From 48f7f29f52f3eeff2b200943834ac1e7461536e7 Mon Sep 17 00:00:00 2001
From: Baptiste Coudurier <baptiste.coudurier@gmail.com>
Date: Sun, 26 Sep 2010 00:56:26 +0000
Subject: [PATCH] In yadif filter, use current frame when previous is missing,
better results for the first frame
Originally committed as revision 25202 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavfilter/vf_yadif.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/libavfilter/vf_yadif.c b/libavfilter/vf_yadif.c
index 96cf73a3772..fe4cb9601ae 100644
--- a/libavfilter/vf_yadif.c
+++ b/libavfilter/vf_yadif.c
@@ -197,13 +197,12 @@ static void start_frame(AVFilterLink *link, AVFilterBufferRef *picref)
yadif->cur = yadif->next;
yadif->next = picref;
- if (!yadif->prev)
- yadif->prev = avfilter_get_video_buffer(link, AV_PERM_WRITE | AV_PERM_PRESERVE |
- AV_PERM_REUSE, link->w, link->h);
-
if(!yadif->cur)
return;
+ if (!yadif->prev)
+ yadif->prev = avfilter_ref_buffer(yadif->cur, AV_PERM_READ);
+
yadif->out = avfilter_get_video_buffer(ctx->outputs[0], AV_PERM_WRITE | AV_PERM_PRESERVE |
AV_PERM_REUSE, link->w, link->h);
--
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