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ffmpeg / libswscale / x86 / yuv2rgb_template2.c @ f4ea7c89

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/*
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 * software YUV to RGB converter
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 *
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 * Copyright (C) 2001-2007 Michael Niedermayer
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 *           (c) 2010 Konstantin Shishkov
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#undef MOVNTQ
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#undef EMMS
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#undef SFENCE
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#if HAVE_AMD3DNOW
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/* On K6 femms is faster than emms. On K7 femms is directly mapped to emms. */
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#define EMMS   "femms"
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#else
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#define EMMS   "emms"
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#endif
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#if HAVE_MMX2
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#define MOVNTQ "movntq"
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#define SFENCE "sfence"
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#else
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#define MOVNTQ "movq"
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#define SFENCE " # nop"
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#endif
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#define REG_BLUE  "0"
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#define REG_RED   "1"
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#define REG_GREEN "2"
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#define REG_ALPHA "3"
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#define YUV2RGB_LOOP(depth)                                          \
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    h_size = (c->dstW + 7) & ~7;                                     \
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    if (h_size * depth > FFABS(dstStride[0]))                        \
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        h_size -= 8;                                                 \
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                                                                     \
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    if (c->srcFormat == PIX_FMT_YUV422P) {                           \
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        srcStride[1] *= 2;                                           \
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        srcStride[2] *= 2;                                           \
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    }                                                                \
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                                                                     \
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    __asm__ volatile ("pxor %mm4, %mm4\n\t");                        \
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    for (y = 0; y < srcSliceH; y++) {                                \
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        uint8_t *image    = dst[0] + (y + srcSliceY) * dstStride[0]; \
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        const uint8_t *py = src[0] +               y * srcStride[0]; \
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        const uint8_t *pu = src[1] +        (y >> 1) * srcStride[1]; \
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        const uint8_t *pv = src[2] +        (y >> 1) * srcStride[2]; \
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        x86_reg index = -h_size / 2;                                 \
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#define YUV2RGB_INITIAL_LOAD          \
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    __asm__ volatile (                \
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        "movq (%5, %0, 2), %%mm6\n\t" \
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        "movd    (%2, %0), %%mm0\n\t" \
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        "movd    (%3, %0), %%mm1\n\t" \
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        "1: \n\t"                     \
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/* YUV2RGB core
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 * Conversion is performed in usual way:
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 * R = Y' * Ycoef + Vred * V'
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 * G = Y' * Ycoef + Vgreen * V' + Ugreen * U'
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 * B = Y' * Ycoef               + Ublue * U'
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 *
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 * where X' = X * 8 - Xoffset (multiplication is performed to increase
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 * precision a bit).
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 * Since it operates in YUV420 colorspace, Y component is additionally
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 * split into Y1 and Y2 for even and odd pixels.
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 *
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 * Input:
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 * mm0 - U (4 elems), mm1 - V (4 elems), mm6 - Y (8 elems), mm4 - zero register
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 * Output:
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 * mm1 - R, mm2 - G, mm0 - B
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 */
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#define YUV2RGB                                  \
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    /* convert Y, U, V into Y1', Y2', U', V' */  \
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    "movq      %%mm6, %%mm7\n\t"                 \
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    "punpcklbw %%mm4, %%mm0\n\t"                 \
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    "punpcklbw %%mm4, %%mm1\n\t"                 \
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    "pand     "MANGLE(mmx_00ffw)", %%mm6\n\t"    \
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    "psrlw     $8,    %%mm7\n\t"                 \
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    "psllw     $3,    %%mm0\n\t"                 \
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    "psllw     $3,    %%mm1\n\t"                 \
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    "psllw     $3,    %%mm6\n\t"                 \
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    "psllw     $3,    %%mm7\n\t"                 \
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    "psubsw   "U_OFFSET"(%4), %%mm0\n\t"         \
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    "psubsw   "V_OFFSET"(%4), %%mm1\n\t"         \
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    "psubw    "Y_OFFSET"(%4), %%mm6\n\t"         \
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    "psubw    "Y_OFFSET"(%4), %%mm7\n\t"         \
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\
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     /* multiply by coefficients */              \
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    "movq      %%mm0, %%mm2\n\t"                 \
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    "movq      %%mm1, %%mm3\n\t"                 \
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    "pmulhw   "UG_COEFF"(%4), %%mm2\n\t"         \
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    "pmulhw   "VG_COEFF"(%4), %%mm3\n\t"         \
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    "pmulhw   "Y_COEFF" (%4), %%mm6\n\t"         \
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    "pmulhw   "Y_COEFF" (%4), %%mm7\n\t"         \
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    "pmulhw   "UB_COEFF"(%4), %%mm0\n\t"         \
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    "pmulhw   "VR_COEFF"(%4), %%mm1\n\t"         \
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    "paddsw    %%mm3, %%mm2\n\t"                 \
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    /* now: mm0 = UB, mm1 = VR, mm2 = CG */      \
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    /*      mm6 = Y1, mm7 = Y2 */                \
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\
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    /* produce RGB */                            \
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    "movq      %%mm7, %%mm3\n\t"                 \
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    "movq      %%mm7, %%mm5\n\t"                 \
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    "paddsw    %%mm0, %%mm3\n\t"                 \
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    "paddsw    %%mm1, %%mm5\n\t"                 \
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    "paddsw    %%mm2, %%mm7\n\t"                 \
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    "paddsw    %%mm6, %%mm0\n\t"                 \
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    "paddsw    %%mm6, %%mm1\n\t"                 \
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    "paddsw    %%mm6, %%mm2\n\t"                 \
127
\
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    /* pack and interleave even/odd pixels */    \
129
    "packuswb  %%mm0, %%mm0\n\t"                 \
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    "packuswb  %%mm1, %%mm1\n\t"                 \
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    "packuswb  %%mm2, %%mm2\n\t"                 \
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    "packuswb  %%mm3, %%mm3\n\t"                 \
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    "packuswb  %%mm5, %%mm5\n\t"                 \
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    "packuswb  %%mm7, %%mm7\n\t"                 \
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    "punpcklbw %%mm3, %%mm0\n\t"                 \
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    "punpcklbw %%mm5, %%mm1\n\t"                 \
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    "punpcklbw %%mm7, %%mm2\n\t"                 \
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139
#define YUV2RGB_ENDLOOP(depth)                   \
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    "movq 8 (%5, %0, 2), %%mm6\n\t"              \
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    "movd 4 (%3, %0),    %%mm1\n\t"              \
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    "movd 4 (%2, %0),    %%mm0\n\t"              \
143
    "add $"AV_STRINGIFY(depth * 8)", %1\n\t"     \
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    "add  $4, %0\n\t"                            \
145
    "js   1b\n\t"                                \
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147
#define YUV2RGB_OPERANDS                                          \
148
        : "+r" (index), "+r" (image)                              \
149
        : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), \
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          "r" (py - 2*index)                                      \
151
        );                                                        \
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    }                                                             \
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154
#define YUV2RGB_OPERANDS_ALPHA                                    \
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        : "+r" (index), "+r" (image)                              \
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        : "r" (pu - index), "r" (pv - index), "r"(&c->redDither), \
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          "r" (py - 2*index), "r" (pa - 2*index)                  \
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        );                                                        \
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    }                                                             \
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161
#define YUV2RGB_ENDFUNC                          \
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    __asm__ volatile (SFENCE"\n\t"EMMS);         \
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    return srcSliceH;                            \
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165

    
166
#define RGB_PACK16(gmask, gshift, rshift)        \
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    "pand      "MANGLE(mmx_redmask)", %%mm0\n\t" \
168
    "pand      "MANGLE(mmx_redmask)", %%mm1\n\t" \
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    "psrlw     $3,        %%mm0\n\t"             \
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    "pand      "MANGLE(gmask)",       %%mm2\n\t" \
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    "movq      %%mm0,     %%mm5\n\t"             \
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    "movq      %%mm1,     %%mm6\n\t"             \
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    "movq      %%mm2,     %%mm7\n\t"             \
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    "punpcklbw %%mm4,     %%mm0\n\t"             \
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    "punpcklbw %%mm4,     %%mm1\n\t"             \
176
    "punpcklbw %%mm4,     %%mm2\n\t"             \
177
    "punpckhbw %%mm4,     %%mm5\n\t"             \
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    "punpckhbw %%mm4,     %%mm6\n\t"             \
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    "punpckhbw %%mm4,     %%mm7\n\t"             \
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    "psllw     $"rshift", %%mm1\n\t"             \
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    "psllw     $"rshift", %%mm6\n\t"             \
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    "psllw     $"gshift", %%mm2\n\t"             \
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    "psllw     $"gshift", %%mm7\n\t"             \
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    "por       %%mm1,     %%mm0\n\t"             \
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    "por       %%mm6,     %%mm5\n\t"             \
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    "por       %%mm2,     %%mm0\n\t"             \
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    "por       %%mm7,     %%mm5\n\t"             \
188
    MOVNTQ "   %%mm0,      (%1)\n\t"             \
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    MOVNTQ "   %%mm5,     8(%1)\n\t"             \
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191
#define DITHER_RGB                               \
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    "paddusb "BLUE_DITHER"(%4),  %%mm0\n\t"      \
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    "paddusb "GREEN_DITHER"(%4), %%mm2\n\t"      \
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    "paddusb "RED_DITHER"(%4),   %%mm1\n\t"      \
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196
static inline int RENAME(yuv420_rgb15)(SwsContext *c, const uint8_t *src[],
197
                                       int srcStride[],
198
                                       int srcSliceY, int srcSliceH,
199
                                       uint8_t *dst[], int dstStride[])
200
{
201
    int y, h_size;
202

    
203
    YUV2RGB_LOOP(2)
204

    
205
#ifdef DITHER1XBPP
206
        c->blueDither  = ff_dither8[y       & 1];
207
        c->greenDither = ff_dither8[y       & 1];
208
        c->redDither   = ff_dither8[(y + 1) & 1];
209
#endif
210

    
211
        YUV2RGB_INITIAL_LOAD
212
        YUV2RGB
213
#ifdef DITHER1XBPP
214
        DITHER_RGB
215
#endif
216
        RGB_PACK16(mmx_redmask, "2", "7")
217

    
218
    YUV2RGB_ENDLOOP(2)
219
    YUV2RGB_OPERANDS
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    YUV2RGB_ENDFUNC
221
}
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223
static inline int RENAME(yuv420_rgb16)(SwsContext *c, const uint8_t *src[],
224
                                       int srcStride[],
225
                                       int srcSliceY, int srcSliceH,
226
                                       uint8_t *dst[], int dstStride[])
227
{
228
    int y, h_size;
229

    
230
    YUV2RGB_LOOP(2)
231

    
232
#ifdef DITHER1XBPP
233
        c->blueDither  = ff_dither8[y       & 1];
234
        c->greenDither = ff_dither4[y       & 1];
235
        c->redDither   = ff_dither8[(y + 1) & 1];
236
#endif
237

    
238
        YUV2RGB_INITIAL_LOAD
239
        YUV2RGB
240
#ifdef DITHER1XBPP
241
        DITHER_RGB
242
#endif
243
        RGB_PACK16(mmx_grnmask, "3", "8")
244

    
245
    YUV2RGB_ENDLOOP(2)
246
    YUV2RGB_OPERANDS
247
    YUV2RGB_ENDFUNC
248
}
249

    
250

    
251
#define RGB_PACK24(red, blue)              \
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    /* generate first packed RGB octet */  \
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    "movq      %%mm2,      %%mm5\n\t"      \
254
    "movq      %%mm"blue", %%mm6\n\t"      \
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    "movq      %%mm"red",  %%mm7\n\t"      \
256
    "punpcklbw %%mm5,      %%mm6\n\t"      \
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    "punpcklbw %%mm4,      %%mm7\n\t"      \
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    "movq      %%mm6,      %%mm3\n\t"      \
259
    "punpcklwd %%mm7,      %%mm6\n\t"      \
260
    "psrlq     $32,        %%mm3\n\t"      \
261
    "movq      %%mm6,      %%mm5\n\t"      \
262
    "psllq     $40,        %%mm6\n\t"      \
263
    "psllq     $48,        %%mm3\n\t"      \
264
    "psrlq     $32,        %%mm5\n\t"      \
265
    "psrlq     $40,        %%mm6\n\t"      \
266
    "psllq     $24,        %%mm5\n\t"      \
267
    "por       %%mm3,      %%mm6\n\t"      \
268
    "por       %%mm5,      %%mm6\n\t"      \
269
    MOVNTQ "   %%mm6,      (%1)\n\t"       \
270
\
271
    /* generate second packed RGB octet */ \
272
    "movq      %%mm"red",  %%mm7\n\t"      \
273
    "movq      %%mm2,      %%mm5\n\t"      \
274
    "movq      %%mm"blue", %%mm6\n\t"      \
275
    "punpcklbw %%mm4,      %%mm7\n\t"      \
276
    "punpcklbw %%mm5,      %%mm6\n\t"      \
277
    "movq      %%mm7,      %%mm3\n\t"      \
278
    "punpckhwd %%mm7,      %%mm6\n\t"      \
279
    "psllq     $16,        %%mm3\n\t"      \
280
    "psrlq     $32,        %%mm6\n\t"      \
281
    "psrlq     $48,        %%mm3\n\t"      \
282
    "psllq     $8,         %%mm6\n\t"      \
283
    "movq      %%mm"red",  %%mm7\n\t"      \
284
    "por       %%mm6,      %%mm3\n\t"      \
285
    "movq      %%mm"blue", %%mm6\n\t"      \
286
    "movq      %%mm2,      %%mm5\n\t"      \
287
    "punpckhbw %%mm4,      %%mm7\n\t"      \
288
    "punpckhbw %%mm5,      %%mm6\n\t"      \
289
    "movq      %%mm6,      %%mm5\n\t"      \
290
    "punpcklwd %%mm7,      %%mm6\n\t"      \
291
    "psrlq     $16,        %%mm5\n\t"      \
292
    "psllq     $56,        %%mm5\n\t"      \
293
    "por       %%mm5,      %%mm3\n\t"      \
294
    "psllq     $32,        %%mm6\n\t"      \
295
    "por       %%mm6,      %%mm3\n\t"      \
296
    MOVNTQ "   %%mm3,      8(%1)\n\t"      \
297
\
298
    /* generate third packed RGB octet */  \
299
    "movq      %%mm"red",  %%mm7\n\t"      \
300
    "movq      %%mm2,      %%mm5\n\t"      \
301
    "movq      %%mm2,      %%mm3\n\t"      \
302
    "movq      %%mm"blue", %%mm6\n\t"      \
303
    "punpckhbw %%mm"red",  %%mm3\n\t"      \
304
    "punpckhbw %%mm4,      %%mm7\n\t"      \
305
    "psllq     $32,        %%mm3\n\t"      \
306
    "punpckhbw %%mm5,      %%mm6\n\t"      \
307
    "psrlq     $48,        %%mm3\n\t"      \
308
    "punpckhwd %%mm7,      %%mm6\n\t"      \
309
    "movq      %%mm6,      %%mm7\n\t"      \
310
    "psrlq     $32,        %%mm6\n\t"      \
311
    "psllq     $32,        %%mm7\n\t"      \
312
    "psllq     $40,        %%mm6\n\t"      \
313
    "psrlq     $16,        %%mm7\n\t"      \
314
    "por       %%mm6,      %%mm3\n\t"      \
315
    "por       %%mm7,      %%mm3\n\t"      \
316
    MOVNTQ "   %%mm3,      16(%1)\n\t"     \
317

    
318
static inline int RENAME(yuv420_rgb24)(SwsContext *c, const uint8_t *src[],
319
                                       int srcStride[],
320
                                       int srcSliceY, int srcSliceH,
321
                                       uint8_t *dst[], int dstStride[])
322
{
323
    int y, h_size;
324

    
325
    YUV2RGB_LOOP(3)
326

    
327
        YUV2RGB_INITIAL_LOAD
328
        YUV2RGB
329
        RGB_PACK24(REG_BLUE, REG_RED)
330

    
331
    YUV2RGB_ENDLOOP(3)
332
    YUV2RGB_OPERANDS
333
    YUV2RGB_ENDFUNC
334
}
335

    
336
static inline int RENAME(yuv420_bgr24)(SwsContext *c, const uint8_t *src[],
337
                                       int srcStride[],
338
                                       int srcSliceY, int srcSliceH,
339
                                       uint8_t *dst[], int dstStride[])
340
{
341
    int y, h_size;
342

    
343
    YUV2RGB_LOOP(3)
344

    
345
        YUV2RGB_INITIAL_LOAD
346
        YUV2RGB
347
        RGB_PACK24(REG_RED, REG_BLUE)
348

    
349
    YUV2RGB_ENDLOOP(3)
350
    YUV2RGB_OPERANDS
351
    YUV2RGB_ENDFUNC
352
}
353

    
354

    
355
#define SET_EMPTY_ALPHA                                                      \
356
    "pcmpeqd   %%mm"REG_ALPHA", %%mm"REG_ALPHA"\n\t" /* set alpha to 0xFF */ \
357

    
358
#define LOAD_ALPHA                                   \
359
    "movq      (%6, %0, 2),     %%mm"REG_ALPHA"\n\t" \
360

    
361
#define RGB_PACK32(red, green, blue, alpha)  \
362
    "movq      %%mm"blue",  %%mm5\n\t"       \
363
    "movq      %%mm"red",   %%mm6\n\t"       \
364
    "punpckhbw %%mm"green", %%mm5\n\t"       \
365
    "punpcklbw %%mm"green", %%mm"blue"\n\t"  \
366
    "punpckhbw %%mm"alpha", %%mm6\n\t"       \
367
    "punpcklbw %%mm"alpha", %%mm"red"\n\t"   \
368
    "movq      %%mm"blue",  %%mm"green"\n\t" \
369
    "movq      %%mm5,       %%mm"alpha"\n\t" \
370
    "punpcklwd %%mm"red",   %%mm"blue"\n\t"  \
371
    "punpckhwd %%mm"red",   %%mm"green"\n\t" \
372
    "punpcklwd %%mm6,       %%mm5\n\t"       \
373
    "punpckhwd %%mm6,       %%mm"alpha"\n\t" \
374
    MOVNTQ "   %%mm"blue",   0(%1)\n\t"      \
375
    MOVNTQ "   %%mm"green",  8(%1)\n\t"      \
376
    MOVNTQ "   %%mm5,       16(%1)\n\t"      \
377
    MOVNTQ "   %%mm"alpha", 24(%1)\n\t"      \
378

    
379
static inline int RENAME(yuv420_rgb32)(SwsContext *c, const uint8_t *src[],
380
                                       int srcStride[],
381
                                       int srcSliceY, int srcSliceH,
382
                                       uint8_t *dst[], int dstStride[])
383
{
384
    int y, h_size;
385

    
386
    YUV2RGB_LOOP(4)
387

    
388
        YUV2RGB_INITIAL_LOAD
389
        YUV2RGB
390
        SET_EMPTY_ALPHA
391
        RGB_PACK32(REG_RED, REG_GREEN, REG_BLUE, REG_ALPHA)
392

    
393
    YUV2RGB_ENDLOOP(4)
394
    YUV2RGB_OPERANDS
395
    YUV2RGB_ENDFUNC
396
}
397

    
398
static inline int RENAME(yuva420_rgb32)(SwsContext *c, const uint8_t *src[],
399
                                        int srcStride[],
400
                                        int srcSliceY, int srcSliceH,
401
                                        uint8_t *dst[], int dstStride[])
402
{
403
#if HAVE_7REGS
404
    int y, h_size;
405

    
406
    YUV2RGB_LOOP(4)
407

    
408
        const uint8_t *pa = src[3] + y * srcStride[3];
409
        YUV2RGB_INITIAL_LOAD
410
        YUV2RGB
411
        LOAD_ALPHA
412
        RGB_PACK32(REG_RED, REG_GREEN, REG_BLUE, REG_ALPHA)
413

    
414
    YUV2RGB_ENDLOOP(4)
415
    YUV2RGB_OPERANDS_ALPHA
416
    YUV2RGB_ENDFUNC
417
#endif
418
}
419

    
420
static inline int RENAME(yuv420_bgr32)(SwsContext *c, const uint8_t *src[],
421
                                       int srcStride[],
422
                                       int srcSliceY, int srcSliceH,
423
                                       uint8_t *dst[], int dstStride[])
424
{
425
    int y, h_size;
426

    
427
    YUV2RGB_LOOP(4)
428

    
429
        YUV2RGB_INITIAL_LOAD
430
        YUV2RGB
431
        SET_EMPTY_ALPHA
432
        RGB_PACK32(REG_BLUE, REG_GREEN, REG_RED, REG_ALPHA)
433

    
434
    YUV2RGB_ENDLOOP(4)
435
    YUV2RGB_OPERANDS
436
    YUV2RGB_ENDFUNC
437
}
438

    
439
static inline int RENAME(yuva420_bgr32)(SwsContext *c, const uint8_t *src[],
440
                                        int srcStride[],
441
                                        int srcSliceY, int srcSliceH,
442
                                        uint8_t *dst[], int dstStride[])
443
{
444
#if HAVE_7REGS
445
    int y, h_size;
446

    
447
    YUV2RGB_LOOP(4)
448

    
449
        const uint8_t *pa = src[3] + y * srcStride[3];
450
        YUV2RGB_INITIAL_LOAD
451
        YUV2RGB
452
        LOAD_ALPHA
453
        RGB_PACK32(REG_BLUE, REG_GREEN, REG_RED, REG_ALPHA)
454

    
455
    YUV2RGB_ENDLOOP(4)
456
    YUV2RGB_OPERANDS_ALPHA
457
    YUV2RGB_ENDFUNC
458
#endif
459
}