Gstreamer Application

[Giritharan]

Hi everyone,
i put my gstreamer c application main file.This is my working gstreamer
command  is --*gst-launch  mfw_v4lsrc capture-mode=1 fps-n=30 ! vpuenc
codec=0 ! queue ! mux. alsasrc ! 'audio/x-raw-int,rate=48000,channels=2' !
mfw_mp3encoder ! queue ! mux. avimux name=mux ! filesink
location=test_avi_cmd_ch1.avi sync=false*.
i wrote C application for this.while manually giving the gstreamer command
it captures video along with audio.But while run the following C
application,it captures only video.No audio.So please help me to capture
video along with audio for the following  gstreamer application

*int
main (int   argc,
      char *argv[])
{
  GMainLoop *loop;

  GstElement *pipeline,*video_source, *video_encoder,
*video_queue,*audio_source,*audio_encoder,*audio_queue,*audio_muxer, *sink,
*filter;
  //GstElement *pipeline, *source, *encoder, *sink;
  GstBus *bus;
  guint bus_watch_id;
//GstCaps *caps = gst_caps_new_empty(); 
  gst_init (&argc, &argv);
GstCaps *audio_caps;

  loop = g_main_loop_new (NULL, FALSE);
if(argc !=2)
{
 g_printerr ("Usage: %s <Ogg/Vorbis filename>\n", argv[0]);
    return -1;
  }
/* Pipeline create */
pipeline  = gst_pipeline_new("pipeline");
/*video source */
video_source    = gst_element_factory_make("mfw_v4lsrc", "video_source");

/*codec encoder */
video_encoder   = gst_element_factory_make("vpuenc", "video_encoder");

/*queue for video */
video_queue     = gst_element_factory_make("queue", "video_queue");
/*audio source */
audio_source     = gst_element_factory_make("alsasrc","audio_source");
filter    = gst_element_factory_make("capsfilter", "filter");

/*audio encoder */
audio_encoder   = gst_element_factory_make("mfw_mp3encoder",
"audio_encoder");
/*audio queue */
audio_queue     = gst_element_factory_make("queue", "audio_queue");
/*muxer*/
audio_muxer     = gst_element_factory_make("avimux","audio_muxer");

sink      = gst_element_factory_make("filesink", "sink");
g_object_set (G_OBJECT (sink), "location",argv[1], NULL);

g_object_set(G_OBJECT (sink),"sync",FALSE,NULL);
audio_caps = gst_caps_new_simple("audio/x-raw-int",
                                         "rate", G_TYPE_INT,44100,
                                         "channels",G_TYPE_INT,1,
                                          NULL);


g_object_set (G_OBJECT (filter), "caps", audio_caps, NULL);

g_object_set (G_OBJECT (video_source), "capture-mode", 1, NULL);
g_object_set (G_OBJECT (video_source), "fps-n", 30, NULL);
g_object_set (G_OBJECT (video_encoder),"codec", 0 , NULL);
g_object_set (G_OBJECT (sink), "location",argv[1], NULL);

g_object_set(G_OBJECT (sink),"sync",FALSE,NULL);

if(!pipeline || !video_source || !video_encoder || !video_queue
    || !audio_source || !audio_encoder || !audio_muxer
    || !filter || !sink) {gst-launch  mfw_v4lsrc capture-mode=1 fps-n=30 !
vpuenc codec=0 ! queue ! mux. alsasrc !
'audio/x-raw-int,rate=48000,channels=2' ! mfw_mp3encoder ! queue ! mux.
avimux name=mux ! filesink location=test_avi_cmd_ch1.avi sync=false
    g_printerr ("One element could not be created. Exiting.\n");
    return -1;
  }
printf("Creating watcher bus ID
*************************************************************************************************************\n");
  bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
  bus_watch_id = gst_bus_add_watch (bus, bus_call, loop);
  gst_object_unref (bus);


 gst_bin_add_many(GST_BIN (pipeline), video_source, video_encoder,
video_queue,audio_source,audio_encoder,audio_queue,audio_muxer,sink,filter,
NULL);
 gst_element_link_many
(video_source,video_encoder,video_queue,audio_muxer,NULL);
       
gst_element_link_many(audio_source,filter,audio_encoder,audio_queue,audio_muxer,NULL);
        gst_element_link(audio_muxer,sink);



  bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
  bus_watch_id = gst_bus_add_watch (bus, bus_call, loop);
  gst_object_unref (bus);

//printf("Sending SIGNAL to audio_muxer*********\n");
// g_signal_connect (video_source, "pad-added", G_CALLBACK
(on_pad_added),sink);

//printf("SIGNAL sent ********\n");
  g_print ("Now playing: %s\n", argv[1]);
  gst_element_set_state (pipeline, GST_STATE_PLAYING);


  g_print ("Running...\n");
  g_main_loop_run (loop);


  g_print ("Returned, stopping playback\n");
  gst_element_set_state (pipeline, GST_STATE_NULL);

  g_print ("Deleting pipeline\n");
  gst_object_unref (GST_OBJECT (pipeline));
  g_source_remove (bus_watch_id);
  g_main_loop_unref (loop);

  return 0;
*



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