blob: 2331ebfbb28b08a975b61bccf2566f834aec5fa1
| 1 | /* |
| 2 | * Header file for hardcoded QDM2 tables |
| 3 | * |
| 4 | * Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de> |
| 5 | * |
| 6 | * This file is part of FFmpeg. |
| 7 | * |
| 8 | * FFmpeg is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU Lesser General Public |
| 10 | * License as published by the Free Software Foundation; either |
| 11 | * version 2.1 of the License, or (at your option) any later version. |
| 12 | * |
| 13 | * FFmpeg is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * Lesser General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU Lesser General Public |
| 19 | * License along with FFmpeg; if not, write to the Free Software |
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 21 | */ |
| 22 | |
| 23 | #ifndef AVCODEC_QDM2_TABLEGEN_H |
| 24 | #define AVCODEC_QDM2_TABLEGEN_H |
| 25 | |
| 26 | #include <stdint.h> |
| 27 | #include <math.h> |
| 28 | #include "libavutil/attributes.h" |
| 29 | #include "qdm2data.h" |
| 30 | |
| 31 | #define SOFTCLIP_THRESHOLD 27600 |
| 32 | #define HARDCLIP_THRESHOLD 35716 |
| 33 | |
| 34 | #if CONFIG_HARDCODED_TABLES |
| 35 | #define softclip_table_init() |
| 36 | #define rnd_table_init() |
| 37 | #define init_noise_samples() |
| 38 | #define qdm2_init_vlc() |
| 39 | #include "libavcodec/qdm2_tables.h" |
| 40 | #else |
| 41 | static uint16_t softclip_table[HARDCLIP_THRESHOLD - SOFTCLIP_THRESHOLD + 1]; |
| 42 | static float noise_table[4096 + 20]; |
| 43 | static uint8_t random_dequant_index[256][5]; |
| 44 | static uint8_t random_dequant_type24[128][3]; |
| 45 | static float noise_samples[128]; |
| 46 | |
| 47 | static av_cold void softclip_table_init(void) { |
| 48 | int i; |
| 49 | double dfl = SOFTCLIP_THRESHOLD - 32767; |
| 50 | float delta = 1.0 / -dfl; |
| 51 | for (i = 0; i < HARDCLIP_THRESHOLD - SOFTCLIP_THRESHOLD + 1; i++) |
| 52 | softclip_table[i] = SOFTCLIP_THRESHOLD - ((int)(sin((float)i * delta) * dfl) & 0x0000FFFF); |
| 53 | } |
| 54 | |
| 55 | |
| 56 | // random generated table |
| 57 | static av_cold void rnd_table_init(void) { |
| 58 | int i,j; |
| 59 | uint32_t ldw; |
| 60 | uint64_t random_seed = 0; |
| 61 | float delta = 1.0 / 16384.0; |
| 62 | for(i = 0; i < 4096 ;i++) { |
| 63 | random_seed = random_seed * 214013 + 2531011; |
| 64 | noise_table[i] = (delta * (float)(((int32_t)random_seed >> 16) & 0x00007FFF)- 1.0) * 1.3; |
| 65 | } |
| 66 | |
| 67 | for (i = 0; i < 256 ;i++) { |
| 68 | random_seed = 81; |
| 69 | ldw = i; |
| 70 | for (j = 0; j < 5 ;j++) { |
| 71 | random_dequant_index[i][j] = ldw / random_seed; |
| 72 | ldw %= random_seed; |
| 73 | random_seed /= 3; |
| 74 | } |
| 75 | } |
| 76 | for (i = 0; i < 128 ;i++) { |
| 77 | random_seed = 25; |
| 78 | ldw = i; |
| 79 | for (j = 0; j < 3 ;j++) { |
| 80 | random_dequant_type24[i][j] = ldw / random_seed; |
| 81 | ldw %= random_seed; |
| 82 | random_seed /= 5; |
| 83 | } |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | |
| 88 | static av_cold void init_noise_samples(void) { |
| 89 | int i; |
| 90 | unsigned random_seed = 0; |
| 91 | float delta = 1.0 / 16384.0; |
| 92 | for (i = 0; i < 128;i++) { |
| 93 | random_seed = random_seed * 214013 + 2531011; |
| 94 | noise_samples[i] = (delta * (float)((random_seed >> 16) & 0x00007fff) - 1.0); |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | static VLC vlc_tab_level; |
| 99 | static VLC vlc_tab_diff; |
| 100 | static VLC vlc_tab_run; |
| 101 | static VLC fft_level_exp_alt_vlc; |
| 102 | static VLC fft_level_exp_vlc; |
| 103 | static VLC fft_stereo_exp_vlc; |
| 104 | static VLC fft_stereo_phase_vlc; |
| 105 | static VLC vlc_tab_tone_level_idx_hi1; |
| 106 | static VLC vlc_tab_tone_level_idx_mid; |
| 107 | static VLC vlc_tab_tone_level_idx_hi2; |
| 108 | static VLC vlc_tab_type30; |
| 109 | static VLC vlc_tab_type34; |
| 110 | static VLC vlc_tab_fft_tone_offset[5]; |
| 111 | |
| 112 | static const uint16_t qdm2_vlc_offs[] = { |
| 113 | 0,260,566,598,894,1166,1230,1294,1678,1950,2214,2278,2310,2570,2834,3124,3448,3838, |
| 114 | }; |
| 115 | |
| 116 | static VLC_TYPE qdm2_table[3838][2]; |
| 117 | |
| 118 | static av_cold void qdm2_init_vlc(void) |
| 119 | { |
| 120 | vlc_tab_level.table = &qdm2_table[qdm2_vlc_offs[0]]; |
| 121 | vlc_tab_level.table_allocated = qdm2_vlc_offs[1] - qdm2_vlc_offs[0]; |
| 122 | init_vlc(&vlc_tab_level, 8, 24, |
| 123 | vlc_tab_level_huffbits, 1, 1, |
| 124 | vlc_tab_level_huffcodes, 2, 2, |
| 125 | INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
| 126 | |
| 127 | vlc_tab_diff.table = &qdm2_table[qdm2_vlc_offs[1]]; |
| 128 | vlc_tab_diff.table_allocated = qdm2_vlc_offs[2] - qdm2_vlc_offs[1]; |
| 129 | init_vlc(&vlc_tab_diff, 8, 37, |
| 130 | vlc_tab_diff_huffbits, 1, 1, |
| 131 | vlc_tab_diff_huffcodes, 2, 2, |
| 132 | INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
| 133 | |
| 134 | vlc_tab_run.table = &qdm2_table[qdm2_vlc_offs[2]]; |
| 135 | vlc_tab_run.table_allocated = qdm2_vlc_offs[3] - qdm2_vlc_offs[2]; |
| 136 | init_vlc(&vlc_tab_run, 5, 6, |
| 137 | vlc_tab_run_huffbits, 1, 1, |
| 138 | vlc_tab_run_huffcodes, 1, 1, |
| 139 | INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
| 140 | |
| 141 | fft_level_exp_alt_vlc.table = &qdm2_table[qdm2_vlc_offs[3]]; |
| 142 | fft_level_exp_alt_vlc.table_allocated = qdm2_vlc_offs[4] - |
| 143 | qdm2_vlc_offs[3]; |
| 144 | init_vlc(&fft_level_exp_alt_vlc, 8, 28, |
| 145 | fft_level_exp_alt_huffbits, 1, 1, |
| 146 | fft_level_exp_alt_huffcodes, 2, 2, |
| 147 | INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
| 148 | |
| 149 | fft_level_exp_vlc.table = &qdm2_table[qdm2_vlc_offs[4]]; |
| 150 | fft_level_exp_vlc.table_allocated = qdm2_vlc_offs[5] - qdm2_vlc_offs[4]; |
| 151 | init_vlc(&fft_level_exp_vlc, 8, 20, |
| 152 | fft_level_exp_huffbits, 1, 1, |
| 153 | fft_level_exp_huffcodes, 2, 2, |
| 154 | INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
| 155 | |
| 156 | fft_stereo_exp_vlc.table = &qdm2_table[qdm2_vlc_offs[5]]; |
| 157 | fft_stereo_exp_vlc.table_allocated = qdm2_vlc_offs[6] - |
| 158 | qdm2_vlc_offs[5]; |
| 159 | init_vlc(&fft_stereo_exp_vlc, 6, 7, |
| 160 | fft_stereo_exp_huffbits, 1, 1, |
| 161 | fft_stereo_exp_huffcodes, 1, 1, |
| 162 | INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
| 163 | |
| 164 | fft_stereo_phase_vlc.table = &qdm2_table[qdm2_vlc_offs[6]]; |
| 165 | fft_stereo_phase_vlc.table_allocated = qdm2_vlc_offs[7] - |
| 166 | qdm2_vlc_offs[6]; |
| 167 | init_vlc(&fft_stereo_phase_vlc, 6, 9, |
| 168 | fft_stereo_phase_huffbits, 1, 1, |
| 169 | fft_stereo_phase_huffcodes, 1, 1, |
| 170 | INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
| 171 | |
| 172 | vlc_tab_tone_level_idx_hi1.table = |
| 173 | &qdm2_table[qdm2_vlc_offs[7]]; |
| 174 | vlc_tab_tone_level_idx_hi1.table_allocated = qdm2_vlc_offs[8] - |
| 175 | qdm2_vlc_offs[7]; |
| 176 | init_vlc(&vlc_tab_tone_level_idx_hi1, 8, 20, |
| 177 | vlc_tab_tone_level_idx_hi1_huffbits, 1, 1, |
| 178 | vlc_tab_tone_level_idx_hi1_huffcodes, 2, 2, |
| 179 | INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
| 180 | |
| 181 | vlc_tab_tone_level_idx_mid.table = |
| 182 | &qdm2_table[qdm2_vlc_offs[8]]; |
| 183 | vlc_tab_tone_level_idx_mid.table_allocated = qdm2_vlc_offs[9] - |
| 184 | qdm2_vlc_offs[8]; |
| 185 | init_vlc(&vlc_tab_tone_level_idx_mid, 8, 24, |
| 186 | vlc_tab_tone_level_idx_mid_huffbits, 1, 1, |
| 187 | vlc_tab_tone_level_idx_mid_huffcodes, 2, 2, |
| 188 | INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
| 189 | |
| 190 | vlc_tab_tone_level_idx_hi2.table = |
| 191 | &qdm2_table[qdm2_vlc_offs[9]]; |
| 192 | vlc_tab_tone_level_idx_hi2.table_allocated = qdm2_vlc_offs[10] - |
| 193 | qdm2_vlc_offs[9]; |
| 194 | init_vlc(&vlc_tab_tone_level_idx_hi2, 8, 24, |
| 195 | vlc_tab_tone_level_idx_hi2_huffbits, 1, 1, |
| 196 | vlc_tab_tone_level_idx_hi2_huffcodes, 2, 2, |
| 197 | INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
| 198 | |
| 199 | vlc_tab_type30.table = &qdm2_table[qdm2_vlc_offs[10]]; |
| 200 | vlc_tab_type30.table_allocated = qdm2_vlc_offs[11] - qdm2_vlc_offs[10]; |
| 201 | init_vlc(&vlc_tab_type30, 6, 9, |
| 202 | vlc_tab_type30_huffbits, 1, 1, |
| 203 | vlc_tab_type30_huffcodes, 1, 1, |
| 204 | INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
| 205 | |
| 206 | vlc_tab_type34.table = &qdm2_table[qdm2_vlc_offs[11]]; |
| 207 | vlc_tab_type34.table_allocated = qdm2_vlc_offs[12] - qdm2_vlc_offs[11]; |
| 208 | init_vlc(&vlc_tab_type34, 5, 10, |
| 209 | vlc_tab_type34_huffbits, 1, 1, |
| 210 | vlc_tab_type34_huffcodes, 1, 1, |
| 211 | INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
| 212 | |
| 213 | vlc_tab_fft_tone_offset[0].table = |
| 214 | &qdm2_table[qdm2_vlc_offs[12]]; |
| 215 | vlc_tab_fft_tone_offset[0].table_allocated = qdm2_vlc_offs[13] - |
| 216 | qdm2_vlc_offs[12]; |
| 217 | init_vlc(&vlc_tab_fft_tone_offset[0], 8, 23, |
| 218 | vlc_tab_fft_tone_offset_0_huffbits, 1, 1, |
| 219 | vlc_tab_fft_tone_offset_0_huffcodes, 2, 2, |
| 220 | INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
| 221 | |
| 222 | vlc_tab_fft_tone_offset[1].table = |
| 223 | &qdm2_table[qdm2_vlc_offs[13]]; |
| 224 | vlc_tab_fft_tone_offset[1].table_allocated = qdm2_vlc_offs[14] - |
| 225 | qdm2_vlc_offs[13]; |
| 226 | init_vlc(&vlc_tab_fft_tone_offset[1], 8, 28, |
| 227 | vlc_tab_fft_tone_offset_1_huffbits, 1, 1, |
| 228 | vlc_tab_fft_tone_offset_1_huffcodes, 2, 2, |
| 229 | INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
| 230 | |
| 231 | vlc_tab_fft_tone_offset[2].table = |
| 232 | &qdm2_table[qdm2_vlc_offs[14]]; |
| 233 | vlc_tab_fft_tone_offset[2].table_allocated = qdm2_vlc_offs[15] - |
| 234 | qdm2_vlc_offs[14]; |
| 235 | init_vlc(&vlc_tab_fft_tone_offset[2], 8, 32, |
| 236 | vlc_tab_fft_tone_offset_2_huffbits, 1, 1, |
| 237 | vlc_tab_fft_tone_offset_2_huffcodes, 2, 2, |
| 238 | INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
| 239 | |
| 240 | vlc_tab_fft_tone_offset[3].table = |
| 241 | &qdm2_table[qdm2_vlc_offs[15]]; |
| 242 | vlc_tab_fft_tone_offset[3].table_allocated = qdm2_vlc_offs[16] - |
| 243 | qdm2_vlc_offs[15]; |
| 244 | init_vlc(&vlc_tab_fft_tone_offset[3], 8, 35, |
| 245 | vlc_tab_fft_tone_offset_3_huffbits, 1, 1, |
| 246 | vlc_tab_fft_tone_offset_3_huffcodes, 2, 2, |
| 247 | INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
| 248 | |
| 249 | vlc_tab_fft_tone_offset[4].table = |
| 250 | &qdm2_table[qdm2_vlc_offs[16]]; |
| 251 | vlc_tab_fft_tone_offset[4].table_allocated = qdm2_vlc_offs[17] - |
| 252 | qdm2_vlc_offs[16]; |
| 253 | init_vlc(&vlc_tab_fft_tone_offset[4], 8, 38, |
| 254 | vlc_tab_fft_tone_offset_4_huffbits, 1, 1, |
| 255 | vlc_tab_fft_tone_offset_4_huffcodes, 2, 2, |
| 256 | INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
| 257 | } |
| 258 | |
| 259 | #endif /* CONFIG_HARDCODED_TABLES */ |
| 260 | |
| 261 | #endif /* AVCODEC_QDM2_TABLEGEN_H */ |
| 262 |