Rewind a pipeline

[Stefan Sauer]

On 05/20/2013 03:41 PM, Jorge Fernandez Monteagudo wrote:
> Answering myself I've seen using GST_DEBUG that the event is ignored. First I have to set the
> pipeline in GST_STATE_PLAYING then send the seek event and now it works!

If you go to playing again, you should not need to seek. If you want to
play in a loop, you can seek with the SEGMENT flag initially and then
wait for SEGMENT_DONE on the bus (instead of EOS) and seek again. The
continuation seek won't need the FLUSH flag. This way you get seamless
loops.

Stefan
>
> Sorry for disturbing the list!
>
> ________________________________________
> From: gstreamer-devel-bounces+jorgefm=cirsa.com at lists.freedesktop.org [gstreamer-devel-bounces+jorgefm=cirsa.com at lists.freedesktop.org] On Behalf Of Jorge Fernandez Monteagudo [jorgefm at cirsa.com]
> Sent: Monday, May 20, 2013 3:27 PM
> To: gstreamer-devel at lists.freedesktop.org
> Subject: Rewind a pipeline
>
> Hi all!
>
> Is it possible to reuse a pipeline? I would like to avoid creating and destroying a pipeline when I
> want to have a video playing in a loop. How can I do that? When I try to send a seek event I
> always get an error. The next code always print "Send seek event failed!"
>
>     // Set the pipeline ready.
>     ret = gst_element_set_state( pipeline, GST_STATE_READY );
>     if( ret == GST_STATE_CHANGE_FAILURE ) {
>       printf( "Failed to start up pipeline!\n" );
>       done = 1;
>       return;
>     }
>
>     // Seek the stream init.
>     GstEvent *seek_event = NULL;
>
>     seek_event = gst_event_new_seek( 1.0, GST_FORMAT_TIME,
>                                      (GstSeekFlags)(GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_KEY_UNIT),
>                                      GST_SEEK_TYPE_SET, 0LL,
>                                      GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE );
>     if( gst_element_send_event( pipeline, seek_event ) == false ) {
>       printf( "Send seek event failed!\n" );
>       done = 1;
>       return;
>     }
>
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