[gst-devel] Is there any way to play audio files asynchonously

[Stefan Kost]

Hi,

Ganesh Kundapur schrieb:
>              
> Hi,
>   Is it possible to have the callbacks while playing the audio stream by 
> using "playbin" element with uri propery?

Sure, callbacks (si you mean signal) are emitted while playing. Alltough they 
need a main_loop.

Stefan

> 
> /Ganesh
> 
> 
> /Ganesh
> On Sun, Jul 6, 2008 at 4:48 PM, Stefan Kost <ensonic at hora-obscura.de 
> <mailto:ensonic at hora-obscura.de>> wrote:
> 
>     Ganesh Kundapur schrieb:
> 
>         Hi,
>          I'm playing mp3 file and the code snippet for that is as fallows
> 
>         ...
>         loop = g_main_loop_new ( NULL, FALSE );
> 
>         pipeline = gst_pipeline_new ( "mp3-player" );
>         source = gst_element_factory_make ( "filesrc", "file-source" );
>         decoder = gst_element_factory_make ( "mad", "mp3-decoder" );
>         conv = gst_element_factory_make ( "audioconvert", "converter" );
>         sink = gst_element_factory_make ( "alsasink", "sink" );
> 
>         g_object_set ( G_OBJECT(source), "location", "x.mp3", NULL );
> 
>         gst_bin_add_many ( GST_BIN(pipeline), souce, decoder, conv,
>         sink, NULL );
>         gst_element_link_many ( souce, decoder, conv, sink, NULL );
> 
>         gst_element_set_state ( pipeline, GST_STATE_PLAYING );
>         g_main_loop_run ( loop );
> 
>         Here after, it starts playing. Once its playing, control is not
>         coming out till the stream ended.
>         If i want to pause after certain time interval say 10 sec, i
>         cant do it while playing the stream. Even i set alarm signal and
>         signal handler, but  alarm signal is not delivered while playing
>         the stream.
> 
>         Is there any way to play the audio files asynchronously?
> 
>     They are play'ed async already. You need to register some callback
>     to get control back. E.g.:
>     g_timeout_add_seconds()
> 
>     or without a mainloop:
>     clock = gst_pipeline_get_clock (GST_PIPELINE (bin));
>     clock_id = gst_clock_new_single_shot_id (clock,
>        gst_clock_get_time (clock) + (10 * GST_SECOND));
>     gst_clock_id_wait (clock_id, NULL);
> 
>     Stefan
> 
> 
>         /Ganesh
> 
> 
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