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  •  * SIMD-optimized halfpel functions
    
     * Copyright (c) 2000, 2001 Fabrice Bellard
     * Copyright (c) 2002-2004 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 Lesser General Public
     * License as published by the Free Software Foundation; either
     * version 2.1 of the License, or (at your option) any later version.
     *
     * FFmpeg is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     * Lesser General Public License for more details.
     *
     * You should have received a copy of the GNU Lesser General Public
     * License along with FFmpeg; if not, write to the Free Software
     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
     *
     * MMX optimization by Nick Kurshev <nickols_k@mail.ru>
     */
    
    
    #include "libavutil/attributes.h"
    
    #include "libavutil/cpu.h"
    #include "libavutil/x86/asm.h"
    
    #include "libavutil/x86/cpu.h"
    
    #include "libavcodec/avcodec.h"
    
    #include "libavcodec/hpeldsp.h"
    
    #include "libavcodec/pixels.h"
    
    
    void ff_put_pixels8_x2_mmxext(uint8_t *block, const uint8_t *pixels,
                                  ptrdiff_t line_size, int h);
    void ff_put_pixels8_x2_3dnow(uint8_t *block, const uint8_t *pixels,
                                 ptrdiff_t line_size, int h);
    void ff_put_pixels16_x2_mmxext(uint8_t *block, const uint8_t *pixels,
                                   ptrdiff_t line_size, int h);
    void ff_put_pixels16_x2_3dnow(uint8_t *block, const uint8_t *pixels,
                                  ptrdiff_t line_size, int h);
    void ff_put_no_rnd_pixels8_x2_mmxext(uint8_t *block, const uint8_t *pixels,
                                         ptrdiff_t line_size, int h);
    void ff_put_no_rnd_pixels8_x2_3dnow(uint8_t *block, const uint8_t *pixels,
                                        ptrdiff_t line_size, int h);
    void ff_put_no_rnd_pixels8_x2_exact_mmxext(uint8_t *block,
                                               const uint8_t *pixels,
                                               ptrdiff_t line_size, int h);
    void ff_put_no_rnd_pixels8_x2_exact_3dnow(uint8_t *block,
                                              const uint8_t *pixels,
                                              ptrdiff_t line_size, int h);
    void ff_put_pixels8_y2_mmxext(uint8_t *block, const uint8_t *pixels,
                                  ptrdiff_t line_size, int h);
    void ff_put_pixels8_y2_3dnow(uint8_t *block, const uint8_t *pixels,
                                 ptrdiff_t line_size, int h);
    void ff_put_no_rnd_pixels8_y2_mmxext(uint8_t *block, const uint8_t *pixels,
                                         ptrdiff_t line_size, int h);
    void ff_put_no_rnd_pixels8_y2_3dnow(uint8_t *block, const uint8_t *pixels,
                                        ptrdiff_t line_size, int h);
    void ff_put_no_rnd_pixels8_y2_exact_mmxext(uint8_t *block,
                                               const uint8_t *pixels,
                                               ptrdiff_t line_size, int h);
    void ff_put_no_rnd_pixels8_y2_exact_3dnow(uint8_t *block,
                                              const uint8_t *pixels,
                                              ptrdiff_t line_size, int h);
    void ff_avg_pixels8_3dnow(uint8_t *block, const uint8_t *pixels,
                              ptrdiff_t line_size, int h);
    void ff_avg_pixels8_x2_mmxext(uint8_t *block, const uint8_t *pixels,
                                  ptrdiff_t line_size, int h);
    void ff_avg_pixels8_x2_3dnow(uint8_t *block, const uint8_t *pixels,
                                 ptrdiff_t line_size, int h);
    void ff_avg_pixels8_y2_mmxext(uint8_t *block, const uint8_t *pixels,
                                  ptrdiff_t line_size, int h);
    void ff_avg_pixels8_y2_3dnow(uint8_t *block, const uint8_t *pixels,
                                 ptrdiff_t line_size, int h);
    void ff_avg_pixels8_xy2_mmxext(uint8_t *block, const uint8_t *pixels,
                                   ptrdiff_t line_size, int h);
    void ff_avg_pixels8_xy2_3dnow(uint8_t *block, const uint8_t *pixels,
                                  ptrdiff_t line_size, int h);
    
    
    #define avg_pixels8_mmx         ff_avg_pixels8_mmx
    
    #define avg_pixels8_x2_mmx      ff_avg_pixels8_x2_mmx
    
    #define avg_pixels16_mmx        ff_avg_pixels16_mmx
    
    #define avg_pixels8_xy2_mmx     ff_avg_pixels8_xy2_mmx
    #define avg_pixels16_xy2_mmx    ff_avg_pixels16_xy2_mmx
    
    #define put_pixels8_mmx         ff_put_pixels8_mmx
    #define put_pixels16_mmx        ff_put_pixels16_mmx
    
    #define put_pixels8_xy2_mmx     ff_put_pixels8_xy2_mmx
    #define put_pixels16_xy2_mmx    ff_put_pixels16_xy2_mmx
    
    #define avg_no_rnd_pixels16_mmx ff_avg_pixels16_mmx
    
    #define put_no_rnd_pixels8_mmx  ff_put_pixels8_mmx
    #define put_no_rnd_pixels16_mmx ff_put_pixels16_mmx
    
    
    #if HAVE_INLINE_ASM
    
    /***********************************/
    /* MMX no rounding */
    #define DEF(x, y) x ## _no_rnd_ ## y ## _mmx
    #define SET_RND  MOVQ_WONE
    #define PAVGBP(a, b, c, d, e, f)        PAVGBP_MMX_NO_RND(a, b, c, d, e, f)
    #define PAVGB(a, b, c, e)               PAVGB_MMX_NO_RND(a, b, c, e)
    
    #include "hpeldsp_rnd_template.c"
    
    #undef DEF
    #undef SET_RND
    #undef PAVGBP
    #undef PAVGB
    
    CALL_2X_PIXELS(avg_no_rnd_pixels16_y2_mmx, avg_no_rnd_pixels8_y2_mmx, 8)
    CALL_2X_PIXELS(put_no_rnd_pixels16_y2_mmx, put_no_rnd_pixels8_y2_mmx, 8)
    
    CALL_2X_PIXELS(avg_no_rnd_pixels16_xy2_mmx, avg_no_rnd_pixels8_xy2_mmx, 8)
    CALL_2X_PIXELS(put_no_rnd_pixels16_xy2_mmx, put_no_rnd_pixels8_xy2_mmx, 8)
    
    /***********************************/
    /* MMX rounding */
    
    #define DEF(x, y) x ## _ ## y ## _mmx
    #define SET_RND  MOVQ_WTWO
    #define PAVGBP(a, b, c, d, e, f)        PAVGBP_MMX(a, b, c, d, e, f)
    #define PAVGB(a, b, c, e)               PAVGB_MMX(a, b, c, e)
    
    #include "hpeldsp_rnd_template.c"
    
    
    #undef DEF
    #define DEF(x, y) ff_ ## x ## _ ## y ## _mmx
    #define STATIC
    
    #include "rnd_template.c"
    
    
    #undef DEF
    #undef SET_RND
    #undef PAVGBP
    #undef PAVGB
    
    
    CALL_2X_PIXELS(avg_pixels16_y2_mmx, avg_pixels8_y2_mmx, 8)
    CALL_2X_PIXELS(put_pixels16_y2_mmx, put_pixels8_y2_mmx, 8)
    
    CALL_2X_PIXELS_EXPORT(ff_avg_pixels16_xy2_mmx, ff_avg_pixels8_xy2_mmx, 8)
    CALL_2X_PIXELS_EXPORT(ff_put_pixels16_xy2_mmx, ff_put_pixels8_xy2_mmx, 8)
    
    
    #endif /* HAVE_INLINE_ASM */
    
    
    #if HAVE_YASM
    
    
    #define HPELDSP_AVG_PIXELS16(CPUEXT)                      \
        CALL_2X_PIXELS(put_no_rnd_pixels16_x2 ## CPUEXT, ff_put_no_rnd_pixels8_x2 ## CPUEXT, 8) \
        CALL_2X_PIXELS(put_pixels16_y2        ## CPUEXT, ff_put_pixels8_y2        ## CPUEXT, 8) \
        CALL_2X_PIXELS(put_no_rnd_pixels16_y2 ## CPUEXT, ff_put_no_rnd_pixels8_y2 ## CPUEXT, 8) \
        CALL_2X_PIXELS(avg_pixels16           ## CPUEXT, ff_avg_pixels8           ## CPUEXT, 8) \
        CALL_2X_PIXELS(avg_pixels16_x2        ## CPUEXT, ff_avg_pixels8_x2        ## CPUEXT, 8) \
        CALL_2X_PIXELS(avg_pixels16_y2        ## CPUEXT, ff_avg_pixels8_y2        ## CPUEXT, 8) \
        CALL_2X_PIXELS(avg_pixels16_xy2       ## CPUEXT, ff_avg_pixels8_xy2       ## CPUEXT, 8)
    
    
    HPELDSP_AVG_PIXELS16(_3dnow)
    HPELDSP_AVG_PIXELS16(_mmxext)
    
    #define SET_HPEL_FUNCS_EXT(PFX, IDX, SIZE, CPU)                             \
        if (HAVE_MMX_EXTERNAL)                                                  \
        c->PFX ## _pixels_tab IDX [0] = PFX ## _pixels ## SIZE ## _     ## CPU;
    
    #if HAVE_MMX_INLINE
    
    #define SET_HPEL_FUNCS(PFX, IDX, SIZE, CPU)                                     \
        do {                                                                        \
    
            SET_HPEL_FUNCS_EXT(PFX, IDX, SIZE, CPU)                                 \
    
            c->PFX ## _pixels_tab IDX [1] = PFX ## _pixels ## SIZE ## _x2_  ## CPU; \
            c->PFX ## _pixels_tab IDX [2] = PFX ## _pixels ## SIZE ## _y2_  ## CPU; \
            c->PFX ## _pixels_tab IDX [3] = PFX ## _pixels ## SIZE ## _xy2_ ## CPU; \
        } while (0)
    
    #else
    #define SET_HPEL_FUNCS(PFX, IDX, SIZE, CPU)                                     \
        do {                                                                        \
            SET_HPEL_FUNCS_EXT(PFX, IDX, SIZE, CPU)                                 \
        } while (0)
    #endif
    
    static void hpeldsp_init_mmx(HpelDSPContext *c, int flags, int cpu_flags)
    
    {
        SET_HPEL_FUNCS(put,        [0], 16, mmx);
        SET_HPEL_FUNCS(put_no_rnd, [0], 16, mmx);
        SET_HPEL_FUNCS(avg,        [0], 16, mmx);
        SET_HPEL_FUNCS(avg_no_rnd,    , 16, mmx);
        SET_HPEL_FUNCS(put,        [1],  8, mmx);
        SET_HPEL_FUNCS(put_no_rnd, [1],  8, mmx);
        SET_HPEL_FUNCS(avg,        [1],  8, mmx);
    }
    
    
    static void hpeldsp_init_mmxext(HpelDSPContext *c, int flags, int cpu_flags)
    
        c->put_pixels_tab[0][1] = ff_put_pixels16_x2_mmxext;
    
        c->put_pixels_tab[0][2] = put_pixels16_y2_mmxext;
    
        c->avg_pixels_tab[0][0] = avg_pixels16_mmxext;
        c->avg_pixels_tab[0][1] = avg_pixels16_x2_mmxext;
        c->avg_pixels_tab[0][2] = avg_pixels16_y2_mmxext;
    
    
        c->put_pixels_tab[1][1] = ff_put_pixels8_x2_mmxext;
        c->put_pixels_tab[1][2] = ff_put_pixels8_y2_mmxext;
    
        c->avg_pixels_tab[1][0] = ff_avg_pixels8_mmxext;
        c->avg_pixels_tab[1][1] = ff_avg_pixels8_x2_mmxext;
        c->avg_pixels_tab[1][2] = ff_avg_pixels8_y2_mmxext;
    
        if (!(flags & CODEC_FLAG_BITEXACT)) {
    
            c->put_no_rnd_pixels_tab[0][1] = put_no_rnd_pixels16_x2_mmxext;
            c->put_no_rnd_pixels_tab[0][2] = put_no_rnd_pixels16_y2_mmxext;
    
            c->put_no_rnd_pixels_tab[1][1] = ff_put_no_rnd_pixels8_x2_mmxext;
            c->put_no_rnd_pixels_tab[1][2] = ff_put_no_rnd_pixels8_y2_mmxext;
    
    
            c->avg_pixels_tab[0][3] = avg_pixels16_xy2_mmxext;
    
            c->avg_pixels_tab[1][3] = ff_avg_pixels8_xy2_mmxext;
        }
    
        if (flags & CODEC_FLAG_BITEXACT && CONFIG_VP3_DECODER) {
            c->put_no_rnd_pixels_tab[1][1] = ff_put_no_rnd_pixels8_x2_exact_mmxext;
            c->put_no_rnd_pixels_tab[1][2] = ff_put_no_rnd_pixels8_y2_exact_mmxext;
        }
    
    #endif /* HAVE_MMXEXT_EXTERNAL */
    
    static void hpeldsp_init_3dnow(HpelDSPContext *c, int flags, int cpu_flags)
    
        c->put_pixels_tab[0][1] = ff_put_pixels16_x2_3dnow;
    
        c->put_pixels_tab[0][2] = put_pixels16_y2_3dnow;
    
        c->avg_pixels_tab[0][0] = avg_pixels16_3dnow;
        c->avg_pixels_tab[0][1] = avg_pixels16_x2_3dnow;
        c->avg_pixels_tab[0][2] = avg_pixels16_y2_3dnow;
    
    
        c->put_pixels_tab[1][1] = ff_put_pixels8_x2_3dnow;
        c->put_pixels_tab[1][2] = ff_put_pixels8_y2_3dnow;
    
        c->avg_pixels_tab[1][0] = ff_avg_pixels8_3dnow;
        c->avg_pixels_tab[1][1] = ff_avg_pixels8_x2_3dnow;
        c->avg_pixels_tab[1][2] = ff_avg_pixels8_y2_3dnow;
    
        if (!(flags & CODEC_FLAG_BITEXACT)){
    
            c->put_no_rnd_pixels_tab[0][1] = put_no_rnd_pixels16_x2_3dnow;
            c->put_no_rnd_pixels_tab[0][2] = put_no_rnd_pixels16_y2_3dnow;
    
            c->put_no_rnd_pixels_tab[1][1] = ff_put_no_rnd_pixels8_x2_3dnow;
            c->put_no_rnd_pixels_tab[1][2] = ff_put_no_rnd_pixels8_y2_3dnow;
    
    
            c->avg_pixels_tab[0][3] = avg_pixels16_xy2_3dnow;
    
            c->avg_pixels_tab[1][3] = ff_avg_pixels8_xy2_3dnow;
        }
    
        if (flags & CODEC_FLAG_BITEXACT && CONFIG_VP3_DECODER) {
            c->put_no_rnd_pixels_tab[1][1] = ff_put_no_rnd_pixels8_x2_exact_3dnow;
            c->put_no_rnd_pixels_tab[1][2] = ff_put_no_rnd_pixels8_y2_exact_3dnow;
        }
    
    #endif /* HAVE_AMD3DNOW_EXTERNAL */
    
    static void hpeldsp_init_sse2(HpelDSPContext *c, int flags, int cpu_flags)
    
        if (!(cpu_flags & AV_CPU_FLAG_SSE2SLOW)) {
    
            // these functions are slower than mmx on AMD, but faster on Intel
            c->put_pixels_tab[0][0]        = ff_put_pixels16_sse2;
            c->put_no_rnd_pixels_tab[0][0] = ff_put_pixels16_sse2;
            c->avg_pixels_tab[0][0]        = ff_avg_pixels16_sse2;
        }
    
    #endif /* HAVE_SSE2_EXTERNAL */
    
    av_cold void ff_hpeldsp_init_x86(HpelDSPContext *c, int flags)
    
        int cpu_flags = av_get_cpu_flags();
    
        if (INLINE_MMX(cpu_flags))
    
            hpeldsp_init_mmx(c, flags, cpu_flags);
    
        if (EXTERNAL_AMD3DNOW(cpu_flags))
    
            hpeldsp_init_3dnow(c, flags, cpu_flags);
    
        if (EXTERNAL_MMXEXT(cpu_flags))
            hpeldsp_init_mmxext(c, flags, cpu_flags);
    
    
        if (EXTERNAL_SSE2(cpu_flags))
    
            hpeldsp_init_sse2(c, flags, cpu_flags);