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Extradata length checks for Huffyuv.

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Patch by Michael Kaufmann hallo $(name) dash $(surname) ch

Originally committed as revision 22856 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Kaufmann 2010-04-12 16:16:43 +00:00 committed by Benoit Fouet
parent 843c7aa8fb
commit 2818bdf22b
1 changed files with 4 additions and 1 deletions
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5
libavcodec/huffyuv.c
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@ -452,6 +452,9 @@ s->bgr32=1;
if(s->version==2){
int method, interlace;
if (avctx->extradata_size < 4)
return -1;
method= ((uint8_t*)avctx->extradata)[0];
s->decorrelate= method&64 ? 1 : 0;
s->predictor= method&63;
@ -462,7 +465,7 @@ s->bgr32=1;
s->interlaced= (interlace==1) ? 1 : (interlace==2) ? 0 : s->interlaced;
s->context= ((uint8_t*)avctx->extradata)[2] & 0x40 ? 1 : 0;
if(read_huffman_tables(s, ((uint8_t*)avctx->extradata)+4, avctx->extradata_size) < 0)
if(read_huffman_tables(s, ((uint8_t*)avctx->extradata)+4, avctx->extradata_size-4) < 0)
return -1;
}else{
switch(avctx->bits_per_coded_sample&7){