static inline void RENAME(rgb24tobgr16)(const uint8_t *src, uint8_t *dst, unsigned int src_size) { const uint8_t *s = src; const uint8_t *end; #ifdef HAVE_MMX const uint8_t *mm_end; #endif uint16_t *d = (uint16_t *)dst; end = s + src_size; #ifdef HAVE_MMX __asm __volatile(PREFETCH" %0"::"m"(*src):"memory"); __asm __volatile( "movq %0, %%mm7\n\t" "movq %1, %%mm6\n\t" ::"m"(red_16mask),"m"(green_16mask)); mm_end = end - 15; while(s < mm_end) { __asm __volatile( PREFETCH" 32%1\n\t" "movd %1, %%mm0\n\t" "movd 3%1, %%mm3\n\t" "punpckldq 6%1, %%mm0\n\t" "punpckldq 9%1, %%mm3\n\t" "movq %%mm0, %%mm1\n\t" "movq %%mm0, %%mm2\n\t" "movq %%mm3, %%mm4\n\t" "movq %%mm3, %%mm5\n\t" "psllq $8, %%mm0\n\t" "psllq $8, %%mm3\n\t" "pand %%mm7, %%mm0\n\t" "pand %%mm7, %%mm3\n\t" "psrlq $5, %%mm1\n\t" "psrlq $5, %%mm4\n\t" "pand %%mm6, %%mm1\n\t" "pand %%mm6, %%mm4\n\t" "psrlq $19, %%mm2\n\t" "psrlq $19, %%mm5\n\t" "pand %2, %%mm2\n\t" "pand %2, %%mm5\n\t" "por %%mm1, %%mm0\n\t" "por %%mm4, %%mm3\n\t" "por %%mm2, %%mm0\n\t" "por %%mm5, %%mm3\n\t" "psllq $16, %%mm3\n\t" "por %%mm3, %%mm0\n\t" MOVNTQ" %%mm0, %0\n\t" :"=m"(*d):"m"(*s),"m"(blue_16mask):"memory"); d += 4; s += 12; } __asm __volatile(SFENCE:::"memory"); __asm __volatile(EMMS:::"memory"); #endif while(s < end) { const int r= *s++; const int g= *s++; const int b= *s++; *d++ = (b>>3) | ((g&0xFC)<<3) | ((r&0xF8)<<8); } }