/*
  * 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 */