check mb_y

Originally committed as revision 4401 to svn://svn.ffmpeg.org/ffmpeg/trunk
20 years ago · 6b53b87e20
parent 43c0040a65
commit 6b53b87e20
1 changed files with 3 additions and 0 deletions
--- a/libavcodec/h264.c
+++ b/libavcodec/h264.c
@ -4241,6 +4241,9 @@ static int decode_slice_header(H264Context *h){

    s->resync_mb_x = s->mb_x = first_mb_in_slice % s->mb_width;
    s->resync_mb_y = s->mb_y = first_mb_in_slice / s->mb_width;
+    if(s->mb_y >= s->mb_height){
+        return -1;
+    }
    
    if(s->picture_structure==PICT_FRAME){
        h->curr_pic_num=   h->frame_num;