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avcodec/m101: Check BPS value

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Fixes null pointer dereference
Fixes Ticket5520

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2016-05-18 17:11:20 +02:00
parent 810a8ba5b6
commit 42ee137a0a
1 changed files with 5 additions and 2 deletions
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7
libavcodec/m101.c
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@ -31,9 +31,12 @@ static av_cold int m101_decode_init(AVCodecContext *avctx)
if (avctx->extradata[2*4] == 10) if (avctx->extradata[2*4] == 10)
avctx->pix_fmt = AV_PIX_FMT_YUV422P10; avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
else else if (avctx->extradata[2*4] == 8) {
avctx->pix_fmt = AV_PIX_FMT_YUYV422; avctx->pix_fmt = AV_PIX_FMT_YUYV422;
} else {
avpriv_request_sample(avctx, "BPS %d\n", avctx->extradata[2*4]);
return AVERROR_INVALIDDATA;
}
return 0; return 0;
} }