fix AVC bitstream buffer overflow issue

Intel-Media-SDK / MediaSDK

The Intel® Media SDK

MIT License

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fix AVC bitstream buffer overflow issue #2964

Closed shawnli2 closed 2 years ago

shawnli2 commented 2 years ago

AVC has VLC coding which cannot get bitsteram header size. To avoid get bits operation out of bound ,need to check remaining bits size before reading.

shawnli2 commented 2 years ago

@wangyan-intel Please help review this PR, thanks!