[Bug 666174] [ffdec] segfault because gst_pad_alloc_buffer_and_set_caps return a buffer with a size of 0

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=666174
  GStreamer | gst-ffmpeg | git

--- Comment #6 from Mark Nauwelaerts <mnauw at users.sourceforge.net> 2011-12-19 11:11:12 UTC ---
FTR, "recent capsfilter change" mentioned above is (afaics) the following:

commit 341d7a4c0dbd69f86faaf1ffd2e94e99bac6f8c9
Author: Sjoerd Simons <sjoerd.simons at collabora.co.uk>
Date:   Wed Jul 20 14:05:27 2011 +0200

    capsfilter: don't assume _get_caps still has to be

    _set_caps only gets called when the buffer is actually pushed, so there
    is a reasonably big window between when the initial caps are retrieved
    and when the caps are set on our src pad. So we can't assume the not
    having negotiated caps on our src pad means _get_caps still has to be
    called.

    Instead simply always suggest the new caps on buffer_alloc.

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