static int dshow_read_header(AVFormatContext *avctx)
{
struct dshow_ctx *ctx = avctx->priv_data;
IGraphBuilder *graph = NULL;
ICreateDevEnum *devenum = NULL;
IMediaControl *control = NULL;
int ret = AVERROR(EIO);
int r;
if (!ctx->list_devices && !parse_device_name(avctx)) {
av_log(avctx, AV_LOG_ERROR, "Malformed dshow input string.\n");
goto error;
}
ctx->video_codec_id = avctx->video_codec_id ? avctx->video_codec_id
: AV_CODEC_ID_RAWVIDEO;
if (ctx->pixel_format != AV_PIX_FMT_NONE) {
if (ctx->video_codec_id != AV_CODEC_ID_RAWVIDEO) {
av_log(avctx, AV_LOG_ERROR, "Pixel format may only be set when "
"video codec is not set or set to rawvideo\n");
ret = AVERROR(EINVAL);
goto error;
}
}
if (ctx->framerate) {
r = av_parse_video_rate(&ctx->requested_framerate, ctx->framerate);
if (r < 0) {
av_log(avctx, AV_LOG_ERROR, "Could not parse framerate '%s'.\n", ctx->framerate);
goto error;
}
}
CoInitialize(0);
r = CoCreateInstance(&CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER,
&IID_IGraphBuilder, (void **) &graph);
if (r != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not create capture graph.\n");
goto error;
}
ctx->graph = graph;
r = CoCreateInstance(&CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER,
&IID_ICreateDevEnum, (void **) &devenum);
if (r != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not enumerate system devices.\n");
goto error;
}
if (ctx->list_devices) {
av_log(avctx, AV_LOG_INFO, "DirectShow video devices\n");
dshow_cycle_devices(avctx, devenum, VideoDevice, NULL);
av_log(avctx, AV_LOG_INFO, "DirectShow audio devices\n");
dshow_cycle_devices(avctx, devenum, AudioDevice, NULL);
ret = AVERROR_EXIT;
goto error;
}
if (ctx->list_options) {
if (ctx->device_name[VideoDevice])
dshow_list_device_options(avctx, devenum, VideoDevice);
if (ctx->device_name[AudioDevice])
dshow_list_device_options(avctx, devenum, AudioDevice);
ret = AVERROR_EXIT;
goto error;
}
if (ctx->device_name[VideoDevice]) {
if ((r = dshow_open_device(avctx, devenum, VideoDevice)) < 0 ||
(r = dshow_add_device(avctx, VideoDevice)) < 0) {
ret = r;
goto error;
}
}
if (ctx->device_name[AudioDevice]) {
if ((r = dshow_open_device(avctx, devenum, AudioDevice)) < 0 ||
(r = dshow_add_device(avctx, AudioDevice)) < 0) {
ret = r;
goto error;
}
}
ctx->mutex = CreateMutex(NULL, 0, NULL);
if (!ctx->mutex) {
av_log(avctx, AV_LOG_ERROR, "Could not create Mutex\n");
goto error;
}
ctx->event = CreateEvent(NULL, 1, 0, NULL);
if (!ctx->event) {
av_log(avctx, AV_LOG_ERROR, "Could not create Event\n");
goto error;
}
r = IGraphBuilder_QueryInterface(graph, &IID_IMediaControl, (void **) &control);
if (r != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not get media control.\n");
goto error;
}
ctx->control = control;
r = IMediaControl_Run(control);
if (r == S_FALSE) {
OAFilterState pfs;
r = IMediaControl_GetState(control, 0, &pfs);
}
if (r != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not run filter\n");
goto error;
}
ret = 0;
error:
if (ret < 0)
dshow_read_close(avctx);
if (devenum)
ICreateDevEnum_Release(devenum);
return ret;
}
static int dshow_read_header(AVFormatContext *avctx)
{
struct dshow_ctx *ctx = avctx->priv_data;
IGraphBuilder *graph = NULL;
ICreateDevEnum *devenum = NULL;
IMediaControl *control = NULL;
IMediaEvent *media_event = NULL;
HANDLE media_event_handle;
HANDLE proc;
int ret = AVERROR(EIO);
int r;
CoInitialize(0);
if (!ctx->list_devices && !parse_device_name(avctx)) {
av_log(avctx, AV_LOG_ERROR, "Malformed dshow input string.\n");
goto error;
}
ctx->video_codec_id = avctx->video_codec_id ? avctx->video_codec_id
: AV_CODEC_ID_RAWVIDEO;
if (ctx->pixel_format != AV_PIX_FMT_NONE) {
if (ctx->video_codec_id != AV_CODEC_ID_RAWVIDEO) {
av_log(avctx, AV_LOG_ERROR, "Pixel format may only be set when "
"video codec is not set or set to rawvideo\n");
ret = AVERROR(EINVAL);
goto error;
}
}
if (ctx->framerate) {
r = av_parse_video_rate(&ctx->requested_framerate, ctx->framerate);
if (r < 0) {
av_log(avctx, AV_LOG_ERROR, "Could not parse framerate '%s'.\n", ctx->framerate);
goto error;
}
}
r = CoCreateInstance(&CLSID_FilterGraph, NULL, CLSCTX_INPROC_SERVER,
&IID_IGraphBuilder, (void **) &graph);
if (r != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not create capture graph.\n");
goto error;
}
ctx->graph = graph;
r = CoCreateInstance(&CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER,
&IID_ICreateDevEnum, (void **) &devenum);
if (r != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not enumerate system devices.\n");
goto error;
}
if (ctx->list_devices) {
av_log(avctx, AV_LOG_INFO, "DirectShow video devices (some may be both video and audio devices)\n");
dshow_cycle_devices(avctx, devenum, VideoDevice, VideoSourceDevice, NULL);
av_log(avctx, AV_LOG_INFO, "DirectShow audio devices\n");
dshow_cycle_devices(avctx, devenum, AudioDevice, AudioSourceDevice, NULL);
ret = AVERROR_EXIT;
goto error;
}
if (ctx->list_options) {
if (ctx->device_name[VideoDevice])
if ((r = dshow_list_device_options(avctx, devenum, VideoDevice, VideoSourceDevice))) {
ret = r;
goto error;
}
if (ctx->device_name[AudioDevice]) {
if (dshow_list_device_options(avctx, devenum, AudioDevice, AudioSourceDevice)) {
/* show audio options from combined video+audio sources as fallback */
if ((r = dshow_list_device_options(avctx, devenum, AudioDevice, VideoSourceDevice))) {
ret = r;
goto error;
}
}
}
}
if (ctx->device_name[VideoDevice]) {
if ((r = dshow_open_device(avctx, devenum, VideoDevice, VideoSourceDevice)) < 0 ||
(r = dshow_add_device(avctx, VideoDevice)) < 0) {
ret = r;
goto error;
}
}
if (ctx->device_name[AudioDevice]) {
if ((r = dshow_open_device(avctx, devenum, AudioDevice, AudioSourceDevice)) < 0 ||
(r = dshow_add_device(avctx, AudioDevice)) < 0) {
av_log(avctx, AV_LOG_INFO, "Searching for audio device within video devices for %s\n", ctx->device_name[AudioDevice]);
/* see if there's a video source with an audio pin with the given audio name */
if ((r = dshow_open_device(avctx, devenum, AudioDevice, VideoSourceDevice)) < 0 ||
(r = dshow_add_device(avctx, AudioDevice)) < 0) {
ret = r;
goto error;
}
}
}
if (ctx->list_options) {
/* allow it to list crossbar options in dshow_open_device */
ret = AVERROR_EXIT;
goto error;
}
ctx->curbufsize[0] = 0;
ctx->curbufsize[1] = 0;
ctx->mutex = CreateMutex(NULL, 0, NULL);
if (!ctx->mutex) {
av_log(avctx, AV_LOG_ERROR, "Could not create Mutex\n");
goto error;
}
ctx->event[1] = CreateEvent(NULL, 1, 0, NULL);
if (!ctx->event[1]) {
av_log(avctx, AV_LOG_ERROR, "Could not create Event\n");
goto error;
}
r = IGraphBuilder_QueryInterface(graph, &IID_IMediaControl, (void **) &control);
if (r != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not get media control.\n");
goto error;
}
ctx->control = control;
r = IGraphBuilder_QueryInterface(graph, &IID_IMediaEvent, (void **) &media_event);
if (r != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not get media event.\n");
goto error;
}
ctx->media_event = media_event;
r = IMediaEvent_GetEventHandle(media_event, (void *) &media_event_handle);
if (r != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not get media event handle.\n");
goto error;
}
proc = GetCurrentProcess();
r = DuplicateHandle(proc, media_event_handle, proc, &ctx->event[0],
0, 0, DUPLICATE_SAME_ACCESS);
if (!r) {
av_log(avctx, AV_LOG_ERROR, "Could not duplicate media event handle.\n");
goto error;
}
r = IMediaControl_Run(control);
if (r == S_FALSE) {
OAFilterState pfs;
r = IMediaControl_GetState(control, 0, &pfs);
}
if (r != S_OK) {
av_log(avctx, AV_LOG_ERROR, "Could not run graph (sometimes caused by a device already in use by other application)\n");
goto error;
}
ret = 0;
error:
if (devenum)
ICreateDevEnum_Release(devenum);
if (ret < 0)
dshow_read_close(avctx);
return ret;
}
static int android_read_header(AVFormatContext *avctx)
{
int ret = AVERROR(EIO);
int android_pix_fmt,android_sample_fmt;
struct android_camera_ctx * ctx;
ctx = avctx->priv_data;
debug = ctx->debug;
if (!ctx->list_devices && !parse_device_name(avctx)) {
av_log(avctx, AV_LOG_ERROR, "Malformed android_camera input string.\n");
return ret;
}
ctx->video_codec_id = avctx->video_codec_id ? avctx->video_codec_id
: AV_CODEC_ID_RAWVIDEO;
/*
* 如果有点格式但是不等于AV_CODEC_ID_RAWVIDEO返回错误
*/
if (ctx->pixel_format != AV_PIX_FMT_NONE) {
if (ctx->video_codec_id != AV_CODEC_ID_RAWVIDEO) {
av_log(avctx, AV_LOG_ERROR, "Pixel format may only be set when "
"video codec is not set or set to rawvideo\n");
ret = AVERROR(EINVAL);
return ret;
}
}
if (ctx->framerate) {
ret = av_parse_video_rate(&ctx->requested_framerate, ctx->framerate);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "Could not parse framerate '%s'.\n", ctx->framerate);
return ret;
}
}
/*
* 枚举设备
*/
if (ctx->list_devices) {
av_log(avctx, AV_LOG_INFO, "Android camera devices (some may be both video and audio devices)\n");
android_cycle_devices(avctx, VideoDevice);
av_log(avctx, AV_LOG_INFO, "Android audio devices\n");
android_cycle_devices(avctx, AudioDevice);
ret = AVERROR_EXIT;
return ret;
}
/*
* 枚举设备参数
*/
if (ctx->list_options) {
if (ctx->device_name[VideoDevice])
if ((ret = android_list_device_options(avctx, VideoDevice))) {
return ret;
}
if (ctx->device_name[AudioDevice]) {
if (android_list_device_options(avctx, AudioDevice)) {
/* show audio options from combined video+audio sources as fallback */
if ((ret = android_list_device_options(avctx, AudioDevice))) {
return ret;
}
}
}
ret = AVERROR_EXIT;
return ret;
}
/*
* 打开android摄像头设备和录音设备
*/
int iDevice = parse_device_id(ctx->device_name[VideoDevice]);
if(iDevice>=0) {
android_setDemuxerCallback(android_grab_buffer);
DEBUG("android_read_header android_openDemuxer:oes=%d,dev=%d,w=%d,h=%d,pixfmt=%d,fps=%d,ch=%d,bits=%d,rate=%d",
ctx->oes_texture, iDevice, ctx->requested_width,
ctx->requested_height,
ctx->pixel_format, av_q2d(ctx->requested_framerate),
ctx->channels, 16, ctx->sample_rate);
android_pix_fmt = android_pixfmt2av(ctx->pixel_format);
android_sample_fmt = 16;
int result = android_openDemuxer(ctx->oes_texture, iDevice, ctx->requested_width,
ctx->requested_height,
android_pix_fmt, av_q2d(ctx->requested_framerate),
ctx->channels, android_sample_fmt, ctx->sample_rate);
if(result){
av_log(avctx, AV_LOG_ERROR, "android_openDemuxer return %d\n",result);
return ret;
}
if( ctx->oes_texture >= -1 ) {
ret = add_device(avctx, VideoDevice);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "add_device VideoDevice return %d\n", ret);
return ret;
}
}
if( ctx->channels > 0 ) {
ret = add_device(avctx, AudioDevice);
if (ret < 0) {
av_log(avctx, AV_LOG_ERROR, "add_device AudioDevice return %d\n", ret);
return ret;
}
}
if(pthread_mutex_init(&ctx->mutex,NULL)){
av_log(avctx, AV_LOG_ERROR, "pthread_mutex_init non-zero");
return ret;
}
if(pthread_cond_init(&ctx->cond,NULL)){
av_log(avctx, AV_LOG_ERROR, "pthread_cond_init non-zero");
return ret;
}
/*
* 一次只能打开一个俘获android设备
*/
_avctx = avctx;
ctx->bufsize = 0;
ret = 0;
}else{
av_log(avctx, AV_LOG_ERROR, "android_read_header videoDevice = %s\n",ctx->device_name[VideoDevice]);
}
DEBUG("android_read_header return %d",ret);
return ret;
}
