support skiping of mb rows during decoding

Originally committed as revision 3253 to svn://svn.ffmpeg.org/ffmpeg/trunk
2004-06-26 02:20:38 +00:00
parent 75293f05f9
commit 0dfd33c3f1
3 changed files with 24 additions and 4 deletions
--- a/libavcodec/mpeg12.c
+++ b/libavcodec/mpeg12.c
@@ -2869,6 +2869,11 @@ static int mpeg_decode_frame(AVCodecContext *avctx,
                        if(avctx->hurry_up>=5) break;
                        
                        if (!s->mpeg_enc_ctx_allocated) break;
+
+                        if(s2->codec_id == CODEC_ID_MPEG2VIDEO){
+                            if(mb_y < avctx->skip_top || mb_y >= s2->mb_height - avctx->skip_bottom)
+                                break;
+                        }
                        
                        if(s2->first_slice){
                            s2->first_slice=0;