From 4fced11df73fb1921f60660b5b0f319bb4e723ec Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Wed, 22 Aug 2012 02:47:32 +0200
Subject: [PATCH] utvideoenc: optimize and simplify mangle_rgb_planes
Reviewed-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libavcodec/utvideoenc.c | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/libavcodec/utvideoenc.c b/libavcodec/utvideoenc.c
index f3ba7399cd3..95205eaac68 100644
--- a/libavcodec/utvideoenc.c
+++ b/libavcodec/utvideoenc.c
@@ -196,16 +196,13 @@ static void mangle_rgb_planes(uint8_t *src, int step, int stride, int width,
int height)
{
int i, j;
- uint8_t r, g, b;
+ unsigned g;
for (j = 0; j < height; j++) {
for (i = 0; i < width * step; i += step) {
- r = src[i];
- g = src[i + 1];
- b = src[i + 2];
-
- src[i] = r - g + 0x80;
- src[i + 2] = b - g + 0x80;
+ g = src[i + 1] + 0x80;
+ src[i] -= g;
+ src[i + 2] -= g;
}
src += stride;
}
--
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