Dear All,
I am trying programmatic way of processing gsteamer pipeline and having trouble with using vpudec decoder.
I was earlier using decodebin2 in program below and it plays without any issues.But when I change this to vpudec it does not work at all. Any pointers are highly appreciated.
I have humble request for a quick response.
code:
#include<stdio.h>
#include<gst/gst.h>
#include<glib.h>
//Function to process message on bus of pipeline
gboolean process_message(GstBus *bus, GstMessage *msg,gpointer data);
//Function to add pad dynamically for ogg demux
void dynamic_addpad(GstElement *element, GstPad *pad, gpointer data);
void dynamic_decodepad (GstElement* object, GstPad* arg0, gboolean arg1,gpointer user_data);
GstElement *source, *demuxer, *audio_decoder, *video_decoder, *audio_convertor,*video_convertor, *audio_sink,*video_sink,*audioqueue,*videoqueue,*videoqueue2 ;//*audio_demuxer, *video_demuxer,
int main(int argc,char* argv[])
{
GstBin *Bin;
GstBus *bus;
GMainLoop *Mainloop;
gst_init (&argc,&argv);
Mainloop = g_main_loop_new(NULL,FALSE);//NULL to use the current context and False to tell its not in running state
GstElement *pipeline = gst_pipeline_new("PIPELINE");
Bin = GST_BIN(pipeline);
bus = gst_pipeline_get_bus(GST_PIPELINE(pipeline));
source = gst_element_factory_make("filesrc","file-source");
g_object_set(G_OBJECT(source),"location",argv[1],NULL);
demuxer = gst_element_factory_make("avidemux","avi-demuxer");
//audioqueue = gst_element_factory_make("queue","Queue for audio");
videoqueue = gst_element_factory_make("queue","Queue for video");
videoqueue2 = gst_element_factory_make("queue","Queue for video2");
//audio_decoder = gst_element_factory_make("decodebin2","a_decodebin");
video_decoder = gst_element_factory_make("decodebin2","decodebin2");//"Vorbis audio decoder","vorbis");
//audio_convertor = gst_element_factory_make("audioconvert","audio convertor");//"Audio converter","audioconvert");
video_convertor = gst_element_factory_make("videoscale","video convertor");//"Audio converter","audioconvert");
//audio_sink = gst_element_factory_make("autoaudiosink","Auto audio sink");
//video_sink = gst_element_factory_make("autovideosink","XV video sink ");
video_sink = gst_element_factory_make("mfw_isink","XV video sink ");
if(!source )
{ g_print("Could not not create element -1\n");
return 0;
}
if(!demuxer )
{ g_print("Could not not create element -2\n");
return 0;
}
#if 0
if(!audioqueue )
{ g_print("Could not not create element -3 \n");
return 0;
}
#endif
if(!videoqueue )
{ g_print("Could not not create element -4\n");
return 0;
}
if(!video_decoder )
{ g_print("Could not not create element -5\n");
return 0;
}
#if 0
if(!audio_convertor )
{ g_print("Could not not create element -6\n");
return 0;
}
#endif
if(!video_convertor )
{ g_print("Could not not create element -7 \n");
return 0;
}
#if 0
if(!audio_sink )
{ g_print("Could not not create element -8\n");
return 0;
}
#endif
if(!video_sink )
{ g_print("Could not not create element -9\n");
return 0;
}
if(!videoqueue2 )
{ g_print("Could not not create element -4\n");
return 0;
}
gst_bin_add(Bin,source);
//gst_bin_add_many(Bin,demuxer,audioqueue,videoqueue,audio_decoder,audio_convertor,video_decoder,video_convertor,audio_sink,video_sink,NULL);
gst_bin_add_many(Bin,demuxer,videoqueue,video_decoder,/*videoqueue2,*/ video_convertor,video_sink,NULL);
gst_element_link(source,demuxer);
gst_element_link(videoqueue,video_decoder);
gst_element_link(video_convertor,video_sink);
//gst_element_link_many(audioqueue,audio_decoder,NULL);
//gst_element_link_many(audio_convertor,audio_sink,NULL);
//gst_element_link_many(videoqueue,video_decoder,/*videoqueue2,*/video_convertor,video_sink,NULL);
//gst_element_link_many(video_convertor,video_sink,NULL);
g_signal_connect(demuxer,"pad-added",G_CALLBACK(dynamic_addpad),NULL);//demuxer and decoder are passed as instance and data as pads of both the elements are linked in dynamic_addpad
//g_signal_connect(audio_decoder,"new-decoded-pad",G_CALLBACK(dynamic_decodepad),NULL);//demuxer and decoder are passed as instance and data as pads of both the elements are linked in dynamic_addpad
g_signal_connect(video_decoder,"new-decoded-pad",G_CALLBACK(dynamic_decodepad),NULL);//demuxer and decoder are passed as instance and data as pads of both the elements are linked in dynamic_addpad
gst_bus_add_watch(bus,process_message,Mainloop); //Mainloop is passed as user data as in the process_message actions are taken on the loop
g_object_unref(bus);
g_print("In playing state\n");
gst_element_set_state(pipeline,GST_STATE_PLAYING);//Pipeline is also a bin and bin is also an element at abstract level and hence gst_element_set_state call is used to set state of pipeline.
g_main_loop_run(Mainloop);
g_print("In playing state2\n");
gst_element_set_state(pipeline,GST_STATE_NULL);
g_object_unref(G_OBJECT(pipeline));
}
//Function to process message on bus of pipeline
gboolean process_message(GstBus *bus, GstMessage *msg,gpointer data)
{
GError *error;
gchar *debug;
GMainLoop *loop = (GMainLoop *)data;
g_print(" In process message msg->type : %d\n",GST_MESSAGE_TYPE(msg));
switch(GST_MESSAGE_TYPE(msg))
{
case GST_MESSAGE_UNKNOWN :
g_print("GST_MESSAGE_UNKNOWN \n");
break;
case GST_MESSAGE_EOS :
g_print("GST_MESSAGE_EOS \n");
g_main_loop_quit(loop);
break;
case GST_MESSAGE_ERROR :
g_print("GST_MESSAGE_ERROR \n");
gst_message_parse_error (msg, &error, &debug);
g_free(debug);
//if(!error)
{
g_print("GST_MESSAGE_ERROR message : %s \n",error->message);
}
g_main_loop_quit(loop);
break;
case GST_MESSAGE_WARNING :
g_print("GST_MESSAGE_WARNING \n");
break;
case GST_MESSAGE_INFO :
g_print("GST_MESSAGE_INFO \n");
break;
case GST_MESSAGE_TAG :
g_print("GST_MESSAGE_TAG \n");
break;
case GST_MESSAGE_BUFFERING:
g_print("GST_MESSAGE_BUFFERING \n");
break;
case GST_MESSAGE_STATE_CHANGED:
g_print("GST_MESSAGE_STATE_CHANGED \n");
break;
default :
g_print("default \n");
break;
}
return TRUE; //returns true always as it has to be always registered returning false will deregister the function
}
//Function to add pad dynamically for ogg demux
void dynamic_addpad(GstElement *element, GstPad *pad, gpointer data)
{
char* pad_name = gst_pad_get_name(pad);
g_print(" In dynamic ADDING PAD %s\n", pad_name);
#if 0
if (g_str_has_prefix(pad_name,"audio")) {
GstPad *audiodemuxsink = gst_element_get_static_pad(audioqueue,"sink");
gst_pad_link(pad,audiodemuxsink );
}
#endif
if (g_str_has_prefix(pad_name,"video")) {
GstPad *videodemuxsink = gst_element_get_static_pad(videoqueue,"sink");
gst_pad_link(pad,videodemuxsink );
}
g_free (pad_name);
}
void dynamic_decodepad (GstElement* object, GstPad* pad, gboolean arg1,gpointer user_data)
{
GstPad* videoconvertsink = gst_element_get_static_pad(video_convertor,"sink");
if (gst_pad_can_link(pad,videoconvertsink)) {
gst_pad_link(pad,videoconvertsink);
}
#if 0
GstPad* audioconvertsink = gst_element_get_static_pad(audio_convertor,"sink");
if (gst_pad_can_link(pad,audioconvertsink)) {
gst_pad_link(pad,audioconvertsink);
}
#endif
}
Could you also post the error's log?
Can you try the both pipelines using gst-launch?
Leo