mirror of https://github.com/mstorsjo/fdk-aac.git
260 lines
9.0 KiB
C
260 lines
9.0 KiB
C
/* -----------------------------------------------------------------------------
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Software License for The Fraunhofer FDK AAC Codec Library for Android
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© Copyright 1995 - 2018 Fraunhofer-Gesellschaft zur Förderung der angewandten
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Forschung e.V. 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
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that implements the MPEG Advanced Audio Coding ("AAC") encoding and decoding
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scheme for digital audio. This FDK AAC Codec software is intended to be used on
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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
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general perceptual audio codecs. AAC-ELD is considered the best-performing
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full-bandwidth communications codec by independent studies and is widely
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deployed. AAC has been standardized by ISO and IEC as part of the MPEG
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specifications.
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Patent licenses for necessary patent claims for the FDK AAC Codec (including
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those of Fraunhofer) may be obtained through Via Licensing
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(www.vialicensing.com) or through the respective patent owners individually for
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the purpose of encoding or decoding bit streams in products that are compliant
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with the ISO/IEC MPEG audio standards. Please note that most manufacturers of
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Android devices already license these patent claims through Via Licensing or
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directly from the patent owners, and therefore FDK AAC Codec software may
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already be covered under those patent licenses when it is used for those
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licensed purposes only.
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Commercially-licensed AAC software libraries, including floating-point versions
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with enhanced sound quality, are also available from Fraunhofer. Users are
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encouraged to check the Fraunhofer website for additional applications
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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,
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are permitted without payment of copyright license fees provided that you
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satisfy the following conditions:
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You must retain the complete text of this software license in redistributions of
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the FDK AAC Codec or your modifications thereto in source code form.
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You must retain the complete text of this software license in the documentation
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and/or other materials provided with redistributions of the FDK AAC Codec or
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your modifications thereto in binary form. You must make available free of
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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
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from this library without prior written permission.
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You may not charge copyright license fees for anyone to use, copy or distribute
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the FDK AAC Codec software or your modifications thereto.
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Your modified versions of the FDK AAC Codec must carry prominent notices stating
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that you changed the software and the date of any change. For modified versions
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of the FDK AAC Codec, the term "Fraunhofer FDK AAC Codec Library for Android"
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must be replaced by the term "Third-Party Modified Version of the Fraunhofer FDK
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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
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limitation the patents of Fraunhofer, ARE GRANTED BY THIS SOFTWARE LICENSE.
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Fraunhofer provides no warranty of patent non-infringement with respect to this
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software.
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You may use this FDK AAC Codec software or modifications thereto only for
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purposes that are authorized 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
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holders and contributors "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,
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including but not limited to the implied warranties of merchantability and
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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,
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or consequential damages, including but not limited to procurement of substitute
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goods or services; loss of use, data, or profits, or business interruption,
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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
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this software, even if 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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/******************* Library for basic calculation routines ********************
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Author(s):
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Description:
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*******************************************************************************/
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#ifndef FDK_ARCHDEF_H
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#define FDK_ARCHDEF_H
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/* Unify some few toolchain specific defines to avoid having large "or" macro
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* contraptions all over the source code. */
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/* Use single macro (the GCC built in macro) for architecture identification
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* independent of the particular toolchain */
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#if defined(__i386__) || defined(__i486__) || defined(__i586__) || \
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defined(__i686__) || (defined(_MSC_VER) && defined(_M_IX86)) || \
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(defined(_MSC_VER) && defined(_M_X64)) || defined(__x86_64__)
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#define __x86__
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#endif
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#if defined(_M_ARM) && !defined(__arm__) || defined(__aarch64__)
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#define __arm__
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#endif
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#if (__TARGET_ARCH_ARM == 5) || defined(__TARGET_FEATURE_DSPMUL) || \
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(_M_ARM == 5) || defined(__ARM_ARCH_5TEJ__) || defined(__ARM_ARCH_7EM__)
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/* Define __ARM_ARCH_5TE__ if armv5te features are supported */
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#define __ARM_ARCH_5TE__
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#endif
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#if (__TARGET_ARCH_ARM == 6) || defined(__ARM_ARCH_6J__) || \
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defined(__ARM_ARCH_6ZK__)
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/* Define __ARM_ARCH_6__ if the armv6 intructions are being supported. */
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#define __ARM_ARCH_5TE__
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#define __ARM_ARCH_6__
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#endif
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#if defined(__TARGET_ARCH_7_R) || defined(__ARM_ARCH_7R__)
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/* Define __ARM_ARCH_7_A__ if the armv7 intructions are being supported. */
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#define __ARM_ARCH_5TE__
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#define __ARM_ARCH_6__
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#define __ARM_ARCH_7_R__
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#endif
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#if defined(__TARGET_ARCH_7_A) || defined(__ARM_ARCH_7A__) || \
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((__ARM_ARCH == 8) && (__ARM_32BIT_STATE == 1))
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/* Define __ARM_ARCH_7_A__ if the armv7 intructions are being supported. */
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#define __ARM_ARCH_5TE__
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#define __ARM_ARCH_6__
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#define __ARM_ARCH_7_A__
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#endif
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#if defined(__TARGET_ARCH_7_M) || defined(__ARM_ARCH_7_M__)
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/* Define __ARM_ARCH_7M__ if the ARMv7-M instructions are being supported, e.g.
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* Cortex-M3. */
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#define __ARM_ARCH_7M__
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#endif
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#if defined(__TARGET_ARCH_7E_M) || defined(__ARM_ARCH_7E_M__)
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/* Define __ARM_ARCH_7EM__ if the ARMv7-ME instructions are being supported,
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* e.g. Cortex-M4. */
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#define __ARM_ARCH_7EM__
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#endif
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#if defined(__aarch64__)
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#define __ARM_ARCH_8__
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#endif
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#ifdef _M_ARM
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#include "cmnintrin.h"
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#include "armintr.h"
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#endif
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/* Define preferred Multiplication type */
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#if defined(__mips__)
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#define ARCH_PREFER_MULT_16x16
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#undef SINETABLE_16BIT
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#undef POW2COEFF_16BIT
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#undef LDCOEFF_16BIT
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#undef WINDOWTABLE_16BIT
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#elif defined(__arm__) && defined(__ARM_ARCH_8__)
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#define ARCH_PREFER_MULT_32x16
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#define SINETABLE_16BIT
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#define POW2COEFF_16BIT
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#define LDCOEFF_16BIT
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#define WINDOWTABLE_16BIT
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#elif defined(__arm__) && defined(__ARM_ARCH_5TE__)
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#define ARCH_PREFER_MULT_32x16
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#define SINETABLE_16BIT
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#define POW2COEFF_16BIT
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#define LDCOEFF_16BIT
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#define WINDOWTABLE_16BIT
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#elif defined(__arm__) && defined(__ARM_ARCH_7M__)
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#define ARCH_PREFER_MULT_32x16
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#define SINETABLE_16BIT
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#define POW2COEFF_16BIT
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#define LDCOEFF_16BIT
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#define WINDOWTABLE_16BIT
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#elif defined(__arm__) && defined(__ARM_ARCH_7EM__)
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#define ARCH_PREFER_MULT_32x32
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#define ARCH_PREFER_MULT_32x16
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#define SINETABLE_16BIT
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#define POW2COEFF_16BIT
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#define LDCOEFF_16BIT
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#define WINDOWTABLE_16BIT
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#elif defined(__arm__) && !defined(__ARM_ARCH_5TE__)
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#define ARCH_PREFER_MULT_16x16
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#undef SINETABLE_16BIT
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#undef WINDOWTABLE_16BIT
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#undef POW2COEFF_16BIT
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#undef LDCOEFF_16BIT
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#elif defined(__x86__)
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#define ARCH_PREFER_MULT_32x16
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#define SINETABLE_16BIT
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#define WINDOWTABLE_16BIT
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#define POW2COEFF_16BIT
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#define LDCOEFF_16BIT
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#else
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#warning >>>> Please set architecture characterization defines for your platform (FDK_HIGH_PERFORMANCE)! <<<<
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#endif /* Architecture switches */
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#ifdef SINETABLE_16BIT
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#define FIXP_STB FIXP_SGL /* STB sinus Tab used in transformation */
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#define FIXP_STP FIXP_SPK
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#define STC(a) (FX_DBL2FXCONST_SGL(a))
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#else
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#define FIXP_STB FIXP_DBL
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#define FIXP_STP FIXP_DPK
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#define STC(a) ((FIXP_DBL)(LONG)(a))
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#endif /* defined(SINETABLE_16BIT) */
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#define STCP(cos, sin) \
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{ \
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{ STC(cos), STC(sin) } \
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}
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#ifdef WINDOWTABLE_16BIT
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#define FIXP_WTB FIXP_SGL /* single FIXP_SGL values */
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#define FX_DBL2FX_WTB(x) FX_DBL2FX_SGL(x)
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#define FIXP_WTP FIXP_SPK /* packed FIXP_SGL values */
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#define WTC(a) FX_DBL2FXCONST_SGL(a)
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#else /* SINETABLE_16BIT */
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#define FIXP_WTB FIXP_DBL
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#define FX_DBL2FX_WTB(x) (x)
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#define FIXP_WTP FIXP_DPK
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#define WTC(a) (FIXP_DBL)(a)
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#endif /* SINETABLE_16BIT */
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#define WTCP(a, b) \
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{ \
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{ WTC(a), WTC(b) } \
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}
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#endif /* FDK_ARCHDEF_H */
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