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pineapple-src/externals/ffmpeg/libavcodec/qdm2_tablegen.h
pineappleEA 3d5a9d908a early-access version 1432
2021-02-09 04:25:58 +01:00

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