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

3 files changed, 28 insertions, 26 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;
diff --git a/postproc/swscale_internal.h b/postproc/swscale_internal.h
index c6611da509..b4e1dbeea1 100644
--- a/postproc/swscale_internal.h
+++ b/postproc/swscale_internal.h
@@ -154,6 +154,7 @@ typedef struct SwsContext{
   vector signed short   CGV;
   vector signed short   OY;
   vector unsigned short CSHIFT;
+  vector signed short *vYCoeffsBank, *vCCoeffsBank;
 
 #endif
 
diff --git a/postproc/yuv2rgb_altivec.c b/postproc/yuv2rgb_altivec.c
index 2d2f7766b2..dee68b2f2e 100644
--- a/postproc/yuv2rgb_altivec.c
+++ b/postproc/yuv2rgb_altivec.c
@@ -774,8 +774,6 @@ altivec_yuv2packedX (SwsContext *c,
 		       uint8_t *dest, int dstW, int dstY)
 {
   int i,j;
-  short tmp __attribute__((aligned (16)));
-  int16_t *p;
   short *f;
   vector signed short X,X0,X1,Y0,U0,V0,Y1,U1,V1,U,V;
   vector signed short R0,G0,B0,R1,G1,B1;
@@ -787,29 +785,10 @@ altivec_yuv2packedX (SwsContext *c,
   vector unsigned short SCL = vec_splat((vector unsigned short)AVV(4),0);
   unsigned long scratch[16] __attribute__ ((aligned (16)));
 
-  vector signed short *vYCoeffsBank, *vCCoeffsBank;
-
   vector signed short *YCoeffs, *CCoeffs;
 
-  vYCoeffsBank = memalign (16, sizeof (vector signed short)*lumFilterSize*c->dstH);
-  vCCoeffsBank = memalign (16, sizeof (vector signed short)*chrFilterSize*c->dstH);
-
-  for (i=0;i<lumFilterSize*c->dstH;i++) {
-    tmp = c->vLumFilter[i];
-    p = &vYCoeffsBank[i];
-    for (j=0;j<8;j++)
-      p[j] = tmp;
-  }
-
-  for (i=0;i<chrFilterSize*c->dstH;i++) {
-    tmp = c->vChrFilter[i];
-    p = &vCCoeffsBank[i];
-    for (j=0;j<8;j++)
-      p[j] = tmp;
-  }
-
-  YCoeffs = vYCoeffsBank+dstY*lumFilterSize;
-  CCoeffs = vCCoeffsBank+dstY*chrFilterSize;
+  YCoeffs = c->vYCoeffsBank+dstY*lumFilterSize;
+  CCoeffs = c->vCCoeffsBank+dstY*chrFilterSize;
 
   out = (vector unsigned char *)dest;
 
@@ -962,7 +941,4 @@ altivec_yuv2packedX (SwsContext *c,
     memcpy (&((uint32_t*)dest)[i], scratch, (dstW-i)/4);
   }
 
-  if (vYCoeffsBank) free (vYCoeffsBank);
-  if (vCCoeffsBank) free (vCCoeffsBank);
-
 }