173 lines
4.1 KiB
C
173 lines
4.1 KiB
C
/*
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*
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* rgb2rgb.c, Software RGB to RGB convertor
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* Written by Nick Kurshev.
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*/
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#include <inttypes.h>
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#include "../config.h"
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#include "rgb2rgb.h"
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#include "../mmx_defs.h"
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#ifdef HAVE_MMX
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static const uint64_t mask32 __attribute__((aligned(8))) = 0x00FFFFFF00FFFFFFULL;
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static const uint64_t mask24l __attribute__((aligned(8))) = 0x0000000000FFFFFFULL;
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static const uint64_t mask24h __attribute__((aligned(8))) = 0x0000FFFFFF000000ULL;
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static const uint64_t mask15b __attribute__((aligned(8))) = 0x001F001F001F001FULL; /* 00000000 00011111 xxB */
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static const uint64_t mask15rg __attribute__((aligned(8))) = 0x7FE07FE07FE07FE0ULL; /* 01111111 11100000 RGx */
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#endif
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void rgb24to32(uint8_t *src,uint8_t *dst,uint32_t src_size)
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{
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uint8_t *dest = dst;
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uint8_t *s = src;
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uint8_t *end;
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#ifdef HAVE_MMX
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uint8_t *mm_end;
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#endif
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end = s + src_size;
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#ifdef HAVE_MMX
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__asm __volatile(PREFETCH" %0"::"m"(*s):"memory");
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mm_end = (uint8_t*)((((unsigned long)end)/(MMREG_SIZE*2))*(MMREG_SIZE*2));
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__asm __volatile("movq %0, %%mm7"::"m"(mask32):"memory");
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if(mm_end == end) mm_end -= MMREG_SIZE*2;
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while(s < mm_end)
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{
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__asm __volatile(
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PREFETCH" 32%1\n\t"
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"movd %1, %%mm0\n\t"
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"movd 3%1, %%mm1\n\t"
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"movd 6%1, %%mm2\n\t"
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"movd 9%1, %%mm3\n\t"
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"punpckldq %%mm1, %%mm0\n\t"
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"punpckldq %%mm3, %%mm2\n\t"
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"pand %%mm7, %%mm0\n\t"
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"pand %%mm7, %%mm2\n\t"
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MOVNTQ" %%mm0, %0\n\t"
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MOVNTQ" %%mm2, 8%0"
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:"=m"(*dest)
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:"m"(*s)
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:"memory");
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dest += 16;
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s += 12;
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}
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__asm __volatile(SFENCE:::"memory");
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__asm __volatile(EMMS:::"memory");
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#endif
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while(s < end)
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{
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*dest++ = *s++;
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*dest++ = *s++;
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*dest++ = *s++;
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*dest++ = 0;
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}
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}
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void rgb32to24(uint8_t *src,uint8_t *dst,uint32_t src_size)
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{
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uint8_t *dest = dst;
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uint8_t *s = src;
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uint8_t *end;
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#ifdef HAVE_MMX
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uint8_t *mm_end;
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#endif
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end = s + src_size;
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#ifdef HAVE_MMX
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__asm __volatile(PREFETCH" %0"::"m"(*s):"memory");
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mm_end = (uint8_t*)((((unsigned long)end)/(MMREG_SIZE*2))*(MMREG_SIZE*2));
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__asm __volatile(
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"movq %0, %%mm7\n\t"
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"movq %1, %%mm6"
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::"m"(mask24l),"m"(mask24h):"memory");
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if(mm_end == end) mm_end -= MMREG_SIZE*2;
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while(s < mm_end)
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{
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__asm __volatile(
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PREFETCH" 32%1\n\t"
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"movq %1, %%mm0\n\t"
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"movq 8%1, %%mm1\n\t"
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"movq %%mm0, %%mm2\n\t"
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"movq %%mm1, %%mm3\n\t"
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"psrlq $8, %%mm2\n\t"
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"psrlq $8, %%mm3\n\t"
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"pand %%mm7, %%mm0\n\t"
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"pand %%mm7, %%mm1\n\t"
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"pand %%mm6, %%mm2\n\t"
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"pand %%mm6, %%mm3\n\t"
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"por %%mm2, %%mm0\n\t"
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"por %%mm3, %%mm1\n\t"
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MOVNTQ" %%mm0, %0\n\t"
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MOVNTQ" %%mm1, 6%0"
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:"=m"(*dest)
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:"m"(*s)
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:"memory");
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dest += 12;
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s += 16;
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}
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__asm __volatile(SFENCE:::"memory");
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__asm __volatile(EMMS:::"memory");
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#endif
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while(s < end)
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{
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*dest++ = *s++;
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*dest++ = *s++;
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*dest++ = *s++;
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s++;
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}
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}
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/*
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Original by Strepto/Astral
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ported to gcc & bugfixed : A'rpi
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MMX, 3DNOW optimization by Nick Kurshev
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*/
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void rgb15to16(uint8_t *src,uint8_t *dst,uint32_t src_size)
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{
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#ifdef HAVE_MMX
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register char* s=src+src_size;
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register char* d=dst+src_size;
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register int offs=-src_size;
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__asm __volatile(PREFETCH" %0"::"m"(*(s+offs)):"memory");
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__asm __volatile(
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"movq %0, %%mm4\n\t"
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"movq %1, %%mm5"
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::"m"(mask15b), "m"(mask15rg):"memory");
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while(offs<0)
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{
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__asm __volatile(
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PREFETCH" 32%1\n\t"
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"movq %1, %%mm0\n\t"
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"movq 8%1, %%mm2\n\t"
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"movq %%mm0, %%mm1\n\t"
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"movq %%mm2, %%mm3\n\t"
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"pand %%mm4, %%mm0\n\t"
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"pand %%mm5, %%mm1\n\t"
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"pand %%mm4, %%mm2\n\t"
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"pand %%mm5, %%mm3\n\t"
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"psllq $1, %%mm1\n\t"
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"psllq $1, %%mm3\n\t"
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"por %%mm1, %%mm0\n\t"
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"por %%mm3, %%mm2\n\t"
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MOVNTQ" %%mm0, %0\n\t"
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MOVNTQ" %%mm2, 8%0"
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:"=m"(*(d+offs))
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:"m"(*(s+offs))
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:"memory");
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offs+=16;
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}
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__asm __volatile(SFENCE:::"memory");
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__asm __volatile(EMMS:::"memory");
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#else
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uint16_t *s1=( uint16_t * )src;
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uint16_t *d1=( uint16_t * )dst;
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uint16_t *e=((uint8_t *)s1)+src_size;
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while( s1<e ){
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register int x=*( s1++ );
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/* rrrrrggggggbbbbb
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0rrrrrgggggbbbbb
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0111 1111 1110 0000=0x7FE0
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00000000000001 1111=0x001F */
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*( d1++ )=( x&0x001F )|( ( x&0x7FE0 )<<1 );
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}
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#endif
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}
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