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mirror of https://github.com/Tha14/toxic.git synced 2024-12-23 04:53:24 +01:00

Progress on implementing v4l2 in video_device.*

This commit is contained in:
cnhenry 2015-07-19 09:51:35 -05:00
parent a33e5f4bec
commit 8f28f1d748
6 changed files with 364 additions and 28 deletions

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@ -8,7 +8,7 @@ else
endif
# Variables for video call support
VIDEO_LIBS = libtoxav Xlib
VIDEO_LIBS = libtoxav vpx x11
VIDEO_CFLAGS = -DVIDEO
ifneq (, $(findstring video_device.o, $(OBJ)))
VIDEO_OBJ = video_call.o

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@ -20,8 +20,8 @@
*
*/
#ifndef AUDIO_H
#define AUDIO_H
#ifndef AUDIO_CALL_H
#define AUDIO_CALL_H
#include <tox/toxav.h>
@ -48,4 +48,4 @@ int start_transmission(ToxWindow *self, Call *call);
int stop_transmission(Call *call, int friend_number);
void stop_current_call(ToxWindow *self);
#endif /* AUDIO_H */
#endif /* AUDIO_CALL_H */

0
src/video_call.c Normal file
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43
src/video_call.h Normal file
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@ -0,0 +1,43 @@
/* video_call.h
*
*
* Copyright (C) 2014 Toxic All Rights Reserved.
*
* This file is part of Toxic.
*
* Toxic is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Toxic is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Toxic. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef VIDEO_CALL_H
#define VIDEO_CALL_H
#include <tox/toxav.h>
#include "video_device.h"
typedef enum _VideoError {
ve_None = 0,
ve_StartingCaptureDevice = 1 << 0,
ve_StartingOutputDevice = 1 << 1,
ve_StartingCoreAudio = 1 << 2
} VideoError;
/* You will have to pass pointer to first member of 'windows' declared in windows.c */
ToxAV *init_video(ToxWindow *self, Tox *tox);
void terminate_video();
//int start_video_transmission(ToxWindow *self, Call *call);
//int stop_video_transmission(Call *call, int friend_number);
#endif /* VIDEO_CALL_H */

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@ -27,12 +27,18 @@
#endif /* VIDEO */
#ifdef __linux__
#include "linux/videodev2.h"
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <linux/videodev2.h>
#endif /* __linux__ */
#include "line_info.h"
#include "settings.h"
#include <errno.h>
#include <stdbool.h>
#include <string.h>
#include <pthread.h>
@ -44,25 +50,32 @@
extern struct user_settings *user_settings;
struct VideoBuffer {
void *start;
size_t length;
};
typedef struct VideoDevice {
//ALCdevice *dhndl; /* Handle of device selected/opened */
//ALCcontext *ctx; /* Device context */
int fd; /* File descriptor of video device selected/opened */
DataHandleCallback cb; /* Use this to handle data from input device usually */
void* cb_data; /* Data to be passed to callback */
int32_t friend_number; /* ToxAV friend number */
uint32_t source, buffers[OPENAL_BUFS]; /* Playback source/buffers */
struct v4l2_format fmt;
struct VideoBuffer *buffers;
uint32_t n_buffers;
uint32_t ref_count;
int32_t selection;
pthread_mutex_t mutex[1];
uint32_t sample_rate;
uint32_t frame_duration;
uint16_t video_width;
uint16_t video_height;
} VideoDevice;
const char *ddevice_names[2]; /* Default device */
const char *devices_names[2][MAX_DEVICES]; /* Container of available devices */
static int size[2]; /* Size of above containers */
Device *running[2][MAX_DEVICES] = {{NULL}}; /* Running devices */
VideoDevice *running[2][MAX_DEVICES] = {{NULL}}; /* Running devices */
uint32_t primary_device[2]; /* Primary device */
#ifdef VIDEO
@ -72,34 +85,47 @@ static ToxAV* av = NULL;
/* q_mutex */
#define lock pthread_mutex_lock(&mutex);
#define unlock pthread_mutex_unlock(&mutex);
pthread_mutext_t mutex;
pthread_mutex_t mutex;
bool thread_running = true,
thread_paused = true; /* Thread control */
void* thread_poll(void*);
static int xioctl(int fh, unsigned long request, void *arg)
{
int r;
do {
r = ioctl(fh, request, arg);
} while (-1 == r && EINTR == errno);
return r;
}
/* Meet devices */
#ifndef VIDEO
#ifdef VIDEO
VideoDeviceError init_video_devices(ToxAV* av_)
#else
VideoDeviceError init_video_devices()
#endif /* VIDEO */
{
size[input] = 0;
#ifdef __linux__
for(int i = 0; <= MAX_DEVICES; ++i) {
int v4l_fd;
for(int i = 0; i <= MAX_DEVICES; ++i) {
int fd;
struct v4l2_capability cap;
char *dev_name;
char *device_address;
v4l_fd = open(dev_name, O_RDWR | O_NONBLOCK, 0);
if (v4l_fd == -1)
fd = open(device_address, O_RDWR | O_NONBLOCK, 0);
if (fd == -1)
break;
else {
device_names[input][i] = video_cap.card;
devices_names[input][i] = cap.card;
}
close(v4l_fd);
close(fd);
size[input] = i;
}
#endif /* __linux__ */
@ -113,7 +139,7 @@ VideoDeviceError init_video_devices(ToxAV* av_)
return vde_InternalError;
pthread_t thread_id;
if ( pthread_create(&thread_id, NULL, thread_poll, NULL) != 0 || pthread_detatch(thread_id) != 0)
if ( pthread_create(&thread_id, NULL, thread_poll, NULL) != 0 || pthread_detach(thread_id) != 0)
return vde_InternalError;
#ifdef VIDEO
@ -133,4 +159,271 @@ VideoDeviceError terminate_video_devices()
return (VideoDeviceError) vde_InternalError;
return (VideoDeviceError) vde_None;
}
VideoDeviceError set_primary_video_device(VideoDeviceType type, int32_t selection)
{
if (size[type] <= selection || selection < 0) return vde_InvalidSelection;
primary_device[type] = selection;
return vde_None;
}
VideoDeviceError open_primary_video_device(VideoDeviceType type, uint32_t* device_idx)
{
return open_video_device(type, primary_device[type], device_idx);
}
void get_primary_device_name(VideoDeviceType type, char *buf, int size)
{
memcpy(buf, ddevice_names[type], size);
}
VideoDeviceError open_video_device(VideoDeviceType type, int32_t selection, uint32_t* device_idx)
{
if (size[type] <= selection || selection < 0) return vde_InvalidSelection;
lock;
uint32_t i;
for (i = 0; i < MAX_DEVICES && running[type][i] != NULL; ++i);
if (i == MAX_DEVICES) { unlock; return vde_AllDevicesBusy; }
else *device_idx = i;
for (i = 0; i < MAX_DEVICES; i ++) { /* Check if any device has the same selection */
if ( running[type][i] && running[type][i]->selection == selection ) {
running[type][*device_idx] = running[type][i];
running[type][i]->ref_count ++;
unlock;
return vde_None;
}
}
VideoDevice* device = running[type][*device_idx] = calloc(1, sizeof(VideoDevice));
device->selection = selection;
if (pthread_mutex_init(device->mutex, NULL) != 0) {
free(device);
unlock;
return vde_InternalError;
}
if (type == input) {
char device_address[] = "/dev/videoXX";
snprintf(device_address + 10 , sizeof(device_address) - 10, "%i", selection);
device->fd = open(device_address, O_RDWR);
if ( device->fd == -1 )
return vde_FailedStart;
}
else {
}
if (type == input) {
#ifdef __linux__
/* Obtain video device capabilities */
struct v4l2_capability cap;
if (-1 == xioctl(device->fd, VIDIOC_QUERYCAP, &cap)) {
return vde_UnsupportedMode;
}
/* Setup video format */
struct v4l2_format fmt;
memset(&(fmt), 0, sizeof(fmt));
fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUV420;
if(-1 == xioctl(device->fd, VIDIOC_G_FMT, &fmt)) {
return vde_UnsupportedMode;
}
device->video_width = fmt.fmt.pix.width;
device->video_height = fmt.fmt.pix.height;
/* Request buffers */
struct v4l2_requestbuffers req;
memset(&(req), 0, sizeof(req));
req.count = 4;
req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
req.memory = V4L2_MEMORY_MMAP;
if (-1 == xioctl(device->fd, VIDIOC_REQBUFS, &req)) {
return vde_UnsupportedMode;
}
if(req.count < 2) {
return vde_UnsupportedMode;
}
device->buffers = calloc(req.count, sizeof(*device->buffers));
for(i = 0; i < req.count; ++i) {
struct v4l2_buffer buf;
memset(&(buf), 0, sizeof(buf));
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = device->n_buffers;
device->n_buffers = i;
if (-1 == xioctl(device->fd, VIDIOC_QUERYBUF, &buf)) {
return vde_UnsupportedMode;
}
device->buffers[i].length = buf.length;
device->buffers[i].start = mmap(NULL /* start anywhere */,
buf.length,
PROT_READ | PROT_WRITE /* required */,
MAP_SHARED /* recommended */,
device->fd, buf.m.offset);
if(MAP_FAILED == device->buffers[i].start) {
return vde_UnsupportedMode;
}
}
enum v4l2_buf_type type;
for (i = 0; i < device->n_buffers; ++i) {
struct v4l2_buffer buf;
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
buf.index = i;
if (-1 == xioctl(device->fd, VIDIOC_QBUF, &buf)) {
return vde_FailedStart;
}
}
type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
if (-1 == xioctl(device->fd, VIDIOC_STREAMON, &type)) {
return vde_FailedStart;
}
#endif /* __linux__ */
/*TODO: Add OSX implementation of opening video devices */
thread_paused = false;
}
unlock;
return vde_None;
}
void* thread_poll (void* arg) // TODO: maybe use thread for every input source
{
/*
* NOTE: We only need to poll input devices for data.
*/
(void)arg;
uint32_t i;
while (thread_running)
{
if (thread_paused) usleep(10000); /* Wait for unpause. */
else
{
for (i = 0; i < size[input]; ++i)
{
lock;
if (running[input][i] != NULL)
{
VideoDevice* device = running[input][i];
struct v4l2_buffer buf;
memset(&(buf), 0, sizeof(buf));
buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
buf.memory = V4L2_MEMORY_MMAP;
if (-1 == ioctl(device->fd, VIDIOC_DQBUF, &buf)) {
unlock;
continue;
}
void *data = (void*)device->buffers[buf.index].start;
uint8_t *y;
uint8_t *u;
uint8_t *v;
yuv422to420(y, u, v, data, device->video_width, device->video_width);
if ( device->cb ) device->cb(device->video_width, device->video_height, y, u, v, device->cb_data);
if (-1 == xioctl(device->fd, VIDIOC_QBUF, &buf)) {
unlock;
continue;
}
}
unlock;
}
usleep(5000);
}
}
pthread_exit(NULL);
}
VideoDeviceError close_video_device(VideoDeviceType type, uint32_t device_idx)
{
if (device_idx >= MAX_DEVICES) return vde_InvalidSelection;
lock;
VideoDevice* device = running[type][device_idx];
VideoDeviceError rc = vde_None;
if (!device) {
unlock;
return vde_DeviceNotActive;
}
running[type][device_idx] = NULL;
if ( !device->ref_count ) {
if (type == input) {
int i;
for(i = 0; i < device->n_buffers; ++i) {
if (-1 == munmap(device->buffers[i].start, device->buffers[i].length)) {}
}
close(device->fd);
}
else {
}
free(device);
}
else device->ref_count--;
unlock;
return rc;
}
void yuv422to420(uint8_t *plane_y, uint8_t *plane_u, uint8_t *plane_v, uint8_t *input, uint16_t width, uint16_t height)
{
uint8_t *end = input + width * height * 2;
while(input != end) {
uint8_t *line_end = input + width * 2;
while(input != line_end) {
*plane_y++ = *input++;
*plane_v++ = *input++;
*plane_y++ = *input++;
*plane_u++ = *input++;
}
line_end = input + width * 2;
while(input != line_end) {
*plane_y++ = *input++;
input++;//u
*plane_y++ = *input++;
input++;//v
}
}
}

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@ -45,13 +45,13 @@ typedef enum VideoDeviceError {
vde_CaptureError = -9,
} VideoDeviceError;
typedef void (*DataHandleCallback) (const int16_t*, uint32_t size, void* data);
typedef void (*DataHandleCallback) (int16_t width, int16_t height, const uint8_t* y, const uint8_t* u, const uint8_t* v, void* data);
#ifdef VIDEO
DeviceError init_video_devices(ToxAV* av);
VideoDeviceError init_video_devices(ToxAV* av);
#else
DeviceError init_video_devices();
VideoDeviceError init_video_devices();
#endif /* VIDEO */
VideoDeviceError terminate_video_devices();
@ -61,17 +61,17 @@ VideoDeviceError register_video_device_callback(int32_t call_idx, uint32_t devic
void* get_video_device_callback_data(uint32_t device_idx);
VideoDeviceError set_primary_video_device(VideoDeviceType type, int32_t selection);
VideoDeviceError open_primary_video_device(VideoDeviceType type, uint32_t* device_idx, uint32_t sample_rate, uint32_t frame_duration, uint8_t channels);
VideoDeviceError open_primary_video_device(VideoDeviceType type, uint32_t* device_idx);
/* Start device */
VideoDeviceError open_video_device(VideoDeviceType type, int32_t selection, uint32_t* device_idx, uint32_t sample_rate, uint32_t frame_duration, uint8_t channels);
VideoDeviceError open_video_device(VideoDeviceType type, int32_t selection, uint32_t* device_idx);
/* Stop device */
VideoDeviceError close_video_device(VideoDeviceType type, uint32_t device_idx);
/* Write data to device */
VideoDeviceError write_out(uint32_t device_idx, const int16_t* data, uint32_t length, uint8_t channels);
void print_devices(ToxWindow* self, DeviceType type);
void get_primary_device_name(VideoDeviceType type, char *buf, int size);
void print_video_devices(ToxWindow* self, VideoDeviceType type);
void get_primary_video_device_name(VideoDeviceType type, char *buf, int size);
VideoDeviceError selection_valid(VideoDeviceType type, int32_t selection);
#endif /* VIDEO_DEVICE_H */