Home | History | Annotate | Download | only in include
      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