bool ofGstVideoPlayer::allocate(int bpp){
if(bIsAllocated) return true;
guint64 durationNanos = videoUtils.getDurationNanos();
nFrames = 0;
if(GstPad* pad = gst_element_get_static_pad(videoUtils.getSink(), "sink")){
#if GST_VERSION_MAJOR==0
int width,height;
if(gst_video_get_size(GST_PAD(pad), &width, &height)){
if(!videoUtils.allocate(width,height,bpp)) return false;
}else{
ofLogError("ofGstVideoPlayer") << "allocate(): couldn't query width and height";
return false;
}
const GValue *framerate = gst_video_frame_rate(pad);
fps_n=0;
fps_d=0;
if(framerate && GST_VALUE_HOLDS_FRACTION (framerate)){
fps_n = gst_value_get_fraction_numerator (framerate);
fps_d = gst_value_get_fraction_denominator (framerate);
nFrames = (float)(durationNanos / (float)GST_SECOND) * (float)fps_n/(float)fps_d;
ofLogVerbose("ofGstVideoPlayer") << "allocate(): framerate: " << fps_n << "/" << fps_d;
}else{
ofLogWarning("ofGstVideoPlayer") << "allocate(): cannot get framerate, frame seek won't work";
}
bIsAllocated = true;
#else
if(GstCaps *caps = gst_pad_get_current_caps (GST_PAD (pad))){
GstVideoInfo info;
gst_video_info_init (&info);
if (gst_video_info_from_caps (&info, caps)){
if(!videoUtils.allocate(info.width,info.height,bpp)) return false;
}else{
ofLogError("ofGstVideoPlayer") << "allocate(): couldn't query width and height";
return false;
}
fps_n = info.fps_n;
fps_d = info.fps_d;
nFrames = (float)(durationNanos / (float)GST_SECOND) * (float)fps_n/(float)fps_d;
gst_caps_unref(caps);
bIsAllocated = true;
}else{
ofLogError("ofGstVideoPlayer") << "allocate(): cannot get pipeline caps";
bIsAllocated = false;
}
#endif
gst_object_unref(GST_OBJECT(pad));
}else{
ofLogError("ofGstVideoPlayer") << "allocate(): cannot get sink pad";
bIsAllocated = false;
}
return bIsAllocated;
}
void GStreamerWrapper::retrieveVideoInfo()
{
////////////////////////////////////////////////////////////////////////// Media Duration
// Nanoseconds
GstFormat gstFormat = GST_FORMAT_TIME;
gst_element_query_duration( GST_ELEMENT( m_GstPipeline ), &gstFormat, &m_iDurationInNs );
// Milliseconds
m_dDurationInMs = GST_TIME_AS_MSECONDS( m_iDurationInNs );
////////////////////////////////////////////////////////////////////////// Stream Info
// Number of Video Streams
g_object_get( m_GstPipeline, "n-video", &m_iNumVideoStreams, NULL );
// Number of Audio Streams
g_object_get( m_GstPipeline, "n-audio", &m_iNumAudioStreams, NULL );
// Set Content Type according to the number of available Video and Audio streams
if ( m_iNumVideoStreams > 0 && m_iNumAudioStreams > 0 )
m_ContentType = VIDEO_AND_AUDIO;
else if ( m_iNumVideoStreams > 0 )
m_ContentType = VIDEO;
else if ( m_iNumAudioStreams > 0 )
m_ContentType = AUDIO;
////////////////////////////////////////////////////////////////////////// Video Data
if ( m_iNumVideoStreams > 0 )
{
GstPad* gstPad = gst_element_get_static_pad( m_GstVideoSink, "sink" );
if ( gstPad )
{
// Video Size
gst_video_get_size( GST_PAD( gstPad ), &m_iWidth, &m_iHeight );
// Frame Rate
const GValue* framerate = gst_video_frame_rate( gstPad );
int iFpsNumerator = gst_value_get_fraction_numerator( framerate );
int iFpsDenominator = gst_value_get_fraction_denominator( framerate );
// Number of frames
m_iNumberOfFrames = (float)( m_iDurationInNs / GST_SECOND ) * (float)iFpsNumerator / (float)iFpsDenominator;
// FPS
m_fFps = (float)iFpsNumerator / (float)iFpsDenominator;
gst_object_unref( gstPad );
}
}
}
bool ofGstVideoPlayer::allocate(int bpp){
if(bIsAllocated) return true;
guint64 durationNanos = videoUtils.getDurationNanos();
nFrames = 0;
if(GstPad* pad = gst_element_get_static_pad(videoUtils.getSink(), "sink")){
int width,height;
if(gst_video_get_size(GST_PAD(pad), &width, &height)){
if(!videoUtils.allocate(width,height,bpp)) return false;
}else{
ofLog(OF_LOG_ERROR,"GStreamer: cannot query width and height");
return false;
}
const GValue *framerate;
framerate = gst_video_frame_rate(pad);
fps_n=0;
fps_d=0;
if(framerate && GST_VALUE_HOLDS_FRACTION (framerate)){
fps_n = gst_value_get_fraction_numerator (framerate);
fps_d = gst_value_get_fraction_denominator (framerate);
nFrames = (float)(durationNanos / GST_SECOND) * (float)fps_n/(float)fps_d;
ofLog(OF_LOG_VERBOSE,"ofGstUtils: framerate: %i/%i",fps_n,fps_d);
}else{
ofLog(OF_LOG_WARNING,"Gstreamer: cannot get framerate, frame seek won't work");
}
gst_object_unref(GST_OBJECT(pad));
bIsAllocated = true;
}else{
ofLog(OF_LOG_ERROR,"GStreamer: cannot get sink pad");
bIsAllocated = false;
}
return bIsAllocated;
}
bool ofGstUtils::allocate(){
// wait for paused state to query the duration
if(!bIsStream){
GstState state = GST_STATE_PAUSED;
gst_element_get_state(gstPipeline,&state,NULL,2*GST_SECOND);
}
if(!bIsCamera){
GstFormat format=GST_FORMAT_TIME;
if(!gst_element_query_duration(gstPipeline,&format,&durationNanos))
ofLog(OF_LOG_WARNING,"GStreamer: cannot query time duration");
gstData.durationNanos = durationNanos;
gstData.nFrames = 0;
}
// query width, height, fps and do data allocation
if (bIsCamera) {
pixels=new unsigned char[width*height*bpp];
gstData.pixels=new unsigned char[width*height*bpp];
memset(pixels,0,width*height*bpp);
memset(gstData.pixels,0,width*height*bpp);
gstData.width = width;
gstData.height = height;
gstData.totalsize = 0;
gstData.lastFrame = 0;
}else if(gstSink!=NULL){
if(GstPad* pad = gst_element_get_static_pad(gstSink, "sink")){
if(gst_video_get_size(GST_PAD(pad), &width, &height)){
pixels=new unsigned char[width*height*bpp];
gstData.pixels=new unsigned char[width*height*bpp];;
memset(pixels,0,width*height*bpp);
memset(gstData.pixels,0,width*height*bpp);
gstData.width = width;
gstData.height = height;
gstData.totalsize = 0;
gstData.lastFrame = 0;
}else{
ofLog(OF_LOG_ERROR,"GStreamer: cannot query width and height");
return false;
}
const GValue *framerate;
framerate = gst_video_frame_rate(pad);
fps_n=0;
fps_d=0;
if(framerate && GST_VALUE_HOLDS_FRACTION (framerate)){
fps_n = gst_value_get_fraction_numerator (framerate);
fps_d = gst_value_get_fraction_denominator (framerate);
gstData.nFrames = (float)(durationNanos / GST_SECOND) * (float)fps_n/(float)fps_d;
ofLog(OF_LOG_VERBOSE,"ofGstUtils: framerate: %i/%i",fps_n,fps_d);
}else{
ofLog(OF_LOG_WARNING,"Gstreamer: cannot get framerate, frame seek won't work");
}
gst_object_unref(GST_OBJECT(pad));
}else{
ofLog(OF_LOG_ERROR,"GStreamer: cannot get sink pad");
return false;
}
}
bLoaded = true;
bHavePixelsChanged = true;
bStarted = true;
return bLoaded;
}
