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mpeg4videodec: Force quant_precision to stay within the valid range.

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Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2012-04-07 19:53:51 +02:00
parent 59edf33f7b
commit 50ec8a2acd
1 changed files with 3 additions and 0 deletions
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3
libavcodec/mpeg4videodec.c
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@ -1674,6 +1674,9 @@ static int decode_vol_header(MpegEncContext *s, GetBitContext *gb){
s->quant_precision = get_bits(gb, 4); /* quant_precision */
if(get_bits(gb, 4)!=8) av_log(s->avctx, AV_LOG_ERROR, "N-bit not supported\n"); /* bits_per_pixel */
if(s->quant_precision!=5) av_log(s->avctx, AV_LOG_ERROR, "quant precision %d\n", s->quant_precision);
if(s->quant_precision<3 || s->quant_precision>9) {
s->quant_precision = 5;
}
} else {
s->quant_precision = 5;
}