There could be a case where:
1) you do a new set_caps after buffers have been processed.
2) ts_offset gets set to a different value, eg 0.033333333
3) your pads get EOS, but the check dor that doesn't work
because you use ts_offset + a truncated value < segment.stop
4) so in the next collected, you end up comparing for example:
0.9999999999 > 1., which is false and means you don't send EOS.
Also adds scale_round in two other places where it potentially could
have caused problems.
We'll have to pop buffer from collectpads and store it
internally only to get the timestamp of the next buffer.
If we continue to keep it in collectpads, no new buffer
to calculate the end time will ever arrive.
https://bugzilla.gnome.org/show_bug.cgi?id=703743
When the segment start is not 0, this created a situation where
the output_end_time is inferior to output_start_time, and the duration
of the next buffer ended up underflowing.
https://bugzilla.gnome.org/show_bug.cgi?id=701385
There is no reason to send a flush-stop when receiving a seek event.
In the case of a flushing seek, we could eventually want to, but in
the code path were we check if the seek is "flushing", we have the
following comment that makes sense:
"we can't send FLUSH_STOP here since upstream could start pushing data
after we unlock mix->collect.
We set flush_stop_pending to TRUE instead and send FLUSH_STOP after
forwarding the seek upstream or from gst_videomixer_collected,
whichever happens first."
https://bugzilla.gnome.org/show_bug.cgi?id=684237
This reverts commit 84ae670ab4.
Actually this is not how it is supposed to work. videomixer
creates a [0,-1] segment and then puts frames of the different
streams there based on their running times in their own segments.
If both pads receive data at the same time, they will both get their
sink_setcaps called which will call the src_setcaps, but there is
a race condition where the second one might not be called.
Fixes: https://bugzilla.gnome.org/show_bug.cgi?id=683842
gst_video_frame_map() increases the refcount, which makes
the buffer not writable any more technically, so calling
gst_buffer_memset() on it will cause nasty warnings.
Unit test disabled because it very rarely (for me)
fails, possibly negotiation-related.
https://bugzilla.gnome.org/show_bug.cgi?id=684398
In the current implementation, the custom pad query function is not called.
This patch, set that query function on the GstCollectPads to avoid this
shadowing.
See https://bugzilla.gnome.org/show_bug.cgi?id=684237
