| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * H.274 film grain synthesis | ||
| 3 | * Copyright (c) 2021 Niklas Haas <ffmpeg@haasn.xyz> | ||
| 4 | * | ||
| 5 | * This file is part of FFmpeg. | ||
| 6 | * | ||
| 7 | * FFmpeg is free software; you can redistribute it and/or | ||
| 8 | * modify it under the terms of the GNU Lesser General Public | ||
| 9 | * License as published by the Free Software Foundation; either | ||
| 10 | * version 2.1 of the License, or (at your option) any later version. | ||
| 11 | * | ||
| 12 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 15 | * Lesser General Public License for more details. | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU Lesser General Public | ||
| 18 | * License along with FFmpeg; if not, write to the Free Software | ||
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 20 | */ | ||
| 21 | |||
| 22 | /** | ||
| 23 | * @file | ||
| 24 | * H.274 film grain synthesis. | ||
| 25 | * @author Niklas Haas <ffmpeg@haasn.xyz> | ||
| 26 | */ | ||
| 27 | |||
| 28 | #include "libavutil/avassert.h" | ||
| 29 | #include "libavutil/imgutils.h" | ||
| 30 | |||
| 31 | #include "h274.h" | ||
| 32 | |||
| 33 | static const int8_t Gaussian_LUT[2048+4]; | ||
| 34 | static const uint32_t Seed_LUT[256]; | ||
| 35 | static const int8_t R64T[64][64]; | ||
| 36 | |||
| 37 | ✗ | static void prng_shift(uint32_t *state) | |
| 38 | { | ||
| 39 | // Primitive polynomial x^31 + x^3 + 1 (modulo 2) | ||
| 40 | ✗ | uint32_t x = *state; | |
| 41 | ✗ | uint8_t feedback = 1u ^ (x >> 2) ^ (x >> 30); | |
| 42 | ✗ | *state = (x << 1) | (feedback & 1u); | |
| 43 | ✗ | } | |
| 44 | |||
| 45 | ✗ | static void init_slice_c(int8_t out[64][64], uint8_t h, uint8_t v, | |
| 46 | int16_t tmp[64][64]) | ||
| 47 | { | ||
| 48 | static const uint8_t deblock_factors[13] = { | ||
| 49 | 64, 71, 77, 84, 90, 96, 103, 109, 116, 122, 128, 128, 128 | ||
| 50 | }; | ||
| 51 | |||
| 52 | ✗ | const uint8_t deblock_coeff = deblock_factors[v]; | |
| 53 | ✗ | const uint8_t freq_h = ((h + 3) << 2) - 1; | |
| 54 | ✗ | const uint8_t freq_v = ((v + 3) << 2) - 1; | |
| 55 | ✗ | uint32_t seed = Seed_LUT[h + v * 13]; | |
| 56 | |||
| 57 | // Initialize with random gaussian values, using the output array as a | ||
| 58 | // temporary buffer for these intermediate values. | ||
| 59 | // | ||
| 60 | // Note: To make the subsequent matrix multiplication cache friendlier, we | ||
| 61 | // store each *column* of the starting image in a *row* of `out` | ||
| 62 | ✗ | for (int l = 0; l <= freq_v; l++) { | |
| 63 | ✗ | for (int k = 0; k <= freq_h; k += 4) { | |
| 64 | ✗ | uint16_t offset = seed % 2048; | |
| 65 | ✗ | out[l][k + 0] = Gaussian_LUT[offset + 0]; | |
| 66 | ✗ | out[l][k + 1] = Gaussian_LUT[offset + 1]; | |
| 67 | ✗ | out[l][k + 2] = Gaussian_LUT[offset + 2]; | |
| 68 | ✗ | out[l][k + 3] = Gaussian_LUT[offset + 3]; | |
| 69 | ✗ | prng_shift(&seed); | |
| 70 | } | ||
| 71 | } | ||
| 72 | |||
| 73 | ✗ | out[0][0] = 0; | |
| 74 | |||
| 75 | // 64x64 inverse integer transform | ||
| 76 | ✗ | for (int y = 0; y < 64; y++) { | |
| 77 | ✗ | for (int x = 0; x <= freq_v; x++) { | |
| 78 | ✗ | int32_t sum = 0; | |
| 79 | ✗ | for (int p = 0; p <= freq_h; p++) | |
| 80 | ✗ | sum += R64T[y][p] * out[x][p]; | |
| 81 | ✗ | tmp[y][x] = (sum + 128) >> 8; | |
| 82 | } | ||
| 83 | } | ||
| 84 | |||
| 85 | ✗ | for (int y = 0; y < 64; y++) { | |
| 86 | ✗ | for (int x = 0; x < 64; x++) { | |
| 87 | ✗ | int32_t sum = 0; | |
| 88 | ✗ | for (int p = 0; p <= freq_v; p++) | |
| 89 | ✗ | sum += tmp[x][p] * R64T[y][p]; // R64T^T = R64 | |
| 90 | // Renormalize and clip to [-127, 127] | ||
| 91 | ✗ | out[y][x] = av_clip((sum + 128) >> 8, -127, 127); | |
| 92 | } | ||
| 93 | } | ||
| 94 | |||
| 95 | // Deblock horizontal edges by simple attentuation of values | ||
| 96 | ✗ | for (int y = 0; y < 64; y += 8) { | |
| 97 | ✗ | for (int x = 0; x < 64; x++) { | |
| 98 | ✗ | out[y + 0][x] = (out[y + 0][x] * deblock_coeff) >> 7; | |
| 99 | ✗ | out[y + 7][x] = (out[y + 7][x] * deblock_coeff) >> 7; | |
| 100 | } | ||
| 101 | } | ||
| 102 | ✗ | } | |
| 103 | |||
| 104 | ✗ | static void init_slice(H274FilmGrainDatabase *database, uint8_t h, uint8_t v) | |
| 105 | { | ||
| 106 | ✗ | if (database->residency[h] & (1 << v)) | |
| 107 | ✗ | return; | |
| 108 | |||
| 109 | ✗ | database->residency[h] |= (1 << v); | |
| 110 | ✗ | init_slice_c(database->db[h][v], h, v, database->slice_tmp); | |
| 111 | } | ||
| 112 | |||
| 113 | // Computes the average of an 8x8 block | ||
| 114 | ✗ | static uint16_t avg_8x8_c(const uint8_t *in, int in_stride) | |
| 115 | { | ||
| 116 | ✗ | uint16_t avg[8] = {0}; // summing over an array vectorizes better | |
| 117 | |||
| 118 | ✗ | for (int y = 0; y < 8; y++) { | |
| 119 | ✗ | for (int x = 0; x < 8; x++) | |
| 120 | ✗ | avg[x] += in[x]; | |
| 121 | ✗ | in += in_stride; | |
| 122 | } | ||
| 123 | |||
| 124 | ✗ | return (avg[0] + avg[1] + avg[2] + avg[3] + | |
| 125 | ✗ | avg[4] + avg[5] + avg[6] + avg[7]) >> 6; | |
| 126 | } | ||
| 127 | |||
| 128 | // Synthesize an 8x8 block of film grain by copying the pattern from `db` | ||
| 129 | ✗ | static void synth_grain_8x8_c(int8_t *out, const int out_stride, | |
| 130 | const int16_t scale, const uint8_t shift, | ||
| 131 | const int8_t *db) | ||
| 132 | { | ||
| 133 | ✗ | for (int y = 0; y < 8; y++) { | |
| 134 | ✗ | for (int x = 0; x < 8; x++) | |
| 135 | ✗ | out[x] = (scale * db[x]) >> shift; | |
| 136 | |||
| 137 | ✗ | out += out_stride; | |
| 138 | ✗ | db += 64; | |
| 139 | } | ||
| 140 | ✗ | } | |
| 141 | |||
| 142 | // Deblock vertical edges of an 8x8 block, mixing with the previous block | ||
| 143 | ✗ | static void deblock_8x8_c(int8_t *out, const int out_stride) | |
| 144 | { | ||
| 145 | ✗ | for (int y = 0; y < 8; y++) { | |
| 146 | ✗ | const int8_t l1 = out[-2], l0 = out[-1]; | |
| 147 | ✗ | const int8_t r0 = out[0], r1 = out[1]; | |
| 148 | ✗ | out[0] = (l0 + r0 * 2 + r1) >> 2; | |
| 149 | ✗ | out[-1] = (r0 + l0 * 2 + l1) >> 2; | |
| 150 | ✗ | out += out_stride; | |
| 151 | } | ||
| 152 | ✗ | } | |
| 153 | |||
| 154 | // Generates a single 8x8 block of grain, optionally also applying the | ||
| 155 | // deblocking step (note that this implies writing to the previous block). | ||
| 156 | ✗ | static av_always_inline void generate(int8_t *out, int out_stride, | |
| 157 | const uint8_t *in, int in_stride, | ||
| 158 | H274FilmGrainDatabase *database, | ||
| 159 | const AVFilmGrainH274Params *h274, | ||
| 160 | int c, int invert, int deblock, | ||
| 161 | int y_offset, int x_offset) | ||
| 162 | { | ||
| 163 | ✗ | const uint8_t shift = h274->log2_scale_factor + 6; | |
| 164 | ✗ | const uint16_t avg = avg_8x8_c(in, in_stride); | |
| 165 | int16_t scale; | ||
| 166 | uint8_t h, v; | ||
| 167 | ✗ | int8_t s = -1; | |
| 168 | |||
| 169 | // FIXME: This logic only generates grain with a single | ||
| 170 | // intensity interval. Strictly speaking, the H.274 specification allows | ||
| 171 | // for overlapping intensity intervals, however SMPTE RDD 5-2006 (which | ||
| 172 | // concerns the implementation of H.274 for H.264) forbids this as it | ||
| 173 | // requires a nontrivial grain synthesis process (FFT). | ||
| 174 | // | ||
| 175 | // In principle, we should detect this possibility ahead of time and warn | ||
| 176 | // the user that the output is unlikely to be correct, or alternatively | ||
| 177 | // return an AVERROR_PATCHWELCOME. | ||
| 178 | ✗ | for (int i = 0; i < h274->num_intensity_intervals[c]; i++) { | |
| 179 | ✗ | if (avg >= h274->intensity_interval_lower_bound[c][i] && | |
| 180 | ✗ | avg <= h274->intensity_interval_upper_bound[c][i]) | |
| 181 | { | ||
| 182 | ✗ | s = i; | |
| 183 | ✗ | break; | |
| 184 | } | ||
| 185 | } | ||
| 186 | |||
| 187 | ✗ | if (s < 0) { | |
| 188 | // No matching intensity interval, synthesize blank film grain | ||
| 189 | ✗ | for (int y = 0; y < 8; y++) | |
| 190 | ✗ | memset(out + y * out_stride, 0, sizeof(int8_t[8])); | |
| 191 | ✗ | return; | |
| 192 | } | ||
| 193 | |||
| 194 | ✗ | h = av_clip(h274->comp_model_value[c][s][1], 2, 14) - 2; | |
| 195 | ✗ | v = av_clip(h274->comp_model_value[c][s][2], 2, 14) - 2; | |
| 196 | ✗ | init_slice(database, h, v); | |
| 197 | |||
| 198 | ✗ | scale = h274->comp_model_value[c][s][0]; | |
| 199 | ✗ | if (invert) | |
| 200 | ✗ | scale = -scale; | |
| 201 | |||
| 202 | ✗ | synth_grain_8x8_c(out, out_stride, scale, shift, | |
| 203 | ✗ | &database->db[h][v][y_offset][x_offset]); | |
| 204 | |||
| 205 | ✗ | if (deblock) | |
| 206 | ✗ | deblock_8x8_c(out, out_stride); | |
| 207 | } | ||
| 208 | |||
| 209 | // Saturating 8-bit sum of a+b | ||
| 210 | ✗ | static void add_8x8_clip_c(uint8_t *out, const uint8_t *a, const int8_t *b, | |
| 211 | int n) | ||
| 212 | { | ||
| 213 | ✗ | for (int i = 0; i < n; i++) | |
| 214 | ✗ | out[i] = av_clip_uint8(a[i] + b[i]); | |
| 215 | ✗ | } | |
| 216 | |||
| 217 | ✗ | int ff_h274_apply_film_grain(AVFrame *out_frame, const AVFrame *in_frame, | |
| 218 | H274FilmGrainDatabase *database, | ||
| 219 | const AVFilmGrainParams *params) | ||
| 220 | { | ||
| 221 | ✗ | AVFilmGrainH274Params h274 = params->codec.h274; | |
| 222 | av_assert1(params->type == AV_FILM_GRAIN_PARAMS_H274); | ||
| 223 | ✗ | if (h274.model_id != 0) | |
| 224 | ✗ | return AVERROR_PATCHWELCOME; | |
| 225 | |||
| 226 | av_assert1(out_frame->format == in_frame->format); | ||
| 227 | ✗ | if (in_frame->format != AV_PIX_FMT_YUV420P) | |
| 228 | ✗ | return AVERROR_PATCHWELCOME; | |
| 229 | |||
| 230 | ✗ | for (int c = 0; c < 3; c++) { | |
| 231 | static const uint8_t color_offset[3] = { 0, 85, 170 }; | ||
| 232 | ✗ | uint32_t seed = Seed_LUT[(params->seed + color_offset[c]) % 256]; | |
| 233 | ✗ | const int width = c > 0 ? AV_CEIL_RSHIFT(out_frame->width, 1) : out_frame->width; | |
| 234 | ✗ | const int height = c > 0 ? AV_CEIL_RSHIFT(out_frame->height, 1) : out_frame->height; | |
| 235 | |||
| 236 | ✗ | uint8_t * const out = out_frame->data[c]; | |
| 237 | ✗ | const int out_stride = out_frame->linesize[c]; | |
| 238 | ✗ | int8_t * const grain = out_frame->data[c]; // re-use output buffer for grain | |
| 239 | ✗ | const int grain_stride = out_stride; | |
| 240 | ✗ | const uint8_t * const in = in_frame->data[c]; | |
| 241 | ✗ | const int in_stride = in_frame->linesize[c]; | |
| 242 | |||
| 243 | ✗ | if (!h274.component_model_present[c]) { | |
| 244 | ✗ | av_image_copy_plane(out, out_stride, in, in_stride, | |
| 245 | width * sizeof(uint8_t), height); | ||
| 246 | ✗ | continue; | |
| 247 | } | ||
| 248 | |||
| 249 | ✗ | if (c > 0) { | |
| 250 | // Adaptation for 4:2:0 chroma subsampling | ||
| 251 | ✗ | for (int i = 0; i < h274.num_intensity_intervals[c]; i++) { | |
| 252 | ✗ | h274.comp_model_value[c][i][0] >>= 1; | |
| 253 | ✗ | h274.comp_model_value[c][i][1] *= 2; | |
| 254 | ✗ | h274.comp_model_value[c][i][2] *= 2; | |
| 255 | } | ||
| 256 | } | ||
| 257 | |||
| 258 | // Film grain synthesis is done in 8x8 blocks, but the PRNG state is | ||
| 259 | // only advanced in 16x16 blocks, so use a nested loop | ||
| 260 | ✗ | for (int y = 0; y < height; y += 16) { | |
| 261 | ✗ | for (int x = 0; x < width; x += 16) { | |
| 262 | ✗ | uint16_t x_offset = (seed >> 16) % 52; | |
| 263 | ✗ | uint16_t y_offset = (seed & 0xFFFF) % 56; | |
| 264 | ✗ | const int invert = (seed & 0x1); | |
| 265 | ✗ | x_offset &= 0xFFFC; | |
| 266 | ✗ | y_offset &= 0xFFF8; | |
| 267 | ✗ | prng_shift(&seed); | |
| 268 | |||
| 269 | ✗ | for (int yy = 0; yy < 16 && y+yy < height; yy += 8) { | |
| 270 | ✗ | for (int xx = 0; xx < 16 && x+xx < width; xx += 8) { | |
| 271 | ✗ | generate(grain + (y+yy) * grain_stride + (x+xx), grain_stride, | |
| 272 | ✗ | in + (y+yy) * in_stride + (x+xx), in_stride, | |
| 273 | ✗ | database, &h274, c, invert, (x+xx) > 0, | |
| 274 | y_offset + yy, x_offset + xx); | ||
| 275 | } | ||
| 276 | } | ||
| 277 | } | ||
| 278 | } | ||
| 279 | |||
| 280 | // Final output blend pass, done after grain synthesis is complete | ||
| 281 | // because deblocking depends on previous grain values | ||
| 282 | ✗ | for (int y = 0; y < height; y++) { | |
| 283 | ✗ | add_8x8_clip_c(out + y * out_stride, in + y * in_stride, | |
| 284 | ✗ | grain + y * grain_stride, width); | |
| 285 | } | ||
| 286 | } | ||
| 287 | |||
| 288 | ✗ | return 0; | |
| 289 | } | ||
| 290 | |||
| 291 | // These tables are all taken from the SMPTE RDD 5-2006 specification | ||
| 292 | static const int8_t Gaussian_LUT[2048+4] = { | ||
| 293 | -11, 12, 103, -11, 42, -35, 12, 59, 77, 98, -87, 3, 65, -78, 45, 56, -51, 21, | ||
| 294 | 13, -11, -20, -19, 33, -127, 17, -6, -105, 18, 19, 71, 48, -10, -38, 42, | ||
| 295 | -2, 75, -67, 52, -90, 33, -47, 21, -3, -56, 49, 1, -57, -42, -1, 120, -127, | ||
| 296 | -108, -49, 9, 14, 127, 122, 109, 52, 127, 2, 7, 114, 19, 30, 12, 77, 112, | ||
| 297 | 82, -61, -127, 111, -52, -29, 2, -49, -24, 58, -29, -73, 12, 112, 67, 79, | ||
| 298 | -3, -114, -87, -6, -5, 40, 58, -81, 49, -27, -31, -34, -105, 50, 16, -24, | ||
| 299 | -35, -14, -15, -127, -55, -22, -55, -127, -112, 5, -26, -72, 127, 127, -2, | ||
| 300 | 41, 87, -65, -16, 55, 19, 91, -81, -65, -64, 35, -7, -54, 99, -7, 88, 125, | ||
| 301 | -26, 91, 0, 63, 60, -14, -23, 113, -33, 116, 14, 26, 51, -16, 107, -8, 53, | ||
| 302 | 38, -34, 17, -7, 4, -91, 6, 63, 63, -15, 39, -36, 19, 55, 17, -51, 40, 33, | ||
| 303 | -37, 126, -39, -118, 17, -30, 0, 19, 98, 60, 101, -12, -73, -17, -52, 98, | ||
| 304 | 3, 3, 60, 33, -3, -2, 10, -42, -106, -38, 14, 127, 16, -127, -31, -86, -39, | ||
| 305 | -56, 46, -41, 75, 23, -19, -22, -70, 74, -54, -2, 32, -45, 17, -92, 59, | ||
| 306 | -64, -67, 56, -102, -29, -87, -34, -92, 68, 5, -74, -61, 93, -43, 14, -26, | ||
| 307 | -38, -126, -17, 16, -127, 64, 34, 31, 93, 17, -51, -59, 71, 77, 81, 127, | ||
| 308 | 127, 61, 33, -106, -93, 0, 0, 75, -69, 71, 127, -19, -111, 30, 23, 15, 2, | ||
| 309 | 39, 92, 5, 42, 2, -6, 38, 15, 114, -30, -37, 50, 44, 106, 27, 119, 7, -80, | ||
| 310 | 25, -68, -21, 92, -11, -1, 18, 41, -50, 79, -127, -43, 127, 18, 11, -21, | ||
| 311 | 32, -52, 27, -88, -90, -39, -19, -10, 24, -118, 72, -24, -44, 2, 12, 86, | ||
| 312 | -107, 39, -33, -127, 47, 51, -24, -22, 46, 0, 15, -35, -69, -2, -74, 24, | ||
| 313 | -6, 0, 29, -3, 45, 32, -32, 117, -45, 79, -24, -17, -109, -10, -70, 88, | ||
| 314 | -48, 24, -91, 120, -37, 50, -127, 58, 32, -82, -10, -17, -7, 46, -127, -15, | ||
| 315 | 89, 127, 17, 98, -39, -33, 37, 42, -40, -32, -21, 105, -19, 19, 19, -59, | ||
| 316 | -9, 30, 0, -127, 34, 127, -84, 75, 24, -40, -49, -127, -107, -14, 45, -75, | ||
| 317 | 1, 30, -20, 41, -68, -40, 12, 127, -3, 5, 20, -73, -59, -127, -3, -3, -53, | ||
| 318 | -6, -119, 93, 120, -80, -50, 0, 20, -46, 67, 78, -12, -22, -127, 36, -41, | ||
| 319 | 56, 119, -5, -116, -22, 68, -14, -90, 24, -82, -44, -127, 107, -25, -37, | ||
| 320 | 40, -7, -7, -82, 5, -87, 44, -34, 9, -127, 39, 70, 49, -63, 74, -49, 109, | ||
| 321 | -27, -89, -47, -39, 44, 49, -4, 60, -42, 80, 9, -127, -9, -56, -49, 125, | ||
| 322 | -66, 47, 36, 117, 15, -11, -96, 109, 94, -17, -56, 70, 8, -14, -5, 50, 37, | ||
| 323 | -45, 120, -30, -76, 40, -46, 6, 3, 69, 17, -78, 1, -79, 6, 127, 43, 26, | ||
| 324 | 127, -127, 28, -55, -26, 55, 112, 48, 107, -1, -77, -1, 53, -9, -22, -43, | ||
| 325 | 123, 108, 127, 102, 68, 46, 5, 1, 123, -13, -55, -34, -49, 89, 65, -105, | ||
| 326 | -5, 94, -53, 62, 45, 30, 46, 18, -35, 15, 41, 47, -98, -24, 94, -75, 127, | ||
| 327 | -114, 127, -68, 1, -17, 51, -95, 47, 12, 34, -45, -75, 89, -107, -9, -58, | ||
| 328 | -29, -109, -24, 127, -61, -13, 77, -45, 17, 19, 83, -24, 9, 127, -66, 54, | ||
| 329 | 4, 26, 13, 111, 43, -113, -22, 10, -24, 83, 67, -14, 75, -123, 59, 127, | ||
| 330 | -12, 99, -19, 64, -38, 54, 9, 7, 61, -56, 3, -57, 113, -104, -59, 3, -9, | ||
| 331 | -47, 74, 85, -55, -34, 12, 118, 28, 93, -72, 13, -99, -72, -20, 30, 72, | ||
| 332 | -94, 19, -54, 64, -12, -63, -25, 65, 72, -10, 127, 0, -127, 103, -20, -73, | ||
| 333 | -112, -103, -6, 28, -42, -21, -59, -29, -26, 19, -4, -51, 94, -58, -95, | ||
| 334 | -37, 35, 20, -69, 127, -19, -127, -22, -120, -53, 37, 74, -127, -1, -12, | ||
| 335 | -119, -53, -28, 38, 69, 17, 16, -114, 89, 62, 24, 37, -23, 49, -101, -32, | ||
| 336 | -9, -95, -53, 5, 93, -23, -49, -8, 51, 3, -75, -90, -10, -39, 127, -86, | ||
| 337 | -22, 20, 20, 113, 75, 52, -31, 92, -63, 7, -12, 46, 36, 101, -43, -17, -53, | ||
| 338 | -7, -38, -76, -31, -21, 62, 31, 62, 20, -127, 31, 64, 36, 102, -85, -10, | ||
| 339 | 77, 80, 58, -79, -8, 35, 8, 80, -24, -9, 3, -17, 72, 127, 83, -87, 55, 18, | ||
| 340 | -119, -123, 36, 10, 127, 56, -55, 113, 13, 26, 32, -13, -48, 22, -13, 5, | ||
| 341 | 58, 27, 24, 26, -11, -36, 37, -92, 78, 81, 9, 51, 14, 67, -13, 0, 32, 45, | ||
| 342 | -76, 32, -39, -22, -49, -127, -27, 31, -9, 36, 14, 71, 13, 57, 12, -53, | ||
| 343 | -86, 53, -44, -35, 2, 127, 12, -66, -44, 46, -115, 3, 10, 56, -35, 119, | ||
| 344 | -19, -61, 52, -59, -127, -49, -23, 4, -5, 17, -82, -6, 127, 25, 79, 67, 64, | ||
| 345 | -25, 14, -64, -37, -127, -28, 21, -63, 66, -53, -41, 109, -62, 15, -22, 13, | ||
| 346 | 29, -63, 20, 27, 95, -44, -59, -116, -10, 79, -49, 22, -43, -16, 46, -47, | ||
| 347 | -120, -36, -29, -52, -44, 29, 127, -13, 49, -9, -127, 75, -28, -23, 88, 59, | ||
| 348 | 11, -95, 81, -59, 58, 60, -26, 40, -92, -3, -22, -58, -45, -59, -22, -53, | ||
| 349 | 71, -29, 66, -32, -23, 14, -17, -66, -24, -28, -62, 47, 38, 17, 16, -37, | ||
| 350 | -24, -11, 8, -27, -19, 59, 45, -49, -47, -4, -22, -81, 30, -67, -127, 74, | ||
| 351 | 102, 5, -18, 98, 34, -66, 42, -52, 7, -59, 24, -58, -19, -24, -118, -73, | ||
| 352 | 91, 15, -16, 79, -32, -79, -127, -36, 41, 77, -83, 2, 56, 22, -75, 127, | ||
| 353 | -16, -21, 12, 31, 56, -113, -127, 90, 55, 61, 12, 55, -14, -113, -14, 32, | ||
| 354 | 49, -67, -17, 91, -10, 1, 21, 69, -70, 99, -19, -112, 66, -90, -10, -9, | ||
| 355 | -71, 127, 50, -81, -49, 24, 61, -61, -111, 7, -41, 127, 88, -66, 108, -127, | ||
| 356 | -6, 36, -14, 41, -50, 14, 14, 73, -101, -28, 77, 127, -8, -100, 88, 38, | ||
| 357 | 121, 88, -125, -60, 13, -94, -115, 20, -67, -87, -94, -119, 44, -28, -30, | ||
| 358 | 18, 5, -53, -61, 20, -43, 11, -77, -60, 13, 29, 3, 6, -72, 38, -60, -11, | ||
| 359 | 108, -53, 41, 66, -12, -127, -127, -49, 24, 29, 46, 36, 91, 34, -33, 116, | ||
| 360 | -51, -34, -52, 91, 7, -83, 73, -26, -103, 24, -10, 76, 84, 5, 68, -80, -13, | ||
| 361 | -17, -32, -48, 20, 50, 26, 10, 63, -104, -14, 37, 127, 114, 97, 35, 1, -33, | ||
| 362 | -55, 127, -124, -33, 61, -7, 119, -32, -127, -53, -42, 63, 3, -5, -26, 70, | ||
| 363 | -58, -33, -44, -43, 34, -56, -127, 127, 25, -35, -11, 16, -81, 29, -58, 40, | ||
| 364 | -127, -127, 20, -47, -11, -36, -63, -52, -32, -82, 78, -76, -73, 8, 27, | ||
| 365 | -72, -9, -74, -85, -86, -57, 25, 78, -10, -97, 35, -65, 8, -59, 14, 1, -42, | ||
| 366 | 32, -88, -44, 17, -3, -9, 59, 40, 12, -108, -40, 24, 34, 18, -28, 2, 51, | ||
| 367 | -110, -4, 100, 1, 65, 22, 0, 127, 61, 45, 25, -31, 6, 9, -7, -48, 99, 16, | ||
| 368 | 44, -2, -40, 32, -39, -52, 10, -110, -19, 56, -127, 69, 26, 51, 92, 40, 61, | ||
| 369 | -52, 45, -38, 13, 85, 122, 27, 66, 45, -111, -83, -3, 31, 37, 19, -36, 58, | ||
| 370 | 71, 39, -78, -47, 58, -78, 8, -62, -36, -14, 61, 42, -127, 71, -4, 24, -54, | ||
| 371 | 52, -127, 67, -4, -42, 30, -63, 59, -3, -1, -18, -46, -92, -81, -96, -14, | ||
| 372 | -53, -10, -11, -77, 13, 1, 8, -67, -127, 127, -28, 26, -14, 18, -13, -26, | ||
| 373 | 2, 10, -46, -32, -15, 27, -31, -59, 59, 77, -121, 28, 40, -54, -62, -31, | ||
| 374 | -21, -37, -32, -6, -127, -25, -60, 70, -127, 112, -127, 127, 88, -7, 116, | ||
| 375 | 110, 53, 87, -127, 3, 16, 23, 74, -106, -51, 3, 74, -82, -112, -74, 65, 81, | ||
| 376 | 25, 53, 127, -45, -50, -103, -41, -65, -29, 79, -67, 64, -33, -30, -8, 127, | ||
| 377 | 0, -13, -51, 67, -14, 5, -92, 29, -35, -8, -90, -57, -3, 36, 43, 44, -31, | ||
| 378 | -69, -7, 36, 39, -51, 43, -81, 58, 6, 127, 12, 57, 66, 46, 59, -43, -42, | ||
| 379 | 41, -15, -120, 24, 3, -11, 19, -13, 51, 28, 3, 55, -48, -12, -1, 2, 97, | ||
| 380 | -19, 29, 42, 13, 43, 78, -44, 56, -108, -43, -19, 127, 15, -11, -18, -81, | ||
| 381 | 83, -37, 77, -109, 15, 65, -50, 43, 12, 13, 27, 28, 61, 57, 30, 26, 106, | ||
| 382 | -18, 56, 13, 97, 4, -8, -62, -103, 94, 108, -44, 52, 27, -47, -9, 105, -53, | ||
| 383 | 46, 89, 103, -33, 38, -34, 55, 51, 70, -94, -35, -87, -107, -19, -31, 9, | ||
| 384 | -19, 79, -14, 77, 5, -19, -107, 85, 21, -45, -39, -42, 9, -29, 74, 47, -75, | ||
| 385 | 60, -127, 120, -112, -57, -32, 41, 7, 79, 76, 66, 57, 41, -25, 31, 37, -47, | ||
| 386 | -36, 43, -73, -37, 63, 127, -69, -52, 90, -33, -61, 60, -55, 44, 15, 4, | ||
| 387 | -67, 13, -92, 64, 29, -39, -3, 83, -2, -38, -85, -86, 58, 35, -69, -61, 29, | ||
| 388 | -37, -95, -78, 4, 30, -4, -32, -80, -22, -9, -77, 46, 7, -93, -71, 65, 9, | ||
| 389 | -50, 127, -70, 26, -12, -39, -114, 63, -127, -100, 4, -32, 111, 22, -60, | ||
| 390 | 65, -101, 26, -42, 21, -59, -27, -74, 2, -94, 6, 126, 5, 76, -88, -9, -43, | ||
| 391 | -101, 127, 1, 125, 92, -63, 52, 56, 4, 81, -127, 127, 80, 127, -29, 30, | ||
| 392 | 116, -74, -17, -57, 105, 48, 45, 25, -72, 48, -38, -108, 31, -34, 4, -11, | ||
| 393 | 41, -127, 52, -104, -43, -37, 52, 2, 47, 87, -9, 77, 27, -41, -25, 90, 86, | ||
| 394 | -56, 75, 10, 33, 78, 58, 127, 127, -7, -73, 49, -33, -106, -35, 38, 57, 53, | ||
| 395 | -17, -4, 83, 52, -108, 54, -125, 28, 23, 56, -43, -88, -17, -6, 47, 23, -9, | ||
| 396 | 0, -13, 111, 75, 27, -52, -38, -34, 39, 30, 66, 39, 38, -64, 38, 3, 21, | ||
| 397 | -32, -51, -28, 54, -38, -87, 20, 52, 115, 18, -81, -70, 0, -14, -46, -46, | ||
| 398 | -3, 125, 16, -14, 23, -82, -84, -69, -20, -65, -127, 9, 81, -49, 61, 7, | ||
| 399 | -36, -45, -42, 57, -26, 47, 20, -85, 46, -13, 41, -37, -75, -60, 86, -78, | ||
| 400 | -127, 12, 50, 2, -3, 13, 47, 5, 19, -78, -55, -27, 65, -71, 12, -108, 20, | ||
| 401 | -16, 11, -31, 63, -55, 37, 75, -17, 127, -73, -33, -28, -120, 105, 68, 106, | ||
| 402 | -103, -106, 71, 61, 2, 23, -3, 33, -5, -15, -67, -15, -23, -54, 15, -63, | ||
| 403 | 76, 58, -110, 1, 83, -27, 22, 75, -39, -17, -11, 64, -17, -127, -54, -66, | ||
| 404 | 31, 96, 116, 3, -114, -7, -108, -63, 97, 9, 50, 8, 75, -28, 72, 112, -36, | ||
| 405 | -112, 95, -50, 23, -13, -19, 55, 21, 23, 92, 91, 22, -49, 16, -75, 23, 9, | ||
| 406 | -49, -97, -37, 49, -36, 36, -127, -86, 43, 127, -24, -24, 84, 83, -35, -34, | ||
| 407 | -12, 109, 102, -38, 51, -68, 34, 19, -22, 49, -32, 127, 40, 24, -93, -4, | ||
| 408 | -3, 105, 3, -58, -18, 8, 127, -18, 125, 68, 69, -62, 30, -36, 54, -57, -24, | ||
| 409 | 17, 43, -36, -27, -57, -67, -21, -10, -49, 68, 12, 65, 4, 48, 55, 127, -75, | ||
| 410 | 44, 89, -66, -13, -78, -82, -91, 22, 30, 33, -40, -87, -34, 96, -91, 39, | ||
| 411 | 10, -64, -3, -12, 127, -50, -37, -56, 23, -35, -36, -54, 90, -91, 2, 50, | ||
| 412 | 77, -6, -127, 16, 46, -5, -73, 0, -56, -18, -72, 28, 93, 60, 49, 20, 18, | ||
| 413 | 111, -111, 32, -83, 47, 47, -10, 35, -88, 43, 57, -98, 127, -17, 0, 1, -39, | ||
| 414 | -127, -2, 0, 63, 93, 0, 36, -66, -61, -19, 39, -127, 58, 50, -17, 127, 88, | ||
| 415 | -43, -108, -51, -16, 7, -36, 68, 46, -14, 107, 40, 57, 7, 19, 8, 3, 88, | ||
| 416 | -90, -92, -18, -21, -24, 13, 7, -4, -78, -91, -4, 8, -35, -5, 19, 2, -111, | ||
| 417 | 4, -66, -81, 122, -20, -34, -37, -84, 127, 68, 46, 17, 47, | ||
| 418 | |||
| 419 | // Repeat the beginning of the array to allow wrapping reads | ||
| 420 | -11, 12, 103, -11, | ||
| 421 | }; | ||
| 422 | |||
| 423 | static const uint32_t Seed_LUT[256] = { | ||
| 424 | 747538460, 1088979410, 1744950180, 1767011913, 1403382928, | ||
| 425 | 521866116, 1060417601, 2110622736, 1557184770, 105289385, 585624216, | ||
| 426 | 1827676546, 1191843873, 1018104344, 1123590530, 663361569, 2023850500, | ||
| 427 | 76561770, 1226763489, 80325252, 1992581442, 502705249, 740409860, | ||
| 428 | 516219202, 557974537, 1883843076, 720112066, 1640137737, 1820967556, | ||
| 429 | 40667586, 155354121, 1820967557, 1115949072, 1631803309, 98284748, | ||
| 430 | 287433856, 2119719977, 988742797, 1827432592, 579378475, 1017745956, | ||
| 431 | 1309377032, 1316535465, 2074315269, 1923385360, 209722667, 1546228260, | ||
| 432 | 168102420, 135274561, 355958469, 248291472, 2127839491, 146920100, | ||
| 433 | 585982612, 1611702337, 696506029, 1386498192, 1258072451, 1212240548, | ||
| 434 | 1043171860, 1217404993, 1090770605, 1386498193, 169093201, 541098240, | ||
| 435 | 1468005469, 456510673, 1578687785, 1838217424, 2010752065, 2089828354, | ||
| 436 | 1362717428, 970073673, 854129835, 714793201, 1266069081, 1047060864, | ||
| 437 | 1991471829, 1098097741, 913883585, 1669598224, 1337918685, 1219264706, | ||
| 438 | 1799741108, 1834116681, 683417731, 1120274457, 1073098457, 1648396544, | ||
| 439 | 176642749, 31171789, 718317889, 1266977808, 1400892508, 549749008, | ||
| 440 | 1808010512, 67112961, 1005669825, 903663673, 1771104465, 1277749632, | ||
| 441 | 1229754427, 950632997, 1979371465, 2074373264, 305357524, 1049387408, | ||
| 442 | 1171033360, 1686114305, 2147468765, 1941195985, 117709841, 809550080, | ||
| 443 | 991480851, 1816248997, 1561503561, 329575568, 780651196, 1659144592, | ||
| 444 | 1910793616, 604016641, 1665084765, 1530186961, 1870928913, 809550081, | ||
| 445 | 2079346113, 71307521, 876663040, 1073807360, 832356664, 1573927377, | ||
| 446 | 204073344, 2026918147, 1702476788, 2043881033, 57949587, 2001393952, | ||
| 447 | 1197426649, 1186508931, 332056865, 950043140, 890043474, 349099312, | ||
| 448 | 148914948, 236204097, 2022643605, 1441981517, 498130129, 1443421481, | ||
| 449 | 924216797, 1817491777, 1913146664, 1411989632, 929068432, 495735097, | ||
| 450 | 1684636033, 1284520017, 432816184, 1344884865, 210843729, 676364544, | ||
| 451 | 234449232, 12112337, 1350619139, 1753272996, 2037118872, 1408560528, | ||
| 452 | 533334916, 1043640385, 357326099, 201376421, 110375493, 541106497, | ||
| 453 | 416159637, 242512193, 777294080, 1614872576, 1535546636, 870600145, | ||
| 454 | 910810409, 1821440209, 1605432464, 1145147393, 951695441, 1758494976, | ||
| 455 | 1506656568, 1557150160, 608221521, 1073840384, 217672017, 684818688, | ||
| 456 | 1750138880, 16777217, 677990609, 953274371, 1770050213, 1359128393, | ||
| 457 | 1797602707, 1984616737, 1865815816, 2120835200, 2051677060, 1772234061, | ||
| 458 | 1579794881, 1652821009, 1742099468, 1887260865, 46468113, 1011925248, | ||
| 459 | 1134107920, 881643832, 1354774993, 472508800, 1892499769, 1752793472, | ||
| 460 | 1962502272, 687898625, 883538000, 1354355153, 1761673473, 944820481, | ||
| 461 | 2020102353, 22020353, 961597696, 1342242816, 964808962, 1355809701, | ||
| 462 | 17016649, 1386540177, 647682692, 1849012289, 751668241, 1557184768, | ||
| 463 | 127374604, 1927564752, 1045744913, 1614921984, 43588881, 1016185088, | ||
| 464 | 1544617984, 1090519041, 136122424, 215038417, 1563027841, 2026918145, | ||
| 465 | 1688778833, 701530369, 1372639488, 1342242817, 2036945104, 953274369, | ||
| 466 | 1750192384, 16842753, 964808960, 1359020032, 1358954497 | ||
| 467 | }; | ||
| 468 | |||
| 469 | // Note: This is pre-transposed, i.e. stored column-major order | ||
| 470 | static const int8_t R64T[64][64] = { | ||
| 471 | { | ||
| 472 | 32, 45, 45, 45, 45, 45, 45, 45, 44, 44, 44, 44, 43, 43, 43, 42, | ||
| 473 | 42, 41, 41, 40, 40, 39, 39, 38, 38, 37, 36, 36, 35, 34, 34, 33, | ||
| 474 | 32, 31, 30, 30, 29, 28, 27, 26, 25, 24, 23, 22, 21, 20, 19, 18, | ||
| 475 | 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 4, 3, 2, 1, | ||
| 476 | }, { | ||
| 477 | 32, 45, 45, 44, 43, 42, 41, 39, 38, 36, 34, 31, 29, 26, 23, 20, | ||
| 478 | 17, 14, 11, 8, 4, 1, -2, -6, -9, -12, -15, -18, -21, -24, -27, -30, | ||
| 479 | -32, -34, -36, -38, -40, -41, -43, -44, -44, -45, -45, -45, -45, -45, -44, -43, | ||
| 480 | -42, -40, -39, -37, -35, -33, -30, -28, -25, -22, -19, -16, -13, -10, -7, -3, | ||
| 481 | }, { | ||
| 482 | 32, 45, 44, 42, 40, 37, 34, 30, 25, 20, 15, 10, 4, -1, -7, -12, | ||
| 483 | -17, -22, -27, -31, -35, -38, -41, -43, -44, -45, -45, -45, -43, -41, -39, -36, | ||
| 484 | -32, -28, -23, -18, -13, -8, -2, 3, 9, 14, 19, 24, 29, 33, 36, 39, | ||
| 485 | 42, 44, 45, 45, 45, 44, 43, 40, 38, 34, 30, 26, 21, 16, 11, 6, | ||
| 486 | }, { | ||
| 487 | 32, 45, 43, 39, 35, 30, 23, 16, 9, 1, -7, -14, -21, -28, -34, -38, | ||
| 488 | -42, -44, -45, -45, -43, -40, -36, -31, -25, -18, -11, -3, 4, 12, 19, 26, | ||
| 489 | 32, 37, 41, 44, 45, 45, 44, 41, 38, 33, 27, 20, 13, 6, -2, -10, | ||
| 490 | -17, -24, -30, -36, -40, -43, -45, -45, -44, -42, -39, -34, -29, -22, -15, -8, | ||
| 491 | }, { | ||
| 492 | 32, 44, 41, 36, 29, 20, 11, 1, -9, -18, -27, -34, -40, -44, -45, -45, | ||
| 493 | -42, -37, -30, -22, -13, -3, 7, 16, 25, 33, 39, 43, 45, 45, 43, 38, | ||
| 494 | 32, 24, 15, 6, -4, -14, -23, -31, -38, -42, -45, -45, -43, -39, -34, -26, | ||
| 495 | -17, -8, 2, 12, 21, 30, 36, 41, 44, 45, 44, 40, 35, 28, 19, 10, | ||
| 496 | }, { | ||
| 497 | 32, 44, 39, 31, 21, 10, -2, -14, -25, -34, -41, -45, -45, -42, -36, -28, | ||
| 498 | -17, -6, 7, 18, 29, 37, 43, 45, 44, 40, 34, 24, 13, 1, -11, -22, | ||
| 499 | -32, -39, -44, -45, -43, -38, -30, -20, -9, 3, 15, 26, 35, 41, 45, 45, | ||
| 500 | 42, 36, 27, 16, 4, -8, -19, -30, -38, -43, -45, -44, -40, -33, -23, -12, | ||
| 501 | }, { | ||
| 502 | 32, 43, 36, 26, 13, -1, -15, -28, -38, -44, -45, -42, -35, -24, -11, 3, | ||
| 503 | 17, 30, 39, 44, 45, 41, 34, 22, 9, -6, -19, -31, -40, -45, -45, -40, | ||
| 504 | -32, -20, -7, 8, 21, 33, 41, 45, 44, 39, 30, 18, 4, -10, -23, -34, | ||
| 505 | -42, -45, -44, -38, -29, -16, -2, 12, 25, 36, 43, 45, 43, 37, 27, 14, | ||
| 506 | }, { | ||
| 507 | 32, 42, 34, 20, 4, -12, -27, -38, -44, -45, -39, -28, -13, 3, 19, 33, | ||
| 508 | 42, 45, 43, 34, 21, 6, -11, -26, -38, -44, -45, -39, -29, -14, 2, 18, | ||
| 509 | 32, 41, 45, 43, 35, 22, 7, -10, -25, -37, -44, -45, -40, -30, -15, 1, | ||
| 510 | 17, 31, 41, 45, 43, 36, 23, 8, -9, -24, -36, -44, -45, -40, -30, -16, | ||
| 511 | }, { | ||
| 512 | 32, 41, 30, 14, -4, -22, -36, -44, -44, -37, -23, -6, 13, 30, 41, 45, | ||
| 513 | 42, 31, 15, -3, -21, -36, -44, -45, -38, -24, -7, 12, 29, 40, 45, 42, | ||
| 514 | 32, 16, -2, -20, -35, -44, -45, -38, -25, -8, 11, 28, 40, 45, 43, 33, | ||
| 515 | 17, -1, -19, -34, -43, -45, -39, -26, -9, 10, 27, 39, 45, 43, 34, 18, | ||
| 516 | }, { | ||
| 517 | 32, 40, 27, 8, -13, -31, -43, -45, -38, -22, -2, 18, 35, 44, 44, 34, | ||
| 518 | 17, -3, -23, -38, -45, -42, -30, -12, 9, 28, 41, 45, 40, 26, 7, -14, | ||
| 519 | -32, -43, -45, -37, -21, -1, 19, 36, 44, 44, 34, 16, -4, -24, -39, -45, | ||
| 520 | -42, -30, -11, 10, 29, 41, 45, 39, 25, 6, -15, -33, -43, -45, -36, -20, | ||
| 521 | }, { | ||
| 522 | 32, 39, 23, 1, -21, -38, -45, -40, -25, -3, 19, 37, 45, 41, 27, 6, | ||
| 523 | -17, -36, -45, -42, -29, -8, 15, 34, 44, 43, 30, 10, -13, -33, -44, -44, | ||
| 524 | -32, -12, 11, 31, 43, 44, 34, 14, -9, -30, -43, -45, -35, -16, 7, 28, | ||
| 525 | 42, 45, 36, 18, -4, -26, -41, -45, -38, -20, 2, 24, 40, 45, 39, 22, | ||
| 526 | }, { | ||
| 527 | 32, 38, 19, -6, -29, -43, -44, -31, -9, 16, 36, 45, 40, 22, -2, -26, | ||
| 528 | -42, -45, -34, -12, 13, 34, 45, 41, 25, 1, -23, -40, -45, -36, -15, 10, | ||
| 529 | 32, 44, 43, 28, 4, -20, -39, -45, -38, -18, 7, 30, 43, 44, 30, 8, | ||
| 530 | -17, -37, -45, -39, -21, 3, 27, 42, 44, 33, 11, -14, -35, -45, -41, -24, | ||
| 531 | }, { | ||
| 532 | 32, 37, 15, -12, -35, -45, -39, -18, 9, 33, 45, 40, 21, -6, -30, -44, | ||
| 533 | -42, -24, 2, 28, 43, 43, 27, 1, -25, -42, -44, -30, -4, 22, 41, 45, | ||
| 534 | 32, 8, -19, -39, -45, -34, -11, 16, 38, 45, 36, 14, -13, -36, -45, -38, | ||
| 535 | -17, 10, 34, 45, 40, 20, -7, -31, -44, -41, -23, 3, 29, 44, 43, 26, | ||
| 536 | }, { | ||
| 537 | 32, 36, 11, -18, -40, -45, -30, -3, 25, 43, 43, 24, -4, -31, -45, -39, | ||
| 538 | -17, 12, 36, 45, 35, 10, -19, -40, -44, -30, -2, 26, 43, 42, 23, -6, | ||
| 539 | -32, -45, -39, -16, 13, 37, 45, 34, 9, -20, -41, -44, -29, -1, 27, 44, | ||
| 540 | 42, 22, -7, -33, -45, -38, -15, 14, 38, 45, 34, 8, -21, -41, -44, -28, | ||
| 541 | }, { | ||
| 542 | 32, 34, 7, -24, -43, -41, -19, 12, 38, 45, 30, 1, -29, -45, -39, -14, | ||
| 543 | 17, 40, 44, 26, -4, -33, -45, -36, -9, 22, 43, 42, 21, -10, -36, -45, | ||
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