From 88058d9a994f42e4e9ed4e67baf696bbfe53128c Mon Sep 17 00:00:00 2001
From: Mashiat Sarker Shakkhar <mashiat.sarker@gmail.com>
Date: Tue, 9 Oct 2012 19:38:15 +0000
Subject: [PATCH] vc1dec: Set chroma reference field from REFFIELD for 1REF
field pictures
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 | 1 +
1 file changed, 1 insertion(+)
diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c
index b8237d7f8d9..4127691dc10 100644
--- a/libavcodec/vc1dec.c
+++ b/libavcodec/vc1dec.c
@@ -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;
--
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