1 2 /* ----------------------------------------------------------------------------------------------------------- 3 Software License for The Fraunhofer FDK AAC Codec Library for Android 4 5 Copyright 1995 - 2012 Fraunhofer-Gesellschaft zur Frderung der angewandten Forschung e.V. 6 All rights reserved. 7 8 1. INTRODUCTION 9 The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements 10 the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. 11 This FDK AAC Codec software is intended to be used on a wide variety of Android devices. 12 13 AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual 14 audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by 15 independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part 16 of the MPEG specifications. 17 18 Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) 19 may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners 20 individually for the purpose of encoding or decoding bit streams in products that are compliant with 21 the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license 22 these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec 23 software may already be covered under those patent licenses when it is used for those licensed purposes only. 24 25 Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, 26 are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional 27 applications information and documentation. 28 29 2. COPYRIGHT LICENSE 30 31 Redistribution and use in source and binary forms, with or without modification, are permitted without 32 payment of copyright license fees provided that you satisfy the following conditions: 33 34 You must retain the complete text of this software license in redistributions of the FDK AAC Codec or 35 your modifications thereto in source code form. 36 37 You must retain the complete text of this software license in the documentation and/or other materials 38 provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. 39 You must make available free of charge copies of the complete source code of the FDK AAC Codec and your 40 modifications thereto to recipients of copies in binary form. 41 42 The name of Fraunhofer may not be used to endorse or promote products derived from this library without 43 prior written permission. 44 45 You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec 46 software or your modifications thereto. 47 48 Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software 49 and the date of any change. For modified versions of the FDK AAC Codec, the term 50 "Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term 51 "Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android." 52 53 3. NO PATENT LICENSE 54 55 NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, 56 ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with 57 respect to this software. 58 59 You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized 60 by appropriate patent licenses. 61 62 4. DISCLAIMER 63 64 This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors 65 "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties 66 of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 67 CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, 68 including but not limited to procurement of substitute goods or services; loss of use, data, or profits, 69 or business interruption, however caused and on any theory of liability, whether in contract, strict 70 liability, or tort (including negligence), arising in any way out of the use of this software, even if 71 advised of the possibility of such damage. 72 73 5. CONTACT INFORMATION 74 75 Fraunhofer Institute for Integrated Circuits IIS 76 Attention: Audio and Multimedia Departments - FDK AAC LL 77 Am Wolfsmantel 33 78 91058 Erlangen, Germany 79 80 www.iis.fraunhofer.de/amm 81 amm-info (at) iis.fraunhofer.de 82 ----------------------------------------------------------------------------------------------------------- */ 83 84 /*************************** Fraunhofer IIS FDK Tools ********************** 85 86 Author(s): Stefan Gewinner 87 Description: fixed point multiplication 88 89 ******************************************************************************/ 90 91 #if !defined(__FIXMUL_H__) 92 #define __FIXMUL_H__ 93 94 #include "FDK_archdef.h" 95 #include "machine_type.h" 96 97 98 #if defined(__arm__) 99 #include "arm/fixmul_arm.h" 100 101 #elif defined(__mips__) /* cppp replaced: elif */ 102 #include "mips/fixmul_mips.h" 103 104 #elif defined(__x86__) /* cppp replaced: elif */ 105 #include "x86/fixmul_x86.h" 106 107 #endif /* all cores */ 108 109 /************************************************************************* 110 ************************************************************************* 111 Software fallbacks for missing functions 112 ************************************************************************** 113 **************************************************************************/ 114 115 #if !defined(FUNCTION_fixmuldiv2_DD) 116 #define FUNCTION_fixmuldiv2_DD 117 #if defined(_MSC_VER) || defined(__CC_ARM) || defined(__ANALOG_EXTENSIONS__) || defined(__TI_COMPILER_VERSION__) 118 #pragma message ("Extremely slow implementation of fixmuldiv2_DD !!") 119 #else 120 #warning Extremely slow implementation of fixmuldiv2_DD !! 121 #endif 122 inline LONG fixmuldiv2_DD (const LONG a, const LONG b) 123 { 124 return (LONG) ((((INT64)a) * b) >> 32) ; 125 } 126 #endif 127 128 #if !defined(FUNCTION_fixmuldiv2BitExact_DD) 129 #define FUNCTION_fixmuldiv2BitExact_DD 130 #if defined(_MSC_VER) || defined(__CC_ARM) || defined(__ANALOG_EXTENSIONS__) || defined(__TI_COMPILER_VERSION__) 131 #pragma message ("Extremely slow implementation of fixmuldiv2BitExact_DD !!") 132 #else 133 #warning Extremely slow implementation of fixmuldiv2BitExact_DD !! 134 #endif 135 inline LONG fixmuldiv2BitExact_DD (const LONG a, const LONG b) 136 { 137 return (LONG) ((((INT64)a) * b) >> 32) ; 138 } 139 #endif 140 141 #if !defined(FUNCTION_fixmul_DD) 142 #define FUNCTION_fixmul_DD 143 inline LONG fixmul_DD (const LONG a, const LONG b) 144 { return fixmuldiv2_DD (a, b) << 1 ; } 145 #endif 146 147 #if !defined(FUNCTION_fixmulBitExact_DD) 148 #define FUNCTION_fixmulBitExact_DD 149 #if defined(_MSC_VER) || defined(__CC_ARM) || defined(__ANALOG_EXTENSIONS__) || defined(__TI_COMPILER_VERSION__) || defined(__XTENSA__) 150 #pragma message ("Extremely slow implementation of fixmulBitExact_DD !!") 151 #else 152 #warning Extremely slow implementation of fixmulBitExact_DD !! 153 #endif 154 inline LONG fixmulBitExact_DD (const LONG a, const LONG b) 155 { 156 return ( (LONG) ((((INT64)a) * b) >> 32) ) << 1; 157 } 158 #endif 159 160 #if !defined(FUNCTION_fixmuldiv2_SS) 161 #define FUNCTION_fixmuldiv2_SS 162 inline LONG fixmuldiv2_SS (const SHORT a, const SHORT b) 163 { return ((LONG)a*b); } 164 #endif 165 166 #if !defined(FUNCTION_fixmul_SS) 167 #define FUNCTION_fixmul_SS 168 inline LONG fixmul_SS (const SHORT a, const SHORT b) 169 { return (a*b) <<1; } 170 #endif 171 172 #if !defined(FUNCTION_fixmuldiv2_SD) 173 #define FUNCTION_fixmuldiv2_SD 174 inline LONG fixmuldiv2_SD (const SHORT a, const LONG b) 175 #ifdef FUNCTION_fixmuldiv2_DS 176 { return fixmuldiv2_DS(b, a); } 177 #else 178 { return fixmuldiv2_DD(FX_SGL2FX_DBL(a), b); } 179 #endif 180 #endif 181 182 #if !defined(FUNCTION_fixmuldiv2_DS) 183 #define FUNCTION_fixmuldiv2_DS 184 inline LONG fixmuldiv2_DS (const LONG a, const SHORT b) 185 #ifdef FUNCTION_fixmuldiv2_SD 186 { return fixmuldiv2_SD(b, a); } 187 #else 188 { return fixmuldiv2_DD(a, FX_SGL2FX_DBL(b)); } 189 #endif 190 #endif 191 192 #if !defined(FUNCTION_fixmuldiv2BitExact_SD) 193 #define FUNCTION_fixmuldiv2BitExact_SD 194 inline LONG fixmuldiv2BitExact_SD (const SHORT a, const LONG b) 195 #ifdef FUNCTION_fixmuldiv2BitExact_DS 196 { return fixmuldiv2BitExact_DS(b, a); } 197 #else 198 { return (LONG) ((((INT64)a) * b) >> 16) ; } 199 #endif 200 #endif 201 202 #if !defined(FUNCTION_fixmuldiv2BitExact_DS) 203 #define FUNCTION_fixmuldiv2BitExact_DS 204 inline LONG fixmuldiv2BitExact_DS (const LONG a, const SHORT b) 205 #ifdef FUNCTION_fixmuldiv2BitExact_SD 206 { return fixmuldiv2BitExact_SD(b, a); } 207 #else 208 { return (LONG) ((((INT64)a) * b) >> 16) ; } 209 #endif 210 #endif 211 212 #if !defined(FUNCTION_fixmul_SD) 213 #define FUNCTION_fixmul_SD 214 inline LONG fixmul_SD (const SHORT a, const LONG b) { 215 #ifdef FUNCTION_fixmul_DS 216 return fixmul_SD(b, a); 217 #else 218 return fixmuldiv2_SD (a, b) << 1 ; 219 #endif 220 } 221 #endif 222 223 #if !defined(FUNCTION_fixmul_DS) 224 #define FUNCTION_fixmul_DS 225 inline LONG fixmul_DS (const LONG a, const SHORT b) { 226 #ifdef FUNCTION_fixmul_SD 227 return fixmul_SD(b, a); 228 #else 229 return fixmuldiv2_DS(a, b) << 1 ; 230 #endif 231 } 232 #endif 233 234 #if !defined(FUNCTION_fixmulBitExact_SD) 235 #define FUNCTION_fixmulBitExact_SD 236 inline LONG fixmulBitExact_SD (const SHORT a, const LONG b) 237 #ifdef FUNCTION_fixmulBitExact_DS 238 { return fixmulBitExact_DS(b, a); } 239 #else 240 { return (LONG) (((((INT64)a) * b) >> 16) << 1); } 241 #endif 242 #endif 243 244 #if !defined(FUNCTION_fixmulBitExact_DS) 245 #define FUNCTION_fixmulBitExact_DS 246 inline LONG fixmulBitExact_DS (const LONG a, const SHORT b) 247 #ifdef FUNCTION_fixmulBitExact_SD 248 { return fixmulBitExact_SD(b, a); } 249 #else 250 { return (LONG) (((((INT64)a) * b) >> 16) << 1); } 251 #endif 252 #endif 253 254 255 #if !defined(FUNCTION_fixpow2div2_D) 256 #ifdef ARCH_WA_16BITMULT 257 #error Fallback for fixpow2div2_D is not 16 bit safe ! 258 #endif 259 #define FUNCTION_fixpow2div2_D 260 inline LONG fixpow2div2_D (const LONG a) 261 { return fixmuldiv2_DD(a, a); } 262 #endif 263 264 #if !defined(FUNCTION_fixpow2_D) 265 #ifdef ARCH_WA_16BITMULT 266 #error Fallback for fixpow2_D is not 16 bit safe ! 267 #endif 268 #define FUNCTION_fixpow2_D 269 inline LONG fixpow2_D (const LONG a) 270 { return fixpow2div2_D(a)<<1; } 271 #endif 272 273 #if !defined(FUNCTION_fixpow2div2_S) 274 #define FUNCTION_fixpow2div2_S 275 inline LONG fixpow2div2_S (const SHORT a) 276 { return fixmuldiv2_SS(a, a); } 277 #endif 278 279 #if !defined(FUNCTION_fixpow2_S) 280 #define FUNCTION_fixpow2_S 281 inline LONG fixpow2_S (const SHORT a) 282 { return fixpow2div2_S(a)<<1; } 283 #endif 284 285 286 #endif /* __FIXMUL_H__ */ 287
