262 lines
10 KiB
C
262 lines
10 KiB
C
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/*
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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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