swscale: split yuv2packedX_altivec in smaller functions.

This will likely lead to a considerable performance boost,
since it removes a branch from the inner loop. Part of the
Great Evil Plan to simplify swscale.

1 files changed, 24 insertions, 4 deletions

diff --git a/libswscale/ppc/yuv2rgb_altivec.c b/libswscale/ppc/yuv2rgb_altivec.c
index 476db22489..73c02e9494 100644
--- a/libswscale/ppc/yuv2rgb_altivec.c
+++ b/libswscale/ppc/yuv2rgb_altivec.c
@@ -626,13 +626,13 @@ void ff_yuv2rgb_init_tables_altivec(SwsContext *c, const int inv_table[4], int b
 }
 
 
-void
+static av_always_inline void
 ff_yuv2packedX_altivec(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,
-                       int dstW, int dstY)
+                       int dstW, int dstY, enum PixelFormat target)
 {
     int i,j;
     vector signed short X,X0,X1,Y0,U0,V0,Y1,U1,V1,U,V;
@@ -706,7 +706,7 @@ ff_yuv2packedX_altivec(SwsContext *c, const int16_t *lumFilter,
         G  = vec_packclp (G0,G1);
         B  = vec_packclp (B0,B1);
 
-        switch(c->dstFormat) {
+        switch(target) {
         case PIX_FMT_ABGR:  out_abgr  (R,G,B,out); break;
         case PIX_FMT_BGRA:  out_bgra  (R,G,B,out); break;
         case PIX_FMT_RGBA:  out_rgba  (R,G,B,out); break;
@@ -785,7 +785,7 @@ ff_yuv2packedX_altivec(SwsContext *c, const int16_t *lumFilter,
         B  = vec_packclp (B0,B1);
 
         nout = (vector unsigned char *)scratch;
-        switch(c->dstFormat) {
+        switch(target) {
         case PIX_FMT_ABGR:  out_abgr  (R,G,B,nout); break;
         case PIX_FMT_BGRA:  out_bgra  (R,G,B,nout); break;
         case PIX_FMT_RGBA:  out_rgba  (R,G,B,nout); break;
@@ -803,3 +803,23 @@ ff_yuv2packedX_altivec(SwsContext *c, const int16_t *lumFilter,
     }
 
 }
+
+#define YUV2PACKEDX_WRAPPER(suffix, pixfmt) \
+void ff_yuv2 ## suffix ## _X_altivec(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, \
+                            int dstW, int dstY) \
+{ \
+    ff_yuv2packedX_altivec(c, lumFilter, lumSrc, lumFilterSize, \
+                           chrFilter, chrUSrc, chrVSrc, chrFilterSize, \
+                           alpSrc, dest, dstW, dstY, pixfmt); \
+}
+
+YUV2PACKEDX_WRAPPER(abgr,  PIX_FMT_ABGR);
+YUV2PACKEDX_WRAPPER(bgra,  PIX_FMT_BGRA);
+YUV2PACKEDX_WRAPPER(argb,  PIX_FMT_ARGB);
+YUV2PACKEDX_WRAPPER(rgba,  PIX_FMT_RGBA);
+YUV2PACKEDX_WRAPPER(rgb24, PIX_FMT_RGB24);
+YUV2PACKEDX_WRAPPER(bgr24, PIX_FMT_BGR24);