RepoMirrors/ffmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2025-01-14 03:11:20 +00:00
Code Issues Projects Releases Wiki Activity

Prevent block size from inreasing in the shorten decoder.

Browse Source 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Laurent Aimar 2011-10-01 00:43:05 +02:00 committed by Michael Niedermayer
parent 581898ae88
commit b399cbfba5
1 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
libavcodec/shorten.c
View File

@ -482,9 +482,15 @@ static int shorten_decode_frame(AVCodecContext *avctx,
case FN_BITSHIFT: case FN_BITSHIFT:
s->bitshift = get_ur_golomb_shorten(&s->gb, BITSHIFTSIZE); s->bitshift = get_ur_golomb_shorten(&s->gb, BITSHIFTSIZE);
break; break;
case FN_BLOCKSIZE: case FN_BLOCKSIZE: {
s->blocksize = get_uint(s, av_log2(s->blocksize)); int blocksize = get_uint(s, av_log2(s->blocksize));
if (blocksize > s->blocksize) {
av_log(avctx, AV_LOG_ERROR, "Increasing block size is not supported\n");
return AVERROR_PATCHWELCOME;
}
s->blocksize = blocksize;
break; break;
}
case FN_QUIT: case FN_QUIT:
*data_size = 0; *data_size = 0;
return buf_size; return buf_size;