static inline void RENAME(rgb16tobgr24)(const uint8_t *src, uint8_t *dst, int src_size)

{

    const uint16_t *end;

    const uint16_t *mm_end;

    uint8_t *d = (uint8_t *)dst;

    const uint16_t *s = (const uint16_t *)src;

    end = s + src_size/2;

    __asm__ volatile(PREFETCH"    %0"::"m"(*s):"memory");

    mm_end = end - 7;

    while (s < mm_end) {

        __asm__ volatile(

            PREFETCH"    32%1           \n\t"

            "movq          %1, %%mm0    \n\t"

            "movq          %1, %%mm1    \n\t"

            "movq          %1, %%mm2    \n\t"

            "pand          %2, %%mm0    \n\t"

            "pand          %3, %%mm1    \n\t"

            "pand          %4, %%mm2    \n\t"

            "psllq         $3, %%mm0    \n\t"

            "psrlq         $3, %%mm1    \n\t"

            "psrlq         $8, %%mm2    \n\t"

            "movq       %%mm0, %%mm3    \n\t"

            "movq       %%mm1, %%mm4    \n\t"

            "movq       %%mm2, %%mm5    \n\t"

            "punpcklwd     %5, %%mm0    \n\t"

            "punpcklwd     %5, %%mm1    \n\t"

            "punpcklwd     %5, %%mm2    \n\t"

            "punpckhwd     %5, %%mm3    \n\t"

            "punpckhwd     %5, %%mm4    \n\t"

            "punpckhwd     %5, %%mm5    \n\t"

            "psllq         $8, %%mm1    \n\t"

            "psllq        $16, %%mm2    \n\t"

            "por        %%mm1, %%mm0    \n\t"

            "por        %%mm2, %%mm0    \n\t"

            "psllq         $8, %%mm4    \n\t"

            "psllq        $16, %%mm5    \n\t"

            "por        %%mm4, %%mm3    \n\t"

            "por        %%mm5, %%mm3    \n\t"



            "movq       %%mm0, %%mm6    \n\t"

            "movq       %%mm3, %%mm7    \n\t"



            "movq         8%1, %%mm0    \n\t"

            "movq         8%1, %%mm1    \n\t"

            "movq         8%1, %%mm2    \n\t"

            "pand          %2, %%mm0    \n\t"

            "pand          %3, %%mm1    \n\t"

            "pand          %4, %%mm2    \n\t"

            "psllq         $3, %%mm0    \n\t"

            "psrlq         $3, %%mm1    \n\t"

            "psrlq         $8, %%mm2    \n\t"

            "movq       %%mm0, %%mm3    \n\t"

            "movq       %%mm1, %%mm4    \n\t"

            "movq       %%mm2, %%mm5    \n\t"

            "punpcklwd     %5, %%mm0    \n\t"

            "punpcklwd     %5, %%mm1    \n\t"

            "punpcklwd     %5, %%mm2    \n\t"

            "punpckhwd     %5, %%mm3    \n\t"

            "punpckhwd     %5, %%mm4    \n\t"

            "punpckhwd     %5, %%mm5    \n\t"

            "psllq         $8, %%mm1    \n\t"

            "psllq        $16, %%mm2    \n\t"

            "por        %%mm1, %%mm0    \n\t"

            "por        %%mm2, %%mm0    \n\t"

            "psllq         $8, %%mm4    \n\t"

            "psllq        $16, %%mm5    \n\t"

            "por        %%mm4, %%mm3    \n\t"

            "por        %%mm5, %%mm3    \n\t"

            :"=m"(*d)

            :"m"(*s),"m"(mask16b),"m"(mask16g),"m"(mask16r),"m"(mmx_null)

            :"memory");

        /* borrowed 32 to 24 */

        __asm__ volatile(

            "movq       %%mm0, %%mm4    \n\t"

            "movq       %%mm3, %%mm5    \n\t"

            "movq       %%mm6, %%mm0    \n\t"

            "movq       %%mm7, %%mm1    \n\t"



            "movq       %%mm4, %%mm6    \n\t"

            "movq       %%mm5, %%mm7    \n\t"

            "movq       %%mm0, %%mm2    \n\t"

            "movq       %%mm1, %%mm3    \n\t"



            STORE_BGR24_MMX



            :"=m"(*d)

            :"m"(*s)

            :"memory");

        d += 24;

        s += 8;

    }

    __asm__ volatile(SFENCE:::"memory");

    __asm__ volatile(EMMS:::"memory");

    while (s < end) {

        register uint16_t bgr;

        bgr = *s++;

        *d++ = (bgr&0x1F)<<3;

        *d++ = (bgr&0x7E0)>>3;

        *d++ = (bgr&0xF800)>>8;

    }

}
