/*
 * Copyright © 2018-2023, VideoLAN and dav1d authors
 * Copyright © 2018-2023, Two Orioles, LLC
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "src/cpu.h"
#include "src/itx.h"

#define BF_BPC(x, bits, suffix) x##_##bits##bpc_##suffix

#define decl_itx2_fns(w, h, opt) \
decl_itx_fn(BF(dav1d_inv_txfm_add_dct_dct_##w##x##h, opt)); \
decl_itx_fn(BF(dav1d_inv_txfm_add_identity_identity_##w##x##h, opt))

#define decl_itx12_fns(w, h, opt) \
decl_itx2_fns(w, h, opt); \
decl_itx_fn(BF(dav1d_inv_txfm_add_dct_adst_##w##x##h, opt)); \
decl_itx_fn(BF(dav1d_inv_txfm_add_dct_flipadst_##w##x##h, opt)); \
decl_itx_fn(BF(dav1d_inv_txfm_add_dct_identity_##w##x##h, opt)); \
decl_itx_fn(BF(dav1d_inv_txfm_add_adst_dct_##w##x##h, opt)); \
decl_itx_fn(BF(dav1d_inv_txfm_add_adst_adst_##w##x##h, opt)); \
decl_itx_fn(BF(dav1d_inv_txfm_add_adst_flipadst_##w##x##h, opt)); \
decl_itx_fn(BF(dav1d_inv_txfm_add_flipadst_dct_##w##x##h, opt)); \
decl_itx_fn(BF(dav1d_inv_txfm_add_flipadst_adst_##w##x##h, opt)); \
decl_itx_fn(BF(dav1d_inv_txfm_add_flipadst_flipadst_##w##x##h, opt)); \
decl_itx_fn(BF(dav1d_inv_txfm_add_identity_dct_##w##x##h, opt))

#define decl_itx16_fns(w, h, opt) \
decl_itx12_fns(w, h, opt); \
decl_itx_fn(BF(dav1d_inv_txfm_add_adst_identity_##w##x##h, opt)); \
decl_itx_fn(BF(dav1d_inv_txfm_add_flipadst_identity_##w##x##h, opt)); \
decl_itx_fn(BF(dav1d_inv_txfm_add_identity_adst_##w##x##h, opt)); \
decl_itx_fn(BF(dav1d_inv_txfm_add_identity_flipadst_##w##x##h, opt))

#define decl_itx17_fns(w, h, opt) \
decl_itx16_fns(w, h, opt); \
decl_itx_fn(BF(dav1d_inv_txfm_add_wht_wht_##w##x##h, opt))

#define decl_itx_fns(ext) \
decl_itx17_fns( 4,  4, ext); \
decl_itx16_fns( 4,  8, ext); \
decl_itx16_fns( 4, 16, ext); \
decl_itx16_fns( 8,  4, ext); \
decl_itx16_fns( 8,  8, ext); \
decl_itx16_fns( 8, 16, ext); \
decl_itx2_fns ( 8, 32, ext); \
decl_itx16_fns(16,  4, ext); \
decl_itx16_fns(16,  8, ext); \
decl_itx12_fns(16, 16, ext); \
decl_itx2_fns (16, 32, ext); \
decl_itx2_fns (32,  8, ext); \
decl_itx2_fns (32, 16, ext); \
decl_itx2_fns (32, 32, ext); \
decl_itx_fn(BF(dav1d_inv_txfm_add_dct_dct_16x64, ext)); \
decl_itx_fn(BF(dav1d_inv_txfm_add_dct_dct_32x64, ext)); \
decl_itx_fn(BF(dav1d_inv_txfm_add_dct_dct_64x16, ext)); \
decl_itx_fn(BF(dav1d_inv_txfm_add_dct_dct_64x32, ext)); \
decl_itx_fn(BF(dav1d_inv_txfm_add_dct_dct_64x64, ext))


#define decl_itx2_bpc_fns(w, h, bpc, opt) \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_dct_dct_##w##x##h, bpc, opt)); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_identity_identity_##w##x##h, bpc, opt))

#define decl_itx12_bpc_fns(w, h, bpc, opt) \
decl_itx2_bpc_fns(w, h, bpc, opt); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_dct_adst_##w##x##h, bpc, opt)); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_dct_flipadst_##w##x##h, bpc, opt)); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_dct_identity_##w##x##h, bpc, opt)); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_adst_dct_##w##x##h, bpc, opt)); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_adst_adst_##w##x##h, bpc, opt)); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_adst_flipadst_##w##x##h, bpc, opt)); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_flipadst_dct_##w##x##h, bpc, opt)); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_flipadst_adst_##w##x##h, bpc, opt)); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_flipadst_flipadst_##w##x##h, bpc, opt)); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_identity_dct_##w##x##h, bpc, opt))

#define decl_itx16_bpc_fns(w, h, bpc, opt) \
decl_itx12_bpc_fns(w, h, bpc, opt); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_adst_identity_##w##x##h, bpc, opt)); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_flipadst_identity_##w##x##h, bpc, opt)); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_identity_adst_##w##x##h, bpc, opt)); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_identity_flipadst_##w##x##h, bpc, opt))

#define decl_itx_bpc_fns(bpc, ext) \
decl_itx16_bpc_fns( 4,  4, bpc, ext); \
decl_itx16_bpc_fns( 4,  8, bpc, ext); \
decl_itx16_bpc_fns( 4, 16, bpc, ext); \
decl_itx16_bpc_fns( 8,  4, bpc, ext); \
decl_itx16_bpc_fns( 8,  8, bpc, ext); \
decl_itx16_bpc_fns( 8, 16, bpc, ext); \
decl_itx2_bpc_fns ( 8, 32, bpc, ext); \
decl_itx16_bpc_fns(16,  4, bpc, ext); \
decl_itx16_bpc_fns(16,  8, bpc, ext); \
decl_itx12_bpc_fns(16, 16, bpc, ext); \
decl_itx2_bpc_fns (16, 32, bpc, ext); \
decl_itx2_bpc_fns (32,  8, bpc, ext); \
decl_itx2_bpc_fns (32, 16, bpc, ext); \
decl_itx2_bpc_fns (32, 32, bpc, ext); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_dct_dct_16x64, bpc, ext)); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_dct_dct_32x64, bpc, ext)); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_dct_dct_64x16, bpc, ext)); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_dct_dct_64x32, bpc, ext)); \
decl_itx_fn(BF_BPC(dav1d_inv_txfm_add_dct_dct_64x64, bpc, ext))

decl_itx_fns(avx512icl);
decl_itx_bpc_fns(10, avx512icl);
decl_itx_fns(avx2);
decl_itx_bpc_fns(10, avx2);
decl_itx_bpc_fns(12, avx2);
decl_itx_fns(sse4);
decl_itx_fns(ssse3);
decl_itx_fn(dav1d_inv_txfm_add_wht_wht_4x4_16bpc_avx2);
decl_itx_fn(BF(dav1d_inv_txfm_add_wht_wht_4x4, sse2));

static ALWAYS_INLINE void itx_dsp_init_x86(Dav1dInvTxfmDSPContext *const c, const int bpc) {
#define assign_itx_fn(pfx, w, h, type, type_enum, ext) \
    c->itxfm_add[pfx##TX_##w##X##h][type_enum] = \
        BF(dav1d_inv_txfm_add_##type##_##w##x##h, ext)

#define assign_itx1_fn(pfx, w, h, ext) \
    assign_itx_fn(pfx, w, h, dct_dct,           DCT_DCT,           ext)

#define assign_itx2_fn(pfx, w, h, ext) \
    assign_itx1_fn(pfx, w, h, ext); \
    assign_itx_fn(pfx, w, h, identity_identity, IDTX,              ext)

#define assign_itx12_fn(pfx, w, h, ext) \
    assign_itx2_fn(pfx, w, h, ext); \
    assign_itx_fn(pfx, w, h, dct_adst,          ADST_DCT,          ext); \
    assign_itx_fn(pfx, w, h, dct_flipadst,      FLIPADST_DCT,      ext); \
    assign_itx_fn(pfx, w, h, dct_identity,      H_DCT,             ext); \
    assign_itx_fn(pfx, w, h, adst_dct,          DCT_ADST,          ext); \
    assign_itx_fn(pfx, w, h, adst_adst,         ADST_ADST,         ext); \
    assign_itx_fn(pfx, w, h, adst_flipadst,     FLIPADST_ADST,     ext); \
    assign_itx_fn(pfx, w, h, flipadst_dct,      DCT_FLIPADST,      ext); \
    assign_itx_fn(pfx, w, h, flipadst_adst,     ADST_FLIPADST,     ext); \
    assign_itx_fn(pfx, w, h, flipadst_flipadst, FLIPADST_FLIPADST, ext); \
    assign_itx_fn(pfx, w, h, identity_dct,      V_DCT,             ext)

#define assign_itx16_fn(pfx, w, h, ext) \
    assign_itx12_fn(pfx, w, h, ext); \
    assign_itx_fn(pfx, w, h, adst_identity,     H_ADST,            ext); \
    assign_itx_fn(pfx, w, h, flipadst_identity, H_FLIPADST,        ext); \
    assign_itx_fn(pfx, w, h, identity_adst,     V_ADST,            ext); \
    assign_itx_fn(pfx, w, h, identity_flipadst, V_FLIPADST,        ext)

#define assign_itx17_fn(pfx, w, h, ext) \
    assign_itx16_fn(pfx, w, h, ext); \
    assign_itx_fn(pfx, w, h, wht_wht,           WHT_WHT,           ext)


#define assign_itx_bpc_fn(pfx, w, h, type, type_enum, bpc, ext) \
    c->itxfm_add[pfx##TX_##w##X##h][type_enum] = \
        BF_BPC(dav1d_inv_txfm_add_##type##_##w##x##h, bpc, ext)

#define assign_itx1_bpc_fn(pfx, w, h, bpc, ext) \
    assign_itx_bpc_fn(pfx, w, h, dct_dct,           DCT_DCT,           bpc, ext)

#define assign_itx2_bpc_fn(pfx, w, h, bpc, ext) \
    assign_itx1_bpc_fn(pfx, w, h, bpc, ext); \
    assign_itx_bpc_fn(pfx, w, h, identity_identity, IDTX,              bpc, ext)

#define assign_itx12_bpc_fn(pfx, w, h, bpc, ext) \
    assign_itx2_bpc_fn(pfx, w, h, bpc, ext); \
    assign_itx_bpc_fn(pfx, w, h, dct_adst,          ADST_DCT,          bpc, ext); \
    assign_itx_bpc_fn(pfx, w, h, dct_flipadst,      FLIPADST_DCT,      bpc, ext); \
    assign_itx_bpc_fn(pfx, w, h, dct_identity,      H_DCT,             bpc, ext); \
    assign_itx_bpc_fn(pfx, w, h, adst_dct,          DCT_ADST,          bpc, ext); \
    assign_itx_bpc_fn(pfx, w, h, adst_adst,         ADST_ADST,         bpc, ext); \
    assign_itx_bpc_fn(pfx, w, h, adst_flipadst,     FLIPADST_ADST,     bpc, ext); \
    assign_itx_bpc_fn(pfx, w, h, flipadst_dct,      DCT_FLIPADST,      bpc, ext); \
    assign_itx_bpc_fn(pfx, w, h, flipadst_adst,     ADST_FLIPADST,     bpc, ext); \
    assign_itx_bpc_fn(pfx, w, h, flipadst_flipadst, FLIPADST_FLIPADST, bpc, ext); \
    assign_itx_bpc_fn(pfx, w, h, identity_dct,      V_DCT,             bpc, ext)

#define assign_itx16_bpc_fn(pfx, w, h, bpc, ext) \
    assign_itx12_bpc_fn(pfx, w, h, bpc, ext); \
    assign_itx_bpc_fn(pfx, w, h, adst_identity,     H_ADST,            bpc, ext); \
    assign_itx_bpc_fn(pfx, w, h, flipadst_identity, H_FLIPADST,        bpc, ext); \
    assign_itx_bpc_fn(pfx, w, h, identity_adst,     V_ADST,            bpc, ext); \
    assign_itx_bpc_fn(pfx, w, h, identity_flipadst, V_FLIPADST,        bpc, ext)

    const unsigned flags = dav1d_get_cpu_flags();

    if (!(flags & DAV1D_X86_CPU_FLAG_SSE2)) return;

    assign_itx_fn(, 4, 4, wht_wht, WHT_WHT, sse2);

    if (!(flags & DAV1D_X86_CPU_FLAG_SSSE3)) return;

#if BITDEPTH == 8
    assign_itx16_fn(,   4,  4, ssse3);
    assign_itx16_fn(R,  4,  8, ssse3);
    assign_itx16_fn(R,  8,  4, ssse3);
    assign_itx16_fn(,   8,  8, ssse3);
    assign_itx16_fn(R,  4, 16, ssse3);
    assign_itx16_fn(R, 16,  4, ssse3);
    assign_itx16_fn(R,  8, 16, ssse3);
    assign_itx16_fn(R, 16,  8, ssse3);
    assign_itx12_fn(,  16, 16, ssse3);
    assign_itx2_fn (R,  8, 32, ssse3);
    assign_itx2_fn (R, 32,  8, ssse3);
    assign_itx2_fn (R, 16, 32, ssse3);
    assign_itx2_fn (R, 32, 16, ssse3);
    assign_itx2_fn (,  32, 32, ssse3);
    assign_itx1_fn (R, 16, 64, ssse3);
    assign_itx1_fn (R, 32, 64, ssse3);
    assign_itx1_fn (R, 64, 16, ssse3);
    assign_itx1_fn (R, 64, 32, ssse3);
    assign_itx1_fn ( , 64, 64, ssse3);
#endif

    if (!(flags & DAV1D_X86_CPU_FLAG_SSE41)) return;

#if BITDEPTH == 16
    if (bpc == 10) {
        assign_itx16_fn(,   4,  4, sse4);
        assign_itx16_fn(R,  4,  8, sse4);
        assign_itx16_fn(R,  4, 16, sse4);
        assign_itx16_fn(R,  8,  4, sse4);
        assign_itx16_fn(,   8,  8, sse4);
        assign_itx16_fn(R,  8, 16, sse4);
        assign_itx16_fn(R, 16,  4, sse4);
        assign_itx16_fn(R, 16,  8, sse4);
        assign_itx12_fn(,  16, 16, sse4);
        assign_itx2_fn (R,  8, 32, sse4);
        assign_itx2_fn (R, 32,  8, sse4);
        assign_itx2_fn (R, 16, 32, sse4);
        assign_itx2_fn (R, 32, 16, sse4);
        assign_itx2_fn (,  32, 32, sse4);
        assign_itx1_fn (R, 16, 64, sse4);
        assign_itx1_fn (R, 32, 64, sse4);
        assign_itx1_fn (R, 64, 16, sse4);
        assign_itx1_fn (R, 64, 32, sse4);
        assign_itx1_fn (,  64, 64, sse4);
    }
#endif

#if ARCH_X86_64
    if (!(flags & DAV1D_X86_CPU_FLAG_AVX2)) return;

    assign_itx_fn(, 4, 4, wht_wht, WHT_WHT, avx2);

#if BITDEPTH == 8
    assign_itx16_fn( ,  4,  4, avx2);
    assign_itx16_fn(R,  4,  8, avx2);
    assign_itx16_fn(R,  4, 16, avx2);
    assign_itx16_fn(R,  8,  4, avx2);
    assign_itx16_fn( ,  8,  8, avx2);
    assign_itx16_fn(R,  8, 16, avx2);
    assign_itx2_fn (R,  8, 32, avx2);
    assign_itx16_fn(R, 16,  4, avx2);
    assign_itx16_fn(R, 16,  8, avx2);
    assign_itx12_fn( , 16, 16, avx2);
    assign_itx2_fn (R, 16, 32, avx2);
    assign_itx1_fn (R, 16, 64, avx2);
    assign_itx2_fn (R, 32,  8, avx2);
    assign_itx2_fn (R, 32, 16, avx2);
    assign_itx2_fn ( , 32, 32, avx2);
    assign_itx1_fn (R, 32, 64, avx2);
    assign_itx1_fn (R, 64, 16, avx2);
    assign_itx1_fn (R, 64, 32, avx2);
    assign_itx1_fn ( , 64, 64, avx2);
#else
    if (bpc == 10) {
        assign_itx16_bpc_fn( ,  4,  4, 10, avx2);
        assign_itx16_bpc_fn(R,  4,  8, 10, avx2);
        assign_itx16_bpc_fn(R,  4, 16, 10, avx2);
        assign_itx16_bpc_fn(R,  8,  4, 10, avx2);
        assign_itx16_bpc_fn( ,  8,  8, 10, avx2);
        assign_itx16_bpc_fn(R,  8, 16, 10, avx2);
        assign_itx2_bpc_fn (R,  8, 32, 10, avx2);
        assign_itx16_bpc_fn(R, 16,  4, 10, avx2);
        assign_itx16_bpc_fn(R, 16,  8, 10, avx2);
        assign_itx12_bpc_fn( , 16, 16, 10, avx2);
        assign_itx2_bpc_fn (R, 16, 32, 10, avx2);
        assign_itx1_bpc_fn (R, 16, 64, 10, avx2);
        assign_itx2_bpc_fn (R, 32,  8, 10, avx2);
        assign_itx2_bpc_fn (R, 32, 16, 10, avx2);
        assign_itx2_bpc_fn ( , 32, 32, 10, avx2);
        assign_itx1_bpc_fn (R, 32, 64, 10, avx2);
        assign_itx1_bpc_fn (R, 64, 16, 10, avx2);
        assign_itx1_bpc_fn (R, 64, 32, 10, avx2);
        assign_itx1_bpc_fn ( , 64, 64, 10, avx2);
    } else {
        assign_itx16_bpc_fn( ,  4,  4, 12, avx2);
        assign_itx16_bpc_fn(R,  4,  8, 12, avx2);
        assign_itx16_bpc_fn(R,  4, 16, 12, avx2);
        assign_itx16_bpc_fn(R,  8,  4, 12, avx2);
        assign_itx16_bpc_fn( ,  8,  8, 12, avx2);
        assign_itx16_bpc_fn(R,  8, 16, 12, avx2);
        assign_itx2_bpc_fn (R,  8, 32, 12, avx2);
        assign_itx16_bpc_fn(R, 16,  4, 12, avx2);
        assign_itx16_bpc_fn(R, 16,  8, 12, avx2);
        assign_itx12_bpc_fn( , 16, 16, 12, avx2);
        assign_itx2_bpc_fn (R, 32,  8, 12, avx2);
    }
#endif

    if (!(flags & DAV1D_X86_CPU_FLAG_AVX512ICL)) return;

#if BITDEPTH == 8
    assign_itx16_fn( ,  4,  4, avx512icl); // no wht
    assign_itx16_fn(R,  4,  8, avx512icl);
    assign_itx16_fn(R,  4, 16, avx512icl);
    assign_itx16_fn(R,  8,  4, avx512icl);
    assign_itx16_fn( ,  8,  8, avx512icl);
    assign_itx16_fn(R,  8, 16, avx512icl);
    assign_itx2_fn (R,  8, 32, avx512icl);
    assign_itx16_fn(R, 16,  4, avx512icl);
    assign_itx16_fn(R, 16,  8, avx512icl);
    assign_itx12_fn( , 16, 16, avx512icl);
    assign_itx2_fn (R, 16, 32, avx512icl);
    assign_itx1_fn (R, 16, 64, avx512icl);
    assign_itx2_fn (R, 32,  8, avx512icl);
    assign_itx2_fn (R, 32, 16, avx512icl);
    assign_itx2_fn ( , 32, 32, avx512icl);
    assign_itx1_fn (R, 32, 64, avx512icl);
    assign_itx1_fn (R, 64, 16, avx512icl);
    assign_itx1_fn (R, 64, 32, avx512icl);
    assign_itx1_fn ( , 64, 64, avx512icl);
#else
    if (bpc == 10) {
        assign_itx16_bpc_fn( ,  8,  8, 10, avx512icl);
        assign_itx16_bpc_fn(R,  8, 16, 10, avx512icl);
        assign_itx2_bpc_fn (R,  8, 32, 10, avx512icl);
        assign_itx16_bpc_fn(R, 16,  8, 10, avx512icl);
        assign_itx12_bpc_fn( , 16, 16, 10, avx512icl);
        assign_itx2_bpc_fn (R, 16, 32, 10, avx512icl);
        assign_itx2_bpc_fn (R, 32,  8, 10, avx512icl);
        assign_itx2_bpc_fn (R, 32, 16, 10, avx512icl);
        assign_itx2_bpc_fn ( , 32, 32, 10, avx512icl);
    }
#endif
#endif
}