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 /**************************** AAC encoder library ****************************** 96 97 Author(s): M.Werner 98 99 Description: Huffman Bitcounter & coder 100 101 *******************************************************************************/ 102 103 #ifndef BIT_CNT_H 104 #define BIT_CNT_H 105 106 #include "common_fix.h" 107 #include "FDK_bitstream.h" 108 #include "aacEnc_rom.h" 109 110 #define INVALID_BITCOUNT (FDK_INT_MAX / 4) 111 112 /* 113 code book number table 114 */ 115 116 enum codeBookNo { 117 CODE_BOOK_ZERO_NO = 0, 118 CODE_BOOK_1_NO = 1, 119 CODE_BOOK_2_NO = 2, 120 CODE_BOOK_3_NO = 3, 121 CODE_BOOK_4_NO = 4, 122 CODE_BOOK_5_NO = 5, 123 CODE_BOOK_6_NO = 6, 124 CODE_BOOK_7_NO = 7, 125 CODE_BOOK_8_NO = 8, 126 CODE_BOOK_9_NO = 9, 127 CODE_BOOK_10_NO = 10, 128 CODE_BOOK_ESC_NO = 11, 129 CODE_BOOK_RES_NO = 12, 130 CODE_BOOK_PNS_NO = 13, 131 CODE_BOOK_IS_OUT_OF_PHASE_NO = 14, 132 CODE_BOOK_IS_IN_PHASE_NO = 15 133 134 }; 135 136 /* 137 code book index table 138 */ 139 140 enum codeBookNdx { 141 CODE_BOOK_ZERO_NDX, 142 CODE_BOOK_1_NDX, 143 CODE_BOOK_2_NDX, 144 CODE_BOOK_3_NDX, 145 CODE_BOOK_4_NDX, 146 CODE_BOOK_5_NDX, 147 CODE_BOOK_6_NDX, 148 CODE_BOOK_7_NDX, 149 CODE_BOOK_8_NDX, 150 CODE_BOOK_9_NDX, 151 CODE_BOOK_10_NDX, 152 CODE_BOOK_ESC_NDX, 153 CODE_BOOK_RES_NDX, 154 CODE_BOOK_PNS_NDX, 155 CODE_BOOK_IS_OUT_OF_PHASE_NDX, 156 CODE_BOOK_IS_IN_PHASE_NDX, 157 NUMBER_OF_CODE_BOOKS 158 }; 159 160 /* 161 code book lav table 162 */ 163 164 enum codeBookLav { 165 CODE_BOOK_ZERO_LAV = 0, 166 CODE_BOOK_1_LAV = 1, 167 CODE_BOOK_2_LAV = 1, 168 CODE_BOOK_3_LAV = 2, 169 CODE_BOOK_4_LAV = 2, 170 CODE_BOOK_5_LAV = 4, 171 CODE_BOOK_6_LAV = 4, 172 CODE_BOOK_7_LAV = 7, 173 CODE_BOOK_8_LAV = 7, 174 CODE_BOOK_9_LAV = 12, 175 CODE_BOOK_10_LAV = 12, 176 CODE_BOOK_ESC_LAV = 16, 177 CODE_BOOK_SCF_LAV = 60, 178 CODE_BOOK_PNS_LAV = 60 179 }; 180 181 INT FDKaacEnc_bitCount(const SHORT *aQuantSpectrum, const INT noOfSpecLines, 182 INT maxVal, INT *bitCountLut); 183 184 INT FDKaacEnc_countValues(SHORT *values, INT width, INT codeBook); 185 186 INT FDKaacEnc_codeValues(SHORT *values, INT width, INT codeBook, 187 HANDLE_FDK_BITSTREAM hBitstream); 188 189 INT FDKaacEnc_codeScalefactorDelta(INT scalefactor, 190 HANDLE_FDK_BITSTREAM hBitstream); 191 192 inline INT FDKaacEnc_bitCountScalefactorDelta(const INT delta) { 193 FDK_ASSERT((0 <= (delta + CODE_BOOK_SCF_LAV)) && 194 ((delta + CODE_BOOK_SCF_LAV) < 195 (int)(sizeof(FDKaacEnc_huff_ltabscf) / 196 sizeof((FDKaacEnc_huff_ltabscf[0]))))); 197 return ((INT)FDKaacEnc_huff_ltabscf[delta + CODE_BOOK_SCF_LAV]); 198 } 199 200 #endif 201
