[gst-devel] Playing Mp3 help

[basavaraj P]

Hello Katcipis,

Following is the on_pad_added function.

*static void
on_pad_added (GstElement *element,
              GstPad     *pad,
              gpointer    data)
{
  GstPad *sinkpad;
  GstElement *decoder = (GstElement *) data;

  /* We can now link this pad with the mp3-decoder sink pad */
  g_print ("Dynamic pad created, linking demuxer/decoder\n");

  sinkpad = gst_element_get_static_pad (decoder, "sink");

  gst_pad_link (pad, sinkpad);

  gst_object_unref (sinkpad);
}
*

Thanks,
Basavaraj



On Thu, Nov 19, 2009 at 3:11 PM, Tiago Katcipis <katcipis at inf.ufsc.br>wrote:

> It would be easier if you show your on_pad_added function, and if you tell
> exactly what error messages do you get when you run your application.
>
> To investigate the capabilities of a element you can use gst-inspect.
>
> On a terminal you can type for example:
> gst-inspect flump3dec
>
> it will give an complete specification of the flump3dec element.
>
> best regards,
> Katcipis
>
> On Thu, Nov 19, 2009 at 6:40 AM, basavaraj P <basavarajp82 at gmail.com>wrote:
>
>> Hello,
>>
>> Following is code which plays mp3 using playbin
>>
>> *  /* set up */
>>   play = gst_element_factory_make ("playbin2", "play");
>>   g_object_set (G_OBJECT (play), "uri",
>> "file:///home/basavaraj/Music/JabSeTereNaina.mp3", NULL);
>>
>>   bus = gst_pipeline_get_bus (GST_PIPELINE (play));
>> //  gst_bus_add_watch (bus, my_bus_callback, loop);
>>   gst_object_unref (bus);
>>
>>   gst_element_set_state (play, GST_STATE_PLAYING);
>> *
>>
>> Following is code which does not play mp3. Please help me what all plugins
>> we need to connect and
>> how to find their capabilities
>>
>> *  /* Create gstreamer elements */
>>   GstElement* pipeline = gst_pipeline_new ("audio-player");
>>   GstElement* source   = gst_element_factory_make ("filesrc",
>> "file-source");
>>   GstElement* demuxer  = gst_element_factory_make ("mpegdemux2",
>> "mpeg-demuxer");
>>   GstElement* decoder  = gst_element_factory_make ("flump3dec",
>> "fluendo-decoder");
>> //  GstElement* decoder = gst_element_factory_make("decodebin",
>> "decoderbin");
>>   GstElement* conv     = gst_element_factory_make ("audioconvert",
>> "converter");
>>   GstElement* sink     = gst_element_factory_make ("autoaudiosink",
>> "audio-output");
>>
>>   if (!pipeline || !source || !demuxer || !decoder || !conv || !sink) {
>>     g_printerr ("One element could not be created. Exiting.\n");
>>     return -1;
>>   }
>>
>>   /* Set up the pipeline */
>>
>>   /* we set the input filename to the source element */
>> //  g_object_set (G_OBJECT (source), "uri",
>> "file:///home/basavaraj/Music/Jab.mp3", NULL);
>>   g_object_set (G_OBJECT (source), "location",
>> "/home/basavaraj/Music/Jab.mp3", NULL);
>>
>>   /* we add a message handler */
>>   GstBus *bus = gst_pipeline_get_bus (GST_PIPELINE (pipeline));
>>   gst_bus_add_watch (bus, bus_call, loop);
>>   gst_object_unref (bus);
>>
>>   /* we add all elements into the pipeline */
>>   /* file-source | mp3-demuxer | mp3-decoder | converter | alsa-output */
>>   gst_bin_add_many (GST_BIN (pipeline),
>>                     source, demuxer, decoder, conv, sink, NULL);
>>
>>   /* we link the elements together */
>>   /* file-source -> mp3-demuxer ~> mp3-decoder -> converter -> alsa-output
>> */
>>   gst_element_link (source, demuxer);
>>   g_signal_connect (demuxer, "pad-added", G_CALLBACK (on_pad_added),
>> decoder);
>>
>>   /* Set the pipeline to "playing" state*/
>>   g_print ("Now playing: %s\n", argv[1]);
>>   gst_element_set_state (pipeline, GST_STATE_PLAYING);
>> *
>>
>> Thanks in advance,
>> Basavaraj
>>
>>
>>
>>
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