Segment seek

[Mikl]

Hello,

When i am sending segment seek event, sometimes i see GST_MESSAGE_ASYNC_DONE
and sometimes GST_MESSAGE_SEGMENT_DONE on a bus.

What is the reason for this?

Mikl



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[Mikl]

Hello,

Gurus, do not keep quiet, please!

Maybe it is a simple question for you and you don`t want even to spent time
on.
But it is important to  keep supporting developers!

I have experience with GStreamer and even small tip like "try this" or "this
can be a reason" can help me.

Please!

Mikl





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[Nicolas Dufresne-5]

Le 28 nov. 2017 9:32 AM, "Mikl" <[hidden email]> a écrit :

Hello,

When i am sending segment seek event, sometimes i see GST_MESSAGE_ASYNC_DONE
and sometimes

This one is preroll termination. Happens initially, and every time you seek with the flushing flag.

GST_MESSAGE_SEGMENT_DONE on a bus.

This one indicates that it is safe to perform a non flushing segment seek. It is usually sent buy the demuxer. The decoder might not be done yet.

You always need to initiate segment seeking with a flushing seek at the moment.

What is the reason for this?

Mikl



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[Mikl]

Hello, Nicolas

Thank you for the answer.

I still can not do it. :(

Did i understand you correctly i have to do this:
0) pipeline is paused
1) gst_element_seek( _pipeline,
                1,
                GST_FORMAT_TIME,
                *GST_SEEK_FLAG_FLUSH*,
                GST_SEEK_TYPE_SET,
                segmentStart,
                GST_SEEK_TYPE_END,
                0)
2) wait for GST_MESSAGE_ASYNC_DONE
3) gst_element_seek( _pipeline,
                1,
                GST_FORMAT_TIME,
                *GST_SEEK_FLAG_SEGMENT*,
                GST_SEEK_TYPE_SET,
                segmentStart,
                GST_SEEK_TYPE_SET,
                segmentEnd)
4) wait for GST_MESSAGE_SEGMENT_DONE
5) start playback pipeline
6) read buffers


But app is freezing on (3)

What i am doing wrong?

Mikl



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[Mikl]

Hello, Nicolas

Looks like i have to do it like this:

0) pipeline is paused
1) start playback pipeline
2) gst_element_seek( _pipeline,
                1,
                GST_FORMAT_TIME,
                *GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_SEGMENT*,
                GST_SEEK_TYPE_SET,
                segmentStart,
                GST_SEEK_TYPE_SET,
                segmentEnd)
3) wait for GST_MESSAGE_SEGMENT_DONE
4) gst_element_seek( _pipeline,
                1,
                GST_FORMAT_TIME,
                *GST_SEEK_FLAG_SEGMENT*,
                GST_SEEK_TYPE_SET,
                segmentStart,
                GST_SEEK_TYPE_SET,
                segmentEnd)
5) wait for GST_MESSAGE_SEGMENT_DONE
6) read buffers (i can start already in between 4 and 4)
7) pipeline is pausing (itself)

Can you confirm, please?

Mikl



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