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interpolate chrominance for every second line in the 1:1 vertical scale function

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Originally committed as revision 2570 to svn://svn.mplayerhq.hu/mplayer/trunk/postproc
This commit is contained in:
Michael Niedermayer
2001-10-30 21:04:42 +00:00
parent 1faf086709
commit 497d4f9932
2 changed files with 308 additions and 84 deletions
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196
postproc/swscale.c
View File

@ -249,8 +249,60 @@ static int canMMX2BeUsed=0;
"pmulhw ugCoeff, %%mm3 \n\t"\ "pmulhw ugCoeff, %%mm3 \n\t"\
"pmulhw vgCoeff, %%mm4 \n\t"\ "pmulhw vgCoeff, %%mm4 \n\t"\
/* mm2=(U-128)8, mm3=ug, mm4=vg mm5=(V-128)8 */\ /* mm2=(U-128)8, mm3=ug, mm4=vg mm5=(V-128)8 */\
"movq (%1, %%eax, 2), %%mm1 \n\t" /*buf0[eax]*/\ "movq (%0, %%eax, 2), %%mm1 \n\t" /*buf0[eax]*/\
"movq 8(%1, %%eax, 2), %%mm7 \n\t" /*buf0[eax]*/\ "movq 8(%0, %%eax, 2), %%mm7 \n\t" /*buf0[eax]*/\
"psraw $4, %%mm1 \n\t" /* buf0[eax] - buf1[eax] >>4*/\
"psraw $4, %%mm7 \n\t" /* buf0[eax] - buf1[eax] >>4*/\
"pmulhw ubCoeff, %%mm2 \n\t"\
"pmulhw vrCoeff, %%mm5 \n\t"\
"psubw w80, %%mm1 \n\t" /* 8(Y-16)*/\
"psubw w80, %%mm7 \n\t" /* 8(Y-16)*/\
"pmulhw yCoeff, %%mm1 \n\t"\
"pmulhw yCoeff, %%mm7 \n\t"\
/* mm1= Y1, mm2=ub, mm3=ug, mm4=vg mm5=vr, mm7=Y2 */\
"paddw %%mm3, %%mm4 \n\t"\
"movq %%mm2, %%mm0 \n\t"\
"movq %%mm5, %%mm6 \n\t"\
"movq %%mm4, %%mm3 \n\t"\
"punpcklwd %%mm2, %%mm2 \n\t"\
"punpcklwd %%mm5, %%mm5 \n\t"\
"punpcklwd %%mm4, %%mm4 \n\t"\
"paddw %%mm1, %%mm2 \n\t"\
"paddw %%mm1, %%mm5 \n\t"\
"paddw %%mm1, %%mm4 \n\t"\
"punpckhwd %%mm0, %%mm0 \n\t"\
"punpckhwd %%mm6, %%mm6 \n\t"\
"punpckhwd %%mm3, %%mm3 \n\t"\
"paddw %%mm7, %%mm0 \n\t"\
"paddw %%mm7, %%mm6 \n\t"\
"paddw %%mm7, %%mm3 \n\t"\
/* mm0=B1, mm2=B2, mm3=G2, mm4=G1, mm5=R1, mm6=R2 */\
"packuswb %%mm0, %%mm2 \n\t"\
"packuswb %%mm6, %%mm5 \n\t"\
"packuswb %%mm3, %%mm4 \n\t"\
"pxor %%mm7, %%mm7 \n\t"
// do vertical chrominance interpolation
#define YSCALEYUV2RGB1b \
"xorl %%eax, %%eax \n\t"\
"1: \n\t"\
"movq (%2, %%eax), %%mm2 \n\t" /* uvbuf0[eax]*/\
"movq (%3, %%eax), %%mm3 \n\t" /* uvbuf1[eax]*/\
"movq 4096(%2, %%eax), %%mm5 \n\t" /* uvbuf0[eax+2048]*/\
"movq 4096(%3, %%eax), %%mm4 \n\t" /* uvbuf1[eax+2048]*/\
"paddw %%mm2, %%mm3 \n\t"\
"paddw %%mm5, %%mm4 \n\t"\
"psraw $5, %%mm3 \n\t" /* uvbuf0[eax] - uvbuf1[eax] >>4*/\
"psraw $5, %%mm4 \n\t" /* uvbuf0[eax+2048] - uvbuf1[eax+2048] >>4*/\
"psubw w400, %%mm3 \n\t" /* (U-128)8*/\
"psubw w400, %%mm4 \n\t" /* (V-128)8*/\
"movq %%mm3, %%mm2 \n\t" /* (U-128)8*/\
"movq %%mm4, %%mm5 \n\t" /* (V-128)8*/\
"pmulhw ugCoeff, %%mm3 \n\t"\
"pmulhw vgCoeff, %%mm4 \n\t"\
/* mm2=(U-128)8, mm3=ug, mm4=vg mm5=(V-128)8 */\
"movq (%0, %%eax, 2), %%mm1 \n\t" /*buf0[eax]*/\
"movq 8(%0, %%eax, 2), %%mm7 \n\t" /*buf0[eax]*/\
"psraw $4, %%mm1 \n\t" /* buf0[eax] - buf1[eax] >>4*/\ "psraw $4, %%mm1 \n\t" /* buf0[eax] - buf1[eax] >>4*/\
"psraw $4, %%mm7 \n\t" /* buf0[eax] - buf1[eax] >>4*/\ "psraw $4, %%mm7 \n\t" /* buf0[eax] - buf1[eax] >>4*/\
"pmulhw ubCoeff, %%mm2 \n\t"\ "pmulhw ubCoeff, %%mm2 \n\t"\
@ -803,6 +855,9 @@ static inline void yuv2rgb1(uint16_t *buf0, uint16_t *buf1, uint16_t *uvbuf0, ui
return; return;
} }
#ifdef HAVE_MMX #ifdef HAVE_MMX
if( yalpha > 2048 ) buf0 = buf1;
if( uvalpha < 2048 ) // note this is not correct (shifts chrominance by 0.5 pixels) but its a bit faster
{
if(dstbpp == 32) if(dstbpp == 32)
{ {
asm volatile( asm volatile(
@ -856,53 +911,110 @@ static inline void yuv2rgb1(uint16_t *buf0, uint16_t *buf1, uint16_t *uvbuf0, ui
: "%eax" : "%eax"
); );
} }
#else }
//FIXME unroll C loop and dont recalculate UV else
asm volatile ("\n\t"::: "memory"); {
if(dstbpp == 32)
if(dstbpp==32 || dstbpp==24)
{ {
for(i=0;i<dstw;i++){ asm volatile(
// vertical linear interpolation && yuv2rgb in a single step: YSCALEYUV2RGB1b
int Y=yuvtab_2568[buf0[i]>>7]; WRITEBGR32
int U=((uvbuf0[i/2]*uvalpha1+uvbuf1[i/2]*uvalpha)>>19); :: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),
int V=((uvbuf0[i/2+2048]*uvalpha1+uvbuf1[i/2+2048]*uvalpha)>>19); "m" (yalpha1), "m" (uvalpha1)
dest[0]=clip_table[((Y + yuvtab_40cf[U]) >>13)]; : "%eax"
dest[1]=clip_table[((Y + yuvtab_1a1e[V] + yuvtab_0c92[U]) >>13)]; );
dest[2]=clip_table[((Y + yuvtab_3343[V]) >>13)];
dest+=dstbpp>>3;
}
} }
else if(dstbpp==16) else if(dstbpp==24)
{ {
for(i=0;i<dstw;i++){ asm volatile(
// vertical linear interpolation && yuv2rgb in a single step: YSCALEYUV2RGB1b
int Y=yuvtab_2568[buf0[i]>>7]; WRITEBGR24
int U=((uvbuf0[i/2]*uvalpha1+uvbuf1[i/2]*uvalpha)>>19); :: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),
int V=((uvbuf0[i/2+2048]*uvalpha1+uvbuf1[i/2+2048]*uvalpha)>>19); "m" (yalpha1), "m" (uvalpha1)
: "%eax", "%ebx"
((uint16_t*)dest)[0] = );
(clip_table[(Y + yuvtab_40cf[U]) >>13]>>3) |
((clip_table[(Y + yuvtab_1a1e[V] + yuvtab_0c92[U]) >>13]<<3)&0x07E0) |
((clip_table[(Y + yuvtab_3343[V]) >>13]<<8)&0xF800);
dest+=2;
}
} }
else if(dstbpp==15) else if(dstbpp==15)
{ {
for(i=0;i<dstw;i++){ asm volatile(
// vertical linear interpolation && yuv2rgb in a single step: YSCALEYUV2RGB1b
int Y=yuvtab_2568[buf0[i]>>7]; /* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
int U=((uvbuf0[i/2]*uvalpha1+uvbuf1[i/2]*uvalpha)>>19); #ifdef DITHER1XBPP
int V=((uvbuf0[i/2+2048]*uvalpha1+uvbuf1[i/2+2048]*uvalpha)>>19); "paddusb b16Dither, %%mm2 \n\t"
"paddusb b16Dither, %%mm4 \n\t"
((uint16_t*)dest)[0] = "paddusb b16Dither, %%mm5 \n\t"
(clip_table[(Y + yuvtab_40cf[U]) >>13]>>3) | #endif
((clip_table[(Y + yuvtab_1a1e[V] + yuvtab_0c92[U]) >>13]<<2)&0x03E0) | WRITEBGR15
((clip_table[(Y + yuvtab_3343[V]) >>13]<<7)&0x7C00); :: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),
dest+=2; "m" (yalpha1), "m" (uvalpha1)
} : "%eax"
);
} }
else if(dstbpp==16)
{
asm volatile(
YSCALEYUV2RGB1b
/* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
#ifdef DITHER1XBPP
"paddusb g16Dither, %%mm2 \n\t"
"paddusb b16Dither, %%mm4 \n\t"
"paddusb b16Dither, %%mm5 \n\t"
#endif
WRITEBGR16
:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),
"m" (yalpha1), "m" (uvalpha1)
: "%eax"
);
}
}
#else
//FIXME unroll C loop and dont recalculate UV
asm volatile ("\n\t"::: "memory");
if(dstbpp==32 || dstbpp==24)
{
for(i=0;i<dstw;i++){
// vertical linear interpolation && yuv2rgb in a single step:
int Y=yuvtab_2568[buf0[i]>>7];
int U=((uvbuf0[i/2]*uvalpha1+uvbuf1[i/2]*uvalpha)>>19);
int V=((uvbuf0[i/2+2048]*uvalpha1+uvbuf1[i/2+2048]*uvalpha)>>19);
dest[0]=clip_table[((Y + yuvtab_40cf[U]) >>13)];
dest[1]=clip_table[((Y + yuvtab_1a1e[V] + yuvtab_0c92[U]) >>13)];
dest[2]=clip_table[((Y + yuvtab_3343[V]) >>13)];
dest+=dstbpp>>3;
}
}
else if(dstbpp==16)
{
for(i=0;i<dstw;i++){
// vertical linear interpolation && yuv2rgb in a single step:
int Y=yuvtab_2568[buf0[i]>>7];
int U=((uvbuf0[i/2]*uvalpha1+uvbuf1[i/2]*uvalpha)>>19);
int V=((uvbuf0[i/2+2048]*uvalpha1+uvbuf1[i/2+2048]*uvalpha)>>19);
((uint16_t*)dest)[0] =
(clip_table[(Y + yuvtab_40cf[U]) >>13]>>3) |
((clip_table[(Y + yuvtab_1a1e[V] + yuvtab_0c92[U]) >>13]<<3)&0x07E0) |
((clip_table[(Y + yuvtab_3343[V]) >>13]<<8)&0xF800);
dest+=2;
}
}
else if(dstbpp==15)
{
for(i=0;i<dstw;i++){
// vertical linear interpolation && yuv2rgb in a single step:
int Y=yuvtab_2568[buf0[i]>>7];
int U=((uvbuf0[i/2]*uvalpha1+uvbuf1[i/2]*uvalpha)>>19);
int V=((uvbuf0[i/2+2048]*uvalpha1+uvbuf1[i/2+2048]*uvalpha)>>19);
((uint16_t*)dest)[0] =
(clip_table[(Y + yuvtab_40cf[U]) >>13]>>3) |
((clip_table[(Y + yuvtab_1a1e[V] + yuvtab_0c92[U]) >>13]<<2)&0x03E0) |
((clip_table[(Y + yuvtab_3343[V]) >>13]<<7)&0x7C00);
dest+=2;
}
}
#endif #endif
} }

196
postproc/swscale_template.c
View File

@ -249,8 +249,60 @@ static int canMMX2BeUsed=0;
"pmulhw ugCoeff, %%mm3 \n\t"\ "pmulhw ugCoeff, %%mm3 \n\t"\
"pmulhw vgCoeff, %%mm4 \n\t"\ "pmulhw vgCoeff, %%mm4 \n\t"\
/* mm2=(U-128)8, mm3=ug, mm4=vg mm5=(V-128)8 */\ /* mm2=(U-128)8, mm3=ug, mm4=vg mm5=(V-128)8 */\
"movq (%1, %%eax, 2), %%mm1 \n\t" /*buf0[eax]*/\ "movq (%0, %%eax, 2), %%mm1 \n\t" /*buf0[eax]*/\
"movq 8(%1, %%eax, 2), %%mm7 \n\t" /*buf0[eax]*/\ "movq 8(%0, %%eax, 2), %%mm7 \n\t" /*buf0[eax]*/\
"psraw $4, %%mm1 \n\t" /* buf0[eax] - buf1[eax] >>4*/\
"psraw $4, %%mm7 \n\t" /* buf0[eax] - buf1[eax] >>4*/\
"pmulhw ubCoeff, %%mm2 \n\t"\
"pmulhw vrCoeff, %%mm5 \n\t"\
"psubw w80, %%mm1 \n\t" /* 8(Y-16)*/\
"psubw w80, %%mm7 \n\t" /* 8(Y-16)*/\
"pmulhw yCoeff, %%mm1 \n\t"\
"pmulhw yCoeff, %%mm7 \n\t"\
/* mm1= Y1, mm2=ub, mm3=ug, mm4=vg mm5=vr, mm7=Y2 */\
"paddw %%mm3, %%mm4 \n\t"\
"movq %%mm2, %%mm0 \n\t"\
"movq %%mm5, %%mm6 \n\t"\
"movq %%mm4, %%mm3 \n\t"\
"punpcklwd %%mm2, %%mm2 \n\t"\
"punpcklwd %%mm5, %%mm5 \n\t"\
"punpcklwd %%mm4, %%mm4 \n\t"\
"paddw %%mm1, %%mm2 \n\t"\
"paddw %%mm1, %%mm5 \n\t"\
"paddw %%mm1, %%mm4 \n\t"\
"punpckhwd %%mm0, %%mm0 \n\t"\
"punpckhwd %%mm6, %%mm6 \n\t"\
"punpckhwd %%mm3, %%mm3 \n\t"\
"paddw %%mm7, %%mm0 \n\t"\
"paddw %%mm7, %%mm6 \n\t"\
"paddw %%mm7, %%mm3 \n\t"\
/* mm0=B1, mm2=B2, mm3=G2, mm4=G1, mm5=R1, mm6=R2 */\
"packuswb %%mm0, %%mm2 \n\t"\
"packuswb %%mm6, %%mm5 \n\t"\
"packuswb %%mm3, %%mm4 \n\t"\
"pxor %%mm7, %%mm7 \n\t"
// do vertical chrominance interpolation
#define YSCALEYUV2RGB1b \
"xorl %%eax, %%eax \n\t"\
"1: \n\t"\
"movq (%2, %%eax), %%mm2 \n\t" /* uvbuf0[eax]*/\
"movq (%3, %%eax), %%mm3 \n\t" /* uvbuf1[eax]*/\
"movq 4096(%2, %%eax), %%mm5 \n\t" /* uvbuf0[eax+2048]*/\
"movq 4096(%3, %%eax), %%mm4 \n\t" /* uvbuf1[eax+2048]*/\
"paddw %%mm2, %%mm3 \n\t"\
"paddw %%mm5, %%mm4 \n\t"\
"psraw $5, %%mm3 \n\t" /* uvbuf0[eax] - uvbuf1[eax] >>4*/\
"psraw $5, %%mm4 \n\t" /* uvbuf0[eax+2048] - uvbuf1[eax+2048] >>4*/\
"psubw w400, %%mm3 \n\t" /* (U-128)8*/\
"psubw w400, %%mm4 \n\t" /* (V-128)8*/\
"movq %%mm3, %%mm2 \n\t" /* (U-128)8*/\
"movq %%mm4, %%mm5 \n\t" /* (V-128)8*/\
"pmulhw ugCoeff, %%mm3 \n\t"\
"pmulhw vgCoeff, %%mm4 \n\t"\
/* mm2=(U-128)8, mm3=ug, mm4=vg mm5=(V-128)8 */\
"movq (%0, %%eax, 2), %%mm1 \n\t" /*buf0[eax]*/\
"movq 8(%0, %%eax, 2), %%mm7 \n\t" /*buf0[eax]*/\
"psraw $4, %%mm1 \n\t" /* buf0[eax] - buf1[eax] >>4*/\ "psraw $4, %%mm1 \n\t" /* buf0[eax] - buf1[eax] >>4*/\
"psraw $4, %%mm7 \n\t" /* buf0[eax] - buf1[eax] >>4*/\ "psraw $4, %%mm7 \n\t" /* buf0[eax] - buf1[eax] >>4*/\
"pmulhw ubCoeff, %%mm2 \n\t"\ "pmulhw ubCoeff, %%mm2 \n\t"\
@ -803,6 +855,9 @@ static inline void yuv2rgb1(uint16_t *buf0, uint16_t *buf1, uint16_t *uvbuf0, ui
return; return;
} }
#ifdef HAVE_MMX #ifdef HAVE_MMX
if( yalpha > 2048 ) buf0 = buf1;
if( uvalpha < 2048 ) // note this is not correct (shifts chrominance by 0.5 pixels) but its a bit faster
{
if(dstbpp == 32) if(dstbpp == 32)
{ {
asm volatile( asm volatile(
@ -856,53 +911,110 @@ static inline void yuv2rgb1(uint16_t *buf0, uint16_t *buf1, uint16_t *uvbuf0, ui
: "%eax" : "%eax"
); );
} }
#else }
//FIXME unroll C loop and dont recalculate UV else
asm volatile ("\n\t"::: "memory"); {
if(dstbpp == 32)
if(dstbpp==32 || dstbpp==24)
{ {
for(i=0;i<dstw;i++){ asm volatile(
// vertical linear interpolation && yuv2rgb in a single step: YSCALEYUV2RGB1b
int Y=yuvtab_2568[buf0[i]>>7]; WRITEBGR32
int U=((uvbuf0[i/2]*uvalpha1+uvbuf1[i/2]*uvalpha)>>19); :: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),
int V=((uvbuf0[i/2+2048]*uvalpha1+uvbuf1[i/2+2048]*uvalpha)>>19); "m" (yalpha1), "m" (uvalpha1)
dest[0]=clip_table[((Y + yuvtab_40cf[U]) >>13)]; : "%eax"
dest[1]=clip_table[((Y + yuvtab_1a1e[V] + yuvtab_0c92[U]) >>13)]; );
dest[2]=clip_table[((Y + yuvtab_3343[V]) >>13)];
dest+=dstbpp>>3;
}
} }
else if(dstbpp==16) else if(dstbpp==24)
{ {
for(i=0;i<dstw;i++){ asm volatile(
// vertical linear interpolation && yuv2rgb in a single step: YSCALEYUV2RGB1b
int Y=yuvtab_2568[buf0[i]>>7]; WRITEBGR24
int U=((uvbuf0[i/2]*uvalpha1+uvbuf1[i/2]*uvalpha)>>19); :: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),
int V=((uvbuf0[i/2+2048]*uvalpha1+uvbuf1[i/2+2048]*uvalpha)>>19); "m" (yalpha1), "m" (uvalpha1)
: "%eax", "%ebx"
((uint16_t*)dest)[0] = );
(clip_table[(Y + yuvtab_40cf[U]) >>13]>>3) |
((clip_table[(Y + yuvtab_1a1e[V] + yuvtab_0c92[U]) >>13]<<3)&0x07E0) |
((clip_table[(Y + yuvtab_3343[V]) >>13]<<8)&0xF800);
dest+=2;
}
} }
else if(dstbpp==15) else if(dstbpp==15)
{ {
for(i=0;i<dstw;i++){ asm volatile(
// vertical linear interpolation && yuv2rgb in a single step: YSCALEYUV2RGB1b
int Y=yuvtab_2568[buf0[i]>>7]; /* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
int U=((uvbuf0[i/2]*uvalpha1+uvbuf1[i/2]*uvalpha)>>19); #ifdef DITHER1XBPP
int V=((uvbuf0[i/2+2048]*uvalpha1+uvbuf1[i/2+2048]*uvalpha)>>19); "paddusb b16Dither, %%mm2 \n\t"
"paddusb b16Dither, %%mm4 \n\t"
((uint16_t*)dest)[0] = "paddusb b16Dither, %%mm5 \n\t"
(clip_table[(Y + yuvtab_40cf[U]) >>13]>>3) | #endif
((clip_table[(Y + yuvtab_1a1e[V] + yuvtab_0c92[U]) >>13]<<2)&0x03E0) | WRITEBGR15
((clip_table[(Y + yuvtab_3343[V]) >>13]<<7)&0x7C00); :: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),
dest+=2; "m" (yalpha1), "m" (uvalpha1)
} : "%eax"
);
} }
else if(dstbpp==16)
{
asm volatile(
YSCALEYUV2RGB1b
/* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
#ifdef DITHER1XBPP
"paddusb g16Dither, %%mm2 \n\t"
"paddusb b16Dither, %%mm4 \n\t"
"paddusb b16Dither, %%mm5 \n\t"
#endif
WRITEBGR16
:: "r" (buf0), "r" (buf1), "r" (uvbuf0), "r" (uvbuf1), "r" (dest), "m" (dstw),
"m" (yalpha1), "m" (uvalpha1)
: "%eax"
);
}
}
#else
//FIXME unroll C loop and dont recalculate UV
asm volatile ("\n\t"::: "memory");
if(dstbpp==32 || dstbpp==24)
{
for(i=0;i<dstw;i++){
// vertical linear interpolation && yuv2rgb in a single step:
int Y=yuvtab_2568[buf0[i]>>7];
int U=((uvbuf0[i/2]*uvalpha1+uvbuf1[i/2]*uvalpha)>>19);
int V=((uvbuf0[i/2+2048]*uvalpha1+uvbuf1[i/2+2048]*uvalpha)>>19);
dest[0]=clip_table[((Y + yuvtab_40cf[U]) >>13)];
dest[1]=clip_table[((Y + yuvtab_1a1e[V] + yuvtab_0c92[U]) >>13)];
dest[2]=clip_table[((Y + yuvtab_3343[V]) >>13)];
dest+=dstbpp>>3;
}
}
else if(dstbpp==16)
{
for(i=0;i<dstw;i++){
// vertical linear interpolation && yuv2rgb in a single step:
int Y=yuvtab_2568[buf0[i]>>7];
int U=((uvbuf0[i/2]*uvalpha1+uvbuf1[i/2]*uvalpha)>>19);
int V=((uvbuf0[i/2+2048]*uvalpha1+uvbuf1[i/2+2048]*uvalpha)>>19);
((uint16_t*)dest)[0] =
(clip_table[(Y + yuvtab_40cf[U]) >>13]>>3) |
((clip_table[(Y + yuvtab_1a1e[V] + yuvtab_0c92[U]) >>13]<<3)&0x07E0) |
((clip_table[(Y + yuvtab_3343[V]) >>13]<<8)&0xF800);
dest+=2;
}
}
else if(dstbpp==15)
{
for(i=0;i<dstw;i++){
// vertical linear interpolation && yuv2rgb in a single step:
int Y=yuvtab_2568[buf0[i]>>7];
int U=((uvbuf0[i/2]*uvalpha1+uvbuf1[i/2]*uvalpha)>>19);
int V=((uvbuf0[i/2+2048]*uvalpha1+uvbuf1[i/2+2048]*uvalpha)>>19);
((uint16_t*)dest)[0] =
(clip_table[(Y + yuvtab_40cf[U]) >>13]>>3) |
((clip_table[(Y + yuvtab_1a1e[V] + yuvtab_0c92[U]) >>13]<<2)&0x03E0) |
((clip_table[(Y + yuvtab_3343[V]) >>13]<<7)&0x7C00);
dest+=2;
}
}
#endif #endif
} }