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Add support for conversions from the rgb565 and rgb555 formats 

Originally committed as revision 20605 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This commit is contained in:
Luca Abeni 2006-11-02 09:01:01 +00:00
parent 949b1a13bf
commit a43fb6b37e
2 changed files with 94 additions and 1 deletions
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2
libswscale/swscale.c
View File

@ -109,7 +109,7 @@ untested special converters
#define isSupportedIn(x) ((x)==PIX_FMT_YUV420P || (x)==PIX_FMT_YUYV422 || (x)==PIX_FMT_UYVY422\
|| (x)==PIX_FMT_RGB32|| (x)==PIX_FMT_BGR24|| (x)==PIX_FMT_BGR565|| (x)==PIX_FMT_BGR555\
|| (x)==PIX_FMT_BGR32|| (x)==PIX_FMT_RGB24\
|| (x)==PIX_FMT_BGR32|| (x)==PIX_FMT_RGB24|| (x)==PIX_FMT_RGB565|| (x)==PIX_FMT_RGB555\
|| (x)==PIX_FMT_GRAY8 || (x)==PIX_FMT_YUV410P\
|| (x)==PIX_FMT_GRAY16BE || (x)==PIX_FMT_GRAY16LE\
|| (x)==PIX_FMT_YUV444P || (x)==PIX_FMT_YUV422P || (x)==PIX_FMT_YUV411P)

93
libswscale/swscale_template.c
View File

@ -2246,6 +2246,77 @@ static inline void RENAME(rgb24ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1
}
}
static inline void RENAME(rgb16ToY)(uint8_t *dst, uint8_t *src, int 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)>>(RGB2YUV_SHIFT-2)) + 16;
}
}
static inline void RENAME(rgb16ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, int width)
{
int i;
for(i=0; i<width; i++)
{
int d0= ((uint32_t*)src1)[i];
int d1= ((uint32_t*)src2)[i];
int dl= (d0&0x07E0F81F) + (d1&0x07E0F81F);
int dh= ((d0>>5)&0x07C0F83F) + ((d1>>5)&0x07C0F83F);
int dh2= (dh>>11) + (dh<<21);
int d= dh2 + dl;
int r= d&0x7F;
int b= (d>>11)&0x7F;
int g= d>>21;
dstU[i]= ((2*RU*r + GU*g + 2*BU*b)>>(RGB2YUV_SHIFT+2-2)) + 128;
dstV[i]= ((2*RV*r + GV*g + 2*BV*b)>>(RGB2YUV_SHIFT+2-2)) + 128;
}
}
static inline void RENAME(rgb15ToY)(uint8_t *dst, uint8_t *src, int 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)>>(RGB2YUV_SHIFT-3)) + 16;
}
}
static inline void RENAME(rgb15ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1, uint8_t *src2, int width)
{
int i;
for(i=0; i<width; i++)
{
int d0= ((uint32_t*)src1)[i];
int d1= ((uint32_t*)src2)[i];
int dl= (d0&0x03E07C1F) + (d1&0x03E07C1F);
int dh= ((d0>>5)&0x03E0F81F) + ((d1>>5)&0x03E0F81F);
int dh2= (dh>>11) + (dh<<21);
int d= dh2 + dl;
int g= d&0x7F;
int r= (d>>10)&0x7F;
int b= d>>21;
dstU[i]= ((RU*r + GU*g + BU*b)>>(RGB2YUV_SHIFT+2-3)) + 128;
dstV[i]= ((RV*r + GV*g + BV*b)>>(RGB2YUV_SHIFT+2-3)) + 128;
}
}
// Bilinear / Bicubic scaling
static inline void RENAME(hScale)(int16_t *dst, int dstW, uint8_t *src, int srcW, int xInc,
@ -2477,6 +2548,16 @@ static inline void RENAME(hyscale)(uint16_t *dst, long dstWidth, uint8_t *src, i
RENAME(rgb24ToY)(formatConvBuffer, src, srcW);
src= formatConvBuffer;
}
else if(srcFormat==PIX_FMT_RGB565)
{
RENAME(rgb16ToY)(formatConvBuffer, src, srcW);
src= formatConvBuffer;
}
else if(srcFormat==PIX_FMT_RGB555)
{
RENAME(rgb15ToY)(formatConvBuffer, src, srcW);
src= formatConvBuffer;
}
#ifdef HAVE_MMX
// use the new MMX scaler if the mmx2 can't be used (its faster than the x86asm one)
@ -2672,6 +2753,18 @@ inline static void RENAME(hcscale)(uint16_t *dst, long dstWidth, uint8_t *src1,
src1= formatConvBuffer;
src2= formatConvBuffer+2048;
}
else if(srcFormat==PIX_FMT_RGB565)
{
RENAME(rgb16ToUV)(formatConvBuffer, formatConvBuffer+2048, src1, src2, srcW);
src1= formatConvBuffer;
src2= formatConvBuffer+2048;
}
else if(srcFormat==PIX_FMT_RGB555)
{
RENAME(rgb15ToUV)(formatConvBuffer, formatConvBuffer+2048, src1, src2, srcW);
src1= formatConvBuffer;
src2= formatConvBuffer+2048;
}
else if(isGray(srcFormat))
{
return;