mirror of https://github.com/mstorsjo/fdk-aac.git
246 lines
9.3 KiB
C
246 lines
9.3 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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© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung 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):
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Description:
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******************************************************************************/
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#ifndef __ARCH_H__
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#define __ARCH_H__
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/* Performance / Quality profile selector */
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#define FDK_HIGH_PERFORMANCE
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/* Unify some few toolchain specific defines to avoid having large "or" macro contraptions all over the source code. */
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/* Take action against VisualStudio 2005 crosscompile problems. */
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/* Use single macro (the GCC built in macro) for architecture identification independent of the particular toolchain */
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#if defined(__i386__) || defined(__i486__) || defined(__i586__) || defined(__i686__) || (defined(_MSC_VER) && defined(_M_IX86)) || defined (__x86_64__)
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#define __x86__
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#endif
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#if (defined(_M_ARM) || defined(__CC_ARM)) && !defined(__arm__) || defined(__TI_TMS470_V5__) && !defined(__arm__)
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#define __arm__
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#endif
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/* Define __ARM_ARCH_5TE__ if armv5te features are supported */
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#if (__TARGET_ARCH_ARM == 5) || defined(__TARGET_FEATURE_DSPMUL) || (_M_ARM == 5) || defined(__ARM_ARCH_5TEJ__) || defined(__TI_TMS470_V5__) || defined(__ARM_ARCH_7EM__)
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#define __ARM_ARCH_5TE__
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#endif
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/* Define __ARM_ARCH_6__ if the armv6 intructions are being supported. */
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#if (__TARGET_ARCH_ARM == 6) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6ZK__)
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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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/* Define __ARM_ARCH_7_A__ if the armv7 intructions are being supported. */
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#if defined(__TARGET_ARCH_7_R) || defined(__ARM_ARCH_7R__)
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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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/* Define __ARM_ARCH_7_A__ if the armv7 intructions are being supported. */
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#if defined(__TARGET_ARCH_7_A) || defined(__ARM_ARCH_7A__)
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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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/* Define __ARM_ARCH_7M__ if the ARMv7-M instructions are being supported, e.g. Cortex-M3. */
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#if defined(__TARGET_ARCH_7_M) || defined(__ARM_ARCH_7_M__)
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#define __ARM_ARCH_7M__
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#endif
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/* Define __ARM_ARCH_7EM__ if the ARMv7-ME instructions are being supported, e.g. Cortex-M4. */
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#if defined(__TARGET_ARCH_7E_M) || defined(__ARM_ARCH_7E_M__)
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#define __ARM_ARCH_7EM__
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#endif
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/* Detect and unify macros for neon feature. */
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#if defined(__TARGET_FEATURE_NEON) && !defined(__ARM_NEON__)
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#define __ARM_NEON__
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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(FDK_HIGH_PERFORMANCE) && !defined(FDK_HIGH_QUALITY) /* FDK_HIGH_PERFORMANCE */
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#if defined(__mips__) || defined(__powerpc__) || defined(__sh__)
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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_5TE__) /* cppp replaced: elif */ /* cppp replaced: elif */
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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__) /* cppp replaced: elif */
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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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#else /* neither FDK_HIGH_QUALITY or FDK_HIGH_PERFORMANCE */
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#error Either set FDK_HIGH_QUALITY or FDK_HIGH_PERFORMANCE, but not both nor none of them.
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#endif /* End of quality/complexity tradeoff */
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#define FDKTOOLS_PACKED_TABLES
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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) { { STC(cos), STC(sin) } }
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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 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 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) { { WTC(a), WTC(b) } }
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#endif /* __ARCH_H__ */
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