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23044a1047
This adds a cogl-gst renderer to decode NV12 data. NV12 is split into two buffers, one for the luma component and another for the two chrominance components at a quarter of the resolution. The second buffer is uploaded to a two-component RG texture. RG-component textures are only supported if COGL_FEATURE_ID_TEXTURE_RG is advertised by Cogl so the NV12 cap is also only advertised when that is available. Based on a patch by Lionel Landwerlin which was in turn based on a patch from Edward Hervey and Matthieu Bouron for Clutter-Gst: https://bugzilla.gnome.org/show_bug.cgi?id=712832 Reviewed-by: Robert Bragg <robert@linux.intel.com> Reviewed-by: Lionel Landwerlin <llandwerlin@gmail.com> (cherry picked from commit 2c619216964b46aab313be3ef1c405dfc720d258)