1 2/* ----------------------------------------------------------------------------------------------------------- 3Software License for The Fraunhofer FDK AAC Codec Library for Android 4 5� Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur F�rderung der angewandten Forschung e.V. 6 All rights reserved. 7 8 1. INTRODUCTION 9The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements 10the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. 11This FDK AAC Codec software is intended to be used on a wide variety of Android devices. 12 13AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual 14audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by 15independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part 16of the MPEG specifications. 17 18Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) 19may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners 20individually for the purpose of encoding or decoding bit streams in products that are compliant with 21the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license 22these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec 23software may already be covered under those patent licenses when it is used for those licensed purposes only. 24 25Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, 26are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional 27applications information and documentation. 28 292. COPYRIGHT LICENSE 30 31Redistribution and use in source and binary forms, with or without modification, are permitted without 32payment of copyright license fees provided that you satisfy the following conditions: 33 34You must retain the complete text of this software license in redistributions of the FDK AAC Codec or 35your modifications thereto in source code form. 36 37You must retain the complete text of this software license in the documentation and/or other materials 38provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. 39You must make available free of charge copies of the complete source code of the FDK AAC Codec and your 40modifications thereto to recipients of copies in binary form. 41 42The name of Fraunhofer may not be used to endorse or promote products derived from this library without 43prior written permission. 44 45You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec 46software or your modifications thereto. 47 48Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software 49and 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." 52 533. NO PATENT LICENSE 54 55NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, 56ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with 57respect to this software. 58 59You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized 60by appropriate patent licenses. 61 624. DISCLAIMER 63 64This 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 66of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 67CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, 68including but not limited to procurement of substitute goods or services; loss of use, data, or profits, 69or business interruption, however caused and on any theory of liability, whether in contract, strict 70liability, or tort (including negligence), arising in any way out of the use of this software, even if 71advised of the possibility of such damage. 72 735. CONTACT INFORMATION 74 75Fraunhofer Institute for Integrated Circuits IIS 76Attention: Audio and Multimedia Departments - FDK AAC LL 77Am Wolfsmantel 33 7891058 Erlangen, Germany 79 80www.iis.fraunhofer.de/amm 81amm-info@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 103extern const FIXP_DBL InverseQuantTable [INV_QUANT_TABLESIZE + 1] ; 104extern const FIXP_DBL MantissaTable [4][14] ; 105extern 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) 113extern const FIXP_WTB LowDelaySynthesis512[1536]; 114extern const FIXP_WTB LowDelaySynthesis480[1440]; 115 116typedef struct { 117 const SHORT *sfbOffsetLong; 118 const SHORT *sfbOffsetShort; 119 UCHAR numberOfSfbLong; 120 UCHAR numberOfSfbShort; 121} SFB_INFO; 122 123extern const SFB_INFO sfbOffsetTables[5][16]; 124 125/* Huffman tables */ 126enum { 127 HuffmanBits = 2, 128 HuffmanEntries = (1 << HuffmanBits) 129}; 130 131typedef struct 132{ 133 const USHORT (*CodeBook)[HuffmanEntries]; 134 UCHAR Dimension; 135 UCHAR numBits; 136 UCHAR Offset; 137} CodeBookDescription; 138 139extern const CodeBookDescription AACcodeBookDescriptionTable[13]; 140extern const CodeBookDescription AACcodeBookDescriptionSCL; 141 142 143extern const STATEFUNC aStateConstant2State[]; 144 145extern const SCHAR aCodebook2StartInt[]; 146 147extern const UCHAR aMinOfCbPair[]; 148extern const UCHAR aMaxOfCbPair[]; 149 150extern const UCHAR aMaxCwLen[]; 151extern const UCHAR aDimCb[]; 152extern const UCHAR aDimCbShift[]; 153extern const UCHAR aSignCb[]; 154extern const UCHAR aCbPriority[]; 155 156extern const UINT *aHuffTable[]; 157extern const SCHAR *aQuantTable[]; 158 159extern const USHORT aLargestAbsoluteValue[]; 160 161extern const UINT aHuffTreeRvlcEscape[]; 162extern const UINT aHuffTreeRvlCodewds[]; 163 164 165extern const UCHAR tns_max_bands_tbl[13][2]; 166 167extern const UCHAR tns_max_bands_tbl_480[13]; 168extern const UCHAR tns_max_bands_tbl_512[13]; 169 170#define FIXP_TCC FIXP_DBL 171 172extern const FIXP_TCC FDKaacDec_tnsCoeff3[8]; 173extern const FIXP_TCC FDKaacDec_tnsCoeff4[16]; 174 175extern const USHORT randomSign[AAC_NF_NO_RANDOM_VAL/16]; 176 177extern const FIXP_DBL pow2_div24minus1[47]; 178extern const int offsetTab[2][16]; 179 180/* Channel mapping indices for time domain I/O. 181 The first dimension is the channel configuration index. */ 182extern const UCHAR channelMappingTablePassthrough[15][8]; 183extern const UCHAR channelMappingTableWAV[15][8]; 184 185/* Lookup tables for elements in ER bitstream */ 186extern const MP4_ELEMENT_ID elementsTab[15][7]; 187 188#endif /* #ifndef AAC_ROM_H */ 189