307 lines
11 KiB
C
307 lines
11 KiB
C
|
|
/* -----------------------------------------------------------------------------------------------------------
|
|
Software License for The Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android
|
|
|
|
© Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
|
|
All rights reserved.
|
|
|
|
1. INTRODUCTION
|
|
The Third-Party Modified Version of 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:
|
|
|
|
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
|
|
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.
|
|
|
|
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."
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
5. CONTACT INFORMATION
|
|
|
|
Fraunhofer Institute for Integrated Circuits IIS
|
|
Attention: Audio and Multimedia Departments - FDK AAC LL
|
|
Am Wolfsmantel 33
|
|
91058 Erlangen, Germany
|
|
|
|
www.iis.fraunhofer.de/amm
|
|
amm-info@iis.fraunhofer.de
|
|
----------------------------------------------------------------------------------------------------------- */
|
|
|
|
/*************************** Fraunhofer IIS FDK Tools **********************
|
|
|
|
Author(s): M. Lohwasser, M. Gayer
|
|
Description: fixed point intrinsics
|
|
|
|
******************************************************************************/
|
|
|
|
#if !defined(__FIXMADD_H__)
|
|
#define __FIXMADD_H__
|
|
|
|
#include "FDK_archdef.h"
|
|
#include "machine_type.h"
|
|
#include "fixmul.h"
|
|
|
|
#if defined(__arm__)
|
|
#include "arm/fixmadd_arm.h"
|
|
|
|
#elif defined(__mips__) /* cppp replaced: elif */
|
|
#include "mips/fixmadd_mips.h"
|
|
|
|
#endif /* all cores */
|
|
|
|
/*************************************************************************
|
|
*************************************************************************
|
|
Software fallbacks for missing functions.
|
|
**************************************************************************
|
|
**************************************************************************/
|
|
|
|
/* Divide by two versions. */
|
|
|
|
#if !defined(FUNCTION_fixmadddiv2_DD)
|
|
inline FIXP_DBL fixmadddiv2_DD (FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b)
|
|
{ return (x + fMultDiv2 (a, b)); }
|
|
#endif
|
|
|
|
#if !defined(FUNCTION_fixmadddiv2_SD)
|
|
inline FIXP_DBL fixmadddiv2_SD (FIXP_DBL x, const FIXP_SGL a, const FIXP_DBL b) {
|
|
#ifdef FUNCTION_fixmadddiv2_DS
|
|
return fixmadddiv2_DS(x, b, a);
|
|
#else
|
|
return fixmadddiv2_DD(x, FX_SGL2FX_DBL(a), b);
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#if !defined(FUNCTION_fixmadddiv2_DS)
|
|
inline FIXP_DBL fixmadddiv2_DS (FIXP_DBL x, const FIXP_DBL a, const FIXP_SGL b) {
|
|
#ifdef FUNCTION_fixmadddiv2_SD
|
|
return fixmadddiv2_SD(x, b, a);
|
|
#else
|
|
return fixmadddiv2_DD(x, a, FX_SGL2FX_DBL(b));
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#if !defined(FUNCTION_fixmadddiv2_SS)
|
|
inline FIXP_DBL fixmadddiv2_SS (FIXP_DBL x, const FIXP_SGL a, const FIXP_SGL b)
|
|
{ return x + fMultDiv2(a,b); }
|
|
#endif
|
|
|
|
#if !defined(FUNCTION_fixmsubdiv2_DD)
|
|
inline FIXP_DBL fixmsubdiv2_DD (FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b)
|
|
{ return (x - fMultDiv2 (a, b)); }
|
|
#endif
|
|
|
|
#if !defined(FUNCTION_fixmsubdiv2_SD)
|
|
inline FIXP_DBL fixmsubdiv2_SD (FIXP_DBL x, const FIXP_SGL a, const FIXP_DBL b) {
|
|
#ifdef FUNCTION_fixmsubdiv2_DS
|
|
return fixmsubdiv2_DS(x, b, a);
|
|
#else
|
|
return fixmsubdiv2_DD(x, FX_SGL2FX_DBL(a), b);
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#if !defined(FUNCTION_fixmsubdiv2_DS)
|
|
inline FIXP_DBL fixmsubdiv2_DS (FIXP_DBL x, const FIXP_DBL a, const FIXP_SGL b) {
|
|
#ifdef FUNCTION_fixmsubdiv2_SD
|
|
return fixmsubdiv2_SD(x, b, a);
|
|
#else
|
|
return fixmsubdiv2_DD(x, a, FX_SGL2FX_DBL(b));
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#if !defined(FUNCTION_fixmsubdiv2_SS)
|
|
inline FIXP_DBL fixmsubdiv2_SS (FIXP_DBL x, const FIXP_SGL a, const FIXP_SGL b)
|
|
{ return x - fMultDiv2(a,b); }
|
|
#endif
|
|
|
|
|
|
#if !defined(FUNCTION_fixmadddiv2BitExact_DD)
|
|
#define FUNCTION_fixmadddiv2BitExact_DD
|
|
inline FIXP_DBL fixmadddiv2BitExact_DD (FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b) {
|
|
return x + fMultDiv2BitExact(a, b);
|
|
}
|
|
#endif
|
|
#if !defined(FUNCTION_fixmadddiv2BitExact_SD)
|
|
#define FUNCTION_fixmadddiv2BitExact_SD
|
|
inline FIXP_DBL fixmadddiv2BitExact_SD (FIXP_DBL x, const FIXP_SGL a, const FIXP_DBL b) {
|
|
#ifdef FUNCTION_fixmadddiv2BitExact_DS
|
|
return fixmadddiv2BitExact_DS(x, b, a);
|
|
#else
|
|
return x + fMultDiv2BitExact(a, b);
|
|
#endif
|
|
}
|
|
#endif
|
|
#if !defined(FUNCTION_fixmadddiv2BitExact_DS)
|
|
#define FUNCTION_fixmadddiv2BitExact_DS
|
|
inline FIXP_DBL fixmadddiv2BitExact_DS (FIXP_DBL x, const FIXP_DBL a, const FIXP_SGL b) {
|
|
#ifdef FUNCTION_fixmadddiv2BitExact_SD
|
|
return fixmadddiv2BitExact_SD(x, b, a);
|
|
#else
|
|
return x + fMultDiv2BitExact(a, b);
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#if !defined(FUNCTION_fixmsubdiv2BitExact_DD)
|
|
#define FUNCTION_fixmsubdiv2BitExact_DD
|
|
inline FIXP_DBL fixmsubdiv2BitExact_DD (FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b) {
|
|
return x - fMultDiv2BitExact(a, b);
|
|
}
|
|
#endif
|
|
#if !defined(FUNCTION_fixmsubdiv2BitExact_SD)
|
|
#define FUNCTION_fixmsubdiv2BitExact_SD
|
|
inline FIXP_DBL fixmsubdiv2BitExact_SD (FIXP_DBL x, const FIXP_SGL a, const FIXP_DBL b) {
|
|
#ifdef FUNCTION_fixmsubdiv2BitExact_DS
|
|
return fixmsubdiv2BitExact_DS(x, b, a);
|
|
#else
|
|
return x - fMultDiv2BitExact(a, b);
|
|
#endif
|
|
}
|
|
#endif
|
|
#if !defined(FUNCTION_fixmsubdiv2BitExact_DS)
|
|
#define FUNCTION_fixmsubdiv2BitExact_DS
|
|
inline FIXP_DBL fixmsubdiv2BitExact_DS (FIXP_DBL x, const FIXP_DBL a, const FIXP_SGL b) {
|
|
#ifdef FUNCTION_fixmsubdiv2BitExact_SD
|
|
return fixmsubdiv2BitExact_SD(x, b, a);
|
|
#else
|
|
return x - fMultDiv2BitExact(a, b);
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
/* Normal versions */
|
|
|
|
#if !defined(FUNCTION_fixmadd_DD)
|
|
inline FIXP_DBL fixmadd_DD (FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b)
|
|
{ return fixmadddiv2_DD(x,a,b)<<1; }
|
|
#endif
|
|
#if !defined(FUNCTION_fixmadd_SD)
|
|
inline FIXP_DBL fixmadd_SD (FIXP_DBL x, const FIXP_SGL a, const FIXP_DBL b) {
|
|
#ifdef FUNCTION_fixmadd_DS
|
|
return fixmadd_DS(x, b, a);
|
|
#else
|
|
return fixmadd_DD(x, FX_SGL2FX_DBL(a), b);
|
|
#endif
|
|
}
|
|
#endif
|
|
#if !defined(FUNCTION_fixmadd_DS)
|
|
inline FIXP_DBL fixmadd_DS (FIXP_DBL x, const FIXP_DBL a, const FIXP_SGL b) {
|
|
#ifdef FUNCTION_fixmadd_SD
|
|
return fixmadd_SD(x, b, a);
|
|
#else
|
|
return fixmadd_DD(x, a, FX_SGL2FX_DBL(b));
|
|
#endif
|
|
}
|
|
#endif
|
|
#if !defined(FUNCTION_fixmadd_SS)
|
|
inline FIXP_DBL fixmadd_SS (FIXP_DBL x, const FIXP_SGL a, const FIXP_SGL b)
|
|
{ return (x + fMultDiv2(a,b))<<1; }
|
|
#endif
|
|
|
|
#if !defined(FUNCTION_fixmsub_DD)
|
|
inline FIXP_DBL fixmsub_DD (FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b)
|
|
{ return fixmsubdiv2_DD(x,a,b)<<1; }
|
|
#endif
|
|
#if !defined(FUNCTION_fixmsub_SD)
|
|
inline FIXP_DBL fixmsub_SD (FIXP_DBL x, const FIXP_SGL a, const FIXP_DBL b) {
|
|
#ifdef FUNCTION_fixmsub_DS
|
|
return fixmsub_DS(x, b, a);
|
|
#else
|
|
return fixmsub_DD(x, FX_SGL2FX_DBL(a), b);
|
|
#endif
|
|
}
|
|
#endif
|
|
#if !defined(FUNCTION_fixmsub_DS)
|
|
inline FIXP_DBL fixmsub_DS (FIXP_DBL x, const FIXP_DBL a, const FIXP_SGL b) {
|
|
#ifdef FUNCTION_fixmsub_SD
|
|
return fixmsub_SD(x, b, a);
|
|
#else
|
|
return fixmsub_DD(x, a, FX_SGL2FX_DBL(b));
|
|
#endif
|
|
}
|
|
#endif
|
|
#if !defined(FUNCTION_fixmsub_SS)
|
|
inline FIXP_DBL fixmsub_SS (FIXP_DBL x, const FIXP_SGL a, const FIXP_SGL b)
|
|
{ return (x - fMultDiv2(a,b))<<1; }
|
|
#endif
|
|
|
|
#if !defined(FUNCTION_fixpow2adddiv2_D)
|
|
inline INT fixpadddiv2_D (FIXP_DBL x, const FIXP_DBL a)
|
|
{ return (x + fPow2Div2(a)); }
|
|
#endif
|
|
#if !defined(FUNCTION_fixpow2add_D)
|
|
inline INT fixpadd_D (FIXP_DBL x, const FIXP_DBL a)
|
|
{ return (x + fPow2(a)); }
|
|
#endif
|
|
|
|
#if !defined(FUNCTION_fixpow2adddiv2_S)
|
|
inline INT fixpadddiv2_S (FIXP_DBL x, const FIXP_SGL a)
|
|
{ return (x + fPow2Div2(a)); }
|
|
#endif
|
|
#if !defined(FUNCTION_fixpow2add_S)
|
|
inline INT fixpadd_S (FIXP_DBL x, const FIXP_SGL a)
|
|
{ return (x + fPow2(a)); }
|
|
#endif
|
|
|
|
|
|
|
|
#endif // __FIXMADD_H__
|
|
|