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mirror of https://github.com/Tha14/toxic.git synced 2024-12-23 04:33:25 +01:00

Implemented OpenCV demo to demonstrate video device listing and set up code structure for video

This commit is contained in:
cnhenry 2015-05-25 16:59:06 -05:00
parent ca1fca5aa5
commit 6e90072fb8
21 changed files with 783 additions and 15 deletions

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@ -1,10 +1,18 @@
# Variables for audio call support
AUDIO_LIBS = libtoxav openal
VIDEO_LIBS = libtoxav opencv
AUDIO_CFLAGS = -DAUDIO
ifneq (, $(findstring device.o, $(OBJ)))
VIDEO_CFLAGS = -DVIDEO
ifneq (, $(findstring audio_device.o, $(OBJ)))
AUDIO_OBJ = audio_call.o
else
AUDIO_OBJ = audio_call.o device.o
AUDIO_OBJ = audio_call.o audio_device.o
endif
ifneq (, $(findstring video_device.o, $(OBJ)))
VIDEO_OBJ = video_call.o
else
VIDEO_OBJ = video_call.o video_device.o
endif
# Check if we can build audio support
@ -19,3 +27,16 @@ else ifneq ($(MAKECMDGOALS), clean)
$(warning WARNING -- You need these libraries for audio support)
$(warning WARNING -- $(MISSING_AUDIO_LIBS))
endif
# Check if we can build video support
CHECK_VIDEO_LIBS = $(shell pkg-config --exists $VIDEO_LIBS) || echo -n "error")
ifneq ($(CHECK_VIDEO_LIBS), error)
LIBS += $(VIDEO_LIBS)
CFLAGS += $(VIDEO_CFLAGS)
OBJ += $(VIDEO_OBJ)
else ifneq ($(MAKECMDGOALS), clean)
MISSING_VIDEO_LIBS = $(shell for lib in $(VIDEO_LIBS) ; do if ! pkg-config --exists $$lib ; then echo $$lib ; fi ; done)
$(warning WARNING -- Toxic will be compiled without video support)
$(warning WARNING -- You need these libraries for video support)
$(warning WARNING -- $(MISSING_VIDEO_LIBS))
endif

7
opencv_demo/Makefile Normal file
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@ -0,0 +1,7 @@
CC=gcc
capture_playback: capture_playback.c
$(CC) -o capture_playback capture_playback.c -lopencv_core -lopencv_highgui
clean:
rm -f capture_playback *.o

1
opencv_demo/README.md Normal file
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@ -0,0 +1 @@
gcc -o example.exe -I C:/opencv/build/include -L C:/opencv/build/x86/vc12/lib capture_playback.c -lopencv_core2411d -lopencv_highgui2411d -luuid -strmiids -lole32 -loleaut32

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@ -0,0 +1,156 @@
#include <stdio.h>
#include <stdlib.h>
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#ifdef __linux__
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/videodev2.h>
#endif /* __linux __ */
#ifdef __WIN32
#include <windows.h>
#include <dshow.h>
#pragma comment(lib, "strmiids.lib")
#endif /* __WIN32 */
#define MAX_DEVICES 32
int main(int argc, char *argv[])
{
const char *device_names[MAX_DEVICES];
int amt_cameras = 0;
int i = 0;
#ifdef __linux__
// Enumerate video capture devices
while(i <= MAX_DEVICES)
{
int fd;
struct v4l2_capability video_cap;
char device_address[256];
snprintf(device_address, sizeof device_address, "/dev/video%d",i);
if((fd = open(device_address, O_RDONLY)) == -1) {
break;
}
else {
// Query capture device information
if(ioctl(fd, VIDIOC_QUERYCAP, &video_cap) == -1)
perror("cam_info: Can't get capabilities");
else {
//printf("Card:\t\t '%s'\n", video_cap.card);
int name_length = sizeof(video_cap.card);
char* name = (char*)malloc(name_length+1);
name = video_cap.card;
device_names[i] = name;
}
close(fd);
amt_cameras = i;
}
++i;
}
#endif /* __linux__ */
#ifdef __WIN32
HRESULT hr;
CoInitialize(NULL);
ICreateDevEnum *pSysDevEnum = NULL;
hr = CoCreateInstance(&CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER, &IID_ICreateDevEnum, (void**)&pSysDevEnum);
if(FAILED(hr)) {
printf("CoCreateInstance failed()\n");
}
// Obtain a class enumerator for the video compressor category.
IEnumMoniker *pEnumCat = NULL;
hr = pSysDevEnum->lpVtbl->CreateClassEnumerator(pSysDevEnum, &CLSID_VideoInputDeviceCategory, &pEnumCat, 0);
if(hr != S_OK) {
pSysDevEnum->lpVtbl->Release(pSysDevEnum);
printf("CreateClassEnumerator failed()\n");
}
IMoniker *pMoniker = NULL;
ULONG cFetched;
while(pEnumCat->lpVtbl->Next(pEnumCat, 1, &pMoniker, &cFetched) == S_OK && i <= MAX_DEVICES) {
IPropertyBag *pPropBag;
hr = pMoniker->lpVtbl->BindToStorage(pMoniker, 0, 0, &IID_IPropertyBag, (void **)&pPropBag);
if(SUCCEEDED(hr)) {
// To retrieve the filter's friendly name, do the following:
VARIANT varName;
VariantInit(&varName);
hr = pPropBag->lpVtbl->Read(pPropBag, L"FriendlyName", &varName, 0);
if (SUCCEEDED(hr)) {
if(varName.vt == VT_BSTR) {
//printf("friendly name: %ls\n", varName.bstrVal);
int name_length = wcslen(varName.bstrVal);
char* name = (char*)malloc(name_length + 1);
wcstombs(name, varName.bstrVal, name_length + 1);
device_names[i] = name;
//free(name);
} else {
//printf("unfriendly name\n");
device_names[i] = "Unknown Device";
}
++i;
}
VariantClear(&varName);
pPropBag->lpVtbl->Release(pPropBag);
}
pMoniker->lpVtbl->Release(pMoniker);
}
amt_cameras = i-1;
pEnumCat->lpVtbl->Release(pEnumCat);
pSysDevEnum->lpVtbl->Release(pSysDevEnum);
#endif /* __WIN32 */
// TODO: Windows video capture enumeration
// Obtain user camera selection
int select_camera = -1;
while(select_camera < 0 || select_camera > amt_cameras || select_camera >= MAX_DEVICES) {
printf("Select a camera from %d cameras...\n", amt_cameras+1);
int i = 0;
// Print all collected devices
while(i <= amt_cameras)
{
printf("%d: %s\n", i, device_names[i]);
++i;
}
printf("\nCamera #:");
scanf(" %d", &select_camera);
}
printf("\nPress spacebar to exit.\n\n");
// Initialize window
cvNamedWindow("Camera", 1);
// Initialize camera
CvCapture* capture = cvCreateCameraCapture(select_camera);
char key = 0;
// Run until spacebar is pressed
while(key != 32 && capture != NULL) {
// Obtains frame from camera and show it on window
IplImage* frame = cvQueryFrame(capture);
cvShowImage("Camera", frame);
key = cvWaitKey(10);
}
// Free device list allocations
i = 0;
while(i <= amt_cameras)
{
free(device_names[i]);
++i;
}
// Collapse camera and window
cvReleaseCapture(&capture);
cvDestroyWindow("Camera");
return 0;
}

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@ -23,7 +23,7 @@
#include "toxic.h"
#include "windows.h"
#include "audio_call.h"
#include "device.h"
#include "audio_device.h"
#include "chat_commands.h"
#include "global_commands.h"
#include "line_info.h"
@ -69,7 +69,7 @@ static int set_call(Call* call, bool start)
else {
call->ttid = 0;
if (pthread_mutex_destroy(&call->mutex) != 0)
return -1;
return -1;
}
return 0;

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@ -25,7 +25,7 @@
#include <tox/toxav.h>
#include "device.h"
#include "audio_device.h"
typedef enum _AudioError {
ae_None = 0,

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@ -1,4 +1,4 @@
/* device.c
/* audio_device.c
*
*
* Copyright (C) 2014 Toxic All Rights Reserved.
@ -20,7 +20,7 @@
*
*/
#include "device.h"
#include "audio_device.h"
#ifdef AUDIO
#include "audio_call.h"

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@ -1,4 +1,4 @@
/* device.h
/* audio_device.h
*
*
* Copyright (C) 2014 Toxic All Rights Reserved.
@ -26,8 +26,8 @@
* Read from running input device(s) via select()/callback combo.
*/
#ifndef DEVICE_H
#define DEVICE_H
#ifndef AUDIO_DEVICE_H
#define AUDIO_DEVICE_H
#define OPENAL_BUFS 5
#define MAX_DEVICES 32
@ -88,4 +88,4 @@ void print_devices(ToxWindow* self, DeviceType type);
void get_primary_device_name(DeviceType type, char *buf, int size);
DeviceError selection_valid(DeviceType type, int32_t selection);
#endif /* DEVICE_H */
#endif /* AUDIO_DEVICE_H */

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@ -101,6 +101,12 @@ static const char chat_cmd_list[AC_NUM_CHAT_COMMANDS][MAX_CMDNAME_SIZE] = {
{ "/mute" },
{ "/sense" },
#ifdef VIDEO
{ "/enablevid" },
{ "/disablevid" },
#endif /* VIDEO */
#endif /* AUDIO */
};

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@ -41,6 +41,10 @@ void cmd_cancel(WINDOW *, ToxWindow *, Tox *, int argc, char (*argv)[MAX_STR_SIZ
void cmd_ccur_device(WINDOW *, ToxWindow *, Tox *, int argc, char (*argv)[MAX_STR_SIZE]);
void cmd_mute(WINDOW *, ToxWindow *, Tox *, int argc, char (*argv)[MAX_STR_SIZE]);
void cmd_sense(WINDOW *, ToxWindow *, Tox *, int argc, char (*argv)[MAX_STR_SIZE]);
#ifdef VIDEO
void cmd_enablevid(WINDOW *, ToxWindow *, Tox *, int argc, char (*argv)[MAX_STR_SIZE]);
void cmd_disablevid(WINDOW *, ToxWindow *, Tox *, int argc, char (*argv)[MAX_STR_SIZE]);
#endif /* VIDEO */
#endif /* AUDIO */
#endif /* #define CHAT_COMMANDS_H */

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@ -77,6 +77,10 @@ static struct cmd_func chat_commands[] = {
{ "/hangup", cmd_hangup },
{ "/mute", cmd_mute },
{ "/sense", cmd_sense },
#ifdef VIDEO
{ "/enablevid", cmd_enablevid },
{ "/disablevid",cmd_disablevid },
#endif /* VIDEO */
#endif /* AUDIO */
{ NULL, NULL },
};

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@ -59,7 +59,7 @@
#include "help.h"
#include "notify.h"
#include "autocomplete.h"
#include "device.h"
#include "audio_device.h"
extern char *DATA_FILE;

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@ -31,7 +31,7 @@
#include <sys/stat.h>
#include "notify.h"
#include "device.h"
#include "audio_device.h"
#include "settings.h"
#include "line_info.h"
#include "misc_tools.h"

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@ -32,7 +32,7 @@
#include "misc_tools.h"
#ifdef AUDIO
#include "device.h"
#include "audio_device.h"
#endif /* AUDIO */
#include "settings.h"

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@ -54,7 +54,8 @@
#include "settings.h"
#include "log.h"
#include "notify.h"
#include "device.h"
#include "audio_device.h"
#include "video_device.h"
#include "message_queue.h"
#include "execute.h"
#include "term_mplex.h"
@ -65,6 +66,9 @@
#ifdef AUDIO
#include "audio_call.h"
#ifdef VIDEO
#include "video_call.h"
#endif /* VIDEO */
ToxAv *av;
#endif /* AUDIO */
@ -131,6 +135,10 @@ void exit_toxic_success(Tox *m)
terminate_audio();
#endif /* AUDIO */
#ifdef VIDEO
terminate_video();
#endif /* VIDEO */
free(DATA_FILE);
free(BLOCK_FILE);
free(user_settings);
@ -1131,6 +1139,11 @@ int main(int argc, char *argv[])
#ifdef AUDIO
av = init_audio(prompt, m);
#ifdef VIDEO
av = init_video(prompt, m, av);
#endif /* VIDEO*/
/* audio thread */
if (pthread_create(&audio_thread.tid, NULL, thread_audio, (void *) av) != 0)

119
src/video_call.c Normal file
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@ -0,0 +1,119 @@
/* video_call.c
*
*
* 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/>.
*
*/
#include "toxic.h"
#include "windows.h"
#include "video_call.h"
#include "video_device.h"
#include "chat_commands.h"
#include "global_commands.h"
#include "line_info.h"
#include "notify.h"
#include <stdbool.h>
#include <curses.h>
#include <string.h>
#include <pthread.h>
#include <unistd.h>
#include <stdlib.h>
#include <assert.h>
#define cbend pthread_exit(NULL)
#define MAX_CALLS 10
struct VSettings {
VideoError errors;
ToxAv *av;
ToxAvCSettings cs;
Call calls[MAX_CALLS];
} VSettins;
ToxAv *init_video(ToxWindow *self, Tox *tox, ToxAv *av)
{
VSettins.cs = av_DefaultSettings;
VSettins.cs.max_video_height = 1024;
VSettins.cs.max_video_width = 1024;
VSettins.errors = ve_None;
VSettins.av = av;
memset(VSettins.calls, 0, sizeof(VSettins.calls));
if( !VSettins.av ) {
//line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "New toxav instance");
VSettins.av = toxav_new(tox, MAX_CALLS);
}
if ( !VSettins.av ) {
VSettins.errors |= ve_StartingCoreVideo;
return NULL;
}
if ( init_video_devices(VSettins.av) == vde_InternalError ) {
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Failed to init video devices");
//toxav_kill(VSettins.av);
return VSettins.av = NULL;
}
return VSettins.av;
}
void terminate_video()
{
int i;
for (i = 0; i < MAX_CALLS; ++i)
stop_video_transmission(&VSettins.calls[i], i);
terminate_video_devices();
}
int start_video_transmission(ToxWindow *self, Call *call)
{
return 0;
}
int stop_video_transmission(Call *call, int call_index)
{
return 0;
}
/*
* Commands from chat_commands.h
*/
void cmd_enablevid(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX_STR_SIZE])
{
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Video Enabled");
return;
}
void cmd_disablevid(WINDOW *window, ToxWindow *self, Tox *m, int argc, char (*argv)[MAX_STR_SIZE])
{
line_info_add(self, NULL, NULL, NULL, SYS_MSG, 0, 0, "Video Disabled");
return;
}

45
src/video_call.h Normal file
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@ -0,0 +1,45 @@
/* 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_H
#define VIDEO_H
#include <tox/toxav.h>
#include "audio_call.h"
#include "video_device.h"
typedef enum _VideoError {
ve_None = 0,
ve_StartingCaptureDevice = 1 << 0,
ve_StartingOutputDevice = 1 << 1,
ve_StartingCoreVideo = 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, ToxAv *av);
void terminate_video();
int start_video_transmission(ToxWindow *self, Call *call);
int stop_video_transmission(Call *call, int call_index);
void stop_current_video_call(ToxWindow *self);
#endif /* VIDEO_H */

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src/video_device.c Normal file
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@ -0,0 +1,326 @@
/* video_device.c
*
*
* 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/>.
*
*/
#include "video_device.h"
#ifdef VIDEO
#include "video_call.h"
#endif
#include "line_info.h"
#include "settings.h"
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <vpx/vpx_image.h>
#ifdef __linux__
#include <unistd.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/videodev2.h>
#endif /* __linux __ */
#ifdef __WIN32
#include <windows.h>
#include <dshow.h>
#pragma comment(lib, "strmiids.lib")
#endif /* __WIN32 */
#include <stdbool.h>
#include <string.h>
#include <pthread.h>
#include <unistd.h>
#include <stdlib.h>
#include <assert.h>
#define inline__ inline __attribute__((always_inline))
extern struct user_settings *user_settings;
typedef struct VideoDevice {
CvCapture* dhndl;
char* window;
IplImage* frame;
int32_t call_idx;
uint32_t ref_count;
int32_t selection;
pthread_mutex_t mutex[1];
uint16_t frame_width;
uint16_t frame_height;
} VideoDevice;
const char *default_video_device_names[2];
const char *video_device_names[2][MAX_DEVICES];
static int video_device_size[2];
VideoDevice *video_device_running[2][MAX_DEVICES] = {{NULL}};
uint32_t primary_video_device[2];
#ifdef VIDEO
static ToxAv* av = NULL;
#endif /* VIDEO */
pthread_mutex_t video_mutex;
bool video_thread_running = true,
video_thread_paused = true;
void* video_thread_poll(void*);
/* Meet devices */
#ifdef VIDEO
VideoDeviceError init_video_devices(ToxAv* av_)
#else
VideoDeviceError init_video_devices()
#endif /* AUDIO */
{
video_device_size[input] = 0;
uint32_t i;
#ifdef __linux__
/* Enumerate video capture devices using v4l */
for(i = 0; i <= MAX_DEVICES; ++i)
{
int fd;
struct v4l2_capability video_cap;
char device_address[256];
snprintf(device_address, sizeof device_address, "/dev/video%d",i);
if((fd = open(device_address, O_RDONLY)) == -1) {
break;
}
else {
// Query capture device information
if(ioctl(fd, VIDIOC_QUERYCAP, &video_cap) == -1)
perror("cam_info: Can't get capabilities");
else {
int name_length = sizeof(video_cap.card);
char* name = (char*)malloc(name_length+1);
name = video_cap.card;
video_device_names[input][i] = name;
}
close(fd);
video_device_size[input] = i;
}
}
#endif /* __linux__ */
#ifdef __WIN32
/* Enumerate video capture devices using win32 api */
HRESULT hr;
CoInitialize(NULL);
ICreateDevEnum *pSysDevEnum = NULL;
hr = CoCreateInstance(&CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER, &IID_ICreateDevEnum, (void**)&pSysDevEnum);
if(FAILED(hr)) {
printf("CoCreateInstance failed()\n");
}
// Obtain a class enumerator for the video compressor category.
IEnumMoniker *pEnumCat = NULL;
hr = pSysDevEnum->lpVtbl->CreateClassEnumerator(pSysDevEnum, &CLSID_VideoInputDeviceCategory, &pEnumCat, 0);
if(hr != S_OK) {
pSysDevEnum->lpVtbl->Release(pSysDevEnum);
printf("CreateClassEnumerator failed()\n");
}
IMoniker *pMoniker = NULL;
ULONG cFetched;
i = 0;
while( pEnumCat->lpVtbl->Next(pEnumCat, 1, &pMoniker, &cFetched) == S_OK && i <= MAX_DEVICES ) {
IPropertyBag *pPropBag;
hr = pMoniker->lpVtbl->BindToStorage(pMoniker, 0, 0, &IID_IPropertyBag, (void **)&pPropBag);
if(SUCCEEDED(hr)) {
/* To retrieve the filter's friendly name, do the following: */
VARIANT varName;
VariantInit(&varName);
hr = pPropBag->lpVtbl->Read(pPropBag, L"FriendlyName", &varName, 0);
if (SUCCEEDED(hr)) {
if(varName.vt == VT_BSTR) {
int name_length = wcslen(varName.bstrVal);
char* name = (char*)malloc(name_length + 1);
wcstombs(name, varName.bstrVal, name_length + 1);
video_device_names[input][i] = name;
} else {
video_device_names[input][i] = "Unknown Device";
}
++i;
}
VariantClear(&varName);
pPropBag->lpVtbl->Release(pPropBag);
}
pMoniker->lpVtbl->Release(pMoniker);
}
video_device_size[input] = i-1;
pEnumCat->lpVtbl->Release(pEnumCat);
pSysDevEnum->lpVtbl->Release(pSysDevEnum);
#endif /* __WIN32 */
/* Start poll thread */
if (pthread_mutex_init(&video_mutex, NULL) != 0)
return vde_InternalError;
pthread_t thread_id;
if ( pthread_create(&thread_id, NULL, video_thread_poll, NULL) != 0 || pthread_detach(thread_id) != 0)
return vde_InternalError;
#ifdef VIDEO
av = av_;
#endif /* VIDEO */
return (VideoDeviceError) vde_None;
}
VideoDeviceError terminate_video_devices()
{
/* Cleanup if needed */
video_thread_running = false;
usleep(20000);
if (pthread_mutex_destroy(&video_mutex) != 0)
return (VideoDeviceError) vde_InternalError;
return (VideoDeviceError) vde_None;
}
void* video_thread_poll(void* arg)
{
(void)arg;
uint32_t i;
while(video_thread_running)
{
if (video_thread_paused) usleep(10000); /* Wait for unpause. */
else
{
for (i = 0; i < video_device_size[input]; ++i)
{
pthread_mutex_lock(&video_mutex);
if (video_device_running[input][i] != NULL)
{
/* Capture video frame data of input device */
video_device_running[input][i]->frame = cvQueryFrame(video_device_running[input][i]->dhndl);
}
pthread_mutex_unlock(&video_mutex);
}
usleep(5000);
}
}
pthread_exit(NULL);
}
VideoDeviceError set_primary_video_device(DeviceType type, int32_t selection)
{
if (video_device_size[type] <= selection || selection < 0) return (VideoDeviceError) vde_InvalidSelection;
primary_video_device[type] = selection;
return (VideoDeviceError) vde_None;
}
VideoDeviceError open_video_device(DeviceType type, int32_t selection, uint32_t* device_idx)
{
if (video_device_size[type] <= selection || selection < 0) return vde_InvalidSelection;
pthread_mutex_lock(&video_mutex);
uint32_t i;
for (i = 0; i < MAX_DEVICES; ++i) { /* Check if any device has the same selection */
if ( video_device_running[type][i] && video_device_running[type][i]->selection == selection ) {
video_device_running[type][*device_idx] = video_device_running[type][i];
video_device_running[type][i]->ref_count++;
pthread_mutex_unlock(&video_mutex);
return vde_None;
}
}
VideoDevice* device = video_device_running[type][*device_idx] = calloc(1, sizeof(VideoDevice));
device->selection = selection;
if (pthread_mutex_init(device->mutex, NULL) != 0) {
free(device);
pthread_mutex_unlock(&video_mutex);
return vde_InternalError;
}
if (type == input) {
device->window = video_device_names[input][selection];
cvNamedWindow(device->window, 1);
device->dhndl = cvCreateCameraCapture(selection);
}
else {
device->dhndl = NULL;
device->window = video_device_names[output][selection];
if ( device->dhndl || !device->window ) {
free(device);
video_device_running[type][*device_idx] = NULL;
pthread_mutex_unlock(&video_mutex);
return vde_FailedStart;
}
cvNamedWindow(device->window,1);
}
if (type == input) {
video_thread_paused = false;
}
pthread_mutex_unlock(&video_mutex);
return vde_None;
}
VideoDeviceError close_video_device(DeviceType type, uint32_t device_idx)
{
if (device_idx >= MAX_DEVICES) return vde_InvalidSelection;
pthread_mutex_lock(&video_mutex);
VideoDevice* device = video_device_running[type][device_idx];
VideoDeviceError rc = de_None;
if (!device) {
pthread_mutex_unlock(&video_mutex);
return vde_DeviceNotActive;
}
video_device_running[type][device_idx] = NULL;
if ( !device->ref_count ) {
if (type == input) {
cvReleaseCapture(&device->dhndl);
cvDestroyWindow(device->window);
}
else {
cvDestroyWindow(device->window);
}
free(device);
}
else device->ref_count--;
pthread_mutex_unlock(&video_mutex);
return rc;
}

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src/video_device.h Normal file
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/* video_device.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/>.
*
*/
/*
* You can have multiple sources (Input devices) but only one output device.
* Pass buffers to output device via write();
* Read from running input device(s) via select()/callback combo.
*/
#ifndef VIDEO_DEVICE_H
#define VIDEO_DEVICE_H
#define MAX_DEVICES 32
#include <inttypes.h>
#include "windows.h"
#include "audio_device.h"
typedef enum VideoDeviceError {
vde_None,
vde_InternalError = -1,
vde_InvalidSelection = -2,
vde_FailedStart = -3,
vde_Busy = -4,
vde_AllDevicesBusy = -5,
vde_DeviceNotActive = -6,
vde_BufferError = -7,
vde_UnsupportedMode = -8,
vde_OpenCVError = -9,
} VideoDeviceError;
#ifdef VIDEO
VideoDeviceError init_video_devices(ToxAv* av);
#else
VideoDeviceError init_video_devices();
#endif /* VIDEO */
VideoDeviceError terminate_video_devices();
VideoDeviceError set_primary_video_device(DeviceType type, int32_t selection);
VideoDeviceError open_primary_video_device(DeviceType type);
/* Start device */
VideoDeviceError open_video_device(DeviceType type, int32_t selection, uint32_t* device_idx);
/* Stop device */
VideoDeviceError close_video_device(DeviceType type, uint32_t device_idx);
#endif /* VIDEO_DEVICE_H */