[Bug 723772] New: make gst-gl compatible with DirectX

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=723772
  GStreamer | gst-plugins-gl | git

           Summary: make gst-gl compatible with DirectX
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Windows
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-gl
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: julien.isorce at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


There is an OpenGL extension to convert a DirectX surface to a gl texture:
http://developer.download.nvidia.com/opengl/specs/WGL_NV_DX_interop.txt

I think it works in both directions (at least dx surface to gl texture)

gst-launch-1.0 ... ! dxvadec ! glimagesink
gst-launch-1.0 ... ! dxvadec ! gleffects ! d3dvideosink
gst-launch-1.0 videotestsrc ! gleffects ! d3dvideosink
gst-launch-1.0 videotestsrc ! gleffects ! dxvaenc ! h264parse ! ...
gst-launch-1.0 videotestsrc ! gleffects ! dxvadeinterlace ! glimagesink

d3dvideosink:
http://cgit.freedesktop.org/gstreamer/gst-plugins-bad/tree/sys/d3dvideosink)

DXVA:
http://en.wikipedia.org/wiki/DirectX_Video_Acceleration
http://msdn.microsoft.com/en-us/library/windows/desktop/ee663582(v=vs.85).aspx
http://msdn.microsoft.com/en-us/library/windows/desktop/ms694840(v=vs.85).aspx

For gltexture to dxsurface we would need a new meta GstVideoDXSurfaceUploadMeta
 GST_CAPS_FEATURE_META_GST_VIDEO_DX_SURFACE_UPLOAD_META
With a default upload/download callback that just convert a gl texture to a dx
surface. So that every dx element could use it

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