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avcodec/cngdec: Remove AV_CODEC_CAP_DELAY

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As is the decoder will never stop, it will cause an infinite loop. The RFC seems only
to speak of non empty packets so endlessly generating noise from the last empty flush
packets seems wrong.

Fixes: infinite loop
Fixes: 18333/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_COMFORTNOISE_fuzzer-5668481831272448

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 327a968817a366c24d1513526258a3dbbcf888a7)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-10-19 21:58:26 +02:00
parent aa8498c417
commit 1e57ce1dd5
1 changed files with 1 additions and 1 deletions
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2
libavcodec/cngdec.c
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@ -167,5 +167,5 @@ AVCodec ff_comfortnoise_decoder = {
.close = cng_decode_close,
.sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16,
AV_SAMPLE_FMT_NONE },
.capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_DR1,
.capabilities = AV_CODEC_CAP_DR1,
};