1 /* ----------------------------------------------------------------------------- 2 Software License for The Fraunhofer FDK AAC Codec Library for Android 3 4 © Copyright 1995 - 2019 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. Lohwasser, M. Gayer 98 99 Description: 100 101 *******************************************************************************/ 102 103 /*! 104 \file 105 \brief Memory layout 106 \author Markus Lohwasser 107 */ 108 109 #ifndef AACENC_RAM_H 110 #define AACENC_RAM_H 111 112 #include "common_fix.h" 113 114 #include "aacenc.h" 115 #include "psy_data.h" 116 #include "interface.h" 117 #include "psy_main.h" 118 #include "bitenc.h" 119 #include "bit_cnt.h" 120 #include "psy_const.h" 121 122 #define OUTPUTBUFFER_SIZE \ 123 (8192) /*!< Output buffer size has to be at least 6144 bits per channel \ 124 (768 bytes). FDK bitbuffer implementation expects buffer of \ 125 size 2^n. */ 126 127 /* 128 Moved AAC_ENC struct definition from aac_enc.cpp into aacEnc_ram.h to get size 129 and respective static memory in aacEnc_ram.cpp. aac_enc.h is the outward 130 visible header file and putting the struct into would cause necessity of 131 additional visible header files outside library. 132 */ 133 134 /* define hBitstream size: max AAC framelength is 6144 bits/channel */ 135 /*#define BUFFER_BITSTR_SIZE ((6400*(8)/bbWordSize) +((bbWordSize - 1) / 136 * bbWordSize))*/ 137 138 struct AAC_ENC { 139 AACENC_CONFIG *config; 140 141 INT ancillaryBitsPerFrame; /* ancillary bits per frame calculated from 142 ancillary rate */ 143 144 CHANNEL_MAPPING channelMapping; 145 146 QC_STATE *qcKernel; 147 QC_OUT *qcOut[(1)]; 148 149 PSY_OUT *psyOut[(1)]; 150 PSY_INTERNAL *psyKernel; 151 152 /* lifetime vars */ 153 154 CHANNEL_MODE encoderMode; 155 INT bandwidth90dB; 156 AACENC_BITRATE_MODE bitrateMode; 157 158 INT dontWriteAdif; /* use: write ADIF header only before 1st frame */ 159 160 FIXP_DBL *dynamic_RAM; 161 162 INT maxChannels; /* used while allocation */ 163 INT maxElements; 164 INT maxFrames; 165 166 AUDIO_OBJECT_TYPE aot; /* AOT to be used while encoding. */ 167 }; 168 169 #define maxSize(a, b) (((a) > (b)) ? (a) : (b)) 170 171 #define BIT_LOOK_UP_SIZE \ 172 (sizeof(INT) * (MAX_SFB_LONG * (CODE_BOOK_ESC_NDX + 1))) 173 #define MERGE_GAIN_LOOK_UP_SIZE (sizeof(INT) * MAX_SFB_LONG) 174 175 /* Size of AhFlag buffer in function FDKaacEnc_adaptThresholdsToPe() */ 176 #define ADJ_THR_AH_FLAG_SIZE (sizeof(UCHAR) * ((8)) * (2) * MAX_GROUPED_SFB) 177 /* Size of ThrExp buffer in function FDKaacEnc_adaptThresholdsToPe() */ 178 #define ADJ_THR_THR_EXP_SIZE (sizeof(FIXP_DBL) * ((8)) * (2) * MAX_GROUPED_SFB) 179 /* Size of sfbNActiveLinesLdData buffer in function FDKaacEnc_correctThresh() */ 180 #define ADJ_THR_ACT_LIN_LD_DATA_SIZE \ 181 (sizeof(FIXP_DBL) * ((8)) * (2) * MAX_GROUPED_SFB) 182 /* Total amount of dynamic buffer needed in adjust thresholds functionality */ 183 #define ADJ_THR_SIZE \ 184 (ADJ_THR_AH_FLAG_SIZE + ADJ_THR_THR_EXP_SIZE + ADJ_THR_ACT_LIN_LD_DATA_SIZE) 185 186 /* Dynamic RAM - Allocation */ 187 /* 188 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 189 | P_BUF_0 | P_BUF_1 | 190 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 191 | QC_OUT_CH | PSY_DYN | 192 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 193 | | BitLookUp+MergeGainLookUp | 194 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 195 | | AH_FLAG | THR_EXP | ACT_LIN_LD_DATA | 196 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 197 | | Bitstream output buffer | 198 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 199 */ 200 201 #define BUF_SIZE_0 (ALIGN_SIZE(sizeof(QC_OUT_CHANNEL)) * (8)) 202 #define BUF_SIZE_1 \ 203 (ALIGN_SIZE(maxSize(maxSize(sizeof(PSY_DYNAMIC), \ 204 (BIT_LOOK_UP_SIZE + MERGE_GAIN_LOOK_UP_SIZE)), \ 205 ADJ_THR_SIZE))) 206 207 #define P_BUF_0 (0) 208 #define P_BUF_1 (P_BUF_0 + BUF_SIZE_0) 209 210 #define AAC_ENC_DYN_RAM_SIZE (BUF_SIZE_0 + BUF_SIZE_1) 211 212 H_ALLOC_MEM(AACdynamic_RAM, FIXP_DBL) 213 /* 214 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 215 END - Dynamic RAM - Allocation */ 216 217 /* 218 See further Memory Allocation details in aacEnc_ram.cpp 219 */ 220 H_ALLOC_MEM(Ram_aacEnc_AacEncoder, AAC_ENC) 221 222 H_ALLOC_MEM(Ram_aacEnc_PsyElement, PSY_ELEMENT) 223 224 H_ALLOC_MEM(Ram_aacEnc_PsyInternal, PSY_INTERNAL) 225 H_ALLOC_MEM(Ram_aacEnc_PsyStatic, PSY_STATIC) 226 H_ALLOC_MEM(Ram_aacEnc_PsyInputBuffer, INT_PCM) 227 228 PSY_DYNAMIC *GetRam_aacEnc_PsyDynamic(int n, UCHAR *dynamic_RAM); 229 230 H_ALLOC_MEM(Ram_aacEnc_PsyOutChannel, PSY_OUT_CHANNEL) 231 232 H_ALLOC_MEM(Ram_aacEnc_PsyOut, PSY_OUT) 233 H_ALLOC_MEM(Ram_aacEnc_PsyOutElements, PSY_OUT_ELEMENT) 234 235 H_ALLOC_MEM(Ram_aacEnc_QCstate, QC_STATE) 236 H_ALLOC_MEM(Ram_aacEnc_AdjustThreshold, ADJ_THR_STATE) 237 238 H_ALLOC_MEM(Ram_aacEnc_AdjThrStateElement, ATS_ELEMENT) 239 H_ALLOC_MEM(Ram_aacEnc_ElementBits, ELEMENT_BITS) 240 H_ALLOC_MEM(Ram_aacEnc_BitCntrState, BITCNTR_STATE) 241 242 INT *GetRam_aacEnc_BitLookUp(int n, UCHAR *dynamic_RAM); 243 INT *GetRam_aacEnc_MergeGainLookUp(int n, UCHAR *dynamic_RAM); 244 QC_OUT_CHANNEL *GetRam_aacEnc_QCchannel(int n, UCHAR *dynamic_RAM); 245 246 H_ALLOC_MEM(Ram_aacEnc_QCout, QC_OUT) 247 H_ALLOC_MEM(Ram_aacEnc_QCelement, QC_OUT_ELEMENT) 248 249 #endif /* #ifndef AACENC_RAM_H */ 250