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Diffstat (limited to 'libFDK/include/fixmul.h')
| -rw-r--r-- | libFDK/include/fixmul.h | 267 |
1 files changed, 138 insertions, 129 deletions
diff --git a/libFDK/include/fixmul.h b/libFDK/include/fixmul.h index ea4bc6c..a51ca0c 100644 --- a/libFDK/include/fixmul.h +++ b/libFDK/include/fixmul.h @@ -1,74 +1,85 @@ - -/* ----------------------------------------------------------------------------------------------------------- +/* ----------------------------------------------------------------------------- Software License for The Fraunhofer FDK AAC Codec Library for Android -© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. - All rights reserved. +© Copyright 1995 - 2018 Fraunhofer-Gesellschaft zur Förderung der angewandten +Forschung e.V. All rights reserved. 1. INTRODUCTION -The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements -the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. -This FDK AAC Codec software is intended to be used on a wide variety of Android devices. - -AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual -audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by -independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part -of the MPEG specifications. - -Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) -may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners -individually for the purpose of encoding or decoding bit streams in products that are compliant with -the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license -these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec -software may already be covered under those patent licenses when it is used for those licensed purposes only. - -Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, -are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional -applications information and documentation. +The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software +that implements the MPEG Advanced Audio Coding ("AAC") encoding and decoding +scheme for digital audio. This FDK AAC Codec software is intended to be used on +a wide variety of Android devices. + +AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient +general perceptual audio codecs. AAC-ELD is considered the best-performing +full-bandwidth communications codec by independent studies and is widely +deployed. AAC has been standardized by ISO and IEC as part of the MPEG +specifications. + +Patent licenses for necessary patent claims for the FDK AAC Codec (including +those of Fraunhofer) may be obtained through Via Licensing +(www.vialicensing.com) or through the respective patent owners individually for +the purpose of encoding or decoding bit streams in products that are compliant +with the ISO/IEC MPEG audio standards. Please note that most manufacturers of +Android devices already license these patent claims through Via Licensing or +directly from the patent owners, and therefore FDK AAC Codec software may +already be covered under those patent licenses when it is used for those +licensed purposes only. + +Commercially-licensed AAC software libraries, including floating-point versions +with enhanced sound quality, are also available from Fraunhofer. Users are +encouraged to check the Fraunhofer website for additional applications +information and documentation. 2. COPYRIGHT LICENSE -Redistribution and use in source and binary forms, with or without modification, are permitted without -payment of copyright license fees provided that you satisfy the following conditions: +Redistribution and use in source and binary forms, with or without modification, +are permitted without payment of copyright license fees provided that you +satisfy the following conditions: -You must retain the complete text of this software license in redistributions of the FDK AAC Codec or -your modifications thereto in source code form. +You must retain the complete text of this software license in redistributions of +the FDK AAC Codec or your modifications thereto in source code form. -You must retain the complete text of this software license in the documentation and/or other materials -provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. -You must make available free of charge copies of the complete source code of the FDK AAC Codec and your +You must retain the complete text of this software license in the documentation +and/or other materials provided with redistributions of the FDK AAC Codec or +your modifications thereto in binary form. You must make available free of +charge copies of the complete source code of the FDK AAC Codec and your modifications thereto to recipients of copies in binary form. -The name of Fraunhofer may not be used to endorse or promote products derived from this library without -prior written permission. +The name of Fraunhofer may not be used to endorse or promote products derived +from this library without prior written permission. -You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec -software or your modifications thereto. +You may not charge copyright license fees for anyone to use, copy or distribute +the FDK AAC Codec software or your modifications thereto. -Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software -and the date of any change. For modified versions of the FDK AAC Codec, the term -"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term -"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android." +Your modified versions of the FDK AAC Codec must carry prominent notices stating +that you changed the software and the date of any change. For modified versions +of the FDK AAC Codec, the term "Fraunhofer FDK AAC Codec Library for Android" +must be replaced by the term "Third-Party Modified Version of the Fraunhofer FDK +AAC Codec Library for Android." 3. NO PATENT LICENSE -NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, -ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with -respect to this software. +NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without +limitation the patents of Fraunhofer, ARE GRANTED BY THIS SOFTWARE LICENSE. +Fraunhofer provides no warranty of patent non-infringement with respect to this +software. -You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized -by appropriate patent licenses. +You may use this FDK AAC Codec software or modifications thereto only for +purposes that are authorized by appropriate patent licenses. 4. DISCLAIMER -This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors -"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties -of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR -CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, -including but not limited to procurement of substitute goods or services; loss of use, data, or profits, -or business interruption, however caused and on any theory of liability, whether in contract, strict -liability, or tort (including negligence), arising in any way out of the use of this software, even if -advised of the possibility of such damage. +This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright +holders and contributors "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, +including but not limited to the implied warranties of merchantability and +fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR +CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, +or consequential damages, including but not limited to procurement of substitute +goods or services; loss of use, data, or profits, or business interruption, +however caused and on any theory of liability, whether in contract, strict +liability, or tort (including negligence), arising in any way out of the use of +this software, even if advised of the possibility of such damage. 5. CONTACT INFORMATION @@ -79,29 +90,29 @@ Am Wolfsmantel 33 www.iis.fraunhofer.de/amm amm-info@iis.fraunhofer.de ------------------------------------------------------------------------------------------------------------ */ +----------------------------------------------------------------------------- */ -/*************************** Fraunhofer IIS FDK Tools ********************** +/******************* Library for basic calculation routines ******************** Author(s): Stefan Gewinner + Description: fixed point multiplication -******************************************************************************/ +*******************************************************************************/ -#if !defined(__FIXMUL_H__) -#define __FIXMUL_H__ +#if !defined(FIXMUL_H) +#define FIXMUL_H #include "FDK_archdef.h" #include "machine_type.h" - #if defined(__arm__) #include "arm/fixmul_arm.h" -#elif defined(__mips__) /* cppp replaced: elif */ +#elif defined(__mips__) #include "mips/fixmul_mips.h" -#elif defined(__x86__) /* cppp replaced: elif */ +#elif defined(__x86__) #include "x86/fixmul_x86.h" #endif /* all cores */ @@ -114,173 +125,171 @@ amm-info@iis.fraunhofer.de #if !defined(FUNCTION_fixmuldiv2_DD) #define FUNCTION_fixmuldiv2_DD -#if defined(_MSC_VER) || defined(__CC_ARM) || defined(__ANALOG_EXTENSIONS__) || defined(__TI_COMPILER_VERSION__) -#pragma message ("Extremely slow implementation of fixmuldiv2_DD !!") -#else -#warning Extremely slow implementation of fixmuldiv2_DD !! -#endif -inline LONG fixmuldiv2_DD (const LONG a, const LONG b) -{ - return (LONG) ((((INT64)a) * b) >> 32) ; +inline LONG fixmuldiv2_DD(const LONG a, const LONG b) { + return (LONG)((((INT64)a) * b) >> 32); } #endif #if !defined(FUNCTION_fixmuldiv2BitExact_DD) #define FUNCTION_fixmuldiv2BitExact_DD -#if defined(_MSC_VER) || defined(__CC_ARM) || defined(__ANALOG_EXTENSIONS__) || defined(__TI_COMPILER_VERSION__) -#pragma message ("Extremely slow implementation of fixmuldiv2BitExact_DD !!") -#else -#warning Extremely slow implementation of fixmuldiv2BitExact_DD !! -#endif -inline LONG fixmuldiv2BitExact_DD (const LONG a, const LONG b) -{ - return (LONG) ((((INT64)a) * b) >> 32) ; +inline LONG fixmuldiv2BitExact_DD(const LONG a, const LONG b) { + return (LONG)((((INT64)a) * b) >> 32); } #endif #if !defined(FUNCTION_fixmul_DD) #define FUNCTION_fixmul_DD -inline LONG fixmul_DD (const LONG a, const LONG b) - { return fixmuldiv2_DD (a, b) << 1 ; } +inline LONG fixmul_DD(const LONG a, const LONG b) { + return fixmuldiv2_DD(a, b) << 1; +} #endif #if !defined(FUNCTION_fixmulBitExact_DD) #define FUNCTION_fixmulBitExact_DD -#if defined(_MSC_VER) || defined(__CC_ARM) || defined(__ANALOG_EXTENSIONS__) || defined(__TI_COMPILER_VERSION__) || defined(__XTENSA__) -#pragma message ("Extremely slow implementation of fixmulBitExact_DD !!") -#else -#warning Extremely slow implementation of fixmulBitExact_DD !! -#endif -inline LONG fixmulBitExact_DD (const LONG a, const LONG b) -{ - return ( (LONG) ((((INT64)a) * b) >> 32) ) << 1; +inline LONG fixmulBitExact_DD(const LONG a, const LONG b) { + return ((LONG)((((INT64)a) * b) >> 32)) << 1; } #endif #if !defined(FUNCTION_fixmuldiv2_SS) #define FUNCTION_fixmuldiv2_SS -inline LONG fixmuldiv2_SS (const SHORT a, const SHORT b) - { return ((LONG)a*b); } +inline LONG fixmuldiv2_SS(const SHORT a, const SHORT b) { + return ((LONG)a * b); +} #endif #if !defined(FUNCTION_fixmul_SS) #define FUNCTION_fixmul_SS -inline LONG fixmul_SS (const SHORT a, const SHORT b) - { return (a*b) <<1; } +inline LONG fixmul_SS(const SHORT a, const SHORT b) { return (a * b) << 1; } #endif #if !defined(FUNCTION_fixmuldiv2_SD) #define FUNCTION_fixmuldiv2_SD -inline LONG fixmuldiv2_SD (const SHORT a, const LONG b) +inline LONG fixmuldiv2_SD(const SHORT a, const LONG b) #ifdef FUNCTION_fixmuldiv2_DS - { return fixmuldiv2_DS(b, a); } +{ + return fixmuldiv2_DS(b, a); +} #else - { return fixmuldiv2_DD(FX_SGL2FX_DBL(a), b); } +{ + return fixmuldiv2_DD(FX_SGL2FX_DBL(a), b); +} #endif #endif #if !defined(FUNCTION_fixmuldiv2_DS) #define FUNCTION_fixmuldiv2_DS -inline LONG fixmuldiv2_DS (const LONG a, const SHORT b) +inline LONG fixmuldiv2_DS(const LONG a, const SHORT b) #ifdef FUNCTION_fixmuldiv2_SD - { return fixmuldiv2_SD(b, a); } +{ + return fixmuldiv2_SD(b, a); +} #else - { return fixmuldiv2_DD(a, FX_SGL2FX_DBL(b)); } +{ + return fixmuldiv2_DD(a, FX_SGL2FX_DBL(b)); +} #endif #endif #if !defined(FUNCTION_fixmuldiv2BitExact_SD) #define FUNCTION_fixmuldiv2BitExact_SD -inline LONG fixmuldiv2BitExact_SD (const SHORT a, const LONG b) +inline LONG fixmuldiv2BitExact_SD(const SHORT a, const LONG b) #ifdef FUNCTION_fixmuldiv2BitExact_DS - { return fixmuldiv2BitExact_DS(b, a); } +{ + return fixmuldiv2BitExact_DS(b, a); +} #else - { return (LONG) ((((INT64)a) * b) >> 16) ; } +{ + return (LONG)((((INT64)a) * b) >> 16); +} #endif #endif #if !defined(FUNCTION_fixmuldiv2BitExact_DS) #define FUNCTION_fixmuldiv2BitExact_DS -inline LONG fixmuldiv2BitExact_DS (const LONG a, const SHORT b) +inline LONG fixmuldiv2BitExact_DS(const LONG a, const SHORT b) #ifdef FUNCTION_fixmuldiv2BitExact_SD - { return fixmuldiv2BitExact_SD(b, a); } +{ + return fixmuldiv2BitExact_SD(b, a); +} #else - { return (LONG) ((((INT64)a) * b) >> 16) ; } +{ + return (LONG)((((INT64)a) * b) >> 16); +} #endif #endif #if !defined(FUNCTION_fixmul_SD) #define FUNCTION_fixmul_SD -inline LONG fixmul_SD (const SHORT a, const LONG b) { +inline LONG fixmul_SD(const SHORT a, const LONG b) { #ifdef FUNCTION_fixmul_DS - return fixmul_SD(b, a); + return fixmul_DS(b, a); #else - return fixmuldiv2_SD (a, b) << 1 ; + return fixmuldiv2_SD(a, b) << 1; #endif } #endif #if !defined(FUNCTION_fixmul_DS) #define FUNCTION_fixmul_DS -inline LONG fixmul_DS (const LONG a, const SHORT b) { +inline LONG fixmul_DS(const LONG a, const SHORT b) { #ifdef FUNCTION_fixmul_SD return fixmul_SD(b, a); #else - return fixmuldiv2_DS(a, b) << 1 ; + return fixmuldiv2_DS(a, b) << 1; #endif } #endif #if !defined(FUNCTION_fixmulBitExact_SD) #define FUNCTION_fixmulBitExact_SD -inline LONG fixmulBitExact_SD (const SHORT a, const LONG b) +inline LONG fixmulBitExact_SD(const SHORT a, const LONG b) #ifdef FUNCTION_fixmulBitExact_DS - { return fixmulBitExact_DS(b, a); } +{ + return fixmulBitExact_DS(b, a); +} #else - { return (LONG) (((((INT64)a) * b) >> 16) << 1); } +{ + return (LONG)(((((INT64)a) * b) >> 16) << 1); +} #endif #endif #if !defined(FUNCTION_fixmulBitExact_DS) #define FUNCTION_fixmulBitExact_DS -inline LONG fixmulBitExact_DS (const LONG a, const SHORT b) +inline LONG fixmulBitExact_DS(const LONG a, const SHORT b) #ifdef FUNCTION_fixmulBitExact_SD - { return fixmulBitExact_SD(b, a); } +{ + return fixmulBitExact_SD(b, a); +} #else - { return (LONG) (((((INT64)a) * b) >> 16) << 1); } +{ + return (LONG)(((((INT64)a) * b) >> 16) << 1); +} #endif #endif - #if !defined(FUNCTION_fixpow2div2_D) -#ifdef ARCH_WA_16BITMULT -#error Fallback for fixpow2div2_D is not 16 bit safe ! -#endif #define FUNCTION_fixpow2div2_D -inline LONG fixpow2div2_D (const LONG a) - { return fixmuldiv2_DD(a, a); } +inline LONG fixpow2div2_D(const LONG a) { return fixmuldiv2_DD(a, a); } #endif #if !defined(FUNCTION_fixpow2_D) -#ifdef ARCH_WA_16BITMULT -#error Fallback for fixpow2_D is not 16 bit safe ! -#endif #define FUNCTION_fixpow2_D -inline LONG fixpow2_D (const LONG a) - { return fixpow2div2_D(a)<<1; } +inline LONG fixpow2_D(const LONG a) { return fixpow2div2_D(a) << 1; } #endif #if !defined(FUNCTION_fixpow2div2_S) #define FUNCTION_fixpow2div2_S -inline LONG fixpow2div2_S (const SHORT a) - { return fixmuldiv2_SS(a, a); } +inline LONG fixpow2div2_S(const SHORT a) { return fixmuldiv2_SS(a, a); } #endif #if !defined(FUNCTION_fixpow2_S) #define FUNCTION_fixpow2_S -inline LONG fixpow2_S (const SHORT a) - { return fixpow2div2_S(a)<<1; } +inline LONG fixpow2_S(const SHORT a) { + LONG result = fixpow2div2_S(a) << 1; + return result ^ (result >> 31); +} #endif - -#endif /* __FIXMUL_H__ */ +#endif /* FIXMUL_H */ |