1 2 /* ----------------------------------------------------------------------------------------------------------- 3 Software License for The Fraunhofer FDK AAC Codec Library for Android 4 5 Copyright 1995 - 2012 Fraunhofer-Gesellschaft zur Frderung der angewandten Forschung e.V. 6 All rights reserved. 7 8 1. INTRODUCTION 9 The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements 10 the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. 11 This FDK AAC Codec software is intended to be used on a wide variety of Android devices. 12 13 AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual 14 audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by 15 independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part 16 of the MPEG specifications. 17 18 Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) 19 may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners 20 individually for the purpose of encoding or decoding bit streams in products that are compliant with 21 the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license 22 these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec 23 software may already be covered under those patent licenses when it is used for those licensed purposes only. 24 25 Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, 26 are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional 27 applications information and documentation. 28 29 2. COPYRIGHT LICENSE 30 31 Redistribution and use in source and binary forms, with or without modification, are permitted without 32 payment of copyright license fees provided that you satisfy the following conditions: 33 34 You must retain the complete text of this software license in redistributions of the FDK AAC Codec or 35 your modifications thereto in source code form. 36 37 You must retain the complete text of this software license in the documentation and/or other materials 38 provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. 39 You must make available free of charge copies of the complete source code of the FDK AAC Codec and your 40 modifications thereto to recipients of copies in binary form. 41 42 The name of Fraunhofer may not be used to endorse or promote products derived from this library without 43 prior written permission. 44 45 You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec 46 software or your modifications thereto. 47 48 Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software 49 and the date of any change. For modified versions of the FDK AAC Codec, the term 50 "Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term 51 "Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android." 52 53 3. NO PATENT LICENSE 54 55 NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, 56 ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with 57 respect to this software. 58 59 You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized 60 by appropriate patent licenses. 61 62 4. DISCLAIMER 63 64 This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors 65 "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties 66 of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 67 CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, 68 including but not limited to procurement of substitute goods or services; loss of use, data, or profits, 69 or business interruption, however caused and on any theory of liability, whether in contract, strict 70 liability, or tort (including negligence), arising in any way out of the use of this software, even if 71 advised of the possibility of such damage. 72 73 5. CONTACT INFORMATION 74 75 Fraunhofer Institute for Integrated Circuits IIS 76 Attention: Audio and Multimedia Departments - FDK AAC LL 77 Am Wolfsmantel 33 78 91058 Erlangen, Germany 79 80 www.iis.fraunhofer.de/amm 81 amm-info (at) iis.fraunhofer.de 82 ----------------------------------------------------------------------------------------------------------- */ 83 84 /***************************** MPEG-4 AAC Decoder ************************** 85 86 Author(s): Josef Hoepfl 87 Description: Definition of constant tables 88 89 ******************************************************************************/ 90 91 #ifndef AAC_ROM_H 92 #define AAC_ROM_H 93 94 #include "common_fix.h" 95 #include "FDK_audio.h" 96 #include "aacdec_hcr_types.h" 97 #include "aacdec_hcrs.h" 98 99 #define AAC_NF_NO_RANDOM_VAL 512 /*!< Size of random number array for noise floor */ 100 101 #define INV_QUANT_TABLESIZE 256 102 103 extern const FIXP_DBL InverseQuantTable [INV_QUANT_TABLESIZE + 1] ; 104 extern const FIXP_DBL MantissaTable [4][14] ; 105 extern const SCHAR ExponentTable [4][14] ; 106 107 #define NUM_LD_COEF_512 1536 108 #define NUM_LD_COEF_480 1440 109 /* Window table partition exponents. */ 110 #define WTS0 (1) 111 #define WTS1 (0) 112 #define WTS2 (-2) 113 extern const FIXP_WTB LowDelaySynthesis512[1536]; 114 extern const FIXP_WTB LowDelaySynthesis480[1440]; 115 116 typedef struct { 117 const SHORT *sfbOffsetLong; 118 const SHORT *sfbOffsetShort; 119 UCHAR numberOfSfbLong; 120 UCHAR numberOfSfbShort; 121 } SFB_INFO; 122 123 extern const SFB_INFO sfbOffsetTables[5][16]; 124 125 /* Huffman tables */ 126 enum { 127 HuffmanBits = 2, 128 HuffmanEntries = (1 << HuffmanBits) 129 }; 130 131 typedef struct 132 { 133 const USHORT (*CodeBook)[HuffmanEntries]; 134 UCHAR Dimension; 135 UCHAR numBits; 136 UCHAR Offset; 137 } CodeBookDescription; 138 139 extern const CodeBookDescription AACcodeBookDescriptionTable[13]; 140 extern const CodeBookDescription AACcodeBookDescriptionSCL; 141 142 143 extern const STATEFUNC aStateConstant2State[]; 144 145 extern const SCHAR aCodebook2StartInt[]; 146 147 extern const UCHAR aMinOfCbPair[]; 148 extern const UCHAR aMaxOfCbPair[]; 149 150 extern const UCHAR aMaxCwLen[]; 151 extern const UCHAR aDimCb[]; 152 extern const UCHAR aDimCbShift[]; 153 extern const UCHAR aSignCb[]; 154 extern const UCHAR aCbPriority[]; 155 156 extern const UINT *aHuffTable[]; 157 extern const SCHAR *aQuantTable[]; 158 159 extern const USHORT aLargestAbsoluteValue[]; 160 161 extern const UINT aHuffTreeRvlcEscape[]; 162 extern const UINT aHuffTreeRvlCodewds[]; 163 164 165 extern const UCHAR tns_max_bands_tbl[13][2]; 166 167 extern const UCHAR tns_max_bands_tbl_480[5]; 168 extern const UCHAR tns_max_bands_tbl_512[5]; 169 170 #define FIXP_TCC FIXP_DBL 171 172 extern const FIXP_TCC FDKaacDec_tnsCoeff3[8]; 173 extern const FIXP_TCC FDKaacDec_tnsCoeff4[16]; 174 175 extern const USHORT randomSign[AAC_NF_NO_RANDOM_VAL/16]; 176 177 extern const FIXP_DBL pow2_div24minus1[47]; 178 extern const int offsetTab[2][16]; 179 180 /* Channel mapping indices for time domain I/O. First dimension is channel count-1. */ 181 extern const UCHAR channelMappingTablePassthrough[8][8]; 182 extern const UCHAR channelMappingTableWAV[8][8]; 183 184 /* Lookup tables for elements in ER bitstream */ 185 extern const MP4_ELEMENT_ID elementsTab[8][7]; 186 187 #endif /* #ifndef AAC_ROM_H */ 188
