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FFmpeg/libavcodec/vvc/vvc_itx_1d.c

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vvcdec: add inv transform 1d Co-authored-by: Xu Mu <toxumu@outlook.com> Co-authored-by: Frank Plowman <post@frankplowman.com> Co-authored-by: Shaun Loo <shaunloo10@gmail.com> Co-authored-by: Wu Jianhua <toqsxw@outlook.com>
2023-12-05 16:45:13 +02:00
/*
* VVC 1D transform
*
* Copyright (C) 2023 Nuo Mi
*
* 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
*/
/* The copyright in this software is being made available under the BSD
* License, included below. This software may be subject to other third party
* and contributor rights, including patent rights, and no such rights are
* granted under this license.
*
* Copyright (c) 2010-2021, ITU/ISO/IEC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of the ITU/ISO/IEC nor the names of its contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* 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 HOLDER 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.
*/
/* optimizaed with partial butterfly, see Hung C-Y, Landman P (1997)
Compact inverse discrete cosine transform circuit for MPEG video decoding.
*/
#include "vvc_data.h"
#include "vvc_itx_1d.h"
#include "libavutil/avutil.h"
#define G2(m) ((nz > 2) ? (m) : 0)
#define G4(m) ((nz > 4) ? (m) : 0)
#define G8(m) ((nz > 8) ? (m) : 0)
#define G16(m) ((nz > 16) ? (m) : 0)
/*
transmatrix[2][2] = {
{ a, a },
{ a, -a },
}
*/
void ff_vvc_inv_dct2_2(int *coeffs, const ptrdiff_t stride, const size_t nz)
{
const int a = 64;
const int x0 = coeffs[0 * stride], x1 = coeffs[1 * stride];
coeffs[0 * stride] = a * (x0 + x1);
coeffs[1 * stride] = a * (x0 - x1);
}
/*
transmatrix[4][4] = {
{ a, a, a, a},
{ b, c, -c, -b},
{ a, -a, -a, a},
{ c, -b, b, -c},
}
*/
void ff_vvc_inv_dct2_4(int *coeffs, const ptrdiff_t stride, const size_t nz)
{
const int a = 64, b = 83, c = 36;
const int x0 = coeffs[0 * stride], x1 = coeffs[1 * stride];
const int x2 = coeffs[2 * stride], x3 = coeffs[3 * stride];
const int E[2] = {
a * (x0 + G2(+x2)),
a * (x0 + G2(-x2)),
};
const int O[2] = {
b * x1 + G2(+c * x3),
c * x1 + G2(-b * x3),
};
coeffs[0 * stride] = E[0] + O[0];
coeffs[1 * stride] = E[1] + O[1];
coeffs[2 * stride] = E[1] - O[1];
coeffs[3 * stride] = E[0] - O[0];
}
/*
transmatrix[8][8] = {
{ a, a, a, a, a, a, a, a},
{ d, e, f, g, -g, -f, -e, -d},
{ b, c, -c, -b, -b, -c, c, b},
{ e, -g, -d, -f, f, d, g, -e},
{ a, -a, -a, a, a, -a, -a, a},
{ f, -d, g, e, -e, -g, d, -f},
{ c, -b, b, -c, -c, b, -b, c},
{ g, -f, e, -d, d, -e, f, -g},
}
*/
void ff_vvc_inv_dct2_8(int *coeffs, const ptrdiff_t stride, const size_t nz)
{
const int a = 64, b = 83, c = 36, d = 89, e = 75, f = 50, g = 18;
const int x0 = coeffs[0 * stride], x1 = coeffs[1 * stride];
const int x2 = coeffs[2 * stride], x3 = coeffs[3 * stride];
const int x4 = coeffs[4 * stride], x5 = coeffs[5 * stride];
const int x6 = coeffs[6 * stride], x7 = coeffs[7 * stride];
const int EE[2] = {
a * (x0 + G4(+x4)),
a * (x0 + G4(-x4)),
};
const int EO[2] = {
G2(b * x2) + G4(+c * x6),
G2(c * x2) + G4(-b * x6),
};
const int E[4] = {
EE[0] + EO[0], EE[1] + EO[1],
EE[1] - EO[1], EE[0] - EO[0],
};
const int O[4] = {
d * x1 + G2(+e * x3) + G4(+f * x5 + g * x7),
e * x1 + G2(-g * x3) + G4(-d * x5 - f * x7),
f * x1 + G2(-d * x3) + G4(+g * x5 + e * x7),
g * x1 + G2(-f * x3) + G4(+e * x5 - d * x7),
};
coeffs[0 * stride] = E[0] + O[0];
coeffs[1 * stride] = E[1] + O[1];
coeffs[2 * stride] = E[2] + O[2];
coeffs[3 * stride] = E[3] + O[3];
coeffs[4 * stride] = E[3] - O[3];
coeffs[5 * stride] = E[2] - O[2];
coeffs[6 * stride] = E[1] - O[1];
coeffs[7 * stride] = E[0] - O[0];
}
/*
transmatrix[16][16] = {
{ a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a},
{ h, i, j, k, l, m, n, o, -o, -n, -m, -l, -k, -j, -i, -h},
{ d, e, f, g, -g, -f, -e, -d, -d, -e, -f, -g, g, f, e, d},
{ i, l, o, -m, -j, -h, -k, -n, n, k, h, j, m, -o, -l, -i},
{ b, c, -c, -b, -b, -c, c, b, b, c, -c, -b, -b, -c, c, b},
{ j, o, -k, -i, -n, l, h, m, -m, -h, -l, n, i, k, -o, -j},
{ e, -g, -d, -f, f, d, g, -e, -e, g, d, f, -f, -d, -g, e},
{ k, -m, -i, o, h, n, -j, -l, l, j, -n, -h, -o, i, m, -k},
{ a, -a, -a, a, a, -a, -a, a, a, -a, -a, a, a, -a, -a, a},
{ l, -j, -n, h, -o, -i, m, k, -k, -m, i, o, -h, n, j, -l},
{ f, -d, g, e, -e, -g, d, -f, -f, d, -g, -e, e, g, -d, f},
{ m, -h, l, n, -i, k, o, -j, j, -o, -k, i, -n, -l, h, -m},
{ c, -b, b, -c, -c, b, -b, c, c, -b, b, -c, -c, b, -b, c},
{ n, -k, h, -j, m, o, -l, i, -i, l, -o, -m, j, -h, k, -n},
{ g, -f, e, -d, d, -e, f, -g, -g, f, -e, d, -d, e, -f, g},
{ o, -n, m, -l, k, -j, i, -h, h, -i, j, -k, l, -m, n, -o},
}
*/
void ff_vvc_inv_dct2_16(int *coeffs, const ptrdiff_t stride, const size_t nz)
{
const int a = 64, b = 83, c = 36, d = 89, e = 75, f = 50, g = 18, h = 90;
const int i = 87, j = 80, k = 70, l = 57, m = 43, n = 25, o = 9;
const int x0 = coeffs[0 * stride], x1 = coeffs[1 * stride];
const int x2 = coeffs[2 * stride], x3 = coeffs[3 * stride];
const int x4 = coeffs[4 * stride], x5 = coeffs[5 * stride];
const int x6 = coeffs[6 * stride], x7 = coeffs[7 * stride];
const int x8 = coeffs[8 * stride], x9 = coeffs[9 * stride];
const int x10 = coeffs[10 * stride], x11 = coeffs[11 * stride];
const int x12 = coeffs[12 * stride], x13 = coeffs[13 * stride];
const int x14 = coeffs[14 * stride], x15 = coeffs[15 * stride];
const int EEE[2] = {
a * (x0 + G8(+x8)),
a * (x0 + G8(-x8)),
};
const int EEO[2] = {
G4(b * x4) + G8(+c * x12),
G4(c * x4) + G8(-b * x12),
};
const int EE[4] = {
EEE[0] + EEO[0], EEE[1] + EEO[1],
EEE[1] - EEO[1], EEE[0] - EEO[0],
};
const int EO[4] = {
G2(d * x2) + G4(+e * x6) + G8(+f * x10 + g * x14),
G2(e * x2) + G4(-g * x6) + G8(-d * x10 - f * x14),
G2(f * x2) + G4(-d * x6) + G8(+g * x10 + e * x14),
G2(g * x2) + G4(-f * x6) + G8(+e * x10 - d * x14),
};
const int E[8] = {
EE[0] + EO[0], EE[1] + EO[1], EE[2] + EO[2], EE[3] + EO[3],
EE[3] - EO[3], EE[2] - EO[2], EE[1] - EO[1], EE[0] - EO[0],
};
const int O[8] = {
h * x1 + G2(+i * x3) + G4(+j * x5 + k * x7) + G8(+l * x9 + m * x11 + n * x13 + o * x15),
i * x1 + G2(+l * x3) + G4(+o * x5 - m * x7) + G8(-j * x9 - h * x11 - k * x13 - n * x15),
j * x1 + G2(+o * x3) + G4(-k * x5 - i * x7) + G8(-n * x9 + l * x11 + h * x13 + m * x15),
k * x1 + G2(-m * x3) + G4(-i * x5 + o * x7) + G8(+h * x9 + n * x11 - j * x13 - l * x15),
l * x1 + G2(-j * x3) + G4(-n * x5 + h * x7) + G8(-o * x9 - i * x11 + m * x13 + k * x15),
m * x1 + G2(-h * x3) + G4(+l * x5 + n * x7) + G8(-i * x9 + k * x11 + o * x13 - j * x15),
n * x1 + G2(-k * x3) + G4(+h * x5 - j * x7) + G8(+m * x9 + o * x11 - l * x13 + i * x15),
o * x1 + G2(-n * x3) + G4(+m * x5 - l * x7) + G8(+k * x9 - j * x11 + i * x13 - h * x15),
};
coeffs[0 * stride] = E[0] + O[0];
coeffs[1 * stride] = E[1] + O[1];
coeffs[2 * stride] = E[2] + O[2];
coeffs[3 * stride] = E[3] + O[3];
coeffs[4 * stride] = E[4] + O[4];
coeffs[5 * stride] = E[5] + O[5];
coeffs[6 * stride] = E[6] + O[6];
coeffs[7 * stride] = E[7] + O[7];
coeffs[8 * stride] = E[7] - O[7];
coeffs[9 * stride] = E[6] - O[6];
coeffs[10 * stride] = E[5] - O[5];
coeffs[11 * stride] = E[4] - O[4];
coeffs[12 * stride] = E[3] - O[3];
coeffs[13 * stride] = E[2] - O[2];
coeffs[14 * stride] = E[1] - O[1];
coeffs[15 * stride] = E[0] - O[0];
}
/*
transMatrix[32][32] = {
{ a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a, a},
{ p, q, r, s, t, u, v, w, x, y, z, A, B, C, D, E, -E, -D, -C, -B, -A, -z, -y, -x, -w, -v, -u, -t, -s, -r, -q, -p},
{ h, i, j, k, l, m, n, o, -o, -n, -m, -l, -k, -j, -i, -h, -h, -i, -j, -k, -l, -m, -n, -o, o, n, m, l, k, j, i, h},
{ q, t, w, z, C, -E, -B, -y, -v, -s, -p, -r, -u, -x, -A, -D, D, A, x, u, r, p, s, v, y, B, E, -C, -z, -w, -t, -q},
{ d, e, f, g, -g, -f, -e, -d, -d, -e, -f, -g, g, f, e, d, d, e, f, g, -g, -f, -e, -d, -d, -e, -f, -g, g, f, e, d},
{ r, w, B, -D, -y, -t, -p, -u, -z, -E, A, v, q, s, x, C, -C, -x, -s, -q, -v, -A, E, z, u, p, t, y, D, -B, -w, -r},
{ i, l, o, -m, -j, -h, -k, -n, n, k, h, j, m, -o, -l, -i, -i, -l, -o, m, j, h, k, n, -n, -k, -h, -j, -m, o, l, i},
{ s, z, -D, -w, -p, -v, -C, A, t, r, y, -E, -x, -q, -u, -B, B, u, q, x, E, -y, -r, -t, -A, C, v, p, w, D, -z, -s},
{ b, c, -c, -b, -b, -c, c, b, b, c, -c, -b, -b, -c, c, b, b, c, -c, -b, -b, -c, c, b, b, c, -c, -b, -b, -c, c, b},
{ t, C, -y, -p, -x, D, u, s, B, -z, -q, -w, E, v, r, A, -A, -r, -v, -E, w, q, z, -B, -s, -u, -D, x, p, y, -C, -t},
{ j, o, -k, -i, -n, l, h, m, -m, -h, -l, n, i, k, -o, -j, -j, -o, k, i, n, -l, -h, -m, m, h, l, -n, -i, -k, o, j},
{ u, -E, -t, -v, D, s, w, -C, -r, -x, B, q, y, -A, -p, -z, z, p, A, -y, -q, -B, x, r, C, -w, -s, -D, v, t, E, -u},
{ e, -g, -d, -f, f, d, g, -e, -e, g, d, f, -f, -d, -g, e, e, -g, -d, -f, f, d, g, -e, -e, g, d, f, -f, -d, -g, e},
{ v, -B, -p, -C, u, w, -A, -q, -D, t, x, -z, -r, -E, s, y, -y, -s, E, r, z, -x, -t, D, q, A, -w, -u, C, p, B, -v},
{ k, -m, -i, o, h, n, -j, -l, l, j, -n, -h, -o, i, m, -k, -k, m, i, -o, -h, -n, j, l, -l, -j, n, h, o, -i, -m, k},
{ w, -y, -u, A, s, -C, -q, E, p, D, -r, -B, t, z, -v, -x, x, v, -z, -t, B, r, -D, -p, -E, q, C, -s, -A, u, y, -w},
{ a, -a, -a, a, a, -a, -a, a, a, -a, -a, a, a, -a, -a, a, a, -a, -a, a, a, -a, -a, a, a, -a, -a, a, a, -a, -a, a},
{ x, -v, -z, t, B, -r, -D, p, -E, -q, C, s, -A, -u, y, w, -w, -y, u, A, -s, -C, q, E, -p, D, r, -B, -t, z, v, -x},
{ l, -j, -n, h, -o, -i, m, k, -k, -m, i, o, -h, n, j, -l, -l, j, n, -h, o, i, -m, -k, k, m, -i, -o, h, -n, -j, l},
{ y, -s, -E, r, -z, -x, t, D, -q, A, w, -u, -C, p, -B, -v, v, B, -p, C, u, -w, -A, q, -D, -t, x, z, -r, E, s, -y},
{ f, -d, g, e, -e, -g, d, -f, -f, d, -g, -e, e, g, -d, f, f, -d, g, e, -e, -g, d, -f, -f, d, -g, -e, e, g, -d, f},
{ z, -p, A, y, -q, B, x, -r, C, w, -s, D, v, -t, E, u, -u, -E, t, -v, -D, s, -w, -C, r, -x, -B, q, -y, -A, p, -z},
{ m, -h, l, n, -i, k, o, -j, j, -o, -k, i, -n, -l, h, -m, -m, h, -l, -n, i, -k, -o, j, -j, o, k, -i, n, l, -h, m},
{ A, -r, v, -E, -w, q, -z, -B, s, -u, D, x, -p, y, C, -t, t, -C, -y, p, -x, -D, u, -s, B, z, -q, w, E, -v, r, -A},
{ c, -b, b, -c, -c, b, -b, c, c, -b, b, -c, -c, b, -b, c, c, -b, b, -c, -c, b, -b, c, c, -b, b, -c, -c, b, -b, c},
{ B, -u, q, -x, E, y, -r, t, -A, -C, v, -p, w, -D, -z, s, -s, z, D, -w, p, -v, C, A, -t, r, -y, -E, x, -q, u, -B},
{ n, -k, h, -j, m, o, -l, i, -i, l, -o, -m, j, -h, k, -n, -n, k, -h, j, -m, -o, l, -i, i, -l, o, m, -j, h, -k, n},
{ C, -x, s, -q, v, -A, -E, z, -u, p, -t, y, -D, -B, w, -r, r, -w, B, D, -y, t, -p, u, -z, E, A, -v, q, -s, x, -C},
{ g, -f, e, -d, d, -e, f, -g, -g, f, -e, d, -d, e, -f, g, g, -f, e, -d, d, -e, f, -g, -g, f, -e, d, -d, e, -f, g},
{ D, -A, x, -u, r, -p, s, -v, y, -B, E, C, -z, w, -t, q, -q, t, -w, z, -C, -E, B, -y, v, -s, p, -r, u, -x, A, -D},
{ o, -n, m, -l, k, -j, i, -h, h, -i, j, -k, l, -m, n, -o, -o, n, -m, l, -k, j, -i, h, -h, i, -j, k, -l, m, -n, o},
{ E, -D, C, -B, A, -z, y, -x, w, -v, u, -t, s, -r, q, -p, p, -q, r, -s, t, -u, v, -w, x, -y, z, -A, B, -C, D, -E},
}
*/
void ff_vvc_inv_dct2_32(int *coeffs, const ptrdiff_t stride, const size_t nz)
{
const int a = 64, b = 83, c = 36, d = 89, e = 75, f = 50, g = 18, h = 90;
const int i = 87, j = 80, k = 70, l = 57, m = 43, n = 25, o = 9, p = 90;
const int q = 90, r = 88, s = 85, t = 82, u = 78, v = 73, w = 67, x = 61;
const int y = 54, z = 46, A = 38, B = 31, C = 22, D = 13, E_= 4;
const int x0 = coeffs[0 * stride], x1 = coeffs[1 * stride];
const int x2 = coeffs[2 * stride], x3 = coeffs[3 * stride];
const int x4 = coeffs[4 * stride], x5 = coeffs[5 * stride];
const int x6 = coeffs[6 * stride], x7 = coeffs[7 * stride];
const int x8 = coeffs[8 * stride], x9 = coeffs[9 * stride];
const int x10 = coeffs[10 * stride], x11 = coeffs[11 * stride];
const int x12 = coeffs[12 * stride], x13 = coeffs[13 * stride];
const int x14 = coeffs[14 * stride], x15 = coeffs[15 * stride];
const int x16 = coeffs[16 * stride], x17 = coeffs[17 * stride];
const int x18 = coeffs[18 * stride], x19 = coeffs[19 * stride];
const int x20 = coeffs[20 * stride], x21 = coeffs[21 * stride];
const int x22 = coeffs[22 * stride], x23 = coeffs[23 * stride];
const int x24 = coeffs[24 * stride], x25 = coeffs[25 * stride];
const int x26 = coeffs[26 * stride], x27 = coeffs[27 * stride];
const int x28 = coeffs[28 * stride], x29 = coeffs[29 * stride];
const int x30 = coeffs[30 * stride], x31 = coeffs[31 * stride];
const int EEEE[2] = {
a * (x0 + G16(+x16)),
a * (x0 + G16(-x16)),
};
const int EEEO[2] = {
G8(b * x8) + G16(+c * x24),
G8(c * x8) + G16(-b * x24),
};
const int EEE[4] = {
EEEE[0] + EEEO[0], EEEE[1] + EEEO[1],
EEEE[1] - EEEO[1], EEEE[0] - EEEO[0],
};
const int EEO[4] = {
G4(d * x4) + G8(+e * x12) + G16(+f * x20 + g * x28),
G4(e * x4) + G8(-g * x12) + G16(-d * x20 - f * x28),
G4(f * x4) + G8(-d * x12) + G16(+g * x20 + e * x28),
G4(g * x4) + G8(-f * x12) + G16(+e * x20 - d * x28),
};
const int EE[8] = {
EEE[0] + EEO[0], EEE[1] + EEO[1], EEE[2] + EEO[2], EEE[3] + EEO[3],
EEE[3] - EEO[3], EEE[2] - EEO[2], EEE[1] - EEO[1], EEE[0] - EEO[0],
};
const int EO[8] = {
G2(h * x2) + G4(+i * x6) + G8(+ j * x10 + k * x14) + G16(+l * x18 + m * x22 + n * x26 + o * x30),
G2(i * x2) + G4(+l * x6) + G8(+ o * x10 - m * x14) + G16(-j * x18 - h * x22 - k * x26 - n * x30),
G2(j * x2) + G4(+o * x6) + G8(- k * x10 - i * x14) + G16(-n * x18 + l * x22 + h * x26 + m * x30),
G2(k * x2) + G4(-m * x6) + G8(- i * x10 + o * x14) + G16(+h * x18 + n * x22 - j * x26 - l * x30),
G2(l * x2) + G4(-j * x6) + G8(- n * x10 + h * x14) + G16(-o * x18 - i * x22 + m * x26 + k * x30),
G2(m * x2) + G4(-h * x6) + G8(+ l * x10 + n * x14) + G16(-i * x18 + k * x22 + o * x26 - j * x30),
G2(n * x2) + G4(-k * x6) + G8(+ h * x10 - j * x14) + G16(+m * x18 + o * x22 - l * x26 + i * x30),
G2(o * x2) + G4(-n * x6) + G8(+ m * x10 - l * x14) + G16(+k * x18 - j * x22 + i * x26 - h * x30),
};
const int E[16] = {
EE[0] + EO[0], EE[1] + EO[1], EE[2] + EO[2], EE[3] + EO[3], EE[4] + EO[4], EE[5] + EO[5], EE[6] + EO[6], EE[7] + EO[7],
EE[7] - EO[7], EE[6] - EO[6], EE[5] - EO[5], EE[4] - EO[4], EE[3] - EO[3], EE[2] - EO[2], EE[1] - EO[1], EE[0] - EO[0],
};
const int O[16] = {
p * x1 + G2(+q * x3) + G4(+r * x5 + s * x7) + G8(+t * x9 + u * x11 + v * x13 + w * x15) + G16(+x * x17 + y * x19 + z * x21 + A * x23 + B * x25 + C * x27 + D * x29 + E_* x31),
q * x1 + G2(+t * x3) + G4(+w * x5 + z * x7) + G8(+C * x9 - E_* x11 - B * x13 - y * x15) + G16(-v * x17 - s * x19 - p * x21 - r * x23 - u * x25 - x * x27 - A * x29 - D * x31),
r * x1 + G2(+w * x3) + G4(+B * x5 - D * x7) + G8(-y * x9 - t * x11 - p * x13 - u * x15) + G16(-z * x17 - E_* x19 + A * x21 + v * x23 + q * x25 + s * x27 + x * x29 + C * x31),
s * x1 + G2(+z * x3) + G4(-D * x5 - w * x7) + G8(-p * x9 - v * x11 - C * x13 + A * x15) + G16(+t * x17 + r * x19 + y * x21 - E_* x23 - x * x25 - q * x27 - u * x29 - B * x31),
t * x1 + G2(+C * x3) + G4(-y * x5 - p * x7) + G8(-x * x9 + D * x11 + u * x13 + s * x15) + G16(+B * x17 - z * x19 - q * x21 - w * x23 + E_* x25 + v * x27 + r * x29 + A * x31),
u * x1 + G2(-E_* x3) + G4(-t * x5 - v * x7) + G8(+D * x9 + s * x11 + w * x13 - C * x15) + G16(-r * x17 - x * x19 + B * x21 + q * x23 + y * x25 - A * x27 - p * x29 - z * x31),
v * x1 + G2(-B * x3) + G4(-p * x5 - C * x7) + G8(+u * x9 + w * x11 - A * x13 - q * x15) + G16(-D * x17 + t * x19 + x * x21 - z * x23 - r * x25 - E_* x27 + s * x29 + y * x31),
w * x1 + G2(-y * x3) + G4(-u * x5 + A * x7) + G8(+s * x9 - C * x11 - q * x13 + E_* x15) + G16(+p * x17 + D * x19 - r * x21 - B * x23 + t * x25 + z * x27 - v * x29 - x * x31),
x * x1 + G2(-v * x3) + G4(-z * x5 + t * x7) + G8(+B * x9 - r * x11 - D * x13 + p * x15) + G16(-E_* x17 - q * x19 + C * x21 + s * x23 - A * x25 - u * x27 + y * x29 + w * x31),
y * x1 + G2(-s * x3) + G4(-E_* x5 + r * x7) + G8(-z * x9 - x * x11 + t * x13 + D * x15) + G16(-q * x17 + A * x19 + w * x21 - u * x23 - C * x25 + p * x27 - B * x29 - v * x31),
z * x1 + G2(-p * x3) + G4(+A * x5 + y * x7) + G8(-q * x9 + B * x11 + x * x13 - r * x15) + G16(+C * x17 + w * x19 - s * x21 + D * x23 + v * x25 - t * x27 + E_* x29 + u * x31),
A * x1 + G2(-r * x3) + G4(+v * x5 - E_* x7) + G8(-w * x9 + q * x11 - z * x13 - B * x15) + G16(+s * x17 - u * x19 + D * x21 + x * x23 - p * x25 + y * x27 + C * x29 - t * x31),
B * x1 + G2(-u * x3) + G4(+q * x5 - x * x7) + G8(+E_* x9 + y * x11 - r * x13 + t * x15) + G16(-A * x17 - C * x19 + v * x21 - p * x23 + w * x25 - D * x27 - z * x29 + s * x31),
C * x1 + G2(-x * x3) + G4(+s * x5 - q * x7) + G8(+v * x9 - A * x11 - E_* x13 + z * x15) + G16(-u * x17 + p * x19 - t * x21 + y * x23 - D * x25 - B * x27 + w * x29 - r * x31),
D * x1 + G2(-A * x3) + G4(+x * x5 - u * x7) + G8(+r * x9 - p * x11 + s * x13 - v * x15) + G16(+y * x17 - B * x19 + E_* x21 + C * x23 - z * x25 + w * x27 - t * x29 + q * x31),
E_* x1 + G2(-D * x3) + G4(+C * x5 - B * x7) + G8(+A * x9 - z * x11 + y * x13 - x * x15) + G16(+w * x17 - v * x19 + u * x21 - t * x23 + s * x25 - r * x27 + q * x29 - p * x31),
};
coeffs[0 * stride] = E[0] + O[0];
coeffs[1 * stride] = E[1] + O[1];
coeffs[2 * stride] = E[2] + O[2];
coeffs[3 * stride] = E[3] + O[3];
coeffs[4 * stride] = E[4] + O[4];
coeffs[5 * stride] = E[5] + O[5];
coeffs[6 * stride] = E[6] + O[6];
coeffs[7 * stride] = E[7] + O[7];
coeffs[8 * stride] = E[8] + O[8];
coeffs[9 * stride] = E[9] + O[9];
coeffs[10 * stride] = E[10] + O[10];
coeffs[11 * stride] = E[11] + O[11];
coeffs[12 * stride] = E[12] + O[12];
coeffs[13 * stride] = E[13] + O[13];
coeffs[14 * stride] = E[14] + O[14];
coeffs[15 * stride] = E[15] + O[15];
coeffs[16 * stride] = E[15] - O[15];
coeffs[17 * stride] = E[14] - O[14];
coeffs[18 * stride] = E[13] - O[13];
coeffs[19 * stride] = E[12] - O[12];
coeffs[20 * stride] = E[11] - O[11];
coeffs[21 * stride] = E[10] - O[10];
coeffs[22 * stride] = E[9] - O[9];
coeffs[23 * stride] = E[8] - O[8];
coeffs[24 * stride] = E[7] - O[7];
coeffs[25 * stride] = E[6] - O[6];
coeffs[26 * stride] = E[5] - O[5];
coeffs[27 * stride] = E[4] - O[4];
coeffs[28 * stride] = E[3] - O[3];
coeffs[29 * stride] = E[2] - O[2];
coeffs[30 * stride] = E[1] - O[1];
coeffs[31 * stride] = E[0] - O[0];
}
/*
transMatrix[64][64] = {
{ aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa, aa },
{ bf, bg, bh, bi, bj, bk, bl, bm, bn, bo, bp, bq, br, bs, bt, bu, bv, bw, bx, by, bz, ca, cb, cc, cd, ce, cf, cg, ch, ci, cj, ck, -ck, -cj, -ci, -ch, -cg, -cf, -ce, -cd, -cc, -cb, -ca, -bz, -by, -bx, -bw, -bv, -bu, -bt, -bs, -br, -bq, -bp, -bo, -bn, -bm, -bl, -bk, -bj, -bi, -bh, -bg, -bf },
{ ap, aq, ar, as, at, au, av, aw, ax, ay, az, ba, bb, bc, bd, be, -be, -bd, -bc, -bb, -ba, -az, -ay, -ax, -aw, -av, -au, -at, -as, -ar, -aq, -ap, -ap, -aq, -ar, -as, -at, -au, -av, -aw, -ax, -ay, -az, -ba, -bb, -bc, -bd, -be, be, bd, bc, bb, ba, az, ay, ax, aw, av, au, at, as, ar, aq, ap },
{ bg, bj, bm, bp, bs, bv, by, cb, ce, ch, ck, -ci, -cf, -cc, -bz, -bw, -bt, -bq, -bn, -bk, -bh, -bf, -bi, -bl, -bo, -br, -bu, -bx, -ca, -cd, -cg, -cj, cj, cg, cd, ca, bx, bu, br, bo, bl, bi, bf, bh, bk, bn, bq, bt, bw, bz, cc, cf, ci, -ck, -ch, -ce, -cb, -by, -bv, -bs, -bp, -bm, -bj, -bg },
{ ah, ai, aj, ak, al, am, an, ao, -ao, -an, -am, -al, -ak, -aj, -ai, -ah, -ah, -ai, -aj, -ak, -al, -am, -an, -ao, ao, an, am, al, ak, aj, ai, ah, ah, ai, aj, ak, al, am, an, ao, -ao, -an, -am, -al, -ak, -aj, -ai, -ah, -ah, -ai, -aj, -ak, -al, -am, -an, -ao, ao, an, am, al, ak, aj, ai, ah },
{ bh, bm, br, bw, cb, cg, -ck, -cf, -ca, -bv, -bq, -bl, -bg, -bi, -bn, -bs, -bx, -cc, -ch, cj, ce, bz, bu, bp, bk, bf, bj, bo, bt, by, cd, ci, -ci, -cd, -by, -bt, -bo, -bj, -bf, -bk, -bp, -bu, -bz, -ce, -cj, ch, cc, bx, bs, bn, bi, bg, bl, bq, bv, ca, cf, ck, -cg, -cb, -bw, -br, -bm, -bh },
{ aq, at, aw, az, bc, -be, -bb, -ay, -av, -as, -ap, -ar, -au, -ax, -ba, -bd, bd, ba, ax, au, ar, ap, as, av, ay, bb, be, -bc, -az, -aw, -at, -aq, -aq, -at, -aw, -az, -bc, be, bb, ay, av, as, ap, ar, au, ax, ba, bd, -bd, -ba, -ax, -au, -ar, -ap, -as, -av, -ay, -bb, -be, bc, az, aw, at, aq },
{ bi, bp, bw, cd, ck, -ce, -bx, -bq, -bj, -bh, -bo, -bv, -cc, -cj, cf, by, br, bk, bg, bn, bu, cb, ci, -cg, -bz, -bs, -bl, -bf, -bm, -bt, -ca, -ch, ch, ca, bt, bm, bf, bl, bs, bz, cg, -ci, -cb, -bu, -bn, -bg, -bk, -br, -by, -cf, cj, cc, bv, bo, bh, bj, bq, bx, ce, -ck, -cd, -bw, -bp, -bi },
{ ad, ae, af, ag, -ag, -af, -ae, -ad, -ad, -ae, -af, -ag, ag, af, ae, ad, ad, ae, af, ag, -ag, -af, -ae, -ad, -ad, -ae, -af, -ag, ag, af, ae, ad, ad, ae, af, ag, -ag, -af, -ae, -ad, -ad, -ae, -af, -ag, ag, af, ae, ad, ad, ae, af, ag, -ag, -af, -ae, -ad, -ad, -ae, -af, -ag, ag, af, ae, ad },
{ bj, bs, cb, ck, -cc, -bt, -bk, -bi, -br, -ca, -cj, cd, bu, bl, bh, bq, bz, ci, -ce, -bv, -bm, -bg, -bp, -by, -ch, cf, bw, bn, bf, bo, bx, cg, -cg, -bx, -bo, -bf, -bn, -bw, -cf, ch, by, bp, bg, bm, bv, ce, -ci, -bz, -bq, -bh, -bl, -bu, -cd, cj, ca, br, bi, bk, bt, cc, -ck, -cb, -bs, -bj },
{ ar, aw, bb, -bd, -ay, -at, -ap, -au, -az, -be, ba, av, aq, as, ax, bc, -bc, -ax, -as, -aq, -av, -ba, be, az, au, ap, at, ay, bd, -bb, -aw, -ar, -ar, -aw, -bb, bd, ay, at, ap, au, az, be, -ba, -av, -aq, -as, -ax, -bc, bc, ax, as, aq, av, ba, -be, -az, -au, -ap, -at, -ay, -bd, bb, aw, ar },
{ bk, bv, cg, -ce, -bt, -bi, -bm, -bx, -ci, cc, br, bg, bo, bz, ck, -ca, -bp, -bf, -bq, -cb, cj, by, bn, bh, bs, cd, -ch, -bw, -bl, -bj, -bu, -cf, cf, bu, bj, bl, bw, ch, -cd, -bs, -bh, -bn, -by, -cj, cb, bq, bf, bp, ca, -ck, -bz, -bo, -bg, -br, -cc, ci, bx, bm, bi, bt, ce, -cg, -bv, -bk },
{ ai, al, ao, -am, -aj, -ah, -ak, -an, an, ak, ah, aj, am, -ao, -al, -ai, -ai, -al, -ao, am, aj, ah, ak, an, -an, -ak, -ah, -aj, -am, ao, al, ai, ai, al, ao, -am, -aj, -ah, -ak, -an, an, ak, ah, aj, am, -ao, -al, -ai, -ai, -al, -ao, am, aj, ah, ak, an, -an, -ak, -ah, -aj, -am, ao, al, ai },
{ bl, by, -ck, -bx, -bk, -bm, -bz, cj, bw, bj, bn, ca, -ci, -bv, -bi, -bo, -cb, ch, bu, bh, bp, cc, -cg, -bt, -bg, -bq, -cd, cf, bs, bf, br, ce, -ce, -br, -bf, -bs, -cf, cd, bq, bg, bt, cg, -cc, -bp, -bh, -bu, -ch, cb, bo, bi, bv, ci, -ca, -bn, -bj, -bw, -cj, bz, bm, bk, bx, ck, -by, -bl },
{ as, az, -bd, -aw, -ap, -av, -bc, ba, at, ar, ay, -be, -ax, -aq, -au, -bb, bb, au, aq, ax, be, -ay, -ar, -at, -ba, bc, av, ap, aw, bd, -az, -as, -as, -az, bd, aw, ap, av, bc, -ba, -at, -ar, -ay, be, ax, aq, au, bb, -bb, -au, -aq, -ax, -be, ay, ar, at, ba, -bc, -av, -ap, -aw, -bd, az, as },
{ bm, cb, -cf, -bq, -bi, -bx, cj, bu, bf, bt, ci, -by, -bj, -bp, -ce, cc, bn, bl, ca, -cg, -br, -bh, -bw, ck, bv, bg, bs, ch, -bz, -bk, -bo, -cd, cd, bo, bk, bz, -ch, -bs, -bg, -bv, -ck, bw, bh, br, cg, -ca, -bl, -bn, -cc, ce, bp, bj, by, -ci, -bt, -bf, -bu, -cj, bx, bi, bq, cf, -cb, -bm },
{ ab, ac, -ac, -ab, -ab, -ac, ac, ab, ab, ac, -ac, -ab, -ab, -ac, ac, ab, ab, ac, -ac, -ab, -ab, -ac, ac, ab, ab, ac, -ac, -ab, -ab, -ac, ac, ab, ab, ac, -ac, -ab, -ab, -ac, ac, ab, ab, ac, -ac, -ab, -ab, -ac, ac, ab, ab, ac, -ac, -ab, -ab, -ac, ac, ab, ab, ac, -ac, -ab, -ab, -ac, ac, ab },
{ bn, ce, -ca, -bj, -br, -ci, bw, bf, bv, -cj, -bs, -bi, -bz, cf, bo, bm, cd, -cb, -bk, -bq, -ch, bx, bg, bu, -ck, -bt, -bh, -by, cg, bp, bl, cc, -cc, -bl, -bp, -cg, by, bh, bt, ck, -bu, -bg, -bx, ch, bq, bk, cb, -cd, -bm, -bo, -cf, bz, bi, bs, cj, -bv, -bf, -bw, ci, br, bj, ca, -ce, -bn },
{ at, bc, -ay, -ap, -ax, bd, au, as, bb, -az, -aq, -aw, be, av, ar, ba, -ba, -ar, -av, -be, aw, aq, az, -bb, -as, -au, -bd, ax, ap, ay, -bc, -at, -at, -bc, ay, ap, ax, -bd, -au, -as, -bb, az, aq, aw, -be, -av, -ar, -ba, ba, ar, av, be, -aw, -aq, -az, bb, as, au, bd, -ax, -ap, -ay, bc, at },
{ bo, ch, -bv, -bh, -ca, cc, bj, bt, -cj, -bq, -bm, -cf, bx, bf, by, -ce, -bl, -br, -ck, bs, bk, cd, -bz, -bg, -bw, cg, bn, bp, ci, -bu, -bi, -cb, cb, bi, bu, -ci, -bp, -bn, -cg, bw, bg, bz, -cd, -bk, -bs, ck, br, bl, ce, -by, -bf, -bx, cf, bm, bq, cj, -bt, -bj, -cc, ca, bh, bv, -ch, -bo },
{ aj, ao, -ak, -ai, -an, al, ah, am, -am, -ah, -al, an, ai, ak, -ao, -aj, -aj, -ao, ak, ai, an, -al, -ah, -am, am, ah, al, -an, -ai, -ak, ao, aj, aj, ao, -ak, -ai, -an, al, ah, am, -am, -ah, -al, an, ai, ak, -ao, -aj, -aj, -ao, ak, ai, an, -al, -ah, -am, am, ah, al, -an, -ai, -ak, ao, aj },
{ bp, ck, -bq, -bo, -cj, br, bn, ci, -bs, -bm, -ch, bt, bl, cg, -bu, -bk, -cf, bv, bj, ce, -bw, -bi, -cd, bx, bh, cc, -by, -bg, -cb, bz, bf, ca, -ca, -bf, -bz, cb, bg, by, -cc, -bh, -bx, cd, bi, bw, -ce, -bj, -bv, cf, bk, bu, -cg, -bl, -bt, ch, bm, bs, -ci, -bn, -br, cj, bo, bq, -ck, -bp },
{ au, -be, -at, -av, bd, as, aw, -bc, -ar, -ax, bb, aq, ay, -ba, -ap, -az, az, ap, ba, -ay, -aq, -bb, ax, ar, bc, -aw, -as, -bd, av, at, be, -au, -au, be, at, av, -bd, -as, -aw, bc, ar, ax, -bb, -aq, -ay, ba, ap, az, -az, -ap, -ba, ay, aq, bb, -ax, -ar, -bc, aw, as, bd, -av, -at, -be, au },
{ bq, -ci, -bl, -bv, cd, bg, ca, -by, -bi, -cf, bt, bn, ck, -bo, -bs, cg, bj, bx, -cb, -bf, -cc, bw, bk, ch, -br, -bp, cj, bm, bu, -ce, -bh, -bz, bz, bh, ce, -bu, -bm, -cj, bp, br, -ch, -bk, -bw, cc, bf, cb, -bx, -bj, -cg, bs, bo, -ck, -bn, -bt, cf, bi, by, -ca, -bg, -cd, bv, bl, ci, -bq },
{ ae, -ag, -ad, -af, af, ad, ag, -ae, -ae, ag, ad, af, -af, -ad, -ag, ae, ae, -ag, -ad, -af, af, ad, ag, -ae, -ae, ag, ad, af, -af, -ad, -ag, ae, ae, -ag, -ad, -af, af, ad, ag, -ae, -ae, ag, ad, af, -af, -ad, -ag, ae, ae, -ag, -ad, -af, af, ad, ag, -ae, -ae, ag, ad, af, -af, -ad, -ag, ae },
{ br, -cf, -bg, -cc, bu, bo, -ci, -bj, -bz, bx, bl, ck, -bm, -bw, ca, bi, ch, -bp, -bt, cd, bf, ce, -bs, -bq, cg, bh, cb, -bv, -bn, cj, bk, by, -by, -bk, -cj, bn, bv, -cb, -bh, -cg, bq, bs, -ce, -bf, -cd, bt, bp, -ch, -bi, -ca, bw, bm, -ck, -bl, -bx, bz, bj, ci, -bo, -bu, cc, bg, cf, -br },
{ av, -bb, -ap, -bc, au, aw, -ba, -aq, -bd, at, ax, -az, -ar, -be, as, ay, -ay, -as, be, ar, az, -ax, -at, bd, aq, ba, -aw, -au, bc, ap, bb, -av, -av, bb, ap, bc, -au, -aw, ba, aq, bd, -at, -ax, az, ar, be, -as, -ay, ay, as, -be, -ar, -az, ax, at, -bd, -aq, -ba, aw, au, -bc, -ap, -bb, av },
{ bs, -cc, -bi, -cj, bl, bz, -bv, -bp, cf, bf, cg, -bo, -bw, by, bm, -ci, -bh, -cd, br, bt, -cb, -bj, -ck, bk, ca, -bu, -bq, ce, bg, ch, -bn, -bx, bx, bn, -ch, -bg, -ce, bq, bu, -ca, -bk, ck, bj, cb, -bt, -br, cd, bh, ci, -bm, -by, bw, bo, -cg, -bf, -cf, bp, bv, -bz, -bl, cj, bi, cc, -bs },
{ ak, -am, -ai, ao, ah, an, -aj, -al, al, aj, -an, -ah, -ao, ai, am, -ak, -ak, am, ai, -ao, -ah, -an, aj, al, -al, -aj, an, ah, ao, -ai, -am, ak, ak, -am, -ai, ao, ah, an, -aj, -al, al, aj, -an, -ah, -ao, ai, am, -ak, -ak, am, ai, -ao, -ah, -an, aj, al, -al, -aj, an, ah, ao, -ai, -am, ak },
{ bt, -bz, -bn, cf, bh, ck, -bi, -ce, bo, by, -bu, -bs, ca, bm, -cg, -bg, -cj, bj, cd, -bp, -bx, bv, br, -cb, -bl, ch, bf, ci, -bk, -cc, bq, bw, -bw, -bq, cc, bk, -ci, -bf, -ch, bl, cb, -br, -bv, bx, bp, -cd, -bj, cj, bg, cg, -bm, -ca, bs, bu, -by, -bo, ce, bi, -ck, -bh, -cf, bn, bz, -bt },
{ aw, -ay, -au, ba, as, -bc, -aq, be, ap, bd, -ar, -bb, at, az, -av, -ax, ax, av, -az, -at, bb, ar, -bd, -ap, -be, aq, bc, -as, -ba, au, ay, -aw, -aw, ay, au, -ba, -as, bc, aq, -be, -ap, -bd, ar, bb, -at, -az, av, ax, -ax, -av, az, at, -bb, -ar, bd, ap, be, -aq, -bc, as, ba, -au, -ay, aw },
{ bu, -bw, -bs, by, bq, -ca, -bo, cc, bm, -ce, -bk, cg, bi, -ci, -bg, ck, bf, cj, -bh, -ch, bj, cf, -bl, -cd, bn, cb, -bp, -bz, br, bx, -bt, -bv, bv, bt, -bx, -br, bz, bp, -cb, -bn, cd, bl, -cf, -bj, ch, bh, -cj, -bf, -ck, bg, ci, -bi, -cg, bk, ce, -bm, -cc, bo, ca, -bq, -by, bs, bw, -bu },
{ aa, -aa, -aa, aa, aa, -aa, -aa, aa, aa, -aa, -aa, aa, aa, -aa, -aa, aa, aa, -aa, -aa, aa, aa, -aa, -aa, aa, aa, -aa, -aa, aa, aa, -aa, -aa, aa, aa, -aa, -aa, aa, aa, -aa, -aa, aa, aa, -aa, -aa, aa, aa, -aa, -aa, aa, aa, -aa, -aa, aa, aa, -aa, -aa, aa, aa, -aa, -aa, aa, aa, -aa, -aa, aa },
{ bv, -bt, -bx, br, bz, -bp, -cb, bn, cd, -bl, -cf, bj, ch, -bh, -cj, bf, -ck, -bg, ci, bi, -cg, -bk, ce, bm, -cc, -bo, ca, bq, -by, -bs, bw, bu, -bu, -bw, bs, by, -bq, -ca, bo, cc, -bm, -ce, bk, cg, -bi, -ci, bg, ck, -bf, cj, bh, -ch, -bj, cf, bl, -cd, -bn, cb, bp, -bz, -br, bx, bt, -bv },
{ ax, -av, -az, at, bb, -ar, -bd, ap, -be, -aq, bc, as, -ba, -au, ay, aw, -aw, -ay, au, ba, -as, -bc, aq, be, -ap, bd, ar, -bb, -at, az, av, -ax, -ax, av, az, -at, -bb, ar, bd, -ap, be, aq, -bc, -as, ba, au, -ay, -aw, aw, ay, -au, -ba, as, bc, -aq, -be, ap, -bd, -ar, bb, at, -az, -av, ax },
{ bw, -bq, -cc, bk, ci, -bf, ch, bl, -cb, -br, bv, bx, -bp, -cd, bj, cj, -bg, cg, bm, -ca, -bs, bu, by, -bo, -ce, bi, ck, -bh, cf, bn, -bz, -bt, bt, bz, -bn, -cf, bh, -ck, -bi, ce, bo, -by, -bu, bs, ca, -bm, -cg, bg, -cj, -bj, cd, bp, -bx, -bv, br, cb, -bl, -ch, bf, -ci, -bk, cc, bq, -bw },
{ al, -aj, -an, ah, -ao, -ai, am, ak, -ak, -am, ai, ao, -ah, an, aj, -al, -al, aj, an, -ah, ao, ai, -am, -ak, ak, am, -ai, -ao, ah, -an, -aj, al, al, -aj, -an, ah, -ao, -ai, am, ak, -ak, -am, ai, ao, -ah, an, aj, -al, -al, aj, an, -ah, ao, ai, -am, -ak, ak, am, -ai, -ao, ah, -an, -aj, al },
{ bx, -bn, -ch, bg, -ce, -bq, bu, ca, -bk, -ck, bj, -cb, -bt, br, cd, -bh, ci, bm, -by, -bw, bo, cg, -bf, cf, bp, -bv, -bz, bl, cj, -bi, cc, bs, -bs, -cc, bi, -cj, -bl, bz, bv, -bp, -cf, bf, -cg, -bo, bw, by, -bm, -ci, bh, -cd, -br, bt, cb, -bj, ck, bk, -ca, -bu, bq, ce, -bg, ch, bn, -bx },
{ ay, -as, -be, ar, -az, -ax, at, bd, -aq, ba, aw, -au, -bc, ap, -bb, -av, av, bb, -ap, bc, au, -aw, -ba, aq, -bd, -at, ax, az, -ar, be, as, -ay, -ay, as, be, -ar, az, ax, -at, -bd, aq, -ba, -aw, au, bc, -ap, bb, av, -av, -bb, ap, -bc, -au, aw, ba, -aq, bd, at, -ax, -az, ar, -be, -as, ay },
{ by, -bk, cj, bn, -bv, -cb, bh, -cg, -bq, bs, ce, -bf, cd, bt, -bp, -ch, bi, -ca, -bw, bm, ck, -bl, bx, bz, -bj, ci, bo, -bu, -cc, bg, -cf, -br, br, cf, -bg, cc, bu, -bo, -ci, bj, -bz, -bx, bl, -ck, -bm, bw, ca, -bi, ch, bp, -bt, -cd, bf, -ce, -bs, bq, cg, -bh, cb, bv, -bn, -cj, bk, -by },
{ af, -ad, ag, ae, -ae, -ag, ad, -af, -af, ad, -ag, -ae, ae, ag, -ad, af, af, -ad, ag, ae, -ae, -ag, ad, -af, -af, ad, -ag, -ae, ae, ag, -ad, af, af, -ad, ag, ae, -ae, -ag, ad, -af, -af, ad, -ag, -ae, ae, ag, -ad, af, af, -ad, ag, ae, -ae, -ag, ad, -af, -af, ad, -ag, -ae, ae, ag, -ad, af },
{ bz, -bh, ce, bu, -bm, cj, bp, -br, -ch, bk, -bw, -cc, bf, -cb, -bx, bj, -cg, -bs, bo, ck, -bn, bt, cf, -bi, by, ca, -bg, cd, bv, -bl, ci, bq, -bq, -ci, bl, -bv, -cd, bg, -ca, -by, bi, -cf, -bt, bn, -ck, -bo, bs, cg, -bj, bx, cb, -bf, cc, bw, -bk, ch, br, -bp, -cj, bm, -bu, -ce, bh, -bz },
{ az, -ap, ba, ay, -aq, bb, ax, -ar, bc, aw, -as, bd, av, -at, be, au, -au, -be, at, -av, -bd, as, -aw, -bc, ar, -ax, -bb, aq, -ay, -ba, ap, -az, -az, ap, -ba, -ay, aq, -bb, -ax, ar, -bc, -aw, as, -bd, -av, at, -be, -au, au, be, -at, av, bd, -as, aw, bc, -ar, ax, bb, -aq, ay, ba, -ap, az },
{ ca, -bf, bz, cb, -bg, by, cc, -bh, bx, cd, -bi, bw, ce, -bj, bv, cf, -bk, bu, cg, -bl, bt, ch, -bm, bs, ci, -bn, br, cj, -bo, bq, ck, -bp, bp, -ck, -bq, bo, -cj, -br, bn, -ci, -bs, bm, -ch, -bt, bl, -cg, -bu, bk, -cf, -bv, bj, -ce, -bw, bi, -cd, -bx, bh, -cc, -by, bg, -cb, -bz, bf, -ca },
{ am, -ah, al, an, -ai, ak, ao, -aj, aj, -ao, -ak, ai, -an, -al, ah, -am, -am, ah, -al, -an, ai, -ak, -ao, aj, -aj, ao, ak, -ai, an, al, -ah, am, am, -ah, al, an, -ai, ak, ao, -aj, aj, -ao, -ak, ai, -an, -al, ah, -am, -am, ah, -al, -an, ai, -ak, -ao, aj, -aj, ao, ak, -ai, an, al, -ah, am },
{ cb, -bi, bu, ci, -bp, bn, -cg, -bw, bg, -bz, -cd, bk, -bs, -ck, br, -bl, ce, by, -bf, bx, cf, -bm, bq, -cj, -bt, bj, -cc, -ca, bh, -bv, -ch, bo, -bo, ch, bv, -bh, ca, cc, -bj, bt, cj, -bq, bm, -cf, -bx, bf, -by, -ce, bl, -br, ck, bs, -bk, cd, bz, -bg, bw, cg, -bn, bp, -ci, -bu, bi, -cb },
{ ba, -ar, av, -be, -aw, aq, -az, -bb, as, -au, bd, ax, -ap, ay, bc, -at, at, -bc, -ay, ap, -ax, -bd, au, -as, bb, az, -aq, aw, be, -av, ar, -ba, -ba, ar, -av, be, aw, -aq, az, bb, -as, au, -bd, -ax, ap, -ay, -bc, at, -at, bc, ay, -ap, ax, bd, -au, as, -bb, -az, aq, -aw, -be, av, -ar, ba },
{ cc, -bl, bp, -cg, -by, bh, -bt, ck, bu, -bg, bx, ch, -bq, bk, -cb, -cd, bm, -bo, cf, bz, -bi, bs, -cj, -bv, bf, -bw, -ci, br, -bj, ca, ce, -bn, bn, -ce, -ca, bj, -br, ci, bw, -bf, bv, cj, -bs, bi, -bz, -cf, bo, -bm, cd, cb, -bk, bq, -ch, -bx, bg, -bu, -ck, bt, -bh, by, cg, -bp, bl, -cc },
{ ac, -ab, ab, -ac, -ac, ab, -ab, ac, ac, -ab, ab, -ac, -ac, ab, -ab, ac, ac, -ab, ab, -ac, -ac, ab, -ab, ac, ac, -ab, ab, -ac, -ac, ab, -ab, ac, ac, -ab, ab, -ac, -ac, ab, -ab, ac, ac, -ab, ab, -ac, -ac, ab, -ab, ac, ac, -ab, ab, -ac, -ac, ab, -ab, ac, ac, -ab, ab, -ac, -ac, ab, -ab, ac },
{ cd, -bo, bk, -bz, -ch, bs, -bg, bv, -ck, -bw, bh, -br, cg, ca, -bl, bn, -cc, -ce, bp, -bj, by, ci, -bt, bf, -bu, cj, bx, -bi, bq, -cf, -cb, bm, -bm, cb, cf, -bq, bi, -bx, -cj, bu, -bf, bt, -ci, -by, bj, -bp, ce, cc, -bn, bl, -ca, -cg, br, -bh, bw, ck, -bv, bg, -bs, ch, bz, -bk, bo, -cd },
{ bb, -au, aq, -ax, be, ay, -ar, at, -ba, -bc, av, -ap, aw, -bd, -az, as, -as, az, bd, -aw, ap, -av, bc, ba, -at, ar, -ay, -be, ax, -aq, au, -bb, -bb, au, -aq, ax, -be, -ay, ar, -at, ba, bc, -av, ap, -aw, bd, az, -as, as, -az, -bd, aw, -ap, av, -bc, -ba, at, -ar, ay, be, -ax, aq, -au, bb },
{ ce, -br, bf, -bs, cf, cd, -bq, bg, -bt, cg, cc, -bp, bh, -bu, ch, cb, -bo, bi, -bv, ci, ca, -bn, bj, -bw, cj, bz, -bm, bk, -bx, ck, by, -bl, bl, -by, -ck, bx, -bk, bm, -bz, -cj, bw, -bj, bn, -ca, -ci, bv, -bi, bo, -cb, -ch, bu, -bh, bp, -cc, -cg, bt, -bg, bq, -cd, -cf, bs, -bf, br, -ce },
{ an, -ak, ah, -aj, am, ao, -al, ai, -ai, al, -ao, -am, aj, -ah, ak, -an, -an, ak, -ah, aj, -am, -ao, al, -ai, ai, -al, ao, am, -aj, ah, -ak, an, an, -ak, ah, -aj, am, ao, -al, ai, -ai, al, -ao, -am, aj, -ah, ak, -an, -an, ak, -ah, aj, -am, -ao, al, -ai, ai, -al, ao, am, -aj, ah, -ak, an },
{ cf, -bu, bj, -bl, bw, -ch, -cd, bs, -bh, bn, -by, cj, cb, -bq, bf, -bp, ca, ck, -bz, bo, -bg, br, -cc, -ci, bx, -bm, bi, -bt, ce, cg, -bv, bk, -bk, bv, -cg, -ce, bt, -bi, bm, -bx, ci, cc, -br, bg, -bo, bz, -ck, -ca, bp, -bf, bq, -cb, -cj, by, -bn, bh, -bs, cd, ch, -bw, bl, -bj, bu, -cf },
{ bc, -ax, as, -aq, av, -ba, -be, az, -au, ap, -at, ay, -bd, -bb, aw, -ar, ar, -aw, bb, bd, -ay, at, -ap, au, -az, be, ba, -av, aq, -as, ax, -bc, -bc, ax, -as, aq, -av, ba, be, -az, au, -ap, at, -ay, bd, bb, -aw, ar, -ar, aw, -bb, -bd, ay, -at, ap, -au, az, -be, -ba, av, -aq, as, -ax, bc },
{ cg, -bx, bo, -bf, bn, -bw, cf, ch, -by, bp, -bg, bm, -bv, ce, ci, -bz, bq, -bh, bl, -bu, cd, cj, -ca, br, -bi, bk, -bt, cc, ck, -cb, bs, -bj, bj, -bs, cb, -ck, -cc, bt, -bk, bi, -br, ca, -cj, -cd, bu, -bl, bh, -bq, bz, -ci, -ce, bv, -bm, bg, -bp, by, -ch, -cf, bw, -bn, bf, -bo, bx, -cg },
{ ag, -af, ae, -ad, ad, -ae, af, -ag, -ag, af, -ae, ad, -ad, ae, -af, ag, ag, -af, ae, -ad, ad, -ae, af, -ag, -ag, af, -ae, ad, -ad, ae, -af, ag, ag, -af, ae, -ad, ad, -ae, af, -ag, -ag, af, -ae, ad, -ad, ae, -af, ag, ag, -af, ae, -ad, ad, -ae, af, -ag, -ag, af, -ae, ad, -ad, ae, -af, ag },
{ ch, -ca, bt, -bm, bf, -bl, bs, -bz, cg, ci, -cb, bu, -bn, bg, -bk, br, -by, cf, cj, -cc, bv, -bo, bh, -bj, bq, -bx, ce, ck, -cd, bw, -bp, bi, -bi, bp, -bw, cd, -ck, -ce, bx, -bq, bj, -bh, bo, -bv, cc, -cj, -cf, by, -br, bk, -bg, bn, -bu, cb, -ci, -cg, bz, -bs, bl, -bf, bm, -bt, ca, -ch },
{ bd, -ba, ax, -au, ar, -ap, as, -av, ay, -bb, be, bc, -az, aw, -at, aq, -aq, at, -aw, az, -bc, -be, bb, -ay, av, -as, ap, -ar, au, -ax, ba, -bd, -bd, ba, -ax, au, -ar, ap, -as, av, -ay, bb, -be, -bc, az, -aw, at, -aq, aq, -at, aw, -az, bc, be, -bb, ay, -av, as, -ap, ar, -au, ax, -ba, bd },
{ ci, -cd, by, -bt, bo, -bj, bf, -bk, bp, -bu, bz, -ce, cj, ch, -cc, bx, -bs, bn, -bi, bg, -bl, bq, -bv, ca, -cf, ck, cg, -cb, bw, -br, bm, -bh, bh, -bm, br, -bw, cb, -cg, -ck, cf, -ca, bv, -bq, bl, -bg, bi, -bn, bs, -bx, cc, -ch, -cj, ce, -bz, bu, -bp, bk, -bf, bj, -bo, bt, -by, cd, -ci },
{ ao, -an, am, -al, ak, -aj, ai, -ah, ah, -ai, aj, -ak, al, -am, an, -ao, -ao, an, -am, al, -ak, aj, -ai, ah, -ah, ai, -aj, ak, -al, am, -an, ao, ao, -an, am, -al, ak, -aj, ai, -ah, ah, -ai, aj, -ak, al, -am, an, -ao, -ao, an, -am, al, -ak, aj, -ai, ah, -ah, ai, -aj, ak, -al, am, -an, ao },
{ cj, -cg, cd, -ca, bx, -bu, br, -bo, bl, -bi, bf, -bh, bk, -bn, bq, -bt, bw, -bz, cc, -cf, ci, ck, -ch, ce, -cb, by, -bv, bs, -bp, bm, -bj, bg, -bg, bj, -bm, bp, -bs, bv, -by, cb, -ce, ch, -ck, -ci, cf, -cc, bz, -bw, bt, -bq, bn, -bk, bh, -bf, bi, -bl, bo, -br, bu, -bx, ca, -cd, cg, -cj },
{ be, -bd, bc, -bb, ba, -az, ay, -ax, aw, -av, au, -at, as, -ar, aq, -ap, ap, -aq, ar, -as, at, -au, av, -aw, ax, -ay, az, -ba, bb, -bc, bd, -be, -be, bd, -bc, bb, -ba, az, -ay, ax, -aw, av, -au, at, -as, ar, -aq, ap, -ap, aq, -ar, as, -at, au, -av, aw, -ax, ay, -az, ba, -bb, bc, -bd, be },
{ ck, -cj, ci, -ch, cg, -cf, ce, -cd, cc, -cb, ca, -bz, by, -bx, bw, -bv, bu, -bt, bs, -br, bq, -bp, bo, -bn, bm, -bl, bk, -bj, bi, -bh, bg, -bf, bf, -bg, bh, -bi, bj, -bk, bl, -bm, bn, -bo, bp, -bq, br, -bs, bt, -bu, bv, -bw, bx, -by, bz, -ca, cb, -cc, cd, -ce, cf, -cg, ch, -ci, cj, -ck },
}
*/
void ff_vvc_inv_dct2_64(int *coeffs, const ptrdiff_t stride, const size_t nz)
{
const int aa = 64, ab = 83, ac = 36, ad = 89, ae = 75, af = 50, ag = 18, ah = 90;
const int ai = 87, aj = 80, ak = 70, al = 57, am = 43, an = 25, ao = 9, ap = 90;
const int aq = 90, ar = 88, as = 85, at = 82, au = 78, av = 73, aw = 67, ax = 61;
const int ay = 54, az = 46, ba = 38, bb = 31, bc = 22, bd = 13, be = 4, bf = 91;
const int bg = 90, bh = 90, bi = 90, bj = 88, bk = 87, bl = 86, bm = 84, bn = 83;
const int bo = 81, bp = 79, bq = 77, br = 73, bs = 71, bt = 69, bu = 65, bv = 62;
const int bw = 59, bx = 56, by = 52, bz = 48, ca = 44, cb = 41, cc = 37, cd = 33;
const int ce = 28, cf = 24, cg = 20, ch = 15, ci = 11, cj = 7, ck = 2;
const int x0 = coeffs[0 * stride], x1 = coeffs[1 * stride];
const int x2 = coeffs[2 * stride], x3 = coeffs[3 * stride];
const int x4 = coeffs[4 * stride], x5 = coeffs[5 * stride];
const int x6 = coeffs[6 * stride], x7 = coeffs[7 * stride];
const int x8 = coeffs[8 * stride], x9 = coeffs[9 * stride];
const int x10 = coeffs[10 * stride], x11 = coeffs[11 * stride];
const int x12 = coeffs[12 * stride], x13 = coeffs[13 * stride];
const int x14 = coeffs[14 * stride], x15 = coeffs[15 * stride];
const int x16 = coeffs[16 * stride], x17 = coeffs[17 * stride];
const int x18 = coeffs[18 * stride], x19 = coeffs[19 * stride];
const int x20 = coeffs[20 * stride], x21 = coeffs[21 * stride];
const int x22 = coeffs[22 * stride], x23 = coeffs[23 * stride];
const int x24 = coeffs[24 * stride], x25 = coeffs[25 * stride];
const int x26 = coeffs[26 * stride], x27 = coeffs[27 * stride];
const int x28 = coeffs[28 * stride], x29 = coeffs[29 * stride];
const int x30 = coeffs[30 * stride], x31 = coeffs[31 * stride];
//according to vvc specification, x31 to x63 are zeros
const int EEEEE[2] = {
aa * x0,
aa * x0,
};
const int EEEEO[2] = {
G16(ab * x16),
G16(ac * x16),
};
const int EEEE[4] = {
EEEEE[0] + EEEEO[0], EEEEE[1] + EEEEO[1],
EEEEE[1] - EEEEO[1], EEEEE[0] - EEEEO[0],
};
const int EEEO[4] = {
G8(ad * x8) + G16(+ae * x24),
G8(ae * x8) + G16(-ag * x24),
G8(af * x8) + G16(-ad * x24),
G8(ag * x8) + G16(-af * x24),
};
const int EEE[8] = {
EEEE[0] + EEEO[0], EEEE[1] + EEEO[1], EEEE[2] + EEEO[2], EEEE[3] + EEEO[3],
EEEE[3] - EEEO[3], EEEE[2] - EEEO[2], EEEE[1] - EEEO[1], EEEE[0] - EEEO[0],
};
const int EEO[8] = {
G4(ah * x4) + G8(+ai * x12) + G16(+aj * x20 + ak * x28),
G4(ai * x4) + G8(+al * x12) + G16(+ao * x20 - am * x28),
G4(aj * x4) + G8(+ao * x12) + G16(-ak * x20 - ai * x28),
G4(ak * x4) + G8(-am * x12) + G16(-ai * x20 + ao * x28),
G4(al * x4) + G8(-aj * x12) + G16(-an * x20 + ah * x28),
G4(am * x4) + G8(-ah * x12) + G16(+al * x20 + an * x28),
G4(an * x4) + G8(-ak * x12) + G16(+ah * x20 - aj * x28),
G4(ao * x4) + G8(-an * x12) + G16(+am * x20 - al * x28),
};
const int EE[16] = {
EEE[0] + EEO[0], EEE[1] + EEO[1], EEE[2] + EEO[2], EEE[3] + EEO[3], EEE[4] + EEO[4], EEE[5] + EEO[5], EEE[6] + EEO[6], EEE[7] + EEO[7],
EEE[7] - EEO[7], EEE[6] - EEO[6], EEE[5] - EEO[5], EEE[4] - EEO[4], EEE[3] - EEO[3], EEE[2] - EEO[2], EEE[1] - EEO[1], EEE[0] - EEO[0],
};
const int EO[16] = {
G2(ap * x2) + G4(+aq * x6) + G8(+ar * x10 + as * x14) + G16(+at * x18 + au * x22 + av * x26 + aw * x30),
G2(aq * x2) + G4(+at * x6) + G8(+aw * x10 + az * x14) + G16(+bc * x18 - be * x22 - bb * x26 - ay * x30),
G2(ar * x2) + G4(+aw * x6) + G8(+bb * x10 - bd * x14) + G16(-ay * x18 - at * x22 - ap * x26 - au * x30),
G2(as * x2) + G4(+az * x6) + G8(-bd * x10 - aw * x14) + G16(-ap * x18 - av * x22 - bc * x26 + ba * x30),
G2(at * x2) + G4(+bc * x6) + G8(-ay * x10 - ap * x14) + G16(-ax * x18 + bd * x22 + au * x26 + as * x30),
G2(au * x2) + G4(-be * x6) + G8(-at * x10 - av * x14) + G16(+bd * x18 + as * x22 + aw * x26 - bc * x30),
G2(av * x2) + G4(-bb * x6) + G8(-ap * x10 - bc * x14) + G16(+au * x18 + aw * x22 - ba * x26 - aq * x30),
G2(aw * x2) + G4(-ay * x6) + G8(-au * x10 + ba * x14) + G16(+as * x18 - bc * x22 - aq * x26 + be * x30),
G2(ax * x2) + G4(-av * x6) + G8(-az * x10 + at * x14) + G16(+bb * x18 - ar * x22 - bd * x26 + ap * x30),
G2(ay * x2) + G4(-as * x6) + G8(-be * x10 + ar * x14) + G16(-az * x18 - ax * x22 + at * x26 + bd * x30),
G2(az * x2) + G4(-ap * x6) + G8(+ba * x10 + ay * x14) + G16(-aq * x18 + bb * x22 + ax * x26 - ar * x30),
G2(ba * x2) + G4(-ar * x6) + G8(+av * x10 - be * x14) + G16(-aw * x18 + aq * x22 - az * x26 - bb * x30),
G2(bb * x2) + G4(-au * x6) + G8(+aq * x10 - ax * x14) + G16(+be * x18 + ay * x22 - ar * x26 + at * x30),
G2(bc * x2) + G4(-ax * x6) + G8(+as * x10 - aq * x14) + G16(+av * x18 - ba * x22 - be * x26 + az * x30),
G2(bd * x2) + G4(-ba * x6) + G8(+ax * x10 - au * x14) + G16(+ar * x18 - ap * x22 + as * x26 - av * x30),
G2(be * x2) + G4(-bd * x6) + G8(+bc * x10 - bb * x14) + G16(+ba * x18 - az * x22 + ay * x26 - ax * x30),
};
const int E[32] = {
EE[0] + EO[0], EE[1] + EO[1], EE[2] + EO[2], EE[3] + EO[3], EE[4] + EO[4], EE[5] + EO[5], EE[6] + EO[6], EE[7] + EO[7], EE[8] + EO[8], EE[9] + EO[9], EE[10] + EO[10], EE[11] + EO[11], EE[12] + EO[12], EE[13] + EO[13], EE[14] + EO[14], EE[15] + EO[15],
EE[15] - EO[15], EE[14] - EO[14], EE[13] - EO[13], EE[12] - EO[12], EE[11] - EO[11], EE[10] - EO[10], EE[9] - EO[9], EE[8] - EO[8], EE[7] - EO[7], EE[6] - EO[6], EE[5] - EO[5], EE[4] - EO[4], EE[3] - EO[3], EE[2] - EO[2], EE[1] - EO[1], EE[0] - EO[0],
};
const int O[32] = {
bf * x1 + G2(+bg * x3) + G4(+bh * x5 + bi * x7) + G8(+bj * x9 + bk * x11 + bl * x13 + bm * x15) + G16(+bn * x17 + bo * x19 + bp * x21 + bq * x23 + br * x25 + bs * x27 + bt * x29 + bu * x31),
bg * x1 + G2(+bj * x3) + G4(+bm * x5 + bp * x7) + G8(+bs * x9 + bv * x11 + by * x13 + cb * x15) + G16(+ce * x17 + ch * x19 + ck * x21 - ci * x23 + -cf * x25 - cc * x27 - bz * x29 - bw * x31),
bh * x1 + G2(+bm * x3) + G4(+br * x5 + bw * x7) + G8(+cb * x9 + cg * x11 - ck * x13 - cf * x15) + G16(-ca * x17 - bv * x19 - bq * x21 - bl * x23 + -bg * x25 - bi * x27 - bn * x29 - bs * x31),
bi * x1 + G2(+bp * x3) + G4(+bw * x5 + cd * x7) + G8(+ck * x9 - ce * x11 - bx * x13 - bq * x15) + G16(-bj * x17 - bh * x19 - bo * x21 - bv * x23 + -cc * x25 - cj * x27 + cf * x29 + by * x31),
bj * x1 + G2(+bs * x3) + G4(+cb * x5 + ck * x7) + G8(-cc * x9 - bt * x11 - bk * x13 - bi * x15) + G16(-br * x17 - ca * x19 - cj * x21 + cd * x23 + bu * x25 + bl * x27 + bh * x29 + bq * x31),
bk * x1 + G2(+bv * x3) + G4(+cg * x5 - ce * x7) + G8(-bt * x9 - bi * x11 - bm * x13 - bx * x15) + G16(-ci * x17 + cc * x19 + br * x21 + bg * x23 + bo * x25 + bz * x27 + ck * x29 - ca * x31),
bl * x1 + G2(+by * x3) + G4(-ck * x5 - bx * x7) + G8(-bk * x9 - bm * x11 - bz * x13 + cj * x15) + G16(+bw * x17 + bj * x19 + bn * x21 + ca * x23 + -ci * x25 - bv * x27 - bi * x29 - bo * x31),
bm * x1 + G2(+cb * x3) + G4(-cf * x5 - bq * x7) + G8(-bi * x9 - bx * x11 + cj * x13 + bu * x15) + G16(+bf * x17 + bt * x19 + ci * x21 - by * x23 + -bj * x25 - bp * x27 - ce * x29 + cc * x31),
bn * x1 + G2(+ce * x3) + G4(-ca * x5 - bj * x7) + G8(-br * x9 - ci * x11 + bw * x13 + bf * x15) + G16(+bv * x17 - cj * x19 - bs * x21 - bi * x23 + -bz * x25 + cf * x27 + bo * x29 + bm * x31),
bo * x1 + G2(+ch * x3) + G4(-bv * x5 - bh * x7) + G8(-ca * x9 + cc * x11 + bj * x13 + bt * x15) + G16(-cj * x17 - bq * x19 - bm * x21 - cf * x23 + bx * x25 + bf * x27 + by * x29 - ce * x31),
bp * x1 + G2(+ck * x3) + G4(-bq * x5 - bo * x7) + G8(-cj * x9 + br * x11 + bn * x13 + ci * x15) + G16(-bs * x17 - bm * x19 - ch * x21 + bt * x23 + bl * x25 + cg * x27 - bu * x29 - bk * x31),
bq * x1 + G2(-ci * x3) + G4(-bl * x5 - bv * x7) + G8(+cd * x9 + bg * x11 + ca * x13 - by * x15) + G16(-bi * x17 - cf * x19 + bt * x21 + bn * x23 + ck * x25 - bo * x27 - bs * x29 + cg * x31),
br * x1 + G2(-cf * x3) + G4(-bg * x5 - cc * x7) + G8(+bu * x9 + bo * x11 - ci * x13 - bj * x15) + G16(-bz * x17 + bx * x19 + bl * x21 + ck * x23 + -bm * x25 - bw * x27 + ca * x29 + bi * x31),
bs * x1 + G2(-cc * x3) + G4(-bi * x5 - cj * x7) + G8(+bl * x9 + bz * x11 - bv * x13 - bp * x15) + G16(+cf * x17 + bf * x19 + cg * x21 - bo * x23 + -bw * x25 + by * x27 + bm * x29 - ci * x31),
bt * x1 + G2(-bz * x3) + G4(-bn * x5 + cf * x7) + G8(+bh * x9 + ck * x11 - bi * x13 - ce * x15) + G16(+bo * x17 + by * x19 - bu * x21 - bs * x23 + ca * x25 + bm * x27 - cg * x29 - bg * x31),
bu * x1 + G2(-bw * x3) + G4(-bs * x5 + by * x7) + G8(+bq * x9 - ca * x11 - bo * x13 + cc * x15) + G16(+bm * x17 - ce * x19 - bk * x21 + cg * x23 + bi * x25 - ci * x27 - bg * x29 + ck * x31),
bv * x1 + G2(-bt * x3) + G4(-bx * x5 + br * x7) + G8(+bz * x9 - bp * x11 - cb * x13 + bn * x15) + G16(+cd * x17 - bl * x19 - cf * x21 + bj * x23 + ch * x25 - bh * x27 - cj * x29 + bf * x31),
bw * x1 + G2(-bq * x3) + G4(-cc * x5 + bk * x7) + G8(+ci * x9 - bf * x11 + ch * x13 + bl * x15) + G16(-cb * x17 - br * x19 + bv * x21 + bx * x23 + -bp * x25 - cd * x27 + bj * x29 + cj * x31),
bx * x1 + G2(-bn * x3) + G4(-ch * x5 + bg * x7) + G8(-ce * x9 - bq * x11 + bu * x13 + ca * x15) + G16(-bk * x17 - ck * x19 + bj * x21 - cb * x23 + -bt * x25 + br * x27 + cd * x29 - bh * x31),
by * x1 + G2(-bk * x3) + G4(+cj * x5 + bn * x7) + G8(-bv * x9 - cb * x11 + bh * x13 - cg * x15) + G16(-bq * x17 + bs * x19 + ce * x21 - bf * x23 + cd * x25 + bt * x27 - bp * x29 - ch * x31),
bz * x1 + G2(-bh * x3) + G4(+ce * x5 + bu * x7) + G8(-bm * x9 + cj * x11 + bp * x13 - br * x15) + G16(-ch * x17 + bk * x19 - bw * x21 - cc * x23 + bf * x25 - cb * x27 - bx * x29 + bj * x31),
ca * x1 + G2(-bf * x3) + G4(+bz * x5 + cb * x7) + G8(-bg * x9 + by * x11 + cc * x13 - bh * x15) + G16(+bx * x17 + cd * x19 - bi * x21 + bw * x23 + ce * x25 - bj * x27 + bv * x29 + cf * x31),
cb * x1 + G2(-bi * x3) + G4(+bu * x5 + ci * x7) + G8(-bp * x9 + bn * x11 - cg * x13 - bw * x15) + G16(+bg * x17 - bz * x19 - cd * x21 + bk * x23 + -bs * x25 - ck * x27 + br * x29 - bl * x31),
cc * x1 + G2(-bl * x3) + G4(+bp * x5 - cg * x7) + G8(-by * x9 + bh * x11 - bt * x13 + ck * x15) + G16(+bu * x17 - bg * x19 + bx * x21 + ch * x23 + -bq * x25 + bk * x27 - cb * x29 - cd * x31),
cd * x1 + G2(-bo * x3) + G4(+bk * x5 - bz * x7) + G8(-ch * x9 + bs * x11 - bg * x13 + bv * x15) + G16(-ck * x17 - bw * x19 + bh * x21 - br * x23 + cg * x25 + ca * x27 - bl * x29 + bn * x31),
ce * x1 + G2(-br * x3) + G4(+bf * x5 - bs * x7) + G8(+cf * x9 + cd * x11 - bq * x13 + bg * x15) + G16(-bt * x17 + cg * x19 + cc * x21 - bp * x23 + bh * x25 - bu * x27 + ch * x29 + cb * x31),
cf * x1 + G2(-bu * x3) + G4(+bj * x5 - bl * x7) + G8(+bw * x9 - ch * x11 - cd * x13 + bs * x15) + G16(-bh * x17 + bn * x19 - by * x21 + cj * x23 + cb * x25 - bq * x27 + bf * x29 - bp * x31),
cg * x1 + G2(-bx * x3) + G4(+bo * x5 - bf * x7) + G8(+bn * x9 - bw * x11 + cf * x13 + ch * x15) + G16(-by * x17 + bp * x19 - bg * x21 + bm * x23 + -bv * x25 + ce * x27 + ci * x29 - bz * x31),
ch * x1 + G2(-ca * x3) + G4(+bt * x5 - bm * x7) + G8(+bf * x9 - bl * x11 + bs * x13 - bz * x15) + G16(+cg * x17 + ci * x19 - cb * x21 + bu * x23 + -bn * x25 + bg * x27 - bk * x29 + br * x31),
ci * x1 + G2(-cd * x3) + G4(+by * x5 - bt * x7) + G8(+bo * x9 - bj * x11 + bf * x13 - bk * x15) + G16(+bp * x17 - bu * x19 + bz * x21 - ce * x23 + cj * x25 + ch * x27 - cc * x29 + bx * x31),
cj * x1 + G2(-cg * x3) + G4(+cd * x5 - ca * x7) + G8(+bx * x9 - bu * x11 + br * x13 - bo * x15) + G16(+bl * x17 - bi * x19 + bf * x21 - bh * x23 + bk * x25 - bn * x27 + bq * x29 - bt * x31),
ck * x1 + G2(-cj * x3) + G4(+ci * x5 - ch * x7) + G8(+cg * x9 - cf * x11 + ce * x13 - cd * x15) + G16(+cc * x17 - cb * x19 + ca * x21 - bz * x23 + by * x25 - bx * x27 + bw * x29 - bv * x31),
};
coeffs[0 * stride] = E[0 ] + O[0 ];
coeffs[1 * stride] = E[1 ] + O[1 ];
coeffs[2 * stride] = E[2 ] + O[2 ];
coeffs[3 * stride] = E[3 ] + O[3 ];
coeffs[4 * stride] = E[4 ] + O[4 ];
coeffs[5 * stride] = E[5 ] + O[5 ];
coeffs[6 * stride] = E[6 ] + O[6 ];
coeffs[7 * stride] = E[7 ] + O[7 ];
coeffs[8 * stride] = E[8 ] + O[8 ];
coeffs[9 * stride] = E[9 ] + O[9 ];
coeffs[10 * stride] = E[10] + O[10];
coeffs[11 * stride] = E[11] + O[11];
coeffs[12 * stride] = E[12] + O[12];
coeffs[13 * stride] = E[13] + O[13];
coeffs[14 * stride] = E[14] + O[14];
coeffs[15 * stride] = E[15] + O[15];
coeffs[16 * stride] = E[16] + O[16];
coeffs[17 * stride] = E[17] + O[17];
coeffs[18 * stride] = E[18] + O[18];
coeffs[19 * stride] = E[19] + O[19];
coeffs[20 * stride] = E[20] + O[20];
coeffs[21 * stride] = E[21] + O[21];
coeffs[22 * stride] = E[22] + O[22];
coeffs[23 * stride] = E[23] + O[23];
coeffs[24 * stride] = E[24] + O[24];
coeffs[25 * stride] = E[25] + O[25];
coeffs[26 * stride] = E[26] + O[26];
coeffs[27 * stride] = E[27] + O[27];
coeffs[28 * stride] = E[28] + O[28];
coeffs[29 * stride] = E[29] + O[29];
coeffs[30 * stride] = E[30] + O[30];
coeffs[31 * stride] = E[31] + O[31];
coeffs[32 * stride] = E[31] - O[31];
coeffs[33 * stride] = E[30] - O[30];
coeffs[34 * stride] = E[29] - O[29];
coeffs[35 * stride] = E[28] - O[28];
coeffs[36 * stride] = E[27] - O[27];
coeffs[37 * stride] = E[26] - O[26];
coeffs[38 * stride] = E[25] - O[25];
coeffs[39 * stride] = E[24] - O[24];
coeffs[40 * stride] = E[23] - O[23];
coeffs[41 * stride] = E[22] - O[22];
coeffs[42 * stride] = E[21] - O[21];
coeffs[43 * stride] = E[20] - O[20];
coeffs[44 * stride] = E[19] - O[19];
coeffs[45 * stride] = E[18] - O[18];
coeffs[46 * stride] = E[17] - O[17];
coeffs[47 * stride] = E[16] - O[16];
coeffs[48 * stride] = E[15] - O[15];
coeffs[49 * stride] = E[14] - O[14];
coeffs[50 * stride] = E[13] - O[13];
coeffs[51 * stride] = E[12] - O[12];
coeffs[52 * stride] = E[11] - O[11];
coeffs[53 * stride] = E[10] - O[10];
coeffs[54 * stride] = E[9] - O[9];
coeffs[55 * stride] = E[8] - O[8];
coeffs[56 * stride] = E[7] - O[7];
coeffs[57 * stride] = E[6] - O[6];
coeffs[58 * stride] = E[5] - O[5];
coeffs[59 * stride] = E[4] - O[4];
coeffs[60 * stride] = E[3] - O[3];
coeffs[61 * stride] = E[2] - O[2];
coeffs[62 * stride] = E[1] - O[1];
coeffs[63 * stride] = E[0] - O[0];
};
static void matrix_mul(int *coeffs, const ptrdiff_t stride, const int8_t* matrix, const int size, const size_t nz)
{
//for dst7 and dct8, coeffs > 16 are zero out
int tmp[16];
for (int i = 0; i < nz; i++)
tmp[i] = coeffs[i * stride];
for (int i = 0; i < size; i++) {
int o = 0;
for (int j = 0; j < nz; j++)
o += tmp[j] * matrix[j * size];
*coeffs = o;
coeffs += stride;
matrix++;
}
}
static void inv_dct8(int *coeffs, const ptrdiff_t stride, const int8_t *matrix, const int size, const size_t nz)
{
matrix_mul(coeffs, stride, matrix, size, nz);
}
#define DEFINE_INV_DCT8_1D(S) \
void ff_vvc_inv_dct8_ ## S(int *coeffs, const ptrdiff_t stride, const size_t nz) \
{ \
inv_dct8(coeffs, stride, &ff_vvc_dct8_##S##x##S[0][0], S, nz); \
}
DEFINE_INV_DCT8_1D( 4)
DEFINE_INV_DCT8_1D( 8)
DEFINE_INV_DCT8_1D(16)
DEFINE_INV_DCT8_1D(32)
static void inv_dst7(int *coeffs, const ptrdiff_t stride, const int8_t *matrix, const int size, const size_t nz)
{
matrix_mul(coeffs, stride, matrix, size, nz);
}
#define DEFINE_INV_DST7_1D(S) \
void ff_vvc_inv_dst7_ ## S(int *coeffs, const ptrdiff_t stride, const size_t nz) \
{ \
inv_dst7(coeffs, stride, &ff_vvc_dst7_##S##x##S[0][0], S, nz); \
}
DEFINE_INV_DST7_1D( 4)
DEFINE_INV_DST7_1D( 8)
DEFINE_INV_DST7_1D(16)
DEFINE_INV_DST7_1D(32)
void ff_vvc_inv_lfnst_1d(int *v, const int *u, int no_zero_size, int n_tr_s,
int pred_mode_intra, int lfnst_idx, int log2_transform_range)
{
int lfnst_tr_set_idx = pred_mode_intra < 0 ? 1 : ff_vvc_lfnst_tr_set_index[pred_mode_intra];
const int8_t *tr_mat = n_tr_s > 16 ? ff_vvc_lfnst_8x8[lfnst_tr_set_idx][lfnst_idx-1][0] : ff_vvc_lfnst_4x4[lfnst_tr_set_idx][lfnst_idx - 1][0];
for (int j = 0; j < n_tr_s; j++, tr_mat++) {
int t = 0;
for (int i = 0; i < no_zero_size; i++)
t += u[i] * tr_mat[i * n_tr_s];
v[j] = av_clip_intp2((t + 64) >> 7 , log2_transform_range);
}
}
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