unscaled memcpy variant bugfix (negative strides)

Originally committed as revision 4650 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

diff --git a/postproc/swscale.c b/postproc/swscale.c
index bfe39af..4be341d 100644 (file)
--- a/postproc/swscale.c
+++ b/postproc/swscale.c
@@ -1297,8 +1297,8 @@ static void simpleCopy(SwsContext *c, uint8_t* srcParam[], int srcStrideParam[],
                        int length=0;
 
                        /* universal length finder */
-                       while(length+c->srcW <= dstStride[0] 
-                          && length+c->srcW <= srcStride[0]) length+= c->srcW;
+                       while(length+c->srcW <= ABS(dstStride[0]) 
+                          && length+c->srcW <= ABS(srcStride[0])) length+= c->srcW;
                        ASSERT(length!=0);
 
                        for(i=0; i<srcSliceH; i++)