/*
 * VP8 DSP functions x86-optimized
 * Copyright (c) 2010 Ronald S. Bultje <rsbultje@gmail.com>
 * Copyright (c) 2010 Fiona Glaser <fiona@x264.com>
 *
 * 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
 */

#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/mem_internal.h"
#include "libavutil/x86/cpu.h"
#include "libavcodec/vp8dsp.h"

/*
 * MC functions
 */
void ff_put_vp8_epel8_h4_sse2  (uint8_t *dst, ptrdiff_t dststride,
                                const uint8_t *src, ptrdiff_t srcstride,
                                int height, int mx, int my);
void ff_put_vp8_epel8_h6_sse2  (uint8_t *dst, ptrdiff_t dststride,
                                const uint8_t *src, ptrdiff_t srcstride,
                                int height, int mx, int my);
void ff_put_vp8_epel8_v4_sse2  (uint8_t *dst, ptrdiff_t dststride,
                                const uint8_t *src, ptrdiff_t srcstride,
                                int height, int mx, int my);
void ff_put_vp8_epel8_v6_sse2  (uint8_t *dst, ptrdiff_t dststride,
                                const uint8_t *src, ptrdiff_t srcstride,
                                int height, int mx, int my);

void ff_put_vp8_epel4_h4_ssse3 (uint8_t *dst, ptrdiff_t dststride,
                                const uint8_t *src, ptrdiff_t srcstride,
                                int height, int mx, int my);
void ff_put_vp8_epel4_h6_ssse3 (uint8_t *dst, ptrdiff_t dststride,
                                const uint8_t *src, ptrdiff_t srcstride,
                                int height, int mx, int my);
void ff_put_vp8_epel4_v4_ssse3 (uint8_t *dst, ptrdiff_t dststride,
                                const uint8_t *src, ptrdiff_t srcstride,
                                int height, int mx, int my);
void ff_put_vp8_epel4_v6_ssse3 (uint8_t *dst, ptrdiff_t dststride,
                                const uint8_t *src, ptrdiff_t srcstride,
                                int height, int mx, int my);
void ff_put_vp8_epel8_h4_ssse3 (uint8_t *dst, ptrdiff_t dststride,
                                const uint8_t *src, ptrdiff_t srcstride,
                                int height, int mx, int my);
void ff_put_vp8_epel8_h6_ssse3 (uint8_t *dst, ptrdiff_t dststride,
                                const uint8_t *src, ptrdiff_t srcstride,
                                int height, int mx, int my);
void ff_put_vp8_epel8_v4_ssse3 (uint8_t *dst, ptrdiff_t dststride,
                                const uint8_t *src, ptrdiff_t srcstride,
                                int height, int mx, int my);
void ff_put_vp8_epel8_v6_ssse3 (uint8_t *dst, ptrdiff_t dststride,
                                const uint8_t *src, ptrdiff_t srcstride,
                                int height, int mx, int my);

void ff_put_vp8_bilinear8_h_sse2  (uint8_t *dst, ptrdiff_t dststride,
                                   const uint8_t *src, ptrdiff_t srcstride,
                                   int height, int mx, int my);
void ff_put_vp8_bilinear4_h_ssse3 (uint8_t *dst, ptrdiff_t dststride,
                                   const uint8_t *src, ptrdiff_t srcstride,
                                   int height, int mx, int my);
void ff_put_vp8_bilinear8_h_ssse3 (uint8_t *dst, ptrdiff_t dststride,
                                   const uint8_t *src, ptrdiff_t srcstride,
                                   int height, int mx, int my);

void ff_put_vp8_bilinear8_v_sse2  (uint8_t *dst, ptrdiff_t dststride,
                                   const uint8_t *src, ptrdiff_t srcstride,
                                   int height, int mx, int my);
void ff_put_vp8_bilinear4_v_ssse3 (uint8_t *dst, ptrdiff_t dststride,
                                   const uint8_t *src, ptrdiff_t srcstride,
                                   int height, int mx, int my);
void ff_put_vp8_bilinear8_v_ssse3 (uint8_t *dst, ptrdiff_t dststride,
                                   const uint8_t *src, ptrdiff_t srcstride,
                                   int height, int mx, int my);


void ff_put_vp8_pixels8_sse2(uint8_t *dst, ptrdiff_t dststride,
                             const uint8_t *src, ptrdiff_t srcstride,
                             int height, int mx, int my);
void ff_put_vp8_pixels16_sse(uint8_t *dst, ptrdiff_t dststride,
                             const uint8_t *src, ptrdiff_t srcstride,
                             int height, int mx, int my);

#define TAP_W16(OPT, FILTERTYPE, TAPTYPE) \
static void ff_put_vp8_ ## FILTERTYPE ## 16_ ## TAPTYPE ## _ ## OPT( \
    uint8_t *dst,  ptrdiff_t dststride, const uint8_t *src, \
    ptrdiff_t srcstride, int height, int mx, int my) \
{ \
    ff_put_vp8_ ## FILTERTYPE ## 8_ ## TAPTYPE ## _ ## OPT( \
        dst,     dststride, src,     srcstride, height, mx, my); \
    ff_put_vp8_ ## FILTERTYPE ## 8_ ## TAPTYPE ## _ ## OPT( \
        dst + 8, dststride, src + 8, srcstride, height, mx, my); \
}

TAP_W16(sse2,  epel, h6)
TAP_W16(sse2,  epel, v6)
TAP_W16(sse2,  bilinear, h)
TAP_W16(sse2,  bilinear, v)

TAP_W16(ssse3, epel, h6)
TAP_W16(ssse3, epel, v6)
TAP_W16(ssse3, bilinear, h)
TAP_W16(ssse3, bilinear, v)

#define HVTAP(OPT, ALIGN, TAPNUMX, TAPNUMY, SIZE, MAXHEIGHT) \
static void ff_put_vp8_epel ## SIZE ## _h ## TAPNUMX ## v ## TAPNUMY ## _ ## OPT( \
    uint8_t *dst, ptrdiff_t dststride, const uint8_t *src, \
    ptrdiff_t srcstride, int height, int mx, int my) \
{ \
    LOCAL_ALIGNED(ALIGN, uint8_t, tmp, [SIZE * (MAXHEIGHT + TAPNUMY - 1)]); \
    uint8_t *tmpptr = tmp + SIZE * (TAPNUMY / 2 - 1); \
    src -= srcstride * (TAPNUMY / 2 - 1); \
    ff_put_vp8_epel ## SIZE ## _h ## TAPNUMX ## _ ## OPT( \
        tmp, SIZE,      src,    srcstride, height + TAPNUMY - 1, mx, my); \
    ff_put_vp8_epel ## SIZE ## _v ## TAPNUMY ## _ ## OPT( \
        dst, dststride, tmpptr, SIZE,      height,               mx, my); \
}

#define HVTAPSSE2(x, y, w) \
HVTAP(sse2,  16, x, y, w, 16) \
HVTAP(ssse3, 16, x, y, w, 16)

HVTAPSSE2(4, 4, 8)
HVTAPSSE2(4, 6, 8)
HVTAPSSE2(6, 4, 8)
HVTAPSSE2(6, 6, 8)
HVTAPSSE2(6, 6, 16)

HVTAP(ssse3, 16, 4, 4, 4, 8)
HVTAP(ssse3, 16, 4, 6, 4, 8)
HVTAP(ssse3, 16, 6, 4, 4, 8)
HVTAP(ssse3, 16, 6, 6, 4, 8)

#define HVBILIN(OPT, ALIGN, SIZE, MAXHEIGHT) \
static void ff_put_vp8_bilinear ## SIZE ## _hv_ ## OPT( \
    uint8_t *dst, ptrdiff_t dststride, const uint8_t *src, \
    ptrdiff_t srcstride, int height, int mx, int my) \
{ \
    LOCAL_ALIGNED(ALIGN, uint8_t, tmp, [SIZE * (MAXHEIGHT + 2)]); \
    ff_put_vp8_bilinear ## SIZE ## _h_ ## OPT( \
        tmp, SIZE,      src, srcstride, height + 1, mx, my); \
    ff_put_vp8_bilinear ## SIZE ## _v_ ## OPT( \
        dst, dststride, tmp, SIZE,      height,     mx, my); \
}

HVBILIN(sse2,  8,  8, 16)
HVBILIN(sse2,  8, 16, 16)
HVBILIN(ssse3, 8,  4,  8)
HVBILIN(ssse3, 8,  8, 16)
HVBILIN(ssse3, 8, 16, 16)

void ff_vp8_idct_dc_add_sse2(uint8_t *dst, int16_t block[16],
                             ptrdiff_t stride);
void ff_vp8_idct_dc_add_sse4(uint8_t *dst, int16_t block[16],
                             ptrdiff_t stride);
void ff_vp8_idct_dc_add4y_sse2(uint8_t *dst, int16_t block[4][16],
                               ptrdiff_t stride);
void ff_vp8_idct_dc_add4uv_mmx(uint8_t *dst, int16_t block[2][16],
                               ptrdiff_t stride);
void ff_vp8_luma_dc_wht_sse(int16_t block[4][4][16], int16_t dc[16]);
void ff_vp8_idct_add_sse(uint8_t *dst, int16_t block[16], ptrdiff_t stride);

#define DECLARE_LOOP_FILTER(NAME)                                       \
void ff_vp8_v_loop_filter_simple_ ## NAME(uint8_t *dst,                 \
                                          ptrdiff_t stride,             \
                                          int flim);                    \
void ff_vp8_h_loop_filter_simple_ ## NAME(uint8_t *dst,                 \
                                          ptrdiff_t stride,             \
                                          int flim);                    \
void ff_vp8_v_loop_filter16y_inner_ ## NAME (uint8_t *dst,              \
                                             ptrdiff_t stride,          \
                                             int e, int i, int hvt);    \
void ff_vp8_h_loop_filter16y_inner_ ## NAME (uint8_t *dst,              \
                                             ptrdiff_t stride,          \
                                             int e, int i, int hvt);    \
void ff_vp8_v_loop_filter8uv_inner_ ## NAME (uint8_t *dstU,             \
                                             uint8_t *dstV,             \
                                             ptrdiff_t s,               \
                                             int e, int i, int hvt);    \
void ff_vp8_h_loop_filter8uv_inner_ ## NAME (uint8_t *dstU,             \
                                             uint8_t *dstV,             \
                                             ptrdiff_t s,               \
                                             int e, int i, int hvt);    \
void ff_vp8_v_loop_filter16y_mbedge_ ## NAME(uint8_t *dst,              \
                                             ptrdiff_t stride,          \
                                             int e, int i, int hvt);    \
void ff_vp8_h_loop_filter16y_mbedge_ ## NAME(uint8_t *dst,              \
                                             ptrdiff_t stride,          \
                                             int e, int i, int hvt);    \
void ff_vp8_v_loop_filter8uv_mbedge_ ## NAME(uint8_t *dstU,             \
                                             uint8_t *dstV,             \
                                             ptrdiff_t s,               \
                                             int e, int i, int hvt);    \
void ff_vp8_h_loop_filter8uv_mbedge_ ## NAME(uint8_t *dstU,             \
                                             uint8_t *dstV,             \
                                             ptrdiff_t s,               \
                                             int e, int i, int hvt);

DECLARE_LOOP_FILTER(sse2)
DECLARE_LOOP_FILTER(ssse3)
DECLARE_LOOP_FILTER(sse4)

#define VP8_LUMA_MC_FUNC(IDX, SIZE, OPT) \
    c->put_vp8_epel_pixels_tab[IDX][0][2] = ff_put_vp8_epel ## SIZE ## _h6_ ## OPT; \
    c->put_vp8_epel_pixels_tab[IDX][2][0] = ff_put_vp8_epel ## SIZE ## _v6_ ## OPT; \
    c->put_vp8_epel_pixels_tab[IDX][2][2] = ff_put_vp8_epel ## SIZE ## _h6v6_ ## OPT

#define VP8_MC_FUNC(IDX, SIZE, OPT) \
    c->put_vp8_epel_pixels_tab[IDX][0][1] = ff_put_vp8_epel ## SIZE ## _h4_ ## OPT; \
    c->put_vp8_epel_pixels_tab[IDX][1][0] = ff_put_vp8_epel ## SIZE ## _v4_ ## OPT; \
    c->put_vp8_epel_pixels_tab[IDX][1][1] = ff_put_vp8_epel ## SIZE ## _h4v4_ ## OPT; \
    c->put_vp8_epel_pixels_tab[IDX][1][2] = ff_put_vp8_epel ## SIZE ## _h6v4_ ## OPT; \
    c->put_vp8_epel_pixels_tab[IDX][2][1] = ff_put_vp8_epel ## SIZE ## _h4v6_ ## OPT; \
    VP8_LUMA_MC_FUNC(IDX, SIZE, OPT)

#define VP8_BILINEAR_MC_FUNC(IDX, SIZE, OPT) \
    c->put_vp8_bilinear_pixels_tab[IDX][0][1] = ff_put_vp8_bilinear ## SIZE ## _h_ ## OPT; \
    c->put_vp8_bilinear_pixels_tab[IDX][0][2] = ff_put_vp8_bilinear ## SIZE ## _h_ ## OPT; \
    c->put_vp8_bilinear_pixels_tab[IDX][1][0] = ff_put_vp8_bilinear ## SIZE ## _v_ ## OPT; \
    c->put_vp8_bilinear_pixels_tab[IDX][1][1] = ff_put_vp8_bilinear ## SIZE ## _hv_ ## OPT; \
    c->put_vp8_bilinear_pixels_tab[IDX][1][2] = ff_put_vp8_bilinear ## SIZE ## _hv_ ## OPT; \
    c->put_vp8_bilinear_pixels_tab[IDX][2][0] = ff_put_vp8_bilinear ## SIZE ## _v_ ## OPT; \
    c->put_vp8_bilinear_pixels_tab[IDX][2][1] = ff_put_vp8_bilinear ## SIZE ## _hv_ ## OPT; \
    c->put_vp8_bilinear_pixels_tab[IDX][2][2] = ff_put_vp8_bilinear ## SIZE ## _hv_ ## OPT


av_cold void ff_vp78dsp_init_x86(VP8DSPContext *c)
{
    int cpu_flags = av_get_cpu_flags();

    if (EXTERNAL_SSE(cpu_flags)) {
        c->put_vp8_epel_pixels_tab[0][0][0]     =
        c->put_vp8_bilinear_pixels_tab[0][0][0] = ff_put_vp8_pixels16_sse;
    }

    if (EXTERNAL_SSE2_SLOW(cpu_flags)) {
        c->put_vp8_epel_pixels_tab[1][0][0]     =
        c->put_vp8_bilinear_pixels_tab[1][0][0] = ff_put_vp8_pixels8_sse2;
        VP8_LUMA_MC_FUNC(0, 16, sse2);
        VP8_MC_FUNC(1, 8, sse2);
        VP8_BILINEAR_MC_FUNC(0, 16, sse2);
        VP8_BILINEAR_MC_FUNC(1, 8, sse2);
    }

    /* note that 4-tap width=16 functions are missing because w=16
     * is only used for luma, and luma is always a copy or sixtap. */
    if (EXTERNAL_SSSE3(cpu_flags)) {
        VP8_LUMA_MC_FUNC(0, 16, ssse3);
        VP8_MC_FUNC(1, 8, ssse3);
        VP8_MC_FUNC(2, 4, ssse3);
        VP8_BILINEAR_MC_FUNC(0, 16, ssse3);
        VP8_BILINEAR_MC_FUNC(1, 8, ssse3);
        VP8_BILINEAR_MC_FUNC(2, 4, ssse3);
    }
}

av_cold void ff_vp8dsp_init_x86(VP8DSPContext *c)
{
    int cpu_flags = av_get_cpu_flags();

    if (EXTERNAL_MMX(cpu_flags)) {
        c->vp8_idct_dc_add4uv = ff_vp8_idct_dc_add4uv_mmx;
    }

    if (EXTERNAL_SSE(cpu_flags)) {
        c->vp8_idct_add                         = ff_vp8_idct_add_sse;
        c->vp8_luma_dc_wht                      = ff_vp8_luma_dc_wht_sse;
    }

    if (EXTERNAL_SSE2_SLOW(cpu_flags)) {
        c->vp8_v_loop_filter_simple = ff_vp8_v_loop_filter_simple_sse2;

        c->vp8_v_loop_filter16y_inner = ff_vp8_v_loop_filter16y_inner_sse2;
        c->vp8_v_loop_filter8uv_inner = ff_vp8_v_loop_filter8uv_inner_sse2;

        c->vp8_v_loop_filter16y       = ff_vp8_v_loop_filter16y_mbedge_sse2;
        c->vp8_v_loop_filter8uv       = ff_vp8_v_loop_filter8uv_mbedge_sse2;
    }

    if (EXTERNAL_SSE2(cpu_flags)) {
        c->vp8_idct_dc_add            = ff_vp8_idct_dc_add_sse2;
        c->vp8_idct_dc_add4y          = ff_vp8_idct_dc_add4y_sse2;

        c->vp8_h_loop_filter_simple   = ff_vp8_h_loop_filter_simple_sse2;

        c->vp8_h_loop_filter16y_inner = ff_vp8_h_loop_filter16y_inner_sse2;
        c->vp8_h_loop_filter8uv_inner = ff_vp8_h_loop_filter8uv_inner_sse2;

        c->vp8_h_loop_filter16y       = ff_vp8_h_loop_filter16y_mbedge_sse2;
        c->vp8_h_loop_filter8uv       = ff_vp8_h_loop_filter8uv_mbedge_sse2;
    }

    if (EXTERNAL_SSSE3(cpu_flags)) {
        c->vp8_v_loop_filter_simple = ff_vp8_v_loop_filter_simple_ssse3;
        c->vp8_h_loop_filter_simple = ff_vp8_h_loop_filter_simple_ssse3;

        c->vp8_v_loop_filter16y_inner = ff_vp8_v_loop_filter16y_inner_ssse3;
        c->vp8_h_loop_filter16y_inner = ff_vp8_h_loop_filter16y_inner_ssse3;
        c->vp8_v_loop_filter8uv_inner = ff_vp8_v_loop_filter8uv_inner_ssse3;
        c->vp8_h_loop_filter8uv_inner = ff_vp8_h_loop_filter8uv_inner_ssse3;

        c->vp8_v_loop_filter16y       = ff_vp8_v_loop_filter16y_mbedge_ssse3;
        c->vp8_h_loop_filter16y       = ff_vp8_h_loop_filter16y_mbedge_ssse3;
        c->vp8_v_loop_filter8uv       = ff_vp8_v_loop_filter8uv_mbedge_ssse3;
        c->vp8_h_loop_filter8uv       = ff_vp8_h_loop_filter8uv_mbedge_ssse3;
    }

    if (EXTERNAL_SSE4(cpu_flags)) {
        c->vp8_idct_dc_add            = ff_vp8_idct_dc_add_sse4;

        c->vp8_h_loop_filter_simple   = ff_vp8_h_loop_filter_simple_sse4;
        c->vp8_h_loop_filter16y       = ff_vp8_h_loop_filter16y_mbedge_sse4;
        c->vp8_h_loop_filter8uv       = ff_vp8_h_loop_filter8uv_mbedge_sse4;
    }
}
