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swscale: fix integer overflows in RGB pixel writing.
author
Mans Rullgard
<mans@mansr.com>
Sat, 17 Dec 2011 18:45:46 +0000
(18:45 +0000)
committer
Mans Rullgard
<mans@mansr.com>
Sat, 17 Dec 2011 18:59:24 +0000
(18:59 +0000)
We're shifting individual components (8-bit, unsigned) left by 24,
so making them unsigned should give the same results without the
overflow.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
libswscale/swscale.c
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diff --git
a/libswscale/swscale.c
b/libswscale/swscale.c
index
818c049
..
3ea3710
100644
(file)
--- a/
libswscale/swscale.c
+++ b/
libswscale/swscale.c
@@
-920,8
+920,8
@@
YUV2PACKED16WRAPPER(yuv2, rgb48, bgr48be, PIX_FMT_BGR48BE)
YUV2PACKED16WRAPPER(yuv2, rgb48, bgr48le, PIX_FMT_BGR48LE)
static av_always_inline void
-yuv2rgb_write(uint8_t *_dest, int i,
int Y1, int
Y2,
-
int U, int V, int A1, int
A2,
+yuv2rgb_write(uint8_t *_dest, int i,
unsigned Y1, unsigned
Y2,
+
unsigned U, unsigned V, unsigned A1, unsigned
A2,
const void *_r, const void *_g, const void *_b, int y,
enum PixelFormat target, int hasAlpha)
{