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avcodec/mpegvideo_enc: check qmin/qmax 

Fixes Ticket2990

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-09-25 00:44:17 +02:00
parent c88ac1e023
commit bb4b041df3
1 changed files with 5 additions and 0 deletions
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5
libavcodec/mpegvideo_enc.c
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@ -629,6 +629,11 @@ av_cold int ff_MPV_encode_init(AVCodecContext *avctx)
s->inter_quant_bias = -(1 << (QUANT_BIAS_SHIFT - 2));
}
if (avctx->qmin > avctx->qmax || avctx->qmin <= 0) {
av_log(avctx, AV_LOG_ERROR, "qmin and or qmax are invalid, they must be 0 < min <= max\n");
return AVERROR(EINVAL);
}
if (avctx->intra_quant_bias != FF_DEFAULT_QUANT_BIAS)
s->intra_quant_bias = avctx->intra_quant_bias;
if (avctx->inter_quant_bias != FF_DEFAULT_QUANT_BIAS)