[Bug 793886] vaapisink: White is rendered pink with AMD card, wrong hue everywhere

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=793886

--- Comment #8 from Alicia Boya García <aboya at igalia.com> ---
Turns out the problem is RGBA and BGRA pixel formats being misread.

This can be reproduced even more easily with a capsfilter:

These two reproduce the problem:

gst-launch-1.0 -v videotestsrc ! video/x-raw, format=RGBA ! vaapisink
gst-launch-1.0 -v videotestsrc ! video/x-raw, format=BGRA ! vaapisink

For comparison, YUV based formats like these work without problems:

gst-launch-1.0 -v videotestsrc ! video/x-raw, format=I420 ! vaapisink
gst-launch-1.0 -v videotestsrc ! video/x-raw, format=NV12 ! vaapisink

(In the pipeline of the previous message, vaapih264dec decoded the h264 frames
to NV12, therefore the problem did not reproduce.)

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