[gst-devel] Is there any way to play audio files asynchonously
Stefan Kost
ensonic at hora-obscura.de
Fri Jul 11 13:24:25 CEST 2008
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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