swscale: More accurate rounding in YSCALE_YUV_2_PACKEDX_FULL_C()

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

swscale: More accurate rounding in YSCALE_YUV_2_PACKEDX_FULL_C()
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
201549d1 · Michael Niedermayer · f6a8ce98 · 201549d1
Commit 201549d1 authored Jun 01, 2011 by Michael Niedermayer
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swscale.c libswscale/swscale.c +3 -3

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--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@@ -557,9 +557,9 @@ static inline void yuv2nv12XinC(const int16_t *lumFilter, const int16_t **lumSrc
 #define YSCALE_YUV_2_PACKEDX_FULL_C(rnd,alpha) \
    for (i=0; i<dstW; i++) {\
        int j;\
-        int Y = 0;\
-        int U = -128<<19;\
-        int V = -128<<19;\
+        int Y = 1<<9;\
+        int U = (1<<9)-(128<<19);\
+        int V = (1<<9)-(128<<19);\
        int av_unused A;\
        int R,G,B;\
        \