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: Quantizing & coding data 100 101 *******************************************************************************/ 102 103 #ifndef QC_DATA_H 104 #define QC_DATA_H 105 106 #include "aacenc.h" 107 #include "psy_const.h" 108 #include "dyn_bits.h" 109 #include "adj_thr_data.h" 110 #include "line_pe.h" 111 #include "FDK_audio.h" 112 #include "interface.h" 113 114 typedef enum { 115 QCDATA_BR_MODE_INVALID = -1, 116 QCDATA_BR_MODE_CBR = 0, /* Constant bit rate, given average bitrate */ 117 QCDATA_BR_MODE_VBR_1 = 1, /* Variable bit rate, very low */ 118 QCDATA_BR_MODE_VBR_2 = 2, /* Variable bit rate, low */ 119 QCDATA_BR_MODE_VBR_3 = 3, /* Variable bit rate, medium */ 120 QCDATA_BR_MODE_VBR_4 = 4, /* Variable bit rate, high */ 121 QCDATA_BR_MODE_VBR_5 = 5, /* Variable bit rate, very high */ 122 QCDATA_BR_MODE_FF = 6, /* Fixed frame mode. */ 123 QCDATA_BR_MODE_SFR = 7 /* Superframe mode. */ 124 125 } QCDATA_BR_MODE; 126 127 typedef struct { 128 MP4_ELEMENT_ID elType; 129 INT instanceTag; 130 INT nChannelsInEl; 131 INT ChannelIndex[2]; 132 FIXP_DBL relativeBits; 133 } ELEMENT_INFO; 134 135 typedef struct { 136 CHANNEL_MODE encMode; 137 INT nChannels; 138 INT nChannelsEff; 139 INT nElements; 140 ELEMENT_INFO elInfo[((8))]; 141 } CHANNEL_MAPPING; 142 143 typedef struct { 144 INT paddingRest; 145 } PADDING; 146 147 /* Quantizing & coding stage */ 148 149 struct QC_INIT { 150 CHANNEL_MAPPING *channelMapping; 151 INT sceCpe; /* not used yet */ 152 INT maxBits; /* maximum number of bits in reservoir */ 153 INT averageBits; /* average number of bits we should use */ 154 INT bitRes; 155 INT sampleRate; /* output sample rate */ 156 INT isLowDelay; /* if set, calc bits2PE factor depending on samplerate */ 157 INT staticBits; /* Bits per frame consumed by transport layers. */ 158 QCDATA_BR_MODE bitrateMode; 159 INT meanPe; 160 INT chBitrate; /* Bitrate/channel */ 161 INT invQuant; 162 INT maxIterations; /* Maximum number of allowed iterations before 163 FDKaacEnc_crashRecovery() is applied. */ 164 FIXP_DBL maxBitFac; 165 INT bitrate; 166 INT nSubFrames; /* helper variable */ 167 INT minBits; /* minimal number of bits in one frame*/ 168 AACENC_BITRES_MODE bitResMode; /* 0: full bitreservoir, 1: reduced 169 bitreservoir, 2: disabled bitreservoir */ 170 INT bitDistributionMode; /* Configure element-wise execution or execution over 171 all elements for the pe-dependent 172 threshold-adaption */ 173 174 PADDING padding; 175 }; 176 177 typedef struct { 178 FIXP_DBL mdctSpectrum[(1024)]; 179 180 SHORT quantSpec[(1024)]; 181 182 UINT maxValueInSfb[MAX_GROUPED_SFB]; 183 INT scf[MAX_GROUPED_SFB]; 184 INT globalGain; 185 SECTION_DATA sectionData; 186 187 FIXP_DBL sfbFormFactorLdData[MAX_GROUPED_SFB]; 188 189 FIXP_DBL sfbThresholdLdData[MAX_GROUPED_SFB]; 190 FIXP_DBL sfbMinSnrLdData[MAX_GROUPED_SFB]; 191 FIXP_DBL sfbEnergyLdData[MAX_GROUPED_SFB]; 192 FIXP_DBL sfbEnergy[MAX_GROUPED_SFB]; 193 FIXP_DBL sfbWeightedEnergyLdData[MAX_GROUPED_SFB]; 194 195 FIXP_DBL sfbEnFacLd[MAX_GROUPED_SFB]; 196 197 FIXP_DBL sfbSpreadEnergy[MAX_GROUPED_SFB]; 198 199 } QC_OUT_CHANNEL; 200 201 typedef struct { 202 EXT_PAYLOAD_TYPE type; /* type of the extension payload */ 203 INT nPayloadBits; /* size of the payload */ 204 UCHAR *pPayload; /* pointer to payload */ 205 206 } QC_OUT_EXTENSION; 207 208 typedef struct { 209 INT staticBitsUsed; /* for verification purposes */ 210 INT dynBitsUsed; /* for verification purposes */ 211 212 INT extBitsUsed; /* bit consumption of extended fill elements */ 213 INT nExtensions; /* number of extension payloads for this element */ 214 QC_OUT_EXTENSION extension[(1)]; /* reffering extension payload */ 215 216 INT grantedDynBits; 217 218 INT grantedPe; 219 INT grantedPeCorr; 220 221 PE_DATA peData; 222 223 QC_OUT_CHANNEL *qcOutChannel[(2)]; 224 225 UCHAR 226 *dynMem_Ah_Flag; /* pointer to dynamic buffer used by AhFlag in function 227 FDKaacEnc_adaptThresholdsToPe() */ 228 UCHAR 229 *dynMem_Thr_Exp; /* pointer to dynamic buffer used by ThrExp in function 230 FDKaacEnc_adaptThresholdsToPe() */ 231 UCHAR *dynMem_SfbNActiveLinesLdData; /* pointer to dynamic buffer used by 232 sfbNActiveLinesLdData in function 233 FDKaacEnc_correctThresh() */ 234 235 } QC_OUT_ELEMENT; 236 237 typedef struct { 238 QC_OUT_ELEMENT *qcElement[((8))]; 239 QC_OUT_CHANNEL *pQcOutChannels[(8)]; 240 QC_OUT_EXTENSION extension[(2 + 2)]; /* global extension payload */ 241 INT nExtensions; /* number of extension payloads for this AU */ 242 INT maxDynBits; /* maximal allowed dynamic bits in frame */ 243 INT grantedDynBits; /* granted dynamic bits in frame */ 244 INT totFillBits; /* fill bits */ 245 INT elementExtBits; /* element associated extension payload bits, e.g. sbr, 246 drc ... */ 247 INT globalExtBits; /* frame/au associated extension payload bits (anc data 248 ...) */ 249 INT staticBits; /* aac side info bits */ 250 251 INT totalNoRedPe; 252 INT totalGrantedPeCorr; 253 254 INT usedDynBits; /* number of dynamic bits in use */ 255 INT alignBits; /* AU alignment bits */ 256 INT totalBits; /* sum of static, dyn, sbr, fill, align and dse bits */ 257 258 } QC_OUT; 259 260 typedef struct { 261 INT chBitrateEl; /* channel bitrate in element 262 (totalbitrate*el_relativeBits/el_channels) */ 263 INT maxBitsEl; /* used in crash recovery */ 264 INT bitResLevelEl; /* update bitreservoir level in each call of 265 FDKaacEnc_QCMain */ 266 INT maxBitResBitsEl; /* nEffChannels*6144 - averageBitsInFrame */ 267 FIXP_DBL relativeBitsEl; /* Bits relative to total Bits*/ 268 } ELEMENT_BITS; 269 270 typedef struct { 271 /* this is basically struct QC_INIT */ 272 273 INT globHdrBits; 274 INT maxBitsPerFrame; /* maximal allowed bits per frame, 6144*nChannelsEff */ 275 INT minBitsPerFrame; /* minimal allowd bits per fram, superframing - DRM */ 276 INT nElements; 277 QCDATA_BR_MODE bitrateMode; 278 AACENC_BITRES_MODE bitResMode; /* 0: full bitreservoir, 1: reduced 279 bitreservoir, 2: disabled bitreservoir */ 280 INT bitResTot; 281 INT bitResTotMax; 282 INT maxIterations; /* Maximum number of allowed iterations before 283 FDKaacEnc_crashRecovery() is applied. */ 284 INT invQuant; 285 286 FIXP_DBL vbrQualFactor; 287 FIXP_DBL maxBitFac; 288 289 PADDING padding; 290 291 ELEMENT_BITS *elementBits[((8))]; 292 BITCNTR_STATE *hBitCounter; 293 ADJ_THR_STATE *hAdjThr; 294 295 INT dZoneQuantEnable; /* enable dead zone quantizer */ 296 297 } QC_STATE; 298 299 #endif /* QC_DATA_H */ 300
