From f48b12e0a6a14c4f176ae0c9527de4cea456d6a2 Mon Sep 17 00:00:00 2001
From: "Ronald S. Bultje" <rsbultje@gmail.com>
Date: Sat, 15 Oct 2011 16:00:42 -0700
Subject: swscale: update altivec yuv2planeX asm to new per-plane API.

---
 libswscale/ppc/swscale_altivec.c | 94 ++++++----------------------------------
 1 file changed, 13 insertions(+), 81 deletions(-)

(limited to 'libswscale/ppc')

diff --git a/libswscale/ppc/swscale_altivec.c b/libswscale/ppc/swscale_altivec.c
index 3bf9458296..87059d9430 100644
--- a/libswscale/ppc/swscale_altivec.c
+++ b/libswscale/ppc/swscale_altivec.c
@@ -94,34 +94,29 @@ altivec_packIntArrayToCharArray(int *val, uint8_t* dest, int dstW)
 
 //FIXME remove the usage of scratch buffers.
 static void
-yuv2yuvX_altivec_real(SwsContext *c,
-                      const int16_t *lumFilter, const int16_t **lumSrc,
-                      int lumFilterSize, const int16_t *chrFilter,
-                      const int16_t **chrUSrc, const int16_t **chrVSrc,
-                      int chrFilterSize, const int16_t **alpSrc,
-                      uint8_t *dest[4], int dstW, int chrDstW)
+yuv2planeX_altivec(const int16_t *filter, int filterSize,
+                   const int16_t **src, uint8_t *dest, int dstW,
+                   const uint8_t *dither, int offset)
 {
-    uint8_t *yDest = dest[0], *uDest = dest[1], *vDest = dest[2];
-    const uint8_t *lumDither = c->lumDither8, *chrDither = c->chrDither8;
     register int i, j;
     {
         DECLARE_ALIGNED(16, int, val)[dstW];
 
         for (i=0; i<dstW; i++)
-            val[i] = lumDither[i & 7] << 12;
+            val[i] = dither[(i + offset) & 7] << 12;
 
-        for (j = 0; j < lumFilterSize; j++) {
-            vector signed short l1, vLumFilter = vec_ld(j << 1, lumFilter);
-            vector unsigned char perm, perm0 = vec_lvsl(j << 1, lumFilter);
+        for (j = 0; j < filterSize; j++) {
+            vector signed short l1, vLumFilter = vec_ld(j << 1, filter);
+            vector unsigned char perm, perm0 = vec_lvsl(j << 1, filter);
             vLumFilter = vec_perm(vLumFilter, vLumFilter, perm0);
             vLumFilter = vec_splat(vLumFilter, 0); // lumFilter[j] is loaded 8 times in vLumFilter
 
-            perm = vec_lvsl(0, lumSrc[j]);
-            l1 = vec_ld(0, lumSrc[j]);
+            perm = vec_lvsl(0, src[j]);
+            l1 = vec_ld(0, src[j]);
 
             for (i = 0; i < (dstW - 7); i+=8) {
                 int offset = i << 2;
-                vector signed short l2 = vec_ld((i << 1) + 16, lumSrc[j]);
+                vector signed short l2 = vec_ld((i << 1) + 16, src[j]);
 
                 vector signed int v1 = vec_ld(offset, val);
                 vector signed int v2 = vec_ld(offset + 16, val);
@@ -143,73 +138,10 @@ yuv2yuvX_altivec_real(SwsContext *c,
                 l1 = l2;
             }
             for ( ; i < dstW; i++) {
-                val[i] += lumSrc[j][i] * lumFilter[j];
+                val[i] += src[j][i] * filter[j];
             }
         }
-        altivec_packIntArrayToCharArray(val, yDest, dstW);
-    }
-    if (uDest != 0) {
-        DECLARE_ALIGNED(16, int, u)[chrDstW];
-        DECLARE_ALIGNED(16, int, v)[chrDstW];
-
-        for (i=0; i<chrDstW; i++) {
-            u[i] = chrDither[i & 7] << 12;
-            v[i] = chrDither[(i + 3) & 7] << 12;
-        }
-
-        for (j = 0; j < chrFilterSize; j++) {
-            vector signed short l1, l1_V, vChrFilter = vec_ld(j << 1, chrFilter);
-            vector unsigned char perm, perm0 = vec_lvsl(j << 1, chrFilter);
-            vChrFilter = vec_perm(vChrFilter, vChrFilter, perm0);
-            vChrFilter = vec_splat(vChrFilter, 0); // chrFilter[j] is loaded 8 times in vChrFilter
-
-            perm = vec_lvsl(0, chrUSrc[j]);
-            l1 = vec_ld(0, chrUSrc[j]);
-            l1_V = vec_ld(0, chrVSrc[j]);
-
-            for (i = 0; i < (chrDstW - 7); i+=8) {
-                int offset = i << 2;
-                vector signed short l2 = vec_ld((i << 1) + 16, chrUSrc[j]);
-                vector signed short l2_V = vec_ld((i << 1) + 16, chrVSrc[j]);
-
-                vector signed int v1 = vec_ld(offset, u);
-                vector signed int v2 = vec_ld(offset + 16, u);
-                vector signed int v1_V = vec_ld(offset, v);
-                vector signed int v2_V = vec_ld(offset + 16, v);
-
-                vector signed short ls = vec_perm(l1, l2, perm); // chrUSrc[j][i] ... chrUSrc[j][i+7]
-                vector signed short ls_V = vec_perm(l1_V, l2_V, perm); // chrVSrc[j][i] ... chrVSrc[j][i]
-
-                vector signed int i1 = vec_mule(vChrFilter, ls);
-                vector signed int i2 = vec_mulo(vChrFilter, ls);
-                vector signed int i1_V = vec_mule(vChrFilter, ls_V);
-                vector signed int i2_V = vec_mulo(vChrFilter, ls_V);
-
-                vector signed int vf1 = vec_mergeh(i1, i2);
-                vector signed int vf2 = vec_mergel(i1, i2); // chrUSrc[j][i] * chrFilter[j] ... chrUSrc[j][i+7] * chrFilter[j]
-                vector signed int vf1_V = vec_mergeh(i1_V, i2_V);
-                vector signed int vf2_V = vec_mergel(i1_V, i2_V); // chrVSrc[j][i] * chrFilter[j] ... chrVSrc[j][i+7] * chrFilter[j]
-
-                vector signed int vo1 = vec_add(v1, vf1);
-                vector signed int vo2 = vec_add(v2, vf2);
-                vector signed int vo1_V = vec_add(v1_V, vf1_V);
-                vector signed int vo2_V = vec_add(v2_V, vf2_V);
-
-                vec_st(vo1, offset, u);
-                vec_st(vo2, offset + 16, u);
-                vec_st(vo1_V, offset, v);
-                vec_st(vo2_V, offset + 16, v);
-
-                l1 = l2;
-                l1_V = l2_V;
-            }
-            for ( ; i < chrDstW; i++) {
-                u[i] += chrUSrc[j][i] * chrFilter[j];
-                v[i] += chrVSrc[j][i] * chrFilter[j];
-            }
-        }
-        altivec_packIntArrayToCharArray(u, uDest, chrDstW);
-        altivec_packIntArrayToCharArray(v, vDest, chrDstW);
+        altivec_packIntArrayToCharArray(val, dest, dstW);
     }
 }
 
@@ -405,7 +337,7 @@ void ff_sws_init_swScale_altivec(SwsContext *c)
     if (!is16BPS(dstFormat) && !is9_OR_10BPS(dstFormat) &&
         dstFormat != PIX_FMT_NV12 && dstFormat != PIX_FMT_NV21 &&
         !c->alpPixBuf) {
-//        c->yuv2yuvX     = yuv2yuvX_altivec_real;
+        c->yuv2planeX = yuv2planeX_altivec;
     }
 
     /* The following list of supported dstFormat values should
-- 
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