ffmpeg/libswscale/swscale_template.c

/*
 * Copyright (C) 2001-2003 Michael Niedermayer <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 General Public License as published by
 * the Free Software Foundation; either version 2 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 General Public License for more details.
 *
 * You should have received a copy of the GNU 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
 *
 * The C code (not assembly, MMX, ...) of this file can be used
 * under the LGPL license.
 */

#undef REAL_MOVNTQ
#undef MOVNTQ
#undef PAVGB
#undef PREFETCH

#if COMPILE_TEMPLATE_AMD3DNOW
#define PREFETCH  "prefetch"
#elif COMPILE_TEMPLATE_MMX2
#define PREFETCH "prefetchnta"
#else
#define PREFETCH  " # nop"
#endif

#if COMPILE_TEMPLATE_MMX2
#define PAVGB(a,b) "pavgb " #a ", " #b " \n\t"
#elif COMPILE_TEMPLATE_AMD3DNOW
#define PAVGB(a,b) "pavgusb " #a ", " #b " \n\t"
#endif

#if COMPILE_TEMPLATE_MMX2
#define REAL_MOVNTQ(a,b) "movntq " #a ", " #b " \n\t"
#else
#define REAL_MOVNTQ(a,b) "movq " #a ", " #b " \n\t"
#endif
#define MOVNTQ(a,b)  REAL_MOVNTQ(a,b)

#if COMPILE_TEMPLATE_ALTIVEC
#include "ppc/swscale_altivec_template.c"
#endif

#define YSCALEYUV2YV12X(x, offset, dest, width) \
    __asm__ volatile(\
        "xor                          %%"REG_a", %%"REG_a"  \n\t"\
        "movq             "VROUNDER_OFFSET"(%0), %%mm3      \n\t"\
        "movq                             %%mm3, %%mm4      \n\t"\
        "lea                     " offset "(%0), %%"REG_d"  \n\t"\
        "mov                        (%%"REG_d"), %%"REG_S"  \n\t"\
        ASMALIGN(4) /* FIXME Unroll? */\
        "1:                                                 \n\t"\
        "movq                      8(%%"REG_d"), %%mm0      \n\t" /* filterCoeff */\
        "movq   "  x "(%%"REG_S", %%"REG_a", 2), %%mm2      \n\t" /* srcData */\
        "movq 8+"  x "(%%"REG_S", %%"REG_a", 2), %%mm5      \n\t" /* srcData */\
        "add                                $16, %%"REG_d"  \n\t"\
        "mov                        (%%"REG_d"), %%"REG_S"  \n\t"\
        "test                         %%"REG_S", %%"REG_S"  \n\t"\
        "pmulhw                           %%mm0, %%mm2      \n\t"\
        "pmulhw                           %%mm0, %%mm5      \n\t"\
        "paddw                            %%mm2, %%mm3      \n\t"\
        "paddw                            %%mm5, %%mm4      \n\t"\
        " jnz                                1b             \n\t"\
        "psraw                               $3, %%mm3      \n\t"\
        "psraw                               $3, %%mm4      \n\t"\
        "packuswb                         %%mm4, %%mm3      \n\t"\
        MOVNTQ(%%mm3, (%1, %%REGa))\
        "add                                 $8, %%"REG_a"  \n\t"\
        "cmp                                 %2, %%"REG_a"  \n\t"\
        "movq             "VROUNDER_OFFSET"(%0), %%mm3      \n\t"\
        "movq                             %%mm3, %%mm4      \n\t"\
        "lea                     " offset "(%0), %%"REG_d"  \n\t"\
        "mov                        (%%"REG_d"), %%"REG_S"  \n\t"\
        "jb                                  1b             \n\t"\
        :: "r" (&c->redDither),\
        "r" (dest), "g" (width)\
        : "%"REG_a, "%"REG_d, "%"REG_S\
    );

#define YSCALEYUV2YV12X_ACCURATE(x, offset, dest, width) \
    __asm__ volatile(\
        "lea                     " offset "(%0), %%"REG_d"  \n\t"\
        "xor                          %%"REG_a", %%"REG_a"  \n\t"\
        "pxor                             %%mm4, %%mm4      \n\t"\
        "pxor                             %%mm5, %%mm5      \n\t"\
        "pxor                             %%mm6, %%mm6      \n\t"\
        "pxor                             %%mm7, %%mm7      \n\t"\
        "mov                        (%%"REG_d"), %%"REG_S"  \n\t"\
        ASMALIGN(4) \
        "1:                                                 \n\t"\
        "movq   "  x "(%%"REG_S", %%"REG_a", 2), %%mm0      \n\t" /* srcData */\
        "movq 8+"  x "(%%"REG_S", %%"REG_a", 2), %%mm2      \n\t" /* srcData */\
        "mov        "STR(APCK_PTR2)"(%%"REG_d"), %%"REG_S"  \n\t"\
        "movq   "  x "(%%"REG_S", %%"REG_a", 2), %%mm1      \n\t" /* srcData */\
        "movq                             %%mm0, %%mm3      \n\t"\
        "punpcklwd                        %%mm1, %%mm0      \n\t"\
        "punpckhwd                        %%mm1, %%mm3      \n\t"\
        "movq       "STR(APCK_COEF)"(%%"REG_d"), %%mm1      \n\t" /* filterCoeff */\
        "pmaddwd                          %%mm1, %%mm0      \n\t"\
        "pmaddwd                          %%mm1, %%mm3      \n\t"\
        "paddd                            %%mm0, %%mm4      \n\t"\
        "paddd                            %%mm3, %%mm5      \n\t"\
        "movq 8+"  x "(%%"REG_S", %%"REG_a", 2), %%mm3      \n\t" /* srcData */\
        "mov        "STR(APCK_SIZE)"(%%"REG_d"), %%"REG_S"  \n\t"\
        "add                  $"STR(APCK_SIZE)", %%"REG_d"  \n\t"\
        "test                         %%"REG_S", %%"REG_S"  \n\t"\
        "movq                             %%mm2, %%mm0      \n\t"\
        "punpcklwd                        %%mm3, %%mm2      \n\t"\
        "punpckhwd                        %%mm3, %%mm0      \n\t"\
        "pmaddwd                          %%mm1, %%mm2      \n\t"\
        "pmaddwd                          %%mm1, %%mm0      \n\t"\
        "paddd                            %%mm2, %%mm6      \n\t"\
        "paddd                            %%mm0, %%mm7      \n\t"\
        " jnz                                1b             \n\t"\
        "psrad                              $16, %%mm4      \n\t"\
        "psrad                              $16, %%mm5      \n\t"\
        "psrad                              $16, %%mm6      \n\t"\
        "psrad                              $16, %%mm7      \n\t"\
        "movq             "VROUNDER_OFFSET"(%0), %%mm0      \n\t"\
        "packssdw                         %%mm5, %%mm4      \n\t"\
        "packssdw                         %%mm7, %%mm6      \n\t"\
        "paddw                            %%mm0, %%mm4      \n\t"\
        "paddw                            %%mm0, %%mm6      \n\t"\
        "psraw                               $3, %%mm4      \n\t"\
        "psraw                               $3, %%mm6      \n\t"\
        "packuswb                         %%mm6, %%mm4      \n\t"\
        MOVNTQ(%%mm4, (%1, %%REGa))\
        "add                                 $8, %%"REG_a"  \n\t"\
        "cmp                                 %2, %%"REG_a"  \n\t"\
        "lea                     " offset "(%0), %%"REG_d"  \n\t"\
        "pxor                             %%mm4, %%mm4      \n\t"\
        "pxor                             %%mm5, %%mm5      \n\t"\
        "pxor                             %%mm6, %%mm6      \n\t"\
        "pxor                             %%mm7, %%mm7      \n\t"\
        "mov                        (%%"REG_d"), %%"REG_S"  \n\t"\
        "jb                                  1b             \n\t"\
        :: "r" (&c->redDither),\
        "r" (dest), "g" (width)\
        : "%"REG_a, "%"REG_d, "%"REG_S\
    );

#define YSCALEYUV2YV121 \
    "mov %2, %%"REG_a"                    \n\t"\
    ASMALIGN(4) /* FIXME Unroll? */\
    "1:                                   \n\t"\
    "movq  (%0, %%"REG_a", 2), %%mm0      \n\t"\
    "movq 8(%0, %%"REG_a", 2), %%mm1      \n\t"\
    "psraw                 $7, %%mm0      \n\t"\
    "psraw                 $7, %%mm1      \n\t"\
    "packuswb           %%mm1, %%mm0      \n\t"\
    MOVNTQ(%%mm0, (%1, %%REGa))\
    "add                   $8, %%"REG_a"  \n\t"\
    "jnc                   1b             \n\t"

#define YSCALEYUV2YV121_ACCURATE \
    "mov %2, %%"REG_a"                    \n\t"\
    "pcmpeqw %%mm7, %%mm7                 \n\t"\
    "psrlw                 $15, %%mm7     \n\t"\
    "psllw                  $6, %%mm7     \n\t"\
    ASMALIGN(4) /* FIXME Unroll? */\
    "1:                                   \n\t"\
    "movq  (%0, %%"REG_a", 2), %%mm0      \n\t"\
    "movq 8(%0, %%"REG_a", 2), %%mm1      \n\t"\
    "paddsw             %%mm7, %%mm0      \n\t"\
    "paddsw             %%mm7, %%mm1      \n\t"\
    "psraw                 $7, %%mm0      \n\t"\
    "psraw                 $7, %%mm1      \n\t"\
    "packuswb           %%mm1, %%mm0      \n\t"\
    MOVNTQ(%%mm0, (%1, %%REGa))\
    "add                   $8, %%"REG_a"  \n\t"\
    "jnc                   1b             \n\t"

/*
    :: "m" (-lumFilterSize), "m" (-chrFilterSize),
       "m" (lumMmxFilter+lumFilterSize*4), "m" (chrMmxFilter+chrFilterSize*4),
       "r" (dest), "m" (dstW),
       "m" (lumSrc+lumFilterSize), "m" (chrSrc+chrFilterSize)
    : "%eax", "%ebx", "%ecx", "%edx", "%esi"
*/
#define YSCALEYUV2PACKEDX_UV \
    __asm__ volatile(\
        "xor                   %%"REG_a", %%"REG_a"     \n\t"\
        ASMALIGN(4)\
        "nop                                            \n\t"\
        "1:                                             \n\t"\
        "lea "CHR_MMX_FILTER_OFFSET"(%0), %%"REG_d"     \n\t"\
        "mov                 (%%"REG_d"), %%"REG_S"     \n\t"\
        "movq      "VROUNDER_OFFSET"(%0), %%mm3         \n\t"\
        "movq                      %%mm3, %%mm4         \n\t"\
        ASMALIGN(4)\
        "2:                                             \n\t"\
        "movq               8(%%"REG_d"), %%mm0         \n\t" /* filterCoeff */\
        "movq     (%%"REG_S", %%"REG_a"), %%mm2         \n\t" /* UsrcData */\
        "movq "AV_STRINGIFY(VOF)"(%%"REG_S", %%"REG_a"), %%mm5         \n\t" /* VsrcData */\
        "add                         $16, %%"REG_d"     \n\t"\
        "mov                 (%%"REG_d"), %%"REG_S"     \n\t"\
        "pmulhw                    %%mm0, %%mm2         \n\t"\
        "pmulhw                    %%mm0, %%mm5         \n\t"\
        "paddw                     %%mm2, %%mm3         \n\t"\
        "paddw                     %%mm5, %%mm4         \n\t"\
        "test                  %%"REG_S", %%"REG_S"     \n\t"\
        " jnz                         2b                \n\t"\

#define YSCALEYUV2PACKEDX_YA(offset,coeff,src1,src2,dst1,dst2) \
    "lea                "offset"(%0), %%"REG_d"     \n\t"\
    "mov                 (%%"REG_d"), %%"REG_S"     \n\t"\
    "movq      "VROUNDER_OFFSET"(%0), "#dst1"       \n\t"\
    "movq                    "#dst1", "#dst2"       \n\t"\
    ASMALIGN(4)\
    "2:                                             \n\t"\
    "movq               8(%%"REG_d"), "#coeff"      \n\t" /* filterCoeff */\
    "movq  (%%"REG_S", %%"REG_a", 2), "#src1"       \n\t" /* Y1srcData */\
    "movq 8(%%"REG_S", %%"REG_a", 2), "#src2"       \n\t" /* Y2srcData */\
    "add                         $16, %%"REG_d"            \n\t"\
    "mov                 (%%"REG_d"), %%"REG_S"     \n\t"\
    "pmulhw                 "#coeff", "#src1"       \n\t"\
    "pmulhw                 "#coeff", "#src2"       \n\t"\
    "paddw                   "#src1", "#dst1"       \n\t"\
    "paddw                   "#src2", "#dst2"       \n\t"\
    "test                  %%"REG_S", %%"REG_S"     \n\t"\
    " jnz                         2b                \n\t"\

#define YSCALEYUV2PACKEDX \
    YSCALEYUV2PACKEDX_UV \
    YSCALEYUV2PACKEDX_YA(LUM_MMX_FILTER_OFFSET,%%mm0,%%mm2,%%mm5,%%mm1,%%mm7) \

#define YSCALEYUV2PACKEDX_END                     \
        :: "r" (&c->redDither),                   \
            "m" (dummy), "m" (dummy), "m" (dummy),\
            "r" (dest), "m" (dstW)                \
        : "%"REG_a, "%"REG_d, "%"REG_S            \
    );

#define YSCALEYUV2PACKEDX_ACCURATE_UV \
    __asm__ volatile(\
        "xor %%"REG_a", %%"REG_a"                       \n\t"\
        ASMALIGN(4)\
        "nop                                            \n\t"\
        "1:                                             \n\t"\
        "lea "CHR_MMX_FILTER_OFFSET"(%0), %%"REG_d"     \n\t"\
        "mov                 (%%"REG_d"), %%"REG_S"     \n\t"\
        "pxor                      %%mm4, %%mm4         \n\t"\
        "pxor                      %%mm5, %%mm5         \n\t"\
        "pxor                      %%mm6, %%mm6         \n\t"\
        "pxor                      %%mm7, %%mm7         \n\t"\
        ASMALIGN(4)\
        "2:                                             \n\t"\
        "movq     (%%"REG_S", %%"REG_a"), %%mm0         \n\t" /* UsrcData */\
        "movq "AV_STRINGIFY(VOF)"(%%"REG_S", %%"REG_a"), %%mm2         \n\t" /* VsrcData */\
        "mov "STR(APCK_PTR2)"(%%"REG_d"), %%"REG_S"     \n\t"\
        "movq     (%%"REG_S", %%"REG_a"), %%mm1         \n\t" /* UsrcData */\
        "movq                      %%mm0, %%mm3         \n\t"\
        "punpcklwd                 %%mm1, %%mm0         \n\t"\
        "punpckhwd                 %%mm1, %%mm3         \n\t"\
        "movq "STR(APCK_COEF)"(%%"REG_d"),%%mm1         \n\t" /* filterCoeff */\
        "pmaddwd                   %%mm1, %%mm0         \n\t"\
        "pmaddwd                   %%mm1, %%mm3         \n\t"\
        "paddd                     %%mm0, %%mm4         \n\t"\
        "paddd                     %%mm3, %%mm5         \n\t"\
        "movq "AV_STRINGIFY(VOF)"(%%"REG_S", %%"REG_a"), %%mm3         \n\t" /* VsrcData */\
        "mov "STR(APCK_SIZE)"(%%"REG_d"), %%"REG_S"     \n\t"\
        "add           $"STR(APCK_SIZE)", %%"REG_d"     \n\t"\
        "test                  %%"REG_S", %%"REG_S"     \n\t"\
        "movq                      %%mm2, %%mm0         \n\t"\
        "punpcklwd                 %%mm3, %%mm2         \n\t"\
        "punpckhwd                 %%mm3, %%mm0         \n\t"\
        "pmaddwd                   %%mm1, %%mm2         \n\t"\
        "pmaddwd                   %%mm1, %%mm0         \n\t"\
        "paddd                     %%mm2, %%mm6         \n\t"\
        "paddd                     %%mm0, %%mm7         \n\t"\
        " jnz                         2b                \n\t"\
        "psrad                       $16, %%mm4         \n\t"\
        "psrad                       $16, %%mm5         \n\t"\
        "psrad                       $16, %%mm6         \n\t"\
        "psrad                       $16, %%mm7         \n\t"\
        "movq      "VROUNDER_OFFSET"(%0), %%mm0         \n\t"\
        "packssdw                  %%mm5, %%mm4         \n\t"\
        "packssdw                  %%mm7, %%mm6         \n\t"\
        "paddw                     %%mm0, %%mm4         \n\t"\
        "paddw                     %%mm0, %%mm6         \n\t"\
        "movq                      %%mm4, "U_TEMP"(%0)  \n\t"\
        "movq                      %%mm6, "V_TEMP"(%0)  \n\t"\

#define YSCALEYUV2PACKEDX_ACCURATE_YA(offset) \
    "lea                "offset"(%0), %%"REG_d"     \n\t"\
    "mov                 (%%"REG_d"), %%"REG_S"     \n\t"\
    "pxor                      %%mm1, %%mm1         \n\t"\
    "pxor                      %%mm5, %%mm5         \n\t"\
    "pxor                      %%mm7, %%mm7         \n\t"\
    "pxor                      %%mm6, %%mm6         \n\t"\
    ASMALIGN(4)\
    "2:                                             \n\t"\
    "movq  (%%"REG_S", %%"REG_a", 2), %%mm0         \n\t" /* Y1srcData */\
    "movq 8(%%"REG_S", %%"REG_a", 2), %%mm2         \n\t" /* Y2srcData */\
    "mov "STR(APCK_PTR2)"(%%"REG_d"), %%"REG_S"     \n\t"\
    "movq  (%%"REG_S", %%"REG_a", 2), %%mm4         \n\t" /* Y1srcData */\
    "movq                      %%mm0, %%mm3         \n\t"\
    "punpcklwd                 %%mm4, %%mm0         \n\t"\
    "punpckhwd                 %%mm4, %%mm3         \n\t"\
    "movq "STR(APCK_COEF)"(%%"REG_d"), %%mm4         \n\t" /* filterCoeff */\
    "pmaddwd                   %%mm4, %%mm0         \n\t"\
    "pmaddwd                   %%mm4, %%mm3         \n\t"\
    "paddd                     %%mm0, %%mm1         \n\t"\
    "paddd                     %%mm3, %%mm5         \n\t"\
    "movq 8(%%"REG_S", %%"REG_a", 2), %%mm3         \n\t" /* Y2srcData */\
    "mov "STR(APCK_SIZE)"(%%"REG_d"), %%"REG_S"     \n\t"\
    "add           $"STR(APCK_SIZE)", %%"REG_d"     \n\t"\
    "test                  %%"REG_S", %%"REG_S"     \n\t"\
    "movq                      %%mm2, %%mm0         \n\t"\
    "punpcklwd                 %%mm3, %%mm2         \n\t"\
    "punpckhwd                 %%mm3, %%mm0         \n\t"\
    "pmaddwd                   %%mm4, %%mm2         \n\t"\
    "pmaddwd                   %%mm4, %%mm0         \n\t"\
    "paddd                     %%mm2, %%mm7         \n\t"\
    "paddd                     %%mm0, %%mm6         \n\t"\
    " jnz                         2b                \n\t"\
    "psrad                       $16, %%mm1         \n\t"\
    "psrad                       $16, %%mm5         \n\t"\
    "psrad                       $16, %%mm7         \n\t"\
    "psrad                       $16, %%mm6         \n\t"\
    "movq      "VROUNDER_OFFSET"(%0), %%mm0         \n\t"\
    "packssdw                  %%mm5, %%mm1         \n\t"\
    "packssdw                  %%mm6, %%mm7         \n\t"\
    "paddw                     %%mm0, %%mm1         \n\t"\
    "paddw                     %%mm0, %%mm7         \n\t"\
    "movq               "U_TEMP"(%0), %%mm3         \n\t"\
    "movq               "V_TEMP"(%0), %%mm4         \n\t"\

#define YSCALEYUV2PACKEDX_ACCURATE \
    YSCALEYUV2PACKEDX_ACCURATE_UV \
    YSCALEYUV2PACKEDX_ACCURATE_YA(LUM_MMX_FILTER_OFFSET)

#define YSCALEYUV2RGBX \
    "psubw  "U_OFFSET"(%0), %%mm3       \n\t" /* (U-128)8*/\
    "psubw  "V_OFFSET"(%0), %%mm4       \n\t" /* (V-128)8*/\
    "movq            %%mm3, %%mm2       \n\t" /* (U-128)8*/\
    "movq            %%mm4, %%mm5       \n\t" /* (V-128)8*/\
    "pmulhw "UG_COEFF"(%0), %%mm3       \n\t"\
    "pmulhw "VG_COEFF"(%0), %%mm4       \n\t"\
    /* mm2=(U-128)8, mm3=ug, mm4=vg mm5=(V-128)8 */\
    "pmulhw "UB_COEFF"(%0), %%mm2       \n\t"\
    "pmulhw "VR_COEFF"(%0), %%mm5       \n\t"\
    "psubw  "Y_OFFSET"(%0), %%mm1       \n\t" /* 8(Y-16)*/\
    "psubw  "Y_OFFSET"(%0), %%mm7       \n\t" /* 8(Y-16)*/\
    "pmulhw  "Y_COEFF"(%0), %%mm1       \n\t"\
    "pmulhw  "Y_COEFF"(%0), %%mm7       \n\t"\
    /* mm1= Y1, mm2=ub, mm3=ug, mm4=vg mm5=vr, mm7=Y2 */\
    "paddw           %%mm3, %%mm4       \n\t"\
    "movq            %%mm2, %%mm0       \n\t"\
    "movq            %%mm5, %%mm6       \n\t"\
    "movq            %%mm4, %%mm3       \n\t"\
    "punpcklwd       %%mm2, %%mm2       \n\t"\
    "punpcklwd       %%mm5, %%mm5       \n\t"\
    "punpcklwd       %%mm4, %%mm4       \n\t"\
    "paddw           %%mm1, %%mm2       \n\t"\
    "paddw           %%mm1, %%mm5       \n\t"\
    "paddw           %%mm1, %%mm4       \n\t"\
    "punpckhwd       %%mm0, %%mm0       \n\t"\
    "punpckhwd       %%mm6, %%mm6       \n\t"\
    "punpckhwd       %%mm3, %%mm3       \n\t"\
    "paddw           %%mm7, %%mm0       \n\t"\
    "paddw           %%mm7, %%mm6       \n\t"\
    "paddw           %%mm7, %%mm3       \n\t"\
    /* mm0=B1, mm2=B2, mm3=G2, mm4=G1, mm5=R1, mm6=R2 */\
    "packuswb        %%mm0, %%mm2       \n\t"\
    "packuswb        %%mm6, %%mm5       \n\t"\
    "packuswb        %%mm3, %%mm4       \n\t"\

#define REAL_YSCALEYUV2PACKED(index, c) \
    "movq "CHR_MMX_FILTER_OFFSET"+8("#c"), %%mm0              \n\t"\
    "movq "LUM_MMX_FILTER_OFFSET"+8("#c"), %%mm1              \n\t"\
    "psraw                $3, %%mm0                           \n\t"\
    "psraw                $3, %%mm1                           \n\t"\
    "movq              %%mm0, "CHR_MMX_FILTER_OFFSET"+8("#c") \n\t"\
    "movq              %%mm1, "LUM_MMX_FILTER_OFFSET"+8("#c") \n\t"\
    "xor            "#index", "#index"                        \n\t"\
    ASMALIGN(4)\
    "1:                                 \n\t"\
    "movq     (%2, "#index"), %%mm2     \n\t" /* uvbuf0[eax]*/\
    "movq     (%3, "#index"), %%mm3     \n\t" /* uvbuf1[eax]*/\
    "movq "AV_STRINGIFY(VOF)"(%2, "#index"), %%mm5     \n\t" /* uvbuf0[eax+2048]*/\
    "movq "AV_STRINGIFY(VOF)"(%3, "#index"), %%mm4     \n\t" /* uvbuf1[eax+2048]*/\
    "psubw             %%mm3, %%mm2     \n\t" /* uvbuf0[eax] - uvbuf1[eax]*/\
    "psubw             %%mm4, %%mm5     \n\t" /* uvbuf0[eax+2048] - uvbuf1[eax+2048]*/\
    "movq "CHR_MMX_FILTER_OFFSET"+8("#c"), %%mm0    \n\t"\
    "pmulhw            %%mm0, %%mm2     \n\t" /* (uvbuf0[eax] - uvbuf1[eax])uvalpha1>>16*/\
    "pmulhw            %%mm0, %%mm5     \n\t" /* (uvbuf0[eax+2048] - uvbuf1[eax+2048])uvalpha1>>16*/\
    "psraw                $7, %%mm3     \n\t" /* uvbuf0[eax] - uvbuf1[eax] >>4*/\
    "psraw                $7, %%mm4     \n\t" /* uvbuf0[eax+2048] - uvbuf1[eax+2048] >>4*/\
    "paddw             %%mm2, %%mm3     \n\t" /* uvbuf0[eax]uvalpha1 - uvbuf1[eax](1-uvalpha1)*/\
    "paddw             %%mm5, %%mm4     \n\t" /* uvbuf0[eax+2048]uvalpha1 - uvbuf1[eax+2048](1-uvalpha1)*/\
    "movq  (%0, "#index", 2), %%mm0     \n\t" /*buf0[eax]*/\
    "movq  (%1, "#index", 2), %%mm1     \n\t" /*buf1[eax]*/\
    "movq 8(%0, "#index", 2), %%mm6     \n\t" /*buf0[eax]*/\
    "movq 8(%1, "#index", 2), %%mm7     \n\t" /*buf1[eax]*/\
    "psubw             %%mm1, %%mm0     \n\t" /* buf0[eax] - buf1[eax]*/\
    "psubw             %%mm7, %%mm6     \n\t" /* buf0[eax] - buf1[eax]*/\
    "pmulhw "LUM_MMX_FILTER_OFFSET"+8("#c"), %%mm0  \n\t" /* (buf0[eax] - buf1[eax])yalpha1>>16*/\
    "pmulhw "LUM_MMX_FILTER_OFFSET"+8("#c"), %%mm6  \n\t" /* (buf0[eax] - buf1[eax])yalpha1>>16*/\
    "psraw                $7, %%mm1     \n\t" /* buf0[eax] - buf1[eax] >>4*/\
    "psraw                $7, %%mm7     \n\t" /* buf0[eax] - buf1[eax] >>4*/\
    "paddw             %%mm0, %%mm1     \n\t" /* buf0[eax]yalpha1 + buf1[eax](1-yalpha1) >>16*/\
    "paddw             %%mm6, %%mm7     \n\t" /* buf0[eax]yalpha1 + buf1[eax](1-yalpha1) >>16*/\

#define YSCALEYUV2PACKED(index, c)  REAL_YSCALEYUV2PACKED(index, c)

#define REAL_YSCALEYUV2RGB_UV(index, c) \
    "xor            "#index", "#index"  \n\t"\
    ASMALIGN(4)\
    "1:                                 \n\t"\
    "movq     (%2, "#index"), %%mm2     \n\t" /* uvbuf0[eax]*/\
    "movq     (%3, "#index"), %%mm3     \n\t" /* uvbuf1[eax]*/\
    "movq "AV_STRINGIFY(VOF)"(%2, "#index"), %%mm5     \n\t" /* uvbuf0[eax+2048]*/\
    "movq "AV_STRINGIFY(VOF)"(%3, "#index"), %%mm4     \n\t" /* uvbuf1[eax+2048]*/\
    "psubw             %%mm3, %%mm2     \n\t" /* uvbuf0[eax] - uvbuf1[eax]*/\
    "psubw             %%mm4, %%mm5     \n\t" /* uvbuf0[eax+2048] - uvbuf1[eax+2048]*/\
    "movq "CHR_MMX_FILTER_OFFSET"+8("#c"), %%mm0    \n\t"\
    "pmulhw            %%mm0, %%mm2     \n\t" /* (uvbuf0[eax] - uvbuf1[eax])uvalpha1>>16*/\
    "pmulhw            %%mm0, %%mm5     \n\t" /* (uvbuf0[eax+2048] - uvbuf1[eax+2048])uvalpha1>>16*/\
    "psraw                $4, %%mm3     \n\t" /* uvbuf0[eax] - uvbuf1[eax] >>4*/\
    "psraw                $4, %%mm4     \n\t" /* uvbuf0[eax+2048] - uvbuf1[eax+2048] >>4*/\
    "paddw             %%mm2, %%mm3     \n\t" /* uvbuf0[eax]uvalpha1 - uvbuf1[eax](1-uvalpha1)*/\
    "paddw             %%mm5, %%mm4     \n\t" /* uvbuf0[eax+2048]uvalpha1 - uvbuf1[eax+2048](1-uvalpha1)*/\
    "psubw  "U_OFFSET"("#c"), %%mm3     \n\t" /* (U-128)8*/\
    "psubw  "V_OFFSET"("#c"), %%mm4     \n\t" /* (V-128)8*/\
    "movq              %%mm3, %%mm2     \n\t" /* (U-128)8*/\
    "movq              %%mm4, %%mm5     \n\t" /* (V-128)8*/\
    "pmulhw "UG_COEFF"("#c"), %%mm3     \n\t"\
    "pmulhw "VG_COEFF"("#c"), %%mm4     \n\t"\
    /* mm2=(U-128)8, mm3=ug, mm4=vg mm5=(V-128)8 */\

#define REAL_YSCALEYUV2RGB_YA(index, c, b1, b2) \
    "movq  ("#b1", "#index", 2), %%mm0     \n\t" /*buf0[eax]*/\
    "movq  ("#b2", "#index", 2), %%mm1     \n\t" /*buf1[eax]*/\
    "movq 8("#b1", "#index", 2), %%mm6     \n\t" /*buf0[eax]*/\
    "movq 8("#b2", "#index", 2), %%mm7     \n\t" /*buf1[eax]*/\
    "psubw             %%mm1, %%mm0     \n\t" /* buf0[eax] - buf1[eax]*/\
    "psubw             %%mm7, %%mm6     \n\t" /* buf0[eax] - buf1[eax]*/\
    "pmulhw "LUM_MMX_FILTER_OFFSET"+8("#c"), %%mm0  \n\t" /* (buf0[eax] - buf1[eax])yalpha1>>16*/\
    "pmulhw "LUM_MMX_FILTER_OFFSET"+8("#c"), %%mm6  \n\t" /* (buf0[eax] - buf1[eax])yalpha1>>16*/\
    "psraw                $4, %%mm1     \n\t" /* buf0[eax] - buf1[eax] >>4*/\
    "psraw                $4, %%mm7     \n\t" /* buf0[eax] - buf1[eax] >>4*/\
    "paddw             %%mm0, %%mm1     \n\t" /* buf0[eax]yalpha1 + buf1[eax](1-yalpha1) >>16*/\
    "paddw             %%mm6, %%mm7     \n\t" /* buf0[eax]yalpha1 + buf1[eax](1-yalpha1) >>16*/\

#define REAL_YSCALEYUV2RGB_COEFF(c) \
    "pmulhw "UB_COEFF"("#c"), %%mm2     \n\t"\
    "pmulhw "VR_COEFF"("#c"), %%mm5     \n\t"\
    "psubw  "Y_OFFSET"("#c"), %%mm1     \n\t" /* 8(Y-16)*/\
    "psubw  "Y_OFFSET"("#c"), %%mm7     \n\t" /* 8(Y-16)*/\
    "pmulhw  "Y_COEFF"("#c"), %%mm1     \n\t"\
    "pmulhw  "Y_COEFF"("#c"), %%mm7     \n\t"\
    /* mm1= Y1, mm2=ub, mm3=ug, mm4=vg mm5=vr, mm7=Y2 */\
    "paddw             %%mm3, %%mm4     \n\t"\
    "movq              %%mm2, %%mm0     \n\t"\
    "movq              %%mm5, %%mm6     \n\t"\
    "movq              %%mm4, %%mm3     \n\t"\
    "punpcklwd         %%mm2, %%mm2     \n\t"\
    "punpcklwd         %%mm5, %%mm5     \n\t"\
    "punpcklwd         %%mm4, %%mm4     \n\t"\
    "paddw             %%mm1, %%mm2     \n\t"\
    "paddw             %%mm1, %%mm5     \n\t"\
    "paddw             %%mm1, %%mm4     \n\t"\
    "punpckhwd         %%mm0, %%mm0     \n\t"\
    "punpckhwd         %%mm6, %%mm6     \n\t"\
    "punpckhwd         %%mm3, %%mm3     \n\t"\
    "paddw             %%mm7, %%mm0     \n\t"\
    "paddw             %%mm7, %%mm6     \n\t"\
    "paddw             %%mm7, %%mm3     \n\t"\
    /* mm0=B1, mm2=B2, mm3=G2, mm4=G1, mm5=R1, mm6=R2 */\
    "packuswb          %%mm0, %%mm2     \n\t"\
    "packuswb          %%mm6, %%mm5     \n\t"\
    "packuswb          %%mm3, %%mm4     \n\t"\

#define YSCALEYUV2RGB_YA(index, c, b1, b2) REAL_YSCALEYUV2RGB_YA(index, c, b1, b2)

#define YSCALEYUV2RGB(index, c) \
    REAL_YSCALEYUV2RGB_UV(index, c) \
    REAL_YSCALEYUV2RGB_YA(index, c, %0, %1) \
    REAL_YSCALEYUV2RGB_COEFF(c)

#define REAL_YSCALEYUV2PACKED1(index, c) \
    "xor            "#index", "#index"  \n\t"\
    ASMALIGN(4)\
    "1:                                 \n\t"\
    "movq     (%2, "#index"), %%mm3     \n\t" /* uvbuf0[eax]*/\
    "movq "AV_STRINGIFY(VOF)"(%2, "#index"), %%mm4     \n\t" /* uvbuf0[eax+2048]*/\
    "psraw                $7, %%mm3     \n\t" \
    "psraw                $7, %%mm4     \n\t" \
    "movq  (%0, "#index", 2), %%mm1     \n\t" /*buf0[eax]*/\
    "movq 8(%0, "#index", 2), %%mm7     \n\t" /*buf0[eax]*/\
    "psraw                $7, %%mm1     \n\t" \
    "psraw                $7, %%mm7     \n\t" \

#define YSCALEYUV2PACKED1(index, c)  REAL_YSCALEYUV2PACKED1(index, c)

#define REAL_YSCALEYUV2RGB1(index, c) \
    "xor            "#index", "#index"  \n\t"\
    ASMALIGN(4)\
    "1:                                 \n\t"\
    "movq     (%2, "#index"), %%mm3     \n\t" /* uvbuf0[eax]*/\
    "movq "AV_STRINGIFY(VOF)"(%2, "#index"), %%mm4     \n\t" /* uvbuf0[eax+2048]*/\
    "psraw                $4, %%mm3     \n\t" /* uvbuf0[eax] - uvbuf1[eax] >>4*/\
    "psraw                $4, %%mm4     \n\t" /* uvbuf0[eax+2048] - uvbuf1[eax+2048] >>4*/\
    "psubw  "U_OFFSET"("#c"), %%mm3     \n\t" /* (U-128)8*/\
    "psubw  "V_OFFSET"("#c"), %%mm4     \n\t" /* (V-128)8*/\
    "movq              %%mm3, %%mm2     \n\t" /* (U-128)8*/\
    "movq              %%mm4, %%mm5     \n\t" /* (V-128)8*/\
    "pmulhw "UG_COEFF"("#c"), %%mm3     \n\t"\
    "pmulhw "VG_COEFF"("#c"), %%mm4     \n\t"\
    /* mm2=(U-128)8, mm3=ug, mm4=vg mm5=(V-128)8 */\
    "movq  (%0, "#index", 2), %%mm1     \n\t" /*buf0[eax]*/\
    "movq 8(%0, "#index", 2), %%mm7     \n\t" /*buf0[eax]*/\
    "psraw                $4, %%mm1     \n\t" /* buf0[eax] - buf1[eax] >>4*/\
    "psraw                $4, %%mm7     \n\t" /* buf0[eax] - buf1[eax] >>4*/\
    "pmulhw "UB_COEFF"("#c"), %%mm2     \n\t"\
    "pmulhw "VR_COEFF"("#c"), %%mm5     \n\t"\
    "psubw  "Y_OFFSET"("#c"), %%mm1     \n\t" /* 8(Y-16)*/\
    "psubw  "Y_OFFSET"("#c"), %%mm7     \n\t" /* 8(Y-16)*/\
    "pmulhw  "Y_COEFF"("#c"), %%mm1     \n\t"\
    "pmulhw  "Y_COEFF"("#c"), %%mm7     \n\t"\
    /* mm1= Y1, mm2=ub, mm3=ug, mm4=vg mm5=vr, mm7=Y2 */\
    "paddw             %%mm3, %%mm4     \n\t"\
    "movq              %%mm2, %%mm0     \n\t"\
    "movq              %%mm5, %%mm6     \n\t"\
    "movq              %%mm4, %%mm3     \n\t"\
    "punpcklwd         %%mm2, %%mm2     \n\t"\
    "punpcklwd         %%mm5, %%mm5     \n\t"\
    "punpcklwd         %%mm4, %%mm4     \n\t"\
    "paddw             %%mm1, %%mm2     \n\t"\
    "paddw             %%mm1, %%mm5     \n\t"\
    "paddw             %%mm1, %%mm4     \n\t"\
    "punpckhwd         %%mm0, %%mm0     \n\t"\
    "punpckhwd         %%mm6, %%mm6     \n\t"\
    "punpckhwd         %%mm3, %%mm3     \n\t"\
    "paddw             %%mm7, %%mm0     \n\t"\
    "paddw             %%mm7, %%mm6     \n\t"\
    "paddw             %%mm7, %%mm3     \n\t"\
    /* mm0=B1, mm2=B2, mm3=G2, mm4=G1, mm5=R1, mm6=R2 */\
    "packuswb          %%mm0, %%mm2     \n\t"\
    "packuswb          %%mm6, %%mm5     \n\t"\
    "packuswb          %%mm3, %%mm4     \n\t"\

#define YSCALEYUV2RGB1(index, c)  REAL_YSCALEYUV2RGB1(index, c)

#define REAL_YSCALEYUV2PACKED1b(index, c) \
    "xor "#index", "#index"             \n\t"\
    ASMALIGN(4)\
    "1:                                 \n\t"\
    "movq     (%2, "#index"), %%mm2     \n\t" /* uvbuf0[eax]*/\
    "movq     (%3, "#index"), %%mm3     \n\t" /* uvbuf1[eax]*/\
    "movq "AV_STRINGIFY(VOF)"(%2, "#index"), %%mm5     \n\t" /* uvbuf0[eax+2048]*/\
    "movq "AV_STRINGIFY(VOF)"(%3, "#index"), %%mm4     \n\t" /* uvbuf1[eax+2048]*/\
    "paddw             %%mm2, %%mm3     \n\t" /* uvbuf0[eax] + uvbuf1[eax]*/\
    "paddw             %%mm5, %%mm4     \n\t" /* uvbuf0[eax+2048] + uvbuf1[eax+2048]*/\
    "psrlw                $8, %%mm3     \n\t" \
    "psrlw                $8, %%mm4     \n\t" \
    "movq  (%0, "#index", 2), %%mm1     \n\t" /*buf0[eax]*/\
    "movq 8(%0, "#index", 2), %%mm7     \n\t" /*buf0[eax]*/\
    "psraw                $7, %%mm1     \n\t" \
    "psraw                $7, %%mm7     \n\t"
#define YSCALEYUV2PACKED1b(index, c)  REAL_YSCALEYUV2PACKED1b(index, c)

// do vertical chrominance interpolation
#define REAL_YSCALEYUV2RGB1b(index, c) \
    "xor            "#index", "#index"  \n\t"\
    ASMALIGN(4)\
    "1:                                 \n\t"\
    "movq     (%2, "#index"), %%mm2     \n\t" /* uvbuf0[eax]*/\
    "movq     (%3, "#index"), %%mm3     \n\t" /* uvbuf1[eax]*/\
    "movq "AV_STRINGIFY(VOF)"(%2, "#index"), %%mm5     \n\t" /* uvbuf0[eax+2048]*/\
    "movq "AV_STRINGIFY(VOF)"(%3, "#index"), %%mm4     \n\t" /* uvbuf1[eax+2048]*/\
    "paddw             %%mm2, %%mm3     \n\t" /* uvbuf0[eax] + uvbuf1[eax]*/\
    "paddw             %%mm5, %%mm4     \n\t" /* uvbuf0[eax+2048] + uvbuf1[eax+2048]*/\
    "psrlw                $5, %%mm3     \n\t" /*FIXME might overflow*/\
    "psrlw                $5, %%mm4     \n\t" /*FIXME might overflow*/\
    "psubw  "U_OFFSET"("#c"), %%mm3     \n\t" /* (U-128)8*/\
    "psubw  "V_OFFSET"("#c"), %%mm4     \n\t" /* (V-128)8*/\
    "movq              %%mm3, %%mm2     \n\t" /* (U-128)8*/\
    "movq              %%mm4, %%mm5     \n\t" /* (V-128)8*/\
    "pmulhw "UG_COEFF"("#c"), %%mm3     \n\t"\
    "pmulhw "VG_COEFF"("#c"), %%mm4     \n\t"\
    /* mm2=(U-128)8, mm3=ug, mm4=vg mm5=(V-128)8 */\
    "movq  (%0, "#index", 2), %%mm1     \n\t" /*buf0[eax]*/\
    "movq 8(%0, "#index", 2), %%mm7     \n\t" /*buf0[eax]*/\
    "psraw                $4, %%mm1     \n\t" /* buf0[eax] - buf1[eax] >>4*/\
    "psraw                $4, %%mm7     \n\t" /* buf0[eax] - buf1[eax] >>4*/\
    "pmulhw "UB_COEFF"("#c"), %%mm2     \n\t"\
    "pmulhw "VR_COEFF"("#c"), %%mm5     \n\t"\
    "psubw  "Y_OFFSET"("#c"), %%mm1     \n\t" /* 8(Y-16)*/\
    "psubw  "Y_OFFSET"("#c"), %%mm7     \n\t" /* 8(Y-16)*/\
    "pmulhw  "Y_COEFF"("#c"), %%mm1     \n\t"\
    "pmulhw  "Y_COEFF"("#c"), %%mm7     \n\t"\
    /* mm1= Y1, mm2=ub, mm3=ug, mm4=vg mm5=vr, mm7=Y2 */\
    "paddw             %%mm3, %%mm4     \n\t"\
    "movq              %%mm2, %%mm0     \n\t"\
    "movq              %%mm5, %%mm6     \n\t"\
    "movq              %%mm4, %%mm3     \n\t"\
    "punpcklwd         %%mm2, %%mm2     \n\t"\
    "punpcklwd         %%mm5, %%mm5     \n\t"\
    "punpcklwd         %%mm4, %%mm4     \n\t"\
    "paddw             %%mm1, %%mm2     \n\t"\
    "paddw             %%mm1, %%mm5     \n\t"\
    "paddw             %%mm1, %%mm4     \n\t"\
    "punpckhwd         %%mm0, %%mm0     \n\t"\
    "punpckhwd         %%mm6, %%mm6     \n\t"\
    "punpckhwd         %%mm3, %%mm3     \n\t"\
    "paddw             %%mm7, %%mm0     \n\t"\
    "paddw             %%mm7, %%mm6     \n\t"\
    "paddw             %%mm7, %%mm3     \n\t"\
    /* mm0=B1, mm2=B2, mm3=G2, mm4=G1, mm5=R1, mm6=R2 */\
    "packuswb          %%mm0, %%mm2     \n\t"\
    "packuswb          %%mm6, %%mm5     \n\t"\
    "packuswb          %%mm3, %%mm4     \n\t"\

#define YSCALEYUV2RGB1b(index, c)  REAL_YSCALEYUV2RGB1b(index, c)

#define REAL_YSCALEYUV2RGB1_ALPHA(index) \
    "movq  (%1, "#index", 2), %%mm7     \n\t" /* abuf0[index  ]     */\
    "movq 8(%1, "#index", 2), %%mm1     \n\t" /* abuf0[index+4]     */\
    "psraw                $7, %%mm7     \n\t" /* abuf0[index  ] >>7 */\
    "psraw                $7, %%mm1     \n\t" /* abuf0[index+4] >>7 */\
    "packuswb          %%mm1, %%mm7     \n\t"
#define YSCALEYUV2RGB1_ALPHA(index) REAL_YSCALEYUV2RGB1_ALPHA(index)

#define REAL_WRITEBGR32(dst, dstw, index, b, g, r, a, q0, q2, q3, t) \
    "movq       "#b", "#q2"     \n\t" /* B */\
    "movq       "#r", "#t"      \n\t" /* R */\
    "punpcklbw  "#g", "#b"      \n\t" /* GBGBGBGB 0 */\
    "punpcklbw  "#a", "#r"      \n\t" /* ARARARAR 0 */\
    "punpckhbw  "#g", "#q2"     \n\t" /* GBGBGBGB 2 */\
    "punpckhbw  "#a", "#t"      \n\t" /* ARARARAR 2 */\
    "movq       "#b", "#q0"     \n\t" /* GBGBGBGB 0 */\
    "movq      "#q2", "#q3"     \n\t" /* GBGBGBGB 2 */\
    "punpcklwd  "#r", "#q0"     \n\t" /* ARGBARGB 0 */\
    "punpckhwd  "#r", "#b"      \n\t" /* ARGBARGB 1 */\
    "punpcklwd  "#t", "#q2"     \n\t" /* ARGBARGB 2 */\
    "punpckhwd  "#t", "#q3"     \n\t" /* ARGBARGB 3 */\
\
    MOVNTQ(   q0,   (dst, index, 4))\
    MOVNTQ(    b,  8(dst, index, 4))\
    MOVNTQ(   q2, 16(dst, index, 4))\
    MOVNTQ(   q3, 24(dst, index, 4))\
\
    "add      $8, "#index"      \n\t"\
    "cmp "#dstw", "#index"      \n\t"\
    " jb      1b                \n\t"
#define WRITEBGR32(dst, dstw, index, b, g, r, a, q0, q2, q3, t)  REAL_WRITEBGR32(dst, dstw, index, b, g, r, a, q0, q2, q3, t)

#define REAL_WRITERGB16(dst, dstw, index) \
    "pand "MANGLE(bF8)", %%mm2  \n\t" /* B */\
    "pand "MANGLE(bFC)", %%mm4  \n\t" /* G */\
    "pand "MANGLE(bF8)", %%mm5  \n\t" /* R */\
    "psrlq           $3, %%mm2  \n\t"\
\
    "movq         %%mm2, %%mm1  \n\t"\
    "movq         %%mm4, %%mm3  \n\t"\
\
    "punpcklbw    %%mm7, %%mm3  \n\t"\
    "punpcklbw    %%mm5, %%mm2  \n\t"\
    "punpckhbw    %%mm7, %%mm4  \n\t"\
    "punpckhbw    %%mm5, %%mm1  \n\t"\
\
    "psllq           $3, %%mm3  \n\t"\
    "psllq           $3, %%mm4  \n\t"\
\
    "por          %%mm3, %%mm2  \n\t"\
    "por          %%mm4, %%mm1  \n\t"\
\
    MOVNTQ(%%mm2,  (dst, index, 2))\
    MOVNTQ(%%mm1, 8(dst, index, 2))\
\
    "add             $8, "#index"   \n\t"\
    "cmp        "#dstw", "#index"   \n\t"\
    " jb             1b             \n\t"
#define WRITERGB16(dst, dstw, index)  REAL_WRITERGB16(dst, dstw, index)

#define REAL_WRITERGB15(dst, dstw, index) \
    "pand "MANGLE(bF8)", %%mm2  \n\t" /* B */\
    "pand "MANGLE(bF8)", %%mm4  \n\t" /* G */\
    "pand "MANGLE(bF8)", %%mm5  \n\t" /* R */\
    "psrlq           $3, %%mm2  \n\t"\
    "psrlq           $1, %%mm5  \n\t"\
\
    "movq         %%mm2, %%mm1  \n\t"\
    "movq         %%mm4, %%mm3  \n\t"\
\
    "punpcklbw    %%mm7, %%mm3  \n\t"\
    "punpcklbw    %%mm5, %%mm2  \n\t"\
    "punpckhbw    %%mm7, %%mm4  \n\t"\
    "punpckhbw    %%mm5, %%mm1  \n\t"\
\
    "psllq           $2, %%mm3  \n\t"\
    "psllq           $2, %%mm4  \n\t"\
\
    "por          %%mm3, %%mm2  \n\t"\
    "por          %%mm4, %%mm1  \n\t"\
\
    MOVNTQ(%%mm2,  (dst, index, 2))\
    MOVNTQ(%%mm1, 8(dst, index, 2))\
\
    "add             $8, "#index"   \n\t"\
    "cmp        "#dstw", "#index"   \n\t"\
    " jb             1b             \n\t"
#define WRITERGB15(dst, dstw, index)  REAL_WRITERGB15(dst, dstw, index)

#define WRITEBGR24OLD(dst, dstw, index) \
    /* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */\
    "movq      %%mm2, %%mm1             \n\t" /* B */\
    "movq      %%mm5, %%mm6             \n\t" /* R */\
    "punpcklbw %%mm4, %%mm2             \n\t" /* GBGBGBGB 0 */\
    "punpcklbw %%mm7, %%mm5             \n\t" /* 0R0R0R0R 0 */\
    "punpckhbw %%mm4, %%mm1             \n\t" /* GBGBGBGB 2 */\
    "punpckhbw %%mm7, %%mm6             \n\t" /* 0R0R0R0R 2 */\
    "movq      %%mm2, %%mm0             \n\t" /* GBGBGBGB 0 */\
    "movq      %%mm1, %%mm3             \n\t" /* GBGBGBGB 2 */\
    "punpcklwd %%mm5, %%mm0             \n\t" /* 0RGB0RGB 0 */\
    "punpckhwd %%mm5, %%mm2             \n\t" /* 0RGB0RGB 1 */\
    "punpcklwd %%mm6, %%mm1             \n\t" /* 0RGB0RGB 2 */\
    "punpckhwd %%mm6, %%mm3             \n\t" /* 0RGB0RGB 3 */\
\
    "movq      %%mm0, %%mm4             \n\t" /* 0RGB0RGB 0 */\
    "psrlq        $8, %%mm0             \n\t" /* 00RGB0RG 0 */\
    "pand "MANGLE(bm00000111)", %%mm4   \n\t" /* 00000RGB 0 */\
    "pand "MANGLE(bm11111000)", %%mm0   \n\t" /* 00RGB000 0.5 */\
    "por       %%mm4, %%mm0             \n\t" /* 00RGBRGB 0 */\
    "movq      %%mm2, %%mm4             \n\t" /* 0RGB0RGB 1 */\
    "psllq       $48, %%mm2             \n\t" /* GB000000 1 */\
    "por       %%mm2, %%mm0             \n\t" /* GBRGBRGB 0 */\
\
    "movq      %%mm4, %%mm2             \n\t" /* 0RGB0RGB 1 */\
    "psrld       $16, %%mm4             \n\t" /* 000R000R 1 */\
    "psrlq       $24, %%mm2             \n\t" /* 0000RGB0 1.5 */\
    "por       %%mm4, %%mm2             \n\t" /* 000RRGBR 1 */\
    "pand "MANGLE(bm00001111)", %%mm2   \n\t" /* 0000RGBR 1 */\
    "movq      %%mm1, %%mm4             \n\t" /* 0RGB0RGB 2 */\
    "psrlq        $8, %%mm1             \n\t" /* 00RGB0RG 2 */\
    "pand "MANGLE(bm00000111)", %%mm4   \n\t" /* 00000RGB 2 */\
    "pand "MANGLE(bm11111000)", %%mm1   \n\t" /* 00RGB000 2.5 */\
    "por       %%mm4, %%mm1             \n\t" /* 00RGBRGB 2 */\
    "movq      %%mm1, %%mm4             \n\t" /* 00RGBRGB 2 */\
    "psllq       $32, %%mm1             \n\t" /* BRGB0000 2 */\
    "por       %%mm1, %%mm2             \n\t" /* BRGBRGBR 1 */\
\
    "psrlq       $32, %%mm4             \n\t" /* 000000RG 2.5 */\
    "movq      %%mm3, %%mm5             \n\t" /* 0RGB0RGB 3 */\
    "psrlq        $8, %%mm3             \n\t" /* 00RGB0RG 3 */\
    "pand "MANGLE(bm00000111)", %%mm5   \n\t" /* 00000RGB 3 */\
    "pand "MANGLE(bm11111000)", %%mm3   \n\t" /* 00RGB000 3.5 */\
    "por       %%mm5, %%mm3             \n\t" /* 00RGBRGB 3 */\
    "psllq       $16, %%mm3             \n\t" /* RGBRGB00 3 */\
    "por       %%mm4, %%mm3             \n\t" /* RGBRGBRG 2.5 */\
\
    MOVNTQ(%%mm0,   (dst))\
    MOVNTQ(%%mm2,  8(dst))\
    MOVNTQ(%%mm3, 16(dst))\
    "add         $24, "#dst"            \n\t"\
\
    "add          $8, "#index"          \n\t"\
    "cmp     "#dstw", "#index"          \n\t"\
    " jb          1b                    \n\t"

#define WRITEBGR24MMX(dst, dstw, index) \
    /* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */\
    "movq      %%mm2, %%mm1     \n\t" /* B */\
    "movq      %%mm5, %%mm6     \n\t" /* R */\
    "punpcklbw %%mm4, %%mm2     \n\t" /* GBGBGBGB 0 */\
    "punpcklbw %%mm7, %%mm5     \n\t" /* 0R0R0R0R 0 */\
    "punpckhbw %%mm4, %%mm1     \n\t" /* GBGBGBGB 2 */\
    "punpckhbw %%mm7, %%mm6     \n\t" /* 0R0R0R0R 2 */\
    "movq      %%mm2, %%mm0     \n\t" /* GBGBGBGB 0 */\
    "movq      %%mm1, %%mm3     \n\t" /* GBGBGBGB 2 */\
    "punpcklwd %%mm5, %%mm0     \n\t" /* 0RGB0RGB 0 */\
    "punpckhwd %%mm5, %%mm2     \n\t" /* 0RGB0RGB 1 */\
    "punpcklwd %%mm6, %%mm1     \n\t" /* 0RGB0RGB 2 */\
    "punpckhwd %%mm6, %%mm3     \n\t" /* 0RGB0RGB 3 */\
\
    "movq      %%mm0, %%mm4     \n\t" /* 0RGB0RGB 0 */\
    "movq      %%mm2, %%mm6     \n\t" /* 0RGB0RGB 1 */\
    "movq      %%mm1, %%mm5     \n\t" /* 0RGB0RGB 2 */\
    "movq      %%mm3, %%mm7     \n\t" /* 0RGB0RGB 3 */\
\
    "psllq       $40, %%mm0     \n\t" /* RGB00000 0 */\
    "psllq       $40, %%mm2     \n\t" /* RGB00000 1 */\
    "psllq       $40, %%mm1     \n\t" /* RGB00000 2 */\
    "psllq       $40, %%mm3     \n\t" /* RGB00000 3 */\
\
    "punpckhdq %%mm4, %%mm0     \n\t" /* 0RGBRGB0 0 */\
    "punpckhdq %%mm6, %%mm2     \n\t" /* 0RGBRGB0 1 */\
    "punpckhdq %%mm5, %%mm1     \n\t" /* 0RGBRGB0 2 */\
    "punpckhdq %%mm7, %%mm3     \n\t" /* 0RGBRGB0 3 */\
\
    "psrlq        $8, %%mm0     \n\t" /* 00RGBRGB 0 */\
    "movq      %%mm2, %%mm6     \n\t" /* 0RGBRGB0 1 */\
    "psllq       $40, %%mm2     \n\t" /* GB000000 1 */\
    "por       %%mm2, %%mm0     \n\t" /* GBRGBRGB 0 */\
    MOVNTQ(%%mm0, (dst))\
\
    "psrlq       $24, %%mm6     \n\t" /* 0000RGBR 1 */\
    "movq      %%mm1, %%mm5     \n\t" /* 0RGBRGB0 2 */\
    "psllq       $24, %%mm1     \n\t" /* BRGB0000 2 */\
    "por       %%mm1, %%mm6     \n\t" /* BRGBRGBR 1 */\
    MOVNTQ(%%mm6, 8(dst))\
\
    "psrlq       $40, %%mm5     \n\t" /* 000000RG 2 */\
    "psllq        $8, %%mm3     \n\t" /* RGBRGB00 3 */\
    "por       %%mm3, %%mm5     \n\t" /* RGBRGBRG 2 */\
    MOVNTQ(%%mm5, 16(dst))\
\
    "add         $24, "#dst"    \n\t"\
\
    "add          $8, "#index"  \n\t"\
    "cmp     "#dstw", "#index"  \n\t"\
    " jb          1b            \n\t"

#define WRITEBGR24MMX2(dst, dstw, index) \
    /* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */\
    "movq "MANGLE(ff_M24A)", %%mm0 \n\t"\
    "movq "MANGLE(ff_M24C)", %%mm7 \n\t"\
    "pshufw $0x50, %%mm2, %%mm1 \n\t" /* B3 B2 B3 B2  B1 B0 B1 B0 */\
    "pshufw $0x50, %%mm4, %%mm3 \n\t" /* G3 G2 G3 G2  G1 G0 G1 G0 */\
    "pshufw $0x00, %%mm5, %%mm6 \n\t" /* R1 R0 R1 R0  R1 R0 R1 R0 */\
\
    "pand   %%mm0, %%mm1        \n\t" /*    B2        B1       B0 */\
    "pand   %%mm0, %%mm3        \n\t" /*    G2        G1       G0 */\
    "pand   %%mm7, %%mm6        \n\t" /*       R1        R0       */\
\
    "psllq     $8, %%mm3        \n\t" /* G2        G1       G0    */\
    "por    %%mm1, %%mm6        \n\t"\
    "por    %%mm3, %%mm6        \n\t"\
    MOVNTQ(%%mm6, (dst))\
\
    "psrlq     $8, %%mm4        \n\t" /* 00 G7 G6 G5  G4 G3 G2 G1 */\
    "pshufw $0xA5, %%mm2, %%mm1 \n\t" /* B5 B4 B5 B4  B3 B2 B3 B2 */\
    "pshufw $0x55, %%mm4, %%mm3 \n\t" /* G4 G3 G4 G3  G4 G3 G4 G3 */\
    "pshufw $0xA5, %%mm5, %%mm6 \n\t" /* R5 R4 R5 R4  R3 R2 R3 R2 */\
\
    "pand "MANGLE(ff_M24B)", %%mm1 \n\t" /* B5       B4        B3    */\
    "pand   %%mm7, %%mm3        \n\t" /*       G4        G3       */\
    "pand   %%mm0, %%mm6        \n\t" /*    R4        R3       R2 */\
\
    "por    %%mm1, %%mm3        \n\t" /* B5    G4 B4     G3 B3    */\
    "por    %%mm3, %%mm6        \n\t"\
    MOVNTQ(%%mm6, 8(dst))\
\
    "pshufw $0xFF, %%mm2, %%mm1 \n\t" /* B7 B6 B7 B6  B7 B6 B6 B7 */\
    "pshufw $0xFA, %%mm4, %%mm3 \n\t" /* 00 G7 00 G7  G6 G5 G6 G5 */\
    "pshufw $0xFA, %%mm5, %%mm6 \n\t" /* R7 R6 R7 R6  R5 R4 R5 R4 */\
\
    "pand   %%mm7, %%mm1        \n\t" /*       B7        B6       */\
    "pand   %%mm0, %%mm3        \n\t" /*    G7        G6       G5 */\
    "pand "MANGLE(ff_M24B)", %%mm6 \n\t" /* R7       R6        R5    */\
\
    "por    %%mm1, %%mm3        \n\t"\
    "por    %%mm3, %%mm6        \n\t"\
    MOVNTQ(%%mm6, 16(dst))\
\
    "add      $24, "#dst"       \n\t"\
\
    "add       $8, "#index"     \n\t"\
    "cmp  "#dstw", "#index"     \n\t"\
    " jb       1b               \n\t"

#if COMPILE_TEMPLATE_MMX2
#undef WRITEBGR24
#define WRITEBGR24(dst, dstw, index)  WRITEBGR24MMX2(dst, dstw, index)
#else
#undef WRITEBGR24
#define WRITEBGR24(dst, dstw, index)  WRITEBGR24MMX(dst, dstw, index)
#endif

#define REAL_WRITEYUY2(dst, dstw, index) \
    "packuswb  %%mm3, %%mm3     \n\t"\
    "packuswb  %%mm4, %%mm4     \n\t"\
    "packuswb  %%mm7, %%mm1     \n\t"\
    "punpcklbw %%mm4, %%mm3     \n\t"\
    "movq      %%mm1, %%mm7     \n\t"\
    "punpcklbw %%mm3, %%mm1     \n\t"\
    "punpckhbw %%mm3, %%mm7     \n\t"\
\
    MOVNTQ(%%mm1, (dst, index, 2))\
    MOVNTQ(%%mm7, 8(dst, index, 2))\
\
    "add          $8, "#index"  \n\t"\
    "cmp     "#dstw", "#index"  \n\t"\
    " jb          1b            \n\t"
#define WRITEYUY2(dst, dstw, index)  REAL_WRITEYUY2(dst, dstw, index)


static inline void RENAME(yuv2yuvX)(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
                                    const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize, const int16_t **alpSrc,
                                    uint8_t *dest, uint8_t *uDest, uint8_t *vDest, uint8_t *aDest, long dstW, long chrDstW)
{
#if COMPILE_TEMPLATE_MMX
    if(!(c->flags & SWS_BITEXACT)) {
        if (c->flags & SWS_ACCURATE_RND) {
            if (uDest) {
                YSCALEYUV2YV12X_ACCURATE(   "0", CHR_MMX_FILTER_OFFSET, uDest, chrDstW)
                YSCALEYUV2YV12X_ACCURATE(AV_STRINGIFY(VOF), CHR_MMX_FILTER_OFFSET, vDest, chrDstW)
            }
            if (CONFIG_SWSCALE_ALPHA && aDest) {
                YSCALEYUV2YV12X_ACCURATE(   "0", ALP_MMX_FILTER_OFFSET, aDest, dstW)
            }

            YSCALEYUV2YV12X_ACCURATE("0", LUM_MMX_FILTER_OFFSET, dest, dstW)
        } else {
            if (uDest) {
                YSCALEYUV2YV12X(   "0", CHR_MMX_FILTER_OFFSET, uDest, chrDstW)
                YSCALEYUV2YV12X(AV_STRINGIFY(VOF), CHR_MMX_FILTER_OFFSET, vDest, chrDstW)
            }
            if (CONFIG_SWSCALE_ALPHA && aDest) {
                YSCALEYUV2YV12X(   "0", ALP_MMX_FILTER_OFFSET, aDest, dstW)
            }

            YSCALEYUV2YV12X("0", LUM_MMX_FILTER_OFFSET, dest, dstW)
        }
        return;
    }
#endif
#if COMPILE_TEMPLATE_ALTIVEC
    yuv2yuvX_altivec_real(lumFilter, lumSrc, lumFilterSize,
                          chrFilter, chrSrc, chrFilterSize,
                          dest, uDest, vDest, dstW, chrDstW);
#else //COMPILE_TEMPLATE_ALTIVEC
    yuv2yuvXinC(lumFilter, lumSrc, lumFilterSize,
                chrFilter, chrSrc, chrFilterSize,
                alpSrc, dest, uDest, vDest, aDest, dstW, chrDstW);
#endif //!COMPILE_TEMPLATE_ALTIVEC
}

static inline void RENAME(yuv2nv12X)(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
                                     const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
                                     uint8_t *dest, uint8_t *uDest, int dstW, int chrDstW, enum PixelFormat dstFormat)
{
    yuv2nv12XinC(lumFilter, lumSrc, lumFilterSize,
                 chrFilter, chrSrc, chrFilterSize,
                 dest, uDest, dstW, chrDstW, dstFormat);
}

static inline void RENAME(yuv2yuv1)(SwsContext *c, const int16_t *lumSrc, const int16_t *chrSrc, const int16_t *alpSrc,
                                    uint8_t *dest, uint8_t *uDest, uint8_t *vDest, uint8_t *aDest, long dstW, long chrDstW)
{
    int i;
#if COMPILE_TEMPLATE_MMX
    if(!(c->flags & SWS_BITEXACT)) {
        long p= 4;
        const uint8_t *src[4]= {alpSrc + dstW, lumSrc + dstW, chrSrc + chrDstW, chrSrc + VOFW + chrDstW};
        uint8_t *dst[4]= {aDest, dest, uDest, vDest};
        x86_reg counter[4]= {dstW, dstW, chrDstW, chrDstW};

        if (c->flags & SWS_ACCURATE_RND) {
            while(p--) {
                if (dst[p]) {
                    __asm__ volatile(
                        YSCALEYUV2YV121_ACCURATE
                        :: "r" (src[p]), "r" (dst[p] + counter[p]),
                        "g" (-counter[p])
                        : "%"REG_a
                    );
                }
            }
        } else {
            while(p--) {
                if (dst[p]) {
                    __asm__ volatile(
                        YSCALEYUV2YV121
                        :: "r" (src[p]), "r" (dst[p] + counter[p]),
                        "g" (-counter[p])
                        : "%"REG_a
                    );
                }
            }
        }
        return;
    }
#endif
    for (i=0; i<dstW; i++) {
        int val= (lumSrc[i]+64)>>7;

        if (val&256) {
            if (val<0) val=0;
            else       val=255;
        }

        dest[i]= val;
    }

    if (uDest)
        for (i=0; i<chrDstW; i++) {
            int u=(chrSrc[i       ]+64)>>7;
            int v=(chrSrc[i + VOFW]+64)>>7;

            if ((u|v)&256) {
                if (u<0)        u=0;
                else if (u>255) u=255;
                if (v<0)        v=0;
                else if (v>255) v=255;
            }

            uDest[i]= u;
            vDest[i]= v;
        }

    if (CONFIG_SWSCALE_ALPHA && aDest)
        for (i=0; i<dstW; i++) {
            int val= (alpSrc[i]+64)>>7;
            aDest[i]= av_clip_uint8(val);
        }
}


/**
 * vertical scale YV12 to RGB
 */
static inline void RENAME(yuv2packedX)(SwsContext *c, const int16_t *lumFilter, const int16_t **lumSrc, int lumFilterSize,
                                       const int16_t *chrFilter, const int16_t **chrSrc, int chrFilterSize,
                                       const int16_t **alpSrc, uint8_t *dest, long dstW, long dstY)
{
#if COMPILE_TEMPLATE_MMX
    x86_reg dummy=0;
    if(!(c->flags & SWS_BITEXACT)) {
        if (c->flags & SWS_ACCURATE_RND) {
            switch(c->dstFormat) {
            case PIX_FMT_RGB32:
                if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {
                    YSCALEYUV2PACKEDX_ACCURATE
                    YSCALEYUV2RGBX
                    "movq                      %%mm2, "U_TEMP"(%0)  \n\t"
                    "movq                      %%mm4, "V_TEMP"(%0)  \n\t"
                    "movq                      %%mm5, "Y_TEMP"(%0)  \n\t"
                    YSCALEYUV2PACKEDX_ACCURATE_YA(ALP_MMX_FILTER_OFFSET)
                    "movq               "Y_TEMP"(%0), %%mm5         \n\t"
                    "psraw                        $3, %%mm1         \n\t"
                    "psraw                        $3, %%mm7         \n\t"
                    "packuswb                  %%mm7, %%mm1         \n\t"
                    WRITEBGR32(%4, %5, %%REGa, %%mm3, %%mm4, %%mm5, %%mm1, %%mm0, %%mm7, %%mm2, %%mm6)

                    YSCALEYUV2PACKEDX_END
                } else {
                    YSCALEYUV2PACKEDX_ACCURATE
                    YSCALEYUV2RGBX
                    "pcmpeqd %%mm7, %%mm7 \n\t"
                    WRITEBGR32(%4, %5, %%REGa, %%mm2, %%mm4, %%mm5, %%mm7, %%mm0, %%mm1, %%mm3, %%mm6)

                    YSCALEYUV2PACKEDX_END
                }
                return;
            case PIX_FMT_BGR24:
                YSCALEYUV2PACKEDX_ACCURATE
                YSCALEYUV2RGBX
                "pxor %%mm7, %%mm7 \n\t"
                "lea (%%"REG_a", %%"REG_a", 2), %%"REG_c"\n\t" //FIXME optimize
                "add %4, %%"REG_c"                        \n\t"
                WRITEBGR24(%%REGc, %5, %%REGa)


                :: "r" (&c->redDither),
                "m" (dummy), "m" (dummy), "m" (dummy),
                "r" (dest), "m" (dstW)
                : "%"REG_a, "%"REG_c, "%"REG_d, "%"REG_S
                );
                return;
            case PIX_FMT_RGB555:
                YSCALEYUV2PACKEDX_ACCURATE
                YSCALEYUV2RGBX
                "pxor %%mm7, %%mm7 \n\t"
                /* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
#ifdef DITHER1XBPP
                "paddusb "BLUE_DITHER"(%0), %%mm2\n\t"
                "paddusb "GREEN_DITHER"(%0), %%mm4\n\t"
                "paddusb "RED_DITHER"(%0), %%mm5\n\t"
#endif

                WRITERGB15(%4, %5, %%REGa)
                YSCALEYUV2PACKEDX_END
                return;
            case PIX_FMT_RGB565:
                YSCALEYUV2PACKEDX_ACCURATE
                YSCALEYUV2RGBX
                "pxor %%mm7, %%mm7 \n\t"
                /* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
#ifdef DITHER1XBPP
                "paddusb "BLUE_DITHER"(%0), %%mm2\n\t"
                "paddusb "GREEN_DITHER"(%0), %%mm4\n\t"
                "paddusb "RED_DITHER"(%0), %%mm5\n\t"
#endif

                WRITERGB16(%4, %5, %%REGa)
                YSCALEYUV2PACKEDX_END
                return;
            case PIX_FMT_YUYV422:
                YSCALEYUV2PACKEDX_ACCURATE
                /* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */

                "psraw $3, %%mm3    \n\t"
                "psraw $3, %%mm4    \n\t"
                "psraw $3, %%mm1    \n\t"
                "psraw $3, %%mm7    \n\t"
                WRITEYUY2(%4, %5, %%REGa)
                YSCALEYUV2PACKEDX_END
                return;
            }
        } else {
            switch(c->dstFormat) {
            case PIX_FMT_RGB32:
                if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {
                    YSCALEYUV2PACKEDX
                    YSCALEYUV2RGBX
                    YSCALEYUV2PACKEDX_YA(ALP_MMX_FILTER_OFFSET, %%mm0, %%mm3, %%mm6, %%mm1, %%mm7)
                    "psraw                        $3, %%mm1         \n\t"
                    "psraw                        $3, %%mm7         \n\t"
                    "packuswb                  %%mm7, %%mm1         \n\t"
                    WRITEBGR32(%4, %5, %%REGa, %%mm2, %%mm4, %%mm5, %%mm1, %%mm0, %%mm7, %%mm3, %%mm6)
                    YSCALEYUV2PACKEDX_END
                } else {
                    YSCALEYUV2PACKEDX
                    YSCALEYUV2RGBX
                    "pcmpeqd %%mm7, %%mm7 \n\t"
                    WRITEBGR32(%4, %5, %%REGa, %%mm2, %%mm4, %%mm5, %%mm7, %%mm0, %%mm1, %%mm3, %%mm6)
                    YSCALEYUV2PACKEDX_END
                }
                return;
            case PIX_FMT_BGR24:
                YSCALEYUV2PACKEDX
                YSCALEYUV2RGBX
                "pxor                    %%mm7, %%mm7       \n\t"
                "lea (%%"REG_a", %%"REG_a", 2), %%"REG_c"   \n\t" //FIXME optimize
                "add                        %4, %%"REG_c"   \n\t"
                WRITEBGR24(%%REGc, %5, %%REGa)

                :: "r" (&c->redDither),
                "m" (dummy), "m" (dummy), "m" (dummy),
                "r" (dest),  "m" (dstW)
                : "%"REG_a, "%"REG_c, "%"REG_d, "%"REG_S
                );
                return;
            case PIX_FMT_RGB555:
                YSCALEYUV2PACKEDX
                YSCALEYUV2RGBX
                "pxor %%mm7, %%mm7 \n\t"
                /* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
#ifdef DITHER1XBPP
                "paddusb "BLUE_DITHER"(%0), %%mm2  \n\t"
                "paddusb "GREEN_DITHER"(%0), %%mm4  \n\t"
                "paddusb "RED_DITHER"(%0), %%mm5  \n\t"
#endif

                WRITERGB15(%4, %5, %%REGa)
                YSCALEYUV2PACKEDX_END
                return;
            case PIX_FMT_RGB565:
                YSCALEYUV2PACKEDX
                YSCALEYUV2RGBX
                "pxor %%mm7, %%mm7 \n\t"
                /* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
#ifdef DITHER1XBPP
                "paddusb "BLUE_DITHER"(%0), %%mm2  \n\t"
                "paddusb "GREEN_DITHER"(%0), %%mm4  \n\t"
                "paddusb "RED_DITHER"(%0), %%mm5  \n\t"
#endif

                WRITERGB16(%4, %5, %%REGa)
                YSCALEYUV2PACKEDX_END
                return;
            case PIX_FMT_YUYV422:
                YSCALEYUV2PACKEDX
                /* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */

                "psraw $3, %%mm3    \n\t"
                "psraw $3, %%mm4    \n\t"
                "psraw $3, %%mm1    \n\t"
                "psraw $3, %%mm7    \n\t"
                WRITEYUY2(%4, %5, %%REGa)
                YSCALEYUV2PACKEDX_END
                return;
            }
        }
    }
#endif /* COMPILE_TEMPLATE_MMX */
#if COMPILE_TEMPLATE_ALTIVEC
    /* The following list of supported dstFormat values should
       match what's found in the body of ff_yuv2packedX_altivec() */
    if (!(c->flags & SWS_BITEXACT) && !c->alpPixBuf &&
         (c->dstFormat==PIX_FMT_ABGR  || c->dstFormat==PIX_FMT_BGRA  ||
          c->dstFormat==PIX_FMT_BGR24 || c->dstFormat==PIX_FMT_RGB24 ||
          c->dstFormat==PIX_FMT_RGBA  || c->dstFormat==PIX_FMT_ARGB))
            ff_yuv2packedX_altivec(c, lumFilter, lumSrc, lumFilterSize,
                                   chrFilter, chrSrc, chrFilterSize,
                                   dest, dstW, dstY);
    else
#endif
        yuv2packedXinC(c, lumFilter, lumSrc, lumFilterSize,
                       chrFilter, chrSrc, chrFilterSize,
                       alpSrc, dest, dstW, dstY);
}

/**
 * vertical bilinear scale YV12 to RGB
 */
static inline void RENAME(yuv2packed2)(SwsContext *c, const uint16_t *buf0, const uint16_t *buf1, const uint16_t *uvbuf0, const uint16_t *uvbuf1,
                          const uint16_t *abuf0, const uint16_t *abuf1, uint8_t *dest, int dstW, int yalpha, int uvalpha, int y)
{
    int  yalpha1=4095- yalpha;
    int uvalpha1=4095-uvalpha;
    int i;

#if COMPILE_TEMPLATE_MMX
    if(!(c->flags & SWS_BITEXACT)) {
        switch(c->dstFormat) {
        //Note 8280 == DSTW_OFFSET but the preprocessor can't handle that there :(
        case PIX_FMT_RGB32:
            if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {
#if ARCH_X86_64
                __asm__ volatile(
                    YSCALEYUV2RGB(%%r8, %5)
                    YSCALEYUV2RGB_YA(%%r8, %5, %6, %7)
                    "psraw                  $3, %%mm1       \n\t" /* abuf0[eax] - abuf1[eax] >>7*/
                    "psraw                  $3, %%mm7       \n\t" /* abuf0[eax] - abuf1[eax] >>7*/
                    "packuswb            %%mm7, %%mm1       \n\t"
                    WRITEBGR32(%4, 8280(%5), %%r8, %%mm2, %%mm4, %%mm5, %%mm1, %%mm0, %%mm7, %%mm3, %%mm6)

                    :: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "r" (dest),
                    "a" (&c->redDither)
                    ,"r" (abuf0), "r" (abuf1)
                    : "%r8"
                );
#else
                *(const uint16_t **)(&c->u_temp)=abuf0;
                *(const uint16_t **)(&c->v_temp)=abuf1;
                __asm__ volatile(
                    "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                    "mov        %4, %%"REG_b"               \n\t"
                    "push %%"REG_BP"                        \n\t"
                    YSCALEYUV2RGB(%%REGBP, %5)
                    "push                   %0              \n\t"
                    "push                   %1              \n\t"
                    "mov          "U_TEMP"(%5), %0          \n\t"
                    "mov          "V_TEMP"(%5), %1          \n\t"
                    YSCALEYUV2RGB_YA(%%REGBP, %5, %0, %1)
                    "psraw                  $3, %%mm1       \n\t" /* abuf0[eax] - abuf1[eax] >>7*/
                    "psraw                  $3, %%mm7       \n\t" /* abuf0[eax] - abuf1[eax] >>7*/
                    "packuswb            %%mm7, %%mm1       \n\t"
                    "pop                    %1              \n\t"
                    "pop                    %0              \n\t"
                    WRITEBGR32(%%REGb, 8280(%5), %%REGBP, %%mm2, %%mm4, %%mm5, %%mm1, %%mm0, %%mm7, %%mm3, %%mm6)
                    "pop %%"REG_BP"                         \n\t"
                    "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"

                    :: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                    "a" (&c->redDither)
                );
#endif
            } else {
                __asm__ volatile(
                    "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                    "mov        %4, %%"REG_b"               \n\t"
                    "push %%"REG_BP"                        \n\t"
                    YSCALEYUV2RGB(%%REGBP, %5)
                    "pcmpeqd %%mm7, %%mm7                   \n\t"
                    WRITEBGR32(%%REGb, 8280(%5), %%REGBP, %%mm2, %%mm4, %%mm5, %%mm7, %%mm0, %%mm1, %%mm3, %%mm6)
                    "pop %%"REG_BP"                         \n\t"
                    "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"

                    :: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                    "a" (&c->redDither)
                );
            }
            return;
        case PIX_FMT_BGR24:
            __asm__ volatile(
                "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                "mov        %4, %%"REG_b"               \n\t"
                "push %%"REG_BP"                        \n\t"
                YSCALEYUV2RGB(%%REGBP, %5)
                "pxor    %%mm7, %%mm7                   \n\t"
                WRITEBGR24(%%REGb, 8280(%5), %%REGBP)
                "pop %%"REG_BP"                         \n\t"
                "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"
                :: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                "a" (&c->redDither)
            );
            return;
        case PIX_FMT_RGB555:
            __asm__ volatile(
                "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                "mov        %4, %%"REG_b"               \n\t"
                "push %%"REG_BP"                        \n\t"
                YSCALEYUV2RGB(%%REGBP, %5)
                "pxor    %%mm7, %%mm7                   \n\t"
                /* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
#ifdef DITHER1XBPP
                "paddusb "BLUE_DITHER"(%5), %%mm2      \n\t"
                "paddusb "GREEN_DITHER"(%5), %%mm4      \n\t"
                "paddusb "RED_DITHER"(%5), %%mm5      \n\t"
#endif

                WRITERGB15(%%REGb, 8280(%5), %%REGBP)
                "pop %%"REG_BP"                         \n\t"
                "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"

                :: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                "a" (&c->redDither)
            );
            return;
        case PIX_FMT_RGB565:
            __asm__ volatile(
                "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                "mov        %4, %%"REG_b"               \n\t"
                "push %%"REG_BP"                        \n\t"
                YSCALEYUV2RGB(%%REGBP, %5)
                "pxor    %%mm7, %%mm7                   \n\t"
                /* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
#ifdef DITHER1XBPP
                "paddusb "BLUE_DITHER"(%5), %%mm2      \n\t"
                "paddusb "GREEN_DITHER"(%5), %%mm4      \n\t"
                "paddusb "RED_DITHER"(%5), %%mm5      \n\t"
#endif

                WRITERGB16(%%REGb, 8280(%5), %%REGBP)
                "pop %%"REG_BP"                         \n\t"
                "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"
                :: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                "a" (&c->redDither)
            );
            return;
        case PIX_FMT_YUYV422:
            __asm__ volatile(
                "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                "mov %4, %%"REG_b"                        \n\t"
                "push %%"REG_BP"                        \n\t"
                YSCALEYUV2PACKED(%%REGBP, %5)
                WRITEYUY2(%%REGb, 8280(%5), %%REGBP)
                "pop %%"REG_BP"                         \n\t"
                "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"
                :: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                "a" (&c->redDither)
            );
            return;
        default: break;
        }
    }
#endif //COMPILE_TEMPLATE_MMX
    YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGB2_C, YSCALE_YUV_2_PACKED2_C(void,0), YSCALE_YUV_2_GRAY16_2_C, YSCALE_YUV_2_MONO2_C)
}

/**
 * YV12 to RGB without scaling or interpolating
 */
static inline void RENAME(yuv2packed1)(SwsContext *c, const uint16_t *buf0, const uint16_t *uvbuf0, const uint16_t *uvbuf1,
                          const uint16_t *abuf0, uint8_t *dest, int dstW, int uvalpha, enum PixelFormat dstFormat, int flags, int y)
{
    const int yalpha1=0;
    int i;

    const uint16_t *buf1= buf0; //FIXME needed for RGB1/BGR1
    const int yalpha= 4096; //FIXME ...

    if (flags&SWS_FULL_CHR_H_INT) {
        c->yuv2packed2(c, buf0, buf0, uvbuf0, uvbuf1, abuf0, abuf0, dest, dstW, 0, uvalpha, y);
        return;
    }

#if COMPILE_TEMPLATE_MMX
    if(!(flags & SWS_BITEXACT)) {
        if (uvalpha < 2048) { // note this is not correct (shifts chrominance by 0.5 pixels) but it is a bit faster
            switch(dstFormat) {
            case PIX_FMT_RGB32:
                if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {
                    __asm__ volatile(
                        "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                        "mov        %4, %%"REG_b"               \n\t"
                        "push %%"REG_BP"                        \n\t"
                        YSCALEYUV2RGB1(%%REGBP, %5)
                        YSCALEYUV2RGB1_ALPHA(%%REGBP)
                        WRITEBGR32(%%REGb, 8280(%5), %%REGBP, %%mm2, %%mm4, %%mm5, %%mm7, %%mm0, %%mm1, %%mm3, %%mm6)
                        "pop %%"REG_BP"                         \n\t"
                        "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"

                        :: "c" (buf0), "d" (abuf0), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                        "a" (&c->redDither)
                    );
                } else {
                    __asm__ volatile(
                        "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                        "mov        %4, %%"REG_b"               \n\t"
                        "push %%"REG_BP"                        \n\t"
                        YSCALEYUV2RGB1(%%REGBP, %5)
                        "pcmpeqd %%mm7, %%mm7                   \n\t"
                        WRITEBGR32(%%REGb, 8280(%5), %%REGBP, %%mm2, %%mm4, %%mm5, %%mm7, %%mm0, %%mm1, %%mm3, %%mm6)
                        "pop %%"REG_BP"                         \n\t"
                        "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"

                        :: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                        "a" (&c->redDither)
                    );
                }
                return;
            case PIX_FMT_BGR24:
                __asm__ volatile(
                    "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                    "mov        %4, %%"REG_b"               \n\t"
                    "push %%"REG_BP"                        \n\t"
                    YSCALEYUV2RGB1(%%REGBP, %5)
                    "pxor    %%mm7, %%mm7                   \n\t"
                    WRITEBGR24(%%REGb, 8280(%5), %%REGBP)
                    "pop %%"REG_BP"                         \n\t"
                    "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"

                    :: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                    "a" (&c->redDither)
                );
                return;
            case PIX_FMT_RGB555:
                __asm__ volatile(
                    "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                    "mov        %4, %%"REG_b"               \n\t"
                    "push %%"REG_BP"                        \n\t"
                    YSCALEYUV2RGB1(%%REGBP, %5)
                    "pxor    %%mm7, %%mm7                   \n\t"
                    /* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
#ifdef DITHER1XBPP
                    "paddusb "BLUE_DITHER"(%5), %%mm2      \n\t"
                    "paddusb "GREEN_DITHER"(%5), %%mm4      \n\t"
                    "paddusb "RED_DITHER"(%5), %%mm5      \n\t"
#endif
                    WRITERGB15(%%REGb, 8280(%5), %%REGBP)
                    "pop %%"REG_BP"                         \n\t"
                    "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"

                    :: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                    "a" (&c->redDither)
                );
                return;
            case PIX_FMT_RGB565:
                __asm__ volatile(
                    "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                    "mov        %4, %%"REG_b"               \n\t"
                    "push %%"REG_BP"                        \n\t"
                    YSCALEYUV2RGB1(%%REGBP, %5)
                    "pxor    %%mm7, %%mm7                   \n\t"
                    /* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
#ifdef DITHER1XBPP
                    "paddusb "BLUE_DITHER"(%5), %%mm2      \n\t"
                    "paddusb "GREEN_DITHER"(%5), %%mm4      \n\t"
                    "paddusb "RED_DITHER"(%5), %%mm5      \n\t"
#endif

                    WRITERGB16(%%REGb, 8280(%5), %%REGBP)
                    "pop %%"REG_BP"                         \n\t"
                    "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"

                    :: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                    "a" (&c->redDither)
                );
                return;
            case PIX_FMT_YUYV422:
                __asm__ volatile(
                    "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                    "mov        %4, %%"REG_b"               \n\t"
                    "push %%"REG_BP"                        \n\t"
                    YSCALEYUV2PACKED1(%%REGBP, %5)
                    WRITEYUY2(%%REGb, 8280(%5), %%REGBP)
                    "pop %%"REG_BP"                         \n\t"
                    "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"

                    :: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                    "a" (&c->redDither)
                );
                return;
            }
        } else {
            switch(dstFormat) {
            case PIX_FMT_RGB32:
                if (CONFIG_SWSCALE_ALPHA && c->alpPixBuf) {
                    __asm__ volatile(
                        "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                        "mov        %4, %%"REG_b"               \n\t"
                        "push %%"REG_BP"                        \n\t"
                        YSCALEYUV2RGB1b(%%REGBP, %5)
                        YSCALEYUV2RGB1_ALPHA(%%REGBP)
                        WRITEBGR32(%%REGb, 8280(%5), %%REGBP, %%mm2, %%mm4, %%mm5, %%mm7, %%mm0, %%mm1, %%mm3, %%mm6)
                        "pop %%"REG_BP"                         \n\t"
                        "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"

                        :: "c" (buf0), "d" (abuf0), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                        "a" (&c->redDither)
                    );
                } else {
                    __asm__ volatile(
                        "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                        "mov        %4, %%"REG_b"               \n\t"
                        "push %%"REG_BP"                        \n\t"
                        YSCALEYUV2RGB1b(%%REGBP, %5)
                        "pcmpeqd %%mm7, %%mm7                   \n\t"
                        WRITEBGR32(%%REGb, 8280(%5), %%REGBP, %%mm2, %%mm4, %%mm5, %%mm7, %%mm0, %%mm1, %%mm3, %%mm6)
                        "pop %%"REG_BP"                         \n\t"
                        "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"

                        :: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                        "a" (&c->redDither)
                    );
                }
                return;
            case PIX_FMT_BGR24:
                __asm__ volatile(
                    "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                    "mov        %4, %%"REG_b"               \n\t"
                    "push %%"REG_BP"                        \n\t"
                    YSCALEYUV2RGB1b(%%REGBP, %5)
                    "pxor    %%mm7, %%mm7                   \n\t"
                    WRITEBGR24(%%REGb, 8280(%5), %%REGBP)
                    "pop %%"REG_BP"                         \n\t"
                    "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"

                    :: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                    "a" (&c->redDither)
                );
                return;
            case PIX_FMT_RGB555:
                __asm__ volatile(
                    "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                    "mov        %4, %%"REG_b"               \n\t"
                    "push %%"REG_BP"                        \n\t"
                    YSCALEYUV2RGB1b(%%REGBP, %5)
                    "pxor    %%mm7, %%mm7                   \n\t"
                    /* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
#ifdef DITHER1XBPP
                    "paddusb "BLUE_DITHER"(%5), %%mm2      \n\t"
                    "paddusb "GREEN_DITHER"(%5), %%mm4      \n\t"
                    "paddusb "RED_DITHER"(%5), %%mm5      \n\t"
#endif
                    WRITERGB15(%%REGb, 8280(%5), %%REGBP)
                    "pop %%"REG_BP"                         \n\t"
                    "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"

                    :: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                    "a" (&c->redDither)
                );
                return;
            case PIX_FMT_RGB565:
                __asm__ volatile(
                    "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                    "mov        %4, %%"REG_b"               \n\t"
                    "push %%"REG_BP"                        \n\t"
                    YSCALEYUV2RGB1b(%%REGBP, %5)
                    "pxor    %%mm7, %%mm7                   \n\t"
                    /* mm2=B, %%mm4=G, %%mm5=R, %%mm7=0 */
#ifdef DITHER1XBPP
                    "paddusb "BLUE_DITHER"(%5), %%mm2      \n\t"
                    "paddusb "GREEN_DITHER"(%5), %%mm4      \n\t"
                    "paddusb "RED_DITHER"(%5), %%mm5      \n\t"
#endif

                    WRITERGB16(%%REGb, 8280(%5), %%REGBP)
                    "pop %%"REG_BP"                         \n\t"
                    "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"

                    :: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                    "a" (&c->redDither)
                );
                return;
            case PIX_FMT_YUYV422:
                __asm__ volatile(
                    "mov %%"REG_b", "ESP_OFFSET"(%5)        \n\t"
                    "mov        %4, %%"REG_b"               \n\t"
                    "push %%"REG_BP"                        \n\t"
                    YSCALEYUV2PACKED1b(%%REGBP, %5)
                    WRITEYUY2(%%REGb, 8280(%5), %%REGBP)
                    "pop %%"REG_BP"                         \n\t"
                    "mov "ESP_OFFSET"(%5), %%"REG_b"        \n\t"

                    :: "c" (buf0), "d" (buf1), "S" (uvbuf0), "D" (uvbuf1), "m" (dest),
                    "a" (&c->redDither)
                );
                return;
            }
        }
    }
#endif /* COMPILE_TEMPLATE_MMX */
    if (uvalpha < 2048) {
        YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGB1_C, YSCALE_YUV_2_PACKED1_C(void,0), YSCALE_YUV_2_GRAY16_1_C, YSCALE_YUV_2_MONO2_C)
    } else {
        YSCALE_YUV_2_ANYRGB_C(YSCALE_YUV_2_RGB1B_C, YSCALE_YUV_2_PACKED1B_C(void,0), YSCALE_YUV_2_GRAY16_1_C, YSCALE_YUV_2_MONO2_C)
    }
}

//FIXME yuy2* can read up to 7 samples too much

static inline void RENAME(yuy2ToY)(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)
{
#if COMPILE_TEMPLATE_MMX
    __asm__ volatile(
        "movq "MANGLE(bm01010101)", %%mm2           \n\t"
        "mov                    %0, %%"REG_a"       \n\t"
        "1:                                         \n\t"
        "movq    (%1, %%"REG_a",2), %%mm0           \n\t"
        "movq   8(%1, %%"REG_a",2), %%mm1           \n\t"
        "pand                %%mm2, %%mm0           \n\t"
        "pand                %%mm2, %%mm1           \n\t"
        "packuswb            %%mm1, %%mm0           \n\t"
        "movq                %%mm0, (%2, %%"REG_a") \n\t"
        "add                    $8, %%"REG_a"       \n\t"
        " js                    1b                  \n\t"
        : : "g" ((x86_reg)-width), "r" (src+width*2), "r" (dst+width)
        : "%"REG_a
    );
#else
    int i;
    for (i=0; i<width; i++)
        dst[i]= src[2*i];
#endif
}

static inline void RENAME(yuy2ToUV)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, long width, uint32_t *unused)
{
#if COMPILE_TEMPLATE_MMX
    __asm__ volatile(
        "movq "MANGLE(bm01010101)", %%mm4           \n\t"
        "mov                    %0, %%"REG_a"       \n\t"
        "1:                                         \n\t"
        "movq    (%1, %%"REG_a",4), %%mm0           \n\t"
        "movq   8(%1, %%"REG_a",4), %%mm1           \n\t"
        "psrlw                  $8, %%mm0           \n\t"
        "psrlw                  $8, %%mm1           \n\t"
        "packuswb            %%mm1, %%mm0           \n\t"
        "movq                %%mm0, %%mm1           \n\t"
        "psrlw                  $8, %%mm0           \n\t"
        "pand                %%mm4, %%mm1           \n\t"
        "packuswb            %%mm0, %%mm0           \n\t"
        "packuswb            %%mm1, %%mm1           \n\t"
        "movd                %%mm0, (%3, %%"REG_a") \n\t"
        "movd                %%mm1, (%2, %%"REG_a") \n\t"
        "add                    $4, %%"REG_a"       \n\t"
        " js                    1b                  \n\t"
        : : "g" ((x86_reg)-width), "r" (src1+width*4), "r" (dstU+width), "r" (dstV+width)
        : "%"REG_a
    );
#else
    int i;
    for (i=0; i<width; i++) {
        dstU[i]= src1[4*i + 1];
        dstV[i]= src1[4*i + 3];
    }
#endif
    assert(src1 == src2);
}

static inline void RENAME(LEToUV)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, long width, uint32_t *unused)
{
#if COMPILE_TEMPLATE_MMX
    __asm__ volatile(
        "mov                    %0, %%"REG_a"       \n\t"
        "1:                                         \n\t"
        "movq    (%1, %%"REG_a",2), %%mm0           \n\t"
        "movq   8(%1, %%"REG_a",2), %%mm1           \n\t"
        "movq    (%2, %%"REG_a",2), %%mm2           \n\t"
        "movq   8(%2, %%"REG_a",2), %%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, (%3, %%"REG_a") \n\t"
        "movq                %%mm2, (%4, %%"REG_a") \n\t"
        "add                    $8, %%"REG_a"       \n\t"
        " js                    1b                  \n\t"
        : : "g" ((x86_reg)-width), "r" (src1+width*2), "r" (src2+width*2), "r" (dstU+width), "r" (dstV+width)
        : "%"REG_a
    );
#else
    int i;
    for (i=0; i<width; i++) {
        dstU[i]= src1[2*i + 1];
        dstV[i]= src2[2*i + 1];
    }
#endif
}

/* This is almost identical to the previous, end exists only because
 * yuy2ToY/UV)(dst, src+1, ...) would have 100% unaligned accesses. */
static inline void RENAME(uyvyToY)(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)
{
#if COMPILE_TEMPLATE_MMX
    __asm__ volatile(
        "mov                  %0, %%"REG_a"         \n\t"
        "1:                                         \n\t"
        "movq  (%1, %%"REG_a",2), %%mm0             \n\t"
        "movq 8(%1, %%"REG_a",2), %%mm1             \n\t"
        "psrlw                $8, %%mm0             \n\t"
        "psrlw                $8, %%mm1             \n\t"
        "packuswb          %%mm1, %%mm0             \n\t"
        "movq              %%mm0, (%2, %%"REG_a")   \n\t"
        "add                  $8, %%"REG_a"         \n\t"
        " js                  1b                    \n\t"
        : : "g" ((x86_reg)-width), "r" (src+width*2), "r" (dst+width)
        : "%"REG_a
    );
#else
    int i;
    for (i=0; i<width; i++)
        dst[i]= src[2*i+1];
#endif
}

static inline void RENAME(uyvyToUV)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, long width, uint32_t *unused)
{
#if COMPILE_TEMPLATE_MMX
    __asm__ volatile(
        "movq "MANGLE(bm01010101)", %%mm4           \n\t"
        "mov                    %0, %%"REG_a"       \n\t"
        "1:                                         \n\t"
        "movq    (%1, %%"REG_a",4), %%mm0           \n\t"
        "movq   8(%1, %%"REG_a",4), %%mm1           \n\t"
        "pand                %%mm4, %%mm0           \n\t"
        "pand                %%mm4, %%mm1           \n\t"
        "packuswb            %%mm1, %%mm0           \n\t"
        "movq                %%mm0, %%mm1           \n\t"
        "psrlw                  $8, %%mm0           \n\t"
        "pand                %%mm4, %%mm1           \n\t"
        "packuswb            %%mm0, %%mm0           \n\t"
        "packuswb            %%mm1, %%mm1           \n\t"
        "movd                %%mm0, (%3, %%"REG_a") \n\t"
        "movd                %%mm1, (%2, %%"REG_a") \n\t"
        "add                    $4, %%"REG_a"       \n\t"
        " js                    1b                  \n\t"
        : : "g" ((x86_reg)-width), "r" (src1+width*4), "r" (dstU+width), "r" (dstV+width)
        : "%"REG_a
    );
#else
    int i;
    for (i=0; i<width; i++) {
        dstU[i]= src1[4*i + 0];
        dstV[i]= src1[4*i + 2];
    }
#endif
    assert(src1 == src2);
}

static inline void RENAME(BEToUV)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, long width, uint32_t *unused)
{
#if COMPILE_TEMPLATE_MMX
    __asm__ volatile(
        "movq "MANGLE(bm01010101)", %%mm4           \n\t"
        "mov                    %0, %%"REG_a"       \n\t"
        "1:                                         \n\t"
        "movq    (%1, %%"REG_a",2), %%mm0           \n\t"
        "movq   8(%1, %%"REG_a",2), %%mm1           \n\t"
        "movq    (%2, %%"REG_a",2), %%mm2           \n\t"
        "movq   8(%2, %%"REG_a",2), %%mm3           \n\t"
        "pand                %%mm4, %%mm0           \n\t"
        "pand                %%mm4, %%mm1           \n\t"
        "pand                %%mm4, %%mm2           \n\t"
        "pand                %%mm4, %%mm3           \n\t"
        "packuswb            %%mm1, %%mm0           \n\t"
        "packuswb            %%mm3, %%mm2           \n\t"
        "movq                %%mm0, (%3, %%"REG_a") \n\t"
        "movq                %%mm2, (%4, %%"REG_a") \n\t"
        "add                    $8, %%"REG_a"       \n\t"
        " js                    1b                  \n\t"
        : : "g" ((x86_reg)-width), "r" (src1+width*2), "r" (src2+width*2), "r" (dstU+width), "r" (dstV+width)
        : "%"REG_a
    );
#else
    int i;
    for (i=0; i<width; i++) {
        dstU[i]= src1[2*i];
        dstV[i]= src2[2*i];
    }
#endif
}

static inline void RENAME(nvXXtoUV)(uint8_t *dst1, uint8_t *dst2,
                                    const uint8_t *src, long width)
{
#if COMPILE_TEMPLATE_MMX
    __asm__ volatile(
        "movq "MANGLE(bm01010101)", %%mm4           \n\t"
        "mov                    %0, %%"REG_a"       \n\t"
        "1:                                         \n\t"
        "movq    (%1, %%"REG_a",2), %%mm0           \n\t"
        "movq   8(%1, %%"REG_a",2), %%mm1           \n\t"
        "movq                %%mm0, %%mm2           \n\t"
        "movq                %%mm1, %%mm3           \n\t"
        "pand                %%mm4, %%mm0           \n\t"
        "pand                %%mm4, %%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, (%2, %%"REG_a") \n\t"
        "movq                %%mm2, (%3, %%"REG_a") \n\t"
        "add                    $8, %%"REG_a"       \n\t"
        " js                    1b                  \n\t"
        : : "g" ((x86_reg)-width), "r" (src+width*2), "r" (dst1+width), "r" (dst2+width)
        : "%"REG_a
    );
#else
    int i;
    for (i = 0; i < width; i++) {
        dst1[i] = src[2*i+0];
        dst2[i] = src[2*i+1];
    }
#endif
}

static inline void RENAME(nv12ToUV)(uint8_t *dstU, uint8_t *dstV,
                                    const uint8_t *src1, const uint8_t *src2,
                                    long width, uint32_t *unused)
{
    RENAME(nvXXtoUV)(dstU, dstV, src1, width);
}

static inline void RENAME(nv21ToUV)(uint8_t *dstU, uint8_t *dstV,
                                    const uint8_t *src1, const uint8_t *src2,
                                    long width, uint32_t *unused)
{
    RENAME(nvXXtoUV)(dstV, dstU, src1, width);
}

#if COMPILE_TEMPLATE_MMX
static inline void RENAME(bgr24ToY_mmx)(uint8_t *dst, const uint8_t *src, long width, enum PixelFormat srcFormat)
{

    if(srcFormat == PIX_FMT_BGR24) {
        __asm__ volatile(
            "movq  "MANGLE(ff_bgr24toY1Coeff)", %%mm5       \n\t"
            "movq  "MANGLE(ff_bgr24toY2Coeff)", %%mm6       \n\t"
            :
        );
    } else {
        __asm__ volatile(
            "movq  "MANGLE(ff_rgb24toY1Coeff)", %%mm5       \n\t"
            "movq  "MANGLE(ff_rgb24toY2Coeff)", %%mm6       \n\t"
            :
        );
    }

    __asm__ volatile(
        "movq  "MANGLE(ff_bgr24toYOffset)", %%mm4   \n\t"
        "mov                        %2, %%"REG_a"   \n\t"
        "pxor                    %%mm7, %%mm7       \n\t"
        "1:                                         \n\t"
        PREFETCH"               64(%0)              \n\t"
        "movd                     (%0), %%mm0       \n\t"
        "movd                    2(%0), %%mm1       \n\t"
        "movd                    6(%0), %%mm2       \n\t"
        "movd                    8(%0), %%mm3       \n\t"
        "add                       $12, %0          \n\t"
        "punpcklbw               %%mm7, %%mm0       \n\t"
        "punpcklbw               %%mm7, %%mm1       \n\t"
        "punpcklbw               %%mm7, %%mm2       \n\t"
        "punpcklbw               %%mm7, %%mm3       \n\t"
        "pmaddwd                 %%mm5, %%mm0       \n\t"
        "pmaddwd                 %%mm6, %%mm1       \n\t"
        "pmaddwd                 %%mm5, %%mm2       \n\t"
        "pmaddwd                 %%mm6, %%mm3       \n\t"
        "paddd                   %%mm1, %%mm0       \n\t"
        "paddd                   %%mm3, %%mm2       \n\t"
        "paddd                   %%mm4, %%mm0       \n\t"
        "paddd                   %%mm4, %%mm2       \n\t"
        "psrad                     $15, %%mm0       \n\t"
        "psrad                     $15, %%mm2       \n\t"
        "packssdw                %%mm2, %%mm0       \n\t"
        "packuswb                %%mm0, %%mm0       \n\t"
        "movd                %%mm0, (%1, %%"REG_a") \n\t"
        "add                        $4, %%"REG_a"   \n\t"
        " js                        1b              \n\t"
    : "+r" (src)
    : "r" (dst+width), "g" ((x86_reg)-width)
    : "%"REG_a
    );
}

static inline void RENAME(bgr24ToUV_mmx)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src, long width, enum PixelFormat srcFormat)
{
    __asm__ volatile(
        "movq                    24+%4, %%mm6       \n\t"
        "mov                        %3, %%"REG_a"   \n\t"
        "pxor                    %%mm7, %%mm7       \n\t"
        "1:                                         \n\t"
        PREFETCH"               64(%0)              \n\t"
        "movd                     (%0), %%mm0       \n\t"
        "movd                    2(%0), %%mm1       \n\t"
        "punpcklbw               %%mm7, %%mm0       \n\t"
        "punpcklbw               %%mm7, %%mm1       \n\t"
        "movq                    %%mm0, %%mm2       \n\t"
        "movq                    %%mm1, %%mm3       \n\t"
        "pmaddwd                    %4, %%mm0       \n\t"
        "pmaddwd                  8+%4, %%mm1       \n\t"
        "pmaddwd                 16+%4, %%mm2       \n\t"
        "pmaddwd                 %%mm6, %%mm3       \n\t"
        "paddd                   %%mm1, %%mm0       \n\t"
        "paddd                   %%mm3, %%mm2       \n\t"

        "movd                    6(%0), %%mm1       \n\t"
        "movd                    8(%0), %%mm3       \n\t"
        "add                       $12, %0          \n\t"
        "punpcklbw               %%mm7, %%mm1       \n\t"
        "punpcklbw               %%mm7, %%mm3       \n\t"
        "movq                    %%mm1, %%mm4       \n\t"
        "movq                    %%mm3, %%mm5       \n\t"
        "pmaddwd                    %4, %%mm1       \n\t"
        "pmaddwd                  8+%4, %%mm3       \n\t"
        "pmaddwd                 16+%4, %%mm4       \n\t"
        "pmaddwd                 %%mm6, %%mm5       \n\t"
        "paddd                   %%mm3, %%mm1       \n\t"
        "paddd                   %%mm5, %%mm4       \n\t"

        "movq "MANGLE(ff_bgr24toUVOffset)", %%mm3       \n\t"
        "paddd                   %%mm3, %%mm0       \n\t"
        "paddd                   %%mm3, %%mm2       \n\t"
        "paddd                   %%mm3, %%mm1       \n\t"
        "paddd                   %%mm3, %%mm4       \n\t"
        "psrad                     $15, %%mm0       \n\t"
        "psrad                     $15, %%mm2       \n\t"
        "psrad                     $15, %%mm1       \n\t"
        "psrad                     $15, %%mm4       \n\t"
        "packssdw                %%mm1, %%mm0       \n\t"
        "packssdw                %%mm4, %%mm2       \n\t"
        "packuswb                %%mm0, %%mm0       \n\t"
        "packuswb                %%mm2, %%mm2       \n\t"
        "movd                %%mm0, (%1, %%"REG_a") \n\t"
        "movd                %%mm2, (%2, %%"REG_a") \n\t"
        "add                        $4, %%"REG_a"   \n\t"
        " js                        1b              \n\t"
    : "+r" (src)
    : "r" (dstU+width), "r" (dstV+width), "g" ((x86_reg)-width), "m"(ff_bgr24toUV[srcFormat == PIX_FMT_RGB24][0])
    : "%"REG_a
    );
}
#endif

static inline void RENAME(bgr24ToY)(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)
{
#if COMPILE_TEMPLATE_MMX
    RENAME(bgr24ToY_mmx)(dst, src, width, PIX_FMT_BGR24);
#else
    int i;
    for (i=0; i<width; i++) {
        int b= src[i*3+0];
        int g= src[i*3+1];
        int r= src[i*3+2];

        dst[i]= ((RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
    }
#endif /* COMPILE_TEMPLATE_MMX */
}

static inline void RENAME(bgr24ToUV)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, long width, uint32_t *unused)
{
#if COMPILE_TEMPLATE_MMX
    RENAME(bgr24ToUV_mmx)(dstU, dstV, src1, width, PIX_FMT_BGR24);
#else
    int i;
    for (i=0; i<width; i++) {
        int b= src1[3*i + 0];
        int g= src1[3*i + 1];
        int r= src1[3*i + 2];

        dstU[i]= (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT;
        dstV[i]= (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT;
    }
#endif /* COMPILE_TEMPLATE_MMX */
    assert(src1 == src2);
}

static inline void RENAME(bgr24ToUV_half)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, long width, uint32_t *unused)
{
    int i;
    for (i=0; i<width; i++) {
        int b= src1[6*i + 0] + src1[6*i + 3];
        int g= src1[6*i + 1] + src1[6*i + 4];
        int r= src1[6*i + 2] + src1[6*i + 5];

        dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT))>>(RGB2YUV_SHIFT+1);
        dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT))>>(RGB2YUV_SHIFT+1);
    }
    assert(src1 == src2);
}

static inline void RENAME(rgb24ToY)(uint8_t *dst, const uint8_t *src, long width, uint32_t *unused)
{
#if COMPILE_TEMPLATE_MMX
    RENAME(bgr24ToY_mmx)(dst, src, width, PIX_FMT_RGB24);
#else
    int i;
    for (i=0; i<width; i++) {
        int r= src[i*3+0];
        int g= src[i*3+1];
        int b= src[i*3+2];

        dst[i]= ((RY*r + GY*g + BY*b + (33<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT);
    }
#endif
}

static inline void RENAME(rgb24ToUV)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, long width, uint32_t *unused)
{
#if COMPILE_TEMPLATE_MMX
    assert(src1==src2);
    RENAME(bgr24ToUV_mmx)(dstU, dstV, src1, width, PIX_FMT_RGB24);
#else
    int i;
    assert(src1==src2);
    for (i=0; i<width; i++) {
        int r= src1[3*i + 0];
        int g= src1[3*i + 1];
        int b= src1[3*i + 2];

        dstU[i]= (RU*r + GU*g + BU*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT;
        dstV[i]= (RV*r + GV*g + BV*b + (257<<(RGB2YUV_SHIFT-1)))>>RGB2YUV_SHIFT;
    }
#endif
}

static inline void RENAME(rgb24ToUV_half)(uint8_t *dstU, uint8_t *dstV, const uint8_t *src1, const uint8_t *src2, long width, uint32_t *unused)
{
    int i;
    assert(src1==src2);
    for (i=0; i<width; i++) {
        int r= src1[6*i + 0] + src1[6*i + 3];
        int g= src1[6*i + 1] + src1[6*i + 4];
        int b= src1[6*i + 2] + src1[6*i + 5];

        dstU[i]= (RU*r + GU*g + BU*b + (257<<RGB2YUV_SHIFT))>>(RGB2YUV_SHIFT+1);
        dstV[i]= (RV*r + GV*g + BV*b + (257<<RGB2YUV_SHIFT))>>(RGB2YUV_SHIFT+1);
    }
}


// bilinear / bicubic scaling
static inline void RENAME(hScale)(int16_t *dst, int dstW, const uint8_t *src, int srcW, int xInc,
                                  const int16_t *filter, const int16_t *filterPos, long filterSize)
{
#if COMPILE_TEMPLATE_MMX
    assert(filterSize % 4 == 0 && filterSize>0);
    if (filterSize==4) { // Always true for upscaling, sometimes for down, too.
        x86_reg counter= -2*dstW;
        filter-= counter*2;
        filterPos-= counter/2;
        dst-= counter/2;
        __asm__ volatile(
#if defined(PIC)
            "push            %%"REG_b"              \n\t"
#endif
            "pxor                %%mm7, %%mm7       \n\t"
            "push           %%"REG_BP"              \n\t" // we use 7 regs here ...
            "mov             %%"REG_a", %%"REG_BP"  \n\t"
            ASMALIGN(4)
            "1:                                     \n\t"
            "movzwl   (%2, %%"REG_BP"), %%eax       \n\t"
            "movzwl  2(%2, %%"REG_BP"), %%ebx       \n\t"
            "movq  (%1, %%"REG_BP", 4), %%mm1       \n\t"
            "movq 8(%1, %%"REG_BP", 4), %%mm3       \n\t"
            "movd      (%3, %%"REG_a"), %%mm0       \n\t"
            "movd      (%3, %%"REG_b"), %%mm2       \n\t"
            "punpcklbw           %%mm7, %%mm0       \n\t"
            "punpcklbw           %%mm7, %%mm2       \n\t"
            "pmaddwd             %%mm1, %%mm0       \n\t"
            "pmaddwd             %%mm2, %%mm3       \n\t"
            "movq                %%mm0, %%mm4       \n\t"
            "punpckldq           %%mm3, %%mm0       \n\t"
            "punpckhdq           %%mm3, %%mm4       \n\t"
            "paddd               %%mm4, %%mm0       \n\t"
            "psrad                  $7, %%mm0       \n\t"
            "packssdw            %%mm0, %%mm0       \n\t"
            "movd                %%mm0, (%4, %%"REG_BP")    \n\t"
            "add                    $4, %%"REG_BP"  \n\t"
            " jnc                   1b              \n\t"

            "pop            %%"REG_BP"              \n\t"
#if defined(PIC)
            "pop             %%"REG_b"              \n\t"
#endif
            : "+a" (counter)
            : "c" (filter), "d" (filterPos), "S" (src), "D" (dst)
#if !defined(PIC)
            : "%"REG_b
#endif
        );
    } else if (filterSize==8) {
        x86_reg counter= -2*dstW;
        filter-= counter*4;
        filterPos-= counter/2;
        dst-= counter/2;
        __asm__ volatile(
#if defined(PIC)
            "push             %%"REG_b"             \n\t"
#endif
            "pxor                 %%mm7, %%mm7      \n\t"
            "push            %%"REG_BP"             \n\t" // we use 7 regs here ...
            "mov              %%"REG_a", %%"REG_BP" \n\t"
            ASMALIGN(4)
            "1:                                     \n\t"
            "movzwl    (%2, %%"REG_BP"), %%eax      \n\t"
            "movzwl   2(%2, %%"REG_BP"), %%ebx      \n\t"
            "movq   (%1, %%"REG_BP", 8), %%mm1      \n\t"
            "movq 16(%1, %%"REG_BP", 8), %%mm3      \n\t"
            "movd       (%3, %%"REG_a"), %%mm0      \n\t"
            "movd       (%3, %%"REG_b"), %%mm2      \n\t"
            "punpcklbw            %%mm7, %%mm0      \n\t"
            "punpcklbw            %%mm7, %%mm2      \n\t"
            "pmaddwd              %%mm1, %%mm0      \n\t"
            "pmaddwd              %%mm2, %%mm3      \n\t"

            "movq  8(%1, %%"REG_BP", 8), %%mm1      \n\t"
            "movq 24(%1, %%"REG_BP", 8), %%mm5      \n\t"
            "movd      4(%3, %%"REG_a"), %%mm4      \n\t"
            "movd      4(%3, %%"REG_b"), %%mm2      \n\t"
            "punpcklbw            %%mm7, %%mm4      \n\t"
            "punpcklbw            %%mm7, %%mm2      \n\t"
            "pmaddwd              %%mm1, %%mm4      \n\t"
            "pmaddwd              %%mm2, %%mm5      \n\t"
            "paddd                %%mm4, %%mm0      \n\t"
            "paddd                %%mm5, %%mm3      \n\t"
            "movq                 %%mm0, %%mm4      \n\t"
            "punpckldq            %%mm3, %%mm0      \n\t"
            "punpckhdq            %%mm3, %%mm4      \n\t"
            "paddd                %%mm4, %%mm0      \n\t"
            "psrad                   $7, %%mm0      \n\t"
            "packssdw             %%mm0, %%mm0      \n\t"
            "movd                 %%mm0, (%4, %%"REG_BP")   \n\t"
            "add                     $4, %%"REG_BP" \n\t"
            " jnc                    1b             \n\t"

            "pop             %%"REG_BP"             \n\t"
#if defined(PIC)
            "pop              %%"REG_b"             \n\t"
#endif
            : "+a" (counter)
            : "c" (filter), "d" (filterPos), "S" (src), "D" (dst)
#if !defined(PIC)
            : "%"REG_b
#endif
        );
    } else {
        const uint8_t *offset = src+filterSize;
        x86_reg counter= -2*dstW;
        //filter-= counter*filterSize/2;
        filterPos-= counter/2;
        dst-= counter/2;
        __asm__ volatile(
            "pxor                  %%mm7, %%mm7     \n\t"
            ASMALIGN(4)
            "1:                                     \n\t"
            "mov                      %2, %%"REG_c" \n\t"
            "movzwl      (%%"REG_c", %0), %%eax     \n\t"
            "movzwl     2(%%"REG_c", %0), %%edx     \n\t"
            "mov                      %5, %%"REG_c" \n\t"
            "pxor                  %%mm4, %%mm4     \n\t"
            "pxor                  %%mm5, %%mm5     \n\t"
            "2:                                     \n\t"
            "movq                   (%1), %%mm1     \n\t"
            "movq               (%1, %6), %%mm3     \n\t"
            "movd (%%"REG_c", %%"REG_a"), %%mm0     \n\t"
            "movd (%%"REG_c", %%"REG_d"), %%mm2     \n\t"
            "punpcklbw             %%mm7, %%mm0     \n\t"
            "punpcklbw             %%mm7, %%mm2     \n\t"
            "pmaddwd               %%mm1, %%mm0     \n\t"
            "pmaddwd               %%mm2, %%mm3     \n\t"
            "paddd                 %%mm3, %%mm5     \n\t"
            "paddd                 %%mm0, %%mm4     \n\t"
            "add                      $8, %1        \n\t"
            "add                      $4, %%"REG_c" \n\t"
            "cmp                      %4, %%"REG_c" \n\t"
            " jb                      2b            \n\t"
            "add                      %6, %1        \n\t"
            "movq                  %%mm4, %%mm0     \n\t"
            "punpckldq             %%mm5, %%mm4     \n\t"
            "punpckhdq             %%mm5, %%mm0     \n\t"
            "paddd                 %%mm0, %%mm4     \n\t"
            "psrad                    $7, %%mm4     \n\t"
            "packssdw              %%mm4, %%mm4     \n\t"
            "mov                      %3, %%"REG_a" \n\t"
            "movd                  %%mm4, (%%"REG_a", %0)   \n\t"
            "add                      $4, %0        \n\t"
            " jnc                     1b            \n\t"

            : "+r" (counter), "+r" (filter)
            : "m" (filterPos), "m" (dst), "m"(offset),
            "m" (src), "r" ((x86_reg)filterSize*2)
            : "%"REG_a, "%"REG_c, "%"REG_d
        );
    }
#else
#if COMPILE_TEMPLATE_ALTIVEC
    hScale_altivec_real(dst, dstW, src, srcW, xInc, filter, filterPos, filterSize);
#else
    int i;
    for (i=0; i<dstW; i++) {
        int j;
        int srcPos= filterPos[i];
        int val=0;
        //printf("filterPos: %d\n", filterPos[i]);
        for (j=0; j<filterSize; j++) {
            //printf("filter: %d, src: %d\n", filter[i], src[srcPos + j]);
            val += ((int)src[srcPos + j])*filter[filterSize*i + j];
        }
        //filter += hFilterSize;
        dst[i] = FFMIN(val>>7, (1<<15)-1); // the cubic equation does overflow ...
        //dst[i] = val>>7;
    }
#endif /* COMPILE_ALTIVEC */
#endif /* COMPILE_MMX */
}

//FIXME all pal and rgb srcFormats could do this convertion as well
//FIXME all scalers more complex than bilinear could do half of this transform
static void RENAME(chrRangeToJpeg)(uint16_t *dst, int width)
{
    int i;
    for (i = 0; i < width; i++) {
        dst[i     ] = (FFMIN(dst[i     ],30775)*4663 - 9289992)>>12; //-264
        dst[i+VOFW] = (FFMIN(dst[i+VOFW],30775)*4663 - 9289992)>>12; //-264
    }
}
static void RENAME(chrRangeFromJpeg)(uint16_t *dst, int width)
{
    int i;
    for (i = 0; i < width; i++) {
        dst[i     ] = (dst[i     ]*1799 + 4081085)>>11; //1469
        dst[i+VOFW] = (dst[i+VOFW]*1799 + 4081085)>>11; //1469
    }
}
static void RENAME(lumRangeToJpeg)(uint16_t *dst, int width)
{
    int i;
    for (i = 0; i < width; i++)
        dst[i] = (FFMIN(dst[i],30189)*19077 - 39057361)>>14;
}
static void RENAME(lumRangeFromJpeg)(uint16_t *dst, int width)
{
    int i;
    for (i = 0; i < width; i++)
        dst[i] = (dst[i]*14071 + 33561947)>>14;
}

#define FAST_BILINEAR_X86 \
    "subl    %%edi, %%esi    \n\t" /*  src[xx+1] - src[xx] */                   \
    "imull   %%ecx, %%esi    \n\t" /* (src[xx+1] - src[xx])*xalpha */           \
    "shll      $16, %%edi    \n\t"                                              \
    "addl    %%edi, %%esi    \n\t" /* src[xx+1]*xalpha + src[xx]*(1-xalpha) */  \
    "mov        %1, %%"REG_D"\n\t"                                              \
    "shrl       $9, %%esi    \n\t"                                              \

static inline void RENAME(hyscale_fast)(SwsContext *c, int16_t *dst,
                                        long dstWidth, const uint8_t *src, int srcW,
                                        int xInc)
{
#if ARCH_X86 && CONFIG_GPL
#if COMPILE_TEMPLATE_MMX2
    int32_t *filterPos = c->hLumFilterPos;
    int16_t *filter    = c->hLumFilter;
    int     canMMX2BeUsed  = c->canMMX2BeUsed;
    void    *mmx2FilterCode= c->lumMmx2FilterCode;
    int i;
#if defined(PIC)
    DECLARE_ALIGNED(8, uint64_t, ebxsave);
#endif
    if (canMMX2BeUsed) {
        __asm__ volatile(
#if defined(PIC)
            "mov               %%"REG_b", %5        \n\t"
#endif
            "pxor                  %%mm7, %%mm7     \n\t"
            "mov                      %0, %%"REG_c" \n\t"
            "mov                      %1, %%"REG_D" \n\t"
            "mov                      %2, %%"REG_d" \n\t"
            "mov                      %3, %%"REG_b" \n\t"
            "xor               %%"REG_a", %%"REG_a" \n\t" // i
            PREFETCH"        (%%"REG_c")            \n\t"
            PREFETCH"      32(%%"REG_c")            \n\t"
            PREFETCH"      64(%%"REG_c")            \n\t"

#if ARCH_X86_64

#define CALL_MMX2_FILTER_CODE \
            "movl            (%%"REG_b"), %%esi     \n\t"\
            "call                    *%4            \n\t"\
            "movl (%%"REG_b", %%"REG_a"), %%esi     \n\t"\
            "add               %%"REG_S", %%"REG_c" \n\t"\
            "add               %%"REG_a", %%"REG_D" \n\t"\
            "xor               %%"REG_a", %%"REG_a" \n\t"\

#else

#define CALL_MMX2_FILTER_CODE \
            "movl (%%"REG_b"), %%esi        \n\t"\
            "call         *%4                       \n\t"\
            "addl (%%"REG_b", %%"REG_a"), %%"REG_c" \n\t"\
            "add               %%"REG_a", %%"REG_D" \n\t"\
            "xor               %%"REG_a", %%"REG_a" \n\t"\

#endif /* ARCH_X86_64 */

            CALL_MMX2_FILTER_CODE
            CALL_MMX2_FILTER_CODE
            CALL_MMX2_FILTER_CODE
            CALL_MMX2_FILTER_CODE
            CALL_MMX2_FILTER_CODE
            CALL_MMX2_FILTER_CODE
            CALL_MMX2_FILTER_CODE
            CALL_MMX2_FILTER_CODE

#if defined(PIC)
            "mov                      %5, %%"REG_b" \n\t"
#endif
            :: "m" (src), "m" (dst), "m" (filter), "m" (filterPos),
            "m" (mmx2FilterCode)
#if defined(PIC)
            ,"m" (ebxsave)
#endif
            : "%"REG_a, "%"REG_c, "%"REG_d, "%"REG_S, "%"REG_D
#if !defined(PIC)
            ,"%"REG_b
#endif
        );
        for (i=dstWidth-1; (i*xInc)>>16 >=srcW-1; i--) dst[i] = src[srcW-1]*128;
    } else {
#endif /* COMPILE_TEMPLATE_MMX2 */
    x86_reg xInc_shr16 = xInc >> 16;
    uint16_t xInc_mask = xInc & 0xffff;
    //NO MMX just normal asm ...
    __asm__ volatile(
        "xor %%"REG_a", %%"REG_a"            \n\t" // i
        "xor %%"REG_d", %%"REG_d"            \n\t" // xx
        "xorl    %%ecx, %%ecx                \n\t" // xalpha
        ASMALIGN(4)
        "1:                                  \n\t"
        "movzbl    (%0, %%"REG_d"), %%edi    \n\t" //src[xx]
        "movzbl   1(%0, %%"REG_d"), %%esi    \n\t" //src[xx+1]
        FAST_BILINEAR_X86
        "movw     %%si, (%%"REG_D", %%"REG_a", 2)   \n\t"
        "addw       %4, %%cx                 \n\t" //xalpha += xInc&0xFFFF
        "adc        %3, %%"REG_d"            \n\t" //xx+= xInc>>16 + carry

        "movzbl    (%0, %%"REG_d"), %%edi    \n\t" //src[xx]
        "movzbl   1(%0, %%"REG_d"), %%esi    \n\t" //src[xx+1]
        FAST_BILINEAR_X86
        "movw     %%si, 2(%%"REG_D", %%"REG_a", 2)  \n\t"
        "addw       %4, %%cx                 \n\t" //xalpha += xInc&0xFFFF
        "adc        %3, %%"REG_d"            \n\t" //xx+= xInc>>16 + carry


        "add        $2, %%"REG_a"            \n\t"
        "cmp        %2, %%"REG_a"            \n\t"
        " jb        1b                       \n\t"


        :: "r" (src), "m" (dst), "m" (dstWidth), "m" (xInc_shr16), "m" (xInc_mask)
        : "%"REG_a, "%"REG_d, "%ecx", "%"REG_D, "%esi"
    );
#if COMPILE_TEMPLATE_MMX2
    } //if MMX2 can't be used
#endif
#else
    int i;
    unsigned int xpos=0;
    for (i=0;i<dstWidth;i++) {
        register unsigned int xx=xpos>>16;
        register unsigned int xalpha=(xpos&0xFFFF)>>9;
        dst[i]= (src[xx]<<7) + (src[xx+1] - src[xx])*xalpha;
        xpos+=xInc;
    }
#endif /* ARCH_X86 */
}

      // *** horizontal scale Y line to temp buffer
static inline void RENAME(hyscale)(SwsContext *c, uint16_t *dst, long dstWidth, const uint8_t *src, int srcW, int xInc,
                                   const int16_t *hLumFilter,
                                   const int16_t *hLumFilterPos, int hLumFilterSize,
                                   uint8_t *formatConvBuffer,
                                   uint32_t *pal, int isAlpha)
{
    void (*toYV12)(uint8_t *, const uint8_t *, long, uint32_t *) = isAlpha ? c->alpToYV12 : c->lumToYV12;
    void (*convertRange)(uint16_t *, int) = isAlpha ? NULL : c->lumConvertRange;

    src += isAlpha ? c->alpSrcOffset : c->lumSrcOffset;

    if (toYV12) {
        toYV12(formatConvBuffer, src, srcW, pal);
        src= formatConvBuffer;
    }

    if (!c->hyscale_fast) {
        c->hScale(dst, dstWidth, src, srcW, xInc, hLumFilter, hLumFilterPos, hLumFilterSize);
    } else { // fast bilinear upscale / crap downscale
        c->hyscale_fast(c, dst, dstWidth, src, srcW, xInc);
    }

    if (convertRange)
        convertRange(dst, dstWidth);
}

static inline void RENAME(hcscale_fast)(SwsContext *c, int16_t *dst,
                                        long dstWidth, const uint8_t *src1,
                                        const uint8_t *src2, int srcW, int xInc)
{
#if ARCH_X86 && CONFIG_GPL
#if COMPILE_TEMPLATE_MMX2
    int32_t *filterPos = c->hChrFilterPos;
    int16_t *filter    = c->hChrFilter;
    int     canMMX2BeUsed  = c->canMMX2BeUsed;
    void    *mmx2FilterCode= c->chrMmx2FilterCode;
    int i;
#if defined(PIC)
    DECLARE_ALIGNED(8, uint64_t, ebxsave);
#endif
    if (canMMX2BeUsed) {
        __asm__ volatile(
#if defined(PIC)
            "mov          %%"REG_b", %6         \n\t"
#endif
            "pxor             %%mm7, %%mm7      \n\t"
            "mov                 %0, %%"REG_c"  \n\t"
            "mov                 %1, %%"REG_D"  \n\t"
            "mov                 %2, %%"REG_d"  \n\t"
            "mov                 %3, %%"REG_b"  \n\t"
            "xor          %%"REG_a", %%"REG_a"  \n\t" // i
            PREFETCH"   (%%"REG_c")             \n\t"
            PREFETCH" 32(%%"REG_c")             \n\t"
            PREFETCH" 64(%%"REG_c")             \n\t"

            CALL_MMX2_FILTER_CODE
            CALL_MMX2_FILTER_CODE
            CALL_MMX2_FILTER_CODE
            CALL_MMX2_FILTER_CODE
            "xor          %%"REG_a", %%"REG_a"  \n\t" // i
            "mov                 %5, %%"REG_c"  \n\t" // src
            "mov                 %1, %%"REG_D"  \n\t" // buf1
            "add              $"AV_STRINGIFY(VOF)", %%"REG_D"  \n\t"
            PREFETCH"   (%%"REG_c")             \n\t"
            PREFETCH" 32(%%"REG_c")             \n\t"
            PREFETCH" 64(%%"REG_c")             \n\t"

            CALL_MMX2_FILTER_CODE
            CALL_MMX2_FILTER_CODE
            CALL_MMX2_FILTER_CODE
            CALL_MMX2_FILTER_CODE

#if defined(PIC)
            "mov %6, %%"REG_b"    \n\t"
#endif
            :: "m" (src1), "m" (dst), "m" (filter), "m" (filterPos),
            "m" (mmx2FilterCode), "m" (src2)
#if defined(PIC)
            ,"m" (ebxsave)
#endif
            : "%"REG_a, "%"REG_c, "%"REG_d, "%"REG_S, "%"REG_D
#if !defined(PIC)
            ,"%"REG_b
#endif
        );
        for (i=dstWidth-1; (i*xInc)>>16 >=srcW-1; i--) {
            //printf("%d %d %d\n", dstWidth, i, srcW);
            dst[i] = src1[srcW-1]*128;
            dst[i+VOFW] = src2[srcW-1]*128;
        }
    } else {
#endif /* COMPILE_TEMPLATE_MMX2 */
        x86_reg xInc_shr16 = (x86_reg) (xInc >> 16);
        uint16_t xInc_mask = xInc & 0xffff;
        __asm__ volatile(
            "xor %%"REG_a", %%"REG_a"               \n\t" // i
            "xor %%"REG_d", %%"REG_d"               \n\t" // xx
            "xorl    %%ecx, %%ecx                   \n\t" // xalpha
            ASMALIGN(4)
            "1:                                     \n\t"
            "mov        %0, %%"REG_S"               \n\t"
            "movzbl  (%%"REG_S", %%"REG_d"), %%edi  \n\t" //src[xx]
            "movzbl 1(%%"REG_S", %%"REG_d"), %%esi  \n\t" //src[xx+1]
            FAST_BILINEAR_X86
            "movw     %%si, (%%"REG_D", %%"REG_a", 2)   \n\t"

            "movzbl    (%5, %%"REG_d"), %%edi       \n\t" //src[xx]
            "movzbl   1(%5, %%"REG_d"), %%esi       \n\t" //src[xx+1]
            FAST_BILINEAR_X86
            "movw     %%si, "AV_STRINGIFY(VOF)"(%%"REG_D", %%"REG_a", 2)   \n\t"

            "addw       %4, %%cx                    \n\t" //xalpha += xInc&0xFFFF
            "adc        %3, %%"REG_d"               \n\t" //xx+= xInc>>16 + carry
            "add        $1, %%"REG_a"               \n\t"
            "cmp        %2, %%"REG_a"               \n\t"
            " jb        1b                          \n\t"

/* GCC 3.3 makes MPlayer crash on IA-32 machines when using "g" operand here,
which is needed to support GCC 4.0. */
#if ARCH_X86_64 && AV_GCC_VERSION_AT_LEAST(3,4)
            :: "m" (src1), "m" (dst), "g" (dstWidth), "m" (xInc_shr16), "m" (xInc_mask),
#else
            :: "m" (src1), "m" (dst), "m" (dstWidth), "m" (xInc_shr16), "m" (xInc_mask),
#endif
            "r" (src2)
            : "%"REG_a, "%"REG_d, "%ecx", "%"REG_D, "%esi"
        );
#if COMPILE_TEMPLATE_MMX2
    } //if MMX2 can't be used
#endif
#else
    int i;
    unsigned int xpos=0;
    for (i=0;i<dstWidth;i++) {
        register unsigned int xx=xpos>>16;
        register unsigned int xalpha=(xpos&0xFFFF)>>9;
        dst[i]=(src1[xx]*(xalpha^127)+src1[xx+1]*xalpha);
        dst[i+VOFW]=(src2[xx]*(xalpha^127)+src2[xx+1]*xalpha);
        /* slower
        dst[i]= (src1[xx]<<7) + (src1[xx+1] - src1[xx])*xalpha;
        dst[i+VOFW]=(src2[xx]<<7) + (src2[xx+1] - src2[xx])*xalpha;
        */
        xpos+=xInc;
    }
#endif /* ARCH_X86 */
}

inline static void RENAME(hcscale)(SwsContext *c, uint16_t *dst, long dstWidth, const uint8_t *src1, const uint8_t *src2,
                                   int srcW, int xInc, const int16_t *hChrFilter,
                                   const int16_t *hChrFilterPos, int hChrFilterSize,
                                   uint8_t *formatConvBuffer,
                                   uint32_t *pal)
{

    src1 += c->chrSrcOffset;
    src2 += c->chrSrcOffset;

    if (c->chrToYV12) {
        c->chrToYV12(formatConvBuffer, formatConvBuffer+VOFW, src1, src2, srcW, pal);
        src1= formatConvBuffer;
        src2= formatConvBuffer+VOFW;
    }

    if (!c->hcscale_fast) {
        c->hScale(dst     , dstWidth, src1, srcW, xInc, hChrFilter, hChrFilterPos, hChrFilterSize);
        c->hScale(dst+VOFW, dstWidth, src2, srcW, xInc, hChrFilter, hChrFilterPos, hChrFilterSize);
    } else { // fast bilinear upscale / crap downscale
        c->hcscale_fast(c, dst, dstWidth, src1, src2, srcW, xInc);
    }

    if (c->chrConvertRange)
        c->chrConvertRange(dst, dstWidth);
}

#define DEBUG_SWSCALE_BUFFERS 0
#define DEBUG_BUFFERS(...) if (DEBUG_SWSCALE_BUFFERS) av_log(c, AV_LOG_DEBUG, __VA_ARGS__)

static int RENAME(swScale)(SwsContext *c, const uint8_t* src[], int srcStride[], int srcSliceY,
                           int srcSliceH, uint8_t* dst[], int dstStride[])
{
    /* load a few things into local vars to make the code more readable? and faster */
    const int srcW= c->srcW;
    const int dstW= c->dstW;
    const int dstH= c->dstH;
    const int chrDstW= c->chrDstW;
    const int chrSrcW= c->chrSrcW;
    const int lumXInc= c->lumXInc;
    const int chrXInc= c->chrXInc;
    const enum PixelFormat dstFormat= c->dstFormat;
    const int flags= c->flags;
    int16_t *vLumFilterPos= c->vLumFilterPos;
    int16_t *vChrFilterPos= c->vChrFilterPos;
    int16_t *hLumFilterPos= c->hLumFilterPos;
    int16_t *hChrFilterPos= c->hChrFilterPos;
    int16_t *vLumFilter= c->vLumFilter;
    int16_t *vChrFilter= c->vChrFilter;
    int16_t *hLumFilter= c->hLumFilter;
    int16_t *hChrFilter= c->hChrFilter;
    int32_t *lumMmxFilter= c->lumMmxFilter;
    int32_t *chrMmxFilter= c->chrMmxFilter;
    int32_t av_unused *alpMmxFilter= c->alpMmxFilter;
    const int vLumFilterSize= c->vLumFilterSize;
    const int vChrFilterSize= c->vChrFilterSize;
    const int hLumFilterSize= c->hLumFilterSize;
    const int hChrFilterSize= c->hChrFilterSize;
    int16_t **lumPixBuf= c->lumPixBuf;
    int16_t **chrPixBuf= c->chrPixBuf;
    int16_t **alpPixBuf= c->alpPixBuf;
    const int vLumBufSize= c->vLumBufSize;
    const int vChrBufSize= c->vChrBufSize;
    uint8_t *formatConvBuffer= c->formatConvBuffer;
    const int chrSrcSliceY= srcSliceY >> c->chrSrcVSubSample;
    const int chrSrcSliceH= -((-srcSliceH) >> c->chrSrcVSubSample);
    int lastDstY;
    uint32_t *pal=c->pal_yuv;

    /* vars which will change and which we need to store back in the context */
    int dstY= c->dstY;
    int lumBufIndex= c->lumBufIndex;
    int chrBufIndex= c->chrBufIndex;
    int lastInLumBuf= c->lastInLumBuf;
    int lastInChrBuf= c->lastInChrBuf;

    if (isPacked(c->srcFormat)) {
        src[0]=
        src[1]=
        src[2]=
        src[3]= src[0];
        srcStride[0]=
        srcStride[1]=
        srcStride[2]=
        srcStride[3]= srcStride[0];
    }
    srcStride[1]<<= c->vChrDrop;
    srcStride[2]<<= c->vChrDrop;

    DEBUG_BUFFERS("swScale() %p[%d] %p[%d] %p[%d] %p[%d] -> %p[%d] %p[%d] %p[%d] %p[%d]\n",
                  src[0], srcStride[0], src[1], srcStride[1], src[2], srcStride[2], src[3], srcStride[3],
                  dst[0], dstStride[0], dst[1], dstStride[1], dst[2], dstStride[2], dst[3], dstStride[3]);
    DEBUG_BUFFERS("srcSliceY: %d srcSliceH: %d dstY: %d dstH: %d\n",
                   srcSliceY,    srcSliceH,    dstY,    dstH);
    DEBUG_BUFFERS("vLumFilterSize: %d vLumBufSize: %d vChrFilterSize: %d vChrBufSize: %d\n",
                   vLumFilterSize,    vLumBufSize,    vChrFilterSize,    vChrBufSize);

    if (dstStride[0]%8 !=0 || dstStride[1]%8 !=0 || dstStride[2]%8 !=0 || dstStride[3]%8 != 0) {
        static int warnedAlready=0; //FIXME move this into the context perhaps
        if (flags & SWS_PRINT_INFO && !warnedAlready) {
            av_log(c, AV_LOG_WARNING, "Warning: dstStride is not aligned!\n"
                   "         ->cannot do aligned memory accesses anymore\n");
            warnedAlready=1;
        }
    }

    /* Note the user might start scaling the picture in the middle so this
       will not get executed. This is not really intended but works
       currently, so people might do it. */
    if (srcSliceY ==0) {
        lumBufIndex=-1;
        chrBufIndex=-1;
        dstY=0;
        lastInLumBuf= -1;
        lastInChrBuf= -1;
    }

    lastDstY= dstY;

    for (;dstY < dstH; dstY++) {
        unsigned char *dest =dst[0]+dstStride[0]*dstY;
        const int chrDstY= dstY>>c->chrDstVSubSample;
        unsigned char *uDest=dst[1]+dstStride[1]*chrDstY;
        unsigned char *vDest=dst[2]+dstStride[2]*chrDstY;
        unsigned char *aDest=(CONFIG_SWSCALE_ALPHA && alpPixBuf) ? dst[3]+dstStride[3]*dstY : NULL;

        const int firstLumSrcY= vLumFilterPos[dstY]; //First line needed as input
        const int firstChrSrcY= vChrFilterPos[chrDstY]; //First line needed as input
        int lastLumSrcY= firstLumSrcY + vLumFilterSize -1; // Last line needed as input
        int lastChrSrcY= firstChrSrcY + vChrFilterSize -1; // Last line needed as input
        int enough_lines;

        //handle holes (FAST_BILINEAR & weird filters)
        if (firstLumSrcY > lastInLumBuf) lastInLumBuf= firstLumSrcY-1;
        if (firstChrSrcY > lastInChrBuf) lastInChrBuf= firstChrSrcY-1;
        assert(firstLumSrcY >= lastInLumBuf - vLumBufSize + 1);
        assert(firstChrSrcY >= lastInChrBuf - vChrBufSize + 1);

        // Do we have enough lines in this slice to output the dstY line
        enough_lines = lastLumSrcY < srcSliceY + srcSliceH && lastChrSrcY < -((-srcSliceY - srcSliceH)>>c->chrSrcVSubSample);
        if (!enough_lines) {
            lastLumSrcY = srcSliceY + srcSliceH - 1;
            lastChrSrcY = chrSrcSliceY + chrSrcSliceH - 1;
        }

        DEBUG_BUFFERS("dstY: %d\n", dstY);
        DEBUG_BUFFERS("\tfirstLumSrcY: %d lastLumSrcY: %d lastInLumBuf: %d\n",
                         firstLumSrcY,    lastLumSrcY,    lastInLumBuf);
        DEBUG_BUFFERS("\tfirstChrSrcY: %d lastChrSrcY: %d lastInChrBuf: %d\n",
                         firstChrSrcY,    lastChrSrcY,    lastInChrBuf);

        //Do horizontal scaling
        while(lastInLumBuf < lastLumSrcY) {
            const uint8_t *src1= src[0]+(lastInLumBuf + 1 - srcSliceY)*srcStride[0];
            const uint8_t *src2= src[3]+(lastInLumBuf + 1 - srcSliceY)*srcStride[3];
            lumBufIndex++;
            DEBUG_BUFFERS("\t\tlumBufIndex %d: lastInLumBuf: %d\n",
                               lumBufIndex,    lastInLumBuf);
            assert(lumBufIndex < 2*vLumBufSize);
            assert(lastInLumBuf + 1 - srcSliceY < srcSliceH);
            assert(lastInLumBuf + 1 - srcSliceY >= 0);
            RENAME(hyscale)(c, lumPixBuf[ lumBufIndex ], dstW, src1, srcW, lumXInc,
                            hLumFilter, hLumFilterPos, hLumFilterSize,
                            formatConvBuffer,
                            pal, 0);
            if (CONFIG_SWSCALE_ALPHA && alpPixBuf)
                RENAME(hyscale)(c, alpPixBuf[ lumBufIndex ], dstW, src2, srcW, lumXInc,
                                hLumFilter, hLumFilterPos, hLumFilterSize,
                                formatConvBuffer,
                                pal, 1);
            lastInLumBuf++;
        }
        while(lastInChrBuf < lastChrSrcY) {
            const uint8_t *src1= src[1]+(lastInChrBuf + 1 - chrSrcSliceY)*srcStride[1];
            const uint8_t *src2= src[2]+(lastInChrBuf + 1 - chrSrcSliceY)*srcStride[2];
            chrBufIndex++;
            DEBUG_BUFFERS("\t\tchrBufIndex %d: lastInChrBuf: %d\n",
                               chrBufIndex,    lastInChrBuf);
            assert(chrBufIndex < 2*vChrBufSize);
            assert(lastInChrBuf + 1 - chrSrcSliceY < (chrSrcSliceH));
            assert(lastInChrBuf + 1 - chrSrcSliceY >= 0);
            //FIXME replace parameters through context struct (some at least)

            if (c->needs_hcscale)
                RENAME(hcscale)(c, chrPixBuf[ chrBufIndex ], chrDstW, src1, src2, chrSrcW, chrXInc,
                                hChrFilter, hChrFilterPos, hChrFilterSize,
                                formatConvBuffer,
                                pal);
            lastInChrBuf++;
        }
        //wrap buf index around to stay inside the ring buffer
        if (lumBufIndex >= vLumBufSize) lumBufIndex-= vLumBufSize;
        if (chrBufIndex >= vChrBufSize) chrBufIndex-= vChrBufSize;
        if (!enough_lines)
            break; //we can't output a dstY line so let's try with the next slice

#if COMPILE_TEMPLATE_MMX
        c->blueDither= ff_dither8[dstY&1];
        if (c->dstFormat == PIX_FMT_RGB555 || c->dstFormat == PIX_FMT_BGR555)
            c->greenDither= ff_dither8[dstY&1];
        else
            c->greenDither= ff_dither4[dstY&1];
        c->redDither= ff_dither8[(dstY+1)&1];
#endif
        if (dstY < dstH-2) {
            const int16_t **lumSrcPtr= (const int16_t **) lumPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize;
            const int16_t **chrSrcPtr= (const int16_t **) chrPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize;
            const int16_t **alpSrcPtr= (CONFIG_SWSCALE_ALPHA && alpPixBuf) ? (const int16_t **) alpPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize : NULL;
#if COMPILE_TEMPLATE_MMX
            int i;
            if (flags & SWS_ACCURATE_RND) {
                int s= APCK_SIZE / 8;
                for (i=0; i<vLumFilterSize; i+=2) {
                    *(const void**)&lumMmxFilter[s*i              ]= lumSrcPtr[i  ];
                    *(const void**)&lumMmxFilter[s*i+APCK_PTR2/4  ]= lumSrcPtr[i+(vLumFilterSize>1)];
                              lumMmxFilter[s*i+APCK_COEF/4  ]=
                              lumMmxFilter[s*i+APCK_COEF/4+1]= vLumFilter[dstY*vLumFilterSize + i    ]
                        + (vLumFilterSize>1 ? vLumFilter[dstY*vLumFilterSize + i + 1]<<16 : 0);
                    if (CONFIG_SWSCALE_ALPHA && alpPixBuf) {
                        *(const void**)&alpMmxFilter[s*i              ]= alpSrcPtr[i  ];
                        *(const void**)&alpMmxFilter[s*i+APCK_PTR2/4  ]= alpSrcPtr[i+(vLumFilterSize>1)];
                                  alpMmxFilter[s*i+APCK_COEF/4  ]=
                                  alpMmxFilter[s*i+APCK_COEF/4+1]= lumMmxFilter[s*i+APCK_COEF/4  ];
                    }
                }
                for (i=0; i<vChrFilterSize; i+=2) {
                    *(const void**)&chrMmxFilter[s*i              ]= chrSrcPtr[i  ];
                    *(const void**)&chrMmxFilter[s*i+APCK_PTR2/4  ]= chrSrcPtr[i+(vChrFilterSize>1)];
                              chrMmxFilter[s*i+APCK_COEF/4  ]=
                              chrMmxFilter[s*i+APCK_COEF/4+1]= vChrFilter[chrDstY*vChrFilterSize + i    ]
                        + (vChrFilterSize>1 ? vChrFilter[chrDstY*vChrFilterSize + i + 1]<<16 : 0);
                }
            } else {
                for (i=0; i<vLumFilterSize; i++) {
                    lumMmxFilter[4*i+0]= (int32_t)lumSrcPtr[i];
                    lumMmxFilter[4*i+1]= (uint64_t)lumSrcPtr[i] >> 32;
                    lumMmxFilter[4*i+2]=
                    lumMmxFilter[4*i+3]=
                        ((uint16_t)vLumFilter[dstY*vLumFilterSize + i])*0x10001;
                    if (CONFIG_SWSCALE_ALPHA && alpPixBuf) {
                        alpMmxFilter[4*i+0]= (int32_t)alpSrcPtr[i];
                        alpMmxFilter[4*i+1]= (uint64_t)alpSrcPtr[i] >> 32;
                        alpMmxFilter[4*i+2]=
                        alpMmxFilter[4*i+3]= lumMmxFilter[4*i+2];
                    }
                }
                for (i=0; i<vChrFilterSize; i++) {
                    chrMmxFilter[4*i+0]= (int32_t)chrSrcPtr[i];
                    chrMmxFilter[4*i+1]= (uint64_t)chrSrcPtr[i] >> 32;
                    chrMmxFilter[4*i+2]=
                    chrMmxFilter[4*i+3]=
                        ((uint16_t)vChrFilter[chrDstY*vChrFilterSize + i])*0x10001;
                }
            }
#endif
            if (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21) {
                const int chrSkipMask= (1<<c->chrDstVSubSample)-1;
                if (dstY&chrSkipMask) uDest= NULL; //FIXME split functions in lumi / chromi
                c->yuv2nv12X(c,
                             vLumFilter+dstY*vLumFilterSize   , lumSrcPtr, vLumFilterSize,
                             vChrFilter+chrDstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
                             dest, uDest, dstW, chrDstW, dstFormat);
            } else if (isPlanarYUV(dstFormat) || dstFormat==PIX_FMT_GRAY8) { //YV12 like
                const int chrSkipMask= (1<<c->chrDstVSubSample)-1;
                if ((dstY&chrSkipMask) || isGray(dstFormat)) uDest=vDest= NULL; //FIXME split functions in lumi / chromi
                if (is16BPS(dstFormat)) {
                    yuv2yuvX16inC(
                                  vLumFilter+dstY*vLumFilterSize   , lumSrcPtr, vLumFilterSize,
                                  vChrFilter+chrDstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
                                  alpSrcPtr, (uint16_t *) dest, (uint16_t *) uDest, (uint16_t *) vDest, (uint16_t *) aDest, dstW, chrDstW,
                                  dstFormat);
                } else if (vLumFilterSize == 1 && vChrFilterSize == 1) { // unscaled YV12
                    const int16_t *lumBuf = lumSrcPtr[0];
                    const int16_t *chrBuf= chrSrcPtr[0];
                    const int16_t *alpBuf= (CONFIG_SWSCALE_ALPHA && alpPixBuf) ? alpSrcPtr[0] : NULL;
                    c->yuv2yuv1(c, lumBuf, chrBuf, alpBuf, dest, uDest, vDest, aDest, dstW, chrDstW);
                } else { //General YV12
                    c->yuv2yuvX(c,
                                vLumFilter+dstY*vLumFilterSize   , lumSrcPtr, vLumFilterSize,
                                vChrFilter+chrDstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
                                alpSrcPtr, dest, uDest, vDest, aDest, dstW, chrDstW);
                }
            } else {
                assert(lumSrcPtr + vLumFilterSize - 1 < lumPixBuf + vLumBufSize*2);
                assert(chrSrcPtr + vChrFilterSize - 1 < chrPixBuf + vChrBufSize*2);
                if (vLumFilterSize == 1 && vChrFilterSize == 2) { //unscaled RGB
                    int chrAlpha= vChrFilter[2*dstY+1];
                    if(flags & SWS_FULL_CHR_H_INT) {
                        yuv2rgbXinC_full(c, //FIXME write a packed1_full function
                                         vLumFilter+dstY*vLumFilterSize, lumSrcPtr, vLumFilterSize,
                                         vChrFilter+dstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
                                         alpSrcPtr, dest, dstW, dstY);
                    } else {
                        c->yuv2packed1(c, *lumSrcPtr, *chrSrcPtr, *(chrSrcPtr+1),
                                       alpPixBuf ? *alpSrcPtr : NULL,
                                       dest, dstW, chrAlpha, dstFormat, flags, dstY);
                    }
                } else if (vLumFilterSize == 2 && vChrFilterSize == 2) { //bilinear upscale RGB
                    int lumAlpha= vLumFilter[2*dstY+1];
                    int chrAlpha= vChrFilter[2*dstY+1];
                    lumMmxFilter[2]=
                    lumMmxFilter[3]= vLumFilter[2*dstY   ]*0x10001;
                    chrMmxFilter[2]=
                    chrMmxFilter[3]= vChrFilter[2*chrDstY]*0x10001;
                    if(flags & SWS_FULL_CHR_H_INT) {
                        yuv2rgbXinC_full(c, //FIXME write a packed2_full function
                                         vLumFilter+dstY*vLumFilterSize, lumSrcPtr, vLumFilterSize,
                                         vChrFilter+dstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
                                         alpSrcPtr, dest, dstW, dstY);
                    } else {
                        c->yuv2packed2(c, *lumSrcPtr, *(lumSrcPtr+1), *chrSrcPtr, *(chrSrcPtr+1),
                                       alpPixBuf ? *alpSrcPtr : NULL, alpPixBuf ? *(alpSrcPtr+1) : NULL,
                                       dest, dstW, lumAlpha, chrAlpha, dstY);
                    }
                } else { //general RGB
                    if(flags & SWS_FULL_CHR_H_INT) {
                        yuv2rgbXinC_full(c,
                                         vLumFilter+dstY*vLumFilterSize, lumSrcPtr, vLumFilterSize,
                                         vChrFilter+dstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
                                         alpSrcPtr, dest, dstW, dstY);
                    } else {
                        c->yuv2packedX(c,
                                       vLumFilter+dstY*vLumFilterSize, lumSrcPtr, vLumFilterSize,
                                       vChrFilter+dstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
                                       alpSrcPtr, dest, dstW, dstY);
                    }
                }
            }
        } else { // hmm looks like we can't use MMX here without overwriting this array's tail
            const int16_t **lumSrcPtr= (const int16_t **)lumPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize;
            const int16_t **chrSrcPtr= (const int16_t **)chrPixBuf + chrBufIndex + firstChrSrcY - lastInChrBuf + vChrBufSize;
            const int16_t **alpSrcPtr= (CONFIG_SWSCALE_ALPHA && alpPixBuf) ? (const int16_t **)alpPixBuf + lumBufIndex + firstLumSrcY - lastInLumBuf + vLumBufSize : NULL;
            if (dstFormat == PIX_FMT_NV12 || dstFormat == PIX_FMT_NV21) {
                const int chrSkipMask= (1<<c->chrDstVSubSample)-1;
                if (dstY&chrSkipMask) uDest= NULL; //FIXME split functions in lumi / chromi
                yuv2nv12XinC(
                             vLumFilter+dstY*vLumFilterSize   , lumSrcPtr, vLumFilterSize,
                             vChrFilter+chrDstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
                             dest, uDest, dstW, chrDstW, dstFormat);
            } else if (isPlanarYUV(dstFormat) || dstFormat==PIX_FMT_GRAY8) { //YV12
                const int chrSkipMask= (1<<c->chrDstVSubSample)-1;
                if ((dstY&chrSkipMask) || isGray(dstFormat)) uDest=vDest= NULL; //FIXME split functions in lumi / chromi
                if (is16BPS(dstFormat)) {
                    yuv2yuvX16inC(
                                  vLumFilter+dstY*vLumFilterSize   , lumSrcPtr, vLumFilterSize,
                                  vChrFilter+chrDstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
                                  alpSrcPtr, (uint16_t *) dest, (uint16_t *) uDest, (uint16_t *) vDest, (uint16_t *) aDest, dstW, chrDstW,
                                  dstFormat);
                } else {
                    yuv2yuvXinC(
                                vLumFilter+dstY*vLumFilterSize   , lumSrcPtr, vLumFilterSize,
                                vChrFilter+chrDstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
                                alpSrcPtr, dest, uDest, vDest, aDest, dstW, chrDstW);
                }
            } else {
                assert(lumSrcPtr + vLumFilterSize - 1 < lumPixBuf + vLumBufSize*2);
                assert(chrSrcPtr + vChrFilterSize - 1 < chrPixBuf + vChrBufSize*2);
                if(flags & SWS_FULL_CHR_H_INT) {
                    yuv2rgbXinC_full(c,
                                     vLumFilter+dstY*vLumFilterSize, lumSrcPtr, vLumFilterSize,
                                     vChrFilter+dstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
                                     alpSrcPtr, dest, dstW, dstY);
                } else {
                    yuv2packedXinC(c,
                                   vLumFilter+dstY*vLumFilterSize, lumSrcPtr, vLumFilterSize,
                                   vChrFilter+dstY*vChrFilterSize, chrSrcPtr, vChrFilterSize,
                                   alpSrcPtr, dest, dstW, dstY);
                }
            }
        }
    }

    if ((dstFormat == PIX_FMT_YUVA420P) && !alpPixBuf)
        fillPlane(dst[3], dstStride[3], dstW, dstY-lastDstY, lastDstY, 255);

#if COMPILE_TEMPLATE_MMX
    if (flags & SWS_CPU_CAPS_MMX2 )  __asm__ volatile("sfence":::"memory");
    /* On K6 femms is faster than emms. On K7 femms is directly mapped to emms. */
    if (flags & SWS_CPU_CAPS_3DNOW)  __asm__ volatile("femms" :::"memory");
    else                             __asm__ volatile("emms"  :::"memory");
#endif
    /* store changed local vars back in the context */
    c->dstY= dstY;
    c->lumBufIndex= lumBufIndex;
    c->chrBufIndex= chrBufIndex;
    c->lastInLumBuf= lastInLumBuf;
    c->lastInChrBuf= lastInChrBuf;

    return dstY - lastDstY;
}

static void RENAME(sws_init_swScale)(SwsContext *c)
{
    enum PixelFormat srcFormat = c->srcFormat;

    c->yuv2nv12X    = RENAME(yuv2nv12X   );
    c->yuv2yuv1     = RENAME(yuv2yuv1    );
    c->yuv2yuvX     = RENAME(yuv2yuvX    );
    c->yuv2packed1  = RENAME(yuv2packed1 );
    c->yuv2packed2  = RENAME(yuv2packed2 );
    c->yuv2packedX  = RENAME(yuv2packedX );

    c->hScale       = RENAME(hScale      );

#if COMPILE_TEMPLATE_MMX
    // Use the new MMX scaler if the MMX2 one can't be used (it is faster than the x86 ASM one).
    if (c->flags & SWS_FAST_BILINEAR && c->canMMX2BeUsed)
#else
    if (c->flags & SWS_FAST_BILINEAR)
#endif
    {
        c->hyscale_fast = RENAME(hyscale_fast);
        c->hcscale_fast = RENAME(hcscale_fast);
    }

    c->chrToYV12 = NULL;
    switch(srcFormat) {
        case PIX_FMT_YUYV422  : c->chrToYV12 = RENAME(yuy2ToUV); break;
        case PIX_FMT_UYVY422  : c->chrToYV12 = RENAME(uyvyToUV); break;
        case PIX_FMT_NV12     : c->chrToYV12 = RENAME(nv12ToUV); break;
        case PIX_FMT_NV21     : c->chrToYV12 = RENAME(nv21ToUV); break;
        case PIX_FMT_RGB8     :
        case PIX_FMT_BGR8     :
        case PIX_FMT_PAL8     :
        case PIX_FMT_BGR4_BYTE:
        case PIX_FMT_RGB4_BYTE: c->chrToYV12 = palToUV; break;
        case PIX_FMT_YUV420P16BE:
        case PIX_FMT_YUV422P16BE:
        case PIX_FMT_YUV444P16BE: c->chrToYV12 = RENAME(BEToUV); break;
        case PIX_FMT_YUV420P16LE:
        case PIX_FMT_YUV422P16LE:
        case PIX_FMT_YUV444P16LE: c->chrToYV12 = RENAME(LEToUV); break;
    }
    if (c->chrSrcHSubSample) {
        switch(srcFormat) {
        case PIX_FMT_RGB48BE:
        case PIX_FMT_RGB48LE: c->chrToYV12 = rgb48ToUV_half; break;
        case PIX_FMT_RGB32  :
        case PIX_FMT_RGB32_1: c->chrToYV12 = bgr32ToUV_half; break;
        case PIX_FMT_BGR24  : c->chrToYV12 = RENAME(bgr24ToUV_half); break;
        case PIX_FMT_BGR565 : c->chrToYV12 = bgr16ToUV_half; break;
        case PIX_FMT_BGR555 : c->chrToYV12 = bgr15ToUV_half; break;
        case PIX_FMT_BGR32  :
        case PIX_FMT_BGR32_1: c->chrToYV12 = rgb32ToUV_half; break;
        case PIX_FMT_RGB24  : c->chrToYV12 = RENAME(rgb24ToUV_half); break;
        case PIX_FMT_RGB565 : c->chrToYV12 = rgb16ToUV_half; break;
        case PIX_FMT_RGB555 : c->chrToYV12 = rgb15ToUV_half; break;
        }
    } else {
        switch(srcFormat) {
        case PIX_FMT_RGB48BE:
        case PIX_FMT_RGB48LE: c->chrToYV12 = rgb48ToUV; break;
        case PIX_FMT_RGB32  :
        case PIX_FMT_RGB32_1: c->chrToYV12 = bgr32ToUV; break;
        case PIX_FMT_BGR24  : c->chrToYV12 = RENAME(bgr24ToUV); break;
        case PIX_FMT_BGR565 : c->chrToYV12 = bgr16ToUV; break;
        case PIX_FMT_BGR555 : c->chrToYV12 = bgr15ToUV; break;
        case PIX_FMT_BGR32  :
        case PIX_FMT_BGR32_1: c->chrToYV12 = rgb32ToUV; break;
        case PIX_FMT_RGB24  : c->chrToYV12 = RENAME(rgb24ToUV); break;
        case PIX_FMT_RGB565 : c->chrToYV12 = rgb16ToUV; break;
        case PIX_FMT_RGB555 : c->chrToYV12 = rgb15ToUV; break;
        }
    }

    c->lumToYV12 = NULL;
    c->alpToYV12 = NULL;
    switch (srcFormat) {
    case PIX_FMT_YUYV422  :
    case PIX_FMT_YUV420P16BE:
    case PIX_FMT_YUV422P16BE:
    case PIX_FMT_YUV444P16BE:
    case PIX_FMT_GRAY16BE : c->lumToYV12 = RENAME(yuy2ToY); break;
    case PIX_FMT_UYVY422  :
    case PIX_FMT_YUV420P16LE:
    case PIX_FMT_YUV422P16LE:
    case PIX_FMT_YUV444P16LE:
    case PIX_FMT_GRAY16LE : c->lumToYV12 = RENAME(uyvyToY); break;
    case PIX_FMT_BGR24    : c->lumToYV12 = RENAME(bgr24ToY); break;
    case PIX_FMT_BGR565   : c->lumToYV12 = bgr16ToY; break;
    case PIX_FMT_BGR555   : c->lumToYV12 = bgr15ToY; break;
    case PIX_FMT_RGB24    : c->lumToYV12 = RENAME(rgb24ToY); break;
    case PIX_FMT_RGB565   : c->lumToYV12 = rgb16ToY; break;
    case PIX_FMT_RGB555   : c->lumToYV12 = rgb15ToY; break;
    case PIX_FMT_RGB8     :
    case PIX_FMT_BGR8     :
    case PIX_FMT_PAL8     :
    case PIX_FMT_BGR4_BYTE:
    case PIX_FMT_RGB4_BYTE: c->lumToYV12 = palToY; break;
    case PIX_FMT_MONOBLACK: c->lumToYV12 = monoblack2Y; break;
    case PIX_FMT_MONOWHITE: c->lumToYV12 = monowhite2Y; break;
    case PIX_FMT_RGB32  :
    case PIX_FMT_RGB32_1: c->lumToYV12 = bgr32ToY; break;
    case PIX_FMT_BGR32  :
    case PIX_FMT_BGR32_1: c->lumToYV12 = rgb32ToY; break;
    case PIX_FMT_RGB48BE:
    case PIX_FMT_RGB48LE: c->lumToYV12 = rgb48ToY; break;
    }
    if (c->alpPixBuf) {
        switch (srcFormat) {
        case PIX_FMT_RGB32  :
        case PIX_FMT_RGB32_1:
        case PIX_FMT_BGR32  :
        case PIX_FMT_BGR32_1: c->alpToYV12 = abgrToA; break;
        }
    }

    switch (srcFormat) {
    case PIX_FMT_RGB32  :
    case PIX_FMT_BGR32  :
        c->alpSrcOffset = 3;
        break;
    case PIX_FMT_RGB32_1:
    case PIX_FMT_BGR32_1:
        c->lumSrcOffset = ALT32_CORR;
        c->chrSrcOffset = ALT32_CORR;
        break;
    case PIX_FMT_RGB48LE:
        c->lumSrcOffset = 1;
        c->chrSrcOffset = 1;
        c->alpSrcOffset = 1;
        break;
    }

    if (c->srcRange != c->dstRange && !isAnyRGB(c->dstFormat)) {
        if (c->srcRange) {
            c->lumConvertRange = RENAME(lumRangeFromJpeg);
            c->chrConvertRange = RENAME(chrRangeFromJpeg);
        } else {
            c->lumConvertRange = RENAME(lumRangeToJpeg);
            c->chrConvertRange = RENAME(chrRangeToJpeg);
        }
    }

    if (!(isGray(srcFormat) || isGray(c->dstFormat) ||
          srcFormat == PIX_FMT_MONOBLACK || srcFormat == PIX_FMT_MONOWHITE))
        c->needs_hcscale = 1;
}