James Almer 4c35bb53f9 avcodec/ac3_parser: improve false positive detection when parsing sync frames ...

A two byte sync word is not enough to ensure we got a real syncframe, nor are
all the range checks we do in the first seven bytes. Do therefore an integrity
check for the sync frame in order to prevent the parser from filling avctx with
bogus information.

Signed-off-by: James Almer <jamrial@gmail.com>

2022-10-26 10:18:33 -03:00

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