From 530bf8ece6f828262b211edab1b97b873569b255 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Mon, 26 Jan 2015 23:46:44 +0100
Subject: [PATCH] avfilter/vf_eq: Fix clipping code
Found-by: Christophe Gisquet <christophe.gisquet@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libavfilter/vf_eq.c | 2 +-
libavfilter/x86/vf_eq.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/libavfilter/vf_eq.c b/libavfilter/vf_eq.c
index 0c2f0cef4ef..7bbbaee2c5b 100644
--- a/libavfilter/vf_eq.c
+++ b/libavfilter/vf_eq.c
@@ -91,7 +91,7 @@ static void process_c(EQParameters *param, uint8_t *dst, int dst_stride,
for (x = 0; x < w; x++) {
pel = ((src[y * src_stride + x] * contrast) >> 12) + brightness;
- if (pel & 768)
+ if (pel & ~255)
pel = (-pel) >> 31;
dst[y * dst_stride + x] = pel;
diff --git a/libavfilter/x86/vf_eq.c b/libavfilter/x86/vf_eq.c
index cfcc18f495c..2e42cdf5ba1 100644
--- a/libavfilter/x86/vf_eq.c
+++ b/libavfilter/x86/vf_eq.c
@@ -72,7 +72,7 @@ static void process_MMX(EQParameters *param, uint8_t *dst, int dst_stride,
for (i = w&7; i; i--) {
pel = ((*src++ * contrast) >> 12) + brightness;
- if (pel & 768)
+ if (pel & ~255)
pel = (-pel) >> 31;
*dst++ = pel;
}
--
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