2 * Header file for hardcoded QDM2 tables
4 * Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
6 * This file is part of FFmpeg.
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.
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.
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
23 #ifndef AVCODEC_QDM2_TABLEGEN_H
24 #define AVCODEC_QDM2_TABLEGEN_H
28 #include "libavutil/attributes.h"
31 #define SOFTCLIP_THRESHOLD 27600
32 #define HARDCLIP_THRESHOLD 35716
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"
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];
47 static av_cold void softclip_table_init(void) {
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);
56 // random generated table
57 static av_cold void rnd_table_init(void) {
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;
67 for (i = 0; i < 256 ;i++) {
70 for (j = 0; j < 5 ;j++) {
71 random_dequant_index[i][j] = ldw / random_seed;
76 for (i = 0; i < 128 ;i++) {
79 for (j = 0; j < 3 ;j++) {
80 random_dequant_type24[i][j] = ldw / random_seed;
88 static av_cold void init_noise_samples(void) {
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);
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];
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,
116 static VLC_TYPE qdm2_table[3838][2];
118 static av_cold void qdm2_init_vlc(void)
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);
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);
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);
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] -
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);
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);
156 fft_stereo_exp_vlc.table = &qdm2_table[qdm2_vlc_offs[5]];
157 fft_stereo_exp_vlc.table_allocated = qdm2_vlc_offs[6] -
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);
164 fft_stereo_phase_vlc.table = &qdm2_table[qdm2_vlc_offs[6]];
165 fft_stereo_phase_vlc.table_allocated = qdm2_vlc_offs[7] -
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);
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] -
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);
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] -
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);
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] -
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);
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);
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);
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] -
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);
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] -
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);
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] -
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);
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] -
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);
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] -
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);
259 #endif /* CONFIG_HARDCODED_TABLES */
261 #endif /* AVCODEC_QDM2_TABLEGEN_H */