Factorize rgb/bgr15/16/32->Y by using the preprocessor.

Originally committed as revision 27565 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale

libswscale/swscale_template.c

@@ -1843,19 +1843,28 @@ static inline void RENAME(uyvyToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1,
     assert(src1 == src2);
 }
 
-static inline void RENAME(bgr32ToY)(uint8_t *dst, uint8_t *src, long width)
-{
-    int i;
-    for (i=0; i<width; i++)
-    {
-        int b=  ((uint32_t*)src)[i]&0xFF;
-        int g= (((uint32_t*)src)[i]>>8)&0xFF;
-        int r= (((uint32_t*)src)[i]>>16)&0xFF;
-
-        dst[i]= ((RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
-    }
+#define BGR2Y(type, name, shr, shg, shb, maskr, maskg, maskb, RY, GY, BY, S)\
+static inline void RENAME(name)(uint8_t *dst, uint8_t *src, long width)\
+{\
+    int i;\
+    for (i=0; i<width; i++)\
+    {\
+        int b= (((type*)src)[i]>>shb)&maskb;\
+        int g= (((type*)src)[i]>>shg)&maskg;\
+        int r= (((type*)src)[i]>>shr)&maskr;\
+\
+        dst[i]= (((RY)*r + (GY)*g + (BY)*b + (33<<((S)-1)))>>(S));\
+    }\
 }
 
+BGR2Y(uint32_t, bgr32ToY,16, 0, 0, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)
+BGR2Y(uint32_t, rgb32ToY, 0, 0,16, 0x00FF, 0xFF00, 0x00FF, RY<< 8, GY   , BY<< 8, RGB2YUV_SHIFT+8)
+BGR2Y(uint16_t, bgr16ToY, 0, 0, 0, 0x001F, 0x07E0, 0xF800, RY<<11, GY<<5, BY    , RGB2YUV_SHIFT+8)
+BGR2Y(uint16_t, bgr15ToY, 0, 0, 0, 0x001F, 0x03E0, 0x7C00, RY<<10, GY<<5, BY    , RGB2YUV_SHIFT+7)
+BGR2Y(uint16_t, rgb16ToY, 0, 0, 0, 0xF800, 0x07E0, 0x001F, RY    , GY<<5, BY<<11, RGB2YUV_SHIFT+8)
+BGR2Y(uint16_t, rgb15ToY, 0, 0, 0, 0x7C00, 0x03E0, 0x001F, RY    , GY<<5, BY<<10, RGB2YUV_SHIFT+7)
+
+
 static inline void RENAME(bgr32ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, long width)
 {
     int i;
@@ -2052,20 +2061,6 @@ static inline void RENAME(bgr24ToUV_half)(uint8_t *dstU, uint8_t *dstV, uint8_t
     assert(src1 == src2);
 }
 
-static inline void RENAME(rgb16ToY)(uint8_t *dst, uint8_t *src, long width)
-{
-    int i;
-    for (i=0; i<width; i++)
-    {
-        int d= ((uint16_t*)src)[i];
-        int b= d&0x1F;
-        int g= (d>>5)&0x3F;
-        int r= (d>>11)&0x1F;
-
-        dst[i]= (2*RY*r + GY*g + 2*BY*b + (33<<(RGB2YUV_SHIFT-3)))>>(RGB2YUV_SHIFT-2);
-    }
-}
-
 static inline void RENAME(rgb16ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, long width)
 {
     int i;
@@ -2104,20 +2099,6 @@ static inline void RENAME(rgb16ToUV_half)(uint8_t *dstU, uint8_t *dstV, uint8_t
     }
 }
 
-static inline void RENAME(rgb15ToY)(uint8_t *dst, uint8_t *src, long width)
-{
-    int i;
-    for (i=0; i<width; i++)
-    {
-        int d= ((uint16_t*)src)[i];
-        int b= d&0x1F;
-        int g= (d>>5)&0x1F;
-        int r= (d>>10)&0x1F;
-
-        dst[i]= (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-4)))>>(RGB2YUV_SHIFT-3);
-    }
-}
-
 static inline void RENAME(rgb15ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, long width)
 {
     int i;
@@ -2156,20 +2137,6 @@ static inline void RENAME(rgb15ToUV_half)(uint8_t *dstU, uint8_t *dstV, uint8_t
     }
 }
 
-
-static inline void RENAME(rgb32ToY)(uint8_t *dst, uint8_t *src, long width)
-{
-    int i;
-    for (i=0; i<width; i++)
-    {
-        int r=  ((uint32_t*)src)[i]&0xFF;
-        int g= (((uint32_t*)src)[i]>>8)&0xFF;
-        int b= (((uint32_t*)src)[i]>>16)&0xFF;
-
-        dst[i]= ((RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
-    }
-}
-
 static inline void RENAME(rgb32ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, long width)
 {
     int i;
@@ -2255,20 +2222,6 @@ static inline void RENAME(rgb24ToUV_half)(uint8_t *dstU, uint8_t *dstV, uint8_t
     }
 }
 
-static inline void RENAME(bgr16ToY)(uint8_t *dst, uint8_t *src, long width)
-{
-    int i;
-    for (i=0; i<width; i++)
-    {
-        int d= ((uint16_t*)src)[i];
-        int r= d&0x1F;
-        int g= (d>>5)&0x3F;
-        int b= (d>>11)&0x1F;
-
-        dst[i]= (2*RY*r + GY*g + 2*BY*b + (33<<(RGB2YUV_SHIFT-3)))>>(RGB2YUV_SHIFT-2);
-    }
-}
-
 static inline void RENAME(bgr16ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, long width)
 {
     int i;
@@ -2304,20 +2257,6 @@ static inline void RENAME(bgr16ToUV_half)(uint8_t *dstU, uint8_t *dstV, uint8_t
     }
 }
 
-static inline void RENAME(bgr15ToY)(uint8_t *dst, uint8_t *src, long width)
-{
-    int i;
-    for (i=0; i<width; i++)
-    {
-        int d= ((uint16_t*)src)[i];
-        int r= d&0x1F;
-        int g= (d>>5)&0x1F;
-        int b= (d>>10)&0x1F;
-
-        dst[i]= (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-4)))>>(RGB2YUV_SHIFT-3);
-    }
-}
-
 static inline void RENAME(bgr15ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, long width)
 {
     int i;