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261 lines
10 KiB
261 lines
10 KiB
/* |
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* Header file for hardcoded QDM2 tables |
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* |
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* Copyright (c) 2010 Reimar Döffinger <Reimar.Doeffinger@gmx.de> |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#ifndef AVCODEC_QDM2_TABLEGEN_H |
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#define AVCODEC_QDM2_TABLEGEN_H |
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#include <stdint.h> |
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#include <math.h> |
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#include "libavutil/attributes.h" |
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#include "qdm2data.h" |
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#define SOFTCLIP_THRESHOLD 27600 |
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#define HARDCLIP_THRESHOLD 35716 |
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#if CONFIG_HARDCODED_TABLES |
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#define softclip_table_init() |
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#define rnd_table_init() |
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#define init_noise_samples() |
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#define qdm2_init_vlc() |
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#include "libavcodec/qdm2_tables.h" |
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#else |
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static uint16_t softclip_table[HARDCLIP_THRESHOLD - SOFTCLIP_THRESHOLD + 1]; |
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static float noise_table[4096 + 20]; |
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static uint8_t random_dequant_index[256][5]; |
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static uint8_t random_dequant_type24[128][3]; |
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static float noise_samples[128]; |
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static av_cold void softclip_table_init(void) { |
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int i; |
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double dfl = SOFTCLIP_THRESHOLD - 32767; |
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float delta = 1.0 / -dfl; |
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for (i = 0; i < HARDCLIP_THRESHOLD - SOFTCLIP_THRESHOLD + 1; i++) |
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softclip_table[i] = SOFTCLIP_THRESHOLD - ((int)(sin((float)i * delta) * dfl) & 0x0000FFFF); |
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} |
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// random generated table |
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static av_cold void rnd_table_init(void) { |
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int i,j; |
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uint32_t ldw; |
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uint64_t random_seed = 0; |
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float delta = 1.0 / 16384.0; |
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for(i = 0; i < 4096 ;i++) { |
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random_seed = random_seed * 214013 + 2531011; |
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noise_table[i] = (delta * (float)(((int32_t)random_seed >> 16) & 0x00007FFF)- 1.0) * 1.3; |
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} |
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for (i = 0; i < 256 ;i++) { |
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random_seed = 81; |
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ldw = i; |
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for (j = 0; j < 5 ;j++) { |
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random_dequant_index[i][j] = ldw / random_seed; |
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ldw %= random_seed; |
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random_seed /= 3; |
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} |
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} |
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for (i = 0; i < 128 ;i++) { |
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random_seed = 25; |
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ldw = i; |
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for (j = 0; j < 3 ;j++) { |
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random_dequant_type24[i][j] = ldw / random_seed; |
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ldw %= random_seed; |
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random_seed /= 5; |
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} |
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} |
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} |
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static av_cold void init_noise_samples(void) { |
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int i; |
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unsigned random_seed = 0; |
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float delta = 1.0 / 16384.0; |
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for (i = 0; i < 128;i++) { |
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random_seed = random_seed * 214013 + 2531011; |
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noise_samples[i] = (delta * (float)((random_seed >> 16) & 0x00007fff) - 1.0); |
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} |
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} |
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static VLC vlc_tab_level; |
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static VLC vlc_tab_diff; |
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static VLC vlc_tab_run; |
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static VLC fft_level_exp_alt_vlc; |
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static VLC fft_level_exp_vlc; |
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static VLC fft_stereo_exp_vlc; |
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static VLC fft_stereo_phase_vlc; |
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static VLC vlc_tab_tone_level_idx_hi1; |
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static VLC vlc_tab_tone_level_idx_mid; |
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static VLC vlc_tab_tone_level_idx_hi2; |
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static VLC vlc_tab_type30; |
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static VLC vlc_tab_type34; |
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static VLC vlc_tab_fft_tone_offset[5]; |
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static const uint16_t qdm2_vlc_offs[] = { |
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0,260,566,598,894,1166,1230,1294,1678,1950,2214,2278,2310,2570,2834,3124,3448,3838, |
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}; |
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static VLC_TYPE qdm2_table[3838][2]; |
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static av_cold void qdm2_init_vlc(void) |
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{ |
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vlc_tab_level.table = &qdm2_table[qdm2_vlc_offs[0]]; |
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vlc_tab_level.table_allocated = qdm2_vlc_offs[1] - qdm2_vlc_offs[0]; |
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init_vlc(&vlc_tab_level, 8, 24, |
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vlc_tab_level_huffbits, 1, 1, |
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vlc_tab_level_huffcodes, 2, 2, |
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INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
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vlc_tab_diff.table = &qdm2_table[qdm2_vlc_offs[1]]; |
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vlc_tab_diff.table_allocated = qdm2_vlc_offs[2] - qdm2_vlc_offs[1]; |
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init_vlc(&vlc_tab_diff, 8, 37, |
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vlc_tab_diff_huffbits, 1, 1, |
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vlc_tab_diff_huffcodes, 2, 2, |
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INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
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vlc_tab_run.table = &qdm2_table[qdm2_vlc_offs[2]]; |
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vlc_tab_run.table_allocated = qdm2_vlc_offs[3] - qdm2_vlc_offs[2]; |
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init_vlc(&vlc_tab_run, 5, 6, |
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vlc_tab_run_huffbits, 1, 1, |
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vlc_tab_run_huffcodes, 1, 1, |
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INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
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fft_level_exp_alt_vlc.table = &qdm2_table[qdm2_vlc_offs[3]]; |
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fft_level_exp_alt_vlc.table_allocated = qdm2_vlc_offs[4] - |
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qdm2_vlc_offs[3]; |
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init_vlc(&fft_level_exp_alt_vlc, 8, 28, |
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fft_level_exp_alt_huffbits, 1, 1, |
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fft_level_exp_alt_huffcodes, 2, 2, |
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INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
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fft_level_exp_vlc.table = &qdm2_table[qdm2_vlc_offs[4]]; |
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fft_level_exp_vlc.table_allocated = qdm2_vlc_offs[5] - qdm2_vlc_offs[4]; |
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init_vlc(&fft_level_exp_vlc, 8, 20, |
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fft_level_exp_huffbits, 1, 1, |
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fft_level_exp_huffcodes, 2, 2, |
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INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
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fft_stereo_exp_vlc.table = &qdm2_table[qdm2_vlc_offs[5]]; |
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fft_stereo_exp_vlc.table_allocated = qdm2_vlc_offs[6] - |
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qdm2_vlc_offs[5]; |
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init_vlc(&fft_stereo_exp_vlc, 6, 7, |
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fft_stereo_exp_huffbits, 1, 1, |
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fft_stereo_exp_huffcodes, 1, 1, |
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INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
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fft_stereo_phase_vlc.table = &qdm2_table[qdm2_vlc_offs[6]]; |
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fft_stereo_phase_vlc.table_allocated = qdm2_vlc_offs[7] - |
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qdm2_vlc_offs[6]; |
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init_vlc(&fft_stereo_phase_vlc, 6, 9, |
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fft_stereo_phase_huffbits, 1, 1, |
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fft_stereo_phase_huffcodes, 1, 1, |
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INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
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vlc_tab_tone_level_idx_hi1.table = |
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&qdm2_table[qdm2_vlc_offs[7]]; |
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vlc_tab_tone_level_idx_hi1.table_allocated = qdm2_vlc_offs[8] - |
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qdm2_vlc_offs[7]; |
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init_vlc(&vlc_tab_tone_level_idx_hi1, 8, 20, |
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vlc_tab_tone_level_idx_hi1_huffbits, 1, 1, |
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vlc_tab_tone_level_idx_hi1_huffcodes, 2, 2, |
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INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
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vlc_tab_tone_level_idx_mid.table = |
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&qdm2_table[qdm2_vlc_offs[8]]; |
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vlc_tab_tone_level_idx_mid.table_allocated = qdm2_vlc_offs[9] - |
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qdm2_vlc_offs[8]; |
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init_vlc(&vlc_tab_tone_level_idx_mid, 8, 24, |
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vlc_tab_tone_level_idx_mid_huffbits, 1, 1, |
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vlc_tab_tone_level_idx_mid_huffcodes, 2, 2, |
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INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
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vlc_tab_tone_level_idx_hi2.table = |
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&qdm2_table[qdm2_vlc_offs[9]]; |
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vlc_tab_tone_level_idx_hi2.table_allocated = qdm2_vlc_offs[10] - |
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qdm2_vlc_offs[9]; |
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init_vlc(&vlc_tab_tone_level_idx_hi2, 8, 24, |
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vlc_tab_tone_level_idx_hi2_huffbits, 1, 1, |
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vlc_tab_tone_level_idx_hi2_huffcodes, 2, 2, |
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INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
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vlc_tab_type30.table = &qdm2_table[qdm2_vlc_offs[10]]; |
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vlc_tab_type30.table_allocated = qdm2_vlc_offs[11] - qdm2_vlc_offs[10]; |
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init_vlc(&vlc_tab_type30, 6, 9, |
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vlc_tab_type30_huffbits, 1, 1, |
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vlc_tab_type30_huffcodes, 1, 1, |
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INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
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vlc_tab_type34.table = &qdm2_table[qdm2_vlc_offs[11]]; |
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vlc_tab_type34.table_allocated = qdm2_vlc_offs[12] - qdm2_vlc_offs[11]; |
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init_vlc(&vlc_tab_type34, 5, 10, |
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vlc_tab_type34_huffbits, 1, 1, |
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vlc_tab_type34_huffcodes, 1, 1, |
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INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
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vlc_tab_fft_tone_offset[0].table = |
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&qdm2_table[qdm2_vlc_offs[12]]; |
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vlc_tab_fft_tone_offset[0].table_allocated = qdm2_vlc_offs[13] - |
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qdm2_vlc_offs[12]; |
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init_vlc(&vlc_tab_fft_tone_offset[0], 8, 23, |
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vlc_tab_fft_tone_offset_0_huffbits, 1, 1, |
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vlc_tab_fft_tone_offset_0_huffcodes, 2, 2, |
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INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
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vlc_tab_fft_tone_offset[1].table = |
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&qdm2_table[qdm2_vlc_offs[13]]; |
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vlc_tab_fft_tone_offset[1].table_allocated = qdm2_vlc_offs[14] - |
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qdm2_vlc_offs[13]; |
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init_vlc(&vlc_tab_fft_tone_offset[1], 8, 28, |
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vlc_tab_fft_tone_offset_1_huffbits, 1, 1, |
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vlc_tab_fft_tone_offset_1_huffcodes, 2, 2, |
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INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
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vlc_tab_fft_tone_offset[2].table = |
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&qdm2_table[qdm2_vlc_offs[14]]; |
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vlc_tab_fft_tone_offset[2].table_allocated = qdm2_vlc_offs[15] - |
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qdm2_vlc_offs[14]; |
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init_vlc(&vlc_tab_fft_tone_offset[2], 8, 32, |
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vlc_tab_fft_tone_offset_2_huffbits, 1, 1, |
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vlc_tab_fft_tone_offset_2_huffcodes, 2, 2, |
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INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
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vlc_tab_fft_tone_offset[3].table = |
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&qdm2_table[qdm2_vlc_offs[15]]; |
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vlc_tab_fft_tone_offset[3].table_allocated = qdm2_vlc_offs[16] - |
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qdm2_vlc_offs[15]; |
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init_vlc(&vlc_tab_fft_tone_offset[3], 8, 35, |
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vlc_tab_fft_tone_offset_3_huffbits, 1, 1, |
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vlc_tab_fft_tone_offset_3_huffcodes, 2, 2, |
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INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
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vlc_tab_fft_tone_offset[4].table = |
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&qdm2_table[qdm2_vlc_offs[16]]; |
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vlc_tab_fft_tone_offset[4].table_allocated = qdm2_vlc_offs[17] - |
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qdm2_vlc_offs[16]; |
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init_vlc(&vlc_tab_fft_tone_offset[4], 8, 38, |
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vlc_tab_fft_tone_offset_4_huffbits, 1, 1, |
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vlc_tab_fft_tone_offset_4_huffcodes, 2, 2, |
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INIT_VLC_USE_NEW_STATIC | INIT_VLC_LE); |
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} |
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#endif /* CONFIG_HARDCODED_TABLES */ |
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#endif /* AVCODEC_QDM2_TABLEGEN_H */
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