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avcodec/osq: Implement flush()

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Fixes: out of array access
Fixes: 62164/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_OSQ_fuzzer-6227491892887552
Fixes: 62164/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_OSQ_fuzzer-6268561729126400
Fixes: 62164/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_OSQ_fuzzer-6414805046788096
Fixes: 62164/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_OSQ_fuzzer-6538151088488448
Fixes: 62164/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_OSQ_fuzzer-6608131540779008

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 c75fccd1d4)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
pull/390/head
Michael Niedermayer 1 year ago
parent 4f879d26e1
commit bb84cbfd0c
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1 changed files with 9 additions and 0 deletions
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  1. 9
      libavcodec/osq.c

9
libavcodec/osq.c
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@ -61,6 +61,14 @@ typedef struct OSQContext {
int pkt_offset;
} OSQContext;
static void osq_flush(AVCodecContext *avctx)
{
OSQContext *s = avctx->priv_data;
s->bitstream_size = 0;
s->pkt_offset = 0;
}
static av_cold int osq_close(AVCodecContext *avctx)
{
OSQContext *s = avctx->priv_data;
@ -478,4 +486,5 @@ const FFCodec ff_osq_decoder = {
AV_SAMPLE_FMT_S16P,
AV_SAMPLE_FMT_S32P,
AV_SAMPLE_FMT_NONE },
.flush = osq_flush,
};

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