Move the v{Y,C}CoeffsBank vectors into the SwsContext, filling them in just

once when the scaler is initialized, instead of building them and freeing
them over and over. This gives massive performance improvements.
patch by Alan Curry, pacman*at*TheWorld*dot*com

Originally committed as revision 17589 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc

1 files changed, 25 insertions, 0 deletions

diff --git a/postproc/swscale.c b/postproc/swscale.c
index e4537f7bf2..6f9c203a2a 100644
--- a/postproc/swscale.c
+++ b/postproc/swscale.c
@@ -2110,6 +2110,25 @@ SwsContext *sws_getContext(int srcW, int srcH, int origSrcFormat, int dstW, int
 				c->chrSrcH, c->chrDstH, filterAlign, (1<<12)-4,
 				(flags&SWS_BICUBLIN) ? (flags|SWS_BILINEAR) : flags,
 				srcFilter->chrV, dstFilter->chrV, c->param);
+
+#ifdef HAVE_ALTIVEC
+		c->vYCoeffsBank = memalign (16, sizeof (vector signed short)*c->vLumFilterSize*c->dstH);
+		c->vCCoeffsBank = memalign (16, sizeof (vector signed short)*c->vChrFilterSize*c->dstH);
+
+		for (i=0;i<c->vLumFilterSize*c->dstH;i++) {
+                  int j;
+		  short *p = (short *)&c->vYCoeffsBank[i];
+		  for (j=0;j<8;j++)
+		    p[j] = c->vLumFilter[i];
+		}
+
+		for (i=0;i<c->vChrFilterSize*c->dstH;i++) {
+                  int j;
+		  short *p = (short *)&c->vCCoeffsBank[i];
+		  for (j=0;j<8;j++)
+		    p[j] = c->vChrFilter[i];
+		}
+#endif
 	}
 
 	// Calculate Buffer Sizes so that they won't run out while handling these damn slices
@@ -2644,6 +2663,12 @@ void sws_freeContext(SwsContext *c){
 	c->hLumFilter = NULL;
 	if(c->hChrFilter) free(c->hChrFilter);
 	c->hChrFilter = NULL;
+#ifdef HAVE_ALTIVEC
+	if(c->vYCoeffsBank) free(c->vYCoeffsBank);
+	c->vYCoeffsBank = NULL;
+	if(c->vCCoeffsBank) free(c->vCCoeffsBank);
+	c->vCCoeffsBank = NULL;
+#endif
 
 	if(c->vLumFilterPos) free(c->vLumFilterPos);
 	c->vLumFilterPos = NULL;