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Is there any way to play audio files asynchonously

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Ganesh Kundapur

Is there any way to play audio files asynchonously

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?

/Ganesh
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Stefan Sauer

Re: Is there any way to play audio files asynchonously

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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>
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>
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Ganesh Kundapur

Re: Is there any way to play audio files asynchonously

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

/Ganesh

/Ganesh

On Sun, Jul 6, 2008 at 4:48 PM, Stefan Kost <[hidden email]> 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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Stefan Sauer

Re: Is there any way to play audio files asynchonously

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 <[hidden email]
> <mailto:[hidden email]>> 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
>
>
> ------------------------------------------------------------------------
>
> -------------------------------------------------------------------------
> Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW!
> Studies have shown that voting for your favorite open source
> project,
> along with a healthy diet, reduces your potential for chronic
> lameness
> and boredom. Vote Now at http://www.sourceforge.net/community/cca08
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> <mailto:[hidden email]>
> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel
>
>
>
>
> ------------------------------------------------------------------------
>
> -------------------------------------------------------------------------
> Sponsored by: SourceForge.net Community Choice Awards: VOTE NOW!
> Studies have shown that voting for your favorite open source project,
> along with a healthy diet, reduces your potential for chronic lameness
> and boredom. Vote Now at http://www.sourceforge.net/community/cca08
>
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
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