287 lines
10 KiB
C
287 lines
10 KiB
C
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/* -----------------------------------------------------------------------------------------------------------
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Software License for The Fraunhofer FDK AAC Codec Library for Android
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<EFBFBD> Copyright 1995 - 2012 Fraunhofer-Gesellschaft zur F<EFBFBD>rderung der angewandten Forschung e.V.
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All rights reserved.
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1. INTRODUCTION
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The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
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the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
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This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
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AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
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audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
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independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
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of the MPEG specifications.
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Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
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may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
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individually for the purpose of encoding or decoding bit streams in products that are compliant with
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the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
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these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
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software may already be covered under those patent licenses when it is used for those licensed purposes only.
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Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
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are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
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applications information and documentation.
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2. COPYRIGHT LICENSE
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Redistribution and use in source and binary forms, with or without modification, are permitted without
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payment of copyright license fees provided that you satisfy the following conditions:
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You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
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your modifications thereto in source code form.
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You must retain the complete text of this software license in the documentation and/or other materials
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provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
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You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
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modifications thereto to recipients of copies in binary form.
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The name of Fraunhofer may not be used to endorse or promote products derived from this library without
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prior written permission.
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You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
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software or your modifications thereto.
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Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
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and the date of any change. For modified versions of the FDK AAC Codec, the term
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"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
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"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
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3. NO PATENT LICENSE
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NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
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ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
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respect to this software.
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You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
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by appropriate patent licenses.
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4. DISCLAIMER
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This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
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"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
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of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
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including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
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or business interruption, however caused and on any theory of liability, whether in contract, strict
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liability, or tort (including negligence), arising in any way out of the use of this software, even if
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advised of the possibility of such damage.
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5. CONTACT INFORMATION
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Fraunhofer Institute for Integrated Circuits IIS
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Attention: Audio and Multimedia Departments - FDK AAC LL
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Am Wolfsmantel 33
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91058 Erlangen, Germany
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www.iis.fraunhofer.de/amm
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amm-info@iis.fraunhofer.de
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----------------------------------------------------------------------------------------------------------- */
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/*************************** Fraunhofer IIS FDK Tools **********************
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Author(s): Stefan Gewinner
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Description: fixed point multiplication
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******************************************************************************/
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#if !defined(__FIXMUL_H__)
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#define __FIXMUL_H__
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#include "FDK_archdef.h"
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#include "machine_type.h"
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#if defined(__arm__)
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#include "arm/fixmul_arm.h"
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#elif defined(__mips__) /* cppp replaced: elif */
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#include "mips/fixmul_mips.h"
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#elif defined(__x86__) /* cppp replaced: elif */
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#include "x86/fixmul_x86.h"
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#endif /* all cores */
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/*************************************************************************
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*************************************************************************
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Software fallbacks for missing functions
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**************************************************************************
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**************************************************************************/
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#if !defined(FUNCTION_fixmuldiv2_DD)
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#define FUNCTION_fixmuldiv2_DD
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#if defined(_MSC_VER) || defined(__CC_ARM) || defined(__ANALOG_EXTENSIONS__) || defined(__TI_COMPILER_VERSION__)
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#pragma message ("Extremely slow implementation of fixmuldiv2_DD !!")
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#else
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#warning Extremely slow implementation of fixmuldiv2_DD !!
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#endif
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inline LONG fixmuldiv2_DD (const LONG a, const LONG b)
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{
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return (LONG) ((((INT64)a) * b) >> 32) ;
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}
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#endif
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#if !defined(FUNCTION_fixmuldiv2BitExact_DD)
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#define FUNCTION_fixmuldiv2BitExact_DD
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#if defined(_MSC_VER) || defined(__CC_ARM) || defined(__ANALOG_EXTENSIONS__) || defined(__TI_COMPILER_VERSION__)
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#pragma message ("Extremely slow implementation of fixmuldiv2BitExact_DD !!")
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#else
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#warning Extremely slow implementation of fixmuldiv2BitExact_DD !!
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#endif
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inline LONG fixmuldiv2BitExact_DD (const LONG a, const LONG b)
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{
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return (LONG) ((((INT64)a) * b) >> 32) ;
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}
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#endif
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#if !defined(FUNCTION_fixmul_DD)
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#define FUNCTION_fixmul_DD
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inline LONG fixmul_DD (const LONG a, const LONG b)
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{ return fixmuldiv2_DD (a, b) << 1 ; }
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#endif
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#if !defined(FUNCTION_fixmulBitExact_DD)
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#define FUNCTION_fixmulBitExact_DD
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#if defined(_MSC_VER) || defined(__CC_ARM) || defined(__ANALOG_EXTENSIONS__) || defined(__TI_COMPILER_VERSION__) || defined(__XTENSA__)
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#pragma message ("Extremely slow implementation of fixmulBitExact_DD !!")
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#else
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#warning Extremely slow implementation of fixmulBitExact_DD !!
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#endif
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inline LONG fixmulBitExact_DD (const LONG a, const LONG b)
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{
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return ( (LONG) ((((INT64)a) * b) >> 32) ) << 1;
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}
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#endif
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#if !defined(FUNCTION_fixmuldiv2_SS)
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#define FUNCTION_fixmuldiv2_SS
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inline LONG fixmuldiv2_SS (const SHORT a, const SHORT b)
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{ return ((LONG)a*b); }
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#endif
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#if !defined(FUNCTION_fixmul_SS)
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#define FUNCTION_fixmul_SS
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inline LONG fixmul_SS (const SHORT a, const SHORT b)
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{ return (a*b) <<1; }
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#endif
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#if !defined(FUNCTION_fixmuldiv2_SD)
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#define FUNCTION_fixmuldiv2_SD
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inline LONG fixmuldiv2_SD (const SHORT a, const LONG b)
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#ifdef FUNCTION_fixmuldiv2_DS
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{ return fixmuldiv2_DS(b, a); }
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#else
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{ return fixmuldiv2_DD(FX_SGL2FX_DBL(a), b); }
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#endif
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#endif
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#if !defined(FUNCTION_fixmuldiv2_DS)
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#define FUNCTION_fixmuldiv2_DS
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inline LONG fixmuldiv2_DS (const LONG a, const SHORT b)
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#ifdef FUNCTION_fixmuldiv2_SD
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{ return fixmuldiv2_SD(b, a); }
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#else
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{ return fixmuldiv2_DD(a, FX_SGL2FX_DBL(b)); }
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#endif
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#endif
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#if !defined(FUNCTION_fixmuldiv2BitExact_SD)
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#define FUNCTION_fixmuldiv2BitExact_SD
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inline LONG fixmuldiv2BitExact_SD (const SHORT a, const LONG b)
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#ifdef FUNCTION_fixmuldiv2BitExact_DS
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{ return fixmuldiv2BitExact_DS(b, a); }
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#else
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{ return (LONG) ((((INT64)a) * b) >> 16) ; }
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#endif
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#endif
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#if !defined(FUNCTION_fixmuldiv2BitExact_DS)
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#define FUNCTION_fixmuldiv2BitExact_DS
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inline LONG fixmuldiv2BitExact_DS (const LONG a, const SHORT b)
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#ifdef FUNCTION_fixmuldiv2BitExact_SD
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{ return fixmuldiv2BitExact_SD(b, a); }
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#else
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{ return (LONG) ((((INT64)a) * b) >> 16) ; }
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#endif
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#endif
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#if !defined(FUNCTION_fixmul_SD)
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#define FUNCTION_fixmul_SD
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inline LONG fixmul_SD (const SHORT a, const LONG b) {
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#ifdef FUNCTION_fixmul_DS
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return fixmul_SD(b, a);
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#else
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return fixmuldiv2_SD (a, b) << 1 ;
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#endif
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}
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#endif
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#if !defined(FUNCTION_fixmul_DS)
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#define FUNCTION_fixmul_DS
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inline LONG fixmul_DS (const LONG a, const SHORT b) {
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#ifdef FUNCTION_fixmul_SD
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return fixmul_SD(b, a);
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#else
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return fixmuldiv2_DS(a, b) << 1 ;
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#endif
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}
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#endif
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#if !defined(FUNCTION_fixmulBitExact_SD)
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#define FUNCTION_fixmulBitExact_SD
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inline LONG fixmulBitExact_SD (const SHORT a, const LONG b)
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#ifdef FUNCTION_fixmulBitExact_DS
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{ return fixmulBitExact_DS(b, a); }
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#else
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{ return (LONG) (((((INT64)a) * b) >> 16) << 1); }
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#endif
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#endif
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#if !defined(FUNCTION_fixmulBitExact_DS)
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#define FUNCTION_fixmulBitExact_DS
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inline LONG fixmulBitExact_DS (const LONG a, const SHORT b)
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#ifdef FUNCTION_fixmulBitExact_SD
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{ return fixmulBitExact_SD(b, a); }
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#else
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{ return (LONG) (((((INT64)a) * b) >> 16) << 1); }
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#endif
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#endif
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#if !defined(FUNCTION_fixpow2div2_D)
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#ifdef ARCH_WA_16BITMULT
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#error Fallback for fixpow2div2_D is not 16 bit safe !
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#endif
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#define FUNCTION_fixpow2div2_D
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inline LONG fixpow2div2_D (const LONG a)
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{ return fixmuldiv2_DD(a, a); }
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#endif
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#if !defined(FUNCTION_fixpow2_D)
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#ifdef ARCH_WA_16BITMULT
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#error Fallback for fixpow2_D is not 16 bit safe !
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#endif
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#define FUNCTION_fixpow2_D
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inline LONG fixpow2_D (const LONG a)
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{ return fixpow2div2_D(a)<<1; }
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#endif
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#if !defined(FUNCTION_fixpow2div2_S)
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#define FUNCTION_fixpow2div2_S
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inline LONG fixpow2div2_S (const SHORT a)
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{ return fixmuldiv2_SS(a, a); }
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#endif
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#if !defined(FUNCTION_fixpow2_S)
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#define FUNCTION_fixpow2_S
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inline LONG fixpow2_S (const SHORT a)
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{ return fixpow2div2_S(a)<<1; }
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#endif
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#endif /* __FIXMUL_H__ */
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