Miscellany

#include <gst/gst.h>

#define AUDIO_Z
#define VIDEO_Z

static GMainLoop *loop;
GstElement *pipeline, *source, *abin, *vbin, *vsink, *vqueue, *video_decoder, *identity, *colorspace, *videoscale;
GstElement *audiodepay, *videodepay, *asink, *aconv, *ascale, *audio_decoder, *volume, *aqueue;

static void
new_pad (GstElement *element, GstPad *pad, gpointer data)
{  
	GstPad *sinkpad=NULL;
	GstCaps *caps; 
	GstStructure *s;
        const gchar *mediatype;

	caps = gst_pad_get_caps(pad);    
        g_print (" \n  setting caps of rtspsrc \n  %" GST_PTR_FORMAT, caps);
	s= gst_caps_get_structure(caps,0); 
        mediatype = gst_structure_get_string(s,"media");
        g_print("\n mediatype= %s \n",mediatype);
        
#ifdef VIDEO_Z
	if(!strcmp(mediatype,"video"))
	{  
	  g_print("\nEntered video loop\n");
	 
	  sinkpad = gst_element_get_pad (vbin, "sink");
	  if(sinkpad != NULL)
	  {
	    gst_pad_link (pad, sinkpad);
	  }
	  else
		g_print("sink pad not existing\n");

          gst_object_unref (sinkpad);
	  	  
	}
#endif

#ifdef AUDIO_Z
	if(!strcmp(mediatype,"audio"))
	{ 

	  g_print("\nEntered audio loop\n");
	  
	  sinkpad = gst_element_get_pad (abin, "sink");
	  if(sinkpad != NULL)
	  {
	    gst_pad_link (pad, sinkpad);	    
	  }
	  else
		g_print("sink pad not existing\n");
 
          gst_object_unref (sinkpad);

	}
#endif
}


int
main (int argc, char *argv[])
{
  GstPad *pad;
  
  gst_init(&argc, &argv);

  pipeline = gst_pipeline_new (NULL);
  g_assert (pipeline);
  
  source = gst_element_factory_make("rtspsrc", "source");
  g_assert (source); 
  g_object_set (G_OBJECT (source),"location" ,argv[1],NULL); 
  g_signal_connect (source, "pad-added", G_CALLBACK (new_pad), NULL);

  gst_bin_add (GST_BIN (pipeline), source); 

#ifdef AUDIO_Z
  audiodepay = gst_element_factory_make ("rtpamrdepay", "adepay");
  g_assert (audiodepay);
  audio_decoder = gst_element_factory_make ("amrnbdec", "audio_dec");
  g_assert (audio_decoder);	
  aconv = gst_element_factory_make ("audioconvert", "aconv");
  g_assert (aconv);
  aqueue = gst_element_factory_make ("queue", "aqueue");
  g_assert (aqueue);
  asink = gst_element_factory_make ("alsasink", "asink");
  g_assert (asink);
  //g_object_set (asink, "sync", FALSE, NULL);

  abin = gst_bin_new("abin");
  g_assert(abin);
  gst_bin_add_many (GST_BIN (abin), audiodepay, audio_decoder, aconv, aqueue, asink, NULL);
  gst_element_link_many(audiodepay, audio_decoder, aconv, aqueue, asink, NULL);
  pad = gst_element_get_pad (audiodepay, "sink");
  gst_element_add_pad (abin, gst_ghost_pad_new ("sink", pad));
  gst_object_unref (pad);
#endif

#ifdef VIDEO_Z
  videodepay = gst_element_factory_make ("rtpmp4vdepay", "vdepay");
  g_assert (videodepay);
  video_decoder = gst_element_factory_make ("ffdec_mpeg4", "video_dec");
  g_assert (video_decoder);
  colorspace = gst_element_factory_make ("ffmpegcolorspace", "colorspace");
  g_assert (colorspace);
  videoscale = gst_element_factory_make ("videoscale", "vscale");
  g_assert (videoscale);
  vqueue = gst_element_factory_make ("queue", "vqueue");
  g_assert (vqueue); 
  vsink = gst_element_factory_make ("xvimagesink", "vsink");
  g_assert (vsink);
  //g_object_set (vsink, "sync", FALSE, NULL);

  vbin = gst_bin_new("vbin");
  g_assert(vbin);
  gst_bin_add_many (GST_BIN(vbin), videodepay, video_decoder, colorspace, videoscale, vqueue, vsink, NULL);
  gst_element_link_many(videodepay, video_decoder, colorspace, videoscale, vqueue, vsink, NULL);
  pad = gst_element_get_pad (videodepay, "sink");
  gst_element_add_pad (vbin, gst_ghost_pad_new ("sink", pad));
  gst_object_unref (pad);
#endif

#ifdef AUDIO_Z
  gst_bin_add(GST_BIN (pipeline), abin);
#endif

#ifdef VIDEO_Z
  gst_bin_add(GST_BIN (pipeline), vbin);
#endif	

  gst_element_set_state (pipeline, GST_STATE_PLAYING);

  loop = g_main_loop_new (NULL, FALSE);

  g_main_loop_run (loop);
    
  return 0;
}