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88 lines
1.8 KiB
88 lines
1.8 KiB
#include <inttypes.h> |
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#include "../config.h" |
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#include "rgb2rgb.h" |
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#include "mmx.h" |
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/* TODO: MMX optimization */ |
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void rgb24to32(uint8_t *src,uint8_t *dst,uint32_t src_size) |
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{ |
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uint32_t *dest = (uint32_t *)dst; |
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uint8_t *s = src; |
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uint8_t *end; |
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end = s + src_size; |
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while(s < end) |
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{ |
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uint32_t rgb0; |
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rgb0 = *(uint32_t *)s; |
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*dest++ = rgb0 & 0xFFFFFFUL; |
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s += 3; |
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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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end = s + src_size; |
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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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/* Original by Strepto/Astral |
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ported to gcc & bugfixed : A'rpi */ |
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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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static uint64_t mask_b = 0x001F001F001F001FLL; // 00000000 00011111 xxB |
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static uint64_t mask_rg = 0x7FE07FE07FE07FE0LL; // 01111111 11100000 RGx |
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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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movq_m2r (mask_b, mm4); |
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movq_m2r (mask_rg, mm5); |
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while(offs<0){ |
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movq_m2r (*(s+offs), mm0); |
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movq_r2r (mm0, mm1); |
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movq_m2r (*(s+8+offs), mm2); |
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movq_r2r (mm2, mm3); |
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pand_r2r (mm4, mm0); |
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pand_r2r (mm5, mm1); |
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psllq_i2r(1,mm1); |
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pand_r2r (mm4, mm2); |
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pand_r2r (mm5, mm3); |
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por_r2r (mm1, mm0); |
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psllq_i2r(1,mm3); |
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movq_r2m (mm0,*(d+offs)); |
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por_r2r (mm3,mm2); |
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movq_r2m (mm2,*(d+8+offs)); |
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offs+=16; |
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} |
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emms(); |
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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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