From: "Ronald S. Bultje" <[email protected]>
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: [email protected]
---
libswscale/swscale.c | 6 +++---
1 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/libswscale/swscale.c b/libswscale/swscale.c
index b231302..bd909bf 100644
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -407,9 +407,9 @@ static int swScale(SwsContext *c, const uint8_t* src[],
(CONFIG_SWSCALE_ALPHA && alpPixBuf) ? dst[3] + dstStride[3] * dstY
: NULL,
};
- const int firstLumSrcY= vLumFilterPos[dstY]; //First line needed as
input
- const int firstLumSrcY2= vLumFilterPos[FFMIN(dstY |
((1<<c->chrDstVSubSample) - 1), dstH-1)];
- const int firstChrSrcY= vChrFilterPos[chrDstY]; //First line needed as
input
+ const int firstLumSrcY= FFMAX(1 - vLumFilterSize,
vLumFilterPos[dstY]); //First line needed as input
+ const int firstLumSrcY2= FFMAX(1 - vLumFilterSize,
vLumFilterPos[FFMIN(dstY | ((1<<c->chrDstVSubSample) - 1), dstH-1)]);
+ const int firstChrSrcY= FFMAX(1 - vChrFilterSize,
vChrFilterPos[chrDstY]); //First line needed as input
// Last line needed as input
int lastLumSrcY = FFMIN(c->srcH, firstLumSrcY + vLumFilterSize) -
1;
--
1.7.7.4
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