vc1dec: Set chroma reference field from REFFIELD for 1REF field pictures
authorMashiat Sarker Shakkhar <mashiat.sarker@gmail.com>
Tue, 9 Oct 2012 19:38:15 +0000 (19:38 +0000)
committerDerek Buitenhuis <derek.buitenhuis@gmail.com>
Wed, 10 Oct 2012 18:50:07 +0000 (14:50 -0400)
Interlaced field pictures can have one or two reference pictures, signaled
by NUMREF syntax element. For single reference pictures, reference picture
is determined by REFFIELD syntax element.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
libavcodec/vc1dec.c

index b8237d7..4127691 100644 (file)
@@ -794,6 +794,7 @@ static void vc1_mc_4mv_chroma(VC1Context *v, int dir)
     /* calculate chroma MV vector from four luma MVs */
     if (!v->field_mode || (v->field_mode && !v->numref)) {
         valid_count = get_chroma_mv(mvx, mvy, intra, 0, &tx, &ty);
+        chroma_ref_type = v->reffield;
         if (!valid_count) {
             s->current_picture.f.motion_val[1][s->block_index[0] + v->blocks_off][0] = 0;
             s->current_picture.f.motion_val[1][s->block_index[0] + v->blocks_off][1] = 0;