IsGIF(const WebPData* const data) {
(void)data;
return 0;
}
static int ReadAnimatedGIF(const char filename[], AnimatedImage* const image,
int dump_frames, const char dump_folder[]) {
(void)filename;
(void)image;
(void)dump_frames;
(void)dump_folder;
fprintf(stderr, "GIF support not compiled. Please install the libgif-dev "
"package before building.\n");
return 0;
}
#endif // WEBP_HAVE_GIF
// -----------------------------------------------------------------------------
int ReadAnimatedImage(const char filename[], AnimatedImage* const image,
int dump_frames, const char dump_folder[]) {
int ok = 0;
WebPData webp_data;
WebPDataInit(&webp_data);
memset(image, 0, sizeof(*image));
if (!ImgIoUtilReadFile(filename, &webp_data.bytes, &webp_data.size)) {
WFPRINTF(stderr, "Error reading file: %s\n", (const W_CHAR*)filename);
return 0;
}
if (IsWebP(&webp_data)) {
ok = ReadAnimatedWebP(filename, &webp_data, image, dump_frames,
dump_folder);
} else if (IsGIF(&webp_data)) {
ok = ReadAnimatedGIF(filename, image, dump_frames, dump_folder);
} else {
WFPRINTF(stderr,
"Unknown file type: %s. Supported file types are WebP and GIF\n",
(const W_CHAR*)filename);
ok = 0;
}
if (!ok) ClearAnimatedImage(image);
WebPDataClear(&webp_data);
return ok;
}
static void Accumulate(double v1, double v2, double* const max_diff,
double* const sse) {
const double diff = fabs(v1 - v2);
if (diff > *max_diff) *max_diff = diff;
*sse += diff * diff;
}
void GetDiffAndPSNR(const uint8_t rgba1[], const uint8_t rgba2[],
uint32_t width, uint32_t height, int premultiply,
int* const max_diff, double* const psnr) {
const uint32_t stride = width * kNumChannels;
const int kAlphaChannel = kNumChannels - 1;
double f_max_diff = 0.;
double sse = 0.;
uint32_t x, y;
for (y = 0; y < height; ++y) {
for (x = 0; x < stride; x += kNumChannels) {
int k;
const size_t offset = (size_t)y * stride + x;
const int alpha1 = rgba1[offset + kAlphaChannel];
const int alpha2 = rgba2[offset + kAlphaChannel];
Accumulate(alpha1, alpha2, &f_max_diff, &sse);
if (!premultiply) {
for (k = 0; k < kAlphaChannel; ++k) {
Accumulate(rgba1[offset + k], rgba2[offset + k], &f_max_diff, &sse);
}
} else {
// premultiply R/G/B channels with alpha value
for (k = 0; k < kAlphaChannel; ++k) {
Accumulate(rgba1[offset + k] * alpha1 / 255.,
rgba2[offset + k] * alpha2 / 255.,
&f_max_diff, &sse);
}
}
}
}
*max_diff = (int)f_max_diff;
if (*max_diff == 0) {
*psnr = 99.; // PSNR when images are identical.
} else {
sse /= stride * height;
*psnr = 4.3429448 * log(255. * 255. / sse);
}
}
void GetAnimatedImageVersions(int* const decoder_version,
int* const demux_version) {
*decoder_version = WebPGetDecoderVersion();
*demux_version = WebPGetDemuxVersion();
}

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// Copyright 2015 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Utilities for animated images
#ifndef WEBP_EXAMPLES_ANIM_UTIL_H_
#define WEBP_EXAMPLES_ANIM_UTIL_H_
#ifdef HAVE_CONFIG_H
#include "webp/config.h"
#endif
#include "webp/types.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef enum {
ANIM_GIF,
ANIM_WEBP
} AnimatedFileFormat;
typedef struct {
uint8_t* rgba; // Decoded and reconstructed full frame.
int duration; // Frame duration in milliseconds.
int is_key_frame; // True if this frame is a key-frame.
} DecodedFrame;
typedef struct {
AnimatedFileFormat format;
uint32_t canvas_width;
uint32_t canvas_height;
uint32_t bgcolor;
uint32_t loop_count;
DecodedFrame* frames;
uint32_t num_frames;
void* raw_mem;
} AnimatedImage;
// Deallocate everything in 'image' (but not the object itself).
void ClearAnimatedImage(AnimatedImage* const image);
// Read animated image file into 'AnimatedImage' struct.
// If 'dump_frames' is true, dump frames to 'dump_folder'.
// Previous content of 'image' is obliterated.
// Upon successful return, content of 'image' must be deleted by
// calling 'ClearAnimatedImage'.
int ReadAnimatedImage(const char filename[], AnimatedImage* const image,
int dump_frames, const char dump_folder[]);
// Given two RGBA buffers, calculate max pixel difference and PSNR.
// If 'premultiply' is true, R/G/B values will be pre-multiplied by the
// transparency before comparison.
void GetDiffAndPSNR(const uint8_t rgba1[], const uint8_t rgba2[],
uint32_t width, uint32_t height, int premultiply,
int* const max_diff, double* const psnr);
// Return library versions used by anim_util.
void GetAnimatedImageVersions(int* const decoder_version,
int* const demux_version);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_EXAMPLES_ANIM_UTIL_H_

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// Copyright 2010 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Command-line tool for decoding a WebP image.
//
// Author: Skal (pascal.massimino@gmail.com)
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_CONFIG_H
#include "webp/config.h"
#endif
#include "../examples/example_util.h"
#include "../imageio/image_enc.h"
#include "../imageio/webpdec.h"
#include "./stopwatch.h"
#include "./unicode.h"
static int verbose = 0;
static int quiet = 0;
#ifndef WEBP_DLL
#ifdef __cplusplus
extern "C" {
#endif
extern void* VP8GetCPUInfo; // opaque forward declaration.
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_DLL
static int SaveOutput(const WebPDecBuffer* const buffer,
WebPOutputFileFormat format, const char* const out_file) {
const int use_stdout = (out_file != NULL) && !WSTRCMP(out_file, "-");
int ok = 1;
Stopwatch stop_watch;
if (verbose) {
StopwatchReset(&stop_watch);
}
ok = WebPSaveImage(buffer, format, out_file);
if (ok) {
if (!quiet) {
if (use_stdout) {
fprintf(stderr, "Saved to stdout\n");
} else {
WFPRINTF(stderr, "Saved file %s\n", (const W_CHAR*)out_file);
}
}
if (verbose) {
const double write_time = StopwatchReadAndReset(&stop_watch);
fprintf(stderr, "Time to write output: %.3fs\n", write_time);
}
} else {
if (use_stdout) {
fprintf(stderr, "Error writing to stdout !!\n");
} else {
WFPRINTF(stderr, "Error writing file %s !!\n", (const W_CHAR*)out_file);
}
}
return ok;
}
static void Help(void) {
printf("Usage: dwebp in_file [options] [-o out_file]\n\n"
"Decodes the WebP image file to PNG format [Default].\n"
"Note: Animated WebP files are not supported.\n\n"
"Use following options to convert into alternate image formats:\n"
" -pam ......... save the raw RGBA samples as a color PAM\n"
" -ppm ......... save the raw RGB samples as a color PPM\n"
" -bmp ......... save as uncompressed BMP format\n"
" -tiff ........ save as uncompressed TIFF format\n"
" -pgm ......... save the raw YUV samples as a grayscale PGM\n"
" file with IMC4 layout\n"
" -yuv ......... save the raw YUV samples in flat layout\n"
"\n"
" Other options are:\n"
" -version ..... print version number and exit\n"
" -nofancy ..... don't use the fancy YUV420 upscaler\n"
" -nofilter .... disable in-loop filtering\n"
" -nodither .... disable dithering\n"
" -dither <d> .. dithering strength (in 0..100)\n"
" -alpha_dither use alpha-plane dithering if needed\n"
" -mt .......... use multi-threading\n"
" -crop <x> <y> <w> <h> ... crop output with the given rectangle\n"
" -resize <w> <h> ......... resize output (*after* any cropping)\n"
" -flip ........ flip the output vertically\n"
" -alpha ....... only save the alpha plane\n"
" -incremental . use incremental decoding (useful for tests)\n"
" -h ........... this help message\n"
" -v ........... verbose (e.g. print encoding/decoding times)\n"
" -quiet ....... quiet mode, don't print anything\n"
#ifndef WEBP_DLL
" -noasm ....... disable all assembly optimizations\n"
#endif
);
}
static const char* const kFormatType[] = {
"unspecified", "lossy", "lossless"
};
static uint8_t* AllocateExternalBuffer(WebPDecoderConfig* config,
WebPOutputFileFormat format,
int use_external_memory) {
uint8_t* external_buffer = NULL;
WebPDecBuffer* const output_buffer = &config->output;
int w = config->input.width;
int h = config->input.height;
if (config->options.use_scaling) {
w = config->options.scaled_width;
h = config->options.scaled_height;
} else if (config->options.use_cropping) {
w = config->options.crop_width;
h = config->options.crop_height;
}
if (format >= RGB && format <= rgbA_4444) {
const int bpp = (format == RGB || format == BGR) ? 3
: (format == RGBA_4444 || format == rgbA_4444 ||
format == RGB_565) ? 2
: 4;
uint32_t stride = bpp * w + 7; // <- just for exercising
external_buffer = (uint8_t*)WebPMalloc(stride * h);
if (external_buffer == NULL) return NULL;
output_buffer->u.RGBA.stride = stride;
output_buffer->u.RGBA.size = stride * h;
output_buffer->u.RGBA.rgba = external_buffer;
} else { // YUV and YUVA
const int has_alpha = WebPIsAlphaMode(output_buffer->colorspace);
uint8_t* tmp;
uint32_t stride = w + 3;
uint32_t uv_stride = (w + 1) / 2 + 13;
uint32_t total_size = stride * h * (has_alpha ? 2 : 1)
+ 2 * uv_stride * (h + 1) / 2;
assert(format >= YUV && format <= YUVA);
external_buffer = (uint8_t*)WebPMalloc(total_size);
if (external_buffer == NULL) return NULL;
tmp = external_buffer;
output_buffer->u.YUVA.y = tmp;
output_buffer->u.YUVA.y_stride = stride;
output_buffer->u.YUVA.y_size = stride * h;
tmp += output_buffer->u.YUVA.y_size;
if (has_alpha) {
output_buffer->u.YUVA.a = tmp;
output_buffer->u.YUVA.a_stride = stride;
output_buffer->u.YUVA.a_size = stride * h;
tmp += output_buffer->u.YUVA.a_size;
} else {
output_buffer->u.YUVA.a = NULL;
output_buffer->u.YUVA.a_stride = 0;
}
output_buffer->u.YUVA.u = tmp;
output_buffer->u.YUVA.u_stride = uv_stride;
output_buffer->u.YUVA.u_size = uv_stride * (h + 1) / 2;
tmp += output_buffer->u.YUVA.u_size;
output_buffer->u.YUVA.v = tmp;
output_buffer->u.YUVA.v_stride = uv_stride;
output_buffer->u.YUVA.v_size = uv_stride * (h + 1) / 2;
tmp += output_buffer->u.YUVA.v_size;
assert(tmp <= external_buffer + total_size);
}
output_buffer->is_external_memory = use_external_memory;
return external_buffer;
}
int main(int argc, const char* argv[]) {
int ok = 0;
const char* in_file = NULL;
const char* out_file = NULL;
WebPDecoderConfig config;
WebPDecBuffer* const output_buffer = &config.output;
WebPBitstreamFeatures* const bitstream = &config.input;
WebPOutputFileFormat format = PNG;
uint8_t* external_buffer = NULL;
int use_external_memory = 0;
const uint8_t* data = NULL;
int incremental = 0;
int c;
INIT_WARGV(argc, argv);
if (!WebPInitDecoderConfig(&config)) {
fprintf(stderr, "Library version mismatch!\n");
FREE_WARGV_AND_RETURN(-1);
}
for (c = 1; c < argc; ++c) {
int parse_error = 0;
if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) {
Help();
FREE_WARGV_AND_RETURN(0);
} else if (!strcmp(argv[c], "-o") && c < argc - 1) {
out_file = (const char*)GET_WARGV(argv, ++c);
} else if (!strcmp(argv[c], "-alpha")) {
format = ALPHA_PLANE_ONLY;
} else if (!strcmp(argv[c], "-nofancy")) {
config.options.no_fancy_upsampling = 1;
} else if (!strcmp(argv[c], "-nofilter")) {
config.options.bypass_filtering = 1;
} else if (!strcmp(argv[c], "-pam")) {
format = PAM;
} else if (!strcmp(argv[c], "-ppm")) {
format = PPM;
} else if (!strcmp(argv[c], "-bmp")) {
format = BMP;
} else if (!strcmp(argv[c], "-tiff")) {
format = TIFF;
} else if (!strcmp(argv[c], "-quiet")) {
quiet = 1;
} else if (!strcmp(argv[c], "-version")) {
const int version = WebPGetDecoderVersion();
printf("%d.%d.%d\n",
(version >> 16) & 0xff, (version >> 8) & 0xff, version & 0xff);
FREE_WARGV_AND_RETURN(0);
} else if (!strcmp(argv[c], "-pgm")) {
format = PGM;
} else if (!strcmp(argv[c], "-yuv")) {
format = RAW_YUV;
} else if (!strcmp(argv[c], "-pixel_format") && c < argc - 1) {
const char* const fmt = argv[++c];
if (!strcmp(fmt, "RGB")) format = RGB;
else if (!strcmp(fmt, "RGBA")) format = RGBA;
else if (!strcmp(fmt, "BGR")) format = BGR;
else if (!strcmp(fmt, "BGRA")) format = BGRA;
else if (!strcmp(fmt, "ARGB")) format = ARGB;
else if (!strcmp(fmt, "RGBA_4444")) format = RGBA_4444;
else if (!strcmp(fmt, "RGB_565")) format = RGB_565;
else if (!strcmp(fmt, "rgbA")) format = rgbA;
else if (!strcmp(fmt, "bgrA")) format = bgrA;
else if (!strcmp(fmt, "Argb")) format = Argb;
else if (!strcmp(fmt, "rgbA_4444")) format = rgbA_4444;
else if (!strcmp(fmt, "YUV")) format = YUV;
else if (!strcmp(fmt, "YUVA")) format = YUVA;
else {
fprintf(stderr, "Can't parse pixel_format %s\n", fmt);
parse_error = 1;
}
} else if (!strcmp(argv[c], "-external_memory") && c < argc - 1) {
use_external_memory = ExUtilGetInt(argv[++c], 0, &parse_error);
parse_error |= (use_external_memory > 2 || use_external_memory < 0);
if (parse_error) {
fprintf(stderr, "Can't parse 'external_memory' value %s\n", argv[c]);
}
} else if (!strcmp(argv[c], "-mt")) {
config.options.use_threads = 1;
} else if (!strcmp(argv[c], "-alpha_dither")) {
config.options.alpha_dithering_strength = 100;
} else if (!strcmp(argv[c], "-nodither")) {
config.options.dithering_strength = 0;
} else if (!strcmp(argv[c], "-dither") && c < argc - 1) {
config.options.dithering_strength =
ExUtilGetInt(argv[++c], 0, &parse_error);
} else if (!strcmp(argv[c], "-crop") && c < argc - 4) {
config.options.use_cropping = 1;
config.options.crop_left = ExUtilGetInt(argv[++c], 0, &parse_error);
config.options.crop_top = ExUtilGetInt(argv[++c], 0, &parse_error);
config.options.crop_width = ExUtilGetInt(argv[++c], 0, &parse_error);
config.options.crop_height = ExUtilGetInt(argv[++c], 0, &parse_error);
} else if ((!strcmp(argv[c], "-scale") || !strcmp(argv[c], "-resize")) &&
c < argc - 2) { // '-scale' is left for compatibility
config.options.use_scaling = 1;
config.options.scaled_width = ExUtilGetInt(argv[++c], 0, &parse_error);
config.options.scaled_height = ExUtilGetInt(argv[++c], 0, &parse_error);
} else if (!strcmp(argv[c], "-flip")) {
config.options.flip = 1;
} else if (!strcmp(argv[c], "-v")) {
verbose = 1;
#ifndef WEBP_DLL
} else if (!strcmp(argv[c], "-noasm")) {
VP8GetCPUInfo = NULL;
#endif
} else if (!strcmp(argv[c], "-incremental")) {
incremental = 1;
} else if (!strcmp(argv[c], "--")) {
if (c < argc - 1) in_file = (const char*)GET_WARGV(argv, ++c);
break;
} else if (argv[c][0] == '-') {
fprintf(stderr, "Unknown option '%s'\n", argv[c]);
Help();
FREE_WARGV_AND_RETURN(-1);
} else {
in_file = (const char*)GET_WARGV(argv, c);
}
if (parse_error) {
Help();
FREE_WARGV_AND_RETURN(-1);
}
}
if (in_file == NULL) {
fprintf(stderr, "missing input file!!\n");
Help();
FREE_WARGV_AND_RETURN(-1);
}
if (quiet) verbose = 0;
{
VP8StatusCode status = VP8_STATUS_OK;
size_t data_size = 0;
if (!LoadWebP(in_file, &data, &data_size, bitstream)) {
FREE_WARGV_AND_RETURN(-1);
}
switch (format) {
case PNG:
#ifdef HAVE_WINCODEC_H
output_buffer->colorspace = bitstream->has_alpha ? MODE_BGRA : MODE_BGR;
#else
output_buffer->colorspace = bitstream->has_alpha ? MODE_RGBA : MODE_RGB;
#endif
break;
case PAM:
output_buffer->colorspace = MODE_RGBA;
break;
case PPM:
output_buffer->colorspace = MODE_RGB; // drops alpha for PPM
break;
case BMP:
output_buffer->colorspace = bitstream->has_alpha ? MODE_BGRA : MODE_BGR;
break;
case TIFF:
output_buffer->colorspace = bitstream->has_alpha ? MODE_RGBA : MODE_RGB;
break;
case PGM:
case RAW_YUV:
output_buffer->colorspace = bitstream->has_alpha ? MODE_YUVA : MODE_YUV;
break;
case ALPHA_PLANE_ONLY:
output_buffer->colorspace = MODE_YUVA;
break;
// forced modes:
case RGB: output_buffer->colorspace = MODE_RGB; break;
case RGBA: output_buffer->colorspace = MODE_RGBA; break;
case BGR: output_buffer->colorspace = MODE_BGR; break;
case BGRA: output_buffer->colorspace = MODE_BGRA; break;
case ARGB: output_buffer->colorspace = MODE_ARGB; break;
case RGBA_4444: output_buffer->colorspace = MODE_RGBA_4444; break;
case RGB_565: output_buffer->colorspace = MODE_RGB_565; break;
case rgbA: output_buffer->colorspace = MODE_rgbA; break;
case bgrA: output_buffer->colorspace = MODE_bgrA; break;
case Argb: output_buffer->colorspace = MODE_Argb; break;
case rgbA_4444: output_buffer->colorspace = MODE_rgbA_4444; break;
case YUV: output_buffer->colorspace = MODE_YUV; break;
case YUVA: output_buffer->colorspace = MODE_YUVA; break;
default: goto Exit;
}
if (use_external_memory > 0 && format >= RGB) {
external_buffer = AllocateExternalBuffer(&config, format,
use_external_memory);
if (external_buffer == NULL) goto Exit;
}
{
Stopwatch stop_watch;
if (verbose) StopwatchReset(&stop_watch);
if (incremental) {
status = DecodeWebPIncremental(data, data_size, &config);
} else {
status = DecodeWebP(data, data_size, &config);
}
if (verbose) {
const double decode_time = StopwatchReadAndReset(&stop_watch);
fprintf(stderr, "Time to decode picture: %.3fs\n", decode_time);
}
}
ok = (status == VP8_STATUS_OK);
if (!ok) {
PrintWebPError(in_file, status);
goto Exit;
}
}
if (out_file != NULL) {
if (!quiet) {
WFPRINTF(stderr, "Decoded %s.", (const W_CHAR*)in_file);
fprintf(stderr, " Dimensions: %d x %d %s. Format: %s. Now saving...\n",
output_buffer->width, output_buffer->height,
bitstream->has_alpha ? " (with alpha)" : "",
kFormatType[bitstream->format]);
}
ok = SaveOutput(output_buffer, format, out_file);
} else {
if (!quiet) {
WFPRINTF(stderr, "File %s can be decoded ", (const W_CHAR*)in_file);
fprintf(stderr, "(dimensions: %d x %d %s. Format: %s).\n",
output_buffer->width, output_buffer->height,
bitstream->has_alpha ? " (with alpha)" : "",
kFormatType[bitstream->format]);
fprintf(stderr, "Nothing written; "
"use -o flag to save the result as e.g. PNG.\n");
}
}
Exit:
WebPFreeDecBuffer(output_buffer);
WebPFree((void*)external_buffer);
WebPFree((void*)data);
FREE_WARGV_AND_RETURN(ok ? 0 : -1);
}
//------------------------------------------------------------------------------

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@ -1,139 +0,0 @@
// Copyright 2012 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Utility functions used by the example programs.
//
#include "./example_util.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "webp/mux_types.h"
#include "../imageio/imageio_util.h"
//------------------------------------------------------------------------------
// String parsing
uint32_t ExUtilGetUInt(const char* const v, int base, int* const error) {
char* end = NULL;
const uint32_t n = (v != NULL) ? (uint32_t)strtoul(v, &end, base) : 0u;
if (end == v && error != NULL && !*error) {
*error = 1;
fprintf(stderr, "Error! '%s' is not an integer.\n",
(v != NULL) ? v : "(null)");
}
return n;
}
int ExUtilGetInt(const char* const v, int base, int* const error) {
return (int)ExUtilGetUInt(v, base, error);
}
int ExUtilGetInts(const char* v, int base, int max_output, int output[]) {
int n, error = 0;
for (n = 0; v != NULL && n < max_output; ++n) {
const int value = ExUtilGetInt(v, base, &error);
if (error) return -1;
output[n] = value;
v = strchr(v, ',');
if (v != NULL) ++v; // skip over the trailing ','
}
return n;
}
float ExUtilGetFloat(const char* const v, int* const error) {
char* end = NULL;
const float f = (v != NULL) ? (float)strtod(v, &end) : 0.f;
if (end == v && error != NULL && !*error) {
*error = 1;
fprintf(stderr, "Error! '%s' is not a floating point number.\n",
(v != NULL) ? v : "(null)");
}
return f;
}
//------------------------------------------------------------------------------
static void ResetCommandLineArguments(int argc, const char* argv[],
CommandLineArguments* const args) {
assert(args != NULL);
args->argc_ = argc;
args->argv_ = argv;
args->own_argv_ = 0;
WebPDataInit(&args->argv_data_);
}
void ExUtilDeleteCommandLineArguments(CommandLineArguments* const args) {
if (args != NULL) {
if (args->own_argv_) {
WebPFree((void*)args->argv_);
WebPDataClear(&args->argv_data_);
}
ResetCommandLineArguments(0, NULL, args);
}
}
#define MAX_ARGC 16384
int ExUtilInitCommandLineArguments(int argc, const char* argv[],
CommandLineArguments* const args) {
if (args == NULL || argv == NULL) return 0;
ResetCommandLineArguments(argc, argv, args);
if (argc == 1 && argv[0][0] != '-') {
char* cur;
const char sep[] = " \t\r\n\f\v";
#if defined(_WIN32) && defined(_UNICODE)
fprintf(stderr,
"Error: Reading arguments from a file is a feature unavailable "
"with Unicode binaries.\n");
return 0;
#endif
if (!ExUtilReadFileToWebPData(argv[0], &args->argv_data_)) {
return 0;
}
args->own_argv_ = 1;
args->argv_ = (const char**)WebPMalloc(MAX_ARGC * sizeof(*args->argv_));
if (args->argv_ == NULL) {
ExUtilDeleteCommandLineArguments(args);
return 0;
}
argc = 0;
for (cur = strtok((char*)args->argv_data_.bytes, sep);
cur != NULL;
cur = strtok(NULL, sep)) {
if (argc == MAX_ARGC) {
fprintf(stderr, "ERROR: Arguments limit %d reached\n", MAX_ARGC);
ExUtilDeleteCommandLineArguments(args);
return 0;
}
assert(strlen(cur) != 0);
args->argv_[argc++] = cur;
}
args->argc_ = argc;
}
return 1;
}
//------------------------------------------------------------------------------
int ExUtilReadFileToWebPData(const char* const filename,
WebPData* const webp_data) {
const uint8_t* data;
size_t size;
if (webp_data == NULL) return 0;
if (!ImgIoUtilReadFile(filename, &data, &size)) return 0;
webp_data->bytes = data;
webp_data->size = size;
return 1;
}

70
external/libwebp/libwebp/examples/example_util.h vendored
View File

@ -1,70 +0,0 @@
// Copyright 2012 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Utility functions used by the example programs.
//
#ifndef WEBP_EXAMPLES_EXAMPLE_UTIL_H_
#define WEBP_EXAMPLES_EXAMPLE_UTIL_H_
#include "webp/types.h"
#include "webp/mux_types.h"
#ifdef __cplusplus
extern "C" {
#endif
//------------------------------------------------------------------------------
// String parsing
// Parses 'v' using strto(ul|l|d)(). If error is non-NULL, '*error' is set to
// true on failure while on success it is left unmodified to allow chaining of
// calls. An error is only printed on the first occurrence.
uint32_t ExUtilGetUInt(const char* const v, int base, int* const error);
int ExUtilGetInt(const char* const v, int base, int* const error);
float ExUtilGetFloat(const char* const v, int* const error);
// This variant of ExUtilGetInt() will parse multiple integers from a
// comma-separated list. Up to 'max_output' integers are parsed.
// The result is placed in the output[] array, and the number of integers
// actually parsed is returned, or -1 if an error occurred.
int ExUtilGetInts(const char* v, int base, int max_output, int output[]);
// Reads a file named 'filename' into a WebPData structure. The content of
// webp_data is overwritten. Returns false in case of error.
int ExUtilReadFileToWebPData(const char* const filename,
WebPData* const webp_data);
//------------------------------------------------------------------------------
// Command-line arguments
typedef struct {
int argc_;
const char** argv_;
WebPData argv_data_;
int own_argv_;
} CommandLineArguments;
// Initializes the structure from the command-line parameters. If there is
// only one parameter and it does not start with a '-', then it is assumed to
// be a file name. This file will be read and tokenized into command-line
// arguments. The content of 'args' is overwritten.
// Returns false in case of error (memory allocation failure, non
// existing file, too many arguments, ...).
int ExUtilInitCommandLineArguments(int argc, const char* argv[],
CommandLineArguments* const args);
// Deallocate all memory and reset 'args'.
void ExUtilDeleteCommandLineArguments(CommandLineArguments* const args);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_EXAMPLES_EXAMPLE_UTIL_H_

609
external/libwebp/libwebp/examples/gif2webp.c vendored
View File

@ -1,609 +0,0 @@
// Copyright 2012 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// simple tool to convert animated GIFs to WebP
//
// Authors: Skal (pascal.massimino@gmail.com)
// Urvang (urvang@google.com)
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_CONFIG_H
#include "webp/config.h"
#endif
#ifdef WEBP_HAVE_GIF
#if defined(HAVE_UNISTD_H) && HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <gif_lib.h>
#include "webp/encode.h"
#include "webp/mux.h"
#include "../examples/example_util.h"
#include "../imageio/imageio_util.h"
#include "./gifdec.h"
#include "./unicode.h"
#include "./unicode_gif.h"
#if !defined(STDIN_FILENO)
#define STDIN_FILENO 0
#endif
//------------------------------------------------------------------------------
static int transparent_index = GIF_INDEX_INVALID; // Opaque by default.
static const char* const kErrorMessages[-WEBP_MUX_NOT_ENOUGH_DATA + 1] = {
"WEBP_MUX_NOT_FOUND", "WEBP_MUX_INVALID_ARGUMENT", "WEBP_MUX_BAD_DATA",
"WEBP_MUX_MEMORY_ERROR", "WEBP_MUX_NOT_ENOUGH_DATA"
};
static const char* ErrorString(WebPMuxError err) {
assert(err <= WEBP_MUX_NOT_FOUND && err >= WEBP_MUX_NOT_ENOUGH_DATA);
return kErrorMessages[-err];
}
enum {
METADATA_ICC = (1 << 0),
METADATA_XMP = (1 << 1),
METADATA_ALL = METADATA_ICC | METADATA_XMP
};
//------------------------------------------------------------------------------
static void Help(void) {
printf("Usage:\n");
printf(" gif2webp [options] gif_file -o webp_file\n");
printf("Options:\n");
printf(" -h / -help ............. this help\n");
printf(" -lossy ................. encode image using lossy compression\n");
printf(" -mixed ................. for each frame in the image, pick lossy\n"
" or lossless compression heuristically\n");
printf(" -q <float> ............. quality factor (0:small..100:big)\n");
printf(" -m <int> ............... compression method (0=fast, 6=slowest)\n");
printf(" -min_size .............. minimize output size (default:off)\n"
" lossless compression by default; can be\n"
" combined with -q, -m, -lossy or -mixed\n"
" options\n");
printf(" -kmin <int> ............ min distance between key frames\n");
printf(" -kmax <int> ............ max distance between key frames\n");
printf(" -f <int> ............... filter strength (0=off..100)\n");
printf(" -metadata <string> ..... comma separated list of metadata to\n");
printf(" ");
printf("copy from the input to the output if present\n");
printf(" ");
printf("Valid values: all, none, icc, xmp (default)\n");
printf(" -loop_compatibility .... use compatibility mode for Chrome\n");
printf(" version prior to M62 (inclusive)\n");
printf(" -mt .................... use multi-threading if available\n");
printf("\n");
printf(" -version ............... print version number and exit\n");
printf(" -v ..................... verbose\n");
printf(" -quiet ................. don't print anything\n");
printf("\n");
}
//------------------------------------------------------------------------------
int main(int argc, const char* argv[]) {
int verbose = 0;
int gif_error = GIF_ERROR;
WebPMuxError err = WEBP_MUX_OK;
int ok = 0;
const W_CHAR* in_file = NULL, *out_file = NULL;
GifFileType* gif = NULL;
int frame_duration = 0;
int frame_timestamp = 0;
GIFDisposeMethod orig_dispose = GIF_DISPOSE_NONE;
WebPPicture frame; // Frame rectangle only (not disposed).
WebPPicture curr_canvas; // Not disposed.
WebPPicture prev_canvas; // Disposed.
WebPAnimEncoder* enc = NULL;
WebPAnimEncoderOptions enc_options;
WebPConfig config;
int frame_number = 0; // Whether we are processing the first frame.
int done;
int c;
int quiet = 0;
WebPData webp_data;
int keep_metadata = METADATA_XMP; // ICC not output by default.
WebPData icc_data;
int stored_icc = 0; // Whether we have already stored an ICC profile.
WebPData xmp_data;
int stored_xmp = 0; // Whether we have already stored an XMP profile.
int loop_count = 0; // default: infinite
int stored_loop_count = 0; // Whether we have found an explicit loop count.
int loop_compatibility = 0;
WebPMux* mux = NULL;
int default_kmin = 1; // Whether to use default kmin value.
int default_kmax = 1;
INIT_WARGV(argc, argv);
if (!WebPConfigInit(&config) || !WebPAnimEncoderOptionsInit(&enc_options) ||
!WebPPictureInit(&frame) || !WebPPictureInit(&curr_canvas) ||
!WebPPictureInit(&prev_canvas)) {
fprintf(stderr, "Error! Version mismatch!\n");
FREE_WARGV_AND_RETURN(-1);
}
config.lossless = 1; // Use lossless compression by default.
WebPDataInit(&webp_data);
WebPDataInit(&icc_data);
WebPDataInit(&xmp_data);
if (argc == 1) {
Help();
FREE_WARGV_AND_RETURN(0);
}
for (c = 1; c < argc; ++c) {
int parse_error = 0;
if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) {
Help();
FREE_WARGV_AND_RETURN(0);
} else if (!strcmp(argv[c], "-o") && c < argc - 1) {
out_file = GET_WARGV(argv, ++c);
} else if (!strcmp(argv[c], "-lossy")) {
config.lossless = 0;
} else if (!strcmp(argv[c], "-mixed")) {
enc_options.allow_mixed = 1;
config.lossless = 0;
} else if (!strcmp(argv[c], "-loop_compatibility")) {
loop_compatibility = 1;
} else if (!strcmp(argv[c], "-q") && c < argc - 1) {
config.quality = ExUtilGetFloat(argv[++c], &parse_error);
} else if (!strcmp(argv[c], "-m") && c < argc - 1) {
config.method = ExUtilGetInt(argv[++c], 0, &parse_error);
} else if (!strcmp(argv[c], "-min_size")) {
enc_options.minimize_size = 1;
} else if (!strcmp(argv[c], "-kmax") && c < argc - 1) {
enc_options.kmax = ExUtilGetInt(argv[++c], 0, &parse_error);
default_kmax = 0;
} else if (!strcmp(argv[c], "-kmin") && c < argc - 1) {
enc_options.kmin = ExUtilGetInt(argv[++c], 0, &parse_error);
default_kmin = 0;
} else if (!strcmp(argv[c], "-f") && c < argc - 1) {
config.filter_strength = ExUtilGetInt(argv[++c], 0, &parse_error);
} else if (!strcmp(argv[c], "-metadata") && c < argc - 1) {
static const struct {
const char* option;
int flag;
} kTokens[] = {
{ "all", METADATA_ALL },
{ "none", 0 },
{ "icc", METADATA_ICC },
{ "xmp", METADATA_XMP },
};
const size_t kNumTokens = sizeof(kTokens) / sizeof(*kTokens);
const char* start = argv[++c];
const char* const end = start + strlen(start);
keep_metadata = 0;
while (start < end) {
size_t i;
const char* token = strchr(start, ',');
if (token == NULL) token = end;
for (i = 0; i < kNumTokens; ++i) {
if ((size_t)(token - start) == strlen(kTokens[i].option) &&
!strncmp(start, kTokens[i].option, strlen(kTokens[i].option))) {
if (kTokens[i].flag != 0) {
keep_metadata |= kTokens[i].flag;
} else {
keep_metadata = 0;
}
break;
}
}
if (i == kNumTokens) {
fprintf(stderr, "Error! Unknown metadata type '%.*s'\n",
(int)(token - start), start);
Help();
FREE_WARGV_AND_RETURN(-1);
}
start = token + 1;
}
} else if (!strcmp(argv[c], "-mt")) {
++config.thread_level;
} else if (!strcmp(argv[c], "-version")) {
const int enc_version = WebPGetEncoderVersion();
const int mux_version = WebPGetMuxVersion();
printf("WebP Encoder version: %d.%d.%d\nWebP Mux version: %d.%d.%d\n",
(enc_version >> 16) & 0xff, (enc_version >> 8) & 0xff,
enc_version & 0xff, (mux_version >> 16) & 0xff,
(mux_version >> 8) & 0xff, mux_version & 0xff);
FREE_WARGV_AND_RETURN(0);
} else if (!strcmp(argv[c], "-quiet")) {
quiet = 1;
enc_options.verbose = 0;
} else if (!strcmp(argv[c], "-v")) {
verbose = 1;
enc_options.verbose = 1;
} else if (!strcmp(argv[c], "--")) {
if (c < argc - 1) in_file = GET_WARGV(argv, ++c);
break;
} else if (argv[c][0] == '-') {
fprintf(stderr, "Error! Unknown option '%s'\n", argv[c]);
Help();
FREE_WARGV_AND_RETURN(-1);
} else {
in_file = GET_WARGV(argv, c);
}
if (parse_error) {
Help();
FREE_WARGV_AND_RETURN(-1);
}
}
// Appropriate default kmin, kmax values for lossy and lossless.
if (default_kmin) {
enc_options.kmin = config.lossless ? 9 : 3;
}
if (default_kmax) {
enc_options.kmax = config.lossless ? 17 : 5;
}
if (!WebPValidateConfig(&config)) {
fprintf(stderr, "Error! Invalid configuration.\n");
goto End;
}
if (in_file == NULL) {
fprintf(stderr, "No input file specified!\n");
Help();
goto End;
}
// Start the decoder object
gif = DGifOpenFileUnicode(in_file, &gif_error);
if (gif == NULL) goto End;
// Loop over GIF images
done = 0;
do {
GifRecordType type;
if (DGifGetRecordType(gif, &type) == GIF_ERROR) goto End;
switch (type) {
case IMAGE_DESC_RECORD_TYPE: {
GIFFrameRect gif_rect;
GifImageDesc* const image_desc = &gif->Image;
if (!DGifGetImageDesc(gif)) goto End;
if (frame_number == 0) {
if (verbose) {
printf("Canvas screen: %d x %d\n", gif->SWidth, gif->SHeight);
}
// Fix some broken GIF global headers that report
// 0 x 0 screen dimension.
if (gif->SWidth == 0 || gif->SHeight == 0) {
image_desc->Left = 0;
image_desc->Top = 0;
gif->SWidth = image_desc->Width;
gif->SHeight = image_desc->Height;
if (gif->SWidth <= 0 || gif->SHeight <= 0) {
goto End;
}
if (verbose) {
printf("Fixed canvas screen dimension to: %d x %d\n",
gif->SWidth, gif->SHeight);
}
}
// Allocate current buffer.
frame.width = gif->SWidth;
frame.height = gif->SHeight;
frame.use_argb = 1;
if (!WebPPictureAlloc(&frame)) goto End;
GIFClearPic(&frame, NULL);
if (!(WebPPictureCopy(&frame, &curr_canvas) &&
WebPPictureCopy(&frame, &prev_canvas))) {
fprintf(stderr, "Error allocating canvas.\n");
goto End;
}
// Background color.
GIFGetBackgroundColor(gif->SColorMap, gif->SBackGroundColor,
transparent_index,
&enc_options.anim_params.bgcolor);
// Initialize encoder.
enc = WebPAnimEncoderNew(curr_canvas.width, curr_canvas.height,
&enc_options);
if (enc == NULL) {
fprintf(stderr,
"Error! Could not create encoder object. Possibly due to "
"a memory error.\n");
goto End;
}
}
// Some even more broken GIF can have sub-rect with zero width/height.
if (image_desc->Width == 0 || image_desc->Height == 0) {
image_desc->Width = gif->SWidth;
image_desc->Height = gif->SHeight;
}
if (!GIFReadFrame(gif, transparent_index, &gif_rect, &frame)) {
goto End;
}
// Blend frame rectangle with previous canvas to compose full canvas.
// Note that 'curr_canvas' is same as 'prev_canvas' at this point.
GIFBlendFrames(&frame, &gif_rect, &curr_canvas);
if (!WebPAnimEncoderAdd(enc, &curr_canvas, frame_timestamp, &config)) {
fprintf(stderr, "Error while adding frame #%d: %s\n", frame_number,
WebPAnimEncoderGetError(enc));
goto End;
} else {
++frame_number;
}
// Update canvases.
GIFDisposeFrame(orig_dispose, &gif_rect, &prev_canvas, &curr_canvas);
GIFCopyPixels(&curr_canvas, &prev_canvas);
// Force frames with a small or no duration to 100ms to be consistent
// with web browsers and other transcoding tools. This also avoids
// incorrect durations between frames when padding frames are
// discarded.
if (frame_duration <= 10) {
frame_duration = 100;
}
// Update timestamp (for next frame).
frame_timestamp += frame_duration;
// In GIF, graphic control extensions are optional for a frame, so we
// may not get one before reading the next frame. To handle this case,
// we reset frame properties to reasonable defaults for the next frame.
orig_dispose = GIF_DISPOSE_NONE;
frame_duration = 0;
transparent_index = GIF_INDEX_INVALID;
break;
}
case EXTENSION_RECORD_TYPE: {
int extension;
GifByteType* data = NULL;
if (DGifGetExtension(gif, &extension, &data) == GIF_ERROR) {
goto End;
}
if (data == NULL) continue;
switch (extension) {
case COMMENT_EXT_FUNC_CODE: {
break; // Do nothing for now.
}
case GRAPHICS_EXT_FUNC_CODE: {
if (!GIFReadGraphicsExtension(data, &frame_duration, &orig_dispose,
&transparent_index)) {
goto End;
}
break;
}
case PLAINTEXT_EXT_FUNC_CODE: {
break;
}
case APPLICATION_EXT_FUNC_CODE: {
if (data[0] != 11) break; // Chunk is too short
if (!memcmp(data + 1, "NETSCAPE2.0", 11) ||
!memcmp(data + 1, "ANIMEXTS1.0", 11)) {
if (!GIFReadLoopCount(gif, &data, &loop_count)) {
goto End;
}
if (verbose) {
fprintf(stderr, "Loop count: %d\n", loop_count);
}
stored_loop_count = loop_compatibility ? (loop_count != 0) : 1;
} else { // An extension containing metadata.
// We only store the first encountered chunk of each type, and
// only if requested by the user.
const int is_xmp = (keep_metadata & METADATA_XMP) &&
!stored_xmp &&
!memcmp(data + 1, "XMP DataXMP", 11);
const int is_icc = (keep_metadata & METADATA_ICC) &&
!stored_icc &&
!memcmp(data + 1, "ICCRGBG1012", 11);
if (is_xmp || is_icc) {
if (!GIFReadMetadata(gif, &data,
is_xmp ? &xmp_data : &icc_data)) {
goto End;
}
if (is_icc) {
stored_icc = 1;
} else if (is_xmp) {
stored_xmp = 1;
}
}
}
break;
}
default: {
break; // skip
}
}
while (data != NULL) {
if (DGifGetExtensionNext(gif, &data) == GIF_ERROR) goto End;
}
break;
}
case TERMINATE_RECORD_TYPE: {
done = 1;
break;
}
default: {
if (verbose) {
fprintf(stderr, "Skipping over unknown record type %d\n", type);
}
break;
}
}
} while (!done);
// Last NULL frame.
if (!WebPAnimEncoderAdd(enc, NULL, frame_timestamp, NULL)) {
fprintf(stderr, "Error flushing WebP muxer.\n");
fprintf(stderr, "%s\n", WebPAnimEncoderGetError(enc));
}
if (!WebPAnimEncoderAssemble(enc, &webp_data)) {
fprintf(stderr, "%s\n", WebPAnimEncoderGetError(enc));
goto End;
}
// If there's only one frame, we don't need to handle loop count.
if (frame_number == 1) {
loop_count = 0;
} else if (!loop_compatibility) {
if (!stored_loop_count) {
// if no loop-count element is seen, the default is '1' (loop-once)
// and we need to signal it explicitly in WebP. Note however that
// in case there's a single frame, we still don't need to store it.
if (frame_number > 1) {
stored_loop_count = 1;
loop_count = 1;
}
} else if (loop_count > 0 && loop_count < 65535) {
// adapt GIF's semantic to WebP's (except in the infinite-loop case)
loop_count += 1;
}
}
// loop_count of 0 is the default (infinite), so no need to signal it
if (loop_count == 0) stored_loop_count = 0;
if (stored_loop_count || stored_icc || stored_xmp) {
// Re-mux to add loop count and/or metadata as needed.
mux = WebPMuxCreate(&webp_data, 1);
if (mux == NULL) {
fprintf(stderr, "ERROR: Could not re-mux to add loop count/metadata.\n");
goto End;
}
WebPDataClear(&webp_data);
if (stored_loop_count) { // Update loop count.
WebPMuxAnimParams new_params;
err = WebPMuxGetAnimationParams(mux, &new_params);
if (err != WEBP_MUX_OK) {
fprintf(stderr, "ERROR (%s): Could not fetch loop count.\n",
ErrorString(err));
goto End;
}
new_params.loop_count = loop_count;
err = WebPMuxSetAnimationParams(mux, &new_params);
if (err != WEBP_MUX_OK) {
fprintf(stderr, "ERROR (%s): Could not update loop count.\n",
ErrorString(err));
goto End;
}
}
if (stored_icc) { // Add ICCP chunk.
err = WebPMuxSetChunk(mux, "ICCP", &icc_data, 1);
if (verbose) {
fprintf(stderr, "ICC size: %d\n", (int)icc_data.size);
}
if (err != WEBP_MUX_OK) {
fprintf(stderr, "ERROR (%s): Could not set ICC chunk.\n",
ErrorString(err));
goto End;
}
}
if (stored_xmp) { // Add XMP chunk.
err = WebPMuxSetChunk(mux, "XMP ", &xmp_data, 1);
if (verbose) {
fprintf(stderr, "XMP size: %d\n", (int)xmp_data.size);
}
if (err != WEBP_MUX_OK) {
fprintf(stderr, "ERROR (%s): Could not set XMP chunk.\n",
ErrorString(err));
goto End;
}
}
err = WebPMuxAssemble(mux, &webp_data);
if (err != WEBP_MUX_OK) {
fprintf(stderr, "ERROR (%s): Could not assemble when re-muxing to add "
"loop count/metadata.\n", ErrorString(err));
goto End;
}
}
if (out_file != NULL) {
if (!ImgIoUtilWriteFile((const char*)out_file, webp_data.bytes,
webp_data.size)) {
WFPRINTF(stderr, "Error writing output file: %s\n", out_file);
goto End;
}
if (!quiet) {
if (!WSTRCMP(out_file, "-")) {
fprintf(stderr, "Saved %d bytes to STDIO\n",
(int)webp_data.size);
} else {
WFPRINTF(stderr, "Saved output file (%d bytes): %s\n",
(int)webp_data.size, out_file);
}
}
} else {
if (!quiet) {
fprintf(stderr, "Nothing written; use -o flag to save the result "
"(%d bytes).\n", (int)webp_data.size);
}
}
// All OK.
ok = 1;
gif_error = GIF_OK;
End:
WebPDataClear(&icc_data);
WebPDataClear(&xmp_data);
WebPMuxDelete(mux);
WebPDataClear(&webp_data);
WebPPictureFree(&frame);
WebPPictureFree(&curr_canvas);
WebPPictureFree(&prev_canvas);
WebPAnimEncoderDelete(enc);
if (gif_error != GIF_OK) {
GIFDisplayError(gif, gif_error);
}
if (gif != NULL) {
#if LOCAL_GIF_PREREQ(5,1)
DGifCloseFile(gif, &gif_error);
#else
DGifCloseFile(gif);
#endif
}
FREE_WARGV_AND_RETURN(!ok);
}
#else // !WEBP_HAVE_GIF
int main(int argc, const char* argv[]) {
fprintf(stderr, "GIF support not enabled in %s.\n", argv[0]);
(void)argc;
return 0;
}
#endif
//------------------------------------------------------------------------------

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@ -1,416 +0,0 @@
// Copyright 2012 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// GIF decode.
#include "./gifdec.h"
#include <stdio.h>
#ifdef WEBP_HAVE_GIF
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "webp/encode.h"
#include "webp/mux_types.h"
#define GIF_TRANSPARENT_COLOR 0x00000000u
#define GIF_WHITE_COLOR 0xffffffffu
#define GIF_TRANSPARENT_MASK 0x01
#define GIF_DISPOSE_MASK 0x07
#define GIF_DISPOSE_SHIFT 2
// from utils/utils.h
#ifdef __cplusplus
extern "C" {
#endif
extern void WebPCopyPlane(const uint8_t* src, int src_stride,
uint8_t* dst, int dst_stride,
int width, int height);
extern void WebPCopyPixels(const WebPPicture* const src,
WebPPicture* const dst);
#ifdef __cplusplus
}
#endif
void GIFGetBackgroundColor(const ColorMapObject* const color_map,
int bgcolor_index, int transparent_index,
uint32_t* const bgcolor) {
if (transparent_index != GIF_INDEX_INVALID &&
bgcolor_index == transparent_index) {
*bgcolor = GIF_TRANSPARENT_COLOR; // Special case.
} else if (color_map == NULL || color_map->Colors == NULL
|| bgcolor_index >= color_map->ColorCount) {
*bgcolor = GIF_WHITE_COLOR;
fprintf(stderr,
"GIF decode warning: invalid background color index. Assuming "
"white background.\n");
} else {
const GifColorType color = color_map->Colors[bgcolor_index];
*bgcolor = (0xffu << 24)
| (color.Red << 16)
| (color.Green << 8)
| (color.Blue << 0);
}
}
int GIFReadGraphicsExtension(const GifByteType* const buf, int* const duration,
GIFDisposeMethod* const dispose,
int* const transparent_index) {
const int flags = buf[1];
const int dispose_raw = (flags >> GIF_DISPOSE_SHIFT) & GIF_DISPOSE_MASK;
const int duration_raw = buf[2] | (buf[3] << 8); // In 10 ms units.
if (buf[0] != 4) return 0;
*duration = duration_raw * 10; // Duration is in 1 ms units.
switch (dispose_raw) {
case 3:
*dispose = GIF_DISPOSE_RESTORE_PREVIOUS;
break;
case 2:
*dispose = GIF_DISPOSE_BACKGROUND;
break;
case 1:
case 0:
default:
*dispose = GIF_DISPOSE_NONE;
break;
}
*transparent_index =
(flags & GIF_TRANSPARENT_MASK) ? buf[4] : GIF_INDEX_INVALID;
return 1;
}
static int Remap(const GifFileType* const gif, const uint8_t* const src,
int len, int transparent_index, uint32_t* dst) {
int i;
const GifColorType* colors;
const ColorMapObject* const cmap =
gif->Image.ColorMap ? gif->Image.ColorMap : gif->SColorMap;
if (cmap == NULL) return 1;
if (cmap->Colors == NULL || cmap->ColorCount <= 0) return 0;
colors = cmap->Colors;
for (i = 0; i < len; ++i) {
if (src[i] == transparent_index) {
dst[i] = GIF_TRANSPARENT_COLOR;
} else if (src[i] < cmap->ColorCount) {
const GifColorType c = colors[src[i]];
dst[i] = c.Blue | (c.Green << 8) | (c.Red << 16) | (0xffu << 24);
} else {
return 0;
}
}
return 1;
}
int GIFReadFrame(GifFileType* const gif, int transparent_index,
GIFFrameRect* const gif_rect, WebPPicture* const picture) {
WebPPicture sub_image;
const GifImageDesc* const image_desc = &gif->Image;
uint32_t* dst = NULL;
uint8_t* tmp = NULL;
const GIFFrameRect rect = {
image_desc->Left, image_desc->Top, image_desc->Width, image_desc->Height
};
const uint64_t memory_needed = 4 * rect.width * (uint64_t)rect.height;
int ok = 0;
*gif_rect = rect;
if (memory_needed != (size_t)memory_needed || memory_needed > (4ULL << 32)) {
fprintf(stderr, "Image is too large (%d x %d).", rect.width, rect.height);
return 0;
}
// Use a view for the sub-picture:
if (!WebPPictureView(picture, rect.x_offset, rect.y_offset,
rect.width, rect.height, &sub_image)) {
fprintf(stderr, "Sub-image %dx%d at position %d,%d is invalid!\n",
rect.width, rect.height, rect.x_offset, rect.y_offset);
return 0;
}
dst = sub_image.argb;
tmp = (uint8_t*)WebPMalloc(rect.width * sizeof(*tmp));
if (tmp == NULL) goto End;
if (image_desc->Interlace) { // Interlaced image.
// We need 4 passes, with the following offsets and jumps.
const int interlace_offsets[] = { 0, 4, 2, 1 };
const int interlace_jumps[] = { 8, 8, 4, 2 };
int pass;
for (pass = 0; pass < 4; ++pass) {
const size_t stride = (size_t)sub_image.argb_stride;
int y = interlace_offsets[pass];
uint32_t* row = dst + y * stride;
const size_t jump = interlace_jumps[pass] * stride;
for (; y < rect.height; y += interlace_jumps[pass], row += jump) {
if (DGifGetLine(gif, tmp, rect.width) == GIF_ERROR) goto End;
if (!Remap(gif, tmp, rect.width, transparent_index, row)) goto End;
}
}
} else { // Non-interlaced image.
int y;
uint32_t* ptr = dst;
for (y = 0; y < rect.height; ++y, ptr += sub_image.argb_stride) {
if (DGifGetLine(gif, tmp, rect.width) == GIF_ERROR) goto End;
if (!Remap(gif, tmp, rect.width, transparent_index, ptr)) goto End;
}
}
ok = 1;
End:
if (!ok) picture->error_code = sub_image.error_code;
WebPPictureFree(&sub_image);
WebPFree(tmp);
return ok;
}
int GIFReadLoopCount(GifFileType* const gif, GifByteType** const buf,
int* const loop_count) {
assert(!memcmp(*buf + 1, "NETSCAPE2.0", 11) ||
!memcmp(*buf + 1, "ANIMEXTS1.0", 11));
if (DGifGetExtensionNext(gif, buf) == GIF_ERROR) {
return 0;
}
if (*buf == NULL) {
return 0; // Loop count sub-block missing.
}
if ((*buf)[0] < 3 || (*buf)[1] != 1) {
return 0; // wrong size/marker
}
*loop_count = (*buf)[2] | ((*buf)[3] << 8);
return 1;
}
int GIFReadMetadata(GifFileType* const gif, GifByteType** const buf,
WebPData* const metadata) {
const int is_xmp = !memcmp(*buf + 1, "XMP DataXMP", 11);
const int is_icc = !memcmp(*buf + 1, "ICCRGBG1012", 11);
assert(is_xmp || is_icc);
(void)is_icc; // silence unused warning.
// Construct metadata from sub-blocks.
// Usual case (including ICC profile): In each sub-block, the
// first byte specifies its size in bytes (0 to 255) and the
// rest of the bytes contain the data.
// Special case for XMP data: In each sub-block, the first byte
// is also part of the XMP payload. XMP in GIF also has a 257
// byte padding data. See the XMP specification for details.
while (1) {
WebPData subblock;
const uint8_t* tmp;
if (DGifGetExtensionNext(gif, buf) == GIF_ERROR) {
return 0;
}
if (*buf == NULL) break; // Finished.
subblock.size = is_xmp ? (*buf)[0] + 1 : (*buf)[0];
assert(subblock.size > 0);
subblock.bytes = is_xmp ? *buf : *buf + 1;
// Note: We store returned value in 'tmp' first, to avoid
// leaking old memory in metadata->bytes on error.
tmp = (uint8_t*)realloc((void*)metadata->bytes,
metadata->size + subblock.size);
if (tmp == NULL) {
return 0;
}
memcpy((void*)(tmp + metadata->size),
subblock.bytes, subblock.size);
metadata->bytes = tmp;
metadata->size += subblock.size;
}
if (is_xmp) {
// XMP padding data is 0x01, 0xff, 0xfe ... 0x01, 0x00.
const size_t xmp_pading_size = 257;
if (metadata->size > xmp_pading_size) {
metadata->size -= xmp_pading_size;
}
}
return 1;
}
static void ClearRectangle(WebPPicture* const picture,
int left, int top, int width, int height) {
int i, j;
const size_t stride = picture->argb_stride;
uint32_t* dst = picture->argb + top * stride + left;
for (j = 0; j < height; ++j, dst += stride) {
for (i = 0; i < width; ++i) dst[i] = GIF_TRANSPARENT_COLOR;
}
}
void GIFClearPic(WebPPicture* const pic, const GIFFrameRect* const rect) {
if (rect != NULL) {
ClearRectangle(pic, rect->x_offset, rect->y_offset,
rect->width, rect->height);
} else {
ClearRectangle(pic, 0, 0, pic->width, pic->height);
}
}
void GIFCopyPixels(const WebPPicture* const src, WebPPicture* const dst) {
WebPCopyPixels(src, dst);
}
void GIFDisposeFrame(GIFDisposeMethod dispose, const GIFFrameRect* const rect,
const WebPPicture* const prev_canvas,
WebPPicture* const curr_canvas) {
assert(rect != NULL);
if (dispose == GIF_DISPOSE_BACKGROUND) {
GIFClearPic(curr_canvas, rect);
} else if (dispose == GIF_DISPOSE_RESTORE_PREVIOUS) {
const size_t src_stride = prev_canvas->argb_stride;
const uint32_t* const src = prev_canvas->argb + rect->x_offset
+ rect->y_offset * src_stride;
const size_t dst_stride = curr_canvas->argb_stride;
uint32_t* const dst = curr_canvas->argb + rect->x_offset
+ rect->y_offset * dst_stride;
assert(prev_canvas != NULL);
WebPCopyPlane((uint8_t*)src, (int)(4 * src_stride),
(uint8_t*)dst, (int)(4 * dst_stride),
4 * rect->width, rect->height);
}
}
void GIFBlendFrames(const WebPPicture* const src,
const GIFFrameRect* const rect, WebPPicture* const dst) {
int i, j;
const size_t src_stride = src->argb_stride;
const size_t dst_stride = dst->argb_stride;
assert(src->width == dst->width && src->height == dst->height);
for (j = rect->y_offset; j < rect->y_offset + rect->height; ++j) {
for (i = rect->x_offset; i < rect->x_offset + rect->width; ++i) {
const uint32_t src_pixel = src->argb[j * src_stride + i];
const int src_alpha = src_pixel >> 24;
if (src_alpha != 0) {
dst->argb[j * dst_stride + i] = src_pixel;
}
}
}
}
void GIFDisplayError(const GifFileType* const gif, int gif_error) {
// libgif 4.2.0 has retired PrintGifError() and added GifErrorString().
#if LOCAL_GIF_PREREQ(4,2)
#if LOCAL_GIF_PREREQ(5,0)
// Static string actually, hence the const char* cast.
const char* error_str = (const char*)GifErrorString(
(gif == NULL) ? gif_error : gif->Error);
#else
const char* error_str = (const char*)GifErrorString();
(void)gif;
#endif
if (error_str == NULL) error_str = "Unknown error";
fprintf(stderr, "GIFLib Error %d: %s\n", gif_error, error_str);
#else
(void)gif;
fprintf(stderr, "GIFLib Error %d: ", gif_error);
PrintGifError();
fprintf(stderr, "\n");
#endif
}
#else // !WEBP_HAVE_GIF
static void ErrorGIFNotAvailable() {
fprintf(stderr, "GIF support not compiled. Please install the libgif-dev "
"package before building.\n");
}
void GIFGetBackgroundColor(const struct ColorMapObject* const color_map,
int bgcolor_index, int transparent_index,
uint32_t* const bgcolor) {
(void)color_map;
(void)bgcolor_index;
(void)transparent_index;
(void)bgcolor;
ErrorGIFNotAvailable();
}
int GIFReadGraphicsExtension(const GifByteType* const data, int* const duration,
GIFDisposeMethod* const dispose,
int* const transparent_index) {
(void)data;
(void)duration;
(void)dispose;
(void)transparent_index;
ErrorGIFNotAvailable();
return 0;
}
int GIFReadFrame(struct GifFileType* const gif, int transparent_index,
GIFFrameRect* const gif_rect,
struct WebPPicture* const picture) {
(void)gif;
(void)transparent_index;
(void)gif_rect;
(void)picture;
ErrorGIFNotAvailable();
return 0;
}
int GIFReadLoopCount(struct GifFileType* const gif, GifByteType** const buf,
int* const loop_count) {
(void)gif;
(void)buf;
(void)loop_count;
ErrorGIFNotAvailable();
return 0;
}
int GIFReadMetadata(struct GifFileType* const gif, GifByteType** const buf,
struct WebPData* const metadata) {
(void)gif;
(void)buf;
(void)metadata;
ErrorGIFNotAvailable();
return 0;
}
void GIFDisposeFrame(GIFDisposeMethod dispose, const GIFFrameRect* const rect,
const struct WebPPicture* const prev_canvas,
struct WebPPicture* const curr_canvas) {
(void)dispose;
(void)rect;
(void)prev_canvas;
(void)curr_canvas;
ErrorGIFNotAvailable();
}
void GIFBlendFrames(const struct WebPPicture* const src,
const GIFFrameRect* const rect,
struct WebPPicture* const dst) {
(void)src;
(void)rect;
(void)dst;
ErrorGIFNotAvailable();
}
void GIFDisplayError(const struct GifFileType* const gif, int gif_error) {
(void)gif;
(void)gif_error;
ErrorGIFNotAvailable();
}
void GIFClearPic(struct WebPPicture* const pic,
const GIFFrameRect* const rect) {
(void)pic;
(void)rect;
ErrorGIFNotAvailable();
}
void GIFCopyPixels(const struct WebPPicture* const src,
struct WebPPicture* const dst) {
(void)src;
(void)dst;
ErrorGIFNotAvailable();
}
#endif // WEBP_HAVE_GIF
// -----------------------------------------------------------------------------

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@ -1,116 +0,0 @@
// Copyright 2014 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// GIF decode.
#ifndef WEBP_EXAMPLES_GIFDEC_H_
#define WEBP_EXAMPLES_GIFDEC_H_
#include <stdio.h>
#include "webp/types.h"
#ifdef HAVE_CONFIG_H
#include "webp/config.h"
#endif
#ifdef WEBP_HAVE_GIF
#include <gif_lib.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
// GIFLIB_MAJOR is only defined in libgif >= 4.2.0.
#if defined(GIFLIB_MAJOR) && defined(GIFLIB_MINOR)
# define LOCAL_GIF_VERSION ((GIFLIB_MAJOR << 8) | GIFLIB_MINOR)
# define LOCAL_GIF_PREREQ(maj, min) \
(LOCAL_GIF_VERSION >= (((maj) << 8) | (min)))
#else
# define LOCAL_GIF_VERSION 0
# define LOCAL_GIF_PREREQ(maj, min) 0
#endif
#define GIF_INDEX_INVALID (-1)
typedef enum GIFDisposeMethod {
GIF_DISPOSE_NONE,
GIF_DISPOSE_BACKGROUND,
GIF_DISPOSE_RESTORE_PREVIOUS
} GIFDisposeMethod;
typedef struct {
int x_offset, y_offset, width, height;
} GIFFrameRect;
struct WebPData;
struct WebPPicture;
#ifndef WEBP_HAVE_GIF
struct ColorMapObject;
struct GifFileType;
typedef unsigned char GifByteType;
#endif
// Given the index of background color and transparent color, returns the
// corresponding background color (in BGRA format) in 'bgcolor'.
void GIFGetBackgroundColor(const struct ColorMapObject* const color_map,
int bgcolor_index, int transparent_index,
uint32_t* const bgcolor);
// Parses the given graphics extension data to get frame duration (in 1ms
// units), dispose method and transparent color index.
// Returns true on success.
int GIFReadGraphicsExtension(const GifByteType* const buf, int* const duration,
GIFDisposeMethod* const dispose,
int* const transparent_index);
// Reads the next GIF frame from 'gif' into 'picture'. Also, returns the GIF
// frame dimensions and offsets in 'rect'.
// Returns true on success.
int GIFReadFrame(struct GifFileType* const gif, int transparent_index,
GIFFrameRect* const gif_rect,
struct WebPPicture* const picture);
// Parses loop count from the given Netscape extension data.
int GIFReadLoopCount(struct GifFileType* const gif, GifByteType** const buf,
int* const loop_count);
// Parses the given ICC or XMP extension data and stores it into 'metadata'.
// Returns true on success.
int GIFReadMetadata(struct GifFileType* const gif, GifByteType** const buf,
struct WebPData* const metadata);
// Dispose the pixels within 'rect' of 'curr_canvas' based on 'dispose' method
// and 'prev_canvas'.
void GIFDisposeFrame(GIFDisposeMethod dispose, const GIFFrameRect* const rect,
const struct WebPPicture* const prev_canvas,
struct WebPPicture* const curr_canvas);
// Given 'src' picture and its frame rectangle 'rect', blend it into 'dst'.
void GIFBlendFrames(const struct WebPPicture* const src,
const GIFFrameRect* const rect,
struct WebPPicture* const dst);
// Prints an error string based on 'gif_error'.
void GIFDisplayError(const struct GifFileType* const gif, int gif_error);
// In the given 'pic', clear the pixels in 'rect' to transparent color.
void GIFClearPic(struct WebPPicture* const pic, const GIFFrameRect* const rect);
// Copy pixels from 'src' to 'dst' honoring strides. 'src' and 'dst' are assumed
// to be already allocated.
void GIFCopyPixels(const struct WebPPicture* const src,
struct WebPPicture* const dst);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_EXAMPLES_GIFDEC_H_

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@ -1,339 +0,0 @@
// Copyright 2016 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// generate an animated WebP out of a sequence of images
// (PNG, JPEG, ...)
//
// Example usage:
// img2webp -o out.webp -q 40 -mixed -duration 40 input??.png
//
// Author: skal@google.com (Pascal Massimino)
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef HAVE_CONFIG_H
#include "webp/config.h"
#endif
#include "../examples/example_util.h"
#include "../imageio/image_dec.h"
#include "../imageio/imageio_util.h"
#include "./stopwatch.h"
#include "./unicode.h"
#include "sharpyuv/sharpyuv.h"
#include "webp/encode.h"
#include "webp/mux.h"
//------------------------------------------------------------------------------
static void Help(void) {
printf("Usage:\n\n");
printf(" img2webp [file_options] [[frame_options] frame_file]...");
printf(" [-o webp_file]\n\n");
printf("File-level options (only used at the start of compression):\n");
printf(" -min_size ............ minimize size\n");
printf(" -kmax <int> .......... maximum number of frame between key-frames\n"
" (0=only keyframes)\n");
printf(" -kmin <int> .......... minimum number of frame between key-frames\n"
" (0=disable key-frames altogether)\n");
printf(" -mixed ............... use mixed lossy/lossless automatic mode\n");
printf(" -near_lossless <int> . use near-lossless image preprocessing\n"
" (0..100=off), default=100\n");
printf(" -sharp_yuv ........... use sharper (and slower) RGB->YUV "
"conversion\n "
"(lossy only)\n");
printf(" -loop <int> .......... loop count (default: 0, = infinite loop)\n");
printf(" -v ................... verbose mode\n");
printf(" -h ................... this help\n");
printf(" -version ............. print version number and exit\n");
printf("\n");
printf("Per-frame options (only used for subsequent images input):\n");
printf(" -d <int> ............. frame duration in ms (default: 100)\n");
printf(" -lossless ........... use lossless mode (default)\n");
printf(" -lossy ... ........... use lossy mode\n");
printf(" -q <float> ........... quality\n");
printf(" -m <int> ............. method to use\n");
printf("\n");
printf("example: img2webp -loop 2 in0.png -lossy in1.jpg\n"
" -d 80 in2.tiff -o out.webp\n");
printf("\nNote: if a single file name is passed as the argument, the "
"arguments will be\n");
printf("tokenized from this file. The file name must not start with "
"the character '-'.\n");
printf("\nSupported input formats:\n %s\n",
WebPGetEnabledInputFileFormats());
}
//------------------------------------------------------------------------------
static int ReadImage(const char filename[], WebPPicture* const pic) {
const uint8_t* data = NULL;
size_t data_size = 0;
WebPImageReader reader;
int ok;
#ifdef HAVE_WINCODEC_H
// Try to decode the file using WIC falling back to the other readers for
// e.g., WebP.
ok = ReadPictureWithWIC(filename, pic, 1, NULL);
if (ok) return 1;
#endif
if (!ImgIoUtilReadFile(filename, &data, &data_size)) return 0;
reader = WebPGuessImageReader(data, data_size);
ok = reader(data, data_size, pic, 1, NULL);
WebPFree((void*)data);
return ok;
}
static int SetLoopCount(int loop_count, WebPData* const webp_data) {
int ok = 1;
WebPMuxError err;
uint32_t features;
WebPMuxAnimParams new_params;
WebPMux* const mux = WebPMuxCreate(webp_data, 1);
if (mux == NULL) return 0;
err = WebPMuxGetFeatures(mux, &features);
ok = (err == WEBP_MUX_OK);
if (!ok || !(features & ANIMATION_FLAG)) goto End;
err = WebPMuxGetAnimationParams(mux, &new_params);
ok = (err == WEBP_MUX_OK);
if (ok) {
new_params.loop_count = loop_count;
err = WebPMuxSetAnimationParams(mux, &new_params);
ok = (err == WEBP_MUX_OK);
}
if (ok) {
WebPDataClear(webp_data);
err = WebPMuxAssemble(mux, webp_data);
ok = (err == WEBP_MUX_OK);
}
End:
WebPMuxDelete(mux);
if (!ok) {
fprintf(stderr, "Error during loop-count setting\n");
}
return ok;
}
//------------------------------------------------------------------------------
int main(int argc, const char* argv[]) {
const char* output = NULL;
WebPAnimEncoder* enc = NULL;
int verbose = 0;
int pic_num = 0;
int duration = 100;
int timestamp_ms = 0;
int loop_count = 0;
int width = 0, height = 0;
WebPAnimEncoderOptions anim_config;
WebPConfig config;
WebPPicture pic;
WebPData webp_data;
int c;
int have_input = 0;
CommandLineArguments cmd_args;
int ok;
INIT_WARGV(argc, argv);
ok = ExUtilInitCommandLineArguments(argc - 1, argv + 1, &cmd_args);
if (!ok) FREE_WARGV_AND_RETURN(1);
argc = cmd_args.argc_;
argv = cmd_args.argv_;
WebPDataInit(&webp_data);
if (!WebPAnimEncoderOptionsInit(&anim_config) ||
!WebPConfigInit(&config) ||
!WebPPictureInit(&pic)) {
fprintf(stderr, "Library version mismatch!\n");
ok = 0;
goto End;
}
// 1st pass of option parsing
for (c = 0; ok && c < argc; ++c) {
if (argv[c][0] == '-') {
int parse_error = 0;
if (!strcmp(argv[c], "-o") && c + 1 < argc) {
argv[c] = NULL;
output = (const char*)GET_WARGV_SHIFTED(argv, ++c);
} else if (!strcmp(argv[c], "-kmin") && c + 1 < argc) {
argv[c] = NULL;
anim_config.kmin = ExUtilGetInt(argv[++c], 0, &parse_error);
} else if (!strcmp(argv[c], "-kmax") && c + 1 < argc) {
argv[c] = NULL;
anim_config.kmax = ExUtilGetInt(argv[++c], 0, &parse_error);
} else if (!strcmp(argv[c], "-loop") && c + 1 < argc) {
argv[c] = NULL;
loop_count = ExUtilGetInt(argv[++c], 0, &parse_error);
if (loop_count < 0) {
fprintf(stderr, "Invalid non-positive loop-count (%d)\n", loop_count);
parse_error = 1;
}
} else if (!strcmp(argv[c], "-min_size")) {
anim_config.minimize_size = 1;
} else if (!strcmp(argv[c], "-mixed")) {
anim_config.allow_mixed = 1;
config.lossless = 0;
} else if (!strcmp(argv[c], "-near_lossless") && c + 1 < argc) {
argv[c] = NULL;
config.near_lossless = ExUtilGetInt(argv[++c], 0, &parse_error);
} else if (!strcmp(argv[c], "-sharp_yuv")) {
config.use_sharp_yuv = 1;
} else if (!strcmp(argv[c], "-v")) {
verbose = 1;
} else if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) {
Help();
FREE_WARGV_AND_RETURN(0);
} else if (!strcmp(argv[c], "-version")) {
const int enc_version = WebPGetEncoderVersion();
const int mux_version = WebPGetMuxVersion();
const int sharpyuv_version = SharpYuvGetVersion();
printf("WebP Encoder version: %d.%d.%d\nWebP Mux version: %d.%d.%d\n",
(enc_version >> 16) & 0xff, (enc_version >> 8) & 0xff,
enc_version & 0xff, (mux_version >> 16) & 0xff,
(mux_version >> 8) & 0xff, mux_version & 0xff);
printf("libsharpyuv: %d.%d.%d\n", (sharpyuv_version >> 24) & 0xff,
(sharpyuv_version >> 16) & 0xffff, sharpyuv_version & 0xff);
goto End;
} else {
continue;
}
ok = !parse_error;
if (!ok) goto End;
argv[c] = NULL; // mark option as 'parsed' during 1st pass
} else {
have_input |= 1;
}
}
if (!have_input) {
fprintf(stderr, "No input file(s) for generating animation!\n");
goto End;
}
// image-reading pass
pic_num = 0;
config.lossless = 1;
for (c = 0; ok && c < argc; ++c) {
if (argv[c] == NULL) continue;
if (argv[c][0] == '-') { // parse local options
int parse_error = 0;
if (!strcmp(argv[c], "-lossy")) {
if (!anim_config.allow_mixed) config.lossless = 0;
} else if (!strcmp(argv[c], "-lossless")) {
if (!anim_config.allow_mixed) config.lossless = 1;
} else if (!strcmp(argv[c], "-q") && c + 1 < argc) {
config.quality = ExUtilGetFloat(argv[++c], &parse_error);
} else if (!strcmp(argv[c], "-m") && c + 1 < argc) {
config.method = ExUtilGetInt(argv[++c], 0, &parse_error);
} else if (!strcmp(argv[c], "-d") && c + 1 < argc) {
duration = ExUtilGetInt(argv[++c], 0, &parse_error);
if (duration <= 0) {
fprintf(stderr, "Invalid negative duration (%d)\n", duration);
parse_error = 1;
}
} else {
parse_error = 1; // shouldn't be here.
fprintf(stderr, "Unknown option [%s]\n", argv[c]);
}
ok = !parse_error;
if (!ok) goto End;
continue;
}
if (ok) {
ok = WebPValidateConfig(&config);
if (!ok) {
fprintf(stderr, "Invalid configuration.\n");
goto End;
}
}
// read next input image
pic.use_argb = 1;
ok = ReadImage((const char*)GET_WARGV_SHIFTED(argv, c), &pic);
if (!ok) goto End;
if (enc == NULL) {
width = pic.width;
height = pic.height;
enc = WebPAnimEncoderNew(width, height, &anim_config);
ok = (enc != NULL);
if (!ok) {
fprintf(stderr, "Could not create WebPAnimEncoder object.\n");
}
}
if (ok) {
ok = (width == pic.width && height == pic.height);
if (!ok) {
fprintf(stderr, "Frame #%d dimension mismatched! "
"Got %d x %d. Was expecting %d x %d.\n",
pic_num, pic.width, pic.height, width, height);
}
}
if (ok) {
ok = WebPAnimEncoderAdd(enc, &pic, timestamp_ms, &config);
if (!ok) {
fprintf(stderr, "Error while adding frame #%d\n", pic_num);
}
}
WebPPictureFree(&pic);
if (!ok) goto End;
if (verbose) {
WFPRINTF(stderr, "Added frame #%3d at time %4d (file: %s)\n",
pic_num, timestamp_ms, GET_WARGV_SHIFTED(argv, c));
}
timestamp_ms += duration;
++pic_num;
}
// add a last fake frame to signal the last duration
ok = ok && WebPAnimEncoderAdd(enc, NULL, timestamp_ms, NULL);
ok = ok && WebPAnimEncoderAssemble(enc, &webp_data);
if (!ok) {
fprintf(stderr, "Error during final animation assembly.\n");
}
End:
// free resources
WebPAnimEncoderDelete(enc);
if (ok && loop_count > 0) { // Re-mux to add loop count.
ok = SetLoopCount(loop_count, &webp_data);
}
if (ok) {
if (output != NULL) {
ok = ImgIoUtilWriteFile(output, webp_data.bytes, webp_data.size);
if (ok) WFPRINTF(stderr, "output file: %s ", (const W_CHAR*)output);
} else {
fprintf(stderr, "[no output file specified] ");
}
}
if (ok) {
fprintf(stderr, "[%d frames, %u bytes].\n",
pic_num, (unsigned int)webp_data.size);
}
WebPDataClear(&webp_data);
ExUtilDeleteCommandLineArguments(&cmd_args);
FREE_WARGV_AND_RETURN(ok ? 0 : 1);
}

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external/libwebp/libwebp/examples/stopwatch.h vendored
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// Copyright 2011 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Helper functions to measure elapsed time.
//
// Author: Mikolaj Zalewski (mikolajz@google.com)
#ifndef WEBP_EXAMPLES_STOPWATCH_H_
#define WEBP_EXAMPLES_STOPWATCH_H_
#include "webp/types.h"
#if defined _WIN32 && !defined __GNUC__
#include <windows.h>
typedef LARGE_INTEGER Stopwatch;
static WEBP_INLINE void StopwatchReset(Stopwatch* watch) {
QueryPerformanceCounter(watch);
}
static WEBP_INLINE double StopwatchReadAndReset(Stopwatch* watch) {
const LARGE_INTEGER old_value = *watch;
LARGE_INTEGER freq;
if (!QueryPerformanceCounter(watch))
return 0.0;
if (!QueryPerformanceFrequency(&freq))
return 0.0;
if (freq.QuadPart == 0)
return 0.0;
return (watch->QuadPart - old_value.QuadPart) / (double)freq.QuadPart;
}
#else /* !_WIN32 */
#include <string.h> // memcpy
#include <sys/time.h>
typedef struct timeval Stopwatch;
static WEBP_INLINE void StopwatchReset(Stopwatch* watch) {
gettimeofday(watch, NULL);
}
static WEBP_INLINE double StopwatchReadAndReset(Stopwatch* watch) {
struct timeval old_value;
double delta_sec, delta_usec;
memcpy(&old_value, watch, sizeof(old_value));
gettimeofday(watch, NULL);
delta_sec = (double)watch->tv_sec - old_value.tv_sec;
delta_usec = (double)watch->tv_usec - old_value.tv_usec;
return delta_sec + delta_usec / 1000000.0;
}
#endif /* _WIN32 */
#endif // WEBP_EXAMPLES_STOPWATCH_H_

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external/libwebp/libwebp/examples/unicode.h vendored
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// Copyright 2018 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Unicode support for Windows. The main idea is to maintain an array of Unicode
// arguments (wargv) and use it only for file paths. The regular argv is used
// for everything else.
//
// Author: Yannis Guyon (yguyon@google.com)
#ifndef WEBP_EXAMPLES_UNICODE_H_
#define WEBP_EXAMPLES_UNICODE_H_
#include <stdio.h>
#if defined(_WIN32) && defined(_UNICODE)
// wchar_t is used instead of TCHAR because we only perform additional work when
// Unicode is enabled and because the output of CommandLineToArgvW() is wchar_t.
#include <fcntl.h>
#include <io.h>
#include <wchar.h>
#include <windows.h>
#include <shellapi.h>
// Create a wchar_t array containing Unicode parameters.
#define INIT_WARGV(ARGC, ARGV) \
int wargc; \
const W_CHAR** const wargv = \
(const W_CHAR**)CommandLineToArgvW(GetCommandLineW(), &wargc); \
do { \
if (wargv == NULL || wargc != (ARGC)) { \
fprintf(stderr, "Error: Unable to get Unicode arguments.\n"); \
FREE_WARGV_AND_RETURN(-1); \
} \
} while (0)
// Use this to get a Unicode argument (e.g. file path).
#define GET_WARGV(UNUSED, C) wargv[C]
// For cases where argv is shifted by one compared to wargv.
#define GET_WARGV_SHIFTED(UNUSED, C) wargv[(C) + 1]
#define GET_WARGV_OR_NULL() wargv
// Release resources. LocalFree() is needed after CommandLineToArgvW().
#define FREE_WARGV() LOCAL_FREE((W_CHAR** const)wargv)
#define LOCAL_FREE(WARGV) \
do { \
if ((WARGV) != NULL) LocalFree(WARGV); \
} while (0)
#define W_CHAR wchar_t // WCHAR without underscore might already be defined.
#define TO_W_CHAR(STR) (L##STR)
#define WFOPEN(ARG, OPT) _wfopen((const W_CHAR*)ARG, TO_W_CHAR(OPT))
#define WFPRINTF(STREAM, STR, ...) \
do { \
int prev_mode; \
fflush(STREAM); \
prev_mode = _setmode(_fileno(STREAM), _O_U8TEXT); \
fwprintf(STREAM, TO_W_CHAR(STR), __VA_ARGS__); \
fflush(STREAM); \
(void)_setmode(_fileno(STREAM), prev_mode); \
} while (0)
#define WPRINTF(STR, ...) WFPRINTF(stdout, STR, __VA_ARGS__)
#define WSTRLEN(FILENAME) wcslen((const W_CHAR*)FILENAME)
#define WSTRCMP(FILENAME, STR) wcscmp((const W_CHAR*)FILENAME, TO_W_CHAR(STR))
#define WSTRRCHR(FILENAME, STR) wcsrchr((const W_CHAR*)FILENAME, TO_W_CHAR(STR))
#define WSNPRINTF(A, B, STR, ...) _snwprintf(A, B, TO_W_CHAR(STR), __VA_ARGS__)
#else
#include <string.h>
// Unicode file paths work as is on Unix platforms, and no extra work is done on
// Windows either if Unicode is disabled.
#define INIT_WARGV(ARGC, ARGV)
#define GET_WARGV(ARGV, C) (ARGV)[C]
#define GET_WARGV_SHIFTED(ARGV, C) (ARGV)[C]
#define GET_WARGV_OR_NULL() NULL
#define FREE_WARGV()
#define LOCAL_FREE(WARGV)
#define W_CHAR char
#define TO_W_CHAR(STR) (STR)
#define WFOPEN(ARG, OPT) fopen(ARG, OPT)
#define WPRINTF(STR, ...) printf(STR, __VA_ARGS__)
#define WFPRINTF(STREAM, STR, ...) fprintf(STREAM, STR, __VA_ARGS__)
#define WSTRLEN(FILENAME) strlen(FILENAME)
#define WSTRCMP(FILENAME, STR) strcmp(FILENAME, STR)
#define WSTRRCHR(FILENAME, STR) strrchr(FILENAME, STR)
#define WSNPRINTF(A, B, STR, ...) snprintf(A, B, STR, __VA_ARGS__)
#endif // defined(_WIN32) && defined(_UNICODE)
// Don't forget to free wargv before returning (e.g. from main).
#define FREE_WARGV_AND_RETURN(VALUE) \
do { \
FREE_WARGV(); \
return (VALUE); \
} while (0)
#endif // WEBP_EXAMPLES_UNICODE_H_

76
external/libwebp/libwebp/examples/unicode_gif.h vendored
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// Copyright 2018 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// giflib doesn't have a Unicode DGifOpenFileName(). Let's make one.
//
// Author: Yannis Guyon (yguyon@google.com)
#ifndef WEBP_EXAMPLES_UNICODE_GIF_H_
#define WEBP_EXAMPLES_UNICODE_GIF_H_
#include "./unicode.h"
#ifdef HAVE_CONFIG_H
#include "webp/config.h" // For WEBP_HAVE_GIF
#endif
#if defined(WEBP_HAVE_GIF)
#ifdef _WIN32
#include <fcntl.h> // Not standard, needed for _topen and flags.
#include <io.h>
#endif
#include <gif_lib.h>
#include <string.h>
#include "./gifdec.h"
#if !defined(STDIN_FILENO)
#define STDIN_FILENO 0
#endif
static GifFileType* DGifOpenFileUnicode(const W_CHAR* file_name, int* error) {
if (!WSTRCMP(file_name, "-")) {
#if LOCAL_GIF_PREREQ(5, 0)
return DGifOpenFileHandle(STDIN_FILENO, error);
#else
(void)error;
return DGifOpenFileHandle(STDIN_FILENO);
#endif
}
#if defined(_WIN32) && defined(_UNICODE)
{
int file_handle = _wopen(file_name, _O_RDONLY | _O_BINARY);
if (file_handle == -1) {
if (error != NULL) *error = D_GIF_ERR_OPEN_FAILED;
return NULL;
}
#if LOCAL_GIF_PREREQ(5, 0)
return DGifOpenFileHandle(file_handle, error);
#else
return DGifOpenFileHandle(file_handle);
#endif
}
#else
#if LOCAL_GIF_PREREQ(5, 0)
return DGifOpenFileName(file_name, error);
#else
return DGifOpenFileName(file_name);
#endif
#endif // defined(_WIN32) && defined(_UNICODE)
// DGifCloseFile() is called later.
}
#endif // defined(WEBP_HAVE_GIF)
#endif // WEBP_EXAMPLES_UNICODE_GIF_H_

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external/libwebp/libwebp/examples/vwebp.c vendored
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@ -1,654 +0,0 @@
// Copyright 2011 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Simple OpenGL-based WebP file viewer.
//
// Author: Skal (pascal.massimino@gmail.com)
#ifdef HAVE_CONFIG_H
#include "webp/config.h"
#endif
#if defined(__unix__) || defined(__CYGWIN__)
#define _POSIX_C_SOURCE 200112L // for setenv
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined(WEBP_HAVE_GL)
#if defined(HAVE_GLUT_GLUT_H)
#include <GLUT/glut.h>
#else
#include <GL/glut.h>
#ifdef FREEGLUT
#include <GL/freeglut.h>
#endif
#endif
#ifdef WEBP_HAVE_QCMS
#include <qcms.h>
#endif
#include "webp/decode.h"
#include "webp/demux.h"
#include "../examples/example_util.h"
#include "../imageio/imageio_util.h"
#include "./unicode.h"
#if defined(_MSC_VER) && _MSC_VER < 1900
#define snprintf _snprintf
#endif
// Unfortunate global variables. Gathered into a struct for comfort.
static struct {
int has_animation;
int has_color_profile;
int done;
int decoding_error;
int print_info;
int only_deltas;
int use_color_profile;
int draw_anim_background_color;
int canvas_width, canvas_height;
int loop_count;
uint32_t bg_color;
const char* file_name;
WebPData data;
WebPDecoderConfig config;
const WebPDecBuffer* pic;
WebPDemuxer* dmux;
WebPIterator curr_frame;
WebPIterator prev_frame;
WebPChunkIterator iccp;
int viewport_width, viewport_height;
} kParams;
static void ClearPreviousPic(void) {
WebPFreeDecBuffer((WebPDecBuffer*)kParams.pic);
kParams.pic = NULL;
}
static void ClearParams(void) {
ClearPreviousPic();
WebPDataClear(&kParams.data);
WebPDemuxReleaseIterator(&kParams.curr_frame);
WebPDemuxReleaseIterator(&kParams.prev_frame);
WebPDemuxReleaseChunkIterator(&kParams.iccp);
WebPDemuxDelete(kParams.dmux);
kParams.dmux = NULL;
}
// Sets the previous frame to the dimensions of the canvas and has it dispose
// to background to cause the canvas to be cleared.
static void ClearPreviousFrame(void) {
WebPIterator* const prev = &kParams.prev_frame;
prev->width = kParams.canvas_width;
prev->height = kParams.canvas_height;
prev->x_offset = prev->y_offset = 0;
prev->dispose_method = WEBP_MUX_DISPOSE_BACKGROUND;
}
// -----------------------------------------------------------------------------
// Color profile handling
static int ApplyColorProfile(const WebPData* const profile,
WebPDecBuffer* const rgba) {
#ifdef WEBP_HAVE_QCMS
int i, ok = 0;
uint8_t* line;
uint8_t major_revision;
qcms_profile* input_profile = NULL;
qcms_profile* output_profile = NULL;
qcms_transform* transform = NULL;
const qcms_data_type input_type = QCMS_DATA_RGBA_8;
const qcms_data_type output_type = QCMS_DATA_RGBA_8;
const qcms_intent intent = QCMS_INTENT_DEFAULT;
if (profile == NULL || rgba == NULL) return 0;
if (profile->bytes == NULL || profile->size < 10) return 1;
major_revision = profile->bytes[8];
qcms_enable_iccv4();
input_profile = qcms_profile_from_memory(profile->bytes, profile->size);
// qcms_profile_is_bogus() is broken with ICCv4.
if (input_profile == NULL ||
(major_revision < 4 && qcms_profile_is_bogus(input_profile))) {
fprintf(stderr, "Color profile is bogus!\n");
goto Error;
}
output_profile = qcms_profile_sRGB();
if (output_profile == NULL) {
fprintf(stderr, "Error creating output color profile!\n");
goto Error;
}
qcms_profile_precache_output_transform(output_profile);
transform = qcms_transform_create(input_profile, input_type,
output_profile, output_type,
intent);
if (transform == NULL) {
fprintf(stderr, "Error creating color transform!\n");
goto Error;
}
line = rgba->u.RGBA.rgba;
for (i = 0; i < rgba->height; ++i, line += rgba->u.RGBA.stride) {
qcms_transform_data(transform, line, line, rgba->width);
}
ok = 1;
Error:
if (input_profile != NULL) qcms_profile_release(input_profile);
if (output_profile != NULL) qcms_profile_release(output_profile);
if (transform != NULL) qcms_transform_release(transform);
return ok;
#else
(void)profile;
(void)rgba;
return 1;
#endif // WEBP_HAVE_QCMS
}
//------------------------------------------------------------------------------
// File decoding
static int Decode(void) { // Fills kParams.curr_frame
const WebPIterator* const curr = &kParams.curr_frame;
WebPDecoderConfig* const config = &kParams.config;
WebPDecBuffer* const output_buffer = &config->output;
int ok = 0;
ClearPreviousPic();
output_buffer->colorspace = MODE_RGBA;
ok = (WebPDecode(curr->fragment.bytes, curr->fragment.size,
config) == VP8_STATUS_OK);
if (!ok) {
fprintf(stderr, "Decoding of frame #%d failed!\n", curr->frame_num);
} else {
kParams.pic = output_buffer;
if (kParams.use_color_profile) {
ok = ApplyColorProfile(&kParams.iccp.chunk, output_buffer);
if (!ok) {
fprintf(stderr, "Applying color profile to frame #%d failed!\n",
curr->frame_num);
}
}
}
return ok;
}
static void decode_callback(int what) {
if (what == 0 && !kParams.done) {
int duration = 0;
if (kParams.dmux != NULL) {
WebPIterator* const curr = &kParams.curr_frame;
if (!WebPDemuxNextFrame(curr)) {
WebPDemuxReleaseIterator(curr);
if (WebPDemuxGetFrame(kParams.dmux, 1, curr)) {
--kParams.loop_count;
kParams.done = (kParams.loop_count == 0);
if (kParams.done) return;
ClearPreviousFrame();
} else {
kParams.decoding_error = 1;
kParams.done = 1;
return;
}
}
duration = curr->duration;
// Behavior copied from Chrome, cf:
// https://cs.chromium.org/chromium/src/third_party/WebKit/Source/
// platform/graphics/DeferredImageDecoder.cpp?
// rcl=b4c33049f096cd283f32be9a58b9a9e768227c26&l=246
if (duration <= 10) duration = 100;
}
if (!Decode()) {
kParams.decoding_error = 1;
kParams.done = 1;
} else {
glutPostRedisplay();
glutTimerFunc(duration, decode_callback, what);
}
}
}
//------------------------------------------------------------------------------
// Callbacks
static void HandleKey(unsigned char key, int pos_x, int pos_y) {
// Note: rescaling the window or toggling some features during an animation
// generates visual artifacts. This is not fixed because refreshing the frame
// may require rendering the whole animation from start till current frame.
(void)pos_x;
(void)pos_y;
if (key == 'q' || key == 'Q' || key == 27 /* Esc */) {
#ifdef FREEGLUT
glutLeaveMainLoop();
#else
ClearParams();
exit(0);
#endif
} else if (key == 'c') {
if (kParams.has_color_profile && !kParams.decoding_error) {
kParams.use_color_profile = 1 - kParams.use_color_profile;
if (kParams.has_animation) {
// Restart the completed animation to pickup the color profile change.
if (kParams.done && kParams.loop_count == 0) {
kParams.loop_count =
(int)WebPDemuxGetI(kParams.dmux, WEBP_FF_LOOP_COUNT) + 1;
kParams.done = 0;
// Start the decode loop immediately.
glutTimerFunc(0, decode_callback, 0);
}
} else {
Decode();
glutPostRedisplay();
}
}
} else if (key == 'b') {
kParams.draw_anim_background_color = 1 - kParams.draw_anim_background_color;
if (!kParams.has_animation) ClearPreviousFrame();
glutPostRedisplay();
} else if (key == 'i') {
kParams.print_info = 1 - kParams.print_info;
if (!kParams.has_animation) ClearPreviousFrame();
glutPostRedisplay();
} else if (key == 'd') {
kParams.only_deltas = 1 - kParams.only_deltas;
glutPostRedisplay();
}
}
static void HandleReshape(int width, int height) {
// Note: reshape doesn't preserve aspect ratio, and might
// be handling larger-than-screen pictures incorrectly.
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
kParams.viewport_width = width;
kParams.viewport_height = height;
if (!kParams.has_animation) ClearPreviousFrame();
}
static void PrintString(const char* const text) {
void* const font = GLUT_BITMAP_9_BY_15;
int i;
for (i = 0; text[i]; ++i) {
glutBitmapCharacter(font, text[i]);
}
}
static void PrintStringW(const char* const text) {
#if defined(_WIN32) && defined(_UNICODE)
void* const font = GLUT_BITMAP_9_BY_15;
const W_CHAR* const wtext = (const W_CHAR*)text;
int i;
for (i = 0; wtext[i]; ++i) {
glutBitmapCharacter(font, wtext[i]);
}
#else
PrintString(text);
#endif
}
static float GetColorf(uint32_t color, int shift) {
return ((color >> shift) & 0xff) / 255.f;
}
static void DrawCheckerBoard(void) {
const int square_size = 8; // must be a power of 2
int x, y;
GLint viewport[4]; // x, y, width, height
glPushMatrix();
glGetIntegerv(GL_VIEWPORT, viewport);
// shift to integer coordinates with (0,0) being top-left.
glOrtho(0, viewport[2], viewport[3], 0, -1, 1);
for (y = 0; y < viewport[3]; y += square_size) {
for (x = 0; x < viewport[2]; x += square_size) {
const GLubyte color = 128 + 64 * (!((x + y) & square_size));
glColor3ub(color, color, color);
glRecti(x, y, x + square_size, y + square_size);
}
}
glPopMatrix();
}
static void DrawBackground(void) {
// Whole window cleared with clear color, checkerboard rendered on top of it.
glClear(GL_COLOR_BUFFER_BIT);
DrawCheckerBoard();
// ANIM background color rendered (blend) on top. Default is white for still
// images (without ANIM chunk). glClear() can't be used for that (no blend).
if (kParams.draw_anim_background_color) {
glPushMatrix();
glLoadIdentity();
glColor4f(GetColorf(kParams.bg_color, 16), // BGRA from spec
GetColorf(kParams.bg_color, 8),
GetColorf(kParams.bg_color, 0),
GetColorf(kParams.bg_color, 24));
glRecti(-1, -1, +1, +1);
glPopMatrix();
}
}
// Draw background in a scissored rectangle.
static void DrawBackgroundScissored(int window_x, int window_y, int frame_w,
int frame_h) {
// Only update the requested area, not the whole canvas.
window_x = window_x * kParams.viewport_width / kParams.canvas_width;
window_y = window_y * kParams.viewport_height / kParams.canvas_height;
frame_w = frame_w * kParams.viewport_width / kParams.canvas_width;
frame_h = frame_h * kParams.viewport_height / kParams.canvas_height;
// glScissor() takes window coordinates (0,0 at bottom left).
window_y = kParams.viewport_height - window_y - frame_h;
glEnable(GL_SCISSOR_TEST);
glScissor(window_x, window_y, frame_w, frame_h);
DrawBackground();
glDisable(GL_SCISSOR_TEST);
}
static void HandleDisplay(void) {
const WebPDecBuffer* const pic = kParams.pic;
const WebPIterator* const curr = &kParams.curr_frame;
WebPIterator* const prev = &kParams.prev_frame;
GLfloat xoff, yoff;
if (pic == NULL) return;
glPushMatrix();
glPixelZoom((GLfloat)(+1. / kParams.canvas_width * kParams.viewport_width),
(GLfloat)(-1. / kParams.canvas_height * kParams.viewport_height));
xoff = (GLfloat)(2. * curr->x_offset / kParams.canvas_width);
yoff = (GLfloat)(2. * curr->y_offset / kParams.canvas_height);
glRasterPos2f(-1.f + xoff, 1.f - yoff);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glPixelStorei(GL_UNPACK_ROW_LENGTH, pic->u.RGBA.stride / 4);
if (kParams.only_deltas) {
DrawBackground();
} else {
// The rectangle of the previous frame might be different than the current
// frame, so we may need to DrawBackgroundScissored for both.
if (prev->dispose_method == WEBP_MUX_DISPOSE_BACKGROUND) {
// Clear the previous frame rectangle.
DrawBackgroundScissored(prev->x_offset, prev->y_offset, prev->width,
prev->height);
}
if (curr->blend_method == WEBP_MUX_NO_BLEND) {
// We simulate no-blending behavior by first clearing the current frame
// rectangle and then alpha-blending against it.
DrawBackgroundScissored(curr->x_offset, curr->y_offset, curr->width,
curr->height);
}
}
*prev = *curr;
glDrawPixels(pic->width, pic->height,
GL_RGBA, GL_UNSIGNED_BYTE,
(GLvoid*)pic->u.RGBA.rgba);
if (kParams.print_info) {
char tmp[32];
glColor4f(0.90f, 0.0f, 0.90f, 1.0f);
glRasterPos2f(-0.95f, 0.90f);
PrintStringW(kParams.file_name);
snprintf(tmp, sizeof(tmp), "Dimension:%d x %d", pic->width, pic->height);
glColor4f(0.90f, 0.0f, 0.90f, 1.0f);
glRasterPos2f(-0.95f, 0.80f);
PrintString(tmp);
if (curr->x_offset != 0 || curr->y_offset != 0) {
snprintf(tmp, sizeof(tmp), " (offset:%d,%d)",
curr->x_offset, curr->y_offset);
glRasterPos2f(-0.95f, 0.70f);
PrintString(tmp);
}
}
glPopMatrix();
#if defined(__APPLE__) || defined(_WIN32)
glFlush();
#else
glutSwapBuffers();
#endif
}
static void StartDisplay(void) {
int width = kParams.canvas_width;
int height = kParams.canvas_height;
int screen_width, screen_height;
// TODO(webp:365) GLUT_DOUBLE results in flickering / old frames to be
// partially displayed with animated webp + alpha.
#if defined(__APPLE__) || defined(_WIN32)
glutInitDisplayMode(GLUT_RGBA);
#else
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA);
#endif
screen_width = glutGet(GLUT_SCREEN_WIDTH);
screen_height = glutGet(GLUT_SCREEN_HEIGHT);
if (width > screen_width || height > screen_height) {
if (width > screen_width) {
height = (height * screen_width + width - 1) / width;
width = screen_width;
}
if (height > screen_height) {
width = (width * screen_height + height - 1) / height;
height = screen_height;
}
}
glutInitWindowSize(width, height);
glutCreateWindow("WebP viewer");
glutDisplayFunc(HandleDisplay);
glutReshapeFunc(HandleReshape);
glutIdleFunc(NULL);
glutKeyboardFunc(HandleKey);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
glClearColor(0, 0, 0, 0); // window will be cleared to black (no blend)
DrawBackground();
}
//------------------------------------------------------------------------------
// Main
static void Help(void) {
printf(
"Usage: vwebp in_file [options]\n\n"
"Decodes the WebP image file and visualize it using OpenGL\n"
"Options are:\n"
" -version ..... print version number and exit\n"
" -noicc ....... don't use the icc profile if present\n"
" -nofancy ..... don't use the fancy YUV420 upscaler\n"
" -nofilter .... disable in-loop filtering\n"
" -dither <int> dithering strength (0..100), default=50\n"
" -noalphadither disable alpha plane dithering\n"
" -usebgcolor .. display background color\n"
" -mt .......... use multi-threading\n"
" -info ........ print info\n"
" -h ........... this help message\n"
"\n"
"Keyboard shortcuts:\n"
" 'c' ................ toggle use of color profile\n"
" 'b' ................ toggle background color display\n"
" 'i' ................ overlay file information\n"
" 'd' ................ disable blending & disposal (debug)\n"
" 'q' / 'Q' / ESC .... quit\n");
}
int main(int argc, char* argv[]) {
int c;
WebPDecoderConfig* const config = &kParams.config;
WebPIterator* const curr = &kParams.curr_frame;
INIT_WARGV(argc, argv);
if (!WebPInitDecoderConfig(config)) {
fprintf(stderr, "Library version mismatch!\n");
FREE_WARGV_AND_RETURN(-1);
}
config->options.dithering_strength = 50;
config->options.alpha_dithering_strength = 100;
kParams.use_color_profile = 1;
// Background color hidden by default to see transparent areas.
kParams.draw_anim_background_color = 0;
for (c = 1; c < argc; ++c) {
int parse_error = 0;
if (!strcmp(argv[c], "-h") || !strcmp(argv[c], "-help")) {
Help();
FREE_WARGV_AND_RETURN(0);
} else if (!strcmp(argv[c], "-noicc")) {
kParams.use_color_profile = 0;
} else if (!strcmp(argv[c], "-nofancy")) {
config->options.no_fancy_upsampling = 1;
} else if (!strcmp(argv[c], "-nofilter")) {
config->options.bypass_filtering = 1;
} else if (!strcmp(argv[c], "-noalphadither")) {
config->options.alpha_dithering_strength = 0;
} else if (!strcmp(argv[c], "-usebgcolor")) {
kParams.draw_anim_background_color = 1;
} else if (!strcmp(argv[c], "-dither") && c + 1 < argc) {
config->options.dithering_strength =
ExUtilGetInt(argv[++c], 0, &parse_error);
} else if (!strcmp(argv[c], "-info")) {
kParams.print_info = 1;
} else if (!strcmp(argv[c], "-version")) {
const int dec_version = WebPGetDecoderVersion();
const int dmux_version = WebPGetDemuxVersion();
printf("WebP Decoder version: %d.%d.%d\nWebP Demux version: %d.%d.%d\n",
(dec_version >> 16) & 0xff, (dec_version >> 8) & 0xff,
dec_version & 0xff, (dmux_version >> 16) & 0xff,
(dmux_version >> 8) & 0xff, dmux_version & 0xff);
FREE_WARGV_AND_RETURN(0);
} else if (!strcmp(argv[c], "-mt")) {
config->options.use_threads = 1;
} else if (!strcmp(argv[c], "--")) {
if (c < argc - 1) kParams.file_name = (const char*)GET_WARGV(argv, ++c);
break;
} else if (argv[c][0] == '-') {
printf("Unknown option '%s'\n", argv[c]);
Help();
FREE_WARGV_AND_RETURN(-1);
} else {
kParams.file_name = (const char*)GET_WARGV(argv, c);
}
if (parse_error) {
Help();
FREE_WARGV_AND_RETURN(-1);
}
}
if (kParams.file_name == NULL) {
printf("missing input file!!\n");
Help();
FREE_WARGV_AND_RETURN(0);
}
if (!ImgIoUtilReadFile(kParams.file_name,
&kParams.data.bytes, &kParams.data.size)) {
goto Error;
}
if (!WebPGetInfo(kParams.data.bytes, kParams.data.size, NULL, NULL)) {
fprintf(stderr, "Input file doesn't appear to be WebP format.\n");
goto Error;
}
kParams.dmux = WebPDemux(&kParams.data);
if (kParams.dmux == NULL) {
fprintf(stderr, "Could not create demuxing object!\n");
goto Error;
}
kParams.canvas_width = WebPDemuxGetI(kParams.dmux, WEBP_FF_CANVAS_WIDTH);
kParams.canvas_height = WebPDemuxGetI(kParams.dmux, WEBP_FF_CANVAS_HEIGHT);
if (kParams.print_info) {
printf("Canvas: %d x %d\n", kParams.canvas_width, kParams.canvas_height);
}
ClearPreviousFrame();
memset(&kParams.iccp, 0, sizeof(kParams.iccp));
kParams.has_color_profile =
!!(WebPDemuxGetI(kParams.dmux, WEBP_FF_FORMAT_FLAGS) & ICCP_FLAG);
if (kParams.has_color_profile) {
#ifdef WEBP_HAVE_QCMS
if (!WebPDemuxGetChunk(kParams.dmux, "ICCP", 1, &kParams.iccp)) goto Error;
printf("VP8X: Found color profile\n");
#else
fprintf(stderr, "Warning: color profile present, but qcms is unavailable!\n"
"Build libqcms from Mozilla or Chromium and define WEBP_HAVE_QCMS "
"before building.\n");
#endif
}
if (!WebPDemuxGetFrame(kParams.dmux, 1, curr)) goto Error;
kParams.has_animation = (curr->num_frames > 1);
kParams.loop_count = (int)WebPDemuxGetI(kParams.dmux, WEBP_FF_LOOP_COUNT);
kParams.bg_color = WebPDemuxGetI(kParams.dmux, WEBP_FF_BACKGROUND_COLOR);
printf("VP8X: Found %d images in file (loop count = %d)\n",
curr->num_frames, kParams.loop_count);
// Decode first frame
if (!Decode()) goto Error;
// Position iterator to last frame. Next call to HandleDisplay will wrap over.
// We take this into account by bumping up loop_count.
WebPDemuxGetFrame(kParams.dmux, 0, curr);
if (kParams.loop_count) ++kParams.loop_count;
#if defined(__unix__) || defined(__CYGWIN__)
// Work around GLUT compositor bug.
// https://bugs.launchpad.net/ubuntu/+source/freeglut/+bug/369891
setenv("XLIB_SKIP_ARGB_VISUALS", "1", 1);
#endif
// Start display (and timer)
glutInit(&argc, argv);
#ifdef FREEGLUT
glutSetOption(GLUT_ACTION_ON_WINDOW_CLOSE, GLUT_ACTION_CONTINUE_EXECUTION);
#endif
StartDisplay();
if (kParams.has_animation) glutTimerFunc(0, decode_callback, 0);
glutMainLoop();
// Should only be reached when using FREEGLUT:
ClearParams();
FREE_WARGV_AND_RETURN(0);
Error:
ClearParams();
FREE_WARGV_AND_RETURN(-1);
}
#else // !WEBP_HAVE_GL
int main(int argc, const char* argv[]) {
fprintf(stderr, "OpenGL support not enabled in %s.\n", argv[0]);
(void)argc;
return 0;
}
#endif
//------------------------------------------------------------------------------

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external/libwebp/libwebp/examples/webpinfo.c vendored
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1234
external/libwebp/libwebp/examples/webpmux.c vendored
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44
external/libwebp/libwebp/extras/Makefile.am vendored
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@ -1,44 +0,0 @@
AM_CPPFLAGS += -I$(top_builddir) -I$(top_srcdir)
AM_CPPFLAGS += -I$(top_builddir)/src -I$(top_srcdir)/src
noinst_LTLIBRARIES = libwebpextras.la
noinst_HEADERS =
noinst_HEADERS += ../src/webp/types.h
libwebpextras_la_SOURCES =
libwebpextras_la_SOURCES += extras.c extras.h quality_estimate.c
libwebpextras_la_CPPFLAGS = $(AM_CPPFLAGS)
libwebpextras_la_LDFLAGS = -lm
libwebpextras_la_LIBADD = ../src/libwebp.la
noinst_PROGRAMS =
noinst_PROGRAMS += webp_quality
if BUILD_DEMUX
noinst_PROGRAMS += get_disto
endif
if BUILD_VWEBP_SDL
noinst_PROGRAMS += vwebp_sdl
endif
get_disto_SOURCES = get_disto.c
get_disto_CPPFLAGS = $(AM_CPPFLAGS)
get_disto_LDADD =
get_disto_LDADD += ../imageio/libimageio_util.la
get_disto_LDADD += ../imageio/libimagedec.la
get_disto_LDADD += ../src/libwebp.la
get_disto_LDADD += $(PNG_LIBS) $(JPEG_LIBS) $(TIFF_LIBS)
webp_quality_SOURCES = webp_quality.c
webp_quality_CPPFLAGS = $(AM_CPPFLAGS)
webp_quality_LDADD =
webp_quality_LDADD += ../imageio/libimageio_util.la
webp_quality_LDADD += libwebpextras.la
webp_quality_LDADD += ../src/libwebp.la
vwebp_sdl_SOURCES = vwebp_sdl.c webp_to_sdl.c webp_to_sdl.h
vwebp_sdl_CPPFLAGS = $(AM_CPPFLAGS) $(SDL_INCLUDES)
vwebp_sdl_LDADD =
vwebp_sdl_LDADD += ../imageio/libimageio_util.la
vwebp_sdl_LDADD += ../src/libwebp.la
vwebp_sdl_LDADD += $(SDL_LIBS)

162
external/libwebp/libwebp/extras/extras.c vendored
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@ -1,162 +0,0 @@
// Copyright 2015 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Additional WebP utilities.
//
#include "extras/extras.h"
#include "webp/format_constants.h"
#include "src/dsp/dsp.h"
#include <assert.h>
#include <string.h>
#define XTRA_MAJ_VERSION 1
#define XTRA_MIN_VERSION 3
#define XTRA_REV_VERSION 1
//------------------------------------------------------------------------------
int WebPGetExtrasVersion(void) {
return (XTRA_MAJ_VERSION << 16) | (XTRA_MIN_VERSION << 8) | XTRA_REV_VERSION;
}
//------------------------------------------------------------------------------
int WebPImportGray(const uint8_t* gray_data, WebPPicture* pic) {
int y, width, uv_width;
if (pic == NULL || gray_data == NULL) return 0;
pic->colorspace = WEBP_YUV420;
if (!WebPPictureAlloc(pic)) return 0;
width = pic->width;
uv_width = (width + 1) >> 1;
for (y = 0; y < pic->height; ++y) {
memcpy(pic->y + y * pic->y_stride, gray_data, width);
gray_data += width; // <- we could use some 'data_stride' here if needed
if ((y & 1) == 0) {
memset(pic->u + (y >> 1) * pic->uv_stride, 128, uv_width);
memset(pic->v + (y >> 1) * pic->uv_stride, 128, uv_width);
}
}
return 1;
}
int WebPImportRGB565(const uint8_t* rgb565, WebPPicture* pic) {
int x, y;
uint32_t* dst;
if (pic == NULL || rgb565 == NULL) return 0;
pic->colorspace = WEBP_YUV420;
pic->use_argb = 1;
if (!WebPPictureAlloc(pic)) return 0;
dst = pic->argb;
for (y = 0; y < pic->height; ++y) {
const int width = pic->width;
for (x = 0; x < width; ++x) {
#if defined(WEBP_SWAP_16BIT_CSP) && (WEBP_SWAP_16BIT_CSP == 1)
const uint32_t rg = rgb565[2 * x + 1];
const uint32_t gb = rgb565[2 * x + 0];
#else
const uint32_t rg = rgb565[2 * x + 0];
const uint32_t gb = rgb565[2 * x + 1];
#endif
uint32_t r = rg & 0xf8;
uint32_t g = ((rg << 5) | (gb >> 3)) & 0xfc;
uint32_t b = (gb << 5);
// dithering
r = r | (r >> 5);
g = g | (g >> 6);
b = b | (b >> 5);
dst[x] = (0xffu << 24) | (r << 16) | (g << 8) | b;
}
rgb565 += 2 * width;
dst += pic->argb_stride;
}
return 1;
}
int WebPImportRGB4444(const uint8_t* rgb4444, WebPPicture* pic) {
int x, y;
uint32_t* dst;
if (pic == NULL || rgb4444 == NULL) return 0;
pic->colorspace = WEBP_YUV420;
pic->use_argb = 1;
if (!WebPPictureAlloc(pic)) return 0;
dst = pic->argb;
for (y = 0; y < pic->height; ++y) {
const int width = pic->width;
for (x = 0; x < width; ++x) {
#if defined(WEBP_SWAP_16BIT_CSP) && (WEBP_SWAP_16BIT_CSP == 1)
const uint32_t rg = rgb4444[2 * x + 1];
const uint32_t ba = rgb4444[2 * x + 0];
#else
const uint32_t rg = rgb4444[2 * x + 0];
const uint32_t ba = rgb4444[2 * x + 1];
#endif
uint32_t r = rg & 0xf0;
uint32_t g = (rg << 4);
uint32_t b = (ba & 0xf0);
uint32_t a = (ba << 4);
// dithering
r = r | (r >> 4);
g = g | (g >> 4);
b = b | (b >> 4);
a = a | (a >> 4);
dst[x] = (a << 24) | (r << 16) | (g << 8) | b;
}
rgb4444 += 2 * width;
dst += pic->argb_stride;
}
return 1;
}
int WebPImportColorMappedARGB(const uint8_t* indexed, int indexed_stride,
const uint32_t palette[], int palette_size,
WebPPicture* pic) {
int x, y;
uint32_t* dst;
// 256 as the input buffer is uint8_t.
assert(MAX_PALETTE_SIZE <= 256);
if (pic == NULL || indexed == NULL || indexed_stride < pic->width ||
palette == NULL || palette_size > MAX_PALETTE_SIZE || palette_size <= 0) {
return 0;
}
pic->use_argb = 1;
if (!WebPPictureAlloc(pic)) return 0;
dst = pic->argb;
for (y = 0; y < pic->height; ++y) {
for (x = 0; x < pic->width; ++x) {
// Make sure we are within the palette.
if (indexed[x] >= palette_size) {
WebPPictureFree(pic);
return 0;
}
dst[x] = palette[indexed[x]];
}
indexed += indexed_stride;
dst += pic->argb_stride;
}
return 1;
}
//------------------------------------------------------------------------------
int WebPUnmultiplyARGB(WebPPicture* pic) {
int y;
uint32_t* dst;
if (pic == NULL || pic->use_argb != 1 || pic->argb == NULL) return 0;
WebPInitAlphaProcessing();
dst = pic->argb;
for (y = 0; y < pic->height; ++y) {
WebPMultARGBRow(dst, pic->width, /*inverse=*/1);
dst += pic->argb_stride;
}
return 1;
}
//------------------------------------------------------------------------------

77
external/libwebp/libwebp/extras/extras.h vendored
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@ -1,77 +0,0 @@
// Copyright 2015 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
#ifndef WEBP_EXTRAS_EXTRAS_H_
#define WEBP_EXTRAS_EXTRAS_H_
#include "webp/types.h"
#ifdef __cplusplus
extern "C" {
#endif
#include "webp/encode.h"
#define WEBP_EXTRAS_ABI_VERSION 0x0002 // MAJOR(8b) + MINOR(8b)
//------------------------------------------------------------------------------
// Returns the version number of the extras library, packed in hexadecimal using
// 8bits for each of major/minor/revision. E.g: v2.5.7 is 0x020507.
WEBP_EXTERN int WebPGetExtrasVersion(void);
//------------------------------------------------------------------------------
// Ad-hoc colorspace importers.
// Import luma sample (gray scale image) into 'picture'. The 'picture'
// width and height must be set prior to calling this function.
WEBP_EXTERN int WebPImportGray(const uint8_t* gray, WebPPicture* picture);
// Import rgb sample in RGB565 packed format into 'picture'. The 'picture'
// width and height must be set prior to calling this function.
WEBP_EXTERN int WebPImportRGB565(const uint8_t* rgb565, WebPPicture* pic);
// Import rgb sample in RGB4444 packed format into 'picture'. The 'picture'
// width and height must be set prior to calling this function.
WEBP_EXTERN int WebPImportRGB4444(const uint8_t* rgb4444, WebPPicture* pic);
// Import a color mapped image. The number of colors is less or equal to
// MAX_PALETTE_SIZE. 'pic' must have been initialized. Its content, if any,
// will be discarded. Returns 'false' in case of error, or if indexed[] contains
// invalid indices.
WEBP_EXTERN int
WebPImportColorMappedARGB(const uint8_t* indexed, int indexed_stride,
const uint32_t palette[], int palette_size,
WebPPicture* pic);
// Convert the ARGB content of 'pic' from associated to unassociated.
// 'pic' can be for instance the result of calling of some WebPPictureImportXXX
// functions, with pic->use_argb set to 'true'. It is assumed (and not checked)
// that the pre-multiplied r/g/b values as less or equal than the alpha value.
// Return false in case of error (invalid parameter, ...).
WEBP_EXTERN int WebPUnmultiplyARGB(WebPPicture* pic);
//------------------------------------------------------------------------------
// Parse a bitstream, search for VP8 (lossy) header and report a
// rough estimation of the quality factor used for compressing the bitstream.
// If the bitstream is in lossless format, the special value '101' is returned.
// Otherwise (lossy bitstream), the returned value is in the range [0..100].
// Any error (invalid bitstream, animated WebP, incomplete header, etc.)
// will return a value of -1.
WEBP_EXTERN int VP8EstimateQuality(const uint8_t* const data, size_t size);
//------------------------------------------------------------------------------
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_EXTRAS_EXTRAS_H_

356
external/libwebp/libwebp/extras/get_disto.c vendored
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@ -1,356 +0,0 @@
// Copyright 2016 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Simple tool to load two webp/png/jpg/tiff files and compute PSNR/SSIM.
// This is mostly a wrapper around WebPPictureDistortion().
//
/*
gcc -o get_disto get_disto.c -O3 -I../ -L../examples -L../imageio \
-lexample_util -limageio_util -limagedec -lwebp -L/opt/local/lib \
-lpng -lz -ljpeg -ltiff -lm -lpthread
*/
//
// Author: Skal (pascal.massimino@gmail.com)
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "webp/encode.h"
#include "imageio/image_dec.h"
#include "imageio/imageio_util.h"
#include "../examples/unicode.h"
static size_t ReadPicture(const char* const filename, WebPPicture* const pic,
int keep_alpha) {
const uint8_t* data = NULL;
size_t data_size = 0;
WebPImageReader reader = NULL;
int ok = ImgIoUtilReadFile(filename, &data, &data_size);
if (!ok) goto End;
pic->use_argb = 1; // force ARGB
#ifdef HAVE_WINCODEC_H
// Try to decode the file using WIC falling back to the other readers for
// e.g., WebP.
ok = ReadPictureWithWIC(filename, pic, keep_alpha, NULL);
if (ok) goto End;
#endif
reader = WebPGuessImageReader(data, data_size);
ok = reader(data, data_size, pic, keep_alpha, NULL);
End:
if (!ok) {
WFPRINTF(stderr, "Error! Could not process file %s\n",
(const W_CHAR*)filename);
}
free((void*)data);
return ok ? data_size : 0;
}
static void RescalePlane(uint8_t* plane, int width, int height,
int x_stride, int y_stride, int max) {
const uint32_t factor = (max > 0) ? (255u << 16) / max : 0;
int x, y;
for (y = 0; y < height; ++y) {
uint8_t* const ptr = plane + y * y_stride;
for (x = 0; x < width * x_stride; x += x_stride) {
const uint32_t diff = (ptr[x] * factor + (1 << 15)) >> 16;
ptr[x] = diff;
}
}
}
// Return the max absolute difference.
static int DiffScaleChannel(uint8_t* src1, int stride1,
const uint8_t* src2, int stride2,
int x_stride, int w, int h, int do_scaling) {
int x, y;
int max = 0;
for (y = 0; y < h; ++y) {
uint8_t* const ptr1 = src1 + y * stride1;
const uint8_t* const ptr2 = src2 + y * stride2;
for (x = 0; x < w * x_stride; x += x_stride) {
const int diff = abs(ptr1[x] - ptr2[x]);
if (diff > max) max = diff;
ptr1[x] = diff;
}
}
if (do_scaling) RescalePlane(src1, w, h, x_stride, stride1, max);
return max;
}
//------------------------------------------------------------------------------
// SSIM calculation. We re-implement these functions here, out of dsp/, to avoid
// breaking the library's hidden visibility. This code duplication avoids the
// bigger annoyance of having to open up internal details of libdsp...
#define SSIM_KERNEL 3 // total size of the kernel: 2 * SSIM_KERNEL + 1
// struct for accumulating statistical moments
typedef struct {
uint32_t w; // sum(w_i) : sum of weights
uint32_t xm, ym; // sum(w_i * x_i), sum(w_i * y_i)
uint32_t xxm, xym, yym; // sum(w_i * x_i * x_i), etc.
} DistoStats;
// hat-shaped filter. Sum of coefficients is equal to 16.
static const uint32_t kWeight[2 * SSIM_KERNEL + 1] = { 1, 2, 3, 4, 3, 2, 1 };
static WEBP_INLINE double SSIMCalculation(const DistoStats* const stats) {
const uint32_t N = stats->w;
const uint32_t w2 = N * N;
const uint32_t C1 = 20 * w2;
const uint32_t C2 = 60 * w2;
const uint32_t C3 = 8 * 8 * w2; // 'dark' limit ~= 6
const uint64_t xmxm = (uint64_t)stats->xm * stats->xm;
const uint64_t ymym = (uint64_t)stats->ym * stats->ym;
if (xmxm + ymym >= C3) {
const int64_t xmym = (int64_t)stats->xm * stats->ym;
const int64_t sxy = (int64_t)stats->xym * N - xmym; // can be negative
const uint64_t sxx = (uint64_t)stats->xxm * N - xmxm;
const uint64_t syy = (uint64_t)stats->yym * N - ymym;
// we descale by 8 to prevent overflow during the fnum/fden multiply.
const uint64_t num_S = (2 * (uint64_t)(sxy < 0 ? 0 : sxy) + C2) >> 8;
const uint64_t den_S = (sxx + syy + C2) >> 8;
const uint64_t fnum = (2 * xmym + C1) * num_S;
const uint64_t fden = (xmxm + ymym + C1) * den_S;
const double r = (double)fnum / fden;
assert(r >= 0. && r <= 1.0);
return r;
}
return 1.; // area is too dark to contribute meaningfully
}
static double SSIMGetClipped(const uint8_t* src1, int stride1,
const uint8_t* src2, int stride2,
int xo, int yo, int W, int H) {
DistoStats stats = { 0, 0, 0, 0, 0, 0 };
const int ymin = (yo - SSIM_KERNEL < 0) ? 0 : yo - SSIM_KERNEL;
const int ymax = (yo + SSIM_KERNEL > H - 1) ? H - 1 : yo + SSIM_KERNEL;
const int xmin = (xo - SSIM_KERNEL < 0) ? 0 : xo - SSIM_KERNEL;
const int xmax = (xo + SSIM_KERNEL > W - 1) ? W - 1 : xo + SSIM_KERNEL;
int x, y;
src1 += ymin * stride1;
src2 += ymin * stride2;
for (y = ymin; y <= ymax; ++y, src1 += stride1, src2 += stride2) {
for (x = xmin; x <= xmax; ++x) {
const uint32_t w = kWeight[SSIM_KERNEL + x - xo]
* kWeight[SSIM_KERNEL + y - yo];
const uint32_t s1 = src1[x];
const uint32_t s2 = src2[x];
stats.w += w;
stats.xm += w * s1;
stats.ym += w * s2;
stats.xxm += w * s1 * s1;
stats.xym += w * s1 * s2;
stats.yym += w * s2 * s2;
}
}
return SSIMCalculation(&stats);
}
// Compute SSIM-score map. Return -1 in case of error, max diff otherwise.
static int SSIMScaleChannel(uint8_t* src1, int stride1,
const uint8_t* src2, int stride2,
int x_stride, int w, int h, int do_scaling) {
int x, y;
int max = 0;
uint8_t* const plane1 = (uint8_t*)malloc(2 * w * h * sizeof(*plane1));
uint8_t* const plane2 = plane1 + w * h;
if (plane1 == NULL) return -1;
// extract plane
for (y = 0; y < h; ++y) {
for (x = 0; x < w; ++x) {
plane1[x + y * w] = src1[x * x_stride + y * stride1];
plane2[x + y * w] = src2[x * x_stride + y * stride2];
}
}
for (y = 0; y < h; ++y) {
for (x = 0; x < w; ++x) {
const double ssim = SSIMGetClipped(plane1, w, plane2, w, x, y, w, h);
int diff = (int)(255 * (1. - ssim));
if (diff < 0) {
diff = 0;
} else if (diff > max) {
max = diff;
}
src1[x * x_stride + y * stride1] = (diff > 255) ? 255u : (uint8_t)diff;
}
}
free(plane1);
if (do_scaling) RescalePlane(src1, w, h, x_stride, stride1, max);
return max;
}
// Convert an argb picture to luminance.
static void ConvertToGray(WebPPicture* const pic) {
int x, y;
assert(pic != NULL);
assert(pic->use_argb);
for (y = 0; y < pic->height; ++y) {
uint32_t* const row = &pic->argb[y * pic->argb_stride];
for (x = 0; x < pic->width; ++x) {
const uint32_t argb = row[x];
const uint32_t r = (argb >> 16) & 0xff;
const uint32_t g = (argb >> 8) & 0xff;
const uint32_t b = (argb >> 0) & 0xff;
// We use BT.709 for converting to luminance.
const uint32_t Y = (uint32_t)(0.2126 * r + 0.7152 * g + 0.0722 * b + .5);
row[x] = (argb & 0xff000000u) | (Y * 0x010101u);
}
}
}
static void Help(void) {
fprintf(stderr,
"Usage: get_disto [-ssim][-psnr][-alpha] compressed.webp orig.webp\n"
" -ssim ..... print SSIM distortion\n"
" -psnr ..... print PSNR distortion (default)\n"
" -alpha .... preserve alpha plane\n"
" -h ........ this message\n"
" -o <file> . save the diff map as a WebP lossless file\n"
" -scale .... scale the difference map to fit [0..255] range\n"
" -gray ..... use grayscale for difference map (-scale)\n"
"\nSupported input formats:\n %s\n",
WebPGetEnabledInputFileFormats());
}
int main(int argc, const char* argv[]) {
WebPPicture pic1, pic2;
size_t size1 = 0, size2 = 0;
int ret = 1;
float disto[5];
int type = 0;
int c;
int help = 0;
int keep_alpha = 0;
int scale = 0;
int use_gray = 0;
const char* name1 = NULL;
const char* name2 = NULL;
const char* output = NULL;
INIT_WARGV(argc, argv);
if (!WebPPictureInit(&pic1) || !WebPPictureInit(&pic2)) {
fprintf(stderr, "Can't init pictures\n");
FREE_WARGV_AND_RETURN(1);
}
for (c = 1; c < argc; ++c) {
if (!strcmp(argv[c], "-ssim")) {
type = 1;
} else if (!strcmp(argv[c], "-psnr")) {
type = 0;
} else if (!strcmp(argv[c], "-alpha")) {
keep_alpha = 1;
} else if (!strcmp(argv[c], "-scale")) {
scale = 1;
} else if (!strcmp(argv[c], "-gray")) {
use_gray = 1;
} else if (!strcmp(argv[c], "-h")) {
help = 1;
ret = 0;
} else if (!strcmp(argv[c], "-o")) {
if (++c == argc) {
fprintf(stderr, "missing file name after %s option.\n", argv[c - 1]);
goto End;
}
output = (const char*)GET_WARGV(argv, c);
} else if (name1 == NULL) {
name1 = (const char*)GET_WARGV(argv, c);
} else {
name2 = (const char*)GET_WARGV(argv, c);
}
}
if (help || name1 == NULL || name2 == NULL) {
if (!help) {
fprintf(stderr, "Error: missing arguments.\n");
}
Help();
goto End;
}
size1 = ReadPicture(name1, &pic1, 1);
size2 = ReadPicture(name2, &pic2, 1);
if (size1 == 0 || size2 == 0) goto End;
if (!keep_alpha) {
WebPBlendAlpha(&pic1, 0x00000000);
WebPBlendAlpha(&pic2, 0x00000000);
}
if (!WebPPictureDistortion(&pic1, &pic2, type, disto)) {
fprintf(stderr, "Error while computing the distortion.\n");
goto End;
}
printf("%u %.2f %.2f %.2f %.2f %.2f [ %.2f bpp ]\n",
(unsigned int)size1,
disto[4], disto[0], disto[1], disto[2], disto[3],
8.f * size1 / pic1.width / pic1.height);
if (output != NULL) {
uint8_t* data = NULL;
size_t data_size = 0;
if (pic1.use_argb != pic2.use_argb) {
fprintf(stderr, "Pictures are not in the same argb format. "
"Can't save the difference map.\n");
goto End;
}
if (pic1.use_argb) {
int n;
fprintf(stderr, "max differences per channel: ");
for (n = 0; n < 3; ++n) { // skip the alpha channel
const int range = (type == 1) ?
SSIMScaleChannel((uint8_t*)pic1.argb + n, pic1.argb_stride * 4,
(const uint8_t*)pic2.argb + n, pic2.argb_stride * 4,
4, pic1.width, pic1.height, scale) :
DiffScaleChannel((uint8_t*)pic1.argb + n, pic1.argb_stride * 4,
(const uint8_t*)pic2.argb + n, pic2.argb_stride * 4,
4, pic1.width, pic1.height, scale);
if (range < 0) fprintf(stderr, "\nError computing diff map\n");
fprintf(stderr, "[%d]", range);
}
fprintf(stderr, "\n");
if (use_gray) ConvertToGray(&pic1);
} else {
fprintf(stderr, "Can only compute the difference map in ARGB format.\n");
goto End;
}
#if !defined(WEBP_REDUCE_CSP)
data_size = WebPEncodeLosslessBGRA((const uint8_t*)pic1.argb,
pic1.width, pic1.height,
pic1.argb_stride * 4,
&data);
if (data_size == 0) {
fprintf(stderr, "Error during lossless encoding.\n");
goto End;
}
ret = ImgIoUtilWriteFile(output, data, data_size) ? 0 : 1;
WebPFree(data);
if (ret) goto End;
#else
(void)data;
(void)data_size;
fprintf(stderr, "Cannot save the difference map. Please recompile "
"without the WEBP_REDUCE_CSP flag.\n");
#endif // WEBP_REDUCE_CSP
}
ret = 0;
End:
WebPPictureFree(&pic1);
WebPPictureFree(&pic2);
FREE_WARGV_AND_RETURN(ret);
}

129
external/libwebp/libwebp/extras/quality_estimate.c vendored
View File

@ -1,129 +0,0 @@
// Copyright 2016 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// VP8EstimateQuality(): rough encoding quality estimate
//
// Author: Skal (pascal.massimino@gmail.com)
#include "extras/extras.h"
#include "webp/decode.h"
#include <math.h>
//------------------------------------------------------------------------------
#define INVALID_BIT_POS (1ull << 63)
// In most cases, we don't need to use a full arithmetic decoder, since
// all the header's bits are written using a uniform probability of 128.
// We can just parse the header as if it was bits (works in 99.999% cases).
static WEBP_INLINE uint32_t GetBit(const uint8_t* const data, size_t nb,
uint64_t max_size, uint64_t* const bit_pos) {
uint32_t val = 0;
if (*bit_pos + nb <= 8 * max_size) {
while (nb-- > 0) {
const uint64_t p = (*bit_pos)++;
const int bit = !!(data[p >> 3] & (128 >> ((p & 7))));
val = (val << 1) | bit;
}
} else {
*bit_pos = INVALID_BIT_POS;
}
return val;
}
#define GET_BIT(n) GetBit(data, (n), size, &bit_pos)
#define CONDITIONAL_SKIP(n) (GET_BIT(1) ? GET_BIT((n)) : 0)
int VP8EstimateQuality(const uint8_t* const data, size_t size) {
size_t pos = 0;
uint64_t bit_pos;
uint64_t sig = 0x00;
int ok = 0;
int Q = -1;
WebPBitstreamFeatures features;
if (data == NULL) return -1;
if (WebPGetFeatures(data, size, &features) != VP8_STATUS_OK) {
return -1; // invalid file
}
if (features.format == 2) return 101; // lossless
if (features.format == 0 || features.has_animation) return -1; // mixed
while (pos < size) {
sig = (sig >> 8) | ((uint64_t)data[pos++] << 40);
if ((sig >> 24) == 0x2a019dull) {
ok = 1;
break;
}
}
if (!ok) return -1;
if (pos + 4 > size) return -1;
// Skip main Header
// width = (data[pos + 0] | (data[pos + 1] << 8)) & 0x3fff;
// height = (data[pos + 2] | (data[pos + 3] << 8)) & 0x3fff;
pos += 4;
bit_pos = pos * 8;
GET_BIT(2); // colorspace + clamp type
// Segment header
if (GET_BIT(1)) { // use_segment_
int s;
const int update_map = GET_BIT(1);
if (GET_BIT(1)) { // update data
const int absolute_delta = GET_BIT(1);
int q[4] = { 0, 0, 0, 0 };
for (s = 0; s < 4; ++s) {
if (GET_BIT(1)) {
q[s] = GET_BIT(7);
if (GET_BIT(1)) q[s] = -q[s]; // sign
}
}
if (absolute_delta) Q = q[0]; // just use the first segment's quantizer
for (s = 0; s < 4; ++s) CONDITIONAL_SKIP(7); // filter strength
}
if (update_map) {
for (s = 0; s < 3; ++s) CONDITIONAL_SKIP(8);
}
}
// Filter header
GET_BIT(1 + 6 + 3); // simple + level + sharpness
if (GET_BIT(1)) { // use_lf_delta
if (GET_BIT(1)) { // update lf_delta?
int n;
for (n = 0; n < 4 + 4; ++n) CONDITIONAL_SKIP(6);
}
}
// num partitions
GET_BIT(2);
// ParseQuant
{
const int base_q = GET_BIT(7);
/* dqy1_dc = */ CONDITIONAL_SKIP(5);
/* dqy2_dc = */ CONDITIONAL_SKIP(5);
/* dqy2_ac = */ CONDITIONAL_SKIP(5);
/* dquv_dc = */ CONDITIONAL_SKIP(5);
/* dquv_ac = */ CONDITIONAL_SKIP(5);
if (Q < 0) Q = base_q;
}
if (bit_pos == INVALID_BIT_POS) return -1;
// base mapping
Q = (127 - Q) * 100 / 127;
// correction for power-law behavior in low range
if (Q < 80) {
Q = (int)(pow(Q / 80., 1. / 0.38) * 80);
}
return Q;
}

101
external/libwebp/libwebp/extras/vwebp_sdl.c vendored
View File

@ -1,101 +0,0 @@
// Copyright 2017 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Simple SDL-based WebP file viewer.
// Does not support animation, just static images.
//
// Press 'q' to exit.
//
// Author: James Zern (jzern@google.com)
#include <stdio.h>
#ifdef HAVE_CONFIG_H
#include "webp/config.h"
#endif
#if defined(WEBP_HAVE_SDL)
#include "webp_to_sdl.h"
#include "webp/decode.h"
#include "imageio/imageio_util.h"
#include "../examples/unicode.h"
#if defined(WEBP_HAVE_JUST_SDL_H)
#include <SDL.h>
#else
#include <SDL/SDL.h>
#endif
static void ProcessEvents(void) {
int done = 0;
SDL_Event event;
while (!done && SDL_WaitEvent(&event)) {
switch (event.type) {
case SDL_KEYUP:
switch (event.key.keysym.sym) {
case SDLK_q: done = 1; break;
default: break;
}
break;
default: break;
}
}
}
int main(int argc, char* argv[]) {
int c;
int ok = 0;
INIT_WARGV(argc, argv);
for (c = 1; c < argc; ++c) {
const char* file = NULL;
const uint8_t* webp = NULL;
size_t webp_size = 0;
if (!strcmp(argv[c], "-h")) {
printf("Usage: %s [-h] image.webp [more_files.webp...]\n", argv[0]);
FREE_WARGV_AND_RETURN(0);
} else {
file = (const char*)GET_WARGV(argv, c);
}
if (file == NULL) continue;
if (!ImgIoUtilReadFile(file, &webp, &webp_size)) {
WFPRINTF(stderr, "Error opening file: %s\n", (const W_CHAR*)file);
goto Error;
}
if (webp_size != (size_t)(int)webp_size) {
free((void*)webp);
fprintf(stderr, "File too large.\n");
goto Error;
}
ok = WebPToSDL((const char*)webp, (int)webp_size);
free((void*)webp);
if (!ok) {
WFPRINTF(stderr, "Error decoding file %s\n", (const W_CHAR*)file);
goto Error;
}
ProcessEvents();
}
ok = 1;
Error:
SDL_Quit();
FREE_WARGV_AND_RETURN(ok ? 0 : 1);
}
#else // !WEBP_HAVE_SDL
int main(int argc, const char* argv[]) {
fprintf(stderr, "SDL support not enabled in %s.\n", argv[0]);
(void)argc;
return 0;
}
#endif

54
external/libwebp/libwebp/extras/webp_quality.c vendored
View File

@ -1,54 +0,0 @@
// Simple tool to roughly evaluate the quality encoding of a webp bitstream
//
// Result is a *rough* estimation of the quality. You should just consider
// the bucket it's in (q > 80? > 50? > 20?) and not take it for face value.
/*
gcc -o webp_quality webp_quality.c -O3 -I../ -L. -L../imageio \
-limageio_util -lwebpextras -lwebp -lm -lpthread
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "extras/extras.h"
#include "imageio/imageio_util.h"
#include "../examples/unicode.h"
int main(int argc, const char* argv[]) {
int c;
int quiet = 0;
int ok = 1;
INIT_WARGV(argc, argv);
for (c = 1; ok && c < argc; ++c) {
if (!strcmp(argv[c], "-quiet")) {
quiet = 1;
} else if (!strcmp(argv[c], "-help") || !strcmp(argv[c], "-h")) {
printf("webp_quality [-h][-quiet] webp_files...\n");
FREE_WARGV_AND_RETURN(0);
} else {
const char* const filename = (const char*)GET_WARGV(argv, c);
const uint8_t* data = NULL;
size_t data_size = 0;
int q;
ok = ImgIoUtilReadFile(filename, &data, &data_size);
if (!ok) break;
q = VP8EstimateQuality(data, data_size);
if (!quiet) WPRINTF("[%s] ", (const W_CHAR*)filename);
if (q < 0) {
fprintf(stderr, "Not a WebP file, or not a lossy WebP file.\n");
ok = 0;
} else {
if (!quiet) {
printf("Estimated quality factor: %d\n", q);
} else {
printf("%d\n", q); // just print the number
}
}
free((void*)data);
}
}
FREE_WARGV_AND_RETURN(ok ? 0 : 1);
}

110
external/libwebp/libwebp/extras/webp_to_sdl.c vendored
View File

@ -1,110 +0,0 @@
// Copyright 2017 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Simple WebP-to-SDL wrapper. Useful for emscripten.
//
// Author: James Zern (jzern@google.com)
#ifdef HAVE_CONFIG_H
#include "src/webp/config.h"
#endif
#if defined(WEBP_HAVE_SDL)
#include "webp_to_sdl.h"
#include <stdio.h>
#include "src/webp/decode.h"
#if defined(WEBP_HAVE_JUST_SDL_H)
#include <SDL.h>
#else
#include <SDL/SDL.h>
#endif
static int init_ok = 0;
int WebPToSDL(const char* data, unsigned int data_size) {
int ok = 0;
VP8StatusCode status;
WebPDecoderConfig config;
WebPBitstreamFeatures* const input = &config.input;
WebPDecBuffer* const output = &config.output;
SDL_Surface* screen = NULL;
SDL_Surface* surface = NULL;
if (!WebPInitDecoderConfig(&config)) {
fprintf(stderr, "Library version mismatch!\n");
return 0;
}
if (!init_ok) {
SDL_Init(SDL_INIT_VIDEO);
init_ok = 1;
}
status = WebPGetFeatures((uint8_t*)data, (size_t)data_size, &config.input);
if (status != VP8_STATUS_OK) goto Error;
screen = SDL_SetVideoMode(input->width, input->height, 32, SDL_SWSURFACE);
if (screen == NULL) {
fprintf(stderr, "Unable to set video mode (32bpp %dx%d)!\n",
input->width, input->height);
goto Error;
}
surface = SDL_CreateRGBSurface(SDL_SWSURFACE,
input->width, input->height, 32,
0x000000ffu, // R mask
0x0000ff00u, // G mask
0x00ff0000u, // B mask
0xff000000u); // A mask
if (surface == NULL) {
fprintf(stderr, "Unable to create %dx%d RGBA surface!\n",
input->width, input->height);
goto Error;
}
if (SDL_MUSTLOCK(surface)) SDL_LockSurface(surface);
#if SDL_BYTEORDER == SDL_BIG_ENDIAN
output->colorspace = MODE_BGRA;
#else
output->colorspace = MODE_RGBA;
#endif
output->width = surface->w;
output->height = surface->h;
output->u.RGBA.rgba = surface->pixels;
output->u.RGBA.stride = surface->pitch;
output->u.RGBA.size = surface->pitch * surface->h;
output->is_external_memory = 1;
status = WebPDecode((const uint8_t*)data, (size_t)data_size, &config);
if (status != VP8_STATUS_OK) {
fprintf(stderr, "Error decoding image (%d)\n", status);
goto Error;
}
if (SDL_MUSTLOCK(surface)) SDL_UnlockSurface(surface);
if (SDL_BlitSurface(surface, NULL, screen, NULL) ||
SDL_Flip(screen)) {
goto Error;
}
ok = 1;
Error:
SDL_FreeSurface(surface);
SDL_FreeSurface(screen);
WebPFreeDecBuffer(output);
return ok;
}
//------------------------------------------------------------------------------
#endif // WEBP_HAVE_SDL

22
external/libwebp/libwebp/extras/webp_to_sdl.h vendored
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@ -1,22 +0,0 @@
// Copyright 2017 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Simple WebP-to-SDL wrapper. Useful for emscripten.
//
// Author: James Zern (jzern@google.com)
#ifndef WEBP_EXTRAS_WEBP_TO_SDL_H_
#define WEBP_EXTRAS_WEBP_TO_SDL_H_
// Exports the method WebPToSDL(const char* data, int data_size) which decodes
// a WebP bitstream into an RGBA SDL surface.
// Return false on failure.
extern int WebPToSDL(const char* data, unsigned int data_size);
#endif // WEBP_EXTRAS_WEBP_TO_SDL_H_

14
external/libwebp/libwebp/gradle.properties vendored
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@ -1,14 +0,0 @@
# Project-wide Gradle settings.
# IDE (e.g. Android Studio) users:
# Gradle settings configured through the IDE *will override*
# any settings specified in this file.
# For more details on how to configure your build environment visit
# http://www.gradle.org/docs/current/userguide/build_environment.html
# Versions for gradle
BUILD_TOOLS_VERSION=23.0.3
COMPILE_SDK_VERSION=23
ANDROID_GRADLE_PLUGIN_VERSION=1.5.0
GRADLE_DOWNLOAD_TASK_VERSION=2.1.0

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external/libwebp/libwebp/gradle/wrapper/gradle-wrapper.jar vendored
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5
external/libwebp/libwebp/gradle/wrapper/gradle-wrapper.properties vendored
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@ -1,5 +0,0 @@
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-6.1.1-bin.zip
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

183
external/libwebp/libwebp/gradlew vendored
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@ -1,183 +0,0 @@
#!/usr/bin/env sh
#
# Copyright 2015 the original author or authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
##############################################################################
##
## Gradle start up script for UN*X
##
##############################################################################
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
PRG="$0"
# Need this for relative symlinks.
while [ -h "$PRG" ] ; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=`dirname "$PRG"`"/$link"
fi
done
SAVED="`pwd`"
cd "`dirname \"$PRG\"`/" >/dev/null
APP_HOME="`pwd -P`"
cd "$SAVED" >/dev/null
APP_NAME="Gradle"
APP_BASE_NAME=`basename "$0"`
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD="maximum"
warn () {
echo "$*"
}
die () {
echo
echo "$*"
echo
exit 1
}
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "`uname`" in
CYGWIN* )
cygwin=true
;;
Darwin* )
darwin=true
;;
MINGW* )
msys=true
;;
NONSTOP* )
nonstop=true
;;
esac
CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD="$JAVA_HOME/jre/sh/java"
else
JAVACMD="$JAVA_HOME/bin/java"
fi
if [ ! -x "$JAVACMD" ] ; then
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD="java"
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
# Increase the maximum file descriptors if we can.
if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
MAX_FD_LIMIT=`ulimit -H -n`
if [ $? -eq 0 ] ; then
if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
MAX_FD="$MAX_FD_LIMIT"
fi
ulimit -n $MAX_FD
if [ $? -ne 0 ] ; then
warn "Could not set maximum file descriptor limit: $MAX_FD"
fi
else
warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
fi
fi
# For Darwin, add options to specify how the application appears in the dock
if $darwin; then
GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
fi
# For Cygwin or MSYS, switch paths to Windows format before running java
if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
APP_HOME=`cygpath --path --mixed "$APP_HOME"`
CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
JAVACMD=`cygpath --unix "$JAVACMD"`
# We build the pattern for arguments to be converted via cygpath
ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
SEP=""
for dir in $ROOTDIRSRAW ; do
ROOTDIRS="$ROOTDIRS$SEP$dir"
SEP="|"
done
OURCYGPATTERN="(^($ROOTDIRS))"
# Add a user-defined pattern to the cygpath arguments
if [ "$GRADLE_CYGPATTERN" != "" ] ; then
OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
fi
# Now convert the arguments - kludge to limit ourselves to /bin/sh
i=0
for arg in "$@" ; do
CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
else
eval `echo args$i`="\"$arg\""
fi
i=`expr $i + 1`
done
case $i in
0) set -- ;;
1) set -- "$args0" ;;
2) set -- "$args0" "$args1" ;;
3) set -- "$args0" "$args1" "$args2" ;;
4) set -- "$args0" "$args1" "$args2" "$args3" ;;
5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
esac
fi
# Escape application args
save () {
for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
echo " "
}
APP_ARGS=`save "$@"`
# Collect all arguments for the java command, following the shell quoting and substitution rules
eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
exec "$JAVACMD" "$@"

100
external/libwebp/libwebp/gradlew.bat vendored
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@ -1,100 +0,0 @@
@rem
@rem Copyright 2015 the original author or authors.
@rem
@rem Licensed under the Apache License, Version 2.0 (the "License");
@rem you may not use this file except in compliance with the License.
@rem You may obtain a copy of the License at
@rem
@rem https://www.apache.org/licenses/LICENSE-2.0
@rem
@rem Unless required by applicable law or agreed to in writing, software
@rem distributed under the License is distributed on an "AS IS" BASIS,
@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@rem See the License for the specific language governing permissions and
@rem limitations under the License.
@rem
@if "%DEBUG%" == "" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%" == "" set DIRNAME=.
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if "%ERRORLEVEL%" == "0" goto init
echo.
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto init
echo.
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:init
@rem Get command-line arguments, handling Windows variants
if not "%OS%" == "Windows_NT" goto win9xME_args
:win9xME_args
@rem Slurp the command line arguments.
set CMD_LINE_ARGS=
set _SKIP=2
:win9xME_args_slurp
if "x%~1" == "x" goto execute
set CMD_LINE_ARGS=%*
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
:end
@rem End local scope for the variables with windows NT shell
if "%ERRORLEVEL%"=="0" goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
exit /b 1
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega

57
external/libwebp/libwebp/imageio/Android.mk vendored
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@ -1,57 +0,0 @@
# Ignore this file during non-NDK builds.
ifdef NDK_ROOT
LOCAL_PATH := $(call my-dir)
################################################################################
# libimageio_util
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
imageio_util.c \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../src
LOCAL_MODULE := imageio_util
include $(BUILD_STATIC_LIBRARY)
################################################################################
# libimagedec
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
image_dec.c \
jpegdec.c \
metadata.c \
pngdec.c \
pnmdec.c \
tiffdec.c \
webpdec.c \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../src
LOCAL_STATIC_LIBRARIES := imageio_util
LOCAL_MODULE := imagedec
include $(BUILD_STATIC_LIBRARY)
################################################################################
# libimageenc
include $(CLEAR_VARS)
LOCAL_SRC_FILES := \
image_enc.c \
LOCAL_CFLAGS := $(WEBP_CFLAGS)
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../src
LOCAL_STATIC_LIBRARIES := imageio_util
LOCAL_MODULE := imageenc
include $(BUILD_STATIC_LIBRARY)
endif # NDK_ROOT

32
external/libwebp/libwebp/imageio/Makefile.am vendored
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@ -1,32 +0,0 @@
AM_CPPFLAGS += -I$(top_builddir)/src -I$(top_srcdir)/src
noinst_LTLIBRARIES =
noinst_LTLIBRARIES += libimageio_util.la
if BUILD_DEMUX
noinst_LTLIBRARIES += libimagedec.la
endif
noinst_LTLIBRARIES += libimageenc.la
noinst_HEADERS =
noinst_HEADERS += ../src/webp/decode.h
noinst_HEADERS += ../src/webp/types.h
libimageio_util_la_SOURCES =
libimageio_util_la_SOURCES += imageio_util.c imageio_util.h
libimagedec_la_SOURCES =
libimagedec_la_SOURCES += image_dec.c image_dec.h
libimagedec_la_SOURCES += jpegdec.c jpegdec.h
libimagedec_la_SOURCES += metadata.c metadata.h
libimagedec_la_SOURCES += pngdec.c pngdec.h
libimagedec_la_SOURCES += pnmdec.c pnmdec.h
libimagedec_la_SOURCES += tiffdec.c tiffdec.h
libimagedec_la_SOURCES += webpdec.c webpdec.h
libimagedec_la_SOURCES += wicdec.c wicdec.h
libimagedec_la_CPPFLAGS = $(JPEG_INCLUDES) $(PNG_INCLUDES) $(TIFF_INCLUDES)
libimagedec_la_CPPFLAGS += $(AM_CPPFLAGS)
libimagedec_la_LIBADD = ../src/demux/libwebpdemux.la
libimageenc_la_SOURCES =
libimageenc_la_SOURCES += image_enc.c image_enc.h
libimageenc_la_CPPFLAGS = $(JPEG_INCLUDES) $(PNG_INCLUDES) $(TIFF_INCLUDES)
libimageenc_la_CPPFLAGS += $(AM_CPPFLAGS)

84
external/libwebp/libwebp/imageio/image_dec.c vendored
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@ -1,84 +0,0 @@
// Copyright 2016 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Generic image-type guessing.
#include "./image_dec.h"
const char* WebPGetEnabledInputFileFormats(void) {
return "WebP"
#ifdef WEBP_HAVE_JPEG
", JPEG"
#endif
#ifdef WEBP_HAVE_PNG
", PNG"
#endif
", PNM (PGM, PPM, PAM)"
#ifdef WEBP_HAVE_TIFF
", TIFF"
#endif
#ifdef HAVE_WINCODEC_H
", Windows Imaging Component (WIC)"
#endif
"";
}
static WEBP_INLINE uint32_t GetBE32(const uint8_t buf[]) {
return ((uint32_t)buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3];
}
WebPInputFileFormat WebPGuessImageType(const uint8_t* const data,
size_t data_size) {
WebPInputFileFormat format = WEBP_UNSUPPORTED_FORMAT;
if (data != NULL && data_size >= 12) {
const uint32_t magic1 = GetBE32(data + 0);
const uint32_t magic2 = GetBE32(data + 8);
if (magic1 == 0x89504E47U) {
format = WEBP_PNG_FORMAT;
} else if (magic1 >= 0xFFD8FF00U && magic1 <= 0xFFD8FFFFU) {
format = WEBP_JPEG_FORMAT;
} else if (magic1 == 0x49492A00 || magic1 == 0x4D4D002A) {
format = WEBP_TIFF_FORMAT;
} else if (magic1 == 0x52494646 && magic2 == 0x57454250) {
format = WEBP_WEBP_FORMAT;
} else if (((magic1 >> 24) & 0xff) == 'P') {
const int type = (magic1 >> 16) & 0xff;
// we only support 'P5 -> P7' for now.
if (type >= '5' && type <= '7') format = WEBP_PNM_FORMAT;
}
}
return format;
}
static int FailReader(const uint8_t* const data, size_t data_size,
struct WebPPicture* const pic,
int keep_alpha, struct Metadata* const metadata) {
(void)data;
(void)data_size;
(void)pic;
(void)keep_alpha;
(void)metadata;
return 0;
}
WebPImageReader WebPGetImageReader(WebPInputFileFormat format) {
switch (format) {
case WEBP_PNG_FORMAT: return ReadPNG;
case WEBP_JPEG_FORMAT: return ReadJPEG;
case WEBP_TIFF_FORMAT: return ReadTIFF;
case WEBP_WEBP_FORMAT: return ReadWebP;
case WEBP_PNM_FORMAT: return ReadPNM;
default: return FailReader;
}
}
WebPImageReader WebPGuessImageReader(const uint8_t* const data,
size_t data_size) {
return WebPGetImageReader(WebPGuessImageType(data, data_size));
}

70
external/libwebp/libwebp/imageio/image_dec.h vendored
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@ -1,70 +0,0 @@
// Copyright 2016 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// All-in-one library to decode PNG/JPEG/WebP/TIFF/WIC input images.
//
// Author: Skal (pascal.massimino@gmail.com)
#ifndef WEBP_IMAGEIO_IMAGE_DEC_H_
#define WEBP_IMAGEIO_IMAGE_DEC_H_
#include "webp/types.h"
#ifdef HAVE_CONFIG_H
#include "webp/config.h"
#endif
#include "./metadata.h"
#include "./jpegdec.h"
#include "./pngdec.h"
#include "./pnmdec.h"
#include "./tiffdec.h"
#include "./webpdec.h"
#include "./wicdec.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef enum {
WEBP_PNG_FORMAT = 0,
WEBP_JPEG_FORMAT,
WEBP_TIFF_FORMAT,
WEBP_WEBP_FORMAT,
WEBP_PNM_FORMAT,
WEBP_UNSUPPORTED_FORMAT
} WebPInputFileFormat;
// Returns a comma separated list of enabled input formats.
const char* WebPGetEnabledInputFileFormats(void);
// Try to infer the image format. 'data_size' should be larger than 12.
// Returns WEBP_UNSUPPORTED_FORMAT if format can't be guess safely.
WebPInputFileFormat WebPGuessImageType(const uint8_t* const data,
size_t data_size);
// Signature for common image-reading functions (ReadPNG, ReadJPEG, ...)
typedef int (*WebPImageReader)(const uint8_t* const data, size_t data_size,
struct WebPPicture* const pic,
int keep_alpha, struct Metadata* const metadata);
// Return the reader associated to a given file format.
WebPImageReader WebPGetImageReader(WebPInputFileFormat format);
// This function is similar to WebPGuessImageType(), but returns a
// suitable reader function. The returned reader is never NULL, but
// unknown formats will return an always-failing valid reader.
WebPImageReader WebPGuessImageReader(const uint8_t* const data,
size_t data_size);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_IMAGEIO_IMAGE_DEC_H_

615
external/libwebp/libwebp/imageio/image_enc.c vendored
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@ -1,615 +0,0 @@
// Copyright 2016 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Save image
#include "./image_enc.h"
#include <assert.h>
#include <string.h>
#ifdef WEBP_HAVE_PNG
#include <png.h>
#include <setjmp.h> // note: this must be included *after* png.h
#endif
#ifdef HAVE_WINCODEC_H
#ifdef __MINGW32__
#define INITGUID // Without this GUIDs are declared extern and fail to link
#endif
#define CINTERFACE
#define COBJMACROS
#define _WIN32_IE 0x500 // Workaround bug in shlwapi.h when compiling C++
// code with COBJMACROS.
#include <ole2.h> // CreateStreamOnHGlobal()
#include <shlwapi.h>
#include <tchar.h>
#include <windows.h>
#include <wincodec.h>
#endif
#include "./imageio_util.h"
#include "../examples/unicode.h"
//------------------------------------------------------------------------------
// PNG
#ifdef HAVE_WINCODEC_H
#define IFS(fn) \
do { \
if (SUCCEEDED(hr)) { \
hr = (fn); \
if (FAILED(hr)) fprintf(stderr, #fn " failed %08lx\n", hr); \
} \
} while (0)
#ifdef __cplusplus
#define MAKE_REFGUID(x) (x)
#else
#define MAKE_REFGUID(x) &(x)
#endif
static HRESULT CreateOutputStream(const char* out_file_name,
int write_to_mem, IStream** stream) {
HRESULT hr = S_OK;
if (write_to_mem) {
// Output to a memory buffer. This is freed when 'stream' is released.
IFS(CreateStreamOnHGlobal(NULL, TRUE, stream));
} else {
IFS(SHCreateStreamOnFile((const LPTSTR)out_file_name,
STGM_WRITE | STGM_CREATE, stream));
}
if (FAILED(hr)) {
_ftprintf(stderr, _T("Error opening output file %s (%08lx)\n"),
(const LPTSTR)out_file_name, hr);
}
return hr;
}
static HRESULT WriteUsingWIC(const char* out_file_name, int use_stdout,
REFGUID container_guid,
uint8_t* rgb, int stride,
uint32_t width, uint32_t height, int has_alpha) {
HRESULT hr = S_OK;
IWICImagingFactory* factory = NULL;
IWICBitmapFrameEncode* frame = NULL;
IWICBitmapEncoder* encoder = NULL;
IStream* stream = NULL;
WICPixelFormatGUID pixel_format = has_alpha ? GUID_WICPixelFormat32bppBGRA
: GUID_WICPixelFormat24bppBGR;
if (out_file_name == NULL || rgb == NULL) return E_INVALIDARG;
IFS(CoInitialize(NULL));
IFS(CoCreateInstance(MAKE_REFGUID(CLSID_WICImagingFactory), NULL,
CLSCTX_INPROC_SERVER,
MAKE_REFGUID(IID_IWICImagingFactory),
(LPVOID*)&factory));
if (hr == REGDB_E_CLASSNOTREG) {
fprintf(stderr,
"Couldn't access Windows Imaging Component (are you running "
"Windows XP SP3 or newer?). PNG support not available. "
"Use -ppm or -pgm for available PPM and PGM formats.\n");
}
IFS(CreateOutputStream(out_file_name, use_stdout, &stream));
IFS(IWICImagingFactory_CreateEncoder(factory, container_guid, NULL,
&encoder));
IFS(IWICBitmapEncoder_Initialize(encoder, stream,
WICBitmapEncoderNoCache));
IFS(IWICBitmapEncoder_CreateNewFrame(encoder, &frame, NULL));
IFS(IWICBitmapFrameEncode_Initialize(frame, NULL));
IFS(IWICBitmapFrameEncode_SetSize(frame, width, height));
IFS(IWICBitmapFrameEncode_SetPixelFormat(frame, &pixel_format));
IFS(IWICBitmapFrameEncode_WritePixels(frame, height, stride,
height * stride, rgb));
IFS(IWICBitmapFrameEncode_Commit(frame));
IFS(IWICBitmapEncoder_Commit(encoder));
if (SUCCEEDED(hr) && use_stdout) {
HGLOBAL image;
IFS(GetHGlobalFromStream(stream, &image));
if (SUCCEEDED(hr)) {
HANDLE std_output = GetStdHandle(STD_OUTPUT_HANDLE);
DWORD mode;
const BOOL update_mode = GetConsoleMode(std_output, &mode);
const void* const image_mem = GlobalLock(image);
DWORD bytes_written = 0;
// Clear output processing if necessary, then output the image.
if (update_mode) SetConsoleMode(std_output, 0);
if (!WriteFile(std_output, image_mem, (DWORD)GlobalSize(image),
&bytes_written, NULL) ||
bytes_written != GlobalSize(image)) {
hr = E_FAIL;
}
if (update_mode) SetConsoleMode(std_output, mode);
GlobalUnlock(image);
}
}
if (frame != NULL) IUnknown_Release(frame);
if (encoder != NULL) IUnknown_Release(encoder);
if (factory != NULL) IUnknown_Release(factory);
if (stream != NULL) IUnknown_Release(stream);
return hr;
}
int WebPWritePNG(const char* out_file_name, int use_stdout,
const WebPDecBuffer* const buffer) {
const uint32_t width = buffer->width;
const uint32_t height = buffer->height;
uint8_t* const rgb = buffer->u.RGBA.rgba;
const int stride = buffer->u.RGBA.stride;
const int has_alpha = WebPIsAlphaMode(buffer->colorspace);
return SUCCEEDED(WriteUsingWIC(out_file_name, use_stdout,
MAKE_REFGUID(GUID_ContainerFormatPng),
rgb, stride, width, height, has_alpha));
}
#elif defined(WEBP_HAVE_PNG) // !HAVE_WINCODEC_H
static void PNGAPI PNGErrorFunction(png_structp png, png_const_charp unused) {
(void)unused; // remove variable-unused warning
longjmp(png_jmpbuf(png), 1);
}
int WebPWritePNG(FILE* out_file, const WebPDecBuffer* const buffer) {
volatile png_structp png;
volatile png_infop info;
if (out_file == NULL || buffer == NULL) return 0;
png = png_create_write_struct(PNG_LIBPNG_VER_STRING,
NULL, PNGErrorFunction, NULL);
if (png == NULL) {
return 0;
}
info = png_create_info_struct(png);
if (info == NULL) {
png_destroy_write_struct((png_structpp)&png, NULL);
return 0;
}
if (setjmp(png_jmpbuf(png))) {
png_destroy_write_struct((png_structpp)&png, (png_infopp)&info);
return 0;
}
png_init_io(png, out_file);
{
const uint32_t width = buffer->width;
const uint32_t height = buffer->height;
png_bytep row = buffer->u.RGBA.rgba;
const int stride = buffer->u.RGBA.stride;
const int has_alpha = WebPIsAlphaMode(buffer->colorspace);
uint32_t y;
png_set_IHDR(png, info, width, height, 8,
has_alpha ? PNG_COLOR_TYPE_RGBA : PNG_COLOR_TYPE_RGB,
PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT,
PNG_FILTER_TYPE_DEFAULT);
png_write_info(png, info);
for (y = 0; y < height; ++y) {
png_write_rows(png, &row, 1);
row += stride;
}
}
png_write_end(png, info);
png_destroy_write_struct((png_structpp)&png, (png_infopp)&info);
return 1;
}
#else // !HAVE_WINCODEC_H && !WEBP_HAVE_PNG
int WebPWritePNG(FILE* fout, const WebPDecBuffer* const buffer) {
if (fout == NULL || buffer == NULL) return 0;
fprintf(stderr, "PNG support not compiled. Please install the libpng "
"development package before building.\n");
fprintf(stderr, "You can run with -ppm flag to decode in PPM format.\n");
return 0;
}
#endif
//------------------------------------------------------------------------------
// PPM / PAM
static int WritePPMPAM(FILE* fout, const WebPDecBuffer* const buffer,
int alpha) {
if (fout == NULL || buffer == NULL) {
return 0;
} else {
const uint32_t width = buffer->width;
const uint32_t height = buffer->height;
const uint8_t* row = buffer->u.RGBA.rgba;
const int stride = buffer->u.RGBA.stride;
const size_t bytes_per_px = alpha ? 4 : 3;
uint32_t y;
if (row == NULL) return 0;
if (alpha) {
fprintf(fout, "P7\nWIDTH %u\nHEIGHT %u\nDEPTH 4\nMAXVAL 255\n"
"TUPLTYPE RGB_ALPHA\nENDHDR\n", width, height);
} else {
fprintf(fout, "P6\n%u %u\n255\n", width, height);
}
for (y = 0; y < height; ++y) {
if (fwrite(row, width, bytes_per_px, fout) != bytes_per_px) {
return 0;
}
row += stride;
}
}
return 1;
}
int WebPWritePPM(FILE* fout, const WebPDecBuffer* const buffer) {
return WritePPMPAM(fout, buffer, 0);
}
int WebPWritePAM(FILE* fout, const WebPDecBuffer* const buffer) {
return WritePPMPAM(fout, buffer, 1);
}
//------------------------------------------------------------------------------
// Raw PGM
// Save 16b mode (RGBA4444, RGB565, ...) for debugging purpose.
int WebPWrite16bAsPGM(FILE* fout, const WebPDecBuffer* const buffer) {
const uint32_t width = buffer->width;
const uint32_t height = buffer->height;
const uint8_t* rgba = buffer->u.RGBA.rgba;
const int stride = buffer->u.RGBA.stride;
const uint32_t bytes_per_px = 2;
uint32_t y;
if (fout == NULL || buffer == NULL || rgba == NULL) return 0;
fprintf(fout, "P5\n%u %u\n255\n", width * bytes_per_px, height);
for (y = 0; y < height; ++y) {
if (fwrite(rgba, width, bytes_per_px, fout) != bytes_per_px) {
return 0;
}
rgba += stride;
}
return 1;
}
//------------------------------------------------------------------------------
// BMP (see https://en.wikipedia.org/wiki/BMP_file_format#Pixel_storage)
static void PutLE16(uint8_t* const dst, uint32_t value) {
dst[0] = (value >> 0) & 0xff;
dst[1] = (value >> 8) & 0xff;
}
static void PutLE32(uint8_t* const dst, uint32_t value) {
PutLE16(dst + 0, (value >> 0) & 0xffff);
PutLE16(dst + 2, (value >> 16) & 0xffff);
}
#define BMP_HEADER_SIZE 54
#define BMP_HEADER_ALPHA_EXTRA_SIZE 16 // for alpha info
int WebPWriteBMP(FILE* fout, const WebPDecBuffer* const buffer) {
const int has_alpha = WebPIsAlphaMode(buffer->colorspace);
const int header_size =
BMP_HEADER_SIZE + (has_alpha ? BMP_HEADER_ALPHA_EXTRA_SIZE : 0);
const uint32_t width = buffer->width;
const uint32_t height = buffer->height;
const uint8_t* rgba = buffer->u.RGBA.rgba;
const int stride = buffer->u.RGBA.stride;
const uint32_t bytes_per_px = has_alpha ? 4 : 3;
uint32_t y;
const uint32_t line_size = bytes_per_px * width;
const uint32_t bmp_stride = (line_size + 3) & ~3; // pad to 4
const uint32_t image_size = bmp_stride * height;
const uint32_t total_size = image_size + header_size;
uint8_t bmp_header[BMP_HEADER_SIZE + BMP_HEADER_ALPHA_EXTRA_SIZE] = { 0 };
if (fout == NULL || buffer == NULL || rgba == NULL) return 0;
// bitmap file header
PutLE16(bmp_header + 0, 0x4d42); // signature 'BM'
PutLE32(bmp_header + 2, total_size); // size including header
PutLE32(bmp_header + 6, 0); // reserved
PutLE32(bmp_header + 10, header_size); // offset to pixel array
// bitmap info header
PutLE32(bmp_header + 14, header_size - 14); // DIB header size
PutLE32(bmp_header + 18, width); // dimensions
PutLE32(bmp_header + 22, height); // no vertical flip
PutLE16(bmp_header + 26, 1); // number of planes
PutLE16(bmp_header + 28, bytes_per_px * 8); // bits per pixel
PutLE32(bmp_header + 30, has_alpha ? 3 : 0); // BI_BITFIELDS or BI_RGB
PutLE32(bmp_header + 34, image_size);
PutLE32(bmp_header + 38, 2400); // x pixels/meter
PutLE32(bmp_header + 42, 2400); // y pixels/meter
PutLE32(bmp_header + 46, 0); // number of palette colors
PutLE32(bmp_header + 50, 0); // important color count
if (has_alpha) { // BITMAPV3INFOHEADER complement
PutLE32(bmp_header + 54, 0x00ff0000); // red mask
PutLE32(bmp_header + 58, 0x0000ff00); // green mask
PutLE32(bmp_header + 62, 0x000000ff); // blue mask
PutLE32(bmp_header + 66, 0xff000000); // alpha mask
}
// TODO(skal): color profile
// write header
if (fwrite(bmp_header, header_size, 1, fout) != 1) {
return 0;
}
// write pixel array, bottom to top
for (y = 0; y < height; ++y) {
const uint8_t* const src = &rgba[(uint64_t)(height - 1 - y) * stride];
if (fwrite(src, line_size, 1, fout) != 1) {
return 0;
}
// write padding zeroes
if (bmp_stride != line_size) {
const uint8_t zeroes[3] = { 0 };
if (fwrite(zeroes, bmp_stride - line_size, 1, fout) != 1) {
return 0;
}
}
}
return 1;
}
#undef BMP_HEADER_SIZE
#undef BMP_HEADER_ALPHA_EXTRA_SIZE
//------------------------------------------------------------------------------
// TIFF
#define NUM_IFD_ENTRIES 15
#define EXTRA_DATA_SIZE 16
// 10b for signature/header + n * 12b entries + 4b for IFD terminator:
#define EXTRA_DATA_OFFSET (10 + 12 * NUM_IFD_ENTRIES + 4)
#define TIFF_HEADER_SIZE (EXTRA_DATA_OFFSET + EXTRA_DATA_SIZE)
int WebPWriteTIFF(FILE* fout, const WebPDecBuffer* const buffer) {
const int has_alpha = WebPIsAlphaMode(buffer->colorspace);
const uint32_t width = buffer->width;
const uint32_t height = buffer->height;
const uint8_t* rgba = buffer->u.RGBA.rgba;
const int stride = buffer->u.RGBA.stride;
const uint8_t bytes_per_px = has_alpha ? 4 : 3;
const uint8_t assoc_alpha =
WebPIsPremultipliedMode(buffer->colorspace) ? 1 : 2;
// For non-alpha case, we omit tag 0x152 (ExtraSamples).
const uint8_t num_ifd_entries = has_alpha ? NUM_IFD_ENTRIES
: NUM_IFD_ENTRIES - 1;
uint8_t tiff_header[TIFF_HEADER_SIZE] = {
0x49, 0x49, 0x2a, 0x00, // little endian signature
8, 0, 0, 0, // offset to the unique IFD that follows
// IFD (offset = 8). Entries must be written in increasing tag order.
num_ifd_entries, 0, // Number of entries in the IFD (12 bytes each).
0x00, 0x01, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, // 10: Width (TBD)
0x01, 0x01, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, // 22: Height (TBD)
0x02, 0x01, 3, 0, bytes_per_px, 0, 0, 0, // 34: BitsPerSample: 8888
EXTRA_DATA_OFFSET + 0, 0, 0, 0,
0x03, 0x01, 3, 0, 1, 0, 0, 0, 1, 0, 0, 0, // 46: Compression: none
0x06, 0x01, 3, 0, 1, 0, 0, 0, 2, 0, 0, 0, // 58: Photometric: RGB
0x11, 0x01, 4, 0, 1, 0, 0, 0, // 70: Strips offset:
TIFF_HEADER_SIZE, 0, 0, 0, // data follows header
0x12, 0x01, 3, 0, 1, 0, 0, 0, 1, 0, 0, 0, // 82: Orientation: topleft
0x15, 0x01, 3, 0, 1, 0, 0, 0, // 94: SamplesPerPixels
bytes_per_px, 0, 0, 0,
0x16, 0x01, 3, 0, 1, 0, 0, 0, 0, 0, 0, 0, // 106: Rows per strip (TBD)
0x17, 0x01, 4, 0, 1, 0, 0, 0, 0, 0, 0, 0, // 118: StripByteCount (TBD)
0x1a, 0x01, 5, 0, 1, 0, 0, 0, // 130: X-resolution
EXTRA_DATA_OFFSET + 8, 0, 0, 0,
0x1b, 0x01, 5, 0, 1, 0, 0, 0, // 142: Y-resolution
EXTRA_DATA_OFFSET + 8, 0, 0, 0,
0x1c, 0x01, 3, 0, 1, 0, 0, 0, 1, 0, 0, 0, // 154: PlanarConfiguration
0x28, 0x01, 3, 0, 1, 0, 0, 0, 2, 0, 0, 0, // 166: ResolutionUnit (inch)
0x52, 0x01, 3, 0, 1, 0, 0, 0,
assoc_alpha, 0, 0, 0, // 178: ExtraSamples: rgbA/RGBA
0, 0, 0, 0, // 190: IFD terminator
// EXTRA_DATA_OFFSET:
8, 0, 8, 0, 8, 0, 8, 0, // BitsPerSample
72, 0, 0, 0, 1, 0, 0, 0 // 72 pixels/inch, for X/Y-resolution
};
uint32_t y;
if (fout == NULL || buffer == NULL || rgba == NULL) return 0;
// Fill placeholders in IFD:
PutLE32(tiff_header + 10 + 8, width);
PutLE32(tiff_header + 22 + 8, height);
PutLE32(tiff_header + 106 + 8, height);
PutLE32(tiff_header + 118 + 8, width * bytes_per_px * height);
if (!has_alpha) PutLE32(tiff_header + 178, 0); // IFD terminator
// write header
if (fwrite(tiff_header, sizeof(tiff_header), 1, fout) != 1) {
return 0;
}
// write pixel values
for (y = 0; y < height; ++y) {
if (fwrite(rgba, bytes_per_px, width, fout) != width) {
return 0;
}
rgba += stride;
}
return 1;
}
#undef TIFF_HEADER_SIZE
#undef EXTRA_DATA_OFFSET
#undef EXTRA_DATA_SIZE
#undef NUM_IFD_ENTRIES
//------------------------------------------------------------------------------
// Raw Alpha
int WebPWriteAlphaPlane(FILE* fout, const WebPDecBuffer* const buffer) {
if (fout == NULL || buffer == NULL) {
return 0;
} else {
const uint32_t width = buffer->width;
const uint32_t height = buffer->height;
const uint8_t* a = buffer->u.YUVA.a;
const int a_stride = buffer->u.YUVA.a_stride;
uint32_t y;
if (a == NULL) return 0;
fprintf(fout, "P5\n%u %u\n255\n", width, height);
for (y = 0; y < height; ++y) {
if (fwrite(a, width, 1, fout) != 1) return 0;
a += a_stride;
}
return 1;
}
}
//------------------------------------------------------------------------------
// PGM with IMC4 layout
int WebPWritePGM(FILE* fout, const WebPDecBuffer* const buffer) {
if (fout == NULL || buffer == NULL) {
return 0;
} else {
const int width = buffer->width;
const int height = buffer->height;
const WebPYUVABuffer* const yuv = &buffer->u.YUVA;
const uint8_t* src_y = yuv->y;
const uint8_t* src_u = yuv->u;
const uint8_t* src_v = yuv->v;
const uint8_t* src_a = yuv->a;
const int uv_width = (width + 1) / 2;
const int uv_height = (height + 1) / 2;
const int a_height = (src_a != NULL) ? height : 0;
int ok = 1;
int y;
if (src_y == NULL || src_u == NULL || src_v == NULL) return 0;
fprintf(fout, "P5\n%d %d\n255\n",
(width + 1) & ~1, height + uv_height + a_height);
for (y = 0; ok && y < height; ++y) {
ok &= (fwrite(src_y, width, 1, fout) == 1);
if (width & 1) fputc(0, fout); // padding byte
src_y += yuv->y_stride;
}
for (y = 0; ok && y < uv_height; ++y) {
ok &= (fwrite(src_u, uv_width, 1, fout) == 1);
ok &= (fwrite(src_v, uv_width, 1, fout) == 1);
src_u += yuv->u_stride;
src_v += yuv->v_stride;
}
for (y = 0; ok && y < a_height; ++y) {
ok &= (fwrite(src_a, width, 1, fout) == 1);
if (width & 1) fputc(0, fout); // padding byte
src_a += yuv->a_stride;
}
return ok;
}
}
//------------------------------------------------------------------------------
// Raw YUV(A) planes
int WebPWriteYUV(FILE* fout, const WebPDecBuffer* const buffer) {
if (fout == NULL || buffer == NULL) {
return 0;
} else {
const int width = buffer->width;
const int height = buffer->height;
const WebPYUVABuffer* const yuv = &buffer->u.YUVA;
const uint8_t* src_y = yuv->y;
const uint8_t* src_u = yuv->u;
const uint8_t* src_v = yuv->v;
const uint8_t* src_a = yuv->a;
const int uv_width = (width + 1) / 2;
const int uv_height = (height + 1) / 2;
const int a_height = (src_a != NULL) ? height : 0;
int ok = 1;
int y;
if (src_y == NULL || src_u == NULL || src_v == NULL) return 0;
for (y = 0; ok && y < height; ++y) {
ok &= (fwrite(src_y, width, 1, fout) == 1);
src_y += yuv->y_stride;
}
for (y = 0; ok && y < uv_height; ++y) {
ok &= (fwrite(src_u, uv_width, 1, fout) == 1);
src_u += yuv->u_stride;
}
for (y = 0; ok && y < uv_height; ++y) {
ok &= (fwrite(src_v, uv_width, 1, fout) == 1);
src_v += yuv->v_stride;
}
for (y = 0; ok && y < a_height; ++y) {
ok &= (fwrite(src_a, width, 1, fout) == 1);
src_a += yuv->a_stride;
}
return ok;
}
}
//------------------------------------------------------------------------------
// Generic top-level call
int WebPSaveImage(const WebPDecBuffer* const buffer,
WebPOutputFileFormat format,
const char* const out_file_name) {
FILE* fout = NULL;
int needs_open_file = 1;
const int use_stdout =
(out_file_name != NULL) && !WSTRCMP(out_file_name, "-");
int ok = 1;
if (buffer == NULL || out_file_name == NULL) return 0;
#ifdef HAVE_WINCODEC_H
needs_open_file = (format != PNG);
#endif
if (needs_open_file) {
fout = use_stdout ? ImgIoUtilSetBinaryMode(stdout)
: WFOPEN(out_file_name, "wb");
if (fout == NULL) {
WFPRINTF(stderr, "Error opening output file %s\n",
(const W_CHAR*)out_file_name);
return 0;
}
}
if (format == PNG ||
format == RGBA || format == BGRA || format == ARGB ||
format == rgbA || format == bgrA || format == Argb) {
#ifdef HAVE_WINCODEC_H
ok &= WebPWritePNG(out_file_name, use_stdout, buffer);
#else
ok &= WebPWritePNG(fout, buffer);
#endif
} else if (format == PAM) {
ok &= WebPWritePAM(fout, buffer);
} else if (format == PPM || format == RGB || format == BGR) {
ok &= WebPWritePPM(fout, buffer);
} else if (format == RGBA_4444 || format == RGB_565 || format == rgbA_4444) {
ok &= WebPWrite16bAsPGM(fout, buffer);
} else if (format == BMP) {
ok &= WebPWriteBMP(fout, buffer);
} else if (format == TIFF) {
ok &= WebPWriteTIFF(fout, buffer);
} else if (format == RAW_YUV) {
ok &= WebPWriteYUV(fout, buffer);
} else if (format == PGM || format == YUV || format == YUVA) {
ok &= WebPWritePGM(fout, buffer);
} else if (format == ALPHA_PLANE_ONLY) {
ok &= WebPWriteAlphaPlane(fout, buffer);
}
if (fout != NULL && fout != stdout) {
fclose(fout);
}
return ok;
}

96
external/libwebp/libwebp/imageio/image_enc.h vendored
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@ -1,96 +0,0 @@
// Copyright 2016 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// All-in-one library to save PNG/JPEG/WebP/TIFF/WIC images.
//
// Author: Skal (pascal.massimino@gmail.com)
#ifndef WEBP_IMAGEIO_IMAGE_ENC_H_
#define WEBP_IMAGEIO_IMAGE_ENC_H_
#include <stdio.h>
#ifdef HAVE_CONFIG_H
#include "webp/config.h"
#endif
#include "webp/types.h"
#include "webp/decode.h"
#ifdef __cplusplus
extern "C" {
#endif
// Output types
typedef enum {
PNG = 0,
PAM,
PPM,
PGM,
BMP,
TIFF,
RAW_YUV,
ALPHA_PLANE_ONLY, // this is for experimenting only
// forced colorspace output (for testing, mostly)
RGB, RGBA, BGR, BGRA, ARGB,
RGBA_4444, RGB_565,
rgbA, bgrA, Argb, rgbA_4444,
YUV, YUVA
} WebPOutputFileFormat;
// General all-purpose call.
// Most formats expect a 'buffer' containing RGBA-like samples, except
// RAW_YUV, YUV and YUVA formats.
// If 'out_file_name' is "-", data is saved to stdout.
// Returns false if an error occurred, true otherwise.
int WebPSaveImage(const WebPDecBuffer* const buffer,
WebPOutputFileFormat format, const char* const out_file_name);
// Save to PNG.
#ifdef HAVE_WINCODEC_H
int WebPWritePNG(const char* out_file_name, int use_stdout,
const struct WebPDecBuffer* const buffer);
#else
int WebPWritePNG(FILE* out_file, const WebPDecBuffer* const buffer);
#endif
// Save to PPM format (RGB, no alpha)
int WebPWritePPM(FILE* fout, const struct WebPDecBuffer* const buffer);
// Save to PAM format (= PPM + alpha)
int WebPWritePAM(FILE* fout, const struct WebPDecBuffer* const buffer);
// Save 16b mode (RGBA4444, RGB565, ...) for debugging purposes.
int WebPWrite16bAsPGM(FILE* fout, const struct WebPDecBuffer* const buffer);
// Save as BMP
int WebPWriteBMP(FILE* fout, const struct WebPDecBuffer* const buffer);
// Save as TIFF
int WebPWriteTIFF(FILE* fout, const struct WebPDecBuffer* const buffer);
// Save the ALPHA plane (only) as a PGM
int WebPWriteAlphaPlane(FILE* fout, const struct WebPDecBuffer* const buffer);
// Save as YUV samples as PGM format (using IMC4 layout).
// See: https://www.fourcc.org/yuv.php#IMC4.
// (very convenient format for viewing the samples, esp. for odd dimensions).
int WebPWritePGM(FILE* fout, const struct WebPDecBuffer* const buffer);
// Save YUV(A) planes sequentially (raw dump)
int WebPWriteYUV(FILE* fout, const struct WebPDecBuffer* const buffer);
// Save 16b mode (RGBA4444, RGB565, ...) as PGM format, for debugging purposes.
int WebPWrite16bAsPGM(FILE* fout, const struct WebPDecBuffer* const buffer);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_IMAGEIO_IMAGE_ENC_H_

162
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@ -1,162 +0,0 @@
// Copyright 2016 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Utility functions used by the image decoders.
//
#include "./imageio_util.h"
#if defined(_WIN32)
#include <fcntl.h> // for _O_BINARY
#include <io.h> // for _setmode()
#endif
#include <stdlib.h>
#include <string.h>
#include "../examples/unicode.h"
// -----------------------------------------------------------------------------
// File I/O
FILE* ImgIoUtilSetBinaryMode(FILE* file) {
#if defined(_WIN32)
if (_setmode(_fileno(file), _O_BINARY) == -1) {
fprintf(stderr, "Failed to reopen file in O_BINARY mode.\n");
return NULL;
}
#endif
return file;
}
int ImgIoUtilReadFromStdin(const uint8_t** data, size_t* data_size) {
static const size_t kBlockSize = 16384; // default initial size
size_t max_size = 0;
size_t size = 0;
uint8_t* input = NULL;
if (data == NULL || data_size == NULL) return 0;
*data = NULL;
*data_size = 0;
if (!ImgIoUtilSetBinaryMode(stdin)) return 0;
while (!feof(stdin)) {
// We double the buffer size each time and read as much as possible.
const size_t extra_size = (max_size == 0) ? kBlockSize : max_size;
// we allocate one extra byte for the \0 terminator
void* const new_data = realloc(input, max_size + extra_size + 1);
if (new_data == NULL) goto Error;
input = (uint8_t*)new_data;
max_size += extra_size;
size += fread(input + size, 1, extra_size, stdin);
if (size < max_size) break;
}
if (ferror(stdin)) goto Error;
if (input != NULL) input[size] = '\0'; // convenient 0-terminator
*data = input;
*data_size = size;
return 1;
Error:
free(input);
fprintf(stderr, "Could not read from stdin\n");
return 0;
}
int ImgIoUtilReadFile(const char* const file_name,
const uint8_t** data, size_t* data_size) {
int ok;
uint8_t* file_data;
size_t file_size;
FILE* in;
const int from_stdin = (file_name == NULL) || !WSTRCMP(file_name, "-");
if (from_stdin) return ImgIoUtilReadFromStdin(data, data_size);
if (data == NULL || data_size == NULL) return 0;
*data = NULL;
*data_size = 0;
in = WFOPEN(file_name, "rb");
if (in == NULL) {
WFPRINTF(stderr, "cannot open input file '%s'\n", (const W_CHAR*)file_name);
return 0;
}
fseek(in, 0, SEEK_END);
file_size = ftell(in);
fseek(in, 0, SEEK_SET);
// we allocate one extra byte for the \0 terminator
file_data = (uint8_t*)WebPMalloc(file_size + 1);
if (file_data == NULL) {
fclose(in);
WFPRINTF(stderr, "memory allocation failure when reading file %s\n",
(const W_CHAR*)file_name);
return 0;
}
ok = (fread(file_data, file_size, 1, in) == 1);
fclose(in);
if (!ok) {
WFPRINTF(stderr, "Could not read %d bytes of data from file %s\n",
(int)file_size, (const W_CHAR*)file_name);
WebPFree(file_data);
return 0;
}
file_data[file_size] = '\0'; // convenient 0-terminator
*data = file_data;
*data_size = file_size;
return 1;
}
// -----------------------------------------------------------------------------
int ImgIoUtilWriteFile(const char* const file_name,
const uint8_t* data, size_t data_size) {
int ok;
FILE* out;
const int to_stdout = (file_name == NULL) || !WSTRCMP(file_name, "-");
if (data == NULL) {
return 0;
}
out = to_stdout ? ImgIoUtilSetBinaryMode(stdout) : WFOPEN(file_name, "wb");
if (out == NULL) {
WFPRINTF(stderr, "Error! Cannot open output file '%s'\n",
(const W_CHAR*)file_name);
return 0;
}
ok = (fwrite(data, data_size, 1, out) == 1);
if (out != stdout) fclose(out);
return ok;
}
// -----------------------------------------------------------------------------
void ImgIoUtilCopyPlane(const uint8_t* src, int src_stride,
uint8_t* dst, int dst_stride, int width, int height) {
while (height-- > 0) {
memcpy(dst, src, width * sizeof(*dst));
src += src_stride;
dst += dst_stride;
}
}
// -----------------------------------------------------------------------------
int ImgIoUtilCheckSizeArgumentsOverflow(uint64_t stride, size_t height) {
const uint64_t total_size = stride * height;
int ok = (total_size == (size_t)total_size);
// check that 'stride' is representable as int:
ok = ok && ((uint64_t)(int)stride == stride);
#if defined(WEBP_MAX_IMAGE_SIZE)
ok = ok && (total_size <= (uint64_t)WEBP_MAX_IMAGE_SIZE);
#endif
return ok;
}
// -----------------------------------------------------------------------------

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// Copyright 2016 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Utility functions used by the image decoders.
//
#ifndef WEBP_IMAGEIO_IMAGEIO_UTIL_H_
#define WEBP_IMAGEIO_IMAGEIO_UTIL_H_
#include <stdio.h>
#include "webp/types.h"
#ifdef __cplusplus
extern "C" {
#endif
//------------------------------------------------------------------------------
// File I/O
// Reopen file in binary (O_BINARY) mode.
// Returns 'file' on success, NULL otherwise.
FILE* ImgIoUtilSetBinaryMode(FILE* file);
// Allocates storage for entire file 'file_name' and returns contents and size
// in 'data' and 'data_size'. Returns 1 on success, 0 otherwise. '*data' should
// be deleted using WebPFree().
// Note: for convenience, the data will be null-terminated with an extra byte
// (not accounted for in *data_size), in case the file is text and intended
// to be used as a C-string.
// If 'file_name' is NULL or equal to "-", input is read from stdin by calling
// the function ImgIoUtilReadFromStdin().
int ImgIoUtilReadFile(const char* const file_name,
const uint8_t** data, size_t* data_size);
// Same as ImgIoUtilReadFile(), but reads until EOF from stdin instead.
int ImgIoUtilReadFromStdin(const uint8_t** data, size_t* data_size);
// Write a data segment into a file named 'file_name'. Returns true if ok.
// If 'file_name' is NULL or equal to "-", output is written to stdout.
int ImgIoUtilWriteFile(const char* const file_name,
const uint8_t* data, size_t data_size);
//------------------------------------------------------------------------------
// Copy width x height pixels from 'src' to 'dst' honoring the strides.
void ImgIoUtilCopyPlane(const uint8_t* src, int src_stride,
uint8_t* dst, int dst_stride, int width, int height);
//------------------------------------------------------------------------------
// Returns 0 in case of overflow, memory over-allocation or excessive dimension.
int ImgIoUtilCheckSizeArgumentsOverflow(uint64_t stride, size_t height);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_IMAGEIO_IMAGEIO_UTIL_H_

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// Copyright 2012 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// JPEG decode.
#include "./jpegdec.h"
#ifdef HAVE_CONFIG_H
#include "webp/config.h"
#endif
#include <stdio.h>
#ifdef WEBP_HAVE_JPEG
#include <jpeglib.h>
#include <jerror.h>
#include <setjmp.h>
#include <stdlib.h>
#include <string.h>
#include "webp/encode.h"
#include "./imageio_util.h"
#include "./metadata.h"
// -----------------------------------------------------------------------------
// Metadata processing
#ifndef JPEG_APP1
# define JPEG_APP1 (JPEG_APP0 + 1)
#endif
#ifndef JPEG_APP2
# define JPEG_APP2 (JPEG_APP0 + 2)
#endif
typedef struct {
const uint8_t* data;
size_t data_length;
int seq; // this segment's sequence number [1, 255] for use in reassembly.
} ICCPSegment;
static void SaveMetadataMarkers(j_decompress_ptr dinfo) {
const unsigned int max_marker_length = 0xffff;
jpeg_save_markers(dinfo, JPEG_APP1, max_marker_length); // Exif/XMP
jpeg_save_markers(dinfo, JPEG_APP2, max_marker_length); // ICC profile
}
static int CompareICCPSegments(const void* a, const void* b) {
const ICCPSegment* s1 = (const ICCPSegment*)a;
const ICCPSegment* s2 = (const ICCPSegment*)b;
return s1->seq - s2->seq;
}
// Extract ICC profile segments from the marker list in 'dinfo', reassembling
// and storing them in 'iccp'.
// Returns true on success and false for memory errors and corrupt profiles.
static int StoreICCP(j_decompress_ptr dinfo, MetadataPayload* const iccp) {
// ICC.1:2010-12 (4.3.0.0) Annex B.4 Embedding ICC Profiles in JPEG files
static const char kICCPSignature[] = "ICC_PROFILE";
static const size_t kICCPSignatureLength = 12; // signature includes '\0'
static const size_t kICCPSkipLength = 14; // signature + seq & count
int expected_count = 0;
int actual_count = 0;
int seq_max = 0;
size_t total_size = 0;
ICCPSegment iccp_segments[255];
jpeg_saved_marker_ptr marker;
memset(iccp_segments, 0, sizeof(iccp_segments));
for (marker = dinfo->marker_list; marker != NULL; marker = marker->next) {
if (marker->marker == JPEG_APP2 &&
marker->data_length > kICCPSkipLength &&
!memcmp(marker->data, kICCPSignature, kICCPSignatureLength)) {
// ICC_PROFILE\0<seq><count>; 'seq' starts at 1.
const int seq = marker->data[kICCPSignatureLength];
const int count = marker->data[kICCPSignatureLength + 1];
const size_t segment_size = marker->data_length - kICCPSkipLength;
ICCPSegment* segment;
if (segment_size == 0 || count == 0 || seq == 0) {
fprintf(stderr, "[ICCP] size (%d) / count (%d) / sequence number (%d)"
" cannot be 0!\n",
(int)segment_size, seq, count);
return 0;
}
if (expected_count == 0) {
expected_count = count;
} else if (expected_count != count) {
fprintf(stderr, "[ICCP] Inconsistent segment count (%d / %d)!\n",
expected_count, count);
return 0;
}
segment = iccp_segments + seq - 1;
if (segment->data_length != 0) {
fprintf(stderr, "[ICCP] Duplicate segment number (%d)!\n" , seq);
return 0;
}
segment->data = marker->data + kICCPSkipLength;
segment->data_length = segment_size;
segment->seq = seq;
total_size += segment_size;
if (seq > seq_max) seq_max = seq;
++actual_count;
}
}
if (actual_count == 0) return 1;
if (seq_max != actual_count) {
fprintf(stderr, "[ICCP] Discontinuous segments, expected: %d actual: %d!\n",
actual_count, seq_max);
return 0;
}
if (expected_count != actual_count) {
fprintf(stderr, "[ICCP] Segment count: %d does not match expected: %d!\n",
actual_count, expected_count);
return 0;
}
// The segments may appear out of order in the file, sort them based on
// sequence number before assembling the payload.
qsort(iccp_segments, actual_count, sizeof(*iccp_segments),
CompareICCPSegments);
iccp->bytes = (uint8_t*)malloc(total_size);
if (iccp->bytes == NULL) return 0;
iccp->size = total_size;
{
int i;
size_t offset = 0;
for (i = 0; i < seq_max; ++i) {
memcpy(iccp->bytes + offset,
iccp_segments[i].data, iccp_segments[i].data_length);
offset += iccp_segments[i].data_length;
}
}
return 1;
}
// Returns true on success and false for memory errors and corrupt profiles.
// The caller must use MetadataFree() on 'metadata' in all cases.
static int ExtractMetadataFromJPEG(j_decompress_ptr dinfo,
Metadata* const metadata) {
static const struct {
int marker;
const char* signature;
size_t signature_length;
size_t storage_offset;
} kJPEGMetadataMap[] = {
// Exif 2.2 Section 4.7.2 Interoperability Structure of APP1 ...
{ JPEG_APP1, "Exif\0", 6, METADATA_OFFSET(exif) },
// XMP Specification Part 3 Section 3 Embedding XMP Metadata ... #JPEG
// TODO(jzern) Add support for 'ExtendedXMP'
{ JPEG_APP1, "http://ns.adobe.com/xap/1.0/", 29, METADATA_OFFSET(xmp) },
{ 0, NULL, 0, 0 },
};
jpeg_saved_marker_ptr marker;
// Treat ICC profiles separately as they may be segmented and out of order.
if (!StoreICCP(dinfo, &metadata->iccp)) return 0;
for (marker = dinfo->marker_list; marker != NULL; marker = marker->next) {
int i;
for (i = 0; kJPEGMetadataMap[i].marker != 0; ++i) {
if (marker->marker == kJPEGMetadataMap[i].marker &&
marker->data_length > kJPEGMetadataMap[i].signature_length &&
!memcmp(marker->data, kJPEGMetadataMap[i].signature,
kJPEGMetadataMap[i].signature_length)) {
MetadataPayload* const payload =
(MetadataPayload*)((uint8_t*)metadata +
kJPEGMetadataMap[i].storage_offset);
if (payload->bytes == NULL) {
const char* marker_data = (const char*)marker->data +
kJPEGMetadataMap[i].signature_length;
const size_t marker_data_length =
marker->data_length - kJPEGMetadataMap[i].signature_length;
if (!MetadataCopy(marker_data, marker_data_length, payload)) return 0;
} else {
fprintf(stderr, "Ignoring additional '%s' marker\n",
kJPEGMetadataMap[i].signature);
}
}
}
}
return 1;
}
#undef JPEG_APP1
#undef JPEG_APP2
// -----------------------------------------------------------------------------
// JPEG decoding
struct my_error_mgr {
struct jpeg_error_mgr pub;
jmp_buf setjmp_buffer;
};
static void my_error_exit(j_common_ptr dinfo) {
struct my_error_mgr* myerr = (struct my_error_mgr*)dinfo->err;
fprintf(stderr, "libjpeg error: ");
dinfo->err->output_message(dinfo);
longjmp(myerr->setjmp_buffer, 1);
}
typedef struct {
struct jpeg_source_mgr pub;
const uint8_t* data;
size_t data_size;
} JPEGReadContext;
static void ContextInit(j_decompress_ptr cinfo) {
JPEGReadContext* const ctx = (JPEGReadContext*)cinfo->src;
ctx->pub.next_input_byte = ctx->data;
ctx->pub.bytes_in_buffer = ctx->data_size;
}
static boolean ContextFill(j_decompress_ptr cinfo) {
// we shouldn't get here.
ERREXIT(cinfo, JERR_FILE_READ);
return FALSE;
}
static void ContextSkip(j_decompress_ptr cinfo, long jump_size) {
JPEGReadContext* const ctx = (JPEGReadContext*)cinfo->src;
size_t jump = (size_t)jump_size;
if (jump > ctx->pub.bytes_in_buffer) { // Don't overflow the buffer.
jump = ctx->pub.bytes_in_buffer;
}
ctx->pub.bytes_in_buffer -= jump;
ctx->pub.next_input_byte += jump;
}
static void ContextTerm(j_decompress_ptr cinfo) {
(void)cinfo;
}
static void ContextSetup(volatile struct jpeg_decompress_struct* const cinfo,
JPEGReadContext* const ctx) {
cinfo->src = (struct jpeg_source_mgr*)ctx;
ctx->pub.init_source = ContextInit;
ctx->pub.fill_input_buffer = ContextFill;
ctx->pub.skip_input_data = ContextSkip;
ctx->pub.resync_to_restart = jpeg_resync_to_restart;
ctx->pub.term_source = ContextTerm;
ctx->pub.bytes_in_buffer = 0;
ctx->pub.next_input_byte = NULL;
}
int ReadJPEG(const uint8_t* const data, size_t data_size,
WebPPicture* const pic, int keep_alpha,
Metadata* const metadata) {
volatile int ok = 0;
int width, height;
int64_t stride;
volatile struct jpeg_decompress_struct dinfo;
struct my_error_mgr jerr;
uint8_t* volatile rgb = NULL;
JSAMPROW buffer[1];
JPEGReadContext ctx;
if (data == NULL || data_size == 0 || pic == NULL) return 0;
(void)keep_alpha;
memset(&ctx, 0, sizeof(ctx));
ctx.data = data;
ctx.data_size = data_size;
memset((j_decompress_ptr)&dinfo, 0, sizeof(dinfo)); // for setjmp safety
dinfo.err = jpeg_std_error(&jerr.pub);
jerr.pub.error_exit = my_error_exit;
if (setjmp(jerr.setjmp_buffer)) {
Error:
MetadataFree(metadata);
jpeg_destroy_decompress((j_decompress_ptr)&dinfo);
goto End;
}
jpeg_create_decompress((j_decompress_ptr)&dinfo);
ContextSetup(&dinfo, &ctx);
if (metadata != NULL) SaveMetadataMarkers((j_decompress_ptr)&dinfo);
jpeg_read_header((j_decompress_ptr)&dinfo, TRUE);
dinfo.out_color_space = JCS_RGB;
dinfo.do_fancy_upsampling = TRUE;
jpeg_start_decompress((j_decompress_ptr)&dinfo);
if (dinfo.output_components != 3) {
goto Error;
}
width = dinfo.output_width;
height = dinfo.output_height;
stride = (int64_t)dinfo.output_width * dinfo.output_components * sizeof(*rgb);
if (stride != (int)stride ||
!ImgIoUtilCheckSizeArgumentsOverflow(stride, height)) {
goto Error;
}
rgb = (uint8_t*)malloc((size_t)stride * height);
if (rgb == NULL) {
goto Error;
}
buffer[0] = (JSAMPLE*)rgb;
while (dinfo.output_scanline < dinfo.output_height) {
if (jpeg_read_scanlines((j_decompress_ptr)&dinfo, buffer, 1) != 1) {
goto Error;
}
buffer[0] += stride;
}
if (metadata != NULL) {
ok = ExtractMetadataFromJPEG((j_decompress_ptr)&dinfo, metadata);
if (!ok) {
fprintf(stderr, "Error extracting JPEG metadata!\n");
goto Error;
}
}
jpeg_finish_decompress((j_decompress_ptr)&dinfo);
jpeg_destroy_decompress((j_decompress_ptr)&dinfo);
// WebP conversion.
pic->width = width;
pic->height = height;
ok = WebPPictureImportRGB(pic, rgb, (int)stride);
if (!ok) {
pic->width = 0; // WebPPictureImportRGB() barely touches 'pic' on failure.
pic->height = 0; // Just reset dimensions but keep any 'custom_ptr' etc.
MetadataFree(metadata); // In case the caller forgets to free it on error.
}
End:
free(rgb);
return ok;
}
#else // !WEBP_HAVE_JPEG
int ReadJPEG(const uint8_t* const data, size_t data_size,
struct WebPPicture* const pic, int keep_alpha,
struct Metadata* const metadata) {
(void)data;
(void)data_size;
(void)pic;
(void)keep_alpha;
(void)metadata;
fprintf(stderr, "JPEG support not compiled. Please install the libjpeg "
"development package before building.\n");
return 0;
}
#endif // WEBP_HAVE_JPEG
// -----------------------------------------------------------------------------

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@ -1,37 +0,0 @@
// Copyright 2012 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// JPEG decode.
#ifndef WEBP_IMAGEIO_JPEGDEC_H_
#define WEBP_IMAGEIO_JPEGDEC_H_
#include "webp/types.h"
#ifdef __cplusplus
extern "C" {
#endif
struct Metadata;
struct WebPPicture;
// Reads a JPEG from 'data', returning the decoded output in 'pic'.
// The output is RGB or YUV depending on pic->use_argb value.
// Returns true on success.
// 'keep_alpha' has no effect, but is kept for coherence with other signatures
// for image readers.
int ReadJPEG(const uint8_t* const data, size_t data_size,
struct WebPPicture* const pic, int keep_alpha,
struct Metadata* const metadata);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_IMAGEIO_JPEGDEC_H_

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// Copyright 2012 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Metadata types and functions.
//
#include "./metadata.h"
#include <stdlib.h>
#include <string.h>
#include "webp/types.h"
void MetadataInit(Metadata* const metadata) {
if (metadata == NULL) return;
memset(metadata, 0, sizeof(*metadata));
}
void MetadataPayloadDelete(MetadataPayload* const payload) {
if (payload == NULL) return;
free(payload->bytes);
payload->bytes = NULL;
payload->size = 0;
}
void MetadataFree(Metadata* const metadata) {
if (metadata == NULL) return;
MetadataPayloadDelete(&metadata->exif);
MetadataPayloadDelete(&metadata->iccp);
MetadataPayloadDelete(&metadata->xmp);
}
int MetadataCopy(const char* metadata, size_t metadata_len,
MetadataPayload* const payload) {
if (metadata == NULL || metadata_len == 0 || payload == NULL) return 0;
payload->bytes = (uint8_t*)malloc(metadata_len);
if (payload->bytes == NULL) return 0;
payload->size = metadata_len;
memcpy(payload->bytes, metadata, metadata_len);
return 1;
}
// -----------------------------------------------------------------------------

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@ -1,47 +0,0 @@
// Copyright 2012 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Metadata types and functions.
//
#ifndef WEBP_IMAGEIO_METADATA_H_
#define WEBP_IMAGEIO_METADATA_H_
#include "webp/types.h"
#ifdef __cplusplus
extern "C" {
#endif
typedef struct MetadataPayload {
uint8_t* bytes;
size_t size;
} MetadataPayload;
typedef struct Metadata {
MetadataPayload exif;
MetadataPayload iccp;
MetadataPayload xmp;
} Metadata;
#define METADATA_OFFSET(x) offsetof(Metadata, x)
void MetadataInit(Metadata* const metadata);
void MetadataPayloadDelete(MetadataPayload* const payload);
void MetadataFree(Metadata* const metadata);
// Stores 'metadata' to 'payload->bytes', returns false on allocation error.
int MetadataCopy(const char* metadata, size_t metadata_len,
MetadataPayload* const payload);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_IMAGEIO_METADATA_H_

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// Copyright 2012 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// PNG decode.
#include "./pngdec.h"
#ifdef HAVE_CONFIG_H
#include "webp/config.h"
#endif
#include <stdio.h>
#ifdef WEBP_HAVE_PNG
#ifndef PNG_USER_MEM_SUPPORTED
#define PNG_USER_MEM_SUPPORTED // for png_create_read_struct_2
#endif
#include <png.h>
#include <setjmp.h> // note: this must be included *after* png.h
#include <stdlib.h>
#include <string.h>
#include "webp/encode.h"
#include "./imageio_util.h"
#include "./metadata.h"
#define LOCAL_PNG_VERSION ((PNG_LIBPNG_VER_MAJOR << 8) | PNG_LIBPNG_VER_MINOR)
#define LOCAL_PNG_PREREQ(maj, min) \
(LOCAL_PNG_VERSION >= (((maj) << 8) | (min)))
static void PNGAPI error_function(png_structp png, png_const_charp error) {
if (error != NULL) fprintf(stderr, "libpng error: %s\n", error);
longjmp(png_jmpbuf(png), 1);
}
#if LOCAL_PNG_PREREQ(1,4)
typedef png_alloc_size_t LocalPngAllocSize;
#else
typedef png_size_t LocalPngAllocSize;
#endif
static png_voidp MallocFunc(png_structp png_ptr, LocalPngAllocSize size) {
(void)png_ptr;
if (size != (size_t)size) return NULL;
if (!ImgIoUtilCheckSizeArgumentsOverflow(size, 1)) return NULL;
return (png_voidp)malloc((size_t)size);
}
static void FreeFunc(png_structp png_ptr, png_voidp ptr) {
(void)png_ptr;
free(ptr);
}
// Converts the NULL terminated 'hexstring' which contains 2-byte character
// representations of hex values to raw data.
// 'hexstring' may contain values consisting of [A-F][a-f][0-9] in pairs,
// e.g., 7af2..., separated by any number of newlines.
// 'expected_length' is the anticipated processed size.
// On success the raw buffer is returned with its length equivalent to
// 'expected_length'. NULL is returned if the processed length is less than
// 'expected_length' or any character aside from those above is encountered.
// The returned buffer must be freed by the caller.
static uint8_t* HexStringToBytes(const char* hexstring,
size_t expected_length) {
const char* src = hexstring;
size_t actual_length = 0;
uint8_t* const raw_data = (uint8_t*)malloc(expected_length);
uint8_t* dst;
if (raw_data == NULL) return NULL;
for (dst = raw_data; actual_length < expected_length && *src != '\0'; ++src) {
char* end;
char val[3];
if (*src == '\n') continue;
val[0] = *src++;
val[1] = *src;
val[2] = '\0';
*dst++ = (uint8_t)strtol(val, &end, 16);
if (end != val + 2) break;
++actual_length;
}
if (actual_length != expected_length) {
free(raw_data);
return NULL;
}
return raw_data;
}
static int ProcessRawProfile(const char* profile, size_t profile_len,
MetadataPayload* const payload) {
const char* src = profile;
char* end;
int expected_length;
if (profile == NULL || profile_len == 0) return 0;
// ImageMagick formats 'raw profiles' as
// '\n<name>\n<length>(%8lu)\n<hex payload>\n'.
if (*src != '\n') {
fprintf(stderr, "Malformed raw profile, expected '\\n' got '\\x%.2X'\n",
*src);
return 0;
}
++src;
// skip the profile name and extract the length.
while (*src != '\0' && *src++ != '\n') {}
expected_length = (int)strtol(src, &end, 10);
if (*end != '\n') {
fprintf(stderr, "Malformed raw profile, expected '\\n' got '\\x%.2X'\n",
*end);
return 0;
}
++end;
// 'end' now points to the profile payload.
payload->bytes = HexStringToBytes(end, expected_length);
if (payload->bytes == NULL) return 0;
payload->size = expected_length;
return 1;
}
static const struct {
const char* name;
int (*process)(const char* profile, size_t profile_len,
MetadataPayload* const payload);
size_t storage_offset;
} kPNGMetadataMap[] = {
// https://exiftool.org/TagNames/PNG.html#TextualData
// See also: ExifTool on CPAN.
{ "Raw profile type exif", ProcessRawProfile, METADATA_OFFSET(exif) },
{ "Raw profile type xmp", ProcessRawProfile, METADATA_OFFSET(xmp) },
// Exiftool puts exif data in APP1 chunk, too.
{ "Raw profile type APP1", ProcessRawProfile, METADATA_OFFSET(exif) },
// XMP Specification Part 3, Section 3 #PNG
{ "XML:com.adobe.xmp", MetadataCopy, METADATA_OFFSET(xmp) },
{ NULL, NULL, 0 },
};
// Looks for metadata at both the beginning and end of the PNG file, giving
// preference to the head.
// Returns true on success. The caller must use MetadataFree() on 'metadata' in
// all cases.
static int ExtractMetadataFromPNG(png_structp png,
png_infop const head_info,
png_infop const end_info,
Metadata* const metadata) {
int p;
for (p = 0; p < 2; ++p) {
png_infop const info = (p == 0) ? head_info : end_info;
png_textp text = NULL;
const png_uint_32 num = png_get_text(png, info, &text, NULL);
png_uint_32 i;
// Look for EXIF / XMP metadata.
for (i = 0; i < num; ++i, ++text) {
int j;
for (j = 0; kPNGMetadataMap[j].name != NULL; ++j) {
if (!strcmp(text->key, kPNGMetadataMap[j].name)) {
MetadataPayload* const payload =
(MetadataPayload*)((uint8_t*)metadata +
kPNGMetadataMap[j].storage_offset);
png_size_t text_length;
switch (text->compression) {
#ifdef PNG_iTXt_SUPPORTED
case PNG_ITXT_COMPRESSION_NONE:
case PNG_ITXT_COMPRESSION_zTXt:
text_length = text->itxt_length;
break;
#endif
case PNG_TEXT_COMPRESSION_NONE:
case PNG_TEXT_COMPRESSION_zTXt:
default:
text_length = text->text_length;
break;
}
if (payload->bytes != NULL) {
fprintf(stderr, "Ignoring additional '%s'\n", text->key);
} else if (!kPNGMetadataMap[j].process(text->text, text_length,
payload)) {
fprintf(stderr, "Failed to process: '%s'\n", text->key);
return 0;
}
break;
}
}
}
// Look for an ICC profile.
{
png_charp name;
int comp_type;
#if LOCAL_PNG_PREREQ(1,5)
png_bytep profile;
#else
png_charp profile;
#endif
png_uint_32 len;
if (png_get_iCCP(png, info,
&name, &comp_type, &profile, &len) == PNG_INFO_iCCP) {
if (!MetadataCopy((const char*)profile, len, &metadata->iccp)) return 0;
}
}
}
return 1;
}
typedef struct {
const uint8_t* data;
size_t data_size;
png_size_t offset;
} PNGReadContext;
static void ReadFunc(png_structp png_ptr, png_bytep data, png_size_t length) {
PNGReadContext* const ctx = (PNGReadContext*)png_get_io_ptr(png_ptr);
if (ctx->data_size - ctx->offset < length) {
png_error(png_ptr, "ReadFunc: invalid read length (overflow)!");
}
memcpy(data, ctx->data + ctx->offset, length);
ctx->offset += length;
}
int ReadPNG(const uint8_t* const data, size_t data_size,
struct WebPPicture* const pic,
int keep_alpha, struct Metadata* const metadata) {
volatile png_structp png = NULL;
volatile png_infop info = NULL;
volatile png_infop end_info = NULL;
PNGReadContext context = { NULL, 0, 0 };
int color_type, bit_depth, interlaced;
int num_channels;
int num_passes;
int p;
volatile int ok = 0;
png_uint_32 width, height, y;
int64_t stride;
uint8_t* volatile rgb = NULL;
if (data == NULL || data_size == 0 || pic == NULL) return 0;
context.data = data;
context.data_size = data_size;
png = png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL,
NULL, MallocFunc, FreeFunc);
if (png == NULL) goto End;
png_set_error_fn(png, 0, error_function, NULL);
if (setjmp(png_jmpbuf(png))) {
Error:
MetadataFree(metadata);
goto End;
}
#if LOCAL_PNG_PREREQ(1,5) || \
(LOCAL_PNG_PREREQ(1,4) && PNG_LIBPNG_VER_RELEASE >= 1)
// If it looks like the bitstream is going to need more memory than libpng's
// internal limit (default: 8M), try to (reasonably) raise it.
if (data_size > png_get_chunk_malloc_max(png) && data_size < (1u << 24)) {
png_set_chunk_malloc_max(png, data_size);
}
#endif
info = png_create_info_struct(png);
if (info == NULL) goto Error;
end_info = png_create_info_struct(png);
if (end_info == NULL) goto Error;
png_set_read_fn(png, &context, ReadFunc);
png_read_info(png, info);
if (!png_get_IHDR(png, info,
&width, &height, &bit_depth, &color_type, &interlaced,
NULL, NULL)) goto Error;
png_set_strip_16(png);
png_set_packing(png);
if (color_type == PNG_COLOR_TYPE_PALETTE) {
png_set_palette_to_rgb(png);
}
if (color_type == PNG_COLOR_TYPE_GRAY ||
color_type == PNG_COLOR_TYPE_GRAY_ALPHA) {
if (bit_depth < 8) {
png_set_expand_gray_1_2_4_to_8(png);
}
png_set_gray_to_rgb(png);
}
if (png_get_valid(png, info, PNG_INFO_tRNS)) {
png_set_tRNS_to_alpha(png);
}
// Apply gamma correction if needed.
{
double image_gamma = 1 / 2.2, screen_gamma = 2.2;
int srgb_intent;
if (png_get_sRGB(png, info, &srgb_intent) ||
png_get_gAMA(png, info, &image_gamma)) {
png_set_gamma(png, screen_gamma, image_gamma);
}
}
if (!keep_alpha) {
png_set_strip_alpha(png);
}
num_passes = png_set_interlace_handling(png);
png_read_update_info(png, info);
num_channels = png_get_channels(png, info);
if (num_channels != 3 && num_channels != 4) {
goto Error;
}
stride = (int64_t)num_channels * width * sizeof(*rgb);
if (stride != (int)stride ||
!ImgIoUtilCheckSizeArgumentsOverflow(stride, height)) {
goto Error;
}
rgb = (uint8_t*)malloc((size_t)stride * height);
if (rgb == NULL) goto Error;
for (p = 0; p < num_passes; ++p) {
png_bytep row = rgb;
for (y = 0; y < height; ++y) {
png_read_rows(png, &row, NULL, 1);
row += stride;
}
}
png_read_end(png, end_info);
if (metadata != NULL &&
!ExtractMetadataFromPNG(png, info, end_info, metadata)) {
fprintf(stderr, "Error extracting PNG metadata!\n");
goto Error;
}
pic->width = (int)width;
pic->height = (int)height;
ok = (num_channels == 4) ? WebPPictureImportRGBA(pic, rgb, (int)stride)
: WebPPictureImportRGB(pic, rgb, (int)stride);
if (!ok) {
goto Error;
}
End:
if (png != NULL) {
png_destroy_read_struct((png_structpp)&png,
(png_infopp)&info, (png_infopp)&end_info);
}
free(rgb);
return ok;
}
#else // !WEBP_HAVE_PNG
int ReadPNG(const uint8_t* const data, size_t data_size,
struct WebPPicture* const pic,
int keep_alpha, struct Metadata* const metadata) {
(void)data;
(void)data_size;
(void)pic;
(void)keep_alpha;
(void)metadata;
fprintf(stderr, "PNG support not compiled. Please install the libpng "
"development package before building.\n");
return 0;
}
#endif // WEBP_HAVE_PNG
// -----------------------------------------------------------------------------

37
external/libwebp/libwebp/imageio/pngdec.h vendored
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@ -1,37 +0,0 @@
// Copyright 2012 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// PNG decode.
#ifndef WEBP_IMAGEIO_PNGDEC_H_
#define WEBP_IMAGEIO_PNGDEC_H_
#include "webp/types.h"
#ifdef __cplusplus
extern "C" {
#endif
struct Metadata;
struct WebPPicture;
// Reads a PNG from 'data', returning the decoded output in 'pic'.
// Output is RGBA or YUVA, depending on pic->use_argb value.
// If 'keep_alpha' is true and the PNG has an alpha channel, the output is RGBA
// or YUVA. Otherwise, alpha channel is dropped and output is RGB or YUV.
// Returns true on success.
int ReadPNG(const uint8_t* const data, size_t data_size,
struct WebPPicture* const pic,
int keep_alpha, struct Metadata* const metadata);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_IMAGEIO_PNGDEC_H_

301
external/libwebp/libwebp/imageio/pnmdec.c vendored
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@ -1,301 +0,0 @@
// Copyright 2017 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// (limited) PNM decoder
#include "./pnmdec.h"
#include <assert.h>
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "webp/encode.h"
#include "./imageio_util.h"
#if defined(_MSC_VER) && _MSC_VER < 1900
#define snprintf _snprintf
#endif
typedef enum {
WIDTH_FLAG = 1 << 0,
HEIGHT_FLAG = 1 << 1,
DEPTH_FLAG = 1 << 2,
MAXVAL_FLAG = 1 << 3,
TUPLE_FLAG = 1 << 4,
ALL_NEEDED_FLAGS = WIDTH_FLAG | HEIGHT_FLAG | DEPTH_FLAG | MAXVAL_FLAG
} PNMFlags;
typedef struct {
const uint8_t* data;
size_t data_size;
int width, height;
int bytes_per_px;
int depth; // 1 (grayscale), 2 (grayscale + alpha), 3 (rgb), 4 (rgba)
int max_value;
int type; // 5, 6 or 7
int seen_flags;
} PNMInfo;
// -----------------------------------------------------------------------------
// PNM decoding
#define MAX_LINE_SIZE 1024
static const size_t kMinPNMHeaderSize = 3;
static size_t ReadLine(const uint8_t* const data, size_t off, size_t data_size,
char out[MAX_LINE_SIZE + 1], size_t* const out_size) {
size_t i = 0;
*out_size = 0;
redo:
for (i = 0; i < MAX_LINE_SIZE && off < data_size; ++i) {
out[i] = data[off++];
if (out[i] == '\n') break;
}
if (off < data_size) {
if (i == 0) goto redo; // empty line
if (out[0] == '#') goto redo; // skip comment
}
out[i] = 0; // safety sentinel
*out_size = i;
return off;
}
static size_t FlagError(const char flag[]) {
fprintf(stderr, "PAM header error: flags '%s' already seen.\n", flag);
return 0;
}
// inspired from http://netpbm.sourceforge.net/doc/pam.html
static size_t ReadPAMFields(PNMInfo* const info, size_t off) {
char out[MAX_LINE_SIZE + 1];
size_t out_size;
int tmp;
int expected_depth = -1;
assert(info != NULL);
while (1) {
off = ReadLine(info->data, off, info->data_size, out, &out_size);
if (off == 0) return 0;
if (sscanf(out, "WIDTH %d", &tmp) == 1) {
if (info->seen_flags & WIDTH_FLAG) return FlagError("WIDTH");
info->seen_flags |= WIDTH_FLAG;
info->width = tmp;
} else if (sscanf(out, "HEIGHT %d", &tmp) == 1) {
if (info->seen_flags & HEIGHT_FLAG) return FlagError("HEIGHT");
info->seen_flags |= HEIGHT_FLAG;
info->height = tmp;
} else if (sscanf(out, "DEPTH %d", &tmp) == 1) {
if (info->seen_flags & DEPTH_FLAG) return FlagError("DEPTH");
info->seen_flags |= DEPTH_FLAG;
info->depth = tmp;
} else if (sscanf(out, "MAXVAL %d", &tmp) == 1) {
if (info->seen_flags & MAXVAL_FLAG) return FlagError("MAXVAL");
info->seen_flags |= MAXVAL_FLAG;
info->max_value = tmp;
} else if (!strcmp(out, "TUPLTYPE RGB_ALPHA")) {
expected_depth = 4;
info->seen_flags |= TUPLE_FLAG;
} else if (!strcmp(out, "TUPLTYPE RGB")) {
expected_depth = 3;
info->seen_flags |= TUPLE_FLAG;
} else if (!strcmp(out, "TUPLTYPE GRAYSCALE_ALPHA")) {
expected_depth = 2;
info->seen_flags |= TUPLE_FLAG;
} else if (!strcmp(out, "TUPLTYPE GRAYSCALE")) {
expected_depth = 1;
info->seen_flags |= TUPLE_FLAG;
} else if (!strcmp(out, "ENDHDR")) {
break;
} else {
static const char kEllipsis[] = " ...";
const size_t kLen = strlen(kEllipsis) + 1; // +1 = trailing \0
int i;
if (out_size > 20) snprintf(out + 20 - kLen, kLen, kEllipsis);
for (i = 0; i < (int)strlen(out); ++i) {
// isprint() might trigger a "char-subscripts" warning if given a char.
if (!isprint((int)out[i])) out[i] = ' ';
}
fprintf(stderr, "PAM header error: unrecognized entry [%s]\n", out);
return 0;
}
}
if (!(info->seen_flags & ALL_NEEDED_FLAGS)) {
fprintf(stderr, "PAM header error: missing tags%s%s%s%s\n",
(info->seen_flags & WIDTH_FLAG) ? "" : " WIDTH",
(info->seen_flags & HEIGHT_FLAG) ? "" : " HEIGHT",
(info->seen_flags & DEPTH_FLAG) ? "" : " DEPTH",
(info->seen_flags & MAXVAL_FLAG) ? "" : " MAXVAL");
return 0;
}
if (expected_depth != -1 && info->depth != expected_depth) {
fprintf(stderr, "PAM header error: expected DEPTH %d but got DEPTH %d\n",
expected_depth, info->depth);
return 0;
}
return off;
}
static size_t ReadHeader(PNMInfo* const info) {
size_t off = 0;
char out[MAX_LINE_SIZE + 1];
size_t out_size;
if (info == NULL) return 0;
if (info->data == NULL || info->data_size < kMinPNMHeaderSize) return 0;
info->width = info->height = 0;
info->type = -1;
info->seen_flags = 0;
info->bytes_per_px = 0;
info->depth = 0;
info->max_value = 0;
off = ReadLine(info->data, off, info->data_size, out, &out_size);
if (off == 0 || sscanf(out, "P%d", &info->type) != 1) return 0;
if (info->type == 7) {
off = ReadPAMFields(info, off);
} else {
off = ReadLine(info->data, off, info->data_size, out, &out_size);
if (off == 0 || sscanf(out, "%d %d", &info->width, &info->height) != 2) {
return 0;
}
off = ReadLine(info->data, off, info->data_size, out, &out_size);
if (off == 0 || sscanf(out, "%d", &info->max_value) != 1) return 0;
// finish initializing missing fields
info->depth = (info->type == 5) ? 1 : 3;
}
// perform some basic numerical validation
if (info->width <= 0 || info->height <= 0 ||
info->type <= 0 || info->type >= 9 ||
info->depth <= 0 || info->depth > 4 ||
info->max_value <= 0 || info->max_value >= 65536) {
return 0;
}
info->bytes_per_px = info->depth * (info->max_value > 255 ? 2 : 1);
return off;
}
int ReadPNM(const uint8_t* const data, size_t data_size,
WebPPicture* const pic, int keep_alpha,
struct Metadata* const metadata) {
int ok = 0;
int i, j;
uint64_t stride, pixel_bytes, sample_size, depth;
uint8_t* rgb = NULL, *tmp_rgb;
size_t offset;
PNMInfo info;
info.data = data;
info.data_size = data_size;
offset = ReadHeader(&info);
if (offset == 0) {
fprintf(stderr, "Error parsing PNM header.\n");
goto End;
}
if (info.type < 5 || info.type > 7) {
fprintf(stderr, "Unsupported P%d PNM format.\n", info.type);
goto End;
}
// Some basic validations.
if (pic == NULL) goto End;
if (info.width > WEBP_MAX_DIMENSION || info.height > WEBP_MAX_DIMENSION) {
fprintf(stderr, "Invalid %dx%d dimension for PNM\n",
info.width, info.height);
goto End;
}
pixel_bytes = (uint64_t)info.width * info.height * info.bytes_per_px;
if (data_size < offset + pixel_bytes) {
fprintf(stderr, "Truncated PNM file (P%d).\n", info.type);
goto End;
}
sample_size = (info.max_value > 255) ? 2 : 1;
// final depth
depth = (info.depth == 1 || info.depth == 3 || !keep_alpha) ? 3 : 4;
stride = depth * info.width;
if (stride != (size_t)stride ||
!ImgIoUtilCheckSizeArgumentsOverflow(stride, info.height)) {
goto End;
}
rgb = (uint8_t*)malloc((size_t)stride * info.height);
if (rgb == NULL) goto End;
// Convert input.
// We only optimize for the sample_size=1, max_value=255, depth=1 case.
tmp_rgb = rgb;
for (j = 0; j < info.height; ++j) {
const uint8_t* in = data + offset;
offset += info.bytes_per_px * info.width;
assert(offset <= data_size);
if (info.max_value == 255 && info.depth >= 3) {
// RGB or RGBA
if (info.depth == 3 || keep_alpha) {
memcpy(tmp_rgb, in, info.depth * info.width * sizeof(*in));
} else {
assert(info.depth == 4 && !keep_alpha);
for (i = 0; i < info.width; ++i) {
tmp_rgb[3 * i + 0] = in[4 * i + 0];
tmp_rgb[3 * i + 1] = in[4 * i + 1];
tmp_rgb[3 * i + 2] = in[4 * i + 2];
}
}
} else {
// Unoptimized case, we need to handle non-trivial operations:
// * convert 16b to 8b (if max_value > 255)
// * rescale to [0..255] range (if max_value != 255)
// * drop the alpha channel (if keep_alpha is false)
const uint32_t round = info.max_value / 2;
int k = 0;
for (i = 0; i < info.width * info.depth; ++i) {
uint32_t v = (sample_size == 2) ? 256u * in[2 * i + 0] + in[2 * i + 1]
: in[i];
if (info.max_value != 255) v = (v * 255u + round) / info.max_value;
if (v > 255u) v = 255u;
if (info.depth > 2) {
if (!keep_alpha && info.depth == 4 && (i % 4) == 3) {
// skip alpha
} else {
tmp_rgb[k] = v;
k += 1;
}
} else if (info.depth == 1 || (i % 2) == 0) {
tmp_rgb[k + 0] = tmp_rgb[k + 1] = tmp_rgb[k + 2] = v;
k += 3;
} else if (keep_alpha && info.depth == 2) {
tmp_rgb[k] = v;
k += 1;
} else {
// skip alpha
}
}
}
tmp_rgb += stride;
}
// WebP conversion.
pic->width = info.width;
pic->height = info.height;
ok = (depth == 4) ? WebPPictureImportRGBA(pic, rgb, (int)stride)
: WebPPictureImportRGB(pic, rgb, (int)stride);
if (!ok) goto End;
ok = 1;
End:
free((void*)rgb);
(void)metadata;
(void)keep_alpha;
return ok;
}
// -----------------------------------------------------------------------------

37
external/libwebp/libwebp/imageio/pnmdec.h vendored
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@ -1,37 +0,0 @@
// Copyright 2017 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// partial PNM format decoder (ppm/pgm)
#ifndef WEBP_IMAGEIO_PNMDEC_H_
#define WEBP_IMAGEIO_PNMDEC_H_
#include "webp/types.h"
#ifdef __cplusplus
extern "C" {
#endif
struct Metadata;
struct WebPPicture;
// Reads a PNM file from 'data', returning the decoded output in 'pic'.
// The output is RGB or YUV depending on pic->use_argb value.
// Returns true on success.
// 'metadata' has no effect, but is kept for coherence with other signatures
// for image readers.
int ReadPNM(const uint8_t* const data, size_t data_size,
struct WebPPicture* const pic, int keep_alpha,
struct Metadata* const metadata);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_IMAGEIO_PNMDEC_H_

293
external/libwebp/libwebp/imageio/tiffdec.c vendored
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@ -1,293 +0,0 @@
// Copyright 2012 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// TIFF decode.
#include "./tiffdec.h"
#ifdef HAVE_CONFIG_H
#include "webp/config.h"
#endif
#include <limits.h>
#include <stdio.h>
#include <string.h>
#ifdef WEBP_HAVE_TIFF
#include <tiffio.h>
#include "webp/encode.h"
#include "./imageio_util.h"
#include "./metadata.h"
static const struct {
ttag_t tag;
size_t storage_offset;
} kTIFFMetadataMap[] = {
{ TIFFTAG_ICCPROFILE, METADATA_OFFSET(iccp) },
{ TIFFTAG_XMLPACKET, METADATA_OFFSET(xmp) },
{ 0, 0 },
};
// Returns true on success. The caller must use MetadataFree() on 'metadata' in
// all cases.
static int ExtractMetadataFromTIFF(TIFF* const tif, Metadata* const metadata) {
int i;
toff_t exif_ifd_offset;
for (i = 0; kTIFFMetadataMap[i].tag != 0; ++i) {
MetadataPayload* const payload =
(MetadataPayload*)((uint8_t*)metadata +
kTIFFMetadataMap[i].storage_offset);
void* tag_data;
uint32_t tag_data_len;
if (TIFFGetField(tif, kTIFFMetadataMap[i].tag, &tag_data_len, &tag_data) &&
!MetadataCopy((const char*)tag_data, tag_data_len, payload)) {
return 0;
}
}
// TODO(jzern): To extract the raw EXIF directory some parsing of it would be
// necessary to determine the overall size. In addition, value offsets in
// individual directory entries may need to be updated as, depending on the
// type, they are file based.
// Exif 2.2 Section 4.6.2 Tag Structure
// TIFF Revision 6.0 Part 1 Section 2 TIFF Structure #Image File Directory
if (TIFFGetField(tif, TIFFTAG_EXIFIFD, &exif_ifd_offset)) {
fprintf(stderr, "Warning: EXIF extraction from TIFF is unsupported.\n");
}
return 1;
}
// Ad-hoc structure to supply read-from-memory functionalities.
typedef struct {
const uint8_t* data;
toff_t size;
toff_t pos;
} MyData;
static int MyClose(thandle_t opaque) {
(void)opaque;
return 0;
}
static toff_t MySize(thandle_t opaque) {
const MyData* const my_data = (MyData*)opaque;
return my_data->size;
}
static toff_t MySeek(thandle_t opaque, toff_t offset, int whence) {
MyData* const my_data = (MyData*)opaque;
offset += (whence == SEEK_CUR) ? my_data->pos
: (whence == SEEK_SET) ? 0
: my_data->size;
if (offset > my_data->size) return (toff_t)-1;
my_data->pos = offset;
return offset;
}
static int MyMapFile(thandle_t opaque, void** base, toff_t* size) {
(void)opaque;
(void)base;
(void)size;
return 0;
}
static void MyUnmapFile(thandle_t opaque, void* base, toff_t size) {
(void)opaque;
(void)base;
(void)size;
}
static tsize_t MyRead(thandle_t opaque, void* dst, tsize_t size) {
MyData* const my_data = (MyData*)opaque;
if (my_data->pos + size > my_data->size) {
size = (tsize_t)(my_data->size - my_data->pos);
}
if (size > 0) {
memcpy(dst, my_data->data + my_data->pos, size);
my_data->pos += size;
}
return size;
}
// Unmultiply Argb data. Taken from dsp/alpha_processing
// (we don't want to force a dependency to a libdspdec library).
#define MFIX 24 // 24bit fixed-point arithmetic
#define HALF ((1u << MFIX) >> 1)
static uint32_t Unmult(uint8_t x, uint32_t mult) {
const uint32_t v = (x * mult + HALF) >> MFIX;
return (v > 255u) ? 255u : v;
}
static WEBP_INLINE uint32_t GetScale(uint32_t a) {
return (255u << MFIX) / a;
}
#undef MFIX
#undef HALF
static void MultARGBRow(uint8_t* ptr, int width) {
int x;
for (x = 0; x < width; ++x, ptr += 4) {
const uint32_t alpha = ptr[3];
if (alpha < 255) {
if (alpha == 0) { // alpha == 0
ptr[0] = ptr[1] = ptr[2] = 0;
} else {
const uint32_t scale = GetScale(alpha);
ptr[0] = Unmult(ptr[0], scale);
ptr[1] = Unmult(ptr[1], scale);
ptr[2] = Unmult(ptr[2], scale);
}
}
}
}
int ReadTIFF(const uint8_t* const data, size_t data_size,
WebPPicture* const pic, int keep_alpha,
Metadata* const metadata) {
MyData my_data = { data, (toff_t)data_size, 0 };
TIFF* tif;
uint32_t image_width, image_height, tile_width, tile_height;
uint64_t stride;
uint16_t samples_per_px = 0;
uint16_t extra_samples = 0;
uint16_t* extra_samples_ptr = NULL;
uint32_t* raster;
int64_t alloc_size;
int ok = 0;
tdir_t dircount;
if (data == NULL || data_size == 0 || data_size > INT_MAX || pic == NULL) {
return 0;
}
tif = TIFFClientOpen("Memory", "r", &my_data,
MyRead, MyRead, MySeek, MyClose,
MySize, MyMapFile, MyUnmapFile);
if (tif == NULL) {
fprintf(stderr, "Error! Cannot parse TIFF file\n");
return 0;
}
dircount = TIFFNumberOfDirectories(tif);
if (dircount > 1) {
fprintf(stderr, "Warning: multi-directory TIFF files are not supported.\n"
"Only the first will be used, %d will be ignored.\n",
dircount - 1);
}
if (!TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLESPERPIXEL, &samples_per_px)) {
fprintf(stderr, "Error! Cannot retrieve TIFF samples-per-pixel info.\n");
goto End;
}
if (!(samples_per_px == 1 || samples_per_px == 3 || samples_per_px == 4)) {
goto End; // not supported
}
if (!(TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &image_width) &&
TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &image_height))) {
fprintf(stderr, "Error! Cannot retrieve TIFF image dimensions.\n");
goto End;
}
stride = (uint64_t)image_width * sizeof(*raster);
if (!ImgIoUtilCheckSizeArgumentsOverflow(stride, image_height)) {
fprintf(stderr, "Error! TIFF image dimension (%d x %d) is too large.\n",
image_width, image_height);
goto End;
}
// According to spec, a tile can be bigger than the image. However it should
// be a multiple of 16 and not way too large, so check that it's not more
// than twice the image size, for dimensions above some arbitrary minimum
// 32. We also check that they respect WebP's dimension and memory limit.
// Note that a tile can be 6byte/px in some cases. Here we assume
// 4byte/px with sizeof(*raster), to be conservative.
if (TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tile_width) &&
TIFFGetField(tif, TIFFTAG_TILELENGTH, &tile_height)) {
if ((tile_width > 32 && tile_width / 2 > image_width) ||
(tile_height > 32 && tile_height / 2 > image_height) ||
!ImgIoUtilCheckSizeArgumentsOverflow(
(uint64_t)tile_width * sizeof(*raster), tile_height)) {
fprintf(stderr, "Error! TIFF tile dimension (%d x %d) is too large.\n",
tile_width, tile_height);
goto End;
}
}
if (samples_per_px > 3 && !TIFFGetField(tif, TIFFTAG_EXTRASAMPLES,
&extra_samples, &extra_samples_ptr)) {
fprintf(stderr, "Error! Cannot retrieve TIFF ExtraSamples info.\n");
goto End;
}
// _Tiffmalloc uses a signed type for size.
alloc_size = (int64_t)(stride * image_height);
if (alloc_size < 0 || alloc_size != (tsize_t)alloc_size) goto End;
raster = (uint32_t*)_TIFFmalloc((tsize_t)alloc_size);
if (raster != NULL) {
if (TIFFReadRGBAImageOriented(tif, image_width, image_height, raster,
ORIENTATION_TOPLEFT, 1)) {
pic->width = image_width;
pic->height = image_height;
// TIFF data is ABGR
#ifdef WORDS_BIGENDIAN
TIFFSwabArrayOfLong(raster, image_width * image_height);
#endif
// if we have an alpha channel, we must un-multiply from rgbA to RGBA
if (extra_samples == 1 && extra_samples_ptr != NULL &&
extra_samples_ptr[0] == EXTRASAMPLE_ASSOCALPHA) {
uint32_t y;
uint8_t* tmp = (uint8_t*)raster;
for (y = 0; y < image_height; ++y) {
MultARGBRow(tmp, image_width);
tmp += stride;
}
}
ok = keep_alpha
? WebPPictureImportRGBA(pic, (const uint8_t*)raster, (int)stride)
: WebPPictureImportRGBX(pic, (const uint8_t*)raster, (int)stride);
}
_TIFFfree(raster);
} else {
fprintf(stderr, "Error allocating TIFF RGBA memory!\n");
}
if (ok) {
if (metadata != NULL) {
ok = ExtractMetadataFromTIFF(tif, metadata);
if (!ok) {
fprintf(stderr, "Error extracting TIFF metadata!\n");
MetadataFree(metadata);
WebPPictureFree(pic);
}
}
}
End:
TIFFClose(tif);
return ok;
}
#else // !WEBP_HAVE_TIFF
int ReadTIFF(const uint8_t* const data, size_t data_size,
struct WebPPicture* const pic, int keep_alpha,
struct Metadata* const metadata) {
(void)data;
(void)data_size;
(void)pic;
(void)keep_alpha;
(void)metadata;
fprintf(stderr, "TIFF support not compiled. Please install the libtiff "
"development package before building.\n");
return 0;
}
#endif // WEBP_HAVE_TIFF
// -----------------------------------------------------------------------------

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@ -1,37 +0,0 @@
// Copyright 2012 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// TIFF decode.
#ifndef WEBP_IMAGEIO_TIFFDEC_H_
#define WEBP_IMAGEIO_TIFFDEC_H_
#include "webp/types.h"
#ifdef __cplusplus
extern "C" {
#endif
struct Metadata;
struct WebPPicture;
// Reads a TIFF from 'data', returning the decoded output in 'pic'.
// Output is RGBA or YUVA, depending on pic->use_argb value.
// If 'keep_alpha' is true and the TIFF has an alpha channel, the output is RGBA
// or YUVA. Otherwise, alpha channel is dropped and output is RGB or YUV.
// Returns true on success.
int ReadTIFF(const uint8_t* const data, size_t data_size,
struct WebPPicture* const pic, int keep_alpha,
struct Metadata* const metadata);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_IMAGEIO_TIFFDEC_H_

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@ -1,244 +0,0 @@
// Copyright 2014 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// WebP decode.
#ifdef HAVE_CONFIG_H
#include "webp/config.h"
#endif
#include "./webpdec.h"
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include "webp/decode.h"
#include "webp/demux.h"
#include "webp/encode.h"
#include "../examples/unicode.h"
#include "./imageio_util.h"
#include "./metadata.h"
//------------------------------------------------------------------------------
// WebP decoding
static const char* const kStatusMessages[VP8_STATUS_NOT_ENOUGH_DATA + 1] = {
"OK", "OUT_OF_MEMORY", "INVALID_PARAM", "BITSTREAM_ERROR",
"UNSUPPORTED_FEATURE", "SUSPENDED", "USER_ABORT", "NOT_ENOUGH_DATA"
};
static void PrintAnimationWarning(const WebPDecoderConfig* const config) {
if (config->input.has_animation) {
fprintf(stderr,
"Error! Decoding of an animated WebP file is not supported.\n"
" Use webpmux to extract the individual frames or\n"
" vwebp to view this image.\n");
}
}
void PrintWebPError(const char* const in_file, int status) {
WFPRINTF(stderr, "Decoding of %s failed.\n", (const W_CHAR*)in_file);
fprintf(stderr, "Status: %d", status);
if (status >= VP8_STATUS_OK && status <= VP8_STATUS_NOT_ENOUGH_DATA) {
fprintf(stderr, "(%s)", kStatusMessages[status]);
}
fprintf(stderr, "\n");
}
int LoadWebP(const char* const in_file,
const uint8_t** data, size_t* data_size,
WebPBitstreamFeatures* bitstream) {
VP8StatusCode status;
WebPBitstreamFeatures local_features;
if (!ImgIoUtilReadFile(in_file, data, data_size)) return 0;
if (bitstream == NULL) {
bitstream = &local_features;
}
status = WebPGetFeatures(*data, *data_size, bitstream);
if (status != VP8_STATUS_OK) {
WebPFree((void*)*data);
*data = NULL;
*data_size = 0;
PrintWebPError(in_file, status);
return 0;
}
return 1;
}
//------------------------------------------------------------------------------
VP8StatusCode DecodeWebP(const uint8_t* const data, size_t data_size,
WebPDecoderConfig* const config) {
if (config == NULL) return VP8_STATUS_INVALID_PARAM;
PrintAnimationWarning(config);
return WebPDecode(data, data_size, config);
}
VP8StatusCode DecodeWebPIncremental(
const uint8_t* const data, size_t data_size,
WebPDecoderConfig* const config) {
VP8StatusCode status = VP8_STATUS_OK;
if (config == NULL) return VP8_STATUS_INVALID_PARAM;
PrintAnimationWarning(config);
// Decoding call.
{
WebPIDecoder* const idec = WebPIDecode(data, data_size, config);
if (idec == NULL) {
fprintf(stderr, "Failed during WebPIDecode().\n");
return VP8_STATUS_OUT_OF_MEMORY;
} else {
status = WebPIUpdate(idec, data, data_size);
WebPIDelete(idec);
}
}
return status;
}
// -----------------------------------------------------------------------------
// Metadata
static int ExtractMetadata(const uint8_t* const data, size_t data_size,
Metadata* const metadata) {
WebPData webp_data = { data, data_size };
WebPDemuxer* const demux = WebPDemux(&webp_data);
WebPChunkIterator chunk_iter;
uint32_t flags;
if (demux == NULL) return 0;
assert(metadata != NULL);
flags = WebPDemuxGetI(demux, WEBP_FF_FORMAT_FLAGS);
if ((flags & ICCP_FLAG) && WebPDemuxGetChunk(demux, "ICCP", 1, &chunk_iter)) {
MetadataCopy((const char*)chunk_iter.chunk.bytes, chunk_iter.chunk.size,
&metadata->iccp);
WebPDemuxReleaseChunkIterator(&chunk_iter);
}
if ((flags & EXIF_FLAG) && WebPDemuxGetChunk(demux, "EXIF", 1, &chunk_iter)) {
MetadataCopy((const char*)chunk_iter.chunk.bytes, chunk_iter.chunk.size,
&metadata->exif);
WebPDemuxReleaseChunkIterator(&chunk_iter);
}
if ((flags & XMP_FLAG) && WebPDemuxGetChunk(demux, "XMP ", 1, &chunk_iter)) {
MetadataCopy((const char*)chunk_iter.chunk.bytes, chunk_iter.chunk.size,
&metadata->xmp);
WebPDemuxReleaseChunkIterator(&chunk_iter);
}
WebPDemuxDelete(demux);
return 1;
}
// -----------------------------------------------------------------------------
int ReadWebP(const uint8_t* const data, size_t data_size,
WebPPicture* const pic,
int keep_alpha, Metadata* const metadata) {
int ok = 0;
VP8StatusCode status = VP8_STATUS_OK;
WebPDecoderConfig config;
WebPDecBuffer* const output_buffer = &config.output;
WebPBitstreamFeatures* const bitstream = &config.input;
if (data == NULL || data_size == 0 || pic == NULL) return 0;
if (!WebPInitDecoderConfig(&config)) {
fprintf(stderr, "Library version mismatch!\n");
return 0;
}
status = WebPGetFeatures(data, data_size, bitstream);
if (status != VP8_STATUS_OK) {
PrintWebPError("input data", status);
return 0;
}
do {
const int has_alpha = keep_alpha && bitstream->has_alpha;
uint64_t stride;
pic->width = bitstream->width;
pic->height = bitstream->height;
if (pic->use_argb) {
stride = (uint64_t)bitstream->width * 4;
} else {
stride = (uint64_t)bitstream->width * (has_alpha ? 5 : 3) / 2;
pic->colorspace = has_alpha ? WEBP_YUV420A : WEBP_YUV420;
}
if (!ImgIoUtilCheckSizeArgumentsOverflow(stride, bitstream->height)) {
status = VP8_STATUS_OUT_OF_MEMORY;
break;
}
ok = WebPPictureAlloc(pic);
if (!ok) {
status = VP8_STATUS_OUT_OF_MEMORY;
break;
}
if (pic->use_argb) {
#ifdef WORDS_BIGENDIAN
output_buffer->colorspace = MODE_ARGB;
#else
output_buffer->colorspace = MODE_BGRA;
#endif
output_buffer->u.RGBA.rgba = (uint8_t*)pic->argb;
output_buffer->u.RGBA.stride = pic->argb_stride * sizeof(uint32_t);
output_buffer->u.RGBA.size = output_buffer->u.RGBA.stride * pic->height;
} else {
output_buffer->colorspace = has_alpha ? MODE_YUVA : MODE_YUV;
output_buffer->u.YUVA.y = pic->y;
output_buffer->u.YUVA.u = pic->u;
output_buffer->u.YUVA.v = pic->v;
output_buffer->u.YUVA.a = has_alpha ? pic->a : NULL;
output_buffer->u.YUVA.y_stride = pic->y_stride;
output_buffer->u.YUVA.u_stride = pic->uv_stride;
output_buffer->u.YUVA.v_stride = pic->uv_stride;
output_buffer->u.YUVA.a_stride = has_alpha ? pic->a_stride : 0;
output_buffer->u.YUVA.y_size = pic->height * pic->y_stride;
output_buffer->u.YUVA.u_size = (pic->height + 1) / 2 * pic->uv_stride;
output_buffer->u.YUVA.v_size = (pic->height + 1) / 2 * pic->uv_stride;
output_buffer->u.YUVA.a_size = pic->height * pic->a_stride;
}
output_buffer->is_external_memory = 1;
status = DecodeWebP(data, data_size, &config);
ok = (status == VP8_STATUS_OK);
if (ok && !keep_alpha && pic->use_argb) {
// Need to wipe out the alpha value, as requested.
int x, y;
uint32_t* argb = pic->argb;
for (y = 0; y < pic->height; ++y) {
for (x = 0; x < pic->width; ++x) argb[x] |= 0xff000000u;
argb += pic->argb_stride;
}
}
} while (0); // <- so we can 'break' out of the loop
if (status != VP8_STATUS_OK) {
PrintWebPError("input data", status);
ok = 0;
}
WebPFreeDecBuffer(output_buffer);
if (ok && metadata != NULL) {
ok = ExtractMetadata(data, data_size, metadata);
if (!ok) {
PrintWebPError("metadata", VP8_STATUS_BITSTREAM_ERROR);
}
}
if (!ok) WebPPictureFree(pic);
return ok;
}
// -----------------------------------------------------------------------------

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@ -1,67 +0,0 @@
// Copyright 2014 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// WebP decode.
#ifndef WEBP_IMAGEIO_WEBPDEC_H_
#define WEBP_IMAGEIO_WEBPDEC_H_
#include "webp/decode.h"
#ifdef __cplusplus
extern "C" {
#endif
struct Metadata;
struct WebPPicture;
//------------------------------------------------------------------------------
// WebP decoding
// Prints an informative error message regarding decode failure of 'in_file'.
// 'status' is treated as a VP8StatusCode and if valid will be printed as a
// text string.
void PrintWebPError(const char* const in_file, int status);
// Reads a WebP from 'in_file', returning the contents and size in 'data' and
// 'data_size'. If not NULL, 'bitstream' is populated using WebPGetFeatures().
// Returns true on success.
int LoadWebP(const char* const in_file,
const uint8_t** data, size_t* data_size,
WebPBitstreamFeatures* bitstream);
// Decodes the WebP contained in 'data'.
// 'config' is a structure previously initialized by WebPInitDecoderConfig().
// 'config->output' should have the desired colorspace selected.
// Returns the decoder status. On success 'config->output' will contain the
// decoded picture.
VP8StatusCode DecodeWebP(const uint8_t* const data, size_t data_size,
WebPDecoderConfig* const config);
// Same as DecodeWebP(), but using the incremental decoder.
VP8StatusCode DecodeWebPIncremental(
const uint8_t* const data, size_t data_size,
WebPDecoderConfig* const config);
//------------------------------------------------------------------------------
// Decodes a WebP contained in 'data', returning the decoded output in 'pic'.
// Output is RGBA or YUVA, depending on pic->use_argb value.
// If 'keep_alpha' is true and the WebP has an alpha channel, the output is RGBA
// or YUVA. Otherwise, alpha channel is dropped and output is RGB or YUV.
// Returns true on success.
int ReadWebP(const uint8_t* const data, size_t data_size,
struct WebPPicture* const pic,
int keep_alpha, struct Metadata* const metadata);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_IMAGEIO_WEBPDEC_H_

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@ -1,413 +0,0 @@
// Copyright 2013 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Windows Imaging Component (WIC) decode.
#include "./wicdec.h"
#ifdef HAVE_CONFIG_H
#include "webp/config.h"
#endif
#include <assert.h>
#include <stdio.h>
#include <string.h>
#ifdef HAVE_WINCODEC_H
#ifdef __MINGW32__
#define INITGUID // Without this GUIDs are declared extern and fail to link
#endif
#define CINTERFACE
#define COBJMACROS
#define _WIN32_IE 0x500 // Workaround bug in shlwapi.h when compiling C++
// code with COBJMACROS.
#include <ole2.h> // CreateStreamOnHGlobal()
#include <shlwapi.h>
#include <tchar.h>
#include <windows.h>
#include <wincodec.h>
#include "../examples/unicode.h"
#include "./imageio_util.h"
#include "./metadata.h"
#include "webp/encode.h"
#define IFS(fn) \
do { \
if (SUCCEEDED(hr)) { \
hr = (fn); \
if (FAILED(hr)) fprintf(stderr, #fn " failed %08lx\n", hr); \
} \
} while (0)
// modified version of DEFINE_GUID from guiddef.h.
#define WEBP_DEFINE_GUID(name, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8) \
static const GUID name = \
{ l, w1, w2, { b1, b2, b3, b4, b5, b6, b7, b8 } }
#ifdef __cplusplus
#define MAKE_REFGUID(x) (x)
#else
#define MAKE_REFGUID(x) &(x)
#endif
typedef struct WICFormatImporter {
const GUID* pixel_format;
int bytes_per_pixel;
int (*import)(WebPPicture* const, const uint8_t* const, int);
} WICFormatImporter;
// From Microsoft SDK 7.0a -- wincodec.h
// Create local copies for compatibility when building against earlier
// versions of the SDK.
WEBP_DEFINE_GUID(GUID_WICPixelFormat24bppBGR_,
0x6fddc324, 0x4e03, 0x4bfe,
0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0c);
WEBP_DEFINE_GUID(GUID_WICPixelFormat24bppRGB_,
0x6fddc324, 0x4e03, 0x4bfe,
0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0d);
WEBP_DEFINE_GUID(GUID_WICPixelFormat32bppBGRA_,
0x6fddc324, 0x4e03, 0x4bfe,
0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x0f);
WEBP_DEFINE_GUID(GUID_WICPixelFormat32bppRGBA_,
0xf5c7ad2d, 0x6a8d, 0x43dd,
0xa7, 0xa8, 0xa2, 0x99, 0x35, 0x26, 0x1a, 0xe9);
WEBP_DEFINE_GUID(GUID_WICPixelFormat64bppBGRA_,
0x1562ff7c, 0xd352, 0x46f9,
0x97, 0x9e, 0x42, 0x97, 0x6b, 0x79, 0x22, 0x46);
WEBP_DEFINE_GUID(GUID_WICPixelFormat64bppRGBA_,
0x6fddc324, 0x4e03, 0x4bfe,
0xb1, 0x85, 0x3d, 0x77, 0x76, 0x8d, 0xc9, 0x16);
static HRESULT OpenInputStream(const char* filename, IStream** stream) {
HRESULT hr = S_OK;
if (!WSTRCMP(filename, "-")) {
const uint8_t* data = NULL;
size_t data_size = 0;
const int ok = ImgIoUtilReadFile(filename, &data, &data_size);
if (ok) {
HGLOBAL image = GlobalAlloc(GMEM_MOVEABLE, data_size);
if (image != NULL) {
void* const image_mem = GlobalLock(image);
if (image_mem != NULL) {
memcpy(image_mem, data, data_size);
GlobalUnlock(image);
IFS(CreateStreamOnHGlobal(image, TRUE, stream));
} else {
hr = E_FAIL;
}
} else {
hr = E_OUTOFMEMORY;
}
free((void*)data);
} else {
hr = E_FAIL;
}
} else {
IFS(SHCreateStreamOnFile((const LPTSTR)filename, STGM_READ, stream));
}
if (FAILED(hr)) {
_ftprintf(stderr, _T("Error opening input file %s (%08lx)\n"),
(const LPTSTR)filename, hr);
}
return hr;
}
// -----------------------------------------------------------------------------
// Metadata processing
// Stores the first non-zero sized color profile from 'frame' to 'iccp'.
// Returns an HRESULT to indicate success or failure. The caller is responsible
// for freeing 'iccp->bytes' in either case.
static HRESULT ExtractICCP(IWICImagingFactory* const factory,
IWICBitmapFrameDecode* const frame,
MetadataPayload* const iccp) {
HRESULT hr = S_OK;
UINT i, count;
IWICColorContext** color_contexts;
IFS(IWICBitmapFrameDecode_GetColorContexts(frame, 0, NULL, &count));
if (FAILED(hr) || count == 0) {
// Treat unsupported operation as a non-fatal error. See crbug.com/webp/506.
return (hr == WINCODEC_ERR_UNSUPPORTEDOPERATION) ? S_OK : hr;
}
color_contexts = (IWICColorContext**)calloc(count, sizeof(*color_contexts));
if (color_contexts == NULL) return E_OUTOFMEMORY;
for (i = 0; SUCCEEDED(hr) && i < count; ++i) {
IFS(IWICImagingFactory_CreateColorContext(factory, &color_contexts[i]));
}
if (SUCCEEDED(hr)) {
UINT num_color_contexts;
IFS(IWICBitmapFrameDecode_GetColorContexts(frame,
count, color_contexts,
&num_color_contexts));
assert(FAILED(hr) || num_color_contexts <= count);
for (i = 0; SUCCEEDED(hr) && i < num_color_contexts; ++i) {
WICColorContextType type;
IFS(IWICColorContext_GetType(color_contexts[i], &type));
if (SUCCEEDED(hr) && type == WICColorContextProfile) {
UINT size;
IFS(IWICColorContext_GetProfileBytes(color_contexts[i],
0, NULL, &size));
if (SUCCEEDED(hr) && size > 0) {
iccp->bytes = (uint8_t*)malloc(size);
if (iccp->bytes == NULL) {
hr = E_OUTOFMEMORY;
break;
}
iccp->size = size;
IFS(IWICColorContext_GetProfileBytes(color_contexts[i],
(UINT)iccp->size, iccp->bytes,
&size));
if (SUCCEEDED(hr) && size != iccp->size) {
fprintf(stderr, "Warning! ICC profile size (%u) != expected (%u)\n",
size, (uint32_t)iccp->size);
iccp->size = size;
}
break;
}
}
}
}
for (i = 0; i < count; ++i) {
if (color_contexts[i] != NULL) IUnknown_Release(color_contexts[i]);
}
free(color_contexts);
return hr;
}
static HRESULT ExtractMetadata(IWICImagingFactory* const factory,
IWICBitmapFrameDecode* const frame,
Metadata* const metadata) {
// TODO(jzern): add XMP/EXIF extraction.
const HRESULT hr = ExtractICCP(factory, frame, &metadata->iccp);
if (FAILED(hr)) MetadataFree(metadata);
return hr;
}
// -----------------------------------------------------------------------------
static int HasPalette(GUID pixel_format) {
return (IsEqualGUID(MAKE_REFGUID(pixel_format),
MAKE_REFGUID(GUID_WICPixelFormat1bppIndexed)) ||
IsEqualGUID(MAKE_REFGUID(pixel_format),
MAKE_REFGUID(GUID_WICPixelFormat2bppIndexed)) ||
IsEqualGUID(MAKE_REFGUID(pixel_format),
MAKE_REFGUID(GUID_WICPixelFormat4bppIndexed)) ||
IsEqualGUID(MAKE_REFGUID(pixel_format),
MAKE_REFGUID(GUID_WICPixelFormat8bppIndexed)));
}
static int HasAlpha(IWICImagingFactory* const factory,
IWICBitmapDecoder* const decoder,
IWICBitmapFrameDecode* const frame,
GUID pixel_format) {
int has_alpha;
if (HasPalette(pixel_format)) {
IWICPalette* frame_palette = NULL;
IWICPalette* global_palette = NULL;
BOOL frame_palette_has_alpha = FALSE;
BOOL global_palette_has_alpha = FALSE;
// A palette may exist at the frame or container level,
// check IWICPalette::HasAlpha() for both if present.
if (SUCCEEDED(IWICImagingFactory_CreatePalette(factory, &frame_palette)) &&
SUCCEEDED(IWICBitmapFrameDecode_CopyPalette(frame, frame_palette))) {
IWICPalette_HasAlpha(frame_palette, &frame_palette_has_alpha);
}
if (SUCCEEDED(IWICImagingFactory_CreatePalette(factory, &global_palette)) &&
SUCCEEDED(IWICBitmapDecoder_CopyPalette(decoder, global_palette))) {
IWICPalette_HasAlpha(global_palette, &global_palette_has_alpha);
}
has_alpha = frame_palette_has_alpha || global_palette_has_alpha;
if (frame_palette != NULL) IUnknown_Release(frame_palette);
if (global_palette != NULL) IUnknown_Release(global_palette);
} else {
has_alpha = IsEqualGUID(MAKE_REFGUID(pixel_format),
MAKE_REFGUID(GUID_WICPixelFormat32bppRGBA_)) ||
IsEqualGUID(MAKE_REFGUID(pixel_format),
MAKE_REFGUID(GUID_WICPixelFormat32bppBGRA_)) ||
IsEqualGUID(MAKE_REFGUID(pixel_format),
MAKE_REFGUID(GUID_WICPixelFormat64bppRGBA_)) ||
IsEqualGUID(MAKE_REFGUID(pixel_format),
MAKE_REFGUID(GUID_WICPixelFormat64bppBGRA_));
}
return has_alpha;
}
int ReadPictureWithWIC(const char* const filename,
WebPPicture* const pic, int keep_alpha,
Metadata* const metadata) {
// From Microsoft SDK 6.0a -- ks.h
// Define a local copy to avoid link errors under mingw.
WEBP_DEFINE_GUID(GUID_NULL_, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
static const WICFormatImporter kAlphaFormatImporters[] = {
{ &GUID_WICPixelFormat32bppBGRA_, 4, WebPPictureImportBGRA },
{ &GUID_WICPixelFormat32bppRGBA_, 4, WebPPictureImportRGBA },
{ NULL, 0, NULL },
};
static const WICFormatImporter kNonAlphaFormatImporters[] = {
{ &GUID_WICPixelFormat24bppBGR_, 3, WebPPictureImportBGR },
{ &GUID_WICPixelFormat24bppRGB_, 3, WebPPictureImportRGB },
{ NULL, 0, NULL },
};
HRESULT hr = S_OK;
IWICBitmapFrameDecode* frame = NULL;
IWICFormatConverter* converter = NULL;
IWICImagingFactory* factory = NULL;
IWICBitmapDecoder* decoder = NULL;
IStream* stream = NULL;
UINT frame_count = 0;
UINT width = 0, height = 0;
BYTE* rgb = NULL;
WICPixelFormatGUID src_pixel_format = GUID_WICPixelFormatUndefined;
const WICFormatImporter* importer = NULL;
GUID src_container_format = GUID_NULL_;
// From Windows Kits\10\Include\10.0.19041.0\um\wincodec.h
WEBP_DEFINE_GUID(GUID_ContainerFormatWebp_,
0xe094b0e2, 0x67f2, 0x45b3,
0xb0, 0xea, 0x11, 0x53, 0x37, 0xca, 0x7c, 0xf3);
static const GUID* kAlphaContainers[] = {
&GUID_ContainerFormatBmp,
&GUID_ContainerFormatPng,
&GUID_ContainerFormatTiff,
&GUID_ContainerFormatWebp_,
NULL
};
int has_alpha = 0;
int64_t stride;
if (filename == NULL || pic == NULL) return 0;
IFS(CoInitialize(NULL));
IFS(CoCreateInstance(MAKE_REFGUID(CLSID_WICImagingFactory), NULL,
CLSCTX_INPROC_SERVER,
MAKE_REFGUID(IID_IWICImagingFactory),
(LPVOID*)&factory));
if (hr == REGDB_E_CLASSNOTREG) {
fprintf(stderr,
"Couldn't access Windows Imaging Component (are you running "
"Windows XP SP3 or newer?). Most formats not available. "
"Use -s for the available YUV input.\n");
}
// Prepare for image decoding.
IFS(OpenInputStream(filename, &stream));
IFS(IWICImagingFactory_CreateDecoderFromStream(
factory, stream, NULL,
WICDecodeMetadataCacheOnDemand, &decoder));
IFS(IWICBitmapDecoder_GetFrameCount(decoder, &frame_count));
if (SUCCEEDED(hr)) {
if (frame_count == 0) {
fprintf(stderr, "No frame found in input file.\n");
hr = E_FAIL;
} else if (frame_count > 1) {
// WIC will be tried before native WebP decoding so avoid duplicating the
// error message.
hr = E_FAIL;
}
}
IFS(IWICBitmapDecoder_GetFrame(decoder, 0, &frame));
IFS(IWICBitmapFrameDecode_GetPixelFormat(frame, &src_pixel_format));
IFS(IWICBitmapDecoder_GetContainerFormat(decoder, &src_container_format));
if (SUCCEEDED(hr) && keep_alpha) {
const GUID** guid;
for (guid = kAlphaContainers; *guid != NULL; ++guid) {
if (IsEqualGUID(MAKE_REFGUID(src_container_format),
MAKE_REFGUID(**guid))) {
has_alpha = HasAlpha(factory, decoder, frame, src_pixel_format);
break;
}
}
}
// Prepare for pixel format conversion (if necessary).
IFS(IWICImagingFactory_CreateFormatConverter(factory, &converter));
for (importer = has_alpha ? kAlphaFormatImporters : kNonAlphaFormatImporters;
hr == S_OK && importer->import != NULL; ++importer) {
BOOL can_convert;
const HRESULT cchr = IWICFormatConverter_CanConvert(
converter,
MAKE_REFGUID(src_pixel_format),
MAKE_REFGUID(*importer->pixel_format),
&can_convert);
if (SUCCEEDED(cchr) && can_convert) break;
}
if (importer->import == NULL) hr = E_FAIL;
IFS(IWICFormatConverter_Initialize(converter, (IWICBitmapSource*)frame,
importer->pixel_format,
WICBitmapDitherTypeNone,
NULL, 0.0, WICBitmapPaletteTypeCustom));
// Decode.
IFS(IWICFormatConverter_GetSize(converter, &width, &height));
stride = (int64_t)importer->bytes_per_pixel * width * sizeof(*rgb);
if (stride != (int)stride ||
!ImgIoUtilCheckSizeArgumentsOverflow(stride, height)) {
hr = E_FAIL;
}
if (SUCCEEDED(hr)) {
rgb = (BYTE*)malloc((size_t)stride * height);
if (rgb == NULL)
hr = E_OUTOFMEMORY;
}
IFS(IWICFormatConverter_CopyPixels(converter, NULL,
(UINT)stride, (UINT)stride * height, rgb));
// WebP conversion.
if (SUCCEEDED(hr)) {
int ok;
pic->width = width;
pic->height = height;
pic->use_argb = 1; // For WIC, we always force to argb
ok = importer->import(pic, rgb, (int)stride);
if (!ok) hr = E_FAIL;
}
if (SUCCEEDED(hr)) {
if (metadata != NULL) {
hr = ExtractMetadata(factory, frame, metadata);
if (FAILED(hr)) {
fprintf(stderr, "Error extracting image metadata using WIC!\n");
}
}
}
// Cleanup.
if (converter != NULL) IUnknown_Release(converter);
if (frame != NULL) IUnknown_Release(frame);
if (decoder != NULL) IUnknown_Release(decoder);
if (factory != NULL) IUnknown_Release(factory);
if (stream != NULL) IUnknown_Release(stream);
free(rgb);
return SUCCEEDED(hr);
}
#else // !HAVE_WINCODEC_H
int ReadPictureWithWIC(const char* const filename,
struct WebPPicture* const pic, int keep_alpha,
struct Metadata* const metadata) {
(void)filename;
(void)pic;
(void)keep_alpha;
(void)metadata;
fprintf(stderr, "Windows Imaging Component (WIC) support not compiled. "
"Visual Studio and mingw-w64 builds support WIC. Make sure "
"wincodec.h detection is working correctly if using autoconf "
"and HAVE_WINCODEC_H is defined before building.\n");
return 0;
}
#endif // HAVE_WINCODEC_H
// -----------------------------------------------------------------------------

34
external/libwebp/libwebp/imageio/wicdec.h vendored
View File

@ -1,34 +0,0 @@
// Copyright 2013 Google Inc. All Rights Reserved.
//
// Use of this source code is governed by a BSD-style license
// that can be found in the COPYING file in the root of the source
// tree. An additional intellectual property rights grant can be found
// in the file PATENTS. All contributing project authors may
// be found in the AUTHORS file in the root of the source tree.
// -----------------------------------------------------------------------------
//
// Windows Imaging Component (WIC) decode.
#ifndef WEBP_IMAGEIO_WICDEC_H_
#define WEBP_IMAGEIO_WICDEC_H_
#ifdef __cplusplus
extern "C" {
#endif
struct Metadata;
struct WebPPicture;
// Reads an image from 'filename', returning the decoded output in 'pic'.
// If 'keep_alpha' is true and the image has an alpha channel, the output is
// RGBA otherwise it will be RGB. pic->use_argb is always forced to true.
// Returns true on success.
int ReadPictureWithWIC(const char* const filename,
struct WebPPicture* const pic, int keep_alpha,
struct Metadata* const metadata);
#ifdef __cplusplus
} // extern "C"
#endif
#endif // WEBP_IMAGEIO_WICDEC_H_

106
external/libwebp/libwebp/infra/common.sh vendored
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@ -1,106 +0,0 @@
# Copyright (c) 2021, Google Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# * Neither the name of Google nor the names of its contributors may
# be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
log_err() {
echo "[$(date +'%Y-%m-%dT%H:%M:%S%z')]: $*" >&2
}
#######################################
# Create build directory. Build directory will be deleted if it exists.
# Arguments:
# None.
# Returns:
# mkdir result.
#######################################
make_build_dir() {
if [[ "$#" -ne 1 ]]; then
return 1
fi
local build_dir
build_dir="$1"
rm -rf "${build_dir}"
mkdir -p "${build_dir}"
}
#######################################
# Cleanup files from the build directory.
# Globals:
# LIBWEBP_ROOT repository's root path.
# Arguments:
# $1 build directory.
#######################################
cleanup() {
# $1 is not completely removed to allow for binary artifacts to be
# extracted.
find "${1:?"Build directory not defined"}" \
\( -name "*.[ao]" -o -name "*.l[ao]" \) -exec rm -f {} +
}
#######################################
# Setup ccache for toolchain.
# Globals:
# PATH
# Arguments:
# None.
#######################################
setup_ccache() {
if [[ -x "$(command -v ccache)" ]]; then
export CCACHE_CPP2=yes
export PATH="/usr/lib/ccache:${PATH}"
fi
}
#######################################
# Detects whether test block should be run in the current test shard.
# Globals:
# TEST_TOTAL_SHARDS: Valid range: [1, N]. Defaults to 1.
# TEST_SHARD_INDEX: Valid range: [0, TEST_TOTAL_SHARDS). Defaults to 0.
# libwebp_test_id: current test number; incremented with each call.
# Arguments:
# None
# Returns:
# true if the shard is active
# false if the shard is inactive
#######################################
shard_should_run() {
TEST_TOTAL_SHARDS=${TEST_TOTAL_SHARDS:=1}
TEST_SHARD_INDEX=${TEST_SHARD_INDEX:=0}
libwebp_test_id=${libwebp_test_id:=-1}
: $((libwebp_test_id += 1))
if [[ "${TEST_SHARD_INDEX}" -lt 0 ||
"${TEST_SHARD_INDEX}" -ge "${TEST_TOTAL_SHARDS}" ]]; then
log_err "Invalid TEST_SHARD_INDEX (${TEST_SHARD_INDEX})!" \
"Expected [0, ${TEST_TOTAL_SHARDS})."
fi
[[ "$((libwebp_test_id % TEST_TOTAL_SHARDS))" -eq "${TEST_SHARD_INDEX}" ]]
}

401
external/libwebp/libwebp/infra/compile.sh vendored
View File

@ -1,401 +0,0 @@
#!/bin/bash
# Copyright (c) 2021, Google Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# * Neither the name of Google nor the names of its contributors may
# be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
set -xe
LIBWEBP_ROOT="$(realpath "$(dirname "$0")/..")"
WORKSPACE=${WORKSPACE:-"$(mktemp -d -t webp.XXX)"}
# shellcheck source=infra/common.sh
source "${LIBWEBP_ROOT}/infra/common.sh"
usage() {
cat << EOF
Usage: compile.sh BUILD_TYPE TARGET
Options:
BUILD_TYPE supported build type: (shared, static, static-debug)
TARGET supported target platforms:
aarch64-linux-clang
aarch64-linux-gnu
arm-linux-gnueabi
arm-neon-linux-gnueabi
cmake
cmake-aarch64
cmake-arm
cmake-clang
disable-near-lossless
disable-sse4.1
disable-stats
force-aligned-32
force-aligned-64
gradle
i686-linux-asan
i686-linux-clang
i686-linux-gnu
i686-w64-mingw32
mips2el-linux-gnu
mips32dspr2el-linux-gnu
mips32eb-linux-gnu
mips32el-linux-gnu
mips32r2el-linux-gnu
mips32r5el-linux-gnu
mips64r2el-linux-gnu
mips64r6el-linux-gnu
native
reduce-csp
reduce-size
reduce-size-disable-stats
visibility-default-gnu
visibility-hidden-clang
visibility-hidden-gnu
wasm
x86_64-linux-clang
x86_64-linux-gnu
x86_64-linux-msan
x86_64-w64-mingw32
Environment variables:
WORKSPACE directory where the build is done
EOF
}
################################################################################
echo "Building libwebp in ${WORKSPACE}"
if [[ ! -d "${WORKSPACE}" ]]; then
log_err "${WORKSPACE} directory does not exist"
exit 1
fi
BUILD_TYPE=${1:?"Build type not defined.$(
echo
usage
)"}
TARGET=${2:?"Target not defined.$(
echo
usage
)"}
readonly BUILD_DIR="${WORKSPACE}/build-${BUILD_TYPE}"
trap 'cleanup ${BUILD_DIR}' EXIT
make_build_dir "${BUILD_DIR}"
config_flags=()
case "${BUILD_TYPE}" in
shared*) ;; # Valid BUILD_TYPE but no setup required
static*) config_flags+=("--disable-shared") ;;
experimental) config_flags+=("--enable-experimental") ;;
*)
log_err "Invalid BUILD_TYPE"
usage
exit 1
;;
esac
if grep -m 1 -q "enable-asserts" "${LIBWEBP_ROOT}/configure.ac"; then
config_flags+=("--enable-asserts")
fi
case "${TARGET}" in
aarch64-linux-clang)
TARGET="aarch64-linux-gnu"
CC="clang"
CC="${CC} --target=aarch64-linux-gnu"
export CC
export CFLAGS="-isystem /usr/aarch64-linux-gnu/include"
;;
arm-linux-gnueabi)
export CFLAGS="-O3 -march=armv7-a -mfloat-abi=softfp -ftree-vectorize"
;;
arm-neon-linux-gnueabi)
TARGET="arm-linux-gnueabi"
CFLAGS="-O3 -march=armv7-a -mfpu=neon -mfloat-abi=softfp -ftree-vectorize"
export CFLAGS
;;
mips2el-linux-gnu)
export CFLAGS="-EL -O2 -mips2"
TARGET="mipsel-linux-gnu"
;;
mips32el-linux-gnu)
export CFLAGS="-EL -O2 -mips32"
TARGET="mipsel-linux-gnu"
;;
mips32r2el-linux-gnu)
export CFLAGS="-EL -O2 -mips32r2"
TARGET="mipsel-linux-gnu"
;;
mips32dspr2el-linux-gnu)
export CFLAGS="-EL -O2 -mdspr2"
TARGET="mipsel-linux-gnu"
;;
mips32r5el-linux-gnu)
export CFLAGS="-EL -O2 -mips32r5 -mmsa"
TARGET="mipsel-linux-gnu"
;;
mips32eb-linux-gnu)
export CFLAGS="-EB -O2 -mips32"
TARGET="mips-linux-gnu"
;;
mips64r2el-linux-gnu)
export CFLAGS="-EL -O2 -mips64r2 -mabi=64"
TARGET="mips64el-linux-gnuabi64"
;;
mips64r6el-linux-gnu)
export CFLAGS="-EL -O2 -mips64r6 -mabi=64 -mmsa"
TARGET="mips-img-linux-gnu"
;;
i686-linux-gnu)
export CC="gcc -m32"
;;
i686-linux-clang)
TARGET="i686-linux-gnu"
export CC="clang -m32"
;;
i686-linux-asan)
TARGET="i686-linux-gnu"
export CC="clang -m32 -fsanitize=address"
;;
i686-linux-msan)
TARGET="i686-linux-gnu"
export CC="clang -m32 -fsanitize=memory"
;;
x86_64-linux-clang)
TARGET="x86_64-linux-gnu"
export CC=clang
;;
x86_64-linux-msan)
TARGET="x86_64-linux-gnu"
export CC="clang -fsanitize=memory"
;;
force-aligned-32)
config_flags+=("--enable-aligned")
TARGET="i686-linux-gnu"
export CC="gcc -m32"
;;
force-aligned-64)
config_flags+=("--enable-aligned")
TARGET="x86_64-linux-gnu"
;;
visibility-default-*)
export CFLAGS="-O2 -g -fvisibility=default"
TARGET="x86_64-linux-gnu"
;;
visibility-hidden-*)
export CFLAGS="-O2 -g -fvisibility=hidden"
if [[ "${TARGET}" = "visibility-hidden-clang" ]]; then
export CC=clang
fi
TARGET="x86_64-linux-gnu"
;;
disable-sse4.1)
grep "${TARGET}" "${LIBWEBP_ROOT}/configure.ac" || exit 0
config_flags+=("--${TARGET}")
TARGET="x86_64-linux-gnu"
;;
disable-near-lossless)
grep "${TARGET}" "${LIBWEBP_ROOT}/configure.ac" || exit 0
config_flags+=("--${TARGET}")
TARGET="x86_64-linux-gnu"
;;
disable-stats)
git -C "${LIBWEBP_ROOT}" grep WEBP_DISABLE_STATS || exit 0
export CFLAGS="-O2 -g -DWEBP_DISABLE_STATS"
TARGET="x86_64-linux-gnu"
;;
reduce-size)
git -C "${LIBWEBP_ROOT}" grep WEBP_REDUCE_SIZE || exit 0
export CFLAGS="-O2 -g -DWEBP_REDUCE_SIZE"
TARGET="x86_64-linux-gnu"
;;
reduce-size-disable-stats)
git -C "${LIBWEBP_ROOT}" grep -e WEBP_DISABLE_STATS -e WEBP_REDUCE_SIZE \
|| exit 0
export CFLAGS="-O2 -g -DWEBP_DISABLE_STATS -DWEBP_REDUCE_SIZE"
TARGET="x86_64-linux-gnu"
;;
reduce-csp)
git -C "${LIBWEBP_ROOT}" grep WEBP_REDUCE_CSP || exit 0
export CFLAGS="-O2 -g -DWEBP_REDUCE_CSP"
TARGET="x86_64-linux-gnu"
;;
x86_64-linux-gnu | *mingw32 | aarch64*) ;; # Default target configuration
# non-configure based builds
native)
setup_ccache
# exercise makefile.unix then quit
make -C "${LIBWEBP_ROOT}" -f makefile.unix -j all
for tgt in extras examples/anim_diff; do
grep -q -m 1 "${tgt}" "${LIBWEBP_ROOT}/makefile.unix" \
&& make -C "${LIBWEBP_ROOT}" -f makefile.unix -j "${tgt}"
done
[[ -d "${LIBWEBP_ROOT}/tests/fuzzer" ]] \
&& make -j -C "${LIBWEBP_ROOT}/tests/fuzzer" -f makefile.unix
exit 0
;;
cmake*)
setup_ccache
# exercise cmake then quit
opts=()
case "${TARGET}" in
cmake-clang)
opts+=("-DCMAKE_C_COMPILER=clang")
;;
cmake-arm)
opts+=("-DCMAKE_C_COMPILER=arm-linux-gnueabi-gcc")
case "${GERRIT_BRANCH:-}" in
portable-intrinsics | 0.6.1) exit 0 ;;
*) ;; # Skip configuration
esac
;;
cmake-aarch64)
opts+=("-DCMAKE_C_COMPILER=aarch64-linux-gnu-gcc")
case "${GERRIT_BRANCH:-}" in
portable-intrinsics | 0.6.1) exit 0 ;;
*) ;; # Skip configuration
esac
;;
*) ;; # Skip configuration
esac
case "${BUILD_TYPE}" in
static*)
opts+=("-DBUILD_SHARED_LIBS=OFF")
;;
experimental)
opts+=("-DWEBP_EXPERIMENTAL_FEATURES=ON" "-DBUILD_SHARED_LIBS=ON")
;;
*)
opts+=("-DBUILD_SHARED_LIBS=ON")
;;
esac
case "${BUILD_TYPE}" in
*debug) opts+=("-DCMAKE_BUILD_TYPE=Debug") ;;
*) opts+=("-DCMAKE_BUILD_TYPE=RelWithDebInfo") ;;
esac
cd "${BUILD_DIR}"
opts+=("-DWEBP_BUILD_CWEBP=ON" "-DWEBP_BUILD_DWEBP=ON")
grep -m 1 -q WEBP_BUILD_GIF2WEBP "${LIBWEBP_ROOT}/CMakeLists.txt" \
&& opts+=("-DWEBP_BUILD_GIF2WEBP=ON")
grep -m 1 -q WEBP_BUILD_IMG2WEBP "${LIBWEBP_ROOT}/CMakeLists.txt" \
&& opts+=("-DWEBP_BUILD_IMG2WEBP=ON")
cmake "${opts[@]}" "${LIBWEBP_ROOT}"
make VERBOSE=1 -j
case "${BUILD_TYPE}" in
static)
mkdir -p examples
cp [cd]webp examples
;;
*) ;; # Skip configuration.
esac
grep "install" "${LIBWEBP_ROOT}/CMakeLists.txt" || exit 0
make DESTDIR="${BUILD_DIR}/webp-install" install/strip
mkdir tmp
cd tmp
cat > CMakeLists.txt << EOF
cmake_minimum_required(VERSION 2.8.7)
project(libwebp C)
find_package(WebP)
if (NOT WebP_FOUND)
message(FATAL_ERROR "WebP package not found")
endif ()
message("WebP_FOUND: \${WebP_FOUND}")
message("WebP_INCLUDE_DIRS: \${WebP_INCLUDE_DIRS}")
message("WebP_LIBRARIES: \${WebP_LIBRARIES}")
message("WEBP_INCLUDE_DIRS: \${WEBP_INCLUDE_DIRS}")
message("WEBP_LIBRARIES: \${WEBP_LIBRARIES}")
EOF
cmake . "${opts[@]}" \
"-DCMAKE_PREFIX_PATH=${BUILD_DIR}/webp-install/usr/local"
exit 0
;;
gradle)
setup_ccache
# exercise gradle then quit
[[ -f "${LIBWEBP_ROOT}/gradlew" ]] || exit 0
cd "${BUILD_DIR}"
# TODO -g / --gradle-user-home could be used if there's a race between jobs
"${LIBWEBP_ROOT}/gradlew" -p "${LIBWEBP_ROOT}" buildAllExecutables
exit 0
;;
wasm)
grep -m 1 -q WEBP_ENABLE_WASM "${LIBWEBP_ROOT}/CMakeLists.txt" || exit 0
opts+=("-DCMAKE_C_COMPILER=clang" "-DWEBP_ENABLE_WASM=ON")
opts+=("-DWEBP_BUILD_CWEBP=ON" "-DWEBP_BUILD_DWEBP=ON")
case "${BUILD_TYPE}" in
*debug) opts+=("-DCMAKE_BUILD_TYPE=Debug") ;;
*) opts+=("-DCMAKE_BUILD_TYPE=RelWithDebInfo") ;;
esac
cd "${BUILD_DIR}"
cmake "${opts[@]}" "${LIBWEBP_ROOT}"
make VERBOSE=1 -j
mkdir examples
case "${BUILD_TYPE}" in
static)
mkdir -p examples
cp [cd]webp examples
;;
*) ;; # Skip configuration
esac
exit 0
;;
*)
log_err "Invalid TARGET"
usage
exit 1
;;
esac
case "${TARGET}" in
*mingw32) ;; # Skip configuration
*)
case "${TARGET}-${CC}" in
static-debug-gcc* | static-debug-)
CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage -O0 -g"
CXXFLAGS="${CXXFLAGS} -fprofile-arcs -ftest-coverage -O0 -g"
export CFLAGS CXXFLAGS
;;
*) ;; # This case should not be reached.
esac
;;
esac
setup_ccache
cd "${LIBWEBP_ROOT}"
./autogen.sh
cd "${BUILD_DIR}"
"${LIBWEBP_ROOT}/configure" \
--host "${TARGET}" --build "$("${LIBWEBP_ROOT}/config.guess")" \
--enable-everything "${config_flags[@]}"
make -j V=1

224
external/libwebp/libwebp/infra/compile_android.sh vendored
View File

@ -1,224 +0,0 @@
#!/bin/bash
# Copyright (c) 2021, Google Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# * Neither the name of Google nor the names of its contributors may
# be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
set -xe
LIBWEBP_ROOT="$(realpath "$(dirname "$0")/..")"
readonly LIBWEBP_ROOT
readonly WORKSPACE=${WORKSPACE:-"$(mktemp -d -t webp.android.XXX)"}
# shellcheck source=infra/common.sh
source "${LIBWEBP_ROOT}/infra/common.sh"
usage() {
cat << EOF
Usage: $(basename "$0") BUILD_TYPE APP_ABI
Options:
BUILD_TYPE supported build types:
static
static-debug
shared
shared-debug
APP_ABI supported application binary interfaces:
armeabi-v7a
arm64-v8a
x86
x86_64
Environment variables:
WORKSPACE directory where the build is done.
ANDROID_NDK_DIR directory where the android ndk tools are.
EOF
}
################################################################################
echo "Building libwebp for Android in ${WORKSPACE}"
if [[ ! -d "${WORKSPACE}" ]]; then
log_err "${WORKSPACE} directory does not exist."
exit 1
fi
readonly BUILD_TYPE=${1:?"BUILD_TYPE is not defined.$(
echo
usage
)"}
readonly APP_ABI=${2:?"APP_ABI not defined.$(
echo
usage
)"}
readonly ANDROID_NDK_DIR=${ANDROID_NDK_DIR:?"ANDROID_NDK_DIR is not defined.$(
echo
usage
)"}
readonly BUILD_DIR="${WORKSPACE}/build-${BUILD_TYPE}"
readonly STANDALONE_ANDROID_DIR="${WORKSPACE}/android"
if [[ ! -x "${ANDROID_NDK_DIR}/ndk-build" ]]; then
log_err "unable to find ndk-build in ANDROID_NDK_DIR: ${ANDROID_NDK_DIR}."
exit 1
fi
CFLAGS=
LDFLAGS=
opts=()
case "${BUILD_TYPE}" in
*debug)
readonly APP_OPTIM="debug"
CFLAGS="-O0 -g"
opts+=("--enable-asserts")
;;
static* | shared*)
readonly APP_OPTIM="release"
CFLAGS="-O2 -g"
;;
*)
usage
exit 1
;;
esac
case "${BUILD_TYPE}" in
shared*) readonly SHARED="1" ;;
*)
readonly SHARED="0"
CFLAGS="${CFLAGS} -fPIE"
LDFLAGS="${LDFLAGS} -Wl,-pie"
opts+=("--disable-shared")
;;
esac
# Create a fresh build directory
make_build_dir "${BUILD_DIR}"
cd "${BUILD_DIR}"
ln -s "${LIBWEBP_ROOT}" jni
"${ANDROID_NDK_DIR}/ndk-build" -j2 \
APP_ABI="${APP_ABI}" \
APP_OPTIM="${APP_OPTIM}" \
ENABLE_SHARED="${SHARED}"
cd "${LIBWEBP_ROOT}"
./autogen.sh
case "${APP_ABI}" in
armeabi*) arch="arm" ;;
arm64*) arch="arm64" ;;
*) arch="${APP_ABI}" ;;
esac
# TODO(b/185520507): remove this and use the binaries from
# toolchains/llvm/prebuilt/ directly.
rm -rf "${STANDALONE_ANDROID_DIR}"
"${ANDROID_NDK_DIR}/build/tools/make_standalone_toolchain.py" \
--api 24 --arch "${arch}" --stl gnustl --install-dir \
"${STANDALONE_ANDROID_DIR}"
export PATH="${STANDALONE_ANDROID_DIR}/bin:${PATH}"
rm -rf "${BUILD_DIR}"
make_build_dir "${BUILD_DIR}"
cd "${BUILD_DIR}"
case "${arch}" in
arm)
host="arm-linux-androideabi"
case "${APP_ABI}" in
armeabi) ;;
armeabi-v7a)
CFLAGS="${CFLAGS} -march=armv7-a -mfpu=neon -mfloat-abi=softfp"
;;
*) ;; # No configuration needed
esac
;;
arm64)
host="aarch64-linux-android"
;;
x86)
host="i686-linux-android"
;;
x86_64)
host="x86_64-linux-android"
;;
*) ;; # Skip configuration
esac
setup_ccache
CC="clang"
"${LIBWEBP_ROOT}/configure" --host "${host}" --build \
"$("${LIBWEBP_ROOT}/config.guess")" CC="${CC}" CFLAGS="${CFLAGS}" \
LDFLAGS="${LDFLAGS}" "${opts[@]}"
make -j
if [[ "${GERRIT_REFSPEC:-}" = "refs/heads/portable-intrinsics" ]] \
|| [[ "${GERRIT_BRANCH:-}" = "portable-intrinsics" ]]; then
cd "${WORKSPACE}"
rm -rf build && mkdir build
cd build
standalone="${WORKSPACE}/android"
cmake ../libwebp \
-DWEBP_BUILD_DWEBP=1 \
-DCMAKE_C_COMPILER="${standalone}/bin/clang" \
-DCMAKE_PREFIX_PATH="${standalone}/sysroot/usr/lib" \
-DCMAKE_C_FLAGS=-fPIE \
-DCMAKE_EXE_LINKER_FLAGS=-Wl,-pie \
-DCMAKE_BUILD_TYPE=Release \
-DWEBP_ENABLE_WASM=1
make -j2
cd "${WORKSPACE}"
make_build_dir "${BUILD_DIR}"
cd "${BUILD_DIR}"
case "${APP_ABI}" in
armeabi-v7a | arm64*)
cmake "${LIBWEBP_ROOT}" \
-DWEBP_BUILD_DWEBP=1 \
-DCMAKE_C_COMPILER="${standalone}/bin/clang" \
-DCMAKE_PREFIX_PATH="${standalone}/sysroot/usr/lib" \
-DCMAKE_C_FLAGS='-fPIE -DENABLE_NEON_BUILTIN_MULHI_INT16X8' \
-DCMAKE_EXE_LINKER_FLAGS=-Wl,-pie \
-DCMAKE_BUILD_TYPE=Release \
-DWEBP_ENABLE_WASM=1
make -j2
;;
x86*)
cmake "${LIBWEBP_ROOT}" \
-DWEBP_BUILD_DWEBP=1 \
-DCMAKE_C_COMPILER="${standalone}/bin/clang" \
-DCMAKE_PREFIX_PATH="${standalone}/sysroot/usr/lib" \
-DCMAKE_C_FLAGS='-fPIE -DENABLE_X86_BUILTIN_MULHI_INT16X8' \
-DCMAKE_EXE_LINKER_FLAGS=-Wl,-pie \
-DCMAKE_BUILD_TYPE=Release \
-DWEBP_ENABLE_WASM=1
make -j2
;;
*)
log_err "APP_ABI not supported."
exit 1
;;
esac
fi

75
external/libwebp/libwebp/infra/compile_js.sh vendored
View File

@ -1,75 +0,0 @@
#!/bin/bash
# Copyright (c) 2021, Google Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# * Neither the name of Google nor the names of its contributors may
# be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
set -ex
readonly WORKSPACE="${WORKSPACE:-"$(mktemp -d -t webp.js.XXX)"}"
readonly BUILD_DIR="${WORKSPACE}/webp_js/"
readonly LIBWEBP_ROOT="$(realpath "$(dirname "$0")/..")"
# shellcheck source=infra/common.sh
source "${LIBWEBP_ROOT}/infra/common.sh"
usage() {
cat << EOF
Usage: $(basename "$0")
Environment variables:
WORKSPACE directory where the build is done
EMSDK_DIR directory where emsdk is installed
EOF
}
[[ -d "${EMSDK_DIR:?Not defined}" ]] \
|| (log_err "${EMSDK_DIR} is not a valid directory." && exit 1)
# shellcheck source=/opt/emsdk/emsdk_env.sh
source "${EMSDK_DIR}/emsdk_env.sh"
readonly EMSCRIPTEN=${EMSCRIPTEN:-"${EMSDK}/upstream/emscripten"}
readonly \
EMSCRIPTEN_CMAKE_FILE="${EMSCRIPTEN}/cmake/Modules/Platform/Emscripten.cmake"
make_build_dir "${BUILD_DIR}"
pushd "${BUILD_DIR}"
opts=("-GUnix Makefiles" "-DWEBP_BUILD_WEBP_JS=ON")
if [[ -z "$(command -v emcmake)" ]]; then
opts+=("-DCMAKE_TOOLCHAIN_FILE=${EMSCRIPTEN_CMAKE_FILE}")
cmake \
"${opts[@]}" \
"${LIBWEBP_ROOT}"
make -j
else
emcmake cmake \
"${opts[@]}" \
"${LIBWEBP_ROOT}"
emmake make -j
fi
popd

98
external/libwebp/libwebp/infra/run_static_analysis.sh vendored
View File

@ -1,98 +0,0 @@
#!/bin/bash
# Copyright (c) 2021, Google Inc. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
#
# * Neither the name of Google nor the names of its contributors may
# be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
set -xe
LIBWEBP_ROOT="$(realpath "$(dirname "$0")/..")"
readonly LIBWEBP_ROOT
readonly WORKSPACE=${WORKSPACE:-"$(mktemp -d -t webp.scanbuild.XXX)"}
# shellcheck source=infra/common.sh
source "${LIBWEBP_ROOT}/infra/common.sh"
usage() {
cat << EOF
Usage: $(basename "$0") MODE
Options:
MODE supported scan modes: (shallow|deep)
Environment variables:
WORKSPACE directory where the build is done.
EOF
}
#######################################
# Wrap clang-tools scan-build.
# Globals:
# OUTPUT_DIR target directory where scan-build report is generated.
# MODE scan-build mode
# Arguments:
# $* scan-build additional args.
# Returns:
# scan-build retcode
#######################################
scan_build() {
scan-build -o "${OUTPUT_DIR}" --use-analyzer="$(command -v clang)" \
-analyzer-config mode="${MODE}" "$*"
}
MODE=${1:?"MODE is not specified.$(
echo
usage
)"}
readonly OUTPUT_DIR="${WORKSPACE}/output-${MODE}"
readonly BUILD_DIR="${WORKSPACE}/build"
make_build_dir "${OUTPUT_DIR}"
make_build_dir "${BUILD_DIR}"
cd "${LIBWEBP_ROOT}"
./autogen.sh
cd "${BUILD_DIR}"
grep -m 1 -q 'enable-asserts' "${LIBWEBP_ROOT}/configure.ac" \
&& args='--enable-asserts'
scan_build "${LIBWEBP_ROOT}/configure" --enable-everything "${args}"
scan_build make -j4
index="$(find "${OUTPUT_DIR}" -name index.html)"
if [[ -f "${index}" ]]; then
mv "$(dirname "${index}")/"* "${OUTPUT_DIR}"
else
# make a empty report to wipe out any old bug reports.
cat << EOT > "${OUTPUT_DIR}/index.html"
<html>
<body>
No bugs reported.
</body>
</html>
EOT
fi

168
external/libwebp/libwebp/iosbuild.sh vendored
View File

@ -1,168 +0,0 @@
#!/bin/bash
#
# This script generates 'WebP.framework' and 'WebPDecoder.framework',
# 'WebPDemux.framework' and 'WebPMux.framework'.
# An iOS app can decode WebP images by including 'WebPDecoder.framework' and
# both encode and decode WebP images by including 'WebP.framework'.
#
# Run ./iosbuild.sh to generate the frameworks under the current directory
# (the previous build will be erased if it exists).
#
# This script is inspired by the build script written by Carson McDonald.
# (https://www.ioncannon.net/programming/1483/using-webp-to-reduce-native-ios-app-size/).
set -e
# Set this variable based on the desired minimum deployment target.
readonly IOS_MIN_VERSION=6.0
# Extract the latest SDK version from the final field of the form: iphoneosX.Y
readonly SDK=$(xcodebuild -showsdks \
| grep iphoneos | sort | tail -n 1 | awk '{print substr($NF, 9)}'
)
# Extract Xcode version.
readonly XCODE=$(xcodebuild -version | grep Xcode | cut -d " " -f2)
if [[ -z "${XCODE}" ]]; then
echo "Xcode not available"
exit 1
fi
readonly OLDPATH=${PATH}
# Add iPhoneOS-V6 to the list of platforms below if you need armv6 support.
# Note that iPhoneOS-V6 support is not available with the iOS6 SDK.
PLATFORMS="iPhoneSimulator iPhoneSimulator64"
PLATFORMS+=" iPhoneOS-V7 iPhoneOS-V7s iPhoneOS-V7-arm64"
readonly PLATFORMS
readonly SRCDIR=$(dirname $0)
readonly TOPDIR=$(pwd)
readonly BUILDDIR="${TOPDIR}/iosbuild"
readonly TARGETDIR="${TOPDIR}/WebP.framework"
readonly DECTARGETDIR="${TOPDIR}/WebPDecoder.framework"
readonly MUXTARGETDIR="${TOPDIR}/WebPMux.framework"
readonly DEMUXTARGETDIR="${TOPDIR}/WebPDemux.framework"
readonly DEVELOPER=$(xcode-select --print-path)
readonly PLATFORMSROOT="${DEVELOPER}/Platforms"
readonly LIPO=$(xcrun -sdk iphoneos${SDK} -find lipo)
LIBLIST=''
DECLIBLIST=''
MUXLIBLIST=''
DEMUXLIBLIST=''
if [[ -z "${SDK}" ]]; then
echo "iOS SDK not available"
exit 1
elif [[ ${SDK%%.*} -gt 8 ]]; then
EXTRA_CFLAGS="-fembed-bitcode"
elif [[ ${SDK%%.*} -le 6 ]]; then
echo "You need iOS SDK version 6.0 or above"
exit 1
fi
echo "Xcode Version: ${XCODE}"
echo "iOS SDK Version: ${SDK}"
if [[ -e "${BUILDDIR}" || -e "${TARGETDIR}" || -e "${DECTARGETDIR}" \
|| -e "${MUXTARGETDIR}" || -e "${DEMUXTARGETDIR}" ]]; then
cat << EOF
WARNING: The following directories will be deleted:
WARNING: ${BUILDDIR}
WARNING: ${TARGETDIR}
WARNING: ${DECTARGETDIR}
WARNING: ${MUXTARGETDIR}
WARNING: ${DEMUXTARGETDIR}
WARNING: The build will continue in 5 seconds...
EOF
sleep 5
fi
rm -rf ${BUILDDIR} ${TARGETDIR} ${DECTARGETDIR} \
${MUXTARGETDIR} ${DEMUXTARGETDIR}
mkdir -p ${BUILDDIR} ${TARGETDIR}/Headers/ ${DECTARGETDIR}/Headers/ \
${MUXTARGETDIR}/Headers/ ${DEMUXTARGETDIR}/Headers/
if [[ ! -e ${SRCDIR}/configure ]]; then
if ! (cd ${SRCDIR} && sh autogen.sh); then
cat << EOF
Error creating configure script!
This script requires the autoconf/automake and libtool to build. MacPorts can
be used to obtain these:
https://www.macports.org/install.php
EOF
exit 1
fi
fi
for PLATFORM in ${PLATFORMS}; do
ARCH2=""
if [[ "${PLATFORM}" == "iPhoneOS-V7-arm64" ]]; then
PLATFORM="iPhoneOS"
ARCH="aarch64"
ARCH2="arm64"
elif [[ "${PLATFORM}" == "iPhoneOS-V7s" ]]; then
PLATFORM="iPhoneOS"
ARCH="armv7s"
elif [[ "${PLATFORM}" == "iPhoneOS-V7" ]]; then
PLATFORM="iPhoneOS"
ARCH="armv7"
elif [[ "${PLATFORM}" == "iPhoneOS-V6" ]]; then
PLATFORM="iPhoneOS"
ARCH="armv6"
elif [[ "${PLATFORM}" == "iPhoneSimulator64" ]]; then
PLATFORM="iPhoneSimulator"
ARCH="x86_64"
else
ARCH="i386"
fi
ROOTDIR="${BUILDDIR}/${PLATFORM}-${SDK}-${ARCH}"
mkdir -p "${ROOTDIR}"
DEVROOT="${DEVELOPER}/Toolchains/XcodeDefault.xctoolchain"
SDKROOT="${PLATFORMSROOT}/"
SDKROOT+="${PLATFORM}.platform/Developer/SDKs/${PLATFORM}${SDK}.sdk/"
CFLAGS="-arch ${ARCH2:-${ARCH}} -pipe -isysroot ${SDKROOT} -O3 -DNDEBUG"
CFLAGS+=" -miphoneos-version-min=${IOS_MIN_VERSION} ${EXTRA_CFLAGS}"
set -x
export PATH="${DEVROOT}/usr/bin:${OLDPATH}"
${SRCDIR}/configure --host=${ARCH}-apple-darwin --prefix=${ROOTDIR} \
--build=$(${SRCDIR}/config.guess) \
--disable-shared --enable-static \
--enable-libwebpdecoder --enable-swap-16bit-csp \
--enable-libwebpmux \
CFLAGS="${CFLAGS}"
set +x
# Build only the libraries, skip the examples.
make V=0 -C sharpyuv
make V=0 -C src install
LIBLIST+=" ${ROOTDIR}/lib/libwebp.a"
DECLIBLIST+=" ${ROOTDIR}/lib/libwebpdecoder.a"
MUXLIBLIST+=" ${ROOTDIR}/lib/libwebpmux.a"
DEMUXLIBLIST+=" ${ROOTDIR}/lib/libwebpdemux.a"
make clean
export PATH=${OLDPATH}
done
echo "LIBLIST = ${LIBLIST}"
cp -a ${SRCDIR}/src/webp/{decode,encode,types}.h ${TARGETDIR}/Headers/
${LIPO} -create ${LIBLIST} -output ${TARGETDIR}/WebP
echo "DECLIBLIST = ${DECLIBLIST}"
cp -a ${SRCDIR}/src/webp/{decode,types}.h ${DECTARGETDIR}/Headers/
${LIPO} -create ${DECLIBLIST} -output ${DECTARGETDIR}/WebPDecoder
echo "MUXLIBLIST = ${MUXLIBLIST}"
cp -a ${SRCDIR}/src/webp/{types,mux,mux_types}.h \
${MUXTARGETDIR}/Headers/
${LIPO} -create ${MUXLIBLIST} -output ${MUXTARGETDIR}/WebPMux
echo "DEMUXLIBLIST = ${DEMUXLIBLIST}"
cp -a ${SRCDIR}/src/webp/{decode,types,mux_types,demux}.h \
${DEMUXTARGETDIR}/Headers/
${LIPO} -create ${DEMUXLIBLIST} -output ${DEMUXTARGETDIR}/WebPDemux
echo "SUCCESS"

2
external/libwebp/libwebp/m4/.gitignore vendored
View File

@ -1,2 +0,0 @@
/libtool.m4
/lt*.m4

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