[FFmpeg-cvslog] indeo5: check for unsupported luma block type
Michael Niedermayer
git at videolan.org
Sun Apr 15 21:32:47 CEST 2012
ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sun Apr 15 21:01:35 2012 +0200| [88a97d660d65b8d5ac2ca719969c0096ace00114] | committer: Michael Niedermayer
indeo5: check for unsupported luma block type
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=88a97d660d65b8d5ac2ca719969c0096ace00114
---
libavcodec/indeo5.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/libavcodec/indeo5.c b/libavcodec/indeo5.c
index d0aea84..b35486b 100644
--- a/libavcodec/indeo5.c
+++ b/libavcodec/indeo5.c
@@ -167,6 +167,11 @@ static int decode_gop_header(IVI5DecContext *ctx, AVCodecContext *avctx)
blk_size = 8 >> get_bits1(&ctx->gb);
mb_size = blk_size << !mb_size;
+ if (p==0 && blk_size==4) {
+ av_log(avctx, AV_LOG_ERROR, "4x4 luma blocks are unsupported!\n");
+ return AVERROR_PATCHWELCOME;
+ }
+
blk_size_changed = mb_size != band->mb_size || blk_size != band->blk_size;
if (blk_size_changed) {
band->mb_size = mb_size;
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