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 decoder library ****************************** 96 97 Author(s): Josef Hoepfl 98 99 Description: 100 101 *******************************************************************************/ 102 103 #include "aac_ram.h" 104 #include "aac_rom.h" 105 106 #define WORKBUFFER1_TAG 0 107 #define WORKBUFFER2_TAG 1 108 109 #define WORKBUFFER3_TAG 4 110 #define WORKBUFFER4_TAG 5 111 112 #define WORKBUFFER5_TAG 6 113 114 #define WORKBUFFER6_TAG 7 115 116 /*! The structure AAC_DECODER_INSTANCE is the top level structure holding all 117 decoder configurations, handles and structs. 118 */ 119 C_ALLOC_MEM(AacDecoder, struct AAC_DECODER_INSTANCE, 1) 120 121 /*! 122 \name StaticAacData 123 124 Static memory areas, must not be overwritten in other sections of the decoder 125 */ 126 /* @{ */ 127 128 /*! The structure CAacDecoderStaticChannelInfo contains the static sideinfo 129 which is needed for the decoding of one aac channel. <br> Dimension: 130 #AacDecoderChannels */ 131 C_ALLOC_MEM2(AacDecoderStaticChannelInfo, CAacDecoderStaticChannelInfo, 1, (8)) 132 133 /*! The structure CAacDecoderChannelInfo contains the dynamic sideinfo which is 134 needed for the decoding of one aac channel. <br> Dimension: 135 #AacDecoderChannels */ 136 C_AALLOC_MEM2(AacDecoderChannelInfo, CAacDecoderChannelInfo, 1, (8)) 137 138 /*! Overlap buffer */ 139 C_AALLOC_MEM2(OverlapBuffer, FIXP_DBL, OverlapBufferSize, (8)) 140 141 C_ALLOC_MEM(DrcInfo, CDrcInfo, 1) 142 143 /*! The structure CpePersistentData holds the persistent data shared by both 144 channels of a CPE. <br> It needs to be allocated for each CPE. <br> 145 Dimension: 1 */ 146 C_ALLOC_MEM(CpePersistentData, CpePersistentData, 1) 147 148 /*! The structure CCplxPredictionData holds data for complex stereo prediction. 149 <br> Dimension: 1 150 */ 151 C_ALLOC_MEM(CplxPredictionData, CCplxPredictionData, 1) 152 153 /*! The buffer holds time samples for the crossfade in case of an USAC DASH IPF 154 config change Dimension: (8) 155 */ 156 C_ALLOC_MEM2(TimeDataFlush, INT_PCM, TIME_DATA_FLUSH_SIZE, (8)) 157 158 /* @} */ 159 160 /*! 161 \name DynamicAacData 162 163 Dynamic memory areas, might be reused in other algorithm sections, 164 e.g. the sbr decoder 165 */ 166 167 /* Take into consideration to make use of the WorkBufferCore[3/4] for decoder 168 * configurations with more than 2 channels */ 169 C_ALLOC_MEM_OVERLAY(WorkBufferCore2, FIXP_DBL, ((8) * 1024), SECT_DATA_L2, 170 WORKBUFFER2_TAG) 171 172 C_ALLOC_MEM_OVERLAY(WorkBufferCore3, FIXP_DBL, WB_SECTION_SIZE, SECT_DATA_L2, 173 WORKBUFFER3_TAG) 174 C_AALLOC_MEM(WorkBufferCore4, FIXP_DBL, WB_SECTION_SIZE) 175 C_ALLOC_MEM_OVERLAY(WorkBufferCore6, SCHAR, 176 fMax((INT)(sizeof(FIXP_DBL) * WB_SECTION_SIZE), 177 (INT)sizeof(CAacDecoderCommonData)), 178 SECT_DATA_L2, WORKBUFFER6_TAG) 179 180 C_ALLOC_MEM_OVERLAY(WorkBufferCore1, CWorkBufferCore1, 1, SECT_DATA_L1, 181 WORKBUFFER1_TAG) 182 183 /* double buffer size needed for de-/interleaving */ 184 C_ALLOC_MEM_OVERLAY(WorkBufferCore5, PCM_DEC, (8) * (1024 * 4) * 2, 185 SECT_DATA_EXTERN, WORKBUFFER5_TAG) 186