[gstreamer-bugs] [Bug 633147] New: Simple reverse negotiation pipeline is broken.

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=633147
  GStreamer | gstreamer (core) | git

           Summary: Simple reverse negotiation pipeline is broken.
    Classification: Desktop
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: NEW
          Severity: blocker
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: thaytan at mad.scientist.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
      GNOME target: ---
     GNOME version: ---


gst-launch videotestsrc ! videoscale ! ffmpegcolorspace ! ximagesink no longer
reverse negotiates correctly. Enlarging the window displays the video at the
original size, with black borders.

Reverting f8abf35000570a8afe64268b430e998e2d735e61 fixes it:

commit f8abf35000570a8afe64268b430e998e2d735e61
Author: Wim Taymans <wim.taymans at collabora.co.uk>
Date:   Thu Aug 26 15:12:49 2010 +0200

    basetransform: recover from invalid downstream suggestions

    When we are handling a buffer and need to allocate an output buffer, handle
the
    case when downstream suggests us a format that we can't convert the input
buffer
    to. In that case, check if there is another format available downstream
instead
    of failing.

    Fixes #621332 and see also #614296

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