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 /*********************** MPEG surround decoder library ************************* 96 97 Author(s): 98 99 Description: SAC Dec tables 100 101 *******************************************************************************/ 102 103 #ifndef SAC_ROM_H 104 #define SAC_ROM_H 105 106 #include "FDK_archdef.h" 107 #include "sac_dec_interface.h" 108 109 #include "huff_nodes.h" 110 #include "sac_bitdec.h" 111 #include "machine_type.h" 112 113 /* Global ROM table data type: */ 114 #ifndef ARCH_PREFER_MULT_32x32 115 #define FIXP_CFG FIXP_SGL 116 #define FX_CFG2FX_DBL FX_SGL2FX_DBL 117 #define FX_CFG2FX_SGL 118 #define CFG(a) (FX_DBL2FXCONST_SGL(a)) 119 #define FL2FXCONST_CFG FL2FXCONST_SGL 120 #define FX_DBL2FX_CFG(x) FX_DBL2FX_SGL((FIXP_DBL)(x)) 121 #else 122 #define FIXP_CFG FIXP_DBL 123 #define FX_CFG2FX_DBL 124 #define FX_CFG2FX_SGL FX_DBL2FX_SGL 125 #define CFG(a) FIXP_DBL(a) 126 #define FL2FXCONST_CFG FL2FXCONST_DBL 127 #define FX_DBL2FX_CFG(x) ((FIXP_DBL)(x)) 128 #endif 129 130 /* others */ 131 #define SCALE_INV_ICC (2) 132 #define G_dd_SCALE (2) 133 134 #define QCC_SCALE 1 135 #define M1M2_DATA FIXP_DBL 136 #ifndef ARCH_PREFER_MULT_32x32 137 #define M1M2_CDATA FIXP_SGL 138 #define M1M2_CDATA2FX_DBL(a) FX_SGL2FX_DBL(a) 139 #define FX_DBL2M1M2_CDATA(a) FX_DBL2FX_SGL(a) 140 #else 141 #define M1M2_CDATA FIXP_DBL 142 #define M1M2_CDATA2FX_DBL(a) (a) 143 #define FX_DBL2M1M2_CDATA(a) (a) 144 #endif 145 146 #define CLIP_PROTECT_GAIN_0(x) FL2FXCONST_CFG(((x) / (float)(1 << 0))) 147 #define CLIP_PROTECT_GAIN_1(x) FL2FXCONST_CFG(((x) / (float)(1 << 1))) 148 #define CLIP_PROTECT_GAIN_2(x) FL2FXCONST_CFG(((x) / (float)(1 << 2))) 149 150 #define SF_CLD_C1C2 (8) 151 152 extern const FIXP_CFG dequantCPC__FDK[]; 153 extern const FIXP_CFG dequantICC__FDK[8]; 154 extern const FIXP_CFG dequantCLD__FDK[31]; 155 156 #define IPD_SCALE (5) 157 #define PI__IPD (FL2FXCONST_DBL(3.1415926535897932f / (float)(1 << IPD_SCALE))) 158 /* Define for PI*2 for better precision in SpatialDecApplyPhase() */ 159 #define PIx2__IPD \ 160 (FL2FXCONST_DBL(3.1415926535897932f / (float)(1 << (IPD_SCALE - 1)))) 161 162 extern const FIXP_CFG dequantIPD__FDK[16]; 163 164 extern const FIXP_CFG H11_nc[31][8]; 165 extern const FIXP_CFG H12_nc[31][8]; 166 167 extern const FIXP_DBL dequantCLD_c1[31]; 168 169 extern const FIXP_CFG BP__FDK[]; 170 extern const FIXP_CFG BP_GF__FDK[]; 171 extern const SCHAR row2channelSTP[][MAX_M2_INPUT]; 172 173 /* sac_bitdec */ 174 extern const INT samplingFreqTable[16]; 175 extern const UCHAR freqResTable[]; 176 extern const UCHAR freqResTable_LD[]; 177 extern const UCHAR tempShapeChanTable[2][8]; 178 extern const TREEPROPERTIES treePropertyTable[]; 179 180 extern const SCHAR kernels_4_to_71[MAX_HYBRID_BANDS]; 181 extern const SCHAR kernels_5_to_71[MAX_HYBRID_BANDS]; 182 extern const SCHAR kernels_7_to_71[MAX_HYBRID_BANDS]; 183 extern const SCHAR kernels_10_to_71[MAX_HYBRID_BANDS]; 184 extern const SCHAR kernels_14_to_71[MAX_HYBRID_BANDS]; 185 extern const SCHAR kernels_20_to_71[MAX_HYBRID_BANDS]; 186 extern const SCHAR kernels_28_to_71[MAX_HYBRID_BANDS]; 187 188 extern const UCHAR mapping_4_to_28[MAX_PARAMETER_BANDS]; 189 extern const UCHAR mapping_5_to_28[MAX_PARAMETER_BANDS]; 190 extern const UCHAR mapping_7_to_28[MAX_PARAMETER_BANDS]; 191 extern const UCHAR mapping_10_to_28[MAX_PARAMETER_BANDS]; 192 extern const UCHAR mapping_14_to_28[MAX_PARAMETER_BANDS]; 193 extern const UCHAR mapping_20_to_28[MAX_PARAMETER_BANDS]; 194 extern const SCHAR kernels_4_to_64[MAX_HYBRID_BANDS]; 195 extern const SCHAR kernels_5_to_64[MAX_HYBRID_BANDS]; 196 extern const SCHAR kernels_7_to_64[MAX_HYBRID_BANDS]; 197 extern const SCHAR kernels_9_to_64[MAX_HYBRID_BANDS]; 198 extern const SCHAR kernels_12_to_64[MAX_HYBRID_BANDS]; 199 extern const SCHAR kernels_15_to_64[MAX_HYBRID_BANDS]; 200 extern const SCHAR kernels_23_to_64[MAX_HYBRID_BANDS]; 201 202 extern const UCHAR mapping_15_to_23[MAX_PARAMETER_BANDS_LD]; 203 extern const UCHAR mapping_12_to_23[MAX_PARAMETER_BANDS_LD]; 204 extern const UCHAR mapping_9_to_23[MAX_PARAMETER_BANDS_LD]; 205 extern const UCHAR mapping_7_to_23[MAX_PARAMETER_BANDS_LD]; 206 extern const UCHAR mapping_5_to_23[MAX_PARAMETER_BANDS_LD]; 207 extern const UCHAR mapping_4_to_23[MAX_PARAMETER_BANDS_LD]; 208 209 extern const FIXP_CFG clipGainTable__FDK[]; 210 extern const UCHAR clipGainSFTable__FDK[]; 211 212 extern const UCHAR pbStrideTable[]; 213 extern const int smgTimeTable[]; 214 215 extern const FIXP_CFG envShapeDataTable__FDK[5][2]; 216 extern const SCHAR row2channelGES[][MAX_M2_INPUT]; 217 218 /* sac_calcM1andM2 */ 219 extern const SCHAR row2residual[][MAX_M2_INPUT]; 220 221 void SpatialDequantGetCLDValues(int index, FIXP_DBL* cu, FIXP_DBL* cl); 222 223 void SpatialDequantGetCLD2Values(int index, FIXP_DBL* x); 224 225 /* External helper functions */ 226 static inline int SacGetHybridSubbands(int qmfSubbands) { 227 return qmfSubbands - MAX_QMF_BANDS_TO_HYBRID + 10; 228 } 229 230 #endif /* SAC_ROM_H */ 231
