Refactor code for upcoming alpha patches.

Patch by Cédric Schieli, cschieli A gmail

Originally committed as revision 28741 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

libswscale/yuv2rgb_template.c

@@ -396,6 +396,47 @@ static inline int RENAME(yuv420_rgb24)(SwsContext *c, uint8_t* src[], int srcStr
     YUV2RGB_ENDLOOP(3)
 }
 
+#define RGB_PLANAR2PACKED32                                             \
+    /* convert RGB plane to RGB packed format,                          \
+       mm0 ->  B, mm1 -> R, mm2 -> G, mm3 -> A,                         \
+       mm4 -> GB, mm5 -> AR pixel 4-7,                                  \
+       mm6 -> GB, mm7 -> AR pixel 0-3 */                                \
+    "movq      %%mm0, %%mm6;"   /* B7 B6 B5 B4 B3 B2 B1 B0 */           \
+    "movq      %%mm1, %%mm7;"   /* R7 R6 R5 R4 R3 R2 R1 R0 */           \
+\
+    "movq      %%mm0, %%mm4;"   /* B7 B6 B5 B4 B3 B2 B1 B0 */           \
+    "movq      %%mm1, %%mm5;"   /* R7 R6 R5 R4 R3 R2 R1 R0 */           \
+\
+    "punpcklbw %%mm2, %%mm6;"   /* G3 B3 G2 B2 G1 B1 G0 B0 */           \
+    "punpcklbw %%mm3, %%mm7;"   /* A3 R3 A2 R2 A1 R1 A0 R0 */           \
+\
+    "punpcklwd %%mm7, %%mm6;"   /* A1 R1 B1 G1 A0 R0 B0 G0 */           \
+    MOVNTQ "   %%mm6, (%1);"    /* Store ARGB1 ARGB0 */                 \
+\
+    "movq      %%mm0, %%mm6;"   /* B7 B6 B5 B4 B3 B2 B1 B0 */           \
+    "punpcklbw %%mm2, %%mm6;"   /* G3 B3 G2 B2 G1 B1 G0 B0 */           \
+\
+    "punpckhwd %%mm7, %%mm6;"   /* A3 R3 G3 B3 A2 R2 B3 G2 */           \
+    MOVNTQ "   %%mm6, 8 (%1);"  /* Store ARGB3 ARGB2 */                 \
+\
+    "punpckhbw %%mm2, %%mm4;"   /* G7 B7 G6 B6 G5 B5 G4 B4 */           \
+    "punpckhbw %%mm3, %%mm5;"   /* A7 R7 A6 R6 A5 R5 A4 R4 */           \
+\
+    "punpcklwd %%mm5, %%mm4;"   /* A5 R5 B5 G5 A4 R4 B4 G4 */           \
+    MOVNTQ "   %%mm4, 16 (%1);" /* Store ARGB5 ARGB4 */                 \
+\
+    "movq      %%mm0, %%mm4;"   /* B7 B6 B5 B4 B3 B2 B1 B0 */           \
+    "punpckhbw %%mm2, %%mm4;"   /* G7 B7 G6 B6 G5 B5 G4 B4 */           \
+\
+    "punpckhwd %%mm5, %%mm4;"   /* A7 R7 G7 B7 A6 R6 B6 G6 */           \
+    MOVNTQ "   %%mm4, 24 (%1);" /* Store ARGB7 ARGB6 */                 \
+\
+    "movd 4 (%2, %0), %%mm0;"   /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */ \
+    "movd 4 (%3, %0), %%mm1;"   /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */ \
+\
+    "pxor         %%mm4, %%mm4;" /* zero mm4 */                         \
+    "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */ \
+
 static inline int RENAME(yuv420_rgb32)(SwsContext *c, uint8_t* src[], int srcStride[], int srcSliceY,
                                        int srcSliceH, uint8_t* dst[], int dstStride[]){
     int y, h_size;
@@ -405,47 +446,8 @@ static inline int RENAME(yuv420_rgb32)(SwsContext *c, uint8_t* src[], int srcStr
 
         YUV2RGB_INIT
         YUV2RGB
-        /* convert RGB plane to RGB packed format,
-           mm0 ->  B, mm1 -> R, mm2 -> G, mm3 -> 0,
-           mm4 -> GB, mm5 -> AR pixel 4-7,
-           mm6 -> GB, mm7 -> AR pixel 0-3 */
         "pxor      %%mm3, %%mm3;"   /* zero mm3 */
-
+        RGB_PLANAR2PACKED32
-        "movq      %%mm0, %%mm6;"   /* B7 B6 B5 B4 B3 B2 B1 B0 */
-        "movq      %%mm1, %%mm7;"   /* R7 R6 R5 R4 R3 R2 R1 R0 */
-
-        "movq      %%mm0, %%mm4;"   /* B7 B6 B5 B4 B3 B2 B1 B0 */
-        "movq      %%mm1, %%mm5;"   /* R7 R6 R5 R4 R3 R2 R1 R0 */
-
-        "punpcklbw %%mm2, %%mm6;"   /* G3 B3 G2 B2 G1 B1 G0 B0 */
-        "punpcklbw %%mm3, %%mm7;"   /* 00 R3 00 R2 00 R1 00 R0 */
-
-        "punpcklwd %%mm7, %%mm6;"   /* 00 R1 B1 G1 00 R0 B0 G0 */
-        MOVNTQ "   %%mm6, (%1);"    /* Store ARGB1 ARGB0 */
-
-        "movq      %%mm0, %%mm6;"   /* B7 B6 B5 B4 B3 B2 B1 B0 */
-        "punpcklbw %%mm2, %%mm6;"   /* G3 B3 G2 B2 G1 B1 G0 B0 */
-
-        "punpckhwd %%mm7, %%mm6;"   /* 00 R3 G3 B3 00 R2 B3 G2 */
-        MOVNTQ "   %%mm6, 8 (%1);"  /* Store ARGB3 ARGB2 */
-
-        "punpckhbw %%mm2, %%mm4;"   /* G7 B7 G6 B6 G5 B5 G4 B4 */
-        "punpckhbw %%mm3, %%mm5;"   /* 00 R7 00 R6 00 R5 00 R4 */
-
-        "punpcklwd %%mm5, %%mm4;"   /* 00 R5 B5 G5 00 R4 B4 G4 */
-        MOVNTQ "   %%mm4, 16 (%1);" /* Store ARGB5 ARGB4 */
-
-        "movq      %%mm0, %%mm4;"   /* B7 B6 B5 B4 B3 B2 B1 B0 */
-        "punpckhbw %%mm2, %%mm4;"   /* G7 B7 G6 B6 G5 B5 G4 B4 */
-
-        "punpckhwd %%mm5, %%mm4;"   /* 00 R7 G7 B7 00 R6 B6 G6 */
-        MOVNTQ "   %%mm4, 24 (%1);" /* Store ARGB7 ARGB6 */
-
-        "movd 4 (%2, %0), %%mm0;"   /* Load 4 Cb 00 00 00 00 u3 u2 u1 u0 */
-        "movd 4 (%3, %0), %%mm1;"   /* Load 4 Cr 00 00 00 00 v3 v2 v1 v0 */
-
-        "pxor         %%mm4, %%mm4;" /* zero mm4 */
-        "movq 8 (%5, %0, 2), %%mm6;" /* Load 8 Y Y7 Y6 Y5 Y4 Y3 Y2 Y1 Y0 */
 
     YUV2RGB_ENDLOOP(4)
 }