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 /**************************** AAC encoder library ****************************** 96 97 Author(s): M. Werner 98 99 Description: Bitstream encoder 100 101 *******************************************************************************/ 102 103 #ifndef BITENC_H 104 #define BITENC_H 105 106 #include "qc_data.h" 107 #include "aacenc_tns.h" 108 #include "channel_map.h" 109 #include "interface.h" /* obsolete, when PSY_OUT is thrown out of the WritBS-call! */ 110 #include "FDK_audio.h" 111 #include "aacenc.h" 112 113 #include "tpenc_lib.h" 114 115 typedef enum { 116 MAX_ENCODER_CHANNELS = 9, 117 MAX_BLOCK_TYPES = 4, 118 MAX_AAC_LAYERS = 9, 119 MAX_LAYERS = MAX_AAC_LAYERS, /* only one core layer if present */ 120 FIRST_LAY = 1 /* default layer number for AAC nonscalable */ 121 } _MAX_CONST; 122 123 #define BUFFER_MX_HUFFCB_SIZE \ 124 (32 * sizeof(INT)) /* our FDK_bitbuffer needs size of power 2 */ 125 126 #define EL_ID_BITS (3) 127 128 /** 129 * \brief Arbitrary order bitstream writer. This function can either assemble a 130 * bit stream and write into the bit buffer of hTpEnc or calculate the number of 131 * static bits (signal independent) TpEnc handle must be NULL in this 132 * case. Or also Calculate the minimum possible number of static bits 133 * which by disabling all tools e.g. MS, TNS and sbfCnt=0. The minCnt 134 * parameter has to be 1 in this latter case. 135 * \param hTpEnc Transport encoder handle. If NULL, the number of static bits 136 * will be returned into *pBitDemand. 137 * \param pElInfo 138 * \param qcOutChannel 139 * \param hReorderInfo 140 * \param psyOutElement 141 * \param psyOutChannel 142 * \param syntaxFlags Bit stream syntax flags as defined in FDK_audio.h (Audio 143 * Codec flags). 144 * \param aot 145 * \param epConfig 146 * \param pBitDemand Pointer to an int where the amount of bits is returned 147 * into. The returned value depends on if hTpEnc is NULL and minCnt. 148 * \param minCnt If non-zero the value returned into *pBitDemand is the absolute 149 * minimum required amount of static bits in order to write a valid bit stream. 150 * \return AAC_ENCODER_ERROR error code 151 */ 152 AAC_ENCODER_ERROR FDKaacEnc_ChannelElementWrite( 153 HANDLE_TRANSPORTENC hTpEnc, ELEMENT_INFO *pElInfo, 154 QC_OUT_CHANNEL *qcOutChannel[(2)], PSY_OUT_ELEMENT *psyOutElement, 155 PSY_OUT_CHANNEL *psyOutChannel[(2)], UINT syntaxFlags, 156 AUDIO_OBJECT_TYPE aot, SCHAR epConfig, INT *pBitDemand, UCHAR minCnt); 157 /** 158 * \brief Write bit stream or account static bits 159 * \param hTpEnc transport encoder handle. If NULL, the function will 160 * not write any bit stream data but only count the amount 161 * of static (signal independent) bits 162 * \param channelMapping Channel mapping info 163 * \param qcOut 164 * \param psyOut 165 * \param qcKernel 166 * \param hBSE 167 * \param aot Audio Object Type being encoded 168 * \param syntaxFlags Flags indicating format specific detail 169 * \param epConfig Error protection config 170 */ 171 AAC_ENCODER_ERROR FDKaacEnc_WriteBitstream(HANDLE_TRANSPORTENC hTpEnc, 172 CHANNEL_MAPPING *channelMapping, 173 QC_OUT *qcOut, PSY_OUT *psyOut, 174 QC_STATE *qcKernel, 175 AUDIO_OBJECT_TYPE aot, 176 UINT syntaxFlags, SCHAR epConfig); 177 178 INT FDKaacEnc_writeExtensionData(HANDLE_TRANSPORTENC hTpEnc, 179 QC_OUT_EXTENSION *pExtension, 180 INT elInstanceTag, UINT alignAnchor, 181 UINT syntaxFlags, AUDIO_OBJECT_TYPE aot, 182 SCHAR epConfig); 183 184 #endif /* BITENC_H */ 185