From 84e345b38e581980b6ee2efb6d05ea3d25d4f88d Mon Sep 17 00:00:00 2001
From: "Tim.Nicholson" <tim.nicholson@bbc.co.uk>
Date: Sat, 27 Jul 2013 18:57:28 +0200
Subject: [PATCH] Forward interlaced field information from mov to v210
 decoder.

Reported and tested by Dave Rice.

Signed-off-by: Carl Eugen Hoyos <cehoyos@ag.or.at>
---
 libavcodec/v210dec.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/libavcodec/v210dec.c b/libavcodec/v210dec.c
index 42e25cc017..c6dba23bd4 100644
--- a/libavcodec/v210dec.c
+++ b/libavcodec/v210dec.c
@@ -146,6 +146,13 @@ static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
         v += pic->linesize[2] / 2 - avctx->width / 2;
     }
 
+    if (avctx->field_order > AV_FIELD_PROGRESSIVE) {
+        /* we have interlaced material flagged in container */
+        pic->interlaced_frame = 1;
+        if (avctx->field_order == AV_FIELD_TT || avctx->field_order == AV_FIELD_TB)
+            pic->top_field_first = 1;
+    }
+
     *got_frame      = 1;
 
     return avpkt->size;