From f44d50a94c120135faeba6b4a1e5551b4397810f Mon Sep 17 00:00:00 2001
From: "Ronald S. Bultje" <rsbultje@gmail.com>
Date: Fri, 8 Jul 2011 14:54:31 -0700
Subject: swscale: fix 16-bit horizontal scaling underflow.

When using e.g. lanczos scaling, values can drop below 0, so they
should never be unsigned.
---
 libswscale/swscale.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'libswscale')

diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index 14807fdc46..a302373b85 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -1854,7 +1854,7 @@ static void hScale16_c(SwsContext *c, int16_t *_dst, int dstW, const uint8_t *_s
     for (i = 0; i < dstW; i++) {
         int j;
         int srcPos = filterPos[i];
-        unsigned int val = 0;
+        int val = 0;
 
         for (j = 0; j < filterSize; j++) {
             val += src[srcPos + j] * filter[filterSize * i + j];
-- 
cgit v1.2.3