[gstreamer-bugs] [Bug 451908] New: [ffmpegcolorspace] regression: doesn't accept GST_VIDEO_CAPS_RGBA

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-base | Ver: HEAD CVS
           Summary: [ffmpegcolorspace] regression: doesn't accept
                    GST_VIDEO_CAPS_RGBA
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: blocker
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: t.i.m at zen.co.uk
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


ffmpegcolorspace doesn't accept certain RGBA formats any longer, most notably
those output by pngdec and gdkpixbufdec.

Take a PNG with an alpha channel (e.g. the following on ubuntu feisty):

 gst-launch-0.10 filesrc location=/usr/share/example-content/logo-Ubuntu.png !
pngdec ! ffmpegcolorspace ! fakesink

errors out with not-negotiated.

This worked fine with core/base 0.10.12 + -good 0.10.5 (ie. versions in
feisty), although strangely this also doesn't work with those versions:

   gst-launch-0.10 videotestsrc ! 'video/x-raw-rgb, bpp=(int)32, depth=(int)32,
endianness=(int)4321, red_mask=(int)-16777216, green_mask=(int)16711680,
blue_mask=(int)65280, alpha_mask=(int)255' ! ffmpegcolorspace ! fakesink


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