[FFmpeg-cvslog] r23328 - trunk/libavcodec/h264_ps.c

[michael]

Author: michael
Date: Tue May 25 23:51:27 2010
New Revision: 23328

Log:
Check for VUI overeading and reset num_reoder_frames.
This helps the video from issue1831

Modified:
   trunk/libavcodec/h264_ps.c

Modified: trunk/libavcodec/h264_ps.c
==============================================================================
--- trunk/libavcodec/h264_ps.c	Tue May 25 22:56:34 2010	(r23327)
+++ trunk/libavcodec/h264_ps.c	Tue May 25 23:51:27 2010	(r23328)
@@ -205,6 +205,12 @@ static inline int decode_vui_parameters(
         sps->num_reorder_frames= get_ue_golomb(&s->gb);
         get_ue_golomb(&s->gb); /*max_dec_frame_buffering*/
 
+        if(s->gb.size_in_bits < get_bits_count(&s->gb)){
+            av_log(h->s.avctx, AV_LOG_ERROR, "Overread VUI by %d bits\n", get_bits_count(&s->gb) - s->gb.size_in_bits);
+            sps->num_reorder_frames=0;
+            sps->bitstream_restriction_flag= 0;
+        }
+
         if(sps->num_reorder_frames > 16U /*max_dec_frame_buffering || max_dec_frame_buffering > 16*/){
             av_log(h->s.avctx, AV_LOG_ERROR, "illegal num_reorder_frames %d\n", sps->num_reorder_frames);
             return -1;