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mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-01-24 13:56:33 +02:00
FFmpeg/libavcodec
Mark Thompson 7110a36ba0
cbs_av1: Reject thirty-two zero bits in uvlc code
The spec allows at least thirty-two zero bits followed by a one to mean
2^32-1, with no constraint on the number of zeroes.  The libaom
reference decoder does not match this, instead reading thirty-two zeroes
but not the following one to mean 2^32-1.  These two interpretations are
incompatible and other implementations may follow one or the other.
Therefore reject thirty-two zeroes because the intended behaviour is not
clear.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-07-21 15:29:25 +02:00
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