| |
| /* ----------------------------------------------------------------------------------------------------------- |
| Software License for The Fraunhofer FDK AAC Codec Library for Android |
| |
| © Copyright 1995 - 2012 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 |
| |
| ******************************************************************************/ |
| |
| #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__) /* cppp replaced: elif */ |
| #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__ */ |
| |
