Created attachment 111678 [details] [review]
add reverse playback for avi files

It seems to almost work. On thing I don't see is the fact that each backwards chunck should have the first buffer with a DISCONT set.

ok, the discont is ok, I was too fast. There is just one check that needs to be removed for reverse playback (it goes eos if it reaches a keyframe after the segment.stop, which cause premature EOS).

I changed some small things here and there, please see if this works for you too. I also tested reverse and forwards looping.

        Patch by: Thijs Vermeir <thijsvermeir at gmail dot com>

        * gst/avi/gstavidemux.c: (gst_avi_demux_index_next),
        (gst_avi_demux_index_prev), (gst_avi_demux_index_entry_for_time),
        (gst_avi_demux_do_seek), (gst_avi_demux_handle_seek),
        (gst_avi_demux_process_next_entry):
        * gst/avi/gstavidemux.h:
        Implement reverse playback. Fixes #535300.
        Small cleanups.