1 /* ----------------------------------------------------------------------------- 2 Software License for The Fraunhofer FDK AAC Codec Library for Android 3 4 Copyright 1995 - 2018 Fraunhofer-Gesellschaft zur Frderung der angewandten 5 Forschung e.V. All rights reserved. 6 7 1. INTRODUCTION 8 The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software 9 that implements the MPEG Advanced Audio Coding ("AAC") encoding and decoding 10 scheme for digital audio. This FDK AAC Codec software is intended to be used on 11 a wide variety of Android devices. 12 13 AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient 14 general perceptual audio codecs. AAC-ELD is considered the best-performing 15 full-bandwidth communications codec by independent studies and is widely 16 deployed. AAC has been standardized by ISO and IEC as part of the MPEG 17 specifications. 18 19 Patent licenses for necessary patent claims for the FDK AAC Codec (including 20 those of Fraunhofer) may be obtained through Via Licensing 21 (www.vialicensing.com) or through the respective patent owners individually for 22 the purpose of encoding or decoding bit streams in products that are compliant 23 with the ISO/IEC MPEG audio standards. Please note that most manufacturers of 24 Android devices already license these patent claims through Via Licensing or 25 directly from the patent owners, and therefore FDK AAC Codec software may 26 already be covered under those patent licenses when it is used for those 27 licensed purposes only. 28 29 Commercially-licensed AAC software libraries, including floating-point versions 30 with enhanced sound quality, are also available from Fraunhofer. Users are 31 encouraged to check the Fraunhofer website for additional applications 32 information and documentation. 33 34 2. COPYRIGHT LICENSE 35 36 Redistribution and use in source and binary forms, with or without modification, 37 are permitted without payment of copyright license fees provided that you 38 satisfy the following conditions: 39 40 You must retain the complete text of this software license in redistributions of 41 the FDK AAC Codec or your modifications thereto in source code form. 42 43 You must retain the complete text of this software license in the documentation 44 and/or other materials provided with redistributions of the FDK AAC Codec or 45 your modifications thereto in binary form. You must make available free of 46 charge copies of the complete source code of the FDK AAC Codec and your 47 modifications thereto to recipients of copies in binary form. 48 49 The name of Fraunhofer may not be used to endorse or promote products derived 50 from this library without prior written permission. 51 52 You may not charge copyright license fees for anyone to use, copy or distribute 53 the FDK AAC Codec software or your modifications thereto. 54 55 Your modified versions of the FDK AAC Codec must carry prominent notices stating 56 that you changed the software and the date of any change. For modified versions 57 of the FDK AAC Codec, the term "Fraunhofer FDK AAC Codec Library for Android" 58 must be replaced by the term "Third-Party Modified Version of the Fraunhofer FDK 59 AAC Codec Library for Android." 60 61 3. NO PATENT LICENSE 62 63 NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without 64 limitation the patents of Fraunhofer, ARE GRANTED BY THIS SOFTWARE LICENSE. 65 Fraunhofer provides no warranty of patent non-infringement with respect to this 66 software. 67 68 You may use this FDK AAC Codec software or modifications thereto only for 69 purposes that are authorized by appropriate patent licenses. 70 71 4. DISCLAIMER 72 73 This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright 74 holders and contributors "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, 75 including but not limited to the implied warranties of merchantability and 76 fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 77 CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, 78 or consequential damages, including but not limited to procurement of substitute 79 goods or services; loss of use, data, or profits, or business interruption, 80 however caused and on any theory of liability, whether in contract, strict 81 liability, or tort (including negligence), arising in any way out of the use of 82 this software, even if advised of the possibility of such damage. 83 84 5. CONTACT INFORMATION 85 86 Fraunhofer Institute for Integrated Circuits IIS 87 Attention: Audio and Multimedia Departments - FDK AAC LL 88 Am Wolfsmantel 33 89 91058 Erlangen, Germany 90 91 www.iis.fraunhofer.de/amm 92 amm-info (at) iis.fraunhofer.de 93 ----------------------------------------------------------------------------- */ 94 95 /**************************** SBR decoder library ****************************** 96 97 Author(s): 98 99 Description: 100 101 *******************************************************************************/ 102 103 /*! 104 \file 105 \brief Declaration of constant tables 106 */ 107 #ifndef SBR_ROM_H 108 #define SBR_ROM_H 109 110 #include "sbrdecoder.h" 111 #include "env_extr.h" 112 #include "qmf.h" 113 114 #define INV_INT_TABLE_SIZE 49 115 #define SBR_NF_NO_RANDOM_VAL \ 116 512 /*!< Size of random number array for noise floor */ 117 118 /* 119 Frequency scales 120 */ 121 122 /* if defined(SBRDEC_RATIO_16_64_ENABLE) ((4) = 4) else ((4) = 2) */ 123 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_16[(4) / 2][16]; 124 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_22[(4) / 2][16]; 125 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_24[(4) / 2][16]; 126 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_32[(4) / 2][16]; 127 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_40[(4) / 2][16]; 128 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_44[(4) / 2][16]; 129 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_48[(4) / 2][16]; 130 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_64[(4) / 2][16]; 131 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_88[(4) / 2][16]; 132 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_192[16]; 133 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_176[16]; 134 extern const UCHAR FDK_sbrDecoder_sbr_start_freq_128[16]; 135 136 /* 137 Low-Power-Profile Transposer 138 */ 139 #define NUM_WHFACTOR_TABLE_ENTRIES 9 140 extern const USHORT 141 FDK_sbrDecoder_sbr_whFactorsIndex[NUM_WHFACTOR_TABLE_ENTRIES]; 142 extern const FIXP_DBL 143 FDK_sbrDecoder_sbr_whFactorsTable[NUM_WHFACTOR_TABLE_ENTRIES][6]; 144 145 /* 146 Envelope Adjustor 147 */ 148 extern const FIXP_SGL FDK_sbrDecoder_sbr_limGains_m[4]; 149 extern const UCHAR FDK_sbrDecoder_sbr_limGains_e[4]; 150 extern const FIXP_SGL FDK_sbrDecoder_sbr_limGainsPvc_m[4]; 151 extern const UCHAR FDK_sbrDecoder_sbr_limGainsPvc_e[4]; 152 extern const FIXP_SGL FDK_sbrDecoder_sbr_limiterBandsPerOctaveDiv4[4]; 153 extern const FIXP_DBL FDK_sbrDecoder_sbr_limiterBandsPerOctaveDiv4_DBL[4]; 154 extern const FIXP_SGL FDK_sbrDecoder_sbr_smoothFilter[4]; 155 extern const FIXP_SGL FDK_sbrDecoder_sbr_randomPhase[SBR_NF_NO_RANDOM_VAL][2]; 156 157 /* 158 Envelope Extractor 159 */ 160 extern const int FDK_sbrDecoder_envelopeTable_8[8][5]; 161 extern const int FDK_sbrDecoder_envelopeTable_15[15][6]; 162 extern const int FDK_sbrDecoder_envelopeTable_16[16][6]; 163 extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info1_15; 164 extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info2_15; 165 extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info4_15; 166 extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info8_15; 167 extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info1_16; 168 extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info2_16; 169 extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info4_16; 170 extern const FRAME_INFO FDK_sbrDecoder_sbr_frame_info8_16; 171 172 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel10T[120][2]; 173 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel10F[120][2]; 174 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance10T[48][2]; 175 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance10F[48][2]; 176 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel11T[62][2]; 177 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvLevel11F[62][2]; 178 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance11T[24][2]; 179 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_EnvBalance11F[24][2]; 180 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_NoiseLevel11T[62][2]; 181 extern const SCHAR FDK_sbrDecoder_sbr_huffBook_NoiseBalance11T[24][2]; 182 183 /* 184 Parametric stereo 185 */ 186 187 /* FIX_BORDER can have 0, 1, 2, 4 envelops */ 188 extern const UCHAR FDK_sbrDecoder_aFixNoEnvDecode[4]; 189 190 /* IID & ICC Huffman codebooks */ 191 extern const SCHAR aBookPsIidTimeDecode[28][2]; 192 extern const SCHAR aBookPsIidFreqDecode[28][2]; 193 extern const SCHAR aBookPsIccTimeDecode[14][2]; 194 extern const SCHAR aBookPsIccFreqDecode[14][2]; 195 196 /* IID-fine Huffman codebooks */ 197 198 extern const SCHAR aBookPsIidFineTimeDecode[60][2]; 199 extern const SCHAR aBookPsIidFineFreqDecode[60][2]; 200 201 /* the values of the following 3 tables are shiftet right by 1 ! */ 202 extern const FIXP_DBL ScaleFactors[NO_IID_LEVELS]; 203 extern const FIXP_DBL ScaleFactorsFine[NO_IID_LEVELS_FINE]; 204 extern const FIXP_DBL Alphas[NO_ICC_LEVELS]; 205 206 extern const UCHAR bins2groupMap20[NO_IID_GROUPS]; 207 extern const UCHAR FDK_sbrDecoder_aNoIidBins[3]; 208 extern const UCHAR FDK_sbrDecoder_aNoIccBins[3]; 209 210 /* Lookup tables for some arithmetic functions */ 211 212 #define INV_TABLE_BITS 8 213 #define INV_TABLE_SIZE (1 << INV_TABLE_BITS) 214 extern const FIXP_SGL FDK_sbrDecoder_invTable[INV_TABLE_SIZE]; 215 216 #endif // SBR_ROM_H 217
