static inline void RENAME(rgb16to15)(const uint8_t *src, uint8_t *dst, int src_size) { register const uint8_t* s=src; register uint8_t* d=dst; register const uint8_t *end; const uint8_t *mm_end; end = s + src_size; __asm__ volatile(PREFETCH" %0"::"m"(*s)); __asm__ volatile("movq %0, %%mm7"::"m"(mask15rg)); __asm__ volatile("movq %0, %%mm6"::"m"(mask15b)); mm_end = end - 15; while (s<mm_end) { __asm__ volatile( PREFETCH" 32%1 \n\t" "movq %1, %%mm0 \n\t" "movq 8%1, %%mm2 \n\t" "movq %%mm0, %%mm1 \n\t" "movq %%mm2, %%mm3 \n\t" "psrlq $1, %%mm0 \n\t" "psrlq $1, %%mm2 \n\t" "pand %%mm7, %%mm0 \n\t" "pand %%mm7, %%mm2 \n\t" "pand %%mm6, %%mm1 \n\t" "pand %%mm6, %%mm3 \n\t" "por %%mm1, %%mm0 \n\t" "por %%mm3, %%mm2 \n\t" MOVNTQ" %%mm0, %0 \n\t" MOVNTQ" %%mm2, 8%0" :"=m"(*d) :"m"(*s) ); d+=16; s+=16; } __asm__ volatile(SFENCE:::"memory"); __asm__ volatile(EMMS:::"memory"); mm_end = end - 3; while (s < mm_end) { register uint32_t x= *((const uint32_t*)s); *((uint32_t *)d) = ((x>>1)&0x7FE07FE0) | (x&0x001F001F); s+=4; d+=4; } if (s < end) { register uint16_t x= *((const uint16_t*)s); *((uint16_t *)d) = ((x>>1)&0x7FE0) | (x&0x001F); } }