From 09ab885975982a9605c26b285f4409bf3383990a Mon Sep 17 00:00:00 2001
From: Vitor Sessak <vitor1001@gmail.com>
Date: Fri, 5 Mar 2010 20:04:24 +0000
Subject: [PATCH] Round correctly chroma picture height.

Fix issue 956.

Originally committed as revision 22223 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/imgconvert.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/libavcodec/imgconvert.c b/libavcodec/imgconvert.c
index e1dde8146d..0fb2fe6c46 100644
--- a/libavcodec/imgconvert.c
+++ b/libavcodec/imgconvert.c
@@ -760,8 +760,8 @@ int avpicture_layout(const AVPicture* src, enum PixelFormat pix_fmt, int width,
 
     for (i=0; i<data_planes; i++) {
         if (i == 1) {
-            w = ((width >> desc->log2_chroma_w) * pf->depth + 7) / 8;
-            h = height >> desc->log2_chroma_h;
+            w = (- ((-width) >> desc->log2_chroma_w) * pf->depth + 7) / 8;
+            h = -((-height) >> desc->log2_chroma_h);
             if (pix_fmt == PIX_FMT_NV12 || pix_fmt == PIX_FMT_NV21)
                 w <<= 1;
         } else if (i == 3) {
-- 
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