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libswcale: PIX_FMT_BGR48LE and PIX_FMT_BGR48BE scaler implementation

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Signed-off-by: Anton Khirnov <anton@khirnov.net>
This commit is contained in:
Peter Ross
2011-03-17 21:07:18 +11:00
committed by Anton Khirnov
parent b239526873
commit 1afbae100b
12 changed files with 125 additions and 3 deletions
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57
libswscale/swscale.c
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@@ -639,6 +639,18 @@ static inline void yuv2nv12XinC(const int16_t *lumFilter, const int16_t **lumSrc
dest+=12;\
}\
break;\
case PIX_FMT_BGR48BE:\
case PIX_FMT_BGR48LE:\
func(uint8_t,0)\
((uint8_t*)dest)[ 0] = ((uint8_t*)dest)[ 1] = b[Y1];\
((uint8_t*)dest)[ 2] = ((uint8_t*)dest)[ 3] = g[Y1];\
((uint8_t*)dest)[ 4] = ((uint8_t*)dest)[ 5] = r[Y1];\
((uint8_t*)dest)[ 6] = ((uint8_t*)dest)[ 7] = b[Y2];\
((uint8_t*)dest)[ 8] = ((uint8_t*)dest)[ 9] = g[Y2];\
((uint8_t*)dest)[10] = ((uint8_t*)dest)[11] = r[Y2];\
dest+=12;\
}\
break;\
case PIX_FMT_RGBA:\
case PIX_FMT_BGRA:\
if (CONFIG_SMALL) {\
@@ -976,6 +988,49 @@ static inline void rgb48ToUV_half(uint8_t *dstU, uint8_t *dstV,
}
}
static inline void bgr48ToY(uint8_t *dst, const uint8_t *src, long width,
uint32_t *unused)
{
int i;
for (i = 0; i < width; i++) {
int b = src[i*6+0];
int g = src[i*6+2];
int r = src[i*6+4];
dst[i] = (RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
}
}
static inline void bgr48ToUV(uint8_t *dstU, uint8_t *dstV,
const uint8_t *src1, const uint8_t *src2,
long width, uint32_t *unused)
{
int i;
for (i = 0; i < width; i++) {
int b = src1[6*i + 0];
int g = src1[6*i + 2];
int r = src1[6*i + 4];
dstU[i] = (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
dstV[i] = (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1))) >> RGB2YUV_SHIFT;
}
}
static inline void bgr48ToUV_half(uint8_t *dstU, uint8_t *dstV,
const uint8_t *src1, const uint8_t *src2,
long width, uint32_t *unused)
{
int i;
for (i = 0; i < width; i++) {
int b= src1[12*i + 0] + src1[12*i + 6];
int g= src1[12*i + 2] + src1[12*i + 8];
int r= src1[12*i + 4] + src1[12*i + 10];
dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);
dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT)) >> (RGB2YUV_SHIFT+1);
}
}
#define BGR2Y(type, name, shr, shg, shb, maskr, maskg, maskb, RY, GY, BY, S)\
static inline void name(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)\
{\
@@ -1717,6 +1772,8 @@ void ff_get_unscaled_swscale(SwsContext *c)
&& srcFormat != PIX_FMT_MONOWHITE && dstFormat != PIX_FMT_MONOWHITE
&& srcFormat != PIX_FMT_RGB48LE && dstFormat != PIX_FMT_RGB48LE
&& srcFormat != PIX_FMT_RGB48BE && dstFormat != PIX_FMT_RGB48BE
&& srcFormat != PIX_FMT_BGR48LE && dstFormat != PIX_FMT_BGR48LE
&& srcFormat != PIX_FMT_BGR48BE && dstFormat != PIX_FMT_BGR48BE
&& (!needsDither || (c->flags&(SWS_FAST_BILINEAR|SWS_POINT))))
c->swScale= rgbToRgbWrapper;