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/*
 * VP9 SIMD optimizations
 *
 * Copyright (c) 2013 Ronald S. Bultje <rsbultje@gmail.com>
 *
 * This file is part of Libav.
 *
 * Libav 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.
 *
 * Libav 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 Libav; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/internal.h"
#include "libavutil/mem.h"
#include "libavutil/x86/cpu.h"
#include "libavcodec/vp9.h"

#if HAVE_YASM

#define fpel_func(avg, sz, opt)                                                 \
void ff_vp9_ ## avg ## sz ## _ ## opt(uint8_t *dst, ptrdiff_t dst_stride,       \
                                      const uint8_t *src, ptrdiff_t src_stride, \
                                      int h, int mx, int my)

fpel_func(put,  4, mmx);
fpel_func(put,  8, mmx);
fpel_func(put, 16, sse);
fpel_func(put, 32, sse);
fpel_func(put, 64, sse);
fpel_func(avg,  4, mmxext);
fpel_func(avg,  8, mmxext);
fpel_func(avg, 16, sse2);
fpel_func(avg, 32, sse2);
fpel_func(avg, 64, sse2);
fpel_func(put, 32, avx);
fpel_func(put, 64, avx);
fpel_func(avg, 32, avx2);
fpel_func(avg, 64, avx2);
#undef fpel_func

#define mc_func(avg, sz, dir, opt, type, f_sz)                                  \
void                                                                            \
ff_vp9_ ## avg ## _8tap_1d_ ## dir ## _ ## sz ## _ ## opt(uint8_t *dst,         \
                                                          ptrdiff_t dst_stride, \
                                                          const uint8_t *src,   \
                                                          ptrdiff_t src_stride, \
                                                          int h,                \
                                                          const type (*filter)[f_sz])

#define mc_funcs(sz, opt, type, f_sz)     \
    mc_func(put, sz, h, opt, type, f_sz); \
    mc_func(avg, sz, h, opt, type, f_sz); \
    mc_func(put, sz, v, opt, type, f_sz); \
    mc_func(avg, sz, v, opt, type, f_sz)

mc_funcs(4, mmxext, int16_t,  8);
mc_funcs(8, sse2,   int16_t,  8);
mc_funcs(4, ssse3,  int8_t,  32);
mc_funcs(8, ssse3,  int8_t,  32);
#if ARCH_X86_64
mc_funcs(16, ssse3, int8_t,  32);
mc_funcs(32, avx2,  int8_t,  32);
#endif

#undef mc_funcs
#undef mc_func

#define mc_rep_func(avg, sz, hsz, dir, opt, type, f_sz)                     \
static av_always_inline void                                                \
ff_vp9_ ## avg ## _8tap_1d_ ## dir ## _ ## sz ## _ ## opt(uint8_t *dst,     \
                                                      ptrdiff_t dst_stride, \
                                                      const uint8_t *src,   \
                                                      ptrdiff_t src_stride, \
                                                      int h,                \
                                                      const type (*filter)[f_sz]) \
{                                                                           \
    ff_vp9_ ## avg ## _8tap_1d_ ## dir ## _ ## hsz ## _ ## opt(dst,         \
                                                           dst_stride,      \
                                                           src,             \
                                                           src_stride,      \
                                                           h,               \
                                                           filter);         \
    ff_vp9_ ## avg ## _8tap_1d_ ## dir ## _ ## hsz ## _ ## opt(dst + hsz,   \
                                                           dst_stride,      \
                                                           src + hsz,       \
                                                           src_stride,      \
                                                           h, filter);      \
}

#define mc_rep_funcs(sz, hsz, opt, type, f_sz)     \
    mc_rep_func(put, sz, hsz, h, opt, type, f_sz)  \
    mc_rep_func(avg, sz, hsz, h, opt, type, f_sz)  \
    mc_rep_func(put, sz, hsz, v, opt, type, f_sz)  \
    mc_rep_func(avg, sz, hsz, v, opt, type, f_sz)

mc_rep_funcs(16, 8,  sse2,  int16_t,  8)
#if ARCH_X86_32
mc_rep_funcs(16, 8,  ssse3, int8_t,  32)
#endif
mc_rep_funcs(32, 16, sse2,  int16_t,  8)
mc_rep_funcs(32, 16, ssse3, int8_t,  32)
mc_rep_funcs(64, 32, sse2,  int16_t,  8)
mc_rep_funcs(64, 32, ssse3, int8_t,  32)
#if ARCH_X86_64 && HAVE_AVX2_EXTERNAL
mc_rep_funcs(64, 32, avx2,  int8_t,  32)
#endif

#undef mc_rep_funcs
#undef mc_rep_func

extern const int8_t ff_filters_ssse3[3][15][4][32];
extern const int16_t ff_filters_sse2[3][15][8][8];

#define filter_8tap_2d_fn(op, sz, f, f_opt, fname, align, opt)                   \
static void                                                                      \
op ## _8tap_ ## fname ## _ ## sz ## hv_ ## opt(uint8_t *dst,                     \
                                               ptrdiff_t dst_stride,             \
                                               const uint8_t *src,               \
                                               ptrdiff_t src_stride,             \
                                               int h, int mx, int my)            \
{                                                                                \
    LOCAL_ALIGNED_ ## align(uint8_t, temp, [71 * 64]);                           \
    ff_vp9_put_8tap_1d_h_ ## sz ## _ ## opt(temp, 64,                            \
                                            src - 3 * src_stride,                \
                                            src_stride, h + 7,                   \
                                            ff_filters_ ## f_opt[f][mx - 1]);    \
    ff_vp9_ ## op ## _8tap_1d_v_ ## sz ## _ ## opt(dst, dst_stride,              \
                                                   temp + 3 * 64, 64, h,         \
                                                   ff_filters_ ## f_opt[f][my - 1]); \
}

#define filters_8tap_2d_fn(op, sz, align, opt, f_opt)                          \
    filter_8tap_2d_fn(op, sz, FILTER_8TAP_REGULAR, f_opt, regular, align, opt) \
    filter_8tap_2d_fn(op, sz, FILTER_8TAP_SHARP,   f_opt, sharp,   align, opt) \
    filter_8tap_2d_fn(op, sz, FILTER_8TAP_SMOOTH,  f_opt, smooth,  align, opt)

#define filters_8tap_2d_fn2(op, align, opt4, opt8, f_opt) \
    filters_8tap_2d_fn(op, 64, align, opt8, f_opt)  \
    filters_8tap_2d_fn(op, 32, align, opt8, f_opt)  \
    filters_8tap_2d_fn(op, 16, align, opt8, f_opt)  \
    filters_8tap_2d_fn(op, 8,  align, opt8, f_opt)  \
    filters_8tap_2d_fn(op, 4,  align, opt4, f_opt)


filters_8tap_2d_fn2(put, 16, mmxext, sse2, sse2)
filters_8tap_2d_fn2(avg, 16, mmxext, sse2, sse2)
filters_8tap_2d_fn2(put, 16, ssse3, ssse3, ssse3)
filters_8tap_2d_fn2(avg, 16, ssse3, ssse3, ssse3)
#if ARCH_X86_64 && HAVE_AVX2_EXTERNAL
filters_8tap_2d_fn(put, 64, 32, avx2, ssse3)
filters_8tap_2d_fn(put, 32, 32, avx2, ssse3)
filters_8tap_2d_fn(avg, 64, 32, avx2, ssse3)
filters_8tap_2d_fn(avg, 32, 32, avx2, ssse3)
#endif

#undef filters_8tap_2d_fn2
#undef filters_8tap_2d_fn
#undef filter_8tap_2d_fn

#define filter_8tap_1d_fn(op, sz, f, f_opt, fname, dir, dvar, opt)         \
static void                                                                \
op ## _8tap_ ## fname ## _ ## sz ## dir ## _ ## opt(uint8_t *dst,          \
                                                    ptrdiff_t dst_stride,  \
                                                    const uint8_t *src,    \
                                                    ptrdiff_t src_stride,  \
                                                    int h, int mx,         \
                                                    int my)                \
{                                                                          \
    ff_vp9_ ## op ## _8tap_1d_ ## dir ## _ ## sz ## _ ## opt(dst,          \
                                                             dst_stride,   \
                                                             src,          \
                                                             src_stride, h,\
                                                             ff_filters_ ## f_opt[f][dvar - 1]); \
}

#define filters_8tap_1d_fn(op, sz, dir, dvar, opt, f_opt)                          \
    filter_8tap_1d_fn(op, sz, FILTER_8TAP_REGULAR, f_opt, regular, dir, dvar, opt) \
    filter_8tap_1d_fn(op, sz, FILTER_8TAP_SHARP,   f_opt, sharp,   dir, dvar, opt) \
    filter_8tap_1d_fn(op, sz, FILTER_8TAP_SMOOTH,  f_opt, smooth,  dir, dvar, opt)

#define filters_8tap_1d_fn2(op, sz, opt, f_opt)        \
    filters_8tap_1d_fn(op, sz, h, mx, opt, f_opt)      \
    filters_8tap_1d_fn(op, sz, v, my, opt, f_opt)

#define filters_8tap_1d_fn3(op, opt4, opt8, f_opt) \
    filters_8tap_1d_fn2(op, 64, opt8, f_opt) \
    filters_8tap_1d_fn2(op, 32, opt8, f_opt) \
    filters_8tap_1d_fn2(op, 16, opt8, f_opt) \
    filters_8tap_1d_fn2(op,  8, opt8, f_opt) \
    filters_8tap_1d_fn2(op,  4, opt4, f_opt)

filters_8tap_1d_fn3(put, mmxext, sse2, sse2)
filters_8tap_1d_fn3(avg, mmxext, sse2, sse2)
filters_8tap_1d_fn3(put, ssse3, ssse3, ssse3)
filters_8tap_1d_fn3(avg, ssse3, ssse3, ssse3)
#if ARCH_X86_64 && HAVE_AVX2_EXTERNAL
filters_8tap_1d_fn2(put, 64, avx2, ssse3)
filters_8tap_1d_fn2(put, 32, avx2, ssse3)
filters_8tap_1d_fn2(avg, 64, avx2, ssse3)
filters_8tap_1d_fn2(avg, 32, avx2, ssse3)
#endif

#undef filters_8tap_1d_fn
#undef filters_8tap_1d_fn2
#undef filters_8tap_1d_fn3
#undef filter_8tap_1d_fn

#define lpf_funcs(size1, size2, opt) \
void ff_vp9_loop_filter_v_##size1##_##size2##_##opt(uint8_t *dst, ptrdiff_t stride, \
                                                    int E, int I, int H); \
void ff_vp9_loop_filter_h_##size1##_##size2##_##opt(uint8_t *dst, ptrdiff_t stride, \
                                                    int E, int I, int H)

lpf_funcs(16, 16, sse2);
lpf_funcs(16, 16, ssse3);
lpf_funcs(16, 16, avx);
lpf_funcs(44, 16, sse2);
lpf_funcs(44, 16, ssse3);
lpf_funcs(44, 16, avx);
lpf_funcs(84, 16, sse2);
lpf_funcs(84, 16, ssse3);
lpf_funcs(84, 16, avx);
lpf_funcs(48, 16, sse2);
lpf_funcs(48, 16, ssse3);
lpf_funcs(48, 16, avx);
lpf_funcs(88, 16, sse2);
lpf_funcs(88, 16, ssse3);
lpf_funcs(88, 16, avx);

#undef lpf_funcs

#endif /* HAVE_YASM */

av_cold void ff_vp9dsp_init_x86(VP9DSPContext *dsp)
{
#if HAVE_YASM
    int cpu_flags = av_get_cpu_flags();

#define init_fpel(idx1, idx2, sz, type, opt)                            \
    dsp->mc[idx1][FILTER_8TAP_SMOOTH ][idx2][0][0] =                    \
    dsp->mc[idx1][FILTER_8TAP_REGULAR][idx2][0][0] =                    \
    dsp->mc[idx1][FILTER_8TAP_SHARP  ][idx2][0][0] =                    \
    dsp->mc[idx1][FILTER_BILINEAR    ][idx2][0][0] = ff_vp9_ ## type ## sz ## _ ## opt


#define init_subpel1(idx1, idx2, idxh, idxv, sz, dir, type, opt) \
    dsp->mc[idx1][FILTER_8TAP_SMOOTH][idx2][idxh][idxv]  = type ## _8tap_smooth_  ## sz ## dir ## _ ## opt; \
    dsp->mc[idx1][FILTER_8TAP_REGULAR][idx2][idxh][idxv] = type ## _8tap_regular_ ## sz ## dir ## _ ## opt; \
    dsp->mc[idx1][FILTER_8TAP_SHARP][idx2][idxh][idxv]   = type ## _8tap_sharp_   ## sz ## dir ## _ ## opt

#define init_subpel2(idx1, idx2, sz, type, opt) \
    init_subpel1(idx1, idx2, 1, 1, sz, hv, type, opt); \
    init_subpel1(idx1, idx2, 0, 1, sz, v,  type, opt); \
    init_subpel1(idx1, idx2, 1, 0, sz, h,  type, opt)

#define init_subpel3_32_64(idx, type, opt) \
    init_subpel2(0, idx, 64, type, opt); \
    init_subpel2(1, idx, 32, type, opt)

#define init_subpel3_8to64(idx, type, opt) \
    init_subpel3_32_64(idx, type, opt); \
    init_subpel2(2, idx, 16, type, opt); \
    init_subpel2(3, idx,  8, type, opt)

#define init_subpel3(idx, type, opt) \
    init_subpel3_8to64(idx, type, opt); \
    init_subpel2(4, idx,  4, type, opt)

#define init_lpf(opt) do { \
    dsp->loop_filter_16[0] = ff_vp9_loop_filter_h_16_16_##opt; \
    dsp->loop_filter_16[1] = ff_vp9_loop_filter_v_16_16_##opt; \
    dsp->loop_filter_mix2[0][0][0] = ff_vp9_loop_filter_h_44_16_##opt; \
    dsp->loop_filter_mix2[0][0][1] = ff_vp9_loop_filter_v_44_16_##opt; \
    dsp->loop_filter_mix2[0][1][0] = ff_vp9_loop_filter_h_48_16_##opt; \
    dsp->loop_filter_mix2[0][1][1] = ff_vp9_loop_filter_v_48_16_##opt; \
    dsp->loop_filter_mix2[1][0][0] = ff_vp9_loop_filter_h_84_16_##opt; \
    dsp->loop_filter_mix2[1][0][1] = ff_vp9_loop_filter_v_84_16_##opt; \
    dsp->loop_filter_mix2[1][1][0] = ff_vp9_loop_filter_h_88_16_##opt; \
    dsp->loop_filter_mix2[1][1][1] = ff_vp9_loop_filter_v_88_16_##opt; \
} while (0)

    if (EXTERNAL_MMX(cpu_flags)) {
        init_fpel(4, 0,  4, put, mmx);
        init_fpel(3, 0,  8, put, mmx);
    }

    if (EXTERNAL_MMXEXT(cpu_flags)) {
        init_subpel2(4, 0, 4, put, mmxext);
        init_subpel2(4, 1, 4, avg, mmxext);
        init_fpel(4, 1,  4, avg, mmxext);
        init_fpel(3, 1,  8, avg, mmxext);
    }

    if (EXTERNAL_SSE(cpu_flags)) {
        init_fpel(2, 0, 16, put, sse);
        init_fpel(1, 0, 32, put, sse);
        init_fpel(0, 0, 64, put, sse);
    }

    if (EXTERNAL_SSE2(cpu_flags)) {
        init_subpel3_8to64(0, put, sse2);
        init_subpel3_8to64(1, avg, sse2);
        init_fpel(2, 1, 16, avg, sse2);
        init_fpel(1, 1, 32, avg, sse2);
        init_fpel(0, 1, 64, avg, sse2);
        init_lpf(sse2);
    }

    if (EXTERNAL_SSSE3(cpu_flags)) {
        init_subpel3(0, put, ssse3);
        init_subpel3(1, avg, ssse3);
        init_lpf(ssse3);
    }

    if (EXTERNAL_AVX(cpu_flags)) {
        init_fpel(1, 0, 32, put, avx);
        init_fpel(0, 0, 64, put, avx);
        init_lpf(avx);
    }

    if (EXTERNAL_AVX2(cpu_flags)) {
        init_fpel(1, 1, 32, avg, avx2);
        init_fpel(0, 1, 64, avg, avx2);

#if ARCH_X86_64 && HAVE_AVX2_EXTERNAL
        init_subpel3_32_64(0, put, avx2);
        init_subpel3_32_64(1, avg, avx2);
#endif /* ARCH_X86_64 && HAVE_AVX2_EXTERNAL */
    }

#undef init_fpel
#undef init_subpel1
#undef init_subpel2
#undef init_subpel3

#endif /* HAVE_YASM */
}