libFDK/include/cplx_mul.h

   1
   2 /* -----------------------------------------------------------------------------------------------------------
   3 Software License for The Fraunhofer FDK AAC Codec Library for Android
   4
   5 © Copyright  1995 - 2013 Fraunhofer-Gesellschaft zur Förderung 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
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  31 Redistribution and use in source and binary forms, with or without modification, are permitted without
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  35 your modifications thereto in source code form.
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  38 provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
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  40 modifications thereto to recipients of copies in binary form.
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  46 software or your modifications thereto.
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  56 ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
  57 respect to this software.
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  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
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  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@iis.fraunhofer.de
  82 ----------------------------------------------------------------------------------------------------------- */
  83
  84 /***************************  Fraunhofer IIS FDK Tools  **********************
  85
  86    Author(s):
  87    Description: fixed point intrinsics
  88
  89 ******************************************************************************/
  90
  91 #include "common_fix.h"
  92
  93 #if !defined(__CPLX_Mult_H__)
  94 #define __CPLX_Mult_H__
  95
  96 #if defined(__CC_ARM) || defined(__arm__) || defined(_M_ARM)    /* cppp replaced: elif */
  97 #include "arm/cplx_mul.h"
  98
  99 #elif defined(__GNUC__) && defined(__mips__)    /* cppp replaced: elif */
 100 #include "mips/cplx_mul.h"
 101
 102 #endif /* #if defined all cores: bfin, arm, etc. */
 103
 104 /* ############################################################################# */
 105
 106 /* Fallback generic implementations */
 107
 108 #if !defined(FUNCTION_cplxMultDiv2_32x16X2)
 109 #define FUNCTION_cplxMultDiv2_32x16X2
 110
 111 inline void cplxMultDiv2( FIXP_DBL *c_Re,
 112                           FIXP_DBL *c_Im,
 113                           const FIXP_DBL  a_Re,
 114                           const FIXP_DBL  a_Im,
 115                           const FIXP_SGL  b_Re,
 116                           const FIXP_SGL  b_Im)
 117 {
 118   *c_Re = fMultDiv2(a_Re,b_Re) - fMultDiv2(a_Im,b_Im);
 119   *c_Im = fMultDiv2(a_Re,b_Im) + fMultDiv2(a_Im,b_Re);
 120 }
 121 #endif
 122
 123 #if !defined(FUNCTION_cplxMultDiv2_32x16)
 124 #define FUNCTION_cplxMultDiv2_32x16
 125
 126 inline void cplxMultDiv2( FIXP_DBL *c_Re,
 127                           FIXP_DBL *c_Im,
 128                           const FIXP_DBL a_Re,
 129                           const FIXP_DBL a_Im,
 130                           const FIXP_SPK w )
 131 {
 132   cplxMultDiv2(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
 133 }
 134 #endif
 135
 136 #if !defined(FUNCTION_cplxMultAddDiv2_32x16X2)
 137 #define FUNCTION_cplxMultAddDiv2_32x16X2
 138
 139 inline void cplxMultAddDiv2( FIXP_DBL *c_Re,
 140                           FIXP_DBL *c_Im,
 141                           const FIXP_DBL  a_Re,
 142                           const FIXP_DBL  a_Im,
 143                           const FIXP_SGL  b_Re,
 144                           const FIXP_SGL  b_Im)
 145 {
 146   *c_Re += fMultDiv2(a_Re,b_Re) - fMultDiv2(a_Im,b_Im);
 147   *c_Im += fMultDiv2(a_Re,b_Im) + fMultDiv2(a_Im,b_Re);
 148 }
 149 #endif
 150
 151 #if !defined(FUNCTION_cplxMultSubDiv2_32x16X2)
 152 #define FUNCTION_cplxMultSubDiv2_32x16X2
 153
 154 inline void cplxMultSubDiv2( FIXP_DBL *c_Re,
 155                              FIXP_DBL *c_Im,
 156                              const FIXP_DBL  a_Re,
 157                              const FIXP_DBL  a_Im,
 158                              const FIXP_SGL  b_Re,
 159                              const FIXP_SGL  b_Im)
 160 {
 161   *c_Re -= fMultDiv2(a_Re,b_Re) - fMultDiv2(a_Im,b_Im);
 162   *c_Im -= fMultDiv2(a_Re,b_Im) + fMultDiv2(a_Im,b_Re);
 163 }
 164 #endif
 165
 166 #if !defined(FUNCTION_cplxMultDiv2_32x32X2)
 167 #define FUNCTION_cplxMultDiv2_32x32X2
 168
 169 inline void cplxMultDiv2( FIXP_DBL *c_Re,
 170                           FIXP_DBL *c_Im,
 171                           const FIXP_DBL  a_Re,
 172                           const FIXP_DBL  a_Im,
 173                           const FIXP_DBL  b_Re,
 174                           const FIXP_DBL  b_Im)
 175 {
 176   *c_Re = fMultDiv2(a_Re,b_Re) - fMultDiv2(a_Im,b_Im);
 177   *c_Im = fMultDiv2(a_Re,b_Im) + fMultDiv2(a_Im,b_Re);
 178 }
 179 #endif
 180
 181 #if !defined(FUNCTION_cplxMultDiv2_32x32)
 182 #define FUNCTION_cplxMultDiv2_32x32
 183
 184 inline void cplxMultDiv2( FIXP_DBL *c_Re,
 185                           FIXP_DBL *c_Im,
 186                           const FIXP_DBL  a_Re,
 187                           const FIXP_DBL  a_Im,
 188                           const FIXP_DPK  w)
 189 {
 190   cplxMultDiv2(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
 191 }
 192 #endif
 193
 194 #if !defined(FUNCTION_cplxMultSubDiv2_32x32X2)
 195 #define FUNCTION_cplxMultSubDiv2_32x32X2
 196
 197 inline void cplxMultSubDiv2( FIXP_DBL *c_Re,
 198                              FIXP_DBL *c_Im,
 199                              const FIXP_DBL  a_Re,
 200                              const FIXP_DBL  a_Im,
 201                              const FIXP_DBL  b_Re,
 202                              const FIXP_DBL  b_Im)
 203 {
 204   *c_Re -= fMultDiv2(a_Re,b_Re) - fMultDiv2(a_Im,b_Im);
 205   *c_Im -= fMultDiv2(a_Re,b_Im) + fMultDiv2(a_Im,b_Re);
 206 }
 207 #endif
 208
 209 /* ############################################################################# */
 210
 211 #if !defined(FUNCTION_cplxMult_32x16X2)
 212 #define FUNCTION_cplxMult_32x16X2
 213
 214 inline void cplxMult( FIXP_DBL *c_Re,
 215                       FIXP_DBL *c_Im,
 216                       const FIXP_DBL  a_Re,
 217                       const FIXP_DBL  a_Im,
 218                       const FIXP_SGL  b_Re,
 219                       const FIXP_SGL  b_Im)
 220 {
 221   *c_Re = fMult(a_Re,b_Re) - fMult(a_Im,b_Im);
 222   *c_Im = fMult(a_Re,b_Im) + fMult(a_Im,b_Re);
 223 }
 224 #endif
 225
 226 #if !defined(FUNCTION_cplxMult_32x16)
 227 #define FUNCTION_cplxMult_32x16
 228
 229 inline void cplxMult( FIXP_DBL *c_Re,
 230                       FIXP_DBL *c_Im,
 231                       const FIXP_DBL a_Re,
 232                       const FIXP_DBL a_Im,
 233                       const FIXP_SPK w )
 234 {
 235   cplxMult(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
 236 }
 237 #endif
 238
 239 #if !defined(FUNCTION_cplxMult_32x32X2)
 240 #define FUNCTION_cplxMult_32x32X2
 241
 242 inline void cplxMult( FIXP_DBL *c_Re,
 243                       FIXP_DBL *c_Im,
 244                       const FIXP_DBL  a_Re,
 245                       const FIXP_DBL  a_Im,
 246                       const FIXP_DBL  b_Re,
 247                       const FIXP_DBL  b_Im)
 248 {
 249   *c_Re = fMult(a_Re,b_Re) - fMult(a_Im,b_Im);
 250   *c_Im = fMult(a_Re,b_Im) + fMult(a_Im,b_Re);
 251 }
 252 #endif
 253
 254 #if !defined(FUNCTION_cplxMult_32x32)
 255 #define FUNCTION_cplxMult_32x32
 256 inline void cplxMult( FIXP_DBL *c_Re,
 257                       FIXP_DBL *c_Im,
 258                       const FIXP_DBL  a_Re,
 259                       const FIXP_DBL  a_Im,
 260                       const FIXP_DPK  w)
 261 {
 262   cplxMult(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
 263 }
 264 #endif
 265
 266 /* ############################################################################# */
 267
 268 #endif /* __CPLX_Mult_H__ */
 269