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avcodec/atrac9dec: Set channels

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Fixes: null pointer dereference
Fixes: 18341/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ATRAC9_fuzzer-5681203490848768

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: Lynne <dev@lynne.ee>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit e85eb7cb04cefa37c7f8e78aac381aa8377dea0f)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-10-21 00:22:46 +02:00
parent d47c4185d5
commit dfb5dc4073
1 changed files with 1 additions and 0 deletions
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libavcodec/atrac9dec.c
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@ -876,6 +876,7 @@ static av_cold int atrac9_decode_init(AVCodecContext *avctx)
s->block_config = &at9_block_layout[block_config_idx];
avctx->channel_layout = s->block_config->channel_layout;
avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
avctx->sample_fmt = AV_SAMPLE_FMT_FLTP;
if (get_bits1(&gb)) {