Simple Video Player for FreeScale IMX53 QSB on Debian Wheezy Without X11

video_player.c

#include <gst/gst.h>
#include <glib.h>
#include <string.h>

// Compile command: 
// gcc -Wall $(pkg-config --cflags --libs gstreamer-0.10) test.c -o test  

// Gstreamer test:
// gst-launch filesrc location=<your video file> typefind=true ! aiurdemux name=demux demux. ! queue max-size-buffers=0 max-size-time=0 ! mfw_vpudecoder ! autovideosink demux. ! queue ! mfw_aacdecoder ! autoaudiosink

static GstElement *source, *demuxer, *vdqueue, *adqueue, *vdconvert, *adconvert, *vdsink, *adsink, *decvd, *decad;

static gboolean
bus_call (GstBus     *bus,
          GstMessage *msg,
          gpointer    data)
{
  GMainLoop *loop = (GMainLoop *) data;

  switch (GST_MESSAGE_TYPE (msg)) {

    case GST_MESSAGE_EOS:
      g_print ("End of stream\n");
      g_main_loop_quit (loop);
      break;

    case GST_MESSAGE_ERROR: {
      gchar  *debug;
      GError *error;

      gst_message_parse_error (msg, &error, &debug);
      g_free (debug);

      g_printerr ("Error: %s\n", error->message);
      g_error_free (error);

      g_main_loop_quit (loop);
      break;
    }
    default:
      break;
  }

  return TRUE;
}

//function to link demux and decoder
static void pad_added (GstElement* demux, GstPad* pPad, GstElement* decoder)
{
  /*declare a pad*/
  GstPad *sinkpad;
  /*get the sink pad of the decoder*/
  sinkpad = gst_element_get_static_pad (decoder, "sink");
  /*link the sink pad of the decoder with the one of the demux*/
  gst_pad_link (pPad, sinkpad);
  /*get rid of the sinkpad object*/
  gst_object_unref (sinkpad);
}


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

  GstElement *pipeline;
  GstBus *bus;

  gst_init (&argc, &argv);

  loop = g_main_loop_new (NULL, FALSE);

  if (argc != 2) {
    g_printerr ("Usage: %s <Video H264 filename>\n", argv[0]);
    return -1;
  }
 
  pipeline      = gst_pipeline_new ("media-player");
  source        = gst_element_factory_make ("filesrc","file-source");
  demuxer       = gst_element_factory_make ("aiurdemux","demuxer");
  decvd         = gst_element_factory_make ("mfw_vpudecoder", "video-decoder");
  decad         = gst_element_factory_make ("mfw_aacdecoder", "audio-decoder");
  vdsink        = gst_element_factory_make ("autovideosink",    "video-sink");
  vdqueue       = gst_element_factory_make ("queue",            "video-queue");
  adqueue       = gst_element_factory_make ("queue",            "audio-queue");
  vdconvert       = gst_element_factory_make ("autovideoconvert",            "video-convert");
  adconvert       = gst_element_factory_make ("audioconvert",            "audio-convert");
  adsink        = gst_element_factory_make ("autoaudiosink",         "audio-sink");

//  g_object_set (decvd, "codec-type", "std_avc", NULL);

   if (!pipeline || !source || !demuxer || !decvd || !decad || !vdsink || !vdqueue || !adqueue || !adsink) {
    g_printerr ("One element could not be created. Exiting.\n");
    return -1;
  }
 
  g_object_set (G_OBJECT (source), "location", argv[1], NULL);
  g_object_set(G_OBJECT (source), "typefind", TRUE, NULL);
 
  bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
  gst_bus_add_watch (bus, bus_call, loop);
  gst_object_unref (bus);
 
  gst_bin_add_many (GST_BIN (pipeline),
                    source, demuxer, decvd, decad, adqueue, vdqueue, adconvert, vdconvert, vdsink, adsink,  NULL);
 
  /* link source and demux*/
  if (!gst_element_link (source, demuxer)) {
    g_warning ("Failed to link elements source and demux!");
  }
  /*link decoder and videosink*/
  if (!gst_element_link_many (vdqueue, decvd, vdsink, NULL)) {
    g_warning ("Failed to vdqueue, decvd elements!");
  }
  if (!gst_element_link_many (adqueue, decad, adsink, NULL)) {
    g_warning ("Failed to adqueue, decad elements!");
  }

  /*link demux and decoder
  Since demux has an output for audio and an output for video some special
  handling needs to be done by using g_signal_conect function an our callback
  function pad added explained below*/
  if (!g_signal_connect (demuxer, "pad-added", (GCallback)pad_added,
  vdqueue))
  {
    g_warning ("Failed to link elements demux and vdqueue!");
  }
  if (!g_signal_connect (demuxer, "pad-added", (GCallback)pad_added,
  adqueue))
  {
    g_warning ("Failed to link elements demux and adqueue!");
  }
 
  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));

  return 0;
}