ffmpeg/libavcodec/aacsbr_tablegen.h

   1 /*
   2  * Header file for hardcoded AAC SBR windows
   3  *
   4  * Copyright (c) 2014 Reimar Döffinger <Reimar.Doeffinger@gmx.de>
   5  *
   6  * This file is part of FFmpeg.
   7  *
   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.
  12  *
  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.
  17  *
  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
  21  */
  22
  23 #ifndef AVCODEC_AACSBR_TABLEGEN_H
  24 #define AVCODEC_AACSBR_TABLEGEN_H
  25
  26 #if CONFIG_HARDCODED_TABLES
  27 #define aacsbr_tableinit()
  28 #include "libavcodec/aacsbr_tables.h"
  29 #else
  30 ///< window coefficients for analysis/synthesis QMF banks
  31 static DECLARE_ALIGNED(32, float, sbr_qmf_window_ds)[320];
  32 static DECLARE_ALIGNED(32, float, sbr_qmf_window_us)[640] = {
  33      0.0000000000, -0.0005525286, -0.0005617692, -0.0004947518,
  34     -0.0004875227, -0.0004893791, -0.0005040714, -0.0005226564,
  35     -0.0005466565, -0.0005677802, -0.0005870930, -0.0006132747,
  36     -0.0006312493, -0.0006540333, -0.0006777690, -0.0006941614,
  37     -0.0007157736, -0.0007255043, -0.0007440941, -0.0007490598,
  38     -0.0007681371, -0.0007724848, -0.0007834332, -0.0007779869,
  39     -0.0007803664, -0.0007801449, -0.0007757977, -0.0007630793,
  40     -0.0007530001, -0.0007319357, -0.0007215391, -0.0006917937,
  41     -0.0006650415, -0.0006341594, -0.0005946118, -0.0005564576,
  42     -0.0005145572, -0.0004606325, -0.0004095121, -0.0003501175,
  43     -0.0002896981, -0.0002098337, -0.0001446380, -0.0000617334,
  44      0.0000134949,  0.0001094383,  0.0002043017,  0.0002949531,
  45      0.0004026540,  0.0005107388,  0.0006239376,  0.0007458025,
  46      0.0008608443,  0.0009885988,  0.0011250155,  0.0012577884,
  47      0.0013902494,  0.0015443219,  0.0016868083,  0.0018348265,
  48      0.0019841140,  0.0021461583,  0.0023017254,  0.0024625616,
  49      0.0026201758,  0.0027870464,  0.0029469447,  0.0031125420,
  50      0.0032739613,  0.0034418874,  0.0036008268,  0.0037603922,
  51      0.0039207432,  0.0040819753,  0.0042264269,  0.0043730719,
  52      0.0045209852,  0.0046606460,  0.0047932560,  0.0049137603,
  53      0.0050393022,  0.0051407353,  0.0052461166,  0.0053471681,
  54      0.0054196775,  0.0054876040,  0.0055475714,  0.0055938023,
  55      0.0056220643,  0.0056455196,  0.0056389199,  0.0056266114,
  56      0.0055917128,  0.0055404363,  0.0054753783,  0.0053838975,
  57      0.0052715758,  0.0051382275,  0.0049839687,  0.0048109469,
  58      0.0046039530,  0.0043801861,  0.0041251642,  0.0038456408,
  59      0.0035401246,  0.0032091885,  0.0028446757,  0.0024508540,
  60      0.0020274176,  0.0015784682,  0.0010902329,  0.0005832264,
  61      0.0000276045, -0.0005464280, -0.0011568135, -0.0018039472,
  62     -0.0024826723, -0.0031933778, -0.0039401124, -0.0047222596,
  63     -0.0055337211, -0.0063792293, -0.0072615816, -0.0081798233,
  64     -0.0091325329, -0.0101150215, -0.0111315548, -0.0121849995,
  65      0.0132718220,  0.0143904666,  0.0155405553,  0.0167324712,
  66      0.0179433381,  0.0191872431,  0.0204531793,  0.0217467550,
  67      0.0230680169,  0.0244160992,  0.0257875847,  0.0271859429,
  68      0.0286072173,  0.0300502657,  0.0315017608,  0.0329754081,
  69      0.0344620948,  0.0359697560,  0.0374812850,  0.0390053679,
  70      0.0405349170,  0.0420649094,  0.0436097542,  0.0451488405,
  71      0.0466843027,  0.0482165720,  0.0497385755,  0.0512556155,
  72      0.0527630746,  0.0542452768,  0.0557173648,  0.0571616450,
  73      0.0585915683,  0.0599837480,  0.0613455171,  0.0626857808,
  74      0.0639715898,  0.0652247106,  0.0664367512,  0.0676075985,
  75      0.0687043828,  0.0697630244,  0.0707628710,  0.0717002673,
  76      0.0725682583,  0.0733620255,  0.0741003642,  0.0747452558,
  77      0.0753137336,  0.0758008358,  0.0761992479,  0.0764992170,
  78      0.0767093490,  0.0768173975,  0.0768230011,  0.0767204924,
  79      0.0765050718,  0.0761748321,  0.0757305756,  0.0751576255,
  80      0.0744664394,  0.0736406005,  0.0726774642,  0.0715826364,
  81      0.0703533073,  0.0689664013,  0.0674525021,  0.0657690668,
  82      0.0639444805,  0.0619602779,  0.0598166570,  0.0575152691,
  83      0.0550460034,  0.0524093821,  0.0495978676,  0.0466303305,
  84      0.0434768782,  0.0401458278,  0.0366418116,  0.0329583930,
  85      0.0290824006,  0.0250307561,  0.0207997072,  0.0163701258,
  86      0.0117623832,  0.0069636862,  0.0019765601, -0.0032086896,
  87     -0.0085711749, -0.0141288827, -0.0198834129, -0.0258227288,
  88     -0.0319531274, -0.0382776572, -0.0447806821, -0.0514804176,
  89     -0.0583705326, -0.0654409853, -0.0726943300, -0.0801372934,
  90     -0.0877547536, -0.0955533352, -0.1035329531, -0.1116826931,
  91     -0.1200077984, -0.1285002850, -0.1371551761, -0.1459766491,
  92     -0.1549607071, -0.1640958855, -0.1733808172, -0.1828172548,
  93     -0.1923966745, -0.2021250176, -0.2119735853, -0.2219652696,
  94     -0.2320690870, -0.2423016884, -0.2526480309, -0.2631053299,
  95     -0.2736634040, -0.2843214189, -0.2950716717, -0.3059098575,
  96     -0.3168278913, -0.3278113727, -0.3388722693, -0.3499914122,
  97      0.3611589903,  0.3723795546,  0.3836350013,  0.3949211761,
  98      0.4062317676,  0.4175696896,  0.4289119920,  0.4402553754,
  99      0.4515996535,  0.4629308085,  0.4742453214,  0.4855253091,
 100      0.4967708254,  0.5079817500,  0.5191234970,  0.5302240895,
 101      0.5412553448,  0.5522051258,  0.5630789140,  0.5738524131,
 102      0.5845403235,  0.5951123086,  0.6055783538,  0.6159109932,
 103      0.6261242695,  0.6361980107,  0.6461269695,  0.6559016302,
 104      0.6655139880,  0.6749663190,  0.6842353293,  0.6933282376,
 105      0.7022388719,  0.7109410426,  0.7194462634,  0.7277448900,
 106      0.7358211758,  0.7436827863,  0.7513137456,  0.7587080760,
 107      0.7658674865,  0.7727780881,  0.7794287519,  0.7858353120,
 108      0.7919735841,  0.7978466413,  0.8034485751,  0.8087695004,
 109      0.8138191270,  0.8185776004,  0.8230419890,  0.8272275347,
 110      0.8311038457,  0.8346937361,  0.8379717337,  0.8409541392,
 111      0.8436238281,  0.8459818469,  0.8480315777,  0.8497805198,
 112      0.8511971524,  0.8523047035,  0.8531020949,  0.8535720573,
 113      0.8537385600,
 114 };
 115
 116 static av_cold void aacsbr_tableinit(void)
 117 {
 118     int n;
 119     for (n = 1; n < 320; n++)
 120         sbr_qmf_window_us[320 + n] = sbr_qmf_window_us[320 - n];
 121     sbr_qmf_window_us[384] = -sbr_qmf_window_us[384];
 122     sbr_qmf_window_us[512] = -sbr_qmf_window_us[512];
 123
 124     for (n = 0; n < 320; n++)
 125         sbr_qmf_window_ds[n] = sbr_qmf_window_us[2*n];
 126 }
 127 #endif /* CONFIG_HARDCODED_TABLES */
 128
 129 #endif /* AVCODEC_AACSBR_TABLEGEN_H */