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#include <inttypes.h>
#include "../config.h"
#include "rgb2rgb.h"
#include "mmx.h"
#ifdef HAVE_3DNOW
#define PREFETCH "prefetch"
#define PREFETCHW "prefetchw"
#elif defined ( HAVE_MMX2 )
#define PREFETCH "prefetchnta"
#define PREFETCHW "prefetcht0"
#endif
#ifdef HAVE_3DNOW
#define EMMS "femms"
#else
#define EMMS "emms"
#endif
#ifdef HAVE_MMX2
#define MOVNTQ "movntq"
#else
#define MOVNTQ "movq"
#endif
#ifdef HAVE_MMX2
#define SFENCE "sfence"
#endif
void rgb24to32(uint8_t *src,uint8_t *dst,uint32_t src_size)
{
uint8_t *dest = dst;
uint8_t *s = src;
uint8_t *end;
#ifdef HAVE_MMX
const uint64_t mask32 = 0x00FFFFFF00FFFFFFULL;
uint8_t *mm_end;
#endif
end = s + src_size;
#ifdef HAVE_MMX
#ifdef PREFETCH
__asm __volatile(
PREFETCH" %0\n\t"
::"m"(*s):"memory");
#endif
mm_end = (uint8_t*)((((unsigned long)end)/16)*16);
__asm __volatile("movq %0, %%mm7"::"m"(mask32):"memory");
while(s < mm_end)
{
#ifdef PREFETCH
__asm __volatile(
PREFETCH" 32%0\n\t"
::"m"(*s):"memory");
#endif
__asm __volatile(
"movd %1, %%mm0\n\t"
"movd 3%1, %%mm1\n\t"
"movd 6%1, %%mm2\n\t"
"movd 9%1, %%mm3\n\t"
"punpckldq %%mm1, %%mm0\n\t"
"punpckldq %%mm3, %%mm2\n\t"
"pand %%mm7, %%mm0\n\t"
"pand %%mm7, %%mm2\n\t"
MOVNTQ" %%mm0, %0\n\t"
MOVNTQ" %%mm2, 8%0"
:"=m"(*dest)
:"m"(*s)
:"memory");
dest += 16;
s += 12;
}
#ifdef SFENCE
__asm __volatile(SFENCE:::"memory");
#endif
__asm __volatile(EMMS:::"memory");
#endif
while(s < end)
{
*dest++ = *s++;
*dest++ = *s++;
*dest++ = *s++;
*dest++ = 0;
}
}
/* TODO: MMX optimization */
void rgb32to24(uint8_t *src,uint8_t *dst,uint32_t src_size)
{
uint8_t *dest = dst;
uint8_t *s = src;
uint8_t *end;
end = s + src_size;
while(s < end)
{
*dest++ = *s++;
*dest++ = *s++;
*dest++ = *s++;
s++;
}
}
/* Original by Strepto/Astral
ported to gcc & bugfixed : A'rpi */
void rgb15to16(uint8_t *src,uint8_t *dst,uint32_t src_size)
{
#ifdef HAVE_MMX
static uint64_t mask_b = 0x001F001F001F001FLL; // 00000000 00011111 xxB
static uint64_t mask_rg = 0x7FE07FE07FE07FE0LL; // 01111111 11100000 RGx
register char* s=src+src_size;
register char* d=dst+src_size;
register int offs=-src_size;
movq_m2r (mask_b, mm4);
movq_m2r (mask_rg, mm5);
while(offs<0){
movq_m2r (*(s+offs), mm0);
movq_r2r (mm0, mm1);
movq_m2r (*(s+8+offs), mm2);
movq_r2r (mm2, mm3);
pand_r2r (mm4, mm0);
pand_r2r (mm5, mm1);
psllq_i2r(1,mm1);
pand_r2r (mm4, mm2);
pand_r2r (mm5, mm3);
por_r2r (mm1, mm0);
psllq_i2r(1,mm3);
movq_r2m (mm0,*(d+offs));
por_r2r (mm3,mm2);
movq_r2m (mm2,*(d+8+offs));
offs+=16;
}
emms();
#else
uint16_t *s1=( uint16_t * )src;
uint16_t *d1=( uint16_t * )dst;
uint16_t *e=((uint8_t *)s1)+src_size;
while( s1<e ){
register int x=*( s1++ );
/* rrrrrggggggbbbbb
0rrrrrgggggbbbbb
0111 1111 1110 0000=0x7FE0
00000000000001 1111=0x001F */
*( d1++ )=( x&0x001F )|( ( x&0x7FE0 )<<1 );
}
#endif
}
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