source/row_posix.cc

/*
 *  Copyright (c) 2011 The LibYuv project authors. All Rights Reserved.
 *
 *  Use of this source code is governed by a BSD-style license
 *  that can be found in the LICENSE file in the root of the source
 *  tree. An additional intellectual property rights grant can be found
 *  in the file PATENTS.  All contributing project authors may
 *  be found in the AUTHORS file in the root of the source tree.
 */

#include "row.h"

#include "libyuv/basic_types.h"

#ifdef __cplusplus
namespace libyuv {
extern "C" {
#endif

#ifdef __APPLE__
#define CONST
#else
#define CONST static const
#endif

#ifdef HAS_ARGBTOUVROW_SSSE3
CONST vec8 kARGBToU = {
  112, -74, -38, 0, 112, -74, -38, 0, 112, -74, -38, 0, 112, -74, -38, 0
};

CONST uvec8 kARGBToV = {
  -18, -94, 112, 0, -18, -94, 112, 0, -18, -94, 112, 0, -18, -94, 112, 0
};

CONST uvec8 kAddUV128 = {
  128u, 128u, 128u, 128u, 128u, 128u, 128u, 128u,
  128u, 128u, 128u, 128u, 128u, 128u, 128u, 128u
};
#endif

#ifdef HAS_ARGBTOYROW_SSSE3

// Constant multiplication table for converting ARGB to I400.
CONST vec8 kARGBToY = {
  13, 65, 33, 0, 13, 65, 33, 0, 13, 65, 33, 0, 13, 65, 33, 0
};

CONST uvec8 kAddY16 = {
  16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u, 16u
};

// Shuffle table for converting RGB24 to ARGB.
CONST uvec8 kShuffleMaskRGB24ToARGB = {
  0u, 1u, 2u, 12u, 3u, 4u, 5u, 13u, 6u, 7u, 8u, 14u, 9u, 10u, 11u, 15u
};

// Shuffle table for converting RAW to ARGB.
CONST uvec8 kShuffleMaskRAWToARGB = {
  2u, 1u, 0u, 12u, 5u, 4u, 3u, 13u, 8u, 7u, 6u, 14u, 11u, 10u, 9u, 15u
};

// Shuffle table for converting ABGR to ARGB.
CONST uvec8 kShuffleMaskABGRToARGB = {
  2u, 1u, 0u, 3u, 6u, 5u, 4u, 7u, 10u, 9u, 8u, 11u, 14u, 13u, 12u, 15u
};

// Shuffle table for converting BGRA to ARGB.
CONST uvec8 kShuffleMaskBGRAToARGB = {
  3u, 2u, 1u, 0u, 7u, 6u, 5u, 4u, 11u, 10u, 9u, 8u, 15u, 14u, 13u, 12u
};

void I400ToARGBRow_SSE2(const uint8* src_y, uint8* dst_argb, int pix) {
  asm volatile (
    "pcmpeqb   %%xmm5,%%xmm5                   \n"
    "pslld     $0x18,%%xmm5                    \n"
  "1:                                          \n"
    "movq      (%0),%%xmm0                     \n"
    "lea       0x8(%0),%0                      \n"
    "punpcklbw %%xmm0,%%xmm0                   \n"
    "movdqa    %%xmm0,%%xmm1                   \n"
    "punpcklwd %%xmm0,%%xmm0                   \n"
    "punpckhwd %%xmm1,%%xmm1                   \n"
    "por       %%xmm5,%%xmm0                   \n"
    "por       %%xmm5,%%xmm1                   \n"
    "movdqa    %%xmm0,(%1)                     \n"
    "movdqa    %%xmm1,0x10(%1)                 \n"
    "lea       0x20(%1),%1                     \n"
    "sub       $0x8,%2                         \n"
    "ja        1b                              \n"
  : "+r"(src_y),     // %0
    "+r"(dst_argb),  // %1
    "+r"(pix)        // %2
  :
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm5"
#endif
);
}

void ABGRToARGBRow_SSSE3(const uint8* src_abgr, uint8* dst_argb, int pix) {
  asm volatile (
    "movdqa    %3,%%xmm5                       \n"
  "1:                                          \n"
    "movdqa    (%0),%%xmm0                     \n"
    "lea       0x10(%0),%0                     \n"
    "pshufb    %%xmm5,%%xmm0                   \n"
    "movdqa    %%xmm0,(%1)                     \n"
    "lea       0x10(%1),%1                     \n"
    "sub       $0x4,%2                         \n"
    "ja        1b                              \n"
  : "+r"(src_abgr),  // %0
    "+r"(dst_argb),  // %1
    "+r"(pix)        // %2
  : "m"(kShuffleMaskABGRToARGB)  // %3
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm5"
#endif

);
}

void BGRAToARGBRow_SSSE3(const uint8* src_bgra, uint8* dst_argb, int pix) {
  asm volatile (
    "movdqa    %3,%%xmm5                       \n"
  "1:                                          \n"
    "movdqa    (%0),%%xmm0                     \n"
    "lea       0x10(%0),%0                     \n"
    "pshufb    %%xmm5,%%xmm0                   \n"
    "movdqa    %%xmm0,(%1)                     \n"
    "lea       0x10(%1),%1                     \n"
    "sub       $0x4,%2                         \n"
    "ja        1b                              \n"
  : "+r"(src_bgra),  // %0
    "+r"(dst_argb),  // %1
    "+r"(pix)        // %2
  : "m"(kShuffleMaskBGRAToARGB)  // %3
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm5"
#endif
);
}

void RGB24ToARGBRow_SSSE3(const uint8* src_rgb24, uint8* dst_argb, int pix) {
  asm volatile (
    "pcmpeqb   %%xmm5,%%xmm5                   \n"  // generate mask 0xff000000
    "pslld     $0x18,%%xmm5                    \n"
    "movdqa    %3,%%xmm4                       \n"
  "1:                                          \n"
    "movdqu    (%0),%%xmm0                     \n"
    "movdqu    0x10(%0),%%xmm1                 \n"
    "movdqu    0x20(%0),%%xmm3                 \n"
    "lea       0x30(%0),%0                     \n"
    "movdqa    %%xmm3,%%xmm2                   \n"
    "palignr   $0x8,%%xmm1,%%xmm2              \n"
    "pshufb    %%xmm4,%%xmm2                   \n"
    "por       %%xmm5,%%xmm2                   \n"
    "palignr   $0xc,%%xmm0,%%xmm1              \n"
    "pshufb    %%xmm4,%%xmm0                   \n"
    "movdqa    %%xmm2,0x20(%1)                 \n"
    "por       %%xmm5,%%xmm0                   \n"
    "pshufb    %%xmm4,%%xmm1                   \n"
    "movdqa    %%xmm0,(%1)                     \n"
    "por       %%xmm5,%%xmm1                   \n"
    "palignr   $0x4,%%xmm3,%%xmm3              \n"
    "pshufb    %%xmm4,%%xmm3                   \n"
    "movdqa    %%xmm1,0x10(%1)                 \n"
    "por       %%xmm5,%%xmm3                   \n"
    "movdqa    %%xmm3,0x30(%1)                 \n"
    "lea       0x40(%1),%1                     \n"
    "sub       $0x10,%2                        \n"
    "ja        1b                              \n"
  : "+r"(src_rgb24),  // %0
    "+r"(dst_argb),  // %1
    "+r"(pix)        // %2
  : "m"(kShuffleMaskRGB24ToARGB)  // %3
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5"
#endif
);
}

void RAWToARGBRow_SSSE3(const uint8* src_raw, uint8* dst_argb, int pix) {
  asm volatile (
    "pcmpeqb   %%xmm5,%%xmm5                   \n"  // generate mask 0xff000000
    "pslld     $0x18,%%xmm5                    \n"
    "movdqa    %3,%%xmm4                       \n"
  "1:                                          \n"
    "movdqu    (%0),%%xmm0                     \n"
    "movdqu    0x10(%0),%%xmm1                 \n"
    "movdqu    0x20(%0),%%xmm3                 \n"
    "lea       0x30(%0),%0                     \n"
    "movdqa    %%xmm3,%%xmm2                   \n"
    "palignr   $0x8,%%xmm1,%%xmm2              \n"
    "pshufb    %%xmm4,%%xmm2                   \n"
    "por       %%xmm5,%%xmm2                   \n"
    "palignr   $0xc,%%xmm0,%%xmm1              \n"
    "pshufb    %%xmm4,%%xmm0                   \n"
    "movdqa    %%xmm2,0x20(%1)                 \n"
    "por       %%xmm5,%%xmm0                   \n"
    "pshufb    %%xmm4,%%xmm1                   \n"
    "movdqa    %%xmm0,(%1)                     \n"
    "por       %%xmm5,%%xmm1                   \n"
    "palignr   $0x4,%%xmm3,%%xmm3              \n"
    "pshufb    %%xmm4,%%xmm3                   \n"
    "movdqa    %%xmm1,0x10(%1)                 \n"
    "por       %%xmm5,%%xmm3                   \n"
    "movdqa    %%xmm3,0x30(%1)                 \n"
    "lea       0x40(%1),%1                     \n"
    "sub       $0x10,%2                        \n"
    "ja        1b                              \n"
  : "+r"(src_raw),   // %0
    "+r"(dst_argb),  // %1
    "+r"(pix)        // %2
  : "m"(kShuffleMaskRAWToARGB)  // %3
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5"
#endif
);
}

void ARGBToYRow_SSSE3(const uint8* src_argb, uint8* dst_y, int pix) {
  asm volatile (
    "movdqa    %4,%%xmm5                       \n"
    "movdqa    %3,%%xmm4                       \n"
  "1:                                          \n"
    "movdqa    (%0),%%xmm0                     \n"
    "movdqa    0x10(%0),%%xmm1                 \n"
    "movdqa    0x20(%0),%%xmm2                 \n"
    "movdqa    0x30(%0),%%xmm3                 \n"
    "pmaddubsw %%xmm4,%%xmm0                   \n"
    "pmaddubsw %%xmm4,%%xmm1                   \n"
    "pmaddubsw %%xmm4,%%xmm2                   \n"
    "pmaddubsw %%xmm4,%%xmm3                   \n"
    "lea       0x40(%0),%0                     \n"
    "phaddw    %%xmm1,%%xmm0                   \n"
    "phaddw    %%xmm3,%%xmm2                   \n"
    "psrlw     $0x7,%%xmm0                     \n"
    "psrlw     $0x7,%%xmm2                     \n"
    "packuswb  %%xmm2,%%xmm0                   \n"
    "paddb     %%xmm5,%%xmm0                   \n"
    "movdqa    %%xmm0,(%1)                     \n"
    "lea       0x10(%1),%1                     \n"
    "sub       $0x10,%2                        \n"
    "ja        1b                              \n"
  : "+r"(src_argb),  // %0
    "+r"(dst_y),     // %1
    "+r"(pix)        // %2
  : "m"(kARGBToY),   // %3
    "m"(kAddY16)     // %4
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5"
#endif

);
}

void ARGBToYRow_Unaligned_SSSE3(const uint8* src_argb, uint8* dst_y, int pix) {
  asm volatile (
    "movdqa    %4,%%xmm5                       \n"
    "movdqa    %3,%%xmm4                       \n"
  "1:                                          \n"
    "movdqu    (%0),%%xmm0                     \n"
    "movdqu    0x10(%0),%%xmm1                 \n"
    "movdqu    0x20(%0),%%xmm2                 \n"
    "movdqu    0x30(%0),%%xmm3                 \n"
    "pmaddubsw %%xmm4,%%xmm0                   \n"
    "pmaddubsw %%xmm4,%%xmm1                   \n"
    "pmaddubsw %%xmm4,%%xmm2                   \n"
    "pmaddubsw %%xmm4,%%xmm3                   \n"
    "lea       0x40(%0),%0                     \n"
    "phaddw    %%xmm1,%%xmm0                   \n"
    "phaddw    %%xmm3,%%xmm2                   \n"
    "psrlw     $0x7,%%xmm0                     \n"
    "psrlw     $0x7,%%xmm2                     \n"
    "packuswb  %%xmm2,%%xmm0                   \n"
    "paddb     %%xmm5,%%xmm0                   \n"
    "movdqu    %%xmm0,(%1)                     \n"
    "lea       0x10(%1),%1                     \n"
    "sub       $0x10,%2                        \n"
    "ja        1b                              \n"
  : "+r"(src_argb),  // %0
    "+r"(dst_y),     // %1
    "+r"(pix)        // %2
  : "m"(kARGBToY),   // %3
    "m"(kAddY16)     // %4
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5"
#endif

);
}
#endif

#ifdef HAS_ARGBTOUVROW_SSSE3
void ARGBToUVRow_SSSE3(const uint8* src_argb0, int src_stride_argb,
                       uint8* dst_u, uint8* dst_v, int width) {
 asm volatile (
    "movdqa    %0,%%xmm4                       \n"
    "movdqa    %1,%%xmm3                       \n"
    "movdqa    %2,%%xmm5                       \n"
  :
  : "m"(kARGBToU),         // %0
    "m"(kARGBToV),         // %1
    "m"(kAddUV128)         // %2
  :
#if defined(__SSE2__)
    "xmm3", "xmm4", "xmm5"
#endif
 );
 asm volatile (
    "sub       %1,%2                           \n"
  "1:                                          \n"
    "movdqa    (%0),%%xmm0                     \n"
    "movdqa    0x10(%0),%%xmm1                 \n"
    "movdqa    0x20(%0),%%xmm2                 \n"
    "movdqa    0x30(%0),%%xmm6                 \n"
    "pavgb     (%0,%4,1),%%xmm0                \n"
    "pavgb     0x10(%0,%4,1),%%xmm1            \n"
    "pavgb     0x20(%0,%4,1),%%xmm2            \n"
    "pavgb     0x30(%0,%4,1),%%xmm6            \n"
    "lea       0x40(%0),%0                     \n"
    "movdqa    %%xmm0,%%xmm7                   \n"
    "shufps    $0x88,%%xmm1,%%xmm0             \n"
    "shufps    $0xdd,%%xmm1,%%xmm7             \n"
    "pavgb     %%xmm7,%%xmm0                   \n"
    "movdqa    %%xmm2,%%xmm7                   \n"
    "shufps    $0x88,%%xmm6,%%xmm2             \n"
    "shufps    $0xdd,%%xmm6,%%xmm7             \n"
    "pavgb     %%xmm7,%%xmm2                   \n"
    "movdqa    %%xmm0,%%xmm1                   \n"
    "movdqa    %%xmm2,%%xmm6                   \n"
    "pmaddubsw %%xmm4,%%xmm0                   \n"
    "pmaddubsw %%xmm4,%%xmm2                   \n"
    "pmaddubsw %%xmm3,%%xmm1                   \n"
    "pmaddubsw %%xmm3,%%xmm6                   \n"
    "phaddw    %%xmm2,%%xmm0                   \n"
    "phaddw    %%xmm6,%%xmm1                   \n"
    "psraw     $0x8,%%xmm0                     \n"
    "psraw     $0x8,%%xmm1                     \n"
    "packsswb  %%xmm1,%%xmm0                   \n"
    "paddb     %%xmm5,%%xmm0                   \n"
    "movlps    %%xmm0,(%1)                     \n"
    "movhps    %%xmm0,(%1,%2,1)                \n"
    "lea       0x8(%1),%1                      \n"
    "sub       $0x10,%3                        \n"
    "ja        1b                              \n"
  : "+r"(src_argb0),       // %0
    "+r"(dst_u),           // %1
    "+r"(dst_v),           // %2
    "+rm"(width)           // %3
  : "r"(static_cast<intptr_t>(src_stride_argb))
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm2", "xmm6", "xmm7"
#endif
);
}

void ARGBToUVRow_Unaligned_SSSE3(const uint8* src_argb0, int src_stride_argb,
                                 uint8* dst_u, uint8* dst_v, int width) {
 asm volatile (
    "movdqa    %0,%%xmm4                       \n"
    "movdqa    %1,%%xmm3                       \n"
    "movdqa    %2,%%xmm5                       \n"
  :
  : "m"(kARGBToU),         // %0
    "m"(kARGBToV),         // %1
    "m"(kAddUV128)         // %2
  :
#if defined(__SSE2__)
    "xmm3", "xmm4", "xmm5"
#endif
 );
 asm volatile (
    "sub       %1,%2                           \n"
  "1:                                          \n"
    "movdqu    (%0),%%xmm0                     \n"
    "movdqu    0x10(%0),%%xmm1                 \n"
    "movdqu    0x20(%0),%%xmm2                 \n"
    "movdqu    0x30(%0),%%xmm6                 \n"
    "movdqu    (%0,%4,1),%%xmm7                \n"
    "pavgb     %%xmm7,%%xmm0                   \n"
    "movdqu    0x10(%0,%4,1),%%xmm7            \n"
    "pavgb     %%xmm7,%%xmm1                   \n"
    "movdqu    0x20(%0,%4,1),%%xmm7            \n"
    "pavgb     %%xmm7,%%xmm2                   \n"
    "movdqu    0x30(%0,%4,1),%%xmm7            \n"
    "pavgb     %%xmm7,%%xmm6                   \n"
    "lea       0x40(%0),%0                     \n"
    "movdqa    %%xmm0,%%xmm7                   \n"
    "shufps    $0x88,%%xmm1,%%xmm0             \n"
    "shufps    $0xdd,%%xmm1,%%xmm7             \n"
    "pavgb     %%xmm7,%%xmm0                   \n"
    "movdqa    %%xmm2,%%xmm7                   \n"
    "shufps    $0x88,%%xmm6,%%xmm2             \n"
    "shufps    $0xdd,%%xmm6,%%xmm7             \n"
    "pavgb     %%xmm7,%%xmm2                   \n"
    "movdqa    %%xmm0,%%xmm1                   \n"
    "movdqa    %%xmm2,%%xmm6                   \n"
    "pmaddubsw %%xmm4,%%xmm0                   \n"
    "pmaddubsw %%xmm4,%%xmm2                   \n"
    "pmaddubsw %%xmm3,%%xmm1                   \n"
    "pmaddubsw %%xmm3,%%xmm6                   \n"
    "phaddw    %%xmm2,%%xmm0                   \n"
    "phaddw    %%xmm6,%%xmm1                   \n"
    "psraw     $0x8,%%xmm0                     \n"
    "psraw     $0x8,%%xmm1                     \n"
    "packsswb  %%xmm1,%%xmm0                   \n"
    "paddb     %%xmm5,%%xmm0                   \n"
    "movlps    %%xmm0,(%1)                     \n"
    "movhps    %%xmm0,(%1,%2,1)                \n"
    "lea       0x8(%1),%1                      \n"
    "sub       $0x10,%3                        \n"
    "ja        1b                              \n"
  : "+r"(src_argb0),       // %0
    "+r"(dst_u),           // %1
    "+r"(dst_v),           // %2
    "+rm"(width)           // %3
  : "r"(static_cast<intptr_t>(src_stride_argb))
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm2", "xmm6", "xmm7"
#endif
);
}
#endif

#ifdef HAS_I420TOARGBROW_SSSE3
#define UB 127 /* min(63,static_cast<int8>(2.018 * 64)) */
#define UG -25 /* static_cast<int8>(-0.391 * 64 - 0.5) */
#define UR 0

#define VB 0
#define VG -52 /* static_cast<int8>(-0.813 * 64 - 0.5) */
#define VR 102 /* static_cast<int8>(1.596 * 64 + 0.5) */

// Bias
#define BB UB * 128 + VB * 128
#define BG UG * 128 + VG * 128
#define BR UR * 128 + VR * 128

#define YG 74 /* static_cast<int8>(1.164 * 64 + 0.5) */

#if defined(__APPLE__) || defined(__x86_64__)
#define OMITFP
#else
#define OMITFP __attribute__((optimize("omit-frame-pointer")))
#endif

struct {
  vec8 kUVToB;
  vec8 kUVToG;
  vec8 kUVToR;
  vec16 kUVBiasB;
  vec16 kUVBiasG;
  vec16 kUVBiasR;
  vec16 kYSub16;
  vec16 kYToRgb;
} CONST SIMD_ALIGNED(kYuvConstants) = {
  { UB, VB, UB, VB, UB, VB, UB, VB, UB, VB, UB, VB, UB, VB, UB, VB },
  { UG, VG, UG, VG, UG, VG, UG, VG, UG, VG, UG, VG, UG, VG, UG, VG },
  { UR, VR, UR, VR, UR, VR, UR, VR, UR, VR, UR, VR, UR, VR, UR, VR },
  { BB, BB, BB, BB, BB, BB, BB, BB },
  { BG, BG, BG, BG, BG, BG, BG, BG },
  { BR, BR, BR, BR, BR, BR, BR, BR },
  { 16, 16, 16, 16, 16, 16, 16, 16 },
  { YG, YG, YG, YG, YG, YG, YG, YG }
};

// Convert 8 pixels
#define YUVTORGB                                                               \
    "movd       (%1),%%xmm0                    \n"                             \
    "movd       (%1,%2,1),%%xmm1               \n"                             \
    "lea        0x4(%1),%1                     \n"                             \
    "punpcklbw  %%xmm1,%%xmm0                  \n"                             \
    "punpcklwd  %%xmm0,%%xmm0                  \n"                             \
    "movdqa     %%xmm0,%%xmm1                  \n"                             \
    "movdqa     %%xmm0,%%xmm2                  \n"                             \
    "pmaddubsw  (%5),%%xmm0                    \n"                             \
    "pmaddubsw  16(%5),%%xmm1                  \n"                             \
    "pmaddubsw  32(%5),%%xmm2                  \n"                             \
    "psubw      48(%5),%%xmm0                  \n"                             \
    "psubw      64(%5),%%xmm1                  \n"                             \
    "psubw      80(%5),%%xmm2                  \n"                             \
    "movq       (%0),%%xmm3                    \n"                             \
    "lea        0x8(%0),%0                     \n"                             \
    "punpcklbw  %%xmm4,%%xmm3                  \n"                             \
    "psubsw     96(%5),%%xmm3                  \n"                             \
    "pmullw     112(%5),%%xmm3                 \n"                             \
    "paddsw     %%xmm3,%%xmm0                  \n"                             \
    "paddsw     %%xmm3,%%xmm1                  \n"                             \
    "paddsw     %%xmm3,%%xmm2                  \n"                             \
    "psraw      $0x6,%%xmm0                    \n"                             \
    "psraw      $0x6,%%xmm1                    \n"                             \
    "psraw      $0x6,%%xmm2                    \n"                             \
    "packuswb   %%xmm0,%%xmm0                  \n"                             \
    "packuswb   %%xmm1,%%xmm1                  \n"                             \
    "packuswb   %%xmm2,%%xmm2                  \n"

void OMITFP I420ToARGBRow_SSSE3(const uint8* y_buf,  // rdi
                                const uint8* u_buf,  // rsi
                                const uint8* v_buf,  // rdx
                                uint8* rgb_buf,      // rcx
                                int width) {         // r8
  asm volatile (
    "sub       %1,%2                           \n"
    "pcmpeqb   %%xmm5,%%xmm5                   \n"
    "pxor      %%xmm4,%%xmm4                   \n"

  "1:                                          \n"
    YUVTORGB
    "punpcklbw %%xmm1,%%xmm0                   \n"
    "punpcklbw %%xmm5,%%xmm2                   \n"
    "movdqa    %%xmm0,%%xmm1                   \n"
    "punpcklwd %%xmm2,%%xmm0                   \n"
    "punpckhwd %%xmm2,%%xmm1                   \n"
    "movdqa    %%xmm0,(%3)                     \n"
    "movdqa    %%xmm1,0x10(%3)                 \n"
    "lea       0x20(%3),%3                     \n"
    "sub       $0x8,%4                         \n"
    "ja        1b                              \n"
  : "+r"(y_buf),    // %0
    "+r"(u_buf),    // %1
    "+r"(v_buf),    // %2
    "+r"(rgb_buf),  // %3
    "+rm"(width)    // %4
  : "r"(&kYuvConstants.kUVToB) // %5
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5"
#endif
  );
}

void OMITFP I420ToBGRARow_SSSE3(const uint8* y_buf,  // rdi
                                const uint8* u_buf,  // rsi
                                const uint8* v_buf,  // rdx
                                uint8* rgb_buf,      // rcx
                                int width) {         // r8
  asm volatile (
    "sub       %1,%2                           \n"
    "pcmpeqb   %%xmm5,%%xmm5                   \n"
    "pxor      %%xmm4,%%xmm4                   \n"

  "1:                                          \n"
    YUVTORGB
    "pcmpeqb   %%xmm5,%%xmm5                   \n"
    "punpcklbw %%xmm0,%%xmm1                   \n"
    "punpcklbw %%xmm2,%%xmm5                   \n"
    "movdqa    %%xmm5,%%xmm0                   \n"
    "punpcklwd %%xmm1,%%xmm5                   \n"
    "punpckhwd %%xmm1,%%xmm0                   \n"
    "movdqa    %%xmm5,(%3)                     \n"
    "movdqa    %%xmm0,0x10(%3)                 \n"
    "lea       0x20(%3),%3                     \n"
    "sub       $0x8,%4                         \n"
    "ja        1b                              \n"
  : "+r"(y_buf),    // %0
    "+r"(u_buf),    // %1
    "+r"(v_buf),    // %2
    "+r"(rgb_buf),  // %3
    "+rm"(width)    // %4
  : "r"(&kYuvConstants.kUVToB) // %5
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5"
#endif
  );
}

void OMITFP I420ToABGRRow_SSSE3(const uint8* y_buf,  // rdi
                                const uint8* u_buf,  // rsi
                                const uint8* v_buf,  // rdx
                                uint8* rgb_buf,      // rcx
                                int width) {         // r8
  asm volatile (
    "sub       %1,%2                           \n"
    "pcmpeqb   %%xmm5,%%xmm5                   \n"
    "pxor      %%xmm4,%%xmm4                   \n"

  "1:                                          \n"
    YUVTORGB
    "punpcklbw %%xmm1,%%xmm2                   \n"
    "punpcklbw %%xmm5,%%xmm0                   \n"
    "movdqa    %%xmm2,%%xmm1                   \n"
    "punpcklwd %%xmm0,%%xmm2                   \n"
    "punpckhwd %%xmm0,%%xmm1                   \n"
    "movdqa    %%xmm2,(%3)                     \n"
    "movdqa    %%xmm1,0x10(%3)                 \n"
    "lea       0x20(%3),%3                     \n"
    "sub       $0x8,%4                         \n"
    "ja        1b                              \n"
  : "+r"(y_buf),    // %0
    "+r"(u_buf),    // %1
    "+r"(v_buf),    // %2
    "+r"(rgb_buf),  // %3
    "+rm"(width)    // %4
  : "r"(&kYuvConstants.kUVToB) // %5
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5"
#endif
  );
}

void OMITFP I444ToARGBRow_SSSE3(const uint8* y_buf,  // rdi
                                const uint8* u_buf,  // rsi
                                const uint8* v_buf,  // rdx
                                uint8* rgb_buf,      // rcx
                                int width) {         // r8
  asm volatile (
    "sub       %1,%2                           \n"
    "pcmpeqb   %%xmm5,%%xmm5                   \n"
    "pxor      %%xmm4,%%xmm4                   \n"

  "1:                                          \n"
    "movd      (%1),%%xmm0                     \n"
    "movd      (%1,%2,1),%%xmm1                \n"
    "lea       0x4(%1),%1                      \n"
    "punpcklbw %%xmm1,%%xmm0                   \n"
    "movdqa    %%xmm0,%%xmm1                   \n"
    "movdqa    %%xmm0,%%xmm2                   \n"
    "pmaddubsw (%5),%%xmm0                     \n"
    "pmaddubsw 16(%5),%%xmm1                   \n"
    "pmaddubsw 32(%5),%%xmm2                   \n"
    "psubw     48(%5),%%xmm0                   \n"
    "psubw     64(%5),%%xmm1                   \n"
    "psubw     80(%5),%%xmm2                   \n"
    "movd      (%0),%%xmm3                     \n"
    "lea       0x4(%0),%0                      \n"
    "punpcklbw %%xmm4,%%xmm3                   \n"
    "psubsw    96(%5),%%xmm3                   \n"
    "pmullw    112(%5),%%xmm3                  \n"
    "paddsw    %%xmm3,%%xmm0                   \n"
    "paddsw    %%xmm3,%%xmm1                   \n"
    "paddsw    %%xmm3,%%xmm2                   \n"
    "psraw     $0x6,%%xmm0                     \n"
    "psraw     $0x6,%%xmm1                     \n"
    "psraw     $0x6,%%xmm2                     \n"
    "packuswb  %%xmm0,%%xmm0                   \n"
    "packuswb  %%xmm1,%%xmm1                   \n"
    "packuswb  %%xmm2,%%xmm2                   \n"
    "punpcklbw %%xmm1,%%xmm0                   \n"
    "punpcklbw %%xmm5,%%xmm2                   \n"
    "punpcklwd %%xmm2,%%xmm0                   \n"
    "movdqa    %%xmm0,(%3)                     \n"
    "lea       0x10(%3),%3                     \n"
    "sub       $0x4,%4                         \n"
    "ja        1b                              \n"
  : "+r"(y_buf),    // %0
    "+r"(u_buf),    // %1
    "+r"(v_buf),    // %2
    "+r"(rgb_buf),  // %3
    "+rm"(width)    // %4
  : "r"(&kYuvConstants.kUVToB) // %5
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm2", "xmm3", "xmm4", "xmm5"
#endif
  );
}
#endif

#ifdef HAS_YTOARGBROW_SSE2

void YToARGBRow_SSE2(const uint8* y_buf,  // rdi
                     uint8* rgb_buf,      // rcx
                     int width) {         // r8
  asm volatile (
    "pcmpeqb   %%xmm4,%%xmm4                   \n"
    "pslld     $0x18,%%xmm4                    \n"
    "mov       $0x10001000,%%eax               \n"
    "movd      %%eax,%%xmm3                    \n"
    "pshufd    $0x0,%%xmm3,%%xmm3              \n"
    "mov       $0x012a012a,%%eax               \n"
    "movd      %%eax,%%xmm2                    \n"
    "pshufd    $0x0,%%xmm2,%%xmm2              \n"

  "1:                                          \n"
    // Step 1: Scale Y contribution to 8 G values. G = (y - 16) * 1.164
    "movq      (%0),%%xmm0                     \n"
    "lea       0x8(%0),%0                      \n"
    "punpcklbw %%xmm0,%%xmm0                   \n"
    "psubusw   %%xmm3,%%xmm0                   \n"
    "pmulhuw   %%xmm2,%%xmm0                   \n"
    "packuswb  %%xmm0,%%xmm0                   \n"

    // Step 2: Weave into ARGB
    "punpcklbw %%xmm0,%%xmm0                   \n"
    "movdqa    %%xmm0,%%xmm1                   \n"
    "punpcklwd %%xmm0,%%xmm0                   \n"
    "punpckhwd %%xmm1,%%xmm1                   \n"
    "por       %%xmm4,%%xmm0                   \n"
    "por       %%xmm4,%%xmm1                   \n"
    "movdqa    %%xmm0,(%1)                     \n"
    "movdqa    %%xmm1,16(%1)                   \n"
    "lea       32(%1),%1                       \n"

    "sub       $0x8,%2                         \n"
    "ja        1b                              \n"
  : "+r"(y_buf),    // %0
    "+r"(rgb_buf),  // %1
    "+rm"(width)    // %2
  :
  : "memory", "cc", "eax"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm2", "xmm3", "xmm4"
#endif
  );
}
#endif

#ifdef HAS_ARGBTOYROW_SSSE3
void ABGRToYRow_SSSE3(const uint8* src_argb, uint8* dst_y, int pix) {
  SIMD_ALIGNED(uint8 row[kMaxStride]);
  ABGRToARGBRow_SSSE3(src_argb, row, pix);
  ARGBToYRow_SSSE3(row, dst_y, pix);
}

void BGRAToYRow_SSSE3(const uint8* src_argb, uint8* dst_y, int pix) {
  SIMD_ALIGNED(uint8 row[kMaxStride]);
  BGRAToARGBRow_SSSE3(src_argb, row, pix);
  ARGBToYRow_SSSE3(row, dst_y, pix);
}

void ABGRToYRow_Unaligned_SSSE3(const uint8* src_argb, uint8* dst_y, int pix) {
  SIMD_ALIGNED(uint8 row[kMaxStride]);
  ABGRToARGBRow_C(src_argb, row, pix);
  ARGBToYRow_SSSE3(row, dst_y, pix);
}

void BGRAToYRow_Unaligned_SSSE3(const uint8* src_argb, uint8* dst_y, int pix) {
  SIMD_ALIGNED(uint8 row[kMaxStride]);
  BGRAToARGBRow_C(src_argb, row, pix);
  ARGBToYRow_SSSE3(row, dst_y, pix);
}
#endif

#ifdef HAS_ARGBTOUVROW_SSSE3
void ABGRToUVRow_SSSE3(const uint8* src_argb, int src_stride_argb,
                       uint8* dst_u, uint8* dst_v, int pix) {
  SIMD_ALIGNED(uint8 row[kMaxStride * 2]);
  ABGRToARGBRow_SSSE3(src_argb, row, pix);
  ABGRToARGBRow_SSSE3(src_argb + src_stride_argb, row + kMaxStride, pix);
  ARGBToUVRow_SSSE3(row, kMaxStride, dst_u, dst_v, pix);
}

void BGRAToUVRow_SSSE3(const uint8* src_argb, int src_stride_argb,
                       uint8* dst_u, uint8* dst_v, int pix) {
  SIMD_ALIGNED(uint8 row[kMaxStride * 2]);
  BGRAToARGBRow_SSSE3(src_argb, row, pix);
  BGRAToARGBRow_SSSE3(src_argb + src_stride_argb, row + kMaxStride, pix);
  ARGBToUVRow_SSSE3(row, kMaxStride, dst_u, dst_v, pix);
}

void ABGRToUVRow_Unaligned_SSSE3(const uint8* src_argb, int src_stride_argb,
                                 uint8* dst_u, uint8* dst_v, int pix) {
  SIMD_ALIGNED(uint8 row[kMaxStride * 2]);
  ABGRToARGBRow_C(src_argb, row, pix);
  ABGRToARGBRow_C(src_argb + src_stride_argb, row + kMaxStride, pix);
  ARGBToUVRow_SSSE3(row, kMaxStride, dst_u, dst_v, pix);
}

void BGRAToUVRow_Unaligned_SSSE3(const uint8* src_argb, int src_stride_argb,
                                 uint8* dst_u, uint8* dst_v, int pix) {
  SIMD_ALIGNED(uint8 row[kMaxStride * 2]);
  BGRAToARGBRow_C(src_argb, row, pix);
  BGRAToARGBRow_C(src_argb + src_stride_argb, row + kMaxStride, pix);
  ARGBToUVRow_SSSE3(row, kMaxStride, dst_u, dst_v, pix);
}
#endif

#ifdef HAS_MIRRORROW_SSSE3

// Shuffle table for reversing the bytes.
CONST uvec8 kShuffleMirror = {
  15u, 14u, 13u, 12u, 11u, 10u, 9u, 8u, 7u, 6u, 5u, 4u, 3u, 2u, 1u, 0u
};

void MirrorRow_SSSE3(const uint8* src, uint8* dst, int width) {
  intptr_t temp_width = static_cast<intptr_t>(width);
  asm volatile (
    "movdqa    %3,%%xmm5                       \n"
    "lea       -0x10(%0),%0                    \n"
  "1:                                          \n"
    "movdqa    (%0,%2),%%xmm0                  \n"
    "pshufb    %%xmm5,%%xmm0                   \n"
    "sub       $0x10,%2                        \n"
    "movdqa    %%xmm0,(%1)                     \n"
    "lea       0x10(%1),%1                     \n"
    "ja        1b                              \n"
  : "+r"(src),  // %0
    "+r"(dst),  // %1
    "+r"(temp_width)  // %2
  : "m"(kShuffleMirror) // %3
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm5"
#endif
  );
}
#endif

#ifdef HAS_MIRRORROW_SSE2

void MirrorRow_SSE2(const uint8* src, uint8* dst, int width) {
  intptr_t temp_width = static_cast<intptr_t>(width);
  asm volatile (
    "lea       -0x10(%0),%0                    \n"
  "1:                                          \n"
    "movdqu    (%0,%2),%%xmm0                  \n"
    "movdqu    %%xmm0,%%xmm1                   \n"
    "psllw     $0x8,%%xmm0                     \n"
    "psrlw     $0x8,%%xmm1                     \n"
    "por       %%xmm1,%%xmm0                   \n"
    "pshuflw   $0x1b,%%xmm0,%%xmm0             \n"
    "pshufhw   $0x1b,%%xmm0,%%xmm0             \n"
    "pshufd    $0x4e,%%xmm0,%%xmm0             \n"
    "sub       $0x10,%2                        \n"
    "movdqu    %%xmm0,(%1)                     \n"
    "lea       0x10(%1),%1                     \n"
    "ja        1b                              \n"
  : "+r"(src),  // %0
    "+r"(dst),  // %1
    "+r"(temp_width)  // %2
  :
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1"
#endif
  );
}
#endif

#ifdef HAS_YUY2TOYROW_SSE2
void YUY2ToYRow_SSE2(const uint8* src_yuy2, uint8* dst_y, int pix) {
  asm volatile (
    "pcmpeqb   %%xmm5,%%xmm5                   \n"
    "psrlw     $0x8,%%xmm5                     \n"
  "1:                                          \n"
    "movdqa    (%0),%%xmm0                     \n"
    "movdqa    0x10(%0),%%xmm1                 \n"
    "lea       0x20(%0),%0                     \n"
    "pand      %%xmm5,%%xmm0                   \n"
    "pand      %%xmm5,%%xmm1                   \n"
    "packuswb  %%xmm1,%%xmm0                   \n"
    "movdqa    %%xmm0,(%1)                     \n"
    "lea       0x10(%1),%1                     \n"
    "sub       $0x10,%2                        \n"
    "ja        1b                              \n"
  : "+r"(src_yuy2),  // %0
    "+r"(dst_y),     // %1
    "+r"(pix)        // %2
  :
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm5"
#endif
  );
}

void YUY2ToUVRow_SSE2(const uint8* src_yuy2, int stride_yuy2,
                      uint8* dst_u, uint8* dst_y, int pix) {
  asm volatile (
    "pcmpeqb   %%xmm5,%%xmm5                   \n"
    "psrlw     $0x8,%%xmm5                     \n"
    "sub       %1,%2                           \n"
  "1:                                          \n"
    "movdqa    (%0),%%xmm0                     \n"
    "movdqa    0x10(%0),%%xmm1                 \n"
    "movdqa    (%0,%4,1),%%xmm2                \n"
    "movdqa    0x10(%0,%4,1),%%xmm3            \n"
    "lea       0x20(%0),%0                     \n"
    "pavgb     %%xmm2,%%xmm0                   \n"
    "pavgb     %%xmm3,%%xmm1                   \n"
    "psrlw     $0x8,%%xmm0                     \n"
    "psrlw     $0x8,%%xmm1                     \n"
    "packuswb  %%xmm1,%%xmm0                   \n"
    "movdqa    %%xmm0,%%xmm1                   \n"
    "pand      %%xmm5,%%xmm0                   \n"
    "packuswb  %%xmm0,%%xmm0                   \n"
    "psrlw     $0x8,%%xmm1                     \n"
    "packuswb  %%xmm1,%%xmm1                   \n"
    "movq      %%xmm0,(%1)                     \n"
    "movq      %%xmm1,(%1,%2)                  \n"
    "lea       0x8(%1),%1                      \n"
    "sub       $0x10,%3                        \n"
    "ja        1b                              \n"
  : "+r"(src_yuy2),    // %0
    "+r"(dst_u),       // %1
    "+r"(dst_y),       // %2
    "+r"(pix)          // %3
  : "r"(static_cast<intptr_t>(stride_yuy2))  // %4
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm2", "xmm3", "xmm5"
#endif
  );
}

void YUY2ToYRow_Unaligned_SSE2(const uint8* src_yuy2,
                               uint8* dst_y, int pix) {
  asm volatile (
    "pcmpeqb   %%xmm5,%%xmm5                   \n"
    "psrlw     $0x8,%%xmm5                     \n"
  "1:                                          \n"
    "movdqu    (%0),%%xmm0                     \n"
    "movdqu    0x10(%0),%%xmm1                 \n"
    "lea       0x20(%0),%0                     \n"
    "pand      %%xmm5,%%xmm0                   \n"
    "pand      %%xmm5,%%xmm1                   \n"
    "packuswb  %%xmm1,%%xmm0                   \n"
    "movdqu    %%xmm0,(%1)                     \n"
    "lea       0x10(%1),%1                     \n"
    "sub       $0x10,%2                        \n"
    "ja        1b                              \n"
  : "+r"(src_yuy2),  // %0
    "+r"(dst_y),     // %1
    "+r"(pix)        // %2
  :
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm5"
#endif
  );
}

void YUY2ToUVRow_Unaligned_SSE2(const uint8* src_yuy2,
                                int stride_yuy2,
                                uint8* dst_u, uint8* dst_y,
                                int pix) {
  asm volatile (
    "pcmpeqb   %%xmm5,%%xmm5                   \n"
    "psrlw     $0x8,%%xmm5                     \n"
    "sub       %1,%2                           \n"
  "1:                                          \n"
    "movdqu    (%0),%%xmm0                     \n"
    "movdqu    0x10(%0),%%xmm1                 \n"
    "movdqu    (%0,%4,1),%%xmm2                \n"
    "movdqu    0x10(%0,%4,1),%%xmm3            \n"
    "lea       0x20(%0),%0                     \n"
    "pavgb     %%xmm2,%%xmm0                   \n"
    "pavgb     %%xmm3,%%xmm1                   \n"
    "psrlw     $0x8,%%xmm0                     \n"
    "psrlw     $0x8,%%xmm1                     \n"
    "packuswb  %%xmm1,%%xmm0                   \n"
    "movdqa    %%xmm0,%%xmm1                   \n"
    "pand      %%xmm5,%%xmm0                   \n"
    "packuswb  %%xmm0,%%xmm0                   \n"
    "psrlw     $0x8,%%xmm1                     \n"
    "packuswb  %%xmm1,%%xmm1                   \n"
    "movq      %%xmm0,(%1)                     \n"
    "movq      %%xmm1,(%1,%2)                  \n"
    "lea       0x8(%1),%1                      \n"
    "sub       $0x10,%3                        \n"
    "ja        1b                              \n"
  : "+r"(src_yuy2),    // %0
    "+r"(dst_u),       // %1
    "+r"(dst_y),       // %2
    "+r"(pix)          // %3
  : "r"(static_cast<intptr_t>(stride_yuy2))  // %4
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm2", "xmm3", "xmm5"
#endif
);
}

void UYVYToYRow_SSE2(const uint8* src_uyvy, uint8* dst_y, int pix) {
  asm volatile (
  "1:                                          \n"
    "movdqa    (%0),%%xmm0                     \n"
    "movdqa    0x10(%0),%%xmm1                 \n"
    "lea       0x20(%0),%0                     \n"
    "psrlw     $0x8,%%xmm0                     \n"
    "psrlw     $0x8,%%xmm1                     \n"
    "packuswb  %%xmm1,%%xmm0                   \n"
    "movdqa    %%xmm0,(%1)                     \n"
    "lea       0x10(%1),%1                     \n"
    "sub       $0x10,%2                        \n"
    "ja        1b                              \n"
  : "+r"(src_uyvy),  // %0
    "+r"(dst_y),     // %1
    "+r"(pix)        // %2
  :
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1"
#endif
  );
}

void UYVYToUVRow_SSE2(const uint8* src_uyvy, int stride_uyvy,
                      uint8* dst_u, uint8* dst_y, int pix) {
  asm volatile (
    "pcmpeqb   %%xmm5,%%xmm5                   \n"
    "psrlw     $0x8,%%xmm5                     \n"
    "sub       %1,%2                           \n"
  "1:                                          \n"
    "movdqa    (%0),%%xmm0                     \n"
    "movdqa    0x10(%0),%%xmm1                 \n"
    "movdqa    (%0,%4,1),%%xmm2                \n"
    "movdqa    0x10(%0,%4,1),%%xmm3            \n"
    "lea       0x20(%0),%0                     \n"
    "pavgb     %%xmm2,%%xmm0                   \n"
    "pavgb     %%xmm3,%%xmm1                   \n"
    "pand      %%xmm5,%%xmm0                   \n"
    "pand      %%xmm5,%%xmm1                   \n"
    "packuswb  %%xmm1,%%xmm0                   \n"
    "movdqa    %%xmm0,%%xmm1                   \n"
    "pand      %%xmm5,%%xmm0                   \n"
    "packuswb  %%xmm0,%%xmm0                   \n"
    "psrlw     $0x8,%%xmm1                     \n"
    "packuswb  %%xmm1,%%xmm1                   \n"
    "movq      %%xmm0,(%1)                     \n"
    "movq      %%xmm1,(%1,%2)                  \n"
    "lea       0x8(%1),%1                      \n"
    "sub       $0x10,%3                        \n"
    "ja        1b                              \n"
  : "+r"(src_uyvy),    // %0
    "+r"(dst_u),       // %1
    "+r"(dst_y),       // %2
    "+r"(pix)          // %3
  : "r"(static_cast<intptr_t>(stride_uyvy))  // %4
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm2", "xmm3", "xmm5"
#endif
  );
}

void UYVYToYRow_Unaligned_SSE2(const uint8* src_uyvy,
                               uint8* dst_y, int pix) {
  asm volatile (
  "1:                                          \n"
    "movdqu    (%0),%%xmm0                     \n"
    "movdqu    0x10(%0),%%xmm1                 \n"
    "lea       0x20(%0),%0                     \n"
    "psrlw     $0x8,%%xmm0                     \n"
    "psrlw     $0x8,%%xmm1                     \n"
    "packuswb  %%xmm1,%%xmm0                   \n"
    "movdqu    %%xmm0,(%1)                     \n"
    "lea       0x10(%1),%1                     \n"
    "sub       $0x10,%2                        \n"
    "ja        1b                              \n"
  : "+r"(src_uyvy),  // %0
    "+r"(dst_y),     // %1
    "+r"(pix)        // %2
  :
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1"
#endif
  );
}

void UYVYToUVRow_Unaligned_SSE2(const uint8* src_uyvy, int stride_uyvy,
                                uint8* dst_u, uint8* dst_y, int pix) {
  asm volatile (
    "pcmpeqb   %%xmm5,%%xmm5                   \n"
    "psrlw     $0x8,%%xmm5                     \n"
    "sub       %1,%2                           \n"
  "1:                                          \n"
    "movdqu    (%0),%%xmm0                     \n"
    "movdqu    0x10(%0),%%xmm1                 \n"
    "movdqu    (%0,%4,1),%%xmm2                \n"
    "movdqu    0x10(%0,%4,1),%%xmm3            \n"
    "lea       0x20(%0),%0                     \n"
    "pavgb     %%xmm2,%%xmm0                   \n"
    "pavgb     %%xmm3,%%xmm1                   \n"
    "pand      %%xmm5,%%xmm0                   \n"
    "pand      %%xmm5,%%xmm1                   \n"
    "packuswb  %%xmm1,%%xmm0                   \n"
    "movdqa    %%xmm0,%%xmm1                   \n"
    "pand      %%xmm5,%%xmm0                   \n"
    "packuswb  %%xmm0,%%xmm0                   \n"
    "psrlw     $0x8,%%xmm1                     \n"
    "packuswb  %%xmm1,%%xmm1                   \n"
    "movq      %%xmm0,(%1)                     \n"
    "movq      %%xmm1,(%1,%2)                  \n"
    "lea       0x8(%1),%1                      \n"
    "sub       $0x10,%3                        \n"
    "ja        1b                              \n"
  : "+r"(src_uyvy),    // %0
    "+r"(dst_u),       // %1
    "+r"(dst_y),       // %2
    "+r"(pix)          // %3
  : "r"(static_cast<intptr_t>(stride_uyvy))  // %4
  : "memory", "cc"
#if defined(__SSE2__)
    , "xmm0", "xmm1", "xmm2", "xmm3", "xmm5"
#endif
  );
}

#endif  // HAS_YUY2TOYROW_SSE2

#ifdef __cplusplus
}  // extern "C"
}  // namespace libyuv
#endif