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 /******************* Library for basic calculation routines ******************** 96 97 Author(s): M. Lohwasser 98 99 Description: common bitbuffer read/write routines 100 101 *******************************************************************************/ 102 103 #ifndef FDK_BITBUFFER_H 104 #define FDK_BITBUFFER_H 105 106 #include "FDK_archdef.h" 107 #include "machine_type.h" 108 109 /* leave 3 bits headroom so MAX_BUFSIZE can be represented in bits as well. */ 110 #define MAX_BUFSIZE_BYTES (0x10000000) 111 112 typedef struct { 113 UINT ValidBits; 114 UINT ReadOffset; 115 UINT WriteOffset; 116 UINT BitNdx; 117 118 UCHAR *Buffer; 119 UINT bufSize; 120 UINT bufBits; 121 } FDK_BITBUF; 122 123 typedef FDK_BITBUF *HANDLE_FDK_BITBUF; 124 125 #ifdef __cplusplus 126 extern "C" { 127 #endif 128 129 extern const UINT BitMask[32 + 1]; 130 131 /** The BitBuffer Functions are called straight from FDK_bitstream Interface. 132 For Functions functional survey look there. 133 */ 134 135 void FDK_CreateBitBuffer(HANDLE_FDK_BITBUF *hBitBuffer, UCHAR *pBuffer, 136 UINT bufSize); 137 138 void FDK_InitBitBuffer(HANDLE_FDK_BITBUF hBitBuffer, UCHAR *pBuffer, 139 UINT bufSize, UINT validBits); 140 141 void FDK_ResetBitBuffer(HANDLE_FDK_BITBUF hBitBuffer); 142 143 void FDK_DeleteBitBuffer(HANDLE_FDK_BITBUF hBitBuffer); 144 145 INT FDK_get(HANDLE_FDK_BITBUF hBitBuffer, const UINT numberOfBits); 146 147 INT FDK_get32(HANDLE_FDK_BITBUF hBitBuf); 148 149 void FDK_put(HANDLE_FDK_BITBUF hBitBuffer, UINT value, const UINT numberOfBits); 150 151 INT FDK_getBwd(HANDLE_FDK_BITBUF hBitBuffer, const UINT numberOfBits); 152 void FDK_putBwd(HANDLE_FDK_BITBUF hBitBuffer, UINT value, 153 const UINT numberOfBits); 154 155 void FDK_pushBack(HANDLE_FDK_BITBUF hBitBuffer, const UINT numberOfBits, 156 UCHAR config); 157 158 void FDK_pushForward(HANDLE_FDK_BITBUF hBitBuffer, const UINT numberOfBits, 159 UCHAR config); 160 161 UINT FDK_getValidBits(HANDLE_FDK_BITBUF hBitBuffer); 162 163 INT FDK_getFreeBits(HANDLE_FDK_BITBUF hBitBuffer); 164 165 void FDK_Feed(HANDLE_FDK_BITBUF hBitBuffer, const UCHAR inputBuffer[], 166 const UINT bufferSize, UINT *bytesValid); 167 168 void FDK_Copy(HANDLE_FDK_BITBUF hBitBufDst, HANDLE_FDK_BITBUF hBitBufSrc, 169 UINT *bytesValid); 170 171 void FDK_Fetch(HANDLE_FDK_BITBUF hBitBuffer, UCHAR outBuf[], UINT *writeBytes); 172 173 #ifdef __cplusplus 174 } 175 #endif 176 177 #endif 178