swscale: fix another yuv range conversion overflow in 16bit scaling.

(cherry picked from commit 81cc7d0bd1)
14 years ago · afb9d4e8f1
parent ebb0d60353
commit afb9d4e8f1
1 changed files with 1 additions and 1 deletions
--- a/libswscale/swscale.c
+++ b/libswscale/swscale.c
@ -2001,7 +2001,7 @@ static void lumRangeToJpeg16_c(int16_t *_dst, int width)
    int i;
    int32_t *dst = (int32_t *) _dst;
    for (i = 0; i < width; i++)
-        dst[i] = (FFMIN(dst[i],30189<<4)*19077 - (39057361<<4))>>14;
+        dst[i] = (FFMIN(dst[i],30189<<4)*4769 - (39057361<<2))>>12;
 }
 static void lumRangeFromJpeg16_c(int16_t *_dst, int width)
 {