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Andreas Rheinhardt authored
It involves less allocations and therefore has the nice property that deriving a reference from a reference can't fail. This allows for considerable simplifications in ff_h264_(ref|replace)_picture(). Switching to the RefStruct API also allows to make H264Picture smaller, because some AVBufferRef* pointers could be removed without replacement. Signed-off-by:
Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
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