ffmpeg/libswscale/x86/rgb2rgb.c

/*
 * software RGB to RGB converter
 * pluralize by software PAL8 to RGB converter
 *              software YUV to YUV converter
 *              software YUV to RGB converter
 * Written by Nick Kurshev.
 * palette & YUV & runtime CPU stuff by Michael (michaelni@gmx.at)
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include <stdint.h>

#include "config.h"
#include "libavutil/attributes.h"
#include "libavutil/x86/cpu.h"
#include "libavutil/cpu.h"
#include "libavutil/bswap.h"
#include "libavutil/mem_internal.h"

#include "libswscale/rgb2rgb.h"
#include "libswscale/swscale.h"
#include "libswscale/swscale_internal.h"

#if HAVE_INLINE_ASM
#include "libavutil/x86/asm.h"

DECLARE_ASM_CONST(8, uint64_t, mmx_ff)       = 0x00000000000000FFULL;
DECLARE_ASM_CONST(8, uint64_t, mmx_null)     = 0x0000000000000000ULL;
DECLARE_ASM_CONST(8, uint64_t, mask32a)      = 0xFF000000FF000000ULL;
DECLARE_ASM_CONST(8, uint64_t, mask3216br)   = 0x00F800F800F800F8ULL;
DECLARE_ASM_CONST(8, uint64_t, mask3216g)    = 0x0000FC000000FC00ULL;
DECLARE_ASM_CONST(8, uint64_t, mask3215g)    = 0x0000F8000000F800ULL;
DECLARE_ASM_CONST(8, uint64_t, mul3216)      = 0x2000000420000004ULL;
DECLARE_ASM_CONST(8, uint64_t, mul3215)      = 0x2000000820000008ULL;
DECLARE_ASM_CONST(8, uint64_t, mask24b)      = 0x00FF0000FF0000FFULL;
DECLARE_ASM_CONST(8, uint64_t, mask24g)      = 0xFF0000FF0000FF00ULL;
DECLARE_ASM_CONST(8, uint64_t, mask24r)      = 0x0000FF0000FF0000ULL;
DECLARE_ASM_CONST(8, uint64_t, mask24l)      = 0x0000000000FFFFFFULL;
DECLARE_ASM_CONST(8, uint64_t, mask24h)      = 0x0000FFFFFF000000ULL;
DECLARE_ASM_CONST(8, uint64_t, mask15b)      = 0x001F001F001F001FULL; /* 00000000 00011111  xxB */
DECLARE_ASM_CONST(8, uint64_t, mask15rg)     = 0x7FE07FE07FE07FE0ULL; /* 01111111 11100000  RGx */
DECLARE_ASM_CONST(8, uint64_t, mask15s)      = 0xFFE0FFE0FFE0FFE0ULL;
DECLARE_ASM_CONST(8, uint64_t, mask15g)      = 0x03E003E003E003E0ULL;
DECLARE_ASM_CONST(8, uint64_t, mask15r)      = 0x7C007C007C007C00ULL;
#define mask16b mask15b
DECLARE_ASM_CONST(8, uint64_t, mask16g)      = 0x07E007E007E007E0ULL;
DECLARE_ASM_CONST(8, uint64_t, mask16r)      = 0xF800F800F800F800ULL;
DECLARE_ASM_CONST(8, uint64_t, red_16mask)   = 0x0000f8000000f800ULL;
DECLARE_ASM_CONST(8, uint64_t, green_16mask) = 0x000007e0000007e0ULL;
DECLARE_ASM_CONST(8, uint64_t, blue_16mask)  = 0x0000001f0000001fULL;
DECLARE_ASM_CONST(8, uint64_t, red_15mask)   = 0x00007c0000007c00ULL;
DECLARE_ASM_CONST(8, uint64_t, green_15mask) = 0x000003e0000003e0ULL;
DECLARE_ASM_CONST(8, uint64_t, blue_15mask)  = 0x0000001f0000001fULL;
DECLARE_ASM_CONST(8, uint64_t, mul15_mid)    = 0x4200420042004200ULL;
DECLARE_ASM_CONST(8, uint64_t, mul15_hi)     = 0x0210021002100210ULL;
DECLARE_ASM_CONST(8, uint64_t, mul16_mid)    = 0x2080208020802080ULL;

DECLARE_ALIGNED(8, extern const uint64_t, ff_bgr2YOffset);
DECLARE_ALIGNED(8, extern const uint64_t, ff_w1111);
DECLARE_ALIGNED(8, extern const uint64_t, ff_bgr2UVOffset);

#define BY ((int)( 0.098*(1<<RGB2YUV_SHIFT)+0.5))
#define BV ((int)(-0.071*(1<<RGB2YUV_SHIFT)+0.5))
#define BU ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
#define GY ((int)( 0.504*(1<<RGB2YUV_SHIFT)+0.5))
#define GV ((int)(-0.368*(1<<RGB2YUV_SHIFT)+0.5))
#define GU ((int)(-0.291*(1<<RGB2YUV_SHIFT)+0.5))
#define RY ((int)( 0.257*(1<<RGB2YUV_SHIFT)+0.5))
#define RV ((int)( 0.439*(1<<RGB2YUV_SHIFT)+0.5))
#define RU ((int)(-0.148*(1<<RGB2YUV_SHIFT)+0.5))

// MMXEXT versions
#define PREFETCH "prefetchnta"
#define PAVGB     "pavgb"
#define MOVNTQ "movntq"
#define SFENCE "sfence"

#define EMMS     "emms"

static inline void rgb24tobgr32_mmxext(const uint8_t *src, uint8_t *dst, int src_size)
{
    uint8_t *dest = dst;
    const uint8_t *s = src;
    const uint8_t *end;
    const uint8_t *mm_end;
    end = s + src_size;
    __asm__ volatile(PREFETCH"    %0"::"m"(*s):"memory");
    mm_end = end - 23;
    __asm__ volatile("movq        %0, %%mm7"::"m"(mask32a):"memory");
    while (s < mm_end) {
        __asm__ volatile(
            PREFETCH"  32(%1)           \n\t"
            "movd        (%1), %%mm0    \n\t"
            "punpckldq  3(%1), %%mm0    \n\t"
            "movd       6(%1), %%mm1    \n\t"
            "punpckldq  9(%1), %%mm1    \n\t"
            "movd      12(%1), %%mm2    \n\t"
            "punpckldq 15(%1), %%mm2    \n\t"
            "movd      18(%1), %%mm3    \n\t"
            "punpckldq 21(%1), %%mm3    \n\t"
            "por        %%mm7, %%mm0    \n\t"
            "por        %%mm7, %%mm1    \n\t"
            "por        %%mm7, %%mm2    \n\t"
            "por        %%mm7, %%mm3    \n\t"
            MOVNTQ"     %%mm0,   (%0)   \n\t"
            MOVNTQ"     %%mm1,  8(%0)   \n\t"
            MOVNTQ"     %%mm2, 16(%0)   \n\t"
            MOVNTQ"     %%mm3, 24(%0)"
            :: "r"(dest), "r"(s)
            :"memory");
        dest += 32;
        s += 24;
    }
    __asm__ volatile(SFENCE:::"memory");
    __asm__ volatile(EMMS:::"memory");
    while (s < end) {
        *dest++ = *s++;
        *dest++ = *s++;
        *dest++ = *s++;
        *dest++ = 255;
    }
}

#define STORE_BGR24_MMX \
            "psrlq         $8, %%mm2    \n\t" \
            "psrlq         $8, %%mm3    \n\t" \
            "psrlq         $8, %%mm6    \n\t" \
            "psrlq         $8, %%mm7    \n\t" \
            "pand "MANGLE(mask24l)", %%mm0\n\t" \
            "pand "MANGLE(mask24l)", %%mm1\n\t" \
            "pand "MANGLE(mask24l)", %%mm4\n\t" \
            "pand "MANGLE(mask24l)", %%mm5\n\t" \
            "pand "MANGLE(mask24h)", %%mm2\n\t" \
            "pand "MANGLE(mask24h)", %%mm3\n\t" \
            "pand "MANGLE(mask24h)", %%mm6\n\t" \
            "pand "MANGLE(mask24h)", %%mm7\n\t" \
            "por        %%mm2, %%mm0    \n\t" \
            "por        %%mm3, %%mm1    \n\t" \
            "por        %%mm6, %%mm4    \n\t" \
            "por        %%mm7, %%mm5    \n\t" \
 \
            "movq       %%mm1, %%mm2    \n\t" \
            "movq       %%mm4, %%mm3    \n\t" \
            "psllq        $48, %%mm2    \n\t" \
            "psllq        $32, %%mm3    \n\t" \
            "por        %%mm2, %%mm0    \n\t" \
            "psrlq        $16, %%mm1    \n\t" \
            "psrlq        $32, %%mm4    \n\t" \
            "psllq        $16, %%mm5    \n\t" \
            "por        %%mm3, %%mm1    \n\t" \
            "por        %%mm5, %%mm4    \n\t" \
 \
            MOVNTQ"     %%mm0,   (%0)    \n\t" \
            MOVNTQ"     %%mm1,  8(%0)    \n\t" \
            MOVNTQ"     %%mm4, 16(%0)"


static inline void rgb32tobgr24_mmxext(const uint8_t *src, uint8_t *dst, int src_size)
{
    uint8_t *dest = dst;
    const uint8_t *s = src;
    const uint8_t *end;
    const uint8_t *mm_end;
    end = s + src_size;
    __asm__ volatile(PREFETCH"    %0"::"m"(*s):"memory");
    mm_end = end - 31;
    while (s < mm_end) {
        __asm__ volatile(
            PREFETCH"  32(%1)           \n\t"
            "movq        (%1), %%mm0    \n\t"
            "movq       8(%1), %%mm1    \n\t"
            "movq      16(%1), %%mm4    \n\t"
            "movq      24(%1), %%mm5    \n\t"
            "movq       %%mm0, %%mm2    \n\t"
            "movq       %%mm1, %%mm3    \n\t"
            "movq       %%mm4, %%mm6    \n\t"
            "movq       %%mm5, %%mm7    \n\t"
            STORE_BGR24_MMX
            :: "r"(dest), "r"(s)
              NAMED_CONSTRAINTS_ADD(mask24l,mask24h)
            :"memory");
        dest += 24;
        s += 32;
    }
    __asm__ volatile(SFENCE:::"memory");
    __asm__ volatile(EMMS:::"memory");
    while (s < end) {
        *dest++ = *s++;
        *dest++ = *s++;
        *dest++ = *s++;
        s++;
    }
}

/*
 original by Strepto/Astral
 ported to gcc & bugfixed: A'rpi
 MMXEXT, 3DNOW optimization by Nick Kurshev
 32-bit C version, and and&add trick by Michael Niedermayer
*/
static inline void rgb15to16_mmxext(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, %%mm4"::"m"(mask15s));
    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"
            "pand     %%mm4, %%mm0  \n\t"
            "pand     %%mm4, %%mm2  \n\t"
            "paddw    %%mm1, %%mm0  \n\t"
            "paddw    %%mm3, %%mm2  \n\t"
            MOVNTQ"   %%mm0,  (%0)  \n\t"
            MOVNTQ"   %%mm2, 8(%0)"
            :: "r"(d), "r"(s)
        );
        d+=16;
        s+=16;
    }
    __asm__ volatile(SFENCE:::"memory");
    __asm__ volatile(EMMS:::"memory");
    mm_end = end - 3;
    while (s < mm_end) {
        register unsigned x= *((const uint32_t *)s);
        *((uint32_t *)d) = (x&0x7FFF7FFF) + (x&0x7FE07FE0);
        d+=4;
        s+=4;
    }
    if (s < end) {
        register unsigned short x= *((const uint16_t *)s);
        *((uint16_t *)d) = (x&0x7FFF) + (x&0x7FE0);
    }
}

static inline void rgb16to15_mmxext(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)"
            :: "r"(d), "r"(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);
    }
}

static inline void rgb32to16_mmxext(const uint8_t *src, uint8_t *dst, int src_size)
{
    const uint8_t *s = src;
    const uint8_t *end;
    const uint8_t *mm_end;
    uint16_t *d = (uint16_t *)dst;
    end = s + src_size;
    mm_end = end - 15;
    __asm__ volatile(
        "movq           %3, %%mm5   \n\t"
        "movq           %4, %%mm6   \n\t"
        "movq           %5, %%mm7   \n\t"
        "jmp 2f                     \n\t"
        ".p2align        4          \n\t"
        "1:                         \n\t"
        PREFETCH"   32(%1)          \n\t"
        "movd         (%1), %%mm0   \n\t"
        "movd        4(%1), %%mm3   \n\t"
        "punpckldq   8(%1), %%mm0   \n\t"
        "punpckldq  12(%1), %%mm3   \n\t"
        "movq        %%mm0, %%mm1   \n\t"
        "movq        %%mm3, %%mm4   \n\t"
        "pand        %%mm6, %%mm0   \n\t"
        "pand        %%mm6, %%mm3   \n\t"
        "pmaddwd     %%mm7, %%mm0   \n\t"
        "pmaddwd     %%mm7, %%mm3   \n\t"
        "pand        %%mm5, %%mm1   \n\t"
        "pand        %%mm5, %%mm4   \n\t"
        "por         %%mm1, %%mm0   \n\t"
        "por         %%mm4, %%mm3   \n\t"
        "psrld          $5, %%mm0   \n\t"
        "pslld         $11, %%mm3   \n\t"
        "por         %%mm3, %%mm0   \n\t"
        MOVNTQ"      %%mm0, (%0)    \n\t"
        "add           $16,  %1     \n\t"
        "add            $8,  %0     \n\t"
        "2:                         \n\t"
        "cmp            %2,  %1     \n\t"
        " jb            1b          \n\t"
        : "+r" (d), "+r"(s)
        : "r" (mm_end), "m" (mask3216g), "m" (mask3216br), "m" (mul3216)
    );
    __asm__ volatile(SFENCE:::"memory");
    __asm__ volatile(EMMS:::"memory");
    while (s < end) {
        register int rgb = *(const uint32_t*)s; s += 4;
        *d++ = ((rgb&0xFF)>>3) + ((rgb&0xFC00)>>5) + ((rgb&0xF80000)>>8);
    }
}

static inline void rgb32tobgr16_mmxext(const uint8_t *src, uint8_t *dst, int src_size)
{
    const uint8_t *s = src;
    const uint8_t *end;
    const uint8_t *mm_end;
    uint16_t *d = (uint16_t *)dst;
    end = s + src_size;
    __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       4(%1), %%mm3    \n\t"
            "punpckldq  8(%1), %%mm0    \n\t"
            "punpckldq 12(%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"
            :: "r"(d),"r"(s),"m"(blue_16mask):"memory");
        d += 4;
        s += 16;
    }
    __asm__ volatile(SFENCE:::"memory");
    __asm__ volatile(EMMS:::"memory");
    while (s < end) {
        register int rgb = *(const uint32_t*)s; s += 4;
        *d++ = ((rgb&0xF8)<<8) + ((rgb&0xFC00)>>5) + ((rgb&0xF80000)>>19);
    }
}

static inline void rgb32to15_mmxext(const uint8_t *src, uint8_t *dst, int src_size)
{
    const uint8_t *s = src;
    const uint8_t *end;
    const uint8_t *mm_end;
    uint16_t *d = (uint16_t *)dst;
    end = s + src_size;
    mm_end = end - 15;
    __asm__ volatile(
        "movq           %3, %%mm5   \n\t"
        "movq           %4, %%mm6   \n\t"
        "movq           %5, %%mm7   \n\t"
        "jmp            2f          \n\t"
        ".p2align        4          \n\t"
        "1:                         \n\t"
        PREFETCH"   32(%1)          \n\t"
        "movd         (%1), %%mm0   \n\t"
        "movd        4(%1), %%mm3   \n\t"
        "punpckldq   8(%1), %%mm0   \n\t"
        "punpckldq  12(%1), %%mm3   \n\t"
        "movq        %%mm0, %%mm1   \n\t"
        "movq        %%mm3, %%mm4   \n\t"
        "pand        %%mm6, %%mm0   \n\t"
        "pand        %%mm6, %%mm3   \n\t"
        "pmaddwd     %%mm7, %%mm0   \n\t"
        "pmaddwd     %%mm7, %%mm3   \n\t"
        "pand        %%mm5, %%mm1   \n\t"
        "pand        %%mm5, %%mm4   \n\t"
        "por         %%mm1, %%mm0   \n\t"
        "por         %%mm4, %%mm3   \n\t"
        "psrld          $6, %%mm0   \n\t"
        "pslld         $10, %%mm3   \n\t"
        "por         %%mm3, %%mm0   \n\t"
        MOVNTQ"      %%mm0, (%0)    \n\t"
        "add           $16,  %1     \n\t"
        "add            $8,  %0     \n\t"
        "2:                         \n\t"
        "cmp            %2,  %1     \n\t"
        " jb            1b          \n\t"
        : "+r" (d), "+r"(s)
        : "r" (mm_end), "m" (mask3215g), "m" (mask3216br), "m" (mul3215)
    );
    __asm__ volatile(SFENCE:::"memory");
    __asm__ volatile(EMMS:::"memory");
    while (s < end) {
        register int rgb = *(const uint32_t*)s; s += 4;
        *d++ = ((rgb&0xFF)>>3) + ((rgb&0xF800)>>6) + ((rgb&0xF80000)>>9);
    }
}

static inline void rgb32tobgr15_mmxext(const uint8_t *src, uint8_t *dst, int src_size)
{
    const uint8_t *s = src;
    const uint8_t *end;
    const uint8_t *mm_end;
    uint16_t *d = (uint16_t *)dst;
    end = s + src_size;
    __asm__ volatile(PREFETCH"    %0"::"m"(*src):"memory");
    __asm__ volatile(
        "movq          %0, %%mm7    \n\t"
        "movq          %1, %%mm6    \n\t"
        ::"m"(red_15mask),"m"(green_15mask));
    mm_end = end - 15;
    while (s < mm_end) {
        __asm__ volatile(
            PREFETCH"  32(%1)           \n\t"
            "movd        (%1), %%mm0    \n\t"
            "movd       4(%1), %%mm3    \n\t"
            "punpckldq  8(%1), %%mm0    \n\t"
            "punpckldq 12(%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         $7, %%mm0    \n\t"
            "psllq         $7, %%mm3    \n\t"
            "pand       %%mm7, %%mm0    \n\t"
            "pand       %%mm7, %%mm3    \n\t"
            "psrlq         $6, %%mm1    \n\t"
            "psrlq         $6, %%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"
            ::"r"(d),"r"(s),"m"(blue_15mask):"memory");
        d += 4;
        s += 16;
    }
    __asm__ volatile(SFENCE:::"memory");
    __asm__ volatile(EMMS:::"memory");
    while (s < end) {
        register int rgb = *(const uint32_t*)s; s += 4;
        *d++ = ((rgb&0xF8)<<7) + ((rgb&0xF800)>>6) + ((rgb&0xF80000)>>19);
    }
}

static inline void rgb24tobgr16_mmxext(const uint8_t *src, uint8_t *dst, int src_size)
{
    const uint8_t *s = src;
    const uint8_t *end;
    const uint8_t *mm_end;
    uint16_t *d = (uint16_t *)dst;
    end = s + src_size;
    __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 - 11;
    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"
            "psrlq         $3, %%mm0    \n\t"
            "psrlq         $3, %%mm3    \n\t"
            "pand          %2, %%mm0    \n\t"
            "pand          %2, %%mm3    \n\t"
            "psrlq         $5, %%mm1    \n\t"
            "psrlq         $5, %%mm4    \n\t"
            "pand       %%mm6, %%mm1    \n\t"
            "pand       %%mm6, %%mm4    \n\t"
            "psrlq         $8, %%mm2    \n\t"
            "psrlq         $8, %%mm5    \n\t"
            "pand       %%mm7, %%mm2    \n\t"
            "pand       %%mm7, %%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"
            ::"r"(d),"r"(s),"m"(blue_16mask):"memory");
        d += 4;
        s += 12;
    }
    __asm__ volatile(SFENCE:::"memory");
    __asm__ volatile(EMMS:::"memory");
    while (s < end) {
        const int b = *s++;
        const int g = *s++;
        const int r = *s++;
        *d++ = (b>>3) | ((g&0xFC)<<3) | ((r&0xF8)<<8);
    }
}

static inline void rgb24to16_mmxext(const uint8_t *src, uint8_t *dst, int src_size)
{
    const uint8_t *s = src;
    const uint8_t *end;
    const uint8_t *mm_end;
    uint16_t *d = (uint16_t *)dst;
    end = s + src_size;
    __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"
            ::"r"(d),"r"(s),"m"(blue_16mask):"memory");
        d += 4;
        s += 12;
    }
    __asm__ volatile(SFENCE:::"memory");
    __asm__ volatile(EMMS:::"memory");
    while (s < end) {
        const int r = *s++;
        const int g = *s++;
        const int b = *s++;
        *d++ = (b>>3) | ((g&0xFC)<<3) | ((r&0xF8)<<8);
    }
}

static inline void rgb24tobgr15_mmxext(const uint8_t *src, uint8_t *dst, int src_size)
{
    const uint8_t *s = src;
    const uint8_t *end;
    const uint8_t *mm_end;
    uint16_t *d = (uint16_t *)dst;
    end = s + src_size;
    __asm__ volatile(PREFETCH"    %0"::"m"(*src):"memory");
    __asm__ volatile(
        "movq          %0, %%mm7    \n\t"
        "movq          %1, %%mm6    \n\t"
        ::"m"(red_15mask),"m"(green_15mask));
    mm_end = end - 11;
    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"
            "psrlq         $3, %%mm0    \n\t"
            "psrlq         $3, %%mm3    \n\t"
            "pand          %2, %%mm0    \n\t"
            "pand          %2, %%mm3    \n\t"
            "psrlq         $6, %%mm1    \n\t"
            "psrlq         $6, %%mm4    \n\t"
            "pand       %%mm6, %%mm1    \n\t"
            "pand       %%mm6, %%mm4    \n\t"
            "psrlq         $9, %%mm2    \n\t"
            "psrlq         $9, %%mm5    \n\t"
            "pand       %%mm7, %%mm2    \n\t"
            "pand       %%mm7, %%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"
            ::"r"(d),"r"(s),"m"(blue_15mask):"memory");
        d += 4;
        s += 12;
    }
    __asm__ volatile(SFENCE:::"memory");
    __asm__ volatile(EMMS:::"memory");
    while (s < end) {
        const int b = *s++;
        const int g = *s++;
        const int r = *s++;
        *d++ = (b>>3) | ((g&0xF8)<<2) | ((r&0xF8)<<7);
    }
}

static inline void rgb24to15_mmxext(const uint8_t *src, uint8_t *dst, int src_size)
{
    const uint8_t *s = src;
    const uint8_t *end;
    const uint8_t *mm_end;
    uint16_t *d = (uint16_t *)dst;
    end = s + src_size;
    __asm__ volatile(PREFETCH"    %0"::"m"(*src):"memory");
    __asm__ volatile(
        "movq         %0, %%mm7     \n\t"
        "movq         %1, %%mm6     \n\t"
        ::"m"(red_15mask),"m"(green_15mask));
    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        $7, %%mm0     \n\t"
            "psllq        $7, %%mm3     \n\t"
            "pand      %%mm7, %%mm0     \n\t"
            "pand      %%mm7, %%mm3     \n\t"
            "psrlq        $6, %%mm1     \n\t"
            "psrlq        $6, %%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"
            ::"r"(d),"r"(s),"m"(blue_15mask):"memory");
        d += 4;
        s += 12;
    }
    __asm__ volatile(SFENCE:::"memory");
    __asm__ volatile(EMMS:::"memory");
    while (s < end) {
        const int r = *s++;
        const int g = *s++;
        const int b = *s++;
        *d++ = (b>>3) | ((g&0xF8)<<2) | ((r&0xF8)<<7);
    }
}

static inline void rgb15tobgr24_mmxext(const uint8_t *src, uint8_t *dst, int src_size)
{
    const uint16_t *end;
    const uint16_t *mm_end;
    uint8_t *d = 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         $5, %%mm0    \n\t"
            "pmulhw        "MANGLE(mul15_mid)", %%mm0    \n\t"
            "pmulhw        "MANGLE(mul15_mid)", %%mm1    \n\t"
            "pmulhw        "MANGLE(mul15_hi)", %%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         $5, %%mm0    \n\t"
            "pmulhw        "MANGLE(mul15_mid)", %%mm0    \n\t"
            "pmulhw        "MANGLE(mul15_mid)", %%mm1    \n\t"
            "pmulhw        "MANGLE(mul15_hi)", %%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)
            :"r"(s),"m"(mask15b),"m"(mask15g),"m"(mask15r), "m"(mmx_null)
             NAMED_CONSTRAINTS_ADD(mul15_mid,mul15_hi)
            :"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

            :: "r"(d), "m"(*s)
              NAMED_CONSTRAINTS_ADD(mask24l,mask24h)
            :"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) | ((bgr&0x1F)>>2);
        *d++ = ((bgr&0x3E0)>>2) | ((bgr&0x3E0)>>7);
        *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
    }
}

static inline void rgb16tobgr24_mmxext(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         $5, %%mm0    \n\t"
            "psrlq         $1, %%mm2    \n\t"
            "pmulhw        "MANGLE(mul15_mid)", %%mm0    \n\t"
            "pmulhw        "MANGLE(mul16_mid)", %%mm1    \n\t"
            "pmulhw        "MANGLE(mul15_hi)", %%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         $5, %%mm0    \n\t"
            "psrlq         $1, %%mm2    \n\t"
            "pmulhw        "MANGLE(mul15_mid)", %%mm0    \n\t"
            "pmulhw        "MANGLE(mul16_mid)", %%mm1    \n\t"
            "pmulhw        "MANGLE(mul15_hi)", %%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)
            :"r"(s),"m"(mask16b),"m"(mask16g),"m"(mask16r),"m"(mmx_null)
             NAMED_CONSTRAINTS_ADD(mul15_mid,mul16_mid,mul15_hi)
            :"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

            :: "r"(d), "m"(*s)
              NAMED_CONSTRAINTS_ADD(mask24l,mask24h)
            :"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) | ((bgr&0x1F)>>2);
        *d++ = ((bgr&0x7E0)>>3) | ((bgr&0x7E0)>>9);
        *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
    }
}

/*
 * mm0 = 00 B3 00 B2 00 B1 00 B0
 * mm1 = 00 G3 00 G2 00 G1 00 G0
 * mm2 = 00 R3 00 R2 00 R1 00 R0
 * mm6 = FF FF FF FF FF FF FF FF
 * mm7 = 00 00 00 00 00 00 00 00
 */
#define PACK_RGB32 \
    "packuswb   %%mm7, %%mm0    \n\t" /* 00 00 00 00 B3 B2 B1 B0 */ \
    "packuswb   %%mm7, %%mm1    \n\t" /* 00 00 00 00 G3 G2 G1 G0 */ \
    "packuswb   %%mm7, %%mm2    \n\t" /* 00 00 00 00 R3 R2 R1 R0 */ \
    "punpcklbw  %%mm1, %%mm0    \n\t" /* G3 B3 G2 B2 G1 B1 G0 B0 */ \
    "punpcklbw  %%mm6, %%mm2    \n\t" /* FF R3 FF R2 FF R1 FF R0 */ \
    "movq       %%mm0, %%mm3    \n\t"                               \
    "punpcklwd  %%mm2, %%mm0    \n\t" /* FF R1 G1 B1 FF R0 G0 B0 */ \
    "punpckhwd  %%mm2, %%mm3    \n\t" /* FF R3 G3 B3 FF R2 G2 B2 */ \
    MOVNTQ"     %%mm0,  (%0)    \n\t"                               \
    MOVNTQ"     %%mm3, 8(%0)    \n\t"                               \

static inline void rgb15to32_mmxext(const uint8_t *src, uint8_t *dst, int src_size)
{
    const uint16_t *end;
    const uint16_t *mm_end;
    uint8_t *d = dst;
    const uint16_t *s = (const uint16_t *)src;
    end = s + src_size/2;
    __asm__ volatile(PREFETCH"    %0"::"m"(*s):"memory");
    __asm__ volatile("pxor    %%mm7,%%mm7    \n\t":::"memory");
    __asm__ volatile("pcmpeqd %%mm6,%%mm6    \n\t":::"memory");
    mm_end = end - 3;
    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         $5, %%mm0    \n\t"
            "pmulhw        %5, %%mm0    \n\t"
            "pmulhw        %5, %%mm1    \n\t"
            "pmulhw        "MANGLE(mul15_hi)", %%mm2    \n\t"
            PACK_RGB32
            ::"r"(d),"r"(s),"m"(mask15b),"m"(mask15g),"m"(mask15r) ,"m"(mul15_mid)
              NAMED_CONSTRAINTS_ADD(mul15_hi)
            :"memory");
        d += 16;
        s += 4;
    }
    __asm__ volatile(SFENCE:::"memory");
    __asm__ volatile(EMMS:::"memory");
    while (s < end) {
        register uint16_t bgr;
        bgr = *s++;
        *d++ = ((bgr&0x1F)<<3) | ((bgr&0x1F)>>2);
        *d++ = ((bgr&0x3E0)>>2) | ((bgr&0x3E0)>>7);
        *d++ = ((bgr&0x7C00)>>7) | ((bgr&0x7C00)>>12);
        *d++ = 255;
    }
}

static inline void rgb16to32_mmxext(const uint8_t *src, uint8_t *dst, int src_size)
{
    const uint16_t *end;
    const uint16_t *mm_end;
    uint8_t *d = dst;
    const uint16_t *s = (const uint16_t*)src;
    end = s + src_size/2;
    __asm__ volatile(PREFETCH"    %0"::"m"(*s):"memory");
    __asm__ volatile("pxor    %%mm7,%%mm7    \n\t":::"memory");
    __asm__ volatile("pcmpeqd %%mm6,%%mm6    \n\t":::"memory");
    mm_end = end - 3;
    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         $5, %%mm0    \n\t"
            "psrlq         $1, %%mm2    \n\t"
            "pmulhw        %5, %%mm0    \n\t"
            "pmulhw        "MANGLE(mul16_mid)", %%mm1    \n\t"
            "pmulhw        "MANGLE(mul15_hi)", %%mm2    \n\t"
            PACK_RGB32
            ::"r"(d),"r"(s),"m"(mask16b),"m"(mask16g),"m"(mask16r),"m"(mul15_mid)
              NAMED_CONSTRAINTS_ADD(mul16_mid,mul15_hi)
            :"memory");
        d += 16;
        s += 4;
    }
    __asm__ volatile(SFENCE:::"memory");
    __asm__ volatile(EMMS:::"memory");
    while (s < end) {
        register uint16_t bgr;
        bgr = *s++;
        *d++ = ((bgr&0x1F)<<3) | ((bgr&0x1F)>>2);
        *d++ = ((bgr&0x7E0)>>3) | ((bgr&0x7E0)>>9);
        *d++ = ((bgr&0xF800)>>8) | ((bgr&0xF800)>>13);
        *d++ = 255;
    }
}

static inline void rgb24tobgr24_mmxext(const uint8_t *src, uint8_t *dst, int src_size)
{
    x86_reg mmx_size= 23 - src_size;
    __asm__ volatile (
        "test             %%"FF_REG_a", %%"FF_REG_a"    \n\t"
        "jns                     2f                     \n\t"
        "movq     "MANGLE(mask24r)", %%mm5              \n\t"
        "movq     "MANGLE(mask24g)", %%mm6              \n\t"
        "movq     "MANGLE(mask24b)", %%mm7              \n\t"
        ".p2align                 4                     \n\t"
        "1:                                             \n\t"
        PREFETCH" 32(%1, %%"FF_REG_a")                  \n\t"
        "movq    (%1, %%"FF_REG_a"), %%mm0              \n\t" // BGR BGR BG
        "movq    (%1, %%"FF_REG_a"), %%mm1              \n\t" // BGR BGR BG
        "movq   2(%1, %%"FF_REG_a"), %%mm2              \n\t" // R BGR BGR B
        "psllq                  $16, %%mm0              \n\t" // 00 BGR BGR
        "pand                 %%mm5, %%mm0              \n\t"
        "pand                 %%mm6, %%mm1              \n\t"
        "pand                 %%mm7, %%mm2              \n\t"
        "por                  %%mm0, %%mm1              \n\t"
        "por                  %%mm2, %%mm1              \n\t"
        "movq   6(%1, %%"FF_REG_a"), %%mm0              \n\t" // BGR BGR BG
        MOVNTQ"               %%mm1,(%2, %%"FF_REG_a")  \n\t" // RGB RGB RG
        "movq   8(%1, %%"FF_REG_a"), %%mm1              \n\t" // R BGR BGR B
        "movq  10(%1, %%"FF_REG_a"), %%mm2              \n\t" // GR BGR BGR
        "pand                 %%mm7, %%mm0              \n\t"
        "pand                 %%mm5, %%mm1              \n\t"
        "pand                 %%mm6, %%mm2              \n\t"
        "por                  %%mm0, %%mm1              \n\t"
        "por                  %%mm2, %%mm1              \n\t"
        "movq  14(%1, %%"FF_REG_a"), %%mm0              \n\t" // R BGR BGR B
        MOVNTQ"               %%mm1, 8(%2, %%"FF_REG_a")\n\t" // B RGB RGB R
        "movq  16(%1, %%"FF_REG_a"), %%mm1              \n\t" // GR BGR BGR
        "movq  18(%1, %%"FF_REG_a"), %%mm2              \n\t" // BGR BGR BG
        "pand                 %%mm6, %%mm0              \n\t"
        "pand                 %%mm7, %%mm1              \n\t"
        "pand                 %%mm5, %%mm2              \n\t"
        "por                  %%mm0, %%mm1              \n\t"
        "por                  %%mm2, %%mm1              \n\t"
        MOVNTQ"               %%mm1, 16(%2, %%"FF_REG_a") \n\t"
        "add                    $24, %%"FF_REG_a"       \n\t"
        " js                     1b                     \n\t"
        "2:                                             \n\t"
        : "+a" (mmx_size)
        : "r" (src-mmx_size), "r"(dst-mmx_size)
          NAMED_CONSTRAINTS_ADD(mask24r,mask24g,mask24b)
    );

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

    if (mmx_size==23) return; //finished, was multiple of 8

    src+= src_size;
    dst+= src_size;
    src_size= 23-mmx_size;
    src-= src_size;
    dst-= src_size;
    for (unsigned i = 0; i < src_size; i +=3) {
        register uint8_t x;
        x          = src[i + 2];
        dst[i + 1] = src[i + 1];
        dst[i + 2] = src[i + 0];
        dst[i + 0] = x;
    }
}

static inline void yuvPlanartoyuy2_mmxext(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
                                           int width, int height,
                                           int lumStride, int chromStride, int dstStride, int vertLumPerChroma)
{
    const x86_reg chromWidth= width>>1;
    for (int y = 0; y < height; y++) {
        //FIXME handle 2 lines at once (fewer prefetches, reuse some chroma, but very likely memory-limited anyway)
        __asm__ volatile(
            "xor                 %%"FF_REG_a", %%"FF_REG_a" \n\t"
            ".p2align                    4              \n\t"
            "1:                                         \n\t"
            PREFETCH" 32(%1, %%"FF_REG_a", 2)           \n\t"
            PREFETCH" 32(%2, %%"FF_REG_a")              \n\t"
            PREFETCH" 32(%3, %%"FF_REG_a")              \n\t"
            "movq       (%2, %%"FF_REG_a"), %%mm0       \n\t" // U(0)
            "movq                    %%mm0, %%mm2       \n\t" // U(0)
            "movq       (%3, %%"FF_REG_a"), %%mm1       \n\t" // V(0)
            "punpcklbw               %%mm1, %%mm0       \n\t" // UVUV UVUV(0)
            "punpckhbw               %%mm1, %%mm2       \n\t" // UVUV UVUV(8)

            "movq     (%1, %%"FF_REG_a",2), %%mm3       \n\t" // Y(0)
            "movq    8(%1, %%"FF_REG_a",2), %%mm5       \n\t" // Y(8)
            "movq                    %%mm3, %%mm4       \n\t" // Y(0)
            "movq                    %%mm5, %%mm6       \n\t" // Y(8)
            "punpcklbw               %%mm0, %%mm3       \n\t" // YUYV YUYV(0)
            "punpckhbw               %%mm0, %%mm4       \n\t" // YUYV YUYV(4)
            "punpcklbw               %%mm2, %%mm5       \n\t" // YUYV YUYV(8)
            "punpckhbw               %%mm2, %%mm6       \n\t" // YUYV YUYV(12)

            MOVNTQ"                  %%mm3,   (%0, %%"FF_REG_a", 4)    \n\t"
            MOVNTQ"                  %%mm4,  8(%0, %%"FF_REG_a", 4)    \n\t"
            MOVNTQ"                  %%mm5, 16(%0, %%"FF_REG_a", 4)    \n\t"
            MOVNTQ"                  %%mm6, 24(%0, %%"FF_REG_a", 4)    \n\t"

            "add                        $8, %%"FF_REG_a" \n\t"
            "cmp                        %4, %%"FF_REG_a" \n\t"
            " jb                        1b               \n\t"
            ::"r"(dst), "r"(ysrc), "r"(usrc), "r"(vsrc), "g" (chromWidth)
            : "%"FF_REG_a
        );
        if ((y&(vertLumPerChroma-1)) == vertLumPerChroma-1) {
            usrc += chromStride;
            vsrc += chromStride;
        }
        ysrc += lumStride;
        dst  += dstStride;
    }
    __asm__(EMMS"       \n\t"
            SFENCE"     \n\t"
            :::"memory");
}

/**
 * Height should be a multiple of 2 and width should be a multiple of 16.
 * (If this is a problem for anyone then tell me, and I will fix it.)
 */
static inline void yv12toyuy2_mmxext(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
                                      int width, int height,
                                      int lumStride, int chromStride, int dstStride)
{
    //FIXME interpolate chroma
    yuvPlanartoyuy2_mmxext(ysrc, usrc, vsrc, dst, width, height, lumStride, chromStride, dstStride, 2);
}

static inline void yuvPlanartouyvy_mmxext(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
                                           int width, int height,
                                           int lumStride, int chromStride, int dstStride, int vertLumPerChroma)
{
    const x86_reg chromWidth= width>>1;
    for (int y = 0; y < height; y++) {
        //FIXME handle 2 lines at once (fewer prefetches, reuse some chroma, but very likely memory-limited anyway)
        __asm__ volatile(
            "xor             %%"FF_REG_a", %%"FF_REG_a" \n\t"
            ".p2align                   4               \n\t"
            "1:                                         \n\t"
            PREFETCH" 32(%1, %%"FF_REG_a", 2)           \n\t"
            PREFETCH" 32(%2, %%"FF_REG_a")              \n\t"
            PREFETCH" 32(%3, %%"FF_REG_a")              \n\t"
            "movq      (%2, %%"FF_REG_a"), %%mm0        \n\t" // U(0)
            "movq                   %%mm0, %%mm2        \n\t" // U(0)
            "movq      (%3, %%"FF_REG_a"), %%mm1        \n\t" // V(0)
            "punpcklbw              %%mm1, %%mm0        \n\t" // UVUV UVUV(0)
            "punpckhbw              %%mm1, %%mm2        \n\t" // UVUV UVUV(8)

            "movq    (%1, %%"FF_REG_a",2), %%mm3        \n\t" // Y(0)
            "movq   8(%1, %%"FF_REG_a",2), %%mm5        \n\t" // Y(8)
            "movq                   %%mm0, %%mm4        \n\t" // Y(0)
            "movq                   %%mm2, %%mm6        \n\t" // Y(8)
            "punpcklbw              %%mm3, %%mm0        \n\t" // YUYV YUYV(0)
            "punpckhbw              %%mm3, %%mm4        \n\t" // YUYV YUYV(4)
            "punpcklbw              %%mm5, %%mm2        \n\t" // YUYV YUYV(8)
            "punpckhbw              %%mm5, %%mm6        \n\t" // YUYV YUYV(12)

            MOVNTQ"                 %%mm0,   (%0, %%"FF_REG_a", 4)     \n\t"
            MOVNTQ"                 %%mm4,  8(%0, %%"FF_REG_a", 4)     \n\t"
            MOVNTQ"                 %%mm2, 16(%0, %%"FF_REG_a", 4)     \n\t"
            MOVNTQ"                 %%mm6, 24(%0, %%"FF_REG_a", 4)     \n\t"

            "add                       $8, %%"FF_REG_a" \n\t"
            "cmp                       %4, %%"FF_REG_a" \n\t"
            " jb                       1b               \n\t"
            ::"r"(dst), "r"(ysrc), "r"(usrc), "r"(vsrc), "g" (chromWidth)
            : "%"FF_REG_a
        );
        if ((y&(vertLumPerChroma-1)) == vertLumPerChroma-1) {
            usrc += chromStride;
            vsrc += chromStride;
        }
        ysrc += lumStride;
        dst += dstStride;
    }
    __asm__(EMMS"       \n\t"
            SFENCE"     \n\t"
            :::"memory");
}

/**
 * Height should be a multiple of 2 and width should be a multiple of 16
 * (If this is a problem for anyone then tell me, and I will fix it.)
 */
static inline void yv12touyvy_mmxext(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
                                      int width, int height,
                                      int lumStride, int chromStride, int dstStride)
{
    //FIXME interpolate chroma
    yuvPlanartouyvy_mmxext(ysrc, usrc, vsrc, dst, width, height, lumStride, chromStride, dstStride, 2);
}

/**
 * Width should be a multiple of 16.
 */
static inline void yuv422ptouyvy_mmxext(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
                                         int width, int height,
                                         int lumStride, int chromStride, int dstStride)
{
    yuvPlanartouyvy_mmxext(ysrc, usrc, vsrc, dst, width, height, lumStride, chromStride, dstStride, 1);
}

/**
 * Width should be a multiple of 16.
 */
static inline void yuv422ptoyuy2_mmxext(const uint8_t *ysrc, const uint8_t *usrc, const uint8_t *vsrc, uint8_t *dst,
                                         int width, int height,
                                         int lumStride, int chromStride, int dstStride)
{
    yuvPlanartoyuy2_mmxext(ysrc, usrc, vsrc, dst, width, height, lumStride, chromStride, dstStride, 1);
}

/**
 * Height should be a multiple of 2 and width should be a multiple of 16.
 * (If this is a problem for anyone then tell me, and I will fix it.)
 */
static inline void yuy2toyv12_mmxext(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
                                      int width, int height,
                                      int lumStride, int chromStride, int srcStride)
{
    const x86_reg chromWidth= width>>1;
    for (int y = 0; y < height; y += 2) {
        __asm__ volatile(
            "xor              %%"FF_REG_a", %%"FF_REG_a"\n\t"
            "pcmpeqw                 %%mm7, %%mm7       \n\t"
            "psrlw                      $8, %%mm7       \n\t" // FF,00,FF,00...
            ".p2align                    4              \n\t"
            "1:                \n\t"
            PREFETCH" 64(%0, %%"FF_REG_a", 4)           \n\t"
            "movq    (%0, %%"FF_REG_a", 4), %%mm0       \n\t" // YUYV YUYV(0)
            "movq   8(%0, %%"FF_REG_a", 4), %%mm1       \n\t" // YUYV YUYV(4)
            "movq                    %%mm0, %%mm2       \n\t" // YUYV YUYV(0)
            "movq                    %%mm1, %%mm3       \n\t" // YUYV YUYV(4)
            "psrlw                      $8, %%mm0       \n\t" // U0V0 U0V0(0)
            "psrlw                      $8, %%mm1       \n\t" // U0V0 U0V0(4)
            "pand                    %%mm7, %%mm2       \n\t" // Y0Y0 Y0Y0(0)
            "pand                    %%mm7, %%mm3       \n\t" // Y0Y0 Y0Y0(4)
            "packuswb                %%mm1, %%mm0       \n\t" // UVUV UVUV(0)
            "packuswb                %%mm3, %%mm2       \n\t" // YYYY YYYY(0)

            MOVNTQ"                  %%mm2, (%1, %%"FF_REG_a", 2) \n\t"

            "movq  16(%0, %%"FF_REG_a", 4), %%mm1       \n\t" // YUYV YUYV(8)
            "movq  24(%0, %%"FF_REG_a", 4), %%mm2       \n\t" // YUYV YUYV(12)
            "movq                    %%mm1, %%mm3       \n\t" // YUYV YUYV(8)
            "movq                    %%mm2, %%mm4       \n\t" // YUYV YUYV(12)
            "psrlw                      $8, %%mm1       \n\t" // U0V0 U0V0(8)
            "psrlw                      $8, %%mm2       \n\t" // U0V0 U0V0(12)
            "pand                    %%mm7, %%mm3       \n\t" // Y0Y0 Y0Y0(8)
            "pand                    %%mm7, %%mm4       \n\t" // Y0Y0 Y0Y0(12)
            "packuswb                %%mm2, %%mm1       \n\t" // UVUV UVUV(8)
            "packuswb                %%mm4, %%mm3       \n\t" // YYYY YYYY(8)

            MOVNTQ"                  %%mm3, 8(%1, %%"FF_REG_a", 2) \n\t"

            "movq                    %%mm0, %%mm2       \n\t" // UVUV UVUV(0)
            "movq                    %%mm1, %%mm3       \n\t" // UVUV UVUV(8)
            "psrlw                      $8, %%mm0       \n\t" // V0V0 V0V0(0)
            "psrlw                      $8, %%mm1       \n\t" // V0V0 V0V0(8)
            "pand                    %%mm7, %%mm2       \n\t" // U0U0 U0U0(0)
            "pand                    %%mm7, %%mm3       \n\t" // U0U0 U0U0(8)
            "packuswb                %%mm1, %%mm0       \n\t" // VVVV VVVV(0)
            "packuswb                %%mm3, %%mm2       \n\t" // UUUU UUUU(0)

            MOVNTQ"                  %%mm0, (%3, %%"FF_REG_a")     \n\t"
            MOVNTQ"                  %%mm2, (%2, %%"FF_REG_a")     \n\t"

            "add                        $8, %%"FF_REG_a" \n\t"
            "cmp                        %4, %%"FF_REG_a" \n\t"
            " jb                        1b               \n\t"
            ::"r"(src), "r"(ydst), "r"(udst), "r"(vdst), "g" (chromWidth)
            : "memory", "%"FF_REG_a
        );

        ydst += lumStride;
        src  += srcStride;

        __asm__ volatile(
            "xor              %%"FF_REG_a", %%"FF_REG_a"\n\t"
            ".p2align                    4              \n\t"
            "1:                                         \n\t"
            PREFETCH" 64(%0, %%"FF_REG_a", 4)           \n\t"
            "movq    (%0, %%"FF_REG_a", 4), %%mm0       \n\t" // YUYV YUYV(0)
            "movq   8(%0, %%"FF_REG_a", 4), %%mm1       \n\t" // YUYV YUYV(4)
            "movq  16(%0, %%"FF_REG_a", 4), %%mm2       \n\t" // YUYV YUYV(8)
            "movq  24(%0, %%"FF_REG_a", 4), %%mm3       \n\t" // YUYV YUYV(12)
            "pand                    %%mm7, %%mm0       \n\t" // Y0Y0 Y0Y0(0)
            "pand                    %%mm7, %%mm1       \n\t" // Y0Y0 Y0Y0(4)
            "pand                    %%mm7, %%mm2       \n\t" // Y0Y0 Y0Y0(8)
            "pand                    %%mm7, %%mm3       \n\t" // Y0Y0 Y0Y0(12)
            "packuswb                %%mm1, %%mm0       \n\t" // YYYY YYYY(0)
            "packuswb                %%mm3, %%mm2       \n\t" // YYYY YYYY(8)

            MOVNTQ"                  %%mm0,  (%1, %%"FF_REG_a", 2) \n\t"
            MOVNTQ"                  %%mm2, 8(%1, %%"FF_REG_a", 2) \n\t"

            "add                        $8, %%"FF_REG_a"\n\t"
            "cmp                        %4, %%"FF_REG_a"\n\t"
            " jb                        1b              \n\t"

            ::"r"(src), "r"(ydst), "r"(udst), "r"(vdst), "g" (chromWidth)
            : "memory", "%"FF_REG_a
        );
        udst += chromStride;
        vdst += chromStride;
        ydst += lumStride;
        src  += srcStride;
    }
    __asm__ volatile(EMMS"       \n\t"
                     SFENCE"     \n\t"
                     :::"memory");
}

static inline void planar2x_mmxext(const uint8_t *src, uint8_t *dst, int srcWidth, int srcHeight, int srcStride, int dstStride)
{
    dst[0]= src[0];

    // first line
    for (int x = 0; x < srcWidth - 1; x++) {
        dst[2*x+1]= (3*src[x] +   src[x+1])>>2;
        dst[2*x+2]= (  src[x] + 3*src[x+1])>>2;
    }
    dst[2*srcWidth-1]= src[srcWidth-1];

    dst+= dstStride;

    for (int y = 1; y < srcHeight; y++) {
        x86_reg mmxSize= srcWidth&~15;

        if (mmxSize) {
        __asm__ volatile(
            "mov                       %4, %%"FF_REG_a" \n\t"
            "movq        "MANGLE(mmx_ff)", %%mm0    \n\t"
            "movq      (%0, %%"FF_REG_a"), %%mm4    \n\t"
            "movq                   %%mm4, %%mm2    \n\t"
            "psllq                     $8, %%mm4    \n\t"
            "pand                   %%mm0, %%mm2    \n\t"
            "por                    %%mm2, %%mm4    \n\t"
            "movq      (%1, %%"FF_REG_a"), %%mm5    \n\t"
            "movq                   %%mm5, %%mm3    \n\t"
            "psllq                     $8, %%mm5    \n\t"
            "pand                   %%mm0, %%mm3    \n\t"
            "por                    %%mm3, %%mm5    \n\t"
            "1:                                     \n\t"
            "movq      (%0, %%"FF_REG_a"), %%mm0    \n\t"
            "movq      (%1, %%"FF_REG_a"), %%mm1    \n\t"
            "movq     1(%0, %%"FF_REG_a"), %%mm2    \n\t"
            "movq     1(%1, %%"FF_REG_a"), %%mm3    \n\t"
            PAVGB"                  %%mm0, %%mm5    \n\t"
            PAVGB"                  %%mm0, %%mm3    \n\t"
            PAVGB"                  %%mm0, %%mm5    \n\t"
            PAVGB"                  %%mm0, %%mm3    \n\t"
            PAVGB"                  %%mm1, %%mm4    \n\t"
            PAVGB"                  %%mm1, %%mm2    \n\t"
            PAVGB"                  %%mm1, %%mm4    \n\t"
            PAVGB"                  %%mm1, %%mm2    \n\t"
            "movq                   %%mm5, %%mm7    \n\t"
            "movq                   %%mm4, %%mm6    \n\t"
            "punpcklbw              %%mm3, %%mm5    \n\t"
            "punpckhbw              %%mm3, %%mm7    \n\t"
            "punpcklbw              %%mm2, %%mm4    \n\t"
            "punpckhbw              %%mm2, %%mm6    \n\t"
            MOVNTQ"                 %%mm5,  (%2, %%"FF_REG_a", 2)  \n\t"
            MOVNTQ"                 %%mm7, 8(%2, %%"FF_REG_a", 2)  \n\t"
            MOVNTQ"                 %%mm4,  (%3, %%"FF_REG_a", 2)  \n\t"
            MOVNTQ"                 %%mm6, 8(%3, %%"FF_REG_a", 2)  \n\t"
            "add                       $8, %%"FF_REG_a"            \n\t"
            "movq    -1(%0, %%"FF_REG_a"), %%mm4    \n\t"
            "movq    -1(%1, %%"FF_REG_a"), %%mm5    \n\t"
            " js                       1b           \n\t"
            :: "r" (src + mmxSize  ), "r" (src + srcStride + mmxSize  ),
               "r" (dst + mmxSize*2), "r" (dst + dstStride + mmxSize*2),
               "g" (-mmxSize)
               NAMED_CONSTRAINTS_ADD(mmx_ff)
            : "%"FF_REG_a
        );
        } else {
            mmxSize = 1;
            dst[0]         = (src[0] * 3 + src[srcStride]) >> 2;
            dst[dstStride] = (src[0] + 3 * src[srcStride]) >> 2;
        }

        for (int x = mmxSize - 1; x < srcWidth - 1; x++) {
            dst[2*x          +1]= (3*src[x+0] +   src[x+srcStride+1])>>2;
            dst[2*x+dstStride+2]= (  src[x+0] + 3*src[x+srcStride+1])>>2;
            dst[2*x+dstStride+1]= (  src[x+1] + 3*src[x+srcStride  ])>>2;
            dst[2*x          +2]= (3*src[x+1] +   src[x+srcStride  ])>>2;
        }
        dst[srcWidth*2 -1            ]= (3*src[srcWidth-1] +   src[srcWidth-1 + srcStride])>>2;
        dst[srcWidth*2 -1 + dstStride]= (  src[srcWidth-1] + 3*src[srcWidth-1 + srcStride])>>2;

        dst+=dstStride*2;
        src+=srcStride;
    }

    // last line
    dst[0]= src[0];

    for (int x = 0; x < srcWidth - 1; x++) {
        dst[2*x+1]= (3*src[x] +   src[x+1])>>2;
        dst[2*x+2]= (  src[x] + 3*src[x+1])>>2;
    }
    dst[2*srcWidth-1]= src[srcWidth-1];

    __asm__ volatile(EMMS"       \n\t"
                     SFENCE"     \n\t"
                     :::"memory");
}

/**
 * Height should be a multiple of 2 and width should be a multiple of 2.
 * (If this is a problem for anyone then tell me, and I will fix it.)
 * Chrominance data is only taken from every second line,
 * others are ignored in the C version.
 * FIXME: Write HQ version.
 */
#if HAVE_7REGS
static inline void rgb24toyv12_mmxext(const uint8_t *src, uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
                                       int width, int height,
                                       int lumStride, int chromStride, int srcStride,
                                       int32_t *rgb2yuv)
{
#define BGR2Y_IDX "16*4+16*32"
#define BGR2U_IDX "16*4+16*33"
#define BGR2V_IDX "16*4+16*34"
    int y;
    const x86_reg chromWidth= width>>1;

    if (height > 2) {
        ff_rgb24toyv12_c(src, ydst, udst, vdst, width, 2, lumStride, chromStride, srcStride, rgb2yuv);
        src  += 2*srcStride;
        ydst += 2*lumStride;
        udst += chromStride;
        vdst += chromStride;
        height -= 2;
    }

    for (y = 0; y < height - 2; y += 2) {
        for (int i = 0; i < 2; i++) {
            __asm__ volatile(
                "mov                        %2, %%"FF_REG_a"\n\t"
                "movq          "BGR2Y_IDX"(%3), %%mm6       \n\t"
                "movq       "MANGLE(ff_w1111)", %%mm5       \n\t"
                "pxor                    %%mm7, %%mm7       \n\t"
                "lea (%%"FF_REG_a", %%"FF_REG_a", 2), %%"FF_REG_d" \n\t"
                ".p2align                    4              \n\t"
                "1:                                         \n\t"
                PREFETCH" 64(%0, %%"FF_REG_d")              \n\t"
                "movd       (%0, %%"FF_REG_d"), %%mm0       \n\t"
                "movd      3(%0, %%"FF_REG_d"), %%mm1       \n\t"
                "punpcklbw               %%mm7, %%mm0       \n\t"
                "punpcklbw               %%mm7, %%mm1       \n\t"
                "movd      6(%0, %%"FF_REG_d"), %%mm2       \n\t"
                "movd      9(%0, %%"FF_REG_d"), %%mm3       \n\t"
                "punpcklbw               %%mm7, %%mm2       \n\t"
                "punpcklbw               %%mm7, %%mm3       \n\t"
                "pmaddwd                 %%mm6, %%mm0       \n\t"
                "pmaddwd                 %%mm6, %%mm1       \n\t"
                "pmaddwd                 %%mm6, %%mm2       \n\t"
                "pmaddwd                 %%mm6, %%mm3       \n\t"
                "psrad                      $8, %%mm0       \n\t"
                "psrad                      $8, %%mm1       \n\t"
                "psrad                      $8, %%mm2       \n\t"
                "psrad                      $8, %%mm3       \n\t"
                "packssdw                %%mm1, %%mm0       \n\t"
                "packssdw                %%mm3, %%mm2       \n\t"
                "pmaddwd                 %%mm5, %%mm0       \n\t"
                "pmaddwd                 %%mm5, %%mm2       \n\t"
                "packssdw                %%mm2, %%mm0       \n\t"
                "psraw                      $7, %%mm0       \n\t"

                "movd     12(%0, %%"FF_REG_d"), %%mm4       \n\t"
                "movd     15(%0, %%"FF_REG_d"), %%mm1       \n\t"
                "punpcklbw               %%mm7, %%mm4       \n\t"
                "punpcklbw               %%mm7, %%mm1       \n\t"
                "movd     18(%0, %%"FF_REG_d"), %%mm2       \n\t"
                "movd     21(%0, %%"FF_REG_d"), %%mm3       \n\t"
                "punpcklbw               %%mm7, %%mm2       \n\t"
                "punpcklbw               %%mm7, %%mm3       \n\t"
                "pmaddwd                 %%mm6, %%mm4       \n\t"
                "pmaddwd                 %%mm6, %%mm1       \n\t"
                "pmaddwd                 %%mm6, %%mm2       \n\t"
                "pmaddwd                 %%mm6, %%mm3       \n\t"
                "psrad                      $8, %%mm4       \n\t"
                "psrad                      $8, %%mm1       \n\t"
                "psrad                      $8, %%mm2       \n\t"
                "psrad                      $8, %%mm3       \n\t"
                "packssdw                %%mm1, %%mm4       \n\t"
                "packssdw                %%mm3, %%mm2       \n\t"
                "pmaddwd                 %%mm5, %%mm4       \n\t"
                "pmaddwd                 %%mm5, %%mm2       \n\t"
                "add                       $24, %%"FF_REG_d"\n\t"
                "packssdw                %%mm2, %%mm4       \n\t"
                "psraw                      $7, %%mm4       \n\t"

                "packuswb                %%mm4, %%mm0       \n\t"
                "paddusb "MANGLE(ff_bgr2YOffset)", %%mm0    \n\t"

                MOVNTQ"                  %%mm0, (%1, %%"FF_REG_a") \n\t"
                "add                        $8,      %%"FF_REG_a"  \n\t"
                " js                        1b                     \n\t"
                : : "r" (src+width*3), "r" (ydst+width), "g" ((x86_reg)-width), "r"(rgb2yuv)
                  NAMED_CONSTRAINTS_ADD(ff_w1111,ff_bgr2YOffset)
                : "%"FF_REG_a, "%"FF_REG_d
            );
            ydst += lumStride;
            src  += srcStride;
        }
        src -= srcStride*2;
        __asm__ volatile(
            "mov                        %4, %%"FF_REG_a"\n\t"
            "movq       "MANGLE(ff_w1111)", %%mm5       \n\t"
            "movq          "BGR2U_IDX"(%5), %%mm6       \n\t"
            "pxor                    %%mm7, %%mm7       \n\t"
            "lea (%%"FF_REG_a", %%"FF_REG_a", 2), %%"FF_REG_d" \n\t"
            "add              %%"FF_REG_d", %%"FF_REG_d"\n\t"
            ".p2align                    4              \n\t"
            "1:                                         \n\t"
            PREFETCH" 64(%0, %%"FF_REG_d")              \n\t"
            PREFETCH" 64(%1, %%"FF_REG_d")              \n\t"
            "movq       (%0, %%"FF_REG_d"), %%mm0       \n\t"
            "movq       (%1, %%"FF_REG_d"), %%mm1       \n\t"
            "movq      6(%0, %%"FF_REG_d"), %%mm2       \n\t"
            "movq      6(%1, %%"FF_REG_d"), %%mm3       \n\t"
            PAVGB"                   %%mm1, %%mm0       \n\t"
            PAVGB"                   %%mm3, %%mm2       \n\t"
            "movq                    %%mm0, %%mm1       \n\t"
            "movq                    %%mm2, %%mm3       \n\t"
            "psrlq                     $24, %%mm0       \n\t"
            "psrlq                     $24, %%mm2       \n\t"
            PAVGB"                   %%mm1, %%mm0       \n\t"
            PAVGB"                   %%mm3, %%mm2       \n\t"
            "punpcklbw               %%mm7, %%mm0       \n\t"
            "punpcklbw               %%mm7, %%mm2       \n\t"
            "movq          "BGR2V_IDX"(%5), %%mm1       \n\t"
            "movq          "BGR2V_IDX"(%5), %%mm3       \n\t"

            "pmaddwd                 %%mm0, %%mm1       \n\t"
            "pmaddwd                 %%mm2, %%mm3       \n\t"
            "pmaddwd                 %%mm6, %%mm0       \n\t"
            "pmaddwd                 %%mm6, %%mm2       \n\t"
            "psrad                      $8, %%mm0       \n\t"
            "psrad                      $8, %%mm1       \n\t"
            "psrad                      $8, %%mm2       \n\t"
            "psrad                      $8, %%mm3       \n\t"
            "packssdw                %%mm2, %%mm0       \n\t"
            "packssdw                %%mm3, %%mm1       \n\t"
            "pmaddwd                 %%mm5, %%mm0       \n\t"
            "pmaddwd                 %%mm5, %%mm1       \n\t"
            "packssdw                %%mm1, %%mm0       \n\t" // V1 V0 U1 U0
            "psraw                      $7, %%mm0       \n\t"

            "movq     12(%0, %%"FF_REG_d"), %%mm4       \n\t"
            "movq     12(%1, %%"FF_REG_d"), %%mm1       \n\t"
            "movq     18(%0, %%"FF_REG_d"), %%mm2       \n\t"
            "movq     18(%1, %%"FF_REG_d"), %%mm3       \n\t"
            PAVGB"                   %%mm1, %%mm4       \n\t"
            PAVGB"                   %%mm3, %%mm2       \n\t"
            "movq                    %%mm4, %%mm1       \n\t"
            "movq                    %%mm2, %%mm3       \n\t"
            "psrlq                     $24, %%mm4       \n\t"
            "psrlq                     $24, %%mm2       \n\t"
            PAVGB"                   %%mm1, %%mm4       \n\t"
            PAVGB"                   %%mm3, %%mm2       \n\t"
            "punpcklbw               %%mm7, %%mm4       \n\t"
            "punpcklbw               %%mm7, %%mm2       \n\t"
            "movq          "BGR2V_IDX"(%5), %%mm1       \n\t"
            "movq          "BGR2V_IDX"(%5), %%mm3       \n\t"

            "pmaddwd                 %%mm4, %%mm1       \n\t"
            "pmaddwd                 %%mm2, %%mm3       \n\t"
            "pmaddwd                 %%mm6, %%mm4       \n\t"
            "pmaddwd                 %%mm6, %%mm2       \n\t"
            "psrad                      $8, %%mm4       \n\t"
            "psrad                      $8, %%mm1       \n\t"
            "psrad                      $8, %%mm2       \n\t"
            "psrad                      $8, %%mm3       \n\t"
            "packssdw                %%mm2, %%mm4       \n\t"
            "packssdw                %%mm3, %%mm1       \n\t"
            "pmaddwd                 %%mm5, %%mm4       \n\t"
            "pmaddwd                 %%mm5, %%mm1       \n\t"
            "add                       $24, %%"FF_REG_d"\n\t"
            "packssdw                %%mm1, %%mm4       \n\t" // V3 V2 U3 U2
            "psraw                      $7, %%mm4       \n\t"

            "movq                    %%mm0, %%mm1           \n\t"
            "punpckldq               %%mm4, %%mm0           \n\t"
            "punpckhdq               %%mm4, %%mm1           \n\t"
            "packsswb                %%mm1, %%mm0           \n\t"
            "paddb "MANGLE(ff_bgr2UVOffset)", %%mm0         \n\t"
            "movd                    %%mm0, (%2, %%"FF_REG_a") \n\t"
            "punpckhdq               %%mm0, %%mm0              \n\t"
            "movd                    %%mm0, (%3, %%"FF_REG_a") \n\t"
            "add                        $4, %%"FF_REG_a"       \n\t"
            " js                        1b              \n\t"
            : : "r" (src+chromWidth*6), "r" (src+srcStride+chromWidth*6), "r" (udst+chromWidth), "r" (vdst+chromWidth), "g" (-chromWidth), "r"(rgb2yuv)
              NAMED_CONSTRAINTS_ADD(ff_w1111,ff_bgr2UVOffset)
            : "%"FF_REG_a, "%"FF_REG_d
        );

        udst += chromStride;
        vdst += chromStride;
        src  += srcStride*2;
    }

    __asm__ volatile(EMMS"       \n\t"
                     SFENCE"     \n\t"
                     :::"memory");

     ff_rgb24toyv12_c(src, ydst, udst, vdst, width, height-y, lumStride, chromStride, srcStride, rgb2yuv);
}
#endif /* HAVE_7REGS */

static inline void vu9_to_vu12_mmxext(const uint8_t *src1, const uint8_t *src2,
                                       uint8_t *dst1, uint8_t *dst2,
                                       int width, int height,
                                       int srcStride1, int srcStride2,
                                       int dstStride1, int dstStride2)
{
    int w,h;
    w=width/2; h=height/2;
    __asm__ volatile(
        PREFETCH" %0    \n\t"
        PREFETCH" %1    \n\t"
        ::"m"(*(src1+srcStride1)),"m"(*(src2+srcStride2)):"memory");
    for (x86_reg y = 0; y < h; y++) {
        const uint8_t* s1=src1+srcStride1*(y>>1);
        uint8_t* d=dst1+dstStride1*y;
        x86_reg x = 0;
        for (;x<w-31;x+=32) {
            __asm__ volatile(
                PREFETCH"   32(%1,%2)        \n\t"
                "movq         (%1,%2), %%mm0 \n\t"
                "movq        8(%1,%2), %%mm2 \n\t"
                "movq       16(%1,%2), %%mm4 \n\t"
                "movq       24(%1,%2), %%mm6 \n\t"
                "movq      %%mm0, %%mm1 \n\t"
                "movq      %%mm2, %%mm3 \n\t"
                "movq      %%mm4, %%mm5 \n\t"
                "movq      %%mm6, %%mm7 \n\t"
                "punpcklbw %%mm0, %%mm0 \n\t"
                "punpckhbw %%mm1, %%mm1 \n\t"
                "punpcklbw %%mm2, %%mm2 \n\t"
                "punpckhbw %%mm3, %%mm3 \n\t"
                "punpcklbw %%mm4, %%mm4 \n\t"
                "punpckhbw %%mm5, %%mm5 \n\t"
                "punpcklbw %%mm6, %%mm6 \n\t"
                "punpckhbw %%mm7, %%mm7 \n\t"
                MOVNTQ"    %%mm0,   (%0,%2,2)  \n\t"
                MOVNTQ"    %%mm1,  8(%0,%2,2)  \n\t"
                MOVNTQ"    %%mm2, 16(%0,%2,2)  \n\t"
                MOVNTQ"    %%mm3, 24(%0,%2,2)  \n\t"
                MOVNTQ"    %%mm4, 32(%0,%2,2)  \n\t"
                MOVNTQ"    %%mm5, 40(%0,%2,2)  \n\t"
                MOVNTQ"    %%mm6, 48(%0,%2,2)  \n\t"
                MOVNTQ"    %%mm7, 56(%0,%2,2)"
                :: "r"(d), "r"(s1), "r"(x)
                :"memory");
        }
        for (;x<w;x++) d[2*x]=d[2*x+1]=s1[x];
    }
    for (x86_reg y = 0; y < h; y++) {
        const uint8_t* s2=src2+srcStride2*(y>>1);
        uint8_t* d=dst2+dstStride2*y;
        x86_reg x = 0;
        for (;x<w-31;x+=32) {
            __asm__ volatile(
                PREFETCH"   32(%1,%2)        \n\t"
                "movq         (%1,%2), %%mm0 \n\t"
                "movq        8(%1,%2), %%mm2 \n\t"
                "movq       16(%1,%2), %%mm4 \n\t"
                "movq       24(%1,%2), %%mm6 \n\t"
                "movq      %%mm0, %%mm1 \n\t"
                "movq      %%mm2, %%mm3 \n\t"
                "movq      %%mm4, %%mm5 \n\t"
                "movq      %%mm6, %%mm7 \n\t"
                "punpcklbw %%mm0, %%mm0 \n\t"
                "punpckhbw %%mm1, %%mm1 \n\t"
                "punpcklbw %%mm2, %%mm2 \n\t"
                "punpckhbw %%mm3, %%mm3 \n\t"
                "punpcklbw %%mm4, %%mm4 \n\t"
                "punpckhbw %%mm5, %%mm5 \n\t"
                "punpcklbw %%mm6, %%mm6 \n\t"
                "punpckhbw %%mm7, %%mm7 \n\t"
                MOVNTQ"    %%mm0,   (%0,%2,2)  \n\t"
                MOVNTQ"    %%mm1,  8(%0,%2,2)  \n\t"
                MOVNTQ"    %%mm2, 16(%0,%2,2)  \n\t"
                MOVNTQ"    %%mm3, 24(%0,%2,2)  \n\t"
                MOVNTQ"    %%mm4, 32(%0,%2,2)  \n\t"
                MOVNTQ"    %%mm5, 40(%0,%2,2)  \n\t"
                MOVNTQ"    %%mm6, 48(%0,%2,2)  \n\t"
                MOVNTQ"    %%mm7, 56(%0,%2,2)"
                :: "r"(d), "r"(s2), "r"(x)
                :"memory");
        }
        for (;x<w;x++) d[2*x]=d[2*x+1]=s2[x];
    }
    __asm__(
            EMMS"       \n\t"
            SFENCE"     \n\t"
            ::: "memory"
        );
}

static inline void yvu9_to_yuy2_mmxext(const uint8_t *src1, const uint8_t *src2, const uint8_t *src3,
                                        uint8_t *dst,
                                        int width, int height,
                                        int srcStride1, int srcStride2,
                                        int srcStride3, int dstStride)
{
    int w,h;
    w=width/2; h=height;
    for (int y = 0; y < h; y++) {
        const uint8_t* yp=src1+srcStride1*y;
        const uint8_t* up=src2+srcStride2*(y>>2);
        const uint8_t* vp=src3+srcStride3*(y>>2);
        uint8_t* d=dst+dstStride*y;
        x86_reg x = 0;
        for (;x<w-7;x+=8) {
            __asm__ volatile(
                PREFETCH"   32(%1, %0)          \n\t"
                PREFETCH"   32(%2, %0)          \n\t"
                PREFETCH"   32(%3, %0)          \n\t"
                "movq      (%1, %0, 4), %%mm0   \n\t" /* Y0Y1Y2Y3Y4Y5Y6Y7 */
                "movq         (%2, %0), %%mm1   \n\t" /* U0U1U2U3U4U5U6U7 */
                "movq         (%3, %0), %%mm2   \n\t" /* V0V1V2V3V4V5V6V7 */
                "movq            %%mm0, %%mm3   \n\t" /* Y0Y1Y2Y3Y4Y5Y6Y7 */
                "movq            %%mm1, %%mm4   \n\t" /* U0U1U2U3U4U5U6U7 */
                "movq            %%mm2, %%mm5   \n\t" /* V0V1V2V3V4V5V6V7 */
                "punpcklbw       %%mm1, %%mm1   \n\t" /* U0U0 U1U1 U2U2 U3U3 */
                "punpcklbw       %%mm2, %%mm2   \n\t" /* V0V0 V1V1 V2V2 V3V3 */
                "punpckhbw       %%mm4, %%mm4   \n\t" /* U4U4 U5U5 U6U6 U7U7 */
                "punpckhbw       %%mm5, %%mm5   \n\t" /* V4V4 V5V5 V6V6 V7V7 */

                "movq            %%mm1, %%mm6   \n\t"
                "punpcklbw       %%mm2, %%mm1   \n\t" /* U0V0 U0V0 U1V1 U1V1*/
                "punpcklbw       %%mm1, %%mm0   \n\t" /* Y0U0 Y1V0 Y2U0 Y3V0*/
                "punpckhbw       %%mm1, %%mm3   \n\t" /* Y4U1 Y5V1 Y6U1 Y7V1*/
                MOVNTQ"          %%mm0,  (%4, %0, 8)    \n\t"
                MOVNTQ"          %%mm3, 8(%4, %0, 8)    \n\t"

                "punpckhbw       %%mm2, %%mm6   \n\t" /* U2V2 U2V2 U3V3 U3V3*/
                "movq     8(%1, %0, 4), %%mm0   \n\t"
                "movq            %%mm0, %%mm3   \n\t"
                "punpcklbw       %%mm6, %%mm0   \n\t" /* Y U2 Y V2 Y U2 Y V2*/
                "punpckhbw       %%mm6, %%mm3   \n\t" /* Y U3 Y V3 Y U3 Y V3*/
                MOVNTQ"          %%mm0, 16(%4, %0, 8)   \n\t"
                MOVNTQ"          %%mm3, 24(%4, %0, 8)   \n\t"

                "movq            %%mm4, %%mm6   \n\t"
                "movq    16(%1, %0, 4), %%mm0   \n\t"
                "movq            %%mm0, %%mm3   \n\t"
                "punpcklbw       %%mm5, %%mm4   \n\t"
                "punpcklbw       %%mm4, %%mm0   \n\t" /* Y U4 Y V4 Y U4 Y V4*/
                "punpckhbw       %%mm4, %%mm3   \n\t" /* Y U5 Y V5 Y U5 Y V5*/
                MOVNTQ"          %%mm0, 32(%4, %0, 8)   \n\t"
                MOVNTQ"          %%mm3, 40(%4, %0, 8)   \n\t"

                "punpckhbw       %%mm5, %%mm6   \n\t"
                "movq    24(%1, %0, 4), %%mm0   \n\t"
                "movq            %%mm0, %%mm3   \n\t"
                "punpcklbw       %%mm6, %%mm0   \n\t" /* Y U6 Y V6 Y U6 Y V6*/
                "punpckhbw       %%mm6, %%mm3   \n\t" /* Y U7 Y V7 Y U7 Y V7*/
                MOVNTQ"          %%mm0, 48(%4, %0, 8)   \n\t"
                MOVNTQ"          %%mm3, 56(%4, %0, 8)   \n\t"

                : "+r" (x)
                : "r"(yp), "r" (up), "r"(vp), "r"(d)
                :"memory");
        }
        for (; x<w; x++) {
            const int x2 = x<<2;
            d[8*x+0] = yp[x2];
            d[8*x+1] = up[x];
            d[8*x+2] = yp[x2+1];
            d[8*x+3] = vp[x];
            d[8*x+4] = yp[x2+2];
            d[8*x+5] = up[x];
            d[8*x+6] = yp[x2+3];
            d[8*x+7] = vp[x];
        }
    }
    __asm__(
            EMMS"       \n\t"
            SFENCE"     \n\t"
            ::: "memory"
        );
}

static void extract_even_mmxext(const uint8_t *src, uint8_t *dst, x86_reg count)
{
    dst +=   count;
    src += 2*count;
    count= - count;

    if(count <= -16) {
        count += 15;
        __asm__ volatile(
            "pcmpeqw       %%mm7, %%mm7        \n\t"
            "psrlw            $8, %%mm7        \n\t"
            "1:                                \n\t"
            "movq -30(%1, %0, 2), %%mm0        \n\t"
            "movq -22(%1, %0, 2), %%mm1        \n\t"
            "movq -14(%1, %0, 2), %%mm2        \n\t"
            "movq  -6(%1, %0, 2), %%mm3        \n\t"
            "pand          %%mm7, %%mm0        \n\t"
            "pand          %%mm7, %%mm1        \n\t"
            "pand          %%mm7, %%mm2        \n\t"
            "pand          %%mm7, %%mm3        \n\t"
            "packuswb      %%mm1, %%mm0        \n\t"
            "packuswb      %%mm3, %%mm2        \n\t"
            MOVNTQ"        %%mm0,-15(%2, %0)   \n\t"
            MOVNTQ"        %%mm2,- 7(%2, %0)   \n\t"
            "add             $16, %0           \n\t"
            " js 1b                            \n\t"
            : "+r"(count)
            : "r"(src), "r"(dst)
        );
        count -= 15;
    }
    while(count<0) {
        dst[count]= src[2*count];
        count++;
    }
}

static void extract_odd_mmxext(const uint8_t *src, uint8_t *dst, x86_reg count)
{
    src ++;
    dst +=   count;
    src += 2*count;
    count= - count;

    if(count < -16) {
        count += 16;
        __asm__ volatile(
            "pcmpeqw       %%mm7, %%mm7        \n\t"
            "psrlw            $8, %%mm7        \n\t"
            "1:                                \n\t"
            "movq -32(%1, %0, 2), %%mm0        \n\t"
            "movq -24(%1, %0, 2), %%mm1        \n\t"
            "movq -16(%1, %0, 2), %%mm2        \n\t"
            "movq  -8(%1, %0, 2), %%mm3        \n\t"
            "pand          %%mm7, %%mm0        \n\t"
            "pand          %%mm7, %%mm1        \n\t"
            "pand          %%mm7, %%mm2        \n\t"
            "pand          %%mm7, %%mm3        \n\t"
            "packuswb      %%mm1, %%mm0        \n\t"
            "packuswb      %%mm3, %%mm2        \n\t"
            MOVNTQ"        %%mm0,-16(%2, %0)   \n\t"
            MOVNTQ"        %%mm2,- 8(%2, %0)   \n\t"
            "add             $16, %0           \n\t"
            " js 1b                            \n\t"
            : "+r"(count)
            : "r"(src), "r"(dst)
        );
        count -= 16;
    }
    while(count<0) {
        dst[count]= src[2*count];
        count++;
    }
}

#if ARCH_X86_32
static void extract_even2_mmxext(const uint8_t *src, uint8_t *dst0, uint8_t *dst1, x86_reg count)
{
    dst0+=   count;
    dst1+=   count;
    src += 4*count;
    count= - count;
    if(count <= -8) {
        count += 7;
        __asm__ volatile(
            "pcmpeqw       %%mm7, %%mm7        \n\t"
            "psrlw            $8, %%mm7        \n\t"
            "1:                                \n\t"
            "movq -28(%1, %0, 4), %%mm0        \n\t"
            "movq -20(%1, %0, 4), %%mm1        \n\t"
            "movq -12(%1, %0, 4), %%mm2        \n\t"
            "movq  -4(%1, %0, 4), %%mm3        \n\t"
            "pand          %%mm7, %%mm0        \n\t"
            "pand          %%mm7, %%mm1        \n\t"
            "pand          %%mm7, %%mm2        \n\t"
            "pand          %%mm7, %%mm3        \n\t"
            "packuswb      %%mm1, %%mm0        \n\t"
            "packuswb      %%mm3, %%mm2        \n\t"
            "movq          %%mm0, %%mm1        \n\t"
            "movq          %%mm2, %%mm3        \n\t"
            "psrlw            $8, %%mm0        \n\t"
            "psrlw            $8, %%mm2        \n\t"
            "pand          %%mm7, %%mm1        \n\t"
            "pand          %%mm7, %%mm3        \n\t"
            "packuswb      %%mm2, %%mm0        \n\t"
            "packuswb      %%mm3, %%mm1        \n\t"
            MOVNTQ"        %%mm0,- 7(%3, %0)   \n\t"
            MOVNTQ"        %%mm1,- 7(%2, %0)   \n\t"
            "add              $8, %0           \n\t"
            " js 1b                            \n\t"
            : "+r"(count)
            : "r"(src), "r"(dst0), "r"(dst1)
        );
        count -= 7;
    }
    while(count<0) {
        dst0[count]= src[4*count+0];
        dst1[count]= src[4*count+2];
        count++;
    }
}
#endif /* ARCH_X86_32 */

static void extract_even2avg_mmxext(const uint8_t *src0, const uint8_t *src1, uint8_t *dst0, uint8_t *dst1, x86_reg count)
{
    dst0 +=   count;
    dst1 +=   count;
    src0 += 4*count;
    src1 += 4*count;
    count= - count;
#ifdef PAVGB
    if(count <= -8) {
        count += 7;
        __asm__ volatile(
            "pcmpeqw        %%mm7, %%mm7        \n\t"
            "psrlw             $8, %%mm7        \n\t"
            "1:                                \n\t"
            "movq  -28(%1, %0, 4), %%mm0        \n\t"
            "movq  -20(%1, %0, 4), %%mm1        \n\t"
            "movq  -12(%1, %0, 4), %%mm2        \n\t"
            "movq   -4(%1, %0, 4), %%mm3        \n\t"
            PAVGB" -28(%2, %0, 4), %%mm0        \n\t"
            PAVGB" -20(%2, %0, 4), %%mm1        \n\t"
            PAVGB" -12(%2, %0, 4), %%mm2        \n\t"
            PAVGB" - 4(%2, %0, 4), %%mm3        \n\t"
            "pand           %%mm7, %%mm0        \n\t"
            "pand           %%mm7, %%mm1        \n\t"
            "pand           %%mm7, %%mm2        \n\t"
            "pand           %%mm7, %%mm3        \n\t"
            "packuswb       %%mm1, %%mm0        \n\t"
            "packuswb       %%mm3, %%mm2        \n\t"
            "movq           %%mm0, %%mm1        \n\t"
            "movq           %%mm2, %%mm3        \n\t"
            "psrlw             $8, %%mm0        \n\t"
            "psrlw             $8, %%mm2        \n\t"
            "pand           %%mm7, %%mm1        \n\t"
            "pand           %%mm7, %%mm3        \n\t"
            "packuswb       %%mm2, %%mm0        \n\t"
            "packuswb       %%mm3, %%mm1        \n\t"
            MOVNTQ"         %%mm0,- 7(%4, %0)   \n\t"
            MOVNTQ"         %%mm1,- 7(%3, %0)   \n\t"
            "add               $8, %0           \n\t"
            " js 1b                            \n\t"
            : "+r"(count)
            : "r"(src0), "r"(src1), "r"(dst0), "r"(dst1)
        );
        count -= 7;
    }
#endif
    while(count<0) {
        dst0[count]= (src0[4*count+0]+src1[4*count+0])>>1;
        dst1[count]= (src0[4*count+2]+src1[4*count+2])>>1;
        count++;
    }
}

static void extract_odd2_mmxext(const uint8_t *src, uint8_t *dst0, uint8_t *dst1, x86_reg count)
{
    dst0+=   count;
    dst1+=   count;
    src += 4*count;
    count= - count;
    if(count <= -8) {
        count += 7;
        __asm__ volatile(
            "pcmpeqw       %%mm7, %%mm7        \n\t"
            "psrlw            $8, %%mm7        \n\t"
            "1:                                \n\t"
            "movq -28(%1, %0, 4), %%mm0        \n\t"
            "movq -20(%1, %0, 4), %%mm1        \n\t"
            "movq -12(%1, %0, 4), %%mm2        \n\t"
            "movq  -4(%1, %0, 4), %%mm3        \n\t"
            "psrlw            $8, %%mm0        \n\t"
            "psrlw            $8, %%mm1        \n\t"
            "psrlw            $8, %%mm2        \n\t"
            "psrlw            $8, %%mm3        \n\t"
            "packuswb      %%mm1, %%mm0        \n\t"
            "packuswb      %%mm3, %%mm2        \n\t"
            "movq          %%mm0, %%mm1        \n\t"
            "movq          %%mm2, %%mm3        \n\t"
            "psrlw            $8, %%mm0        \n\t"
            "psrlw            $8, %%mm2        \n\t"
            "pand          %%mm7, %%mm1        \n\t"
            "pand          %%mm7, %%mm3        \n\t"
            "packuswb      %%mm2, %%mm0        \n\t"
            "packuswb      %%mm3, %%mm1        \n\t"
            MOVNTQ"        %%mm0,- 7(%3, %0)   \n\t"
            MOVNTQ"        %%mm1,- 7(%2, %0)   \n\t"
            "add              $8, %0           \n\t"
            " js 1b                            \n\t"
            : "+r"(count)
            : "r"(src), "r"(dst0), "r"(dst1)
        );
        count -= 7;
    }
    src++;
    while(count<0) {
        dst0[count]= src[4*count+0];
        dst1[count]= src[4*count+2];
        count++;
    }
}

static void extract_odd2avg_mmxext(const uint8_t *src0, const uint8_t *src1, uint8_t *dst0, uint8_t *dst1, x86_reg count)
{
    dst0 +=   count;
    dst1 +=   count;
    src0 += 4*count;
    src1 += 4*count;
    count= - count;
#ifdef PAVGB
    if(count <= -8) {
        count += 7;
        __asm__ volatile(
            "pcmpeqw        %%mm7, %%mm7        \n\t"
            "psrlw             $8, %%mm7        \n\t"
            "1:                                \n\t"
            "movq  -28(%1, %0, 4), %%mm0        \n\t"
            "movq  -20(%1, %0, 4), %%mm1        \n\t"
            "movq  -12(%1, %0, 4), %%mm2        \n\t"
            "movq   -4(%1, %0, 4), %%mm3        \n\t"
            PAVGB" -28(%2, %0, 4), %%mm0        \n\t"
            PAVGB" -20(%2, %0, 4), %%mm1        \n\t"
            PAVGB" -12(%2, %0, 4), %%mm2        \n\t"
            PAVGB" - 4(%2, %0, 4), %%mm3        \n\t"
            "psrlw             $8, %%mm0        \n\t"
            "psrlw             $8, %%mm1        \n\t"
            "psrlw             $8, %%mm2        \n\t"
            "psrlw             $8, %%mm3        \n\t"
            "packuswb       %%mm1, %%mm0        \n\t"
            "packuswb       %%mm3, %%mm2        \n\t"
            "movq           %%mm0, %%mm1        \n\t"
            "movq           %%mm2, %%mm3        \n\t"
            "psrlw             $8, %%mm0        \n\t"
            "psrlw             $8, %%mm2        \n\t"
            "pand           %%mm7, %%mm1        \n\t"
            "pand           %%mm7, %%mm3        \n\t"
            "packuswb       %%mm2, %%mm0        \n\t"
            "packuswb       %%mm3, %%mm1        \n\t"
            MOVNTQ"         %%mm0,- 7(%4, %0)   \n\t"
            MOVNTQ"         %%mm1,- 7(%3, %0)   \n\t"
            "add               $8, %0           \n\t"
            " js 1b                            \n\t"
            : "+r"(count)
            : "r"(src0), "r"(src1), "r"(dst0), "r"(dst1)
        );
        count -= 7;
    }
#endif
    src0++;
    src1++;
    while(count<0) {
        dst0[count]= (src0[4*count+0]+src1[4*count+0])>>1;
        dst1[count]= (src0[4*count+2]+src1[4*count+2])>>1;
        count++;
    }
}

static void yuyvtoyuv420_mmxext(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
                                 int width, int height,
                                 int lumStride, int chromStride, int srcStride)
{
    const int chromWidth = AV_CEIL_RSHIFT(width, 1);

    for (int y = 0; y < height; y++) {
        extract_even_mmxext(src, ydst, width);
        if(y&1) {
            extract_odd2avg_mmxext(src-srcStride, src, udst, vdst, chromWidth);
            udst+= chromStride;
            vdst+= chromStride;
        }

        src += srcStride;
        ydst+= lumStride;
    }
    __asm__(
            EMMS"       \n\t"
            SFENCE"     \n\t"
            ::: "memory"
        );
}

static void yuyvtoyuv422_mmxext(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
                                 int width, int height,
                                 int lumStride, int chromStride, int srcStride)
{
    const int chromWidth = AV_CEIL_RSHIFT(width, 1);

    for (int y = 0; y < height; y++) {
        extract_even_mmxext(src, ydst, width);
        extract_odd2_mmxext(src, udst, vdst, chromWidth);

        src += srcStride;
        ydst+= lumStride;
        udst+= chromStride;
        vdst+= chromStride;
    }
    __asm__(
            EMMS"       \n\t"
            SFENCE"     \n\t"
            ::: "memory"
        );
}

static void uyvytoyuv420_mmxext(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
                                 int width, int height,
                                 int lumStride, int chromStride, int srcStride)
{
    const int chromWidth = AV_CEIL_RSHIFT(width, 1);

    for (int y = 0; y < height; y++) {
        extract_odd_mmxext(src, ydst, width);
        if(y&1) {
            extract_even2avg_mmxext(src-srcStride, src, udst, vdst, chromWidth);
            udst+= chromStride;
            vdst+= chromStride;
        }

        src += srcStride;
        ydst+= lumStride;
    }
    __asm__(
            EMMS"       \n\t"
            SFENCE"     \n\t"
            ::: "memory"
        );
}

#if ARCH_X86_32
static void uyvytoyuv422_mmxext(uint8_t *ydst, uint8_t *udst, uint8_t *vdst, const uint8_t *src,
                                 int width, int height,
                                 int lumStride, int chromStride, int srcStride)
{
    const int chromWidth = AV_CEIL_RSHIFT(width, 1);

    for (int y = 0; y < height; y++) {
        extract_odd_mmxext(src, ydst, width);
        extract_even2_mmxext(src, udst, vdst, chromWidth);

        src += srcStride;
        ydst+= lumStride;
        udst+= chromStride;
        vdst+= chromStride;
    }
    __asm__(
            EMMS"       \n\t"
            SFENCE"     \n\t"
            ::: "memory"
        );
}
#endif /* ARCH_X86_32 */

static av_cold void rgb2rgb_init_mmxext(void)
{
    rgb15to16          = rgb15to16_mmxext;
    rgb15tobgr24       = rgb15tobgr24_mmxext;
    rgb15to32          = rgb15to32_mmxext;
    rgb16tobgr24       = rgb16tobgr24_mmxext;
    rgb16to32          = rgb16to32_mmxext;
    rgb16to15          = rgb16to15_mmxext;
    rgb24tobgr16       = rgb24tobgr16_mmxext;
    rgb24tobgr15       = rgb24tobgr15_mmxext;
    rgb24tobgr32       = rgb24tobgr32_mmxext;
    rgb32to16          = rgb32to16_mmxext;
    rgb32to15          = rgb32to15_mmxext;
    rgb32tobgr24       = rgb32tobgr24_mmxext;
    rgb24to15          = rgb24to15_mmxext;
    rgb24to16          = rgb24to16_mmxext;
    rgb24tobgr24       = rgb24tobgr24_mmxext;
    rgb32tobgr16       = rgb32tobgr16_mmxext;
    rgb32tobgr15       = rgb32tobgr15_mmxext;
    yv12toyuy2         = yv12toyuy2_mmxext;
    yv12touyvy         = yv12touyvy_mmxext;
    yuv422ptoyuy2      = yuv422ptoyuy2_mmxext;
    yuv422ptouyvy      = yuv422ptouyvy_mmxext;
    yuy2toyv12         = yuy2toyv12_mmxext;
    vu9_to_vu12        = vu9_to_vu12_mmxext;
    yvu9_to_yuy2       = yvu9_to_yuy2_mmxext;
#if ARCH_X86_32
    uyvytoyuv422       = uyvytoyuv422_mmxext;
#endif
    yuyvtoyuv422       = yuyvtoyuv422_mmxext;

    planar2x           = planar2x_mmxext;
#if HAVE_7REGS
    ff_rgb24toyv12     = rgb24toyv12_mmxext;
#endif /* HAVE_7REGS */

    yuyvtoyuv420       = yuyvtoyuv420_mmxext;
    uyvytoyuv420       = uyvytoyuv420_mmxext;
}

//SSE2 versions
static void interleave_bytes_sse2(const uint8_t *src1, const uint8_t *src2, uint8_t *dest,
                                  int width, int height, int src1Stride,
                                  int src2Stride, int dstStride)
{
    for (int h = 0; h < height; h++) {
        if (width >= 16) {
            if (!((((intptr_t)src1) | ((intptr_t)src2) | ((intptr_t)dest))&15)) {
        __asm__(
            "xor              %%"FF_REG_a", %%"FF_REG_a"  \n\t"
            "1:                                     \n\t"
            PREFETCH" 64(%1, %%"FF_REG_a")          \n\t"
            PREFETCH" 64(%2, %%"FF_REG_a")          \n\t"
            "movdqa  (%1, %%"FF_REG_a"), %%xmm0     \n\t"
            "movdqa  (%1, %%"FF_REG_a"), %%xmm1     \n\t"
            "movdqa  (%2, %%"FF_REG_a"), %%xmm2     \n\t"
            "punpcklbw           %%xmm2, %%xmm0     \n\t"
            "punpckhbw           %%xmm2, %%xmm1     \n\t"
            "movntdq             %%xmm0,   (%0, %%"FF_REG_a", 2) \n\t"
            "movntdq             %%xmm1, 16(%0, %%"FF_REG_a", 2) \n\t"
            "add                    $16, %%"FF_REG_a"            \n\t"
            "cmp                     %3, %%"FF_REG_a"            \n\t"
            " jb                     1b             \n\t"
            ::"r"(dest), "r"(src1), "r"(src2), "r" ((x86_reg)width-15)
            : "memory", XMM_CLOBBERS("xmm0", "xmm1", "xmm2",) "%"FF_REG_a
        );
            } else
        __asm__(
            "xor %%"FF_REG_a", %%"FF_REG_a"         \n\t"
            "1:                                     \n\t"
            PREFETCH" 64(%1, %%"FF_REG_a")          \n\t"
            PREFETCH" 64(%2, %%"FF_REG_a")          \n\t"
            "movq    (%1, %%"FF_REG_a"), %%mm0      \n\t"
            "movq   8(%1, %%"FF_REG_a"), %%mm2      \n\t"
            "movq                 %%mm0, %%mm1      \n\t"
            "movq                 %%mm2, %%mm3      \n\t"
            "movq    (%2, %%"FF_REG_a"), %%mm4      \n\t"
            "movq   8(%2, %%"FF_REG_a"), %%mm5      \n\t"
            "punpcklbw            %%mm4, %%mm0      \n\t"
            "punpckhbw            %%mm4, %%mm1      \n\t"
            "punpcklbw            %%mm5, %%mm2      \n\t"
            "punpckhbw            %%mm5, %%mm3      \n\t"
            MOVNTQ"               %%mm0,   (%0, %%"FF_REG_a", 2) \n\t"
            MOVNTQ"               %%mm1,  8(%0, %%"FF_REG_a", 2) \n\t"
            MOVNTQ"               %%mm2, 16(%0, %%"FF_REG_a", 2) \n\t"
            MOVNTQ"               %%mm3, 24(%0, %%"FF_REG_a", 2) \n\t"
            "add                    $16, %%"FF_REG_a"            \n\t"
            "cmp                     %3, %%"FF_REG_a"            \n\t"
            " jb                     1b                          \n\t"
            ::"r"(dest), "r"(src1), "r"(src2), "r" ((x86_reg)width-15)
            : "memory", "%"FF_REG_a
        );

        }
        for (int w = (width & (~15)); w < width; w++) {
            dest[2*w+0] = src1[w];
            dest[2*w+1] = src2[w];
        }
        dest += dstStride;
        src1 += src1Stride;
        src2 += src2Stride;
    }
    __asm__(
            EMMS"       \n\t"
            SFENCE"     \n\t"
            ::: "memory"
            );
}

/*
 RGB15->RGB16 original by Strepto/Astral
 ported to gcc & bugfixed : A'rpi
 MMXEXT, 3DNOW optimization by Nick Kurshev
 32-bit C version, and and&add trick by Michael Niedermayer
*/

#endif /* HAVE_INLINE_ASM */

void ff_shuffle_bytes_2103_ssse3(const uint8_t *src, uint8_t *dst, int src_size);
void ff_shuffle_bytes_0321_ssse3(const uint8_t *src, uint8_t *dst, int src_size);
void ff_shuffle_bytes_1230_ssse3(const uint8_t *src, uint8_t *dst, int src_size);
void ff_shuffle_bytes_3012_ssse3(const uint8_t *src, uint8_t *dst, int src_size);
void ff_shuffle_bytes_3210_ssse3(const uint8_t *src, uint8_t *dst, int src_size);

#if ARCH_X86_64
void ff_shuffle_bytes_2103_avx2(const uint8_t *src, uint8_t *dst, int src_size);
void ff_shuffle_bytes_0321_avx2(const uint8_t *src, uint8_t *dst, int src_size);
void ff_shuffle_bytes_1230_avx2(const uint8_t *src, uint8_t *dst, int src_size);
void ff_shuffle_bytes_3012_avx2(const uint8_t *src, uint8_t *dst, int src_size);
void ff_shuffle_bytes_3210_avx2(const uint8_t *src, uint8_t *dst, int src_size);

void ff_uyvytoyuv422_sse2(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
                          const uint8_t *src, int width, int height,
                          int lumStride, int chromStride, int srcStride);
void ff_uyvytoyuv422_avx(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
                         const uint8_t *src, int width, int height,
                         int lumStride, int chromStride, int srcStride);
void ff_uyvytoyuv422_avx2(uint8_t *ydst, uint8_t *udst, uint8_t *vdst,
                          const uint8_t *src, int width, int height,
                          int lumStride, int chromStride, int srcStride);
#endif

#define DEINTERLEAVE_BYTES(cpuext)                                            \
void ff_nv12ToUV_ ## cpuext(uint8_t *dstU, uint8_t *dstV,                     \
                            const uint8_t *unused,                            \
                            const uint8_t *src1,                              \
                            const uint8_t *src2,                              \
                            int w,                                            \
                            uint32_t *unused2,                                \
                            void *opq);                                       \
static void deinterleave_bytes_ ## cpuext(const uint8_t *src, uint8_t *dst1, uint8_t *dst2, \
                                          int width, int height, int srcStride, \
                                          int dst1Stride, int dst2Stride)     \
{                                                                             \
    for (int h = 0; h < height; h++) {                                        \
        ff_nv12ToUV_ ## cpuext(dst1, dst2, NULL, src, NULL, width, NULL, NULL); \
        src  += srcStride;                                                    \
        dst1 += dst1Stride;                                                   \
        dst2 += dst2Stride;                                                   \
    }                                                                         \
}

#if HAVE_SSE2_EXTERNAL
DEINTERLEAVE_BYTES(sse2)
#endif
#if HAVE_AVX_EXTERNAL
DEINTERLEAVE_BYTES(avx)
#endif

av_cold void rgb2rgb_init_x86(void)
{
    int cpu_flags = av_get_cpu_flags();

#if HAVE_INLINE_ASM
    if (INLINE_MMXEXT(cpu_flags))
        rgb2rgb_init_mmxext();
    if (INLINE_SSE2(cpu_flags))
        interleaveBytes = interleave_bytes_sse2;
#endif /* HAVE_INLINE_ASM */

#if HAVE_SSE2_EXTERNAL
    if (EXTERNAL_SSE2(cpu_flags)) {
#if ARCH_X86_64
        uyvytoyuv422 = ff_uyvytoyuv422_sse2;
#endif
        deinterleaveBytes = deinterleave_bytes_sse2;
    }
#endif
    if (EXTERNAL_SSSE3(cpu_flags)) {
        shuffle_bytes_0321 = ff_shuffle_bytes_0321_ssse3;
        shuffle_bytes_2103 = ff_shuffle_bytes_2103_ssse3;
        shuffle_bytes_1230 = ff_shuffle_bytes_1230_ssse3;
        shuffle_bytes_3012 = ff_shuffle_bytes_3012_ssse3;
        shuffle_bytes_3210 = ff_shuffle_bytes_3210_ssse3;
    }
#if HAVE_AVX_EXTERNAL
    if (EXTERNAL_AVX(cpu_flags)) {
        deinterleaveBytes = deinterleave_bytes_avx;
#if ARCH_X86_64
        uyvytoyuv422 = ff_uyvytoyuv422_avx;
    }
    if (EXTERNAL_AVX2_FAST(cpu_flags)) {
        shuffle_bytes_0321 = ff_shuffle_bytes_0321_avx2;
        shuffle_bytes_2103 = ff_shuffle_bytes_2103_avx2;
        shuffle_bytes_1230 = ff_shuffle_bytes_1230_avx2;
        shuffle_bytes_3012 = ff_shuffle_bytes_3012_avx2;
        shuffle_bytes_3210 = ff_shuffle_bytes_3210_avx2;
    }
    if (EXTERNAL_AVX2_FAST(cpu_flags)) {
        uyvytoyuv422 = ff_uyvytoyuv422_avx2;
#endif
    }
#endif
}