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130 lines
6.6 KiB
C
130 lines
6.6 KiB
C
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/*
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* Header file for hardcoded AAC SBR windows
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*
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* Copyright (c) 2014 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_AACSBR_TABLEGEN_H
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#define AVCODEC_AACSBR_TABLEGEN_H
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#if CONFIG_HARDCODED_TABLES
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#define aacsbr_tableinit()
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#include "libavcodec/aacsbr_tables.h"
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#else
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///< window coefficients for analysis/synthesis QMF banks
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static DECLARE_ALIGNED(32, float, sbr_qmf_window_ds)[320];
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static DECLARE_ALIGNED(32, float, sbr_qmf_window_us)[640] = {
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0.0000000000, -0.0005525286, -0.0005617692, -0.0004947518,
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-0.0004875227, -0.0004893791, -0.0005040714, -0.0005226564,
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-0.0005466565, -0.0005677802, -0.0005870930, -0.0006132747,
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-0.0006312493, -0.0006540333, -0.0006777690, -0.0006941614,
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-0.0007157736, -0.0007255043, -0.0007440941, -0.0007490598,
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-0.0007681371, -0.0007724848, -0.0007834332, -0.0007779869,
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-0.0007803664, -0.0007801449, -0.0007757977, -0.0007630793,
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-0.0007530001, -0.0007319357, -0.0007215391, -0.0006917937,
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-0.0006650415, -0.0006341594, -0.0005946118, -0.0005564576,
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-0.0005145572, -0.0004606325, -0.0004095121, -0.0003501175,
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-0.0002896981, -0.0002098337, -0.0001446380, -0.0000617334,
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0.0000134949, 0.0001094383, 0.0002043017, 0.0002949531,
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0.0004026540, 0.0005107388, 0.0006239376, 0.0007458025,
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0.0008608443, 0.0009885988, 0.0011250155, 0.0012577884,
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0.0013902494, 0.0015443219, 0.0016868083, 0.0018348265,
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0.0019841140, 0.0021461583, 0.0023017254, 0.0024625616,
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0.0026201758, 0.0027870464, 0.0029469447, 0.0031125420,
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0.0032739613, 0.0034418874, 0.0036008268, 0.0037603922,
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0.0039207432, 0.0040819753, 0.0042264269, 0.0043730719,
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0.0045209852, 0.0046606460, 0.0047932560, 0.0049137603,
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0.0050393022, 0.0051407353, 0.0052461166, 0.0053471681,
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0.0054196775, 0.0054876040, 0.0055475714, 0.0055938023,
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0.0056220643, 0.0056455196, 0.0056389199, 0.0056266114,
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0.0055917128, 0.0055404363, 0.0054753783, 0.0053838975,
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0.0052715758, 0.0051382275, 0.0049839687, 0.0048109469,
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0.0046039530, 0.0043801861, 0.0041251642, 0.0038456408,
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0.0035401246, 0.0032091885, 0.0028446757, 0.0024508540,
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0.0020274176, 0.0015784682, 0.0010902329, 0.0005832264,
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0.0000276045, -0.0005464280, -0.0011568135, -0.0018039472,
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-0.0024826723, -0.0031933778, -0.0039401124, -0.0047222596,
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-0.0055337211, -0.0063792293, -0.0072615816, -0.0081798233,
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-0.0091325329, -0.0101150215, -0.0111315548, -0.0121849995,
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0.0132718220, 0.0143904666, 0.0155405553, 0.0167324712,
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0.0179433381, 0.0191872431, 0.0204531793, 0.0217467550,
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0.0230680169, 0.0244160992, 0.0257875847, 0.0271859429,
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0.0286072173, 0.0300502657, 0.0315017608, 0.0329754081,
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0.0344620948, 0.0359697560, 0.0374812850, 0.0390053679,
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0.0405349170, 0.0420649094, 0.0436097542, 0.0451488405,
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0.0466843027, 0.0482165720, 0.0497385755, 0.0512556155,
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0.0527630746, 0.0542452768, 0.0557173648, 0.0571616450,
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0.0585915683, 0.0599837480, 0.0613455171, 0.0626857808,
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0.0639715898, 0.0652247106, 0.0664367512, 0.0676075985,
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0.0687043828, 0.0697630244, 0.0707628710, 0.0717002673,
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0.0725682583, 0.0733620255, 0.0741003642, 0.0747452558,
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0.0753137336, 0.0758008358, 0.0761992479, 0.0764992170,
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0.0767093490, 0.0768173975, 0.0768230011, 0.0767204924,
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0.0765050718, 0.0761748321, 0.0757305756, 0.0751576255,
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0.0744664394, 0.0736406005, 0.0726774642, 0.0715826364,
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0.0703533073, 0.0689664013, 0.0674525021, 0.0657690668,
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0.0639444805, 0.0619602779, 0.0598166570, 0.0575152691,
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0.0550460034, 0.0524093821, 0.0495978676, 0.0466303305,
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0.0434768782, 0.0401458278, 0.0366418116, 0.0329583930,
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0.0290824006, 0.0250307561, 0.0207997072, 0.0163701258,
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0.0117623832, 0.0069636862, 0.0019765601, -0.0032086896,
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-0.0085711749, -0.0141288827, -0.0198834129, -0.0258227288,
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-0.0319531274, -0.0382776572, -0.0447806821, -0.0514804176,
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-0.0583705326, -0.0654409853, -0.0726943300, -0.0801372934,
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-0.0877547536, -0.0955533352, -0.1035329531, -0.1116826931,
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-0.1200077984, -0.1285002850, -0.1371551761, -0.1459766491,
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-0.1549607071, -0.1640958855, -0.1733808172, -0.1828172548,
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-0.1923966745, -0.2021250176, -0.2119735853, -0.2219652696,
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-0.2320690870, -0.2423016884, -0.2526480309, -0.2631053299,
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-0.2736634040, -0.2843214189, -0.2950716717, -0.3059098575,
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-0.3168278913, -0.3278113727, -0.3388722693, -0.3499914122,
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0.3611589903, 0.3723795546, 0.3836350013, 0.3949211761,
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0.4062317676, 0.4175696896, 0.4289119920, 0.4402553754,
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0.4515996535, 0.4629308085, 0.4742453214, 0.4855253091,
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0.4967708254, 0.5079817500, 0.5191234970, 0.5302240895,
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0.5412553448, 0.5522051258, 0.5630789140, 0.5738524131,
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0.5845403235, 0.5951123086, 0.6055783538, 0.6159109932,
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0.6261242695, 0.6361980107, 0.6461269695, 0.6559016302,
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0.6655139880, 0.6749663190, 0.6842353293, 0.6933282376,
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0.7022388719, 0.7109410426, 0.7194462634, 0.7277448900,
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0.7358211758, 0.7436827863, 0.7513137456, 0.7587080760,
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0.7658674865, 0.7727780881, 0.7794287519, 0.7858353120,
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0.7919735841, 0.7978466413, 0.8034485751, 0.8087695004,
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0.8138191270, 0.8185776004, 0.8230419890, 0.8272275347,
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0.8311038457, 0.8346937361, 0.8379717337, 0.8409541392,
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0.8436238281, 0.8459818469, 0.8480315777, 0.8497805198,
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0.8511971524, 0.8523047035, 0.8531020949, 0.8535720573,
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0.8537385600,
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};
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static av_cold void aacsbr_tableinit(void)
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{
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int n;
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for (n = 1; n < 320; n++)
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sbr_qmf_window_us[320 + n] = sbr_qmf_window_us[320 - n];
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sbr_qmf_window_us[384] = -sbr_qmf_window_us[384];
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sbr_qmf_window_us[512] = -sbr_qmf_window_us[512];
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for (n = 0; n < 320; n++)
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sbr_qmf_window_ds[n] = sbr_qmf_window_us[2*n];
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}
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#endif /* CONFIG_HARDCODED_TABLES */
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#endif /* AVCODEC_AACSBR_TABLEGEN_H */
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