cplx_mul.h - Android社区 - https://www.androidos.net.cn/

/* -----------------------------------------------------------------------------------------------------------
Software License for The Fraunhofer FDK AAC Codec Library for Android

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
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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.

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ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
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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
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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

******************************************************************************/

#include "common_fix.h"

#if !defined(__CPLX_Mult_H__)
#define __CPLX_Mult_H__

#if defined(__CC_ARM) || defined(__arm__) || defined(_M_ARM)	/* cppp replaced: elif */
#include "arm/cplx_mul.h"

#elif defined(__GNUC__) && defined(__mips__) && __mips_isa_rev < 6
#include "mips/cplx_mul.h"

#endif /* #if defined all cores: bfin, arm, etc. */

/* ############################################################################# */

/* Fallback generic implementations */

#if !defined(FUNCTION_cplxMultDiv2_32x16X2)
#define FUNCTION_cplxMultDiv2_32x16X2

inline void cplxMultDiv2( FIXP_DBL *c_Re,
                          FIXP_DBL *c_Im,
                          const FIXP_DBL  a_Re,
                          const FIXP_DBL  a_Im,
                          const FIXP_SGL  b_Re,
                          const FIXP_SGL  b_Im)
{
  *c_Re = fMultDiv2(a_Re,b_Re) - fMultDiv2(a_Im,b_Im);
  *c_Im = fMultDiv2(a_Re,b_Im) + fMultDiv2(a_Im,b_Re);
}
#endif

#if !defined(FUNCTION_cplxMultDiv2_32x16)
#define FUNCTION_cplxMultDiv2_32x16

inline void cplxMultDiv2( FIXP_DBL *c_Re,
                          FIXP_DBL *c_Im,
                          const FIXP_DBL a_Re,
                          const FIXP_DBL a_Im,
                          const FIXP_SPK w )
{
  cplxMultDiv2(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
}
#endif

#if !defined(FUNCTION_cplxMultAddDiv2_32x16X2)
#define FUNCTION_cplxMultAddDiv2_32x16X2

inline void cplxMultAddDiv2( FIXP_DBL *c_Re,
                          FIXP_DBL *c_Im,
                          const FIXP_DBL  a_Re,
                          const FIXP_DBL  a_Im,
                          const FIXP_SGL  b_Re,
                          const FIXP_SGL  b_Im)
{
  *c_Re += fMultDiv2(a_Re,b_Re) - fMultDiv2(a_Im,b_Im);
  *c_Im += fMultDiv2(a_Re,b_Im) + fMultDiv2(a_Im,b_Re);
}
#endif

#if !defined(FUNCTION_cplxMultSubDiv2_32x16X2)
#define FUNCTION_cplxMultSubDiv2_32x16X2

inline void cplxMultSubDiv2( FIXP_DBL *c_Re,
                             FIXP_DBL *c_Im,
                             const FIXP_DBL  a_Re,
                             const FIXP_DBL  a_Im,
                             const FIXP_SGL  b_Re,
                             const FIXP_SGL  b_Im)
{
  *c_Re -= fMultDiv2(a_Re,b_Re) - fMultDiv2(a_Im,b_Im);
  *c_Im -= fMultDiv2(a_Re,b_Im) + fMultDiv2(a_Im,b_Re);
}
#endif

#if !defined(FUNCTION_cplxMultDiv2_32x32X2)
#define FUNCTION_cplxMultDiv2_32x32X2

inline void cplxMultDiv2( FIXP_DBL *c_Re,
                          FIXP_DBL *c_Im,
                          const FIXP_DBL  a_Re,
                          const FIXP_DBL  a_Im,
                          const FIXP_DBL  b_Re,
                          const FIXP_DBL  b_Im)
{
  *c_Re = fMultDiv2(a_Re,b_Re) - fMultDiv2(a_Im,b_Im);
  *c_Im = fMultDiv2(a_Re,b_Im) + fMultDiv2(a_Im,b_Re);
}
#endif

#if !defined(FUNCTION_cplxMultDiv2_32x32)
#define FUNCTION_cplxMultDiv2_32x32

inline void cplxMultDiv2( FIXP_DBL *c_Re,
                          FIXP_DBL *c_Im,
                          const FIXP_DBL  a_Re,
                          const FIXP_DBL  a_Im,
                          const FIXP_DPK  w)
{
  cplxMultDiv2(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
}
#endif

#if !defined(FUNCTION_cplxMultSubDiv2_32x32X2)
#define FUNCTION_cplxMultSubDiv2_32x32X2

inline void cplxMultSubDiv2( FIXP_DBL *c_Re,
                             FIXP_DBL *c_Im,
                             const FIXP_DBL  a_Re,
                             const FIXP_DBL  a_Im,
                             const FIXP_DBL  b_Re,
                             const FIXP_DBL  b_Im)
{
  *c_Re -= fMultDiv2(a_Re,b_Re) - fMultDiv2(a_Im,b_Im);
  *c_Im -= fMultDiv2(a_Re,b_Im) + fMultDiv2(a_Im,b_Re);
}
#endif

/* ############################################################################# */

#if !defined(FUNCTION_cplxMult_32x16X2)
#define FUNCTION_cplxMult_32x16X2

inline void cplxMult( FIXP_DBL *c_Re,
                      FIXP_DBL *c_Im,
                      const FIXP_DBL  a_Re,
                      const FIXP_DBL  a_Im,
                      const FIXP_SGL  b_Re,
                      const FIXP_SGL  b_Im)
{
  *c_Re = fMult(a_Re,b_Re) - fMult(a_Im,b_Im);
  *c_Im = fMult(a_Re,b_Im) + fMult(a_Im,b_Re);
}
#endif

#if !defined(FUNCTION_cplxMult_32x16)
#define FUNCTION_cplxMult_32x16

inline void cplxMult( FIXP_DBL *c_Re,
                      FIXP_DBL *c_Im,
                      const FIXP_DBL a_Re,
                      const FIXP_DBL a_Im,
                      const FIXP_SPK w )
{
  cplxMult(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
}
#endif

#if !defined(FUNCTION_cplxMult_32x32X2)
#define FUNCTION_cplxMult_32x32X2

inline void cplxMult( FIXP_DBL *c_Re,
                      FIXP_DBL *c_Im,
                      const FIXP_DBL  a_Re,
                      const FIXP_DBL  a_Im,
                      const FIXP_DBL  b_Re,
                      const FIXP_DBL  b_Im)
{
  *c_Re = fMult(a_Re,b_Re) - fMult(a_Im,b_Im);
  *c_Im = fMult(a_Re,b_Im) + fMult(a_Im,b_Re);
}
#endif

#if !defined(FUNCTION_cplxMult_32x32)
#define FUNCTION_cplxMult_32x32
inline void cplxMult( FIXP_DBL *c_Re,
                      FIXP_DBL *c_Im,
                      const FIXP_DBL  a_Re,
                      const FIXP_DBL  a_Im,
                      const FIXP_DPK  w)
{
  cplxMult(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
}
#endif

/* ############################################################################# */

#endif /* __CPLX_Mult_H__ */

C++程序 | 270行 | 10.06 KB

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