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faster bgr16 input

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Originally committed as revision 4580 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc
This commit is contained in:
Michael Niedermayer 2002-02-08 01:24:02 +00:00
parent 6af250ea5c
commit 5bb9d9d8e8
1 changed files with 15 additions and 2 deletions
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17
postproc/swscale_template.c
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@ -1685,7 +1685,20 @@ static inline void RENAME(bgr16ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1
int i;
for(i=0; i<width; i++)
{
//FIXME optimize
#if 1
int d0= le2me_32( ((uint32_t*)src1)[i] );
int d1= le2me_32( ((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 b= d&0x7F;
int r= (d>>11)&0x7F;
int g= d>>21;
#else
int d0= src1[i*4] + (src1[i*4+1]<<8);
int b0= d0&0x1F;
int g0= (d0>>5)&0x3F;
@ -1709,7 +1722,7 @@ static inline void RENAME(bgr16ToUV)(uint8_t *dstU, uint8_t *dstV, uint8_t *src1
int b= b0 + b1 + b2 + b3;
int g= g0 + g1 + g2 + g3;
int r= r0 + r1 + r2 + r3;
#endif
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;
}