From 8cbb8f53575d40a26d5b1d065acb0a85bbb15e74 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <tomas.hardin@codemill.se>
Date: Mon, 15 Oct 2012 17:15:37 +0200
Subject: [PATCH] dv: Set FS flag from AVFrame.top_field_first
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libavcodec/dv.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/libavcodec/dv.c b/libavcodec/dv.c
index a7dfbdc1b23..5b4ad2337dc 100644
--- a/libavcodec/dv.c
+++ b/libavcodec/dv.c
@@ -818,6 +818,7 @@ static inline int dv_write_pack(enum dv_pack_type pack_id, DVVideoContext *c,
* compression scheme (if any).
*/
int apt = (c->sys->pix_fmt == AV_PIX_FMT_YUV420P ? 0 : 1);
+ int fs = c->picture.top_field_first ? 0x00 : 0x40;
uint8_t aspect = 0;
if ((int)(av_q2d(c->avctx->sample_aspect_ratio) * c->avctx->width / c->avctx->height * 10) >= 17) /* 16:9 */
@@ -856,7 +857,7 @@ static inline int dv_write_pack(enum dv_pack_type pack_id, DVVideoContext *c,
buf[2] = 0xc8 | /* reserved -- always b11001xxx */
aspect;
buf[3] = (1 << 7) | /* frame/field flag 1 -- frame, 0 -- field */
- (1 << 6) | /* first/second field flag 0 -- field 2, 1 -- field 1 */
+ fs | /* first/second field flag 0 -- field 2, 1 -- field 1 */
(1 << 5) | /* frame change flag 0 -- same picture as before, 1 -- different */
(1 << 4) | /* 1 - interlaced, 0 - noninterlaced */
0xc; /* reserved -- always b1100 */
--
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