1 /* ----------------------------------------------------------------------------- 2 Software License for The Fraunhofer FDK AAC Codec Library for Android 3 4 © Copyright 1995 - 2018 Fraunhofer-Gesellschaft zur Förderung 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@iis.fraunhofer.de 93 ----------------------------------------------------------------------------- */ 94 95 /*********************** MPEG surround encoder library ************************* 96 97 Author(s): Markus Lohwasser 98 99 Description: SAC-Encoder constant huffman tables 100 101 *******************************************************************************/ 102 103 #ifndef SACENC_HUFF_TAB_H 104 #define SACENC_HUFF_TAB_H 105 106 /* Includes ******************************************************************/ 107 #include "machine_type.h" 108 109 /* Defines *******************************************************************/ 110 #define HUFF_PACK(a, b) \ 111 { \ 112 ((((ULONG)a) & 0x00FFFFFF) << 8) | (((ULONG)b) & 0xFF) \ 113 } /*!< Pack huffman value and length information. */ 114 #define HUFF_VALUE(a) \ 115 (((a.packed >> 8) & 0x00FFFFFF)) /*!< Return value from packed table entry. \ 116 */ 117 #define HUFF_LENGTH(a) \ 118 ((a.packed & 0xFF)) /*!< Return length from packed table entry. */ 119 120 /* Data Types ****************************************************************/ 121 /** 122 * \brief This struct contains packed huffman entries. 123 * 124 * The packed entry consist of hffman value and length information. 125 * 126 * |---------------------------------| 127 * | value | length | 128 * |---------------------------------| 129 * |<------- 31...8 ------->|< 7..0 >| 130 */ 131 typedef struct { 132 ULONG packed; /*! Packed huffman entry: 133 - lower 8 bit are reservoed for length information 134 - upper 24 bit contains huffman value */ 135 } HUFF_ENTRY; 136 137 typedef struct { 138 HUFF_ENTRY entry[2][2]; 139 HUFF_ENTRY escape; 140 141 } LAV1_2D; 142 143 typedef struct { 144 HUFF_ENTRY entry[4][4]; 145 HUFF_ENTRY escape; 146 147 } LAV3_2D; 148 149 typedef struct { 150 HUFF_ENTRY entry[6][6]; 151 HUFF_ENTRY escape; 152 153 } LAV5_2D; 154 155 typedef struct { 156 HUFF_ENTRY entry[7][7]; 157 HUFF_ENTRY escape; 158 159 } LAV6_2D; 160 161 typedef struct { 162 HUFF_ENTRY entry[8][8]; 163 HUFF_ENTRY escape; 164 165 } LAV7_2D; 166 167 typedef struct { 168 HUFF_ENTRY entry[10][10]; 169 HUFF_ENTRY escape; 170 171 } LAV9_2D; 172 173 typedef struct { 174 HUFF_ENTRY entry[13][13]; 175 HUFF_ENTRY escape; 176 177 } LAV12_2D; 178 179 typedef struct { 180 LAV3_2D lav3; 181 LAV5_2D lav5; 182 LAV7_2D lav7; 183 LAV9_2D lav9; 184 185 } HUFF_CLD_TAB_2D; 186 187 typedef struct { 188 LAV1_2D lav1; 189 LAV3_2D lav3; 190 LAV5_2D lav5; 191 LAV7_2D lav7; 192 193 } HUFF_ICC_TAB_2D; 194 195 typedef struct { 196 HUFF_ENTRY h1D[2][31]; 197 HUFF_CLD_TAB_2D h2D[2][2]; 198 199 } HUFF_CLD_TABLE; 200 201 typedef struct { 202 HUFF_ENTRY h1D[2][8]; 203 HUFF_ICC_TAB_2D h2D[2][2]; 204 205 } HUFF_ICC_TABLE; 206 207 typedef struct { 208 HUFF_ENTRY cld[31]; 209 HUFF_ENTRY icc[8]; 210 211 } HUFF_PT0_TABLE; 212 213 typedef HUFF_ENTRY HUFF_RES_TABLE[5][8]; 214 215 /* Constants *****************************************************************/ 216 extern const HUFF_CLD_TABLE fdk_sacenc_huffCLDTab; 217 extern const HUFF_ICC_TABLE fdk_sacenc_huffICCTab; 218 extern const HUFF_PT0_TABLE fdk_sacenc_huffPart0Tab; 219 220 /* Function / Class Declarations *********************************************/ 221 222 #endif /* SACENC_HUFF_TAB_H */ 223