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 /******************* Library for basic calculation routines ******************** 96 97 Author(s): 98 99 Description: fixed point intrinsics 100 101 *******************************************************************************/ 102 103 #if !defined(CPLX_MUL_H) 104 #define CPLX_MUL_H 105 106 #include "common_fix.h" 107 108 #if defined(__arm__) || defined(_M_ARM) 109 #include "arm/cplx_mul_arm.h" 110 111 #elif defined(__GNUC__) && defined(__mips__) && __mips_isa_rev < 6 112 #include "mips/cplx_mul_mips.h" 113 114 #endif /* #if defined all cores: bfin, arm, etc. */ 115 116 /* ############################################################################# 117 */ 118 119 /* Fallback generic implementations */ 120 121 #if !defined(FUNCTION_cplxMultDiv2_32x16X2) 122 #define FUNCTION_cplxMultDiv2_32x16X2 123 124 inline void cplxMultDiv2(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re, 125 const FIXP_DBL a_Im, const FIXP_SGL b_Re, 126 const FIXP_SGL b_Im) { 127 *c_Re = fMultDiv2(a_Re, b_Re) - fMultDiv2(a_Im, b_Im); 128 *c_Im = fMultDiv2(a_Re, b_Im) + fMultDiv2(a_Im, b_Re); 129 } 130 #endif 131 132 #if !defined(FUNCTION_cplxMultDiv2_16x16X2) 133 #define FUNCTION_cplxMultDiv2_16x16X2 134 135 inline void cplxMultDiv2(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_SGL a_Re, 136 const FIXP_SGL a_Im, const FIXP_SGL b_Re, 137 const FIXP_SGL b_Im) { 138 *c_Re = fMultDiv2(a_Re, b_Re) - fMultDiv2(a_Im, b_Im); 139 *c_Im = fMultDiv2(a_Re, b_Im) + fMultDiv2(a_Im, b_Re); 140 } 141 142 inline void cplxMultDiv2(FIXP_SGL *c_Re, FIXP_SGL *c_Im, const FIXP_SGL a_Re, 143 const FIXP_SGL a_Im, const FIXP_SGL b_Re, 144 const FIXP_SGL b_Im) { 145 *c_Re = FX_DBL2FX_SGL(fMultDiv2(a_Re, b_Re) - fMultDiv2(a_Im, b_Im)); 146 *c_Im = FX_DBL2FX_SGL(fMultDiv2(a_Re, b_Im) + fMultDiv2(a_Im, b_Re)); 147 } 148 #endif 149 150 #if !defined(FUNCTION_cplxMultDiv2_32x16) 151 #define FUNCTION_cplxMultDiv2_32x16 152 153 inline void cplxMultDiv2(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re, 154 const FIXP_DBL a_Im, const FIXP_SPK w) { 155 cplxMultDiv2(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im); 156 } 157 #endif 158 159 #if !defined(FUNCTION_cplxMultDiv2_16x16) 160 #define FUNCTION_cplxMultDiv2_16x16 161 162 inline void cplxMultDiv2(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_SGL a_Re, 163 const FIXP_SGL a_Im, const FIXP_SPK w) { 164 cplxMultDiv2(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im); 165 } 166 167 inline void cplxMultDiv2(FIXP_SGL *c_Re, FIXP_SGL *c_Im, const FIXP_SGL a_Re, 168 const FIXP_SGL a_Im, const FIXP_SPK w) { 169 cplxMultDiv2(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im); 170 } 171 #endif 172 173 #if !defined(FUNCTION_cplxMultSubDiv2_32x16X2) 174 #define FUNCTION_cplxMultSubDiv2_32x16X2 175 176 inline void cplxMultSubDiv2(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re, 177 const FIXP_DBL a_Im, const FIXP_SGL b_Re, 178 const FIXP_SGL b_Im) { 179 *c_Re -= fMultDiv2(a_Re, b_Re) - fMultDiv2(a_Im, b_Im); 180 *c_Im -= fMultDiv2(a_Re, b_Im) + fMultDiv2(a_Im, b_Re); 181 } 182 #endif 183 184 #if !defined(FUNCTION_cplxMultDiv2_32x32X2) 185 #define FUNCTION_cplxMultDiv2_32x32X2 186 187 inline void cplxMultDiv2(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re, 188 const FIXP_DBL a_Im, const FIXP_DBL b_Re, 189 const FIXP_DBL b_Im) { 190 *c_Re = fMultDiv2(a_Re, b_Re) - fMultDiv2(a_Im, b_Im); 191 *c_Im = fMultDiv2(a_Re, b_Im) + fMultDiv2(a_Im, b_Re); 192 } 193 #endif 194 195 #if !defined(FUNCTION_cplxMultDiv2_32x32) 196 #define FUNCTION_cplxMultDiv2_32x32 197 198 inline void cplxMultDiv2(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re, 199 const FIXP_DBL a_Im, const FIXP_DPK w) { 200 cplxMultDiv2(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im); 201 } 202 #endif 203 204 #if !defined(FUNCTION_cplxMultSubDiv2_32x32X2) 205 #define FUNCTION_cplxMultSubDiv2_32x32X2 206 207 inline void cplxMultSubDiv2(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re, 208 const FIXP_DBL a_Im, const FIXP_DBL b_Re, 209 const FIXP_DBL b_Im) { 210 *c_Re -= fMultDiv2(a_Re, b_Re) - fMultDiv2(a_Im, b_Im); 211 *c_Im -= fMultDiv2(a_Re, b_Im) + fMultDiv2(a_Im, b_Re); 212 } 213 #endif 214 215 /* ############################################################################# 216 */ 217 218 #if !defined(FUNCTION_cplxMult_32x16X2) 219 #define FUNCTION_cplxMult_32x16X2 220 221 inline void cplxMult(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re, 222 const FIXP_DBL a_Im, const FIXP_SGL b_Re, 223 const FIXP_SGL b_Im) { 224 *c_Re = fMult(a_Re, b_Re) - fMult(a_Im, b_Im); 225 *c_Im = fMult(a_Re, b_Im) + fMult(a_Im, b_Re); 226 } 227 inline void cplxMult(FIXP_SGL *c_Re, FIXP_SGL *c_Im, const FIXP_SGL a_Re, 228 const FIXP_SGL a_Im, const FIXP_SGL b_Re, 229 const FIXP_SGL b_Im) { 230 *c_Re = FX_DBL2FX_SGL(fMult(a_Re, b_Re) - fMult(a_Im, b_Im)); 231 *c_Im = FX_DBL2FX_SGL(fMult(a_Re, b_Im) + fMult(a_Im, b_Re)); 232 } 233 #endif 234 235 #if !defined(FUNCTION_cplxMult_32x16) 236 #define FUNCTION_cplxMult_32x16 237 238 inline void cplxMult(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re, 239 const FIXP_DBL a_Im, const FIXP_SPK w) { 240 cplxMult(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im); 241 } 242 #endif 243 244 #if !defined(FUNCTION_cplxMult_32x32X2) 245 #define FUNCTION_cplxMult_32x32X2 246 247 inline void cplxMult(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re, 248 const FIXP_DBL a_Im, const FIXP_DBL b_Re, 249 const FIXP_DBL b_Im) { 250 *c_Re = fMult(a_Re, b_Re) - fMult(a_Im, b_Im); 251 *c_Im = fMult(a_Re, b_Im) + fMult(a_Im, b_Re); 252 } 253 #endif 254 255 #if !defined(FUNCTION_cplxMult_32x32) 256 #define FUNCTION_cplxMult_32x32 257 inline void cplxMult(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re, 258 const FIXP_DBL a_Im, const FIXP_DPK w) { 259 cplxMult(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im); 260 } 261 #endif 262 263 /* ############################################################################# 264 */ 265 266 #endif /* CPLX_MUL_H */ 267
