2585f10da2
Only enable code using mips32/mips64 instructions if the compiler is targetting this ISA. (integer madd and msub instructions aren't available in the ``canonical'' mips ISAs)
163 lines
6.8 KiB
C
163 lines
6.8 KiB
C
|
|
/* -----------------------------------------------------------------------------------------------------------
|
|
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.
|
|
|
|
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.
|
|
|
|
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):
|
|
Description: fixed point intrinsics
|
|
|
|
******************************************************************************/
|
|
|
|
|
|
#if defined(__GNUC__) && defined(__mips_isa_rev) && __mips_isa_rev < 6
|
|
|
|
|
|
//#define FUNCTION_cplxMultDiv2_32x16
|
|
//#define FUNCTION_cplxMultDiv2_32x16X2
|
|
#define FUNCTION_cplxMultDiv2_32x32X2
|
|
//#define FUNCTION_cplxMult_32x16
|
|
//#define FUNCTION_cplxMult_32x16X2
|
|
#define FUNCTION_cplxMult_32x32X2
|
|
|
|
#if defined(FUNCTION_cplxMultDiv2_32x32X2)
|
|
inline void cplxMultDiv2( FIXP_DBL *c_Re,
|
|
FIXP_DBL *c_Im,
|
|
FIXP_DBL a_Re,
|
|
FIXP_DBL a_Im,
|
|
FIXP_DBL b_Re,
|
|
FIXP_DBL b_Im)
|
|
{
|
|
INT result;
|
|
|
|
__asm__ ("mult %[a_Re], %[b_Re];\n"
|
|
"msub %[a_Im], %[b_Im];\n"
|
|
"mfhi %[result];\n"
|
|
: [result]"=r"(result)
|
|
: [a_Re]"d"(a_Re), [b_Re]"d"(b_Re), [a_Im]"d"(a_Im), [b_Im]"d"(b_Im)
|
|
: "lo");
|
|
|
|
*c_Re = result;
|
|
|
|
__asm__ ("mult %[a_Re], %[b_Im];\n"
|
|
"madd %[a_Im], %[b_Re];\n"
|
|
"mfhi %[result];\n"
|
|
: [result]"=r"(result)
|
|
: [a_Re]"r"(a_Re), [b_Im]"r"(b_Im), [a_Im]"r"(a_Im), [b_Re]"r"(b_Re)
|
|
: "lo");
|
|
*c_Im = result;
|
|
}
|
|
#endif
|
|
|
|
#if defined(FUNCTION_cplxMult_32x32X2)
|
|
inline void cplxMult( FIXP_DBL *c_Re,
|
|
FIXP_DBL *c_Im,
|
|
FIXP_DBL a_Re,
|
|
FIXP_DBL a_Im,
|
|
FIXP_DBL b_Re,
|
|
FIXP_DBL b_Im)
|
|
{
|
|
INT result;
|
|
|
|
__asm__ ("mult %[a_Re], %[b_Re];\n"
|
|
"msub %[a_Im], %[b_Im];\n"
|
|
"mfhi %[result];\n"
|
|
//"extr_w %[result], 31;\n"
|
|
: [result]"=r"(result)
|
|
: [a_Re]"r"(a_Re), [b_Re]"r"(b_Re), [a_Im]"r"(a_Im), [b_Im]"r"(b_Im)
|
|
: "lo");
|
|
*c_Re = result<<1;
|
|
|
|
__asm__ ("mult %[a_Re], %[b_Im];\n"
|
|
"madd %[a_Im], %[b_Re];\n"
|
|
"mfhi %[result];\n"
|
|
//"extr_w %[result], 31;\n"
|
|
: [result]"=r"(result)
|
|
: [a_Re]"r"(a_Re), [b_Im]"r"(b_Im), [a_Im]"r"(a_Im), [b_Re]"r"(b_Re)
|
|
: "lo");
|
|
*c_Im = result<<1;
|
|
}
|
|
#endif
|
|
|
|
#endif /* defined(__GNUC__) && defined(__mips__) */
|
|
|