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avcodec/aptx: Check the number of channels
Fixes: store to null pointer of type 'uint32_t' (aka 'unsigned int') Fixes: 18021/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_APTX_HD_fuzzer-5761738313564160 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
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@ -989,6 +989,9 @@ static av_cold int aptx_init(AVCodecContext *avctx)
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AptXContext *s = avctx->priv_data;
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int chan, subband;
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if (avctx->channels != 2)
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return AVERROR_INVALIDDATA;
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s->hd = avctx->codec->id == AV_CODEC_ID_APTX_HD;
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s->block_size = s->hd ? 6 : 4;
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