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avcodec/012v: Check dimensions more completely

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Fixes division by 0

Found-by: Thomas Lindroth <thomas.lindroth@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit d3b25383da)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2015-03-10 20:21:14 +01:00
parent de2f46c59d
commit 8639c37d2b
1 changed files with 2 additions and 2 deletions
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4
libavcodec/012v.c
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@ -45,8 +45,8 @@ static int zero12v_decode_frame(AVCodecContext *avctx, void *data,
const uint8_t *line_end, *src = avpkt->data; const uint8_t *line_end, *src = avpkt->data;
int stride = avctx->width * 8 / 3; int stride = avctx->width * 8 / 3;
if (width == 1) { if (width <= 1 || avctx->height <= 0) {
av_log(avctx, AV_LOG_ERROR, "Width 1 not supported.\n"); av_log(avctx, AV_LOG_ERROR, "Dimensions %dx%d not supported.\n", width, avctx->height);
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
} }