[gstreamer-bugs] [Bug 624697] New: Add 'video/x-raw-va' in DEFAULT_RAW_CAPS for va api support

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=624697
  GStreamer | gst-plugins-base | unspecified

           Summary: Add 'video/x-raw-va' in DEFAULT_RAW_CAPS for va api
                    support
    Classification: Desktop
           Product: GStreamer
           Version: unspecified
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: halley.zhao at intel.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
      GNOME target: ---
     GNOME version: ---


1.
raw caps are defined in $gst-plugins-base/gst/playback/gstrawcaps.h:
#define DEFAULT_RAW_CAPS \
    "video/x-raw-yuv; " \
    "video/x-raw-rgb; " \
    "video/x-raw-gray; " \
    "audio/x-raw-int; " \
 ...
decodebin depends on this raw caps to stop auto-plug (expose_pad).

2. 
libva is designed to enable hardware accelerated video decode/encode at various
entry-points (VLD, IDCT, Motion Compensation etc.)
http://freedesktop.org/wiki/Software/vaapi

3. 
we need a new raw caps like 'video/x-raw-va' adding to DEFAULT_RAW_CAPS for
libva support in gst.

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