1
2/* -----------------------------------------------------------------------------------------------------------
3Software License for The Fraunhofer FDK AAC Codec Library for Android
4
5� Copyright  1995 - 2013 Fraunhofer-Gesellschaft zur F�rderung der angewandten Forschung e.V.
6  All rights reserved.
7
8 1.    INTRODUCTION
9The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
10the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
11This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
12
13AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
14audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
15independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
16of the MPEG specifications.
17
18Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
19may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
20individually for the purpose of encoding or decoding bit streams in products that are compliant with
21the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
22these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
23software may already be covered under those patent licenses when it is used for those licensed purposes only.
24
25Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
26are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
27applications information and documentation.
28
292.    COPYRIGHT LICENSE
30
31Redistribution and use in source and binary forms, with or without modification, are permitted without
32payment of copyright license fees provided that you satisfy the following conditions:
33
34You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
35your modifications thereto in source code form.
36
37You must retain the complete text of this software license in the documentation and/or other materials
38provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
39You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
40modifications thereto to recipients of copies in binary form.
41
42The name of Fraunhofer may not be used to endorse or promote products derived from this library without
43prior written permission.
44
45You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
46software or your modifications thereto.
47
48Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
49and the date of any change. For modified versions of the FDK AAC Codec, the term
50"Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term
51"Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android."
52
533.    NO PATENT LICENSE
54
55NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
56ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
57respect to this software.
58
59You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
60by appropriate patent licenses.
61
624.    DISCLAIMER
63
64This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors
65"AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties
66of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
67CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
68including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
69or business interruption, however caused and on any theory of liability, whether in contract, strict
70liability, or tort (including negligence), arising in any way out of the use of this software, even if
71advised of the possibility of such damage.
72
735.    CONTACT INFORMATION
74
75Fraunhofer Institute for Integrated Circuits IIS
76Attention: Audio and Multimedia Departments - FDK AAC LL
77Am Wolfsmantel 33
7891058 Erlangen, Germany
79
80www.iis.fraunhofer.de/amm
81amm-info@iis.fraunhofer.de
82----------------------------------------------------------------------------------------------------------- */
83
84/***************************  Fraunhofer IIS FDK Tools  **********************
85
86   Author(s):
87   Description: fixed point intrinsics
88
89******************************************************************************/
90
91#include "common_fix.h"
92
93#if !defined(__CPLX_Mult_H__)
94#define __CPLX_Mult_H__
95
96#if defined(__CC_ARM) || defined(__arm__) || defined(_M_ARM)	/* cppp replaced: elif */
97#include "arm/cplx_mul.h"
98
99#elif defined(__GNUC__) && defined(__mips__)	/* cppp replaced: elif */
100#include "mips/cplx_mul.h"
101
102#endif /* #if defined all cores: bfin, arm, etc. */
103
104/* ############################################################################# */
105
106/* Fallback generic implementations */
107
108#if !defined(FUNCTION_cplxMultDiv2_32x16X2)
109#define FUNCTION_cplxMultDiv2_32x16X2
110
111inline void cplxMultDiv2( FIXP_DBL *c_Re,
112                          FIXP_DBL *c_Im,
113                          const FIXP_DBL  a_Re,
114                          const FIXP_DBL  a_Im,
115                          const FIXP_SGL  b_Re,
116                          const FIXP_SGL  b_Im)
117{
118  *c_Re = fMultDiv2(a_Re,b_Re) - fMultDiv2(a_Im,b_Im);
119  *c_Im = fMultDiv2(a_Re,b_Im) + fMultDiv2(a_Im,b_Re);
120}
121#endif
122
123#if !defined(FUNCTION_cplxMultDiv2_32x16)
124#define FUNCTION_cplxMultDiv2_32x16
125
126inline void cplxMultDiv2( FIXP_DBL *c_Re,
127                          FIXP_DBL *c_Im,
128                          const FIXP_DBL a_Re,
129                          const FIXP_DBL a_Im,
130                          const FIXP_SPK w )
131{
132  cplxMultDiv2(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
133}
134#endif
135
136#if !defined(FUNCTION_cplxMultAddDiv2_32x16X2)
137#define FUNCTION_cplxMultAddDiv2_32x16X2
138
139inline void cplxMultAddDiv2( FIXP_DBL *c_Re,
140                          FIXP_DBL *c_Im,
141                          const FIXP_DBL  a_Re,
142                          const FIXP_DBL  a_Im,
143                          const FIXP_SGL  b_Re,
144                          const FIXP_SGL  b_Im)
145{
146  *c_Re += fMultDiv2(a_Re,b_Re) - fMultDiv2(a_Im,b_Im);
147  *c_Im += fMultDiv2(a_Re,b_Im) + fMultDiv2(a_Im,b_Re);
148}
149#endif
150
151#if !defined(FUNCTION_cplxMultSubDiv2_32x16X2)
152#define FUNCTION_cplxMultSubDiv2_32x16X2
153
154inline void cplxMultSubDiv2( FIXP_DBL *c_Re,
155                             FIXP_DBL *c_Im,
156                             const FIXP_DBL  a_Re,
157                             const FIXP_DBL  a_Im,
158                             const FIXP_SGL  b_Re,
159                             const FIXP_SGL  b_Im)
160{
161  *c_Re -= fMultDiv2(a_Re,b_Re) - fMultDiv2(a_Im,b_Im);
162  *c_Im -= fMultDiv2(a_Re,b_Im) + fMultDiv2(a_Im,b_Re);
163}
164#endif
165
166#if !defined(FUNCTION_cplxMultDiv2_32x32X2)
167#define FUNCTION_cplxMultDiv2_32x32X2
168
169inline void cplxMultDiv2( FIXP_DBL *c_Re,
170                          FIXP_DBL *c_Im,
171                          const FIXP_DBL  a_Re,
172                          const FIXP_DBL  a_Im,
173                          const FIXP_DBL  b_Re,
174                          const FIXP_DBL  b_Im)
175{
176  *c_Re = fMultDiv2(a_Re,b_Re) - fMultDiv2(a_Im,b_Im);
177  *c_Im = fMultDiv2(a_Re,b_Im) + fMultDiv2(a_Im,b_Re);
178}
179#endif
180
181#if !defined(FUNCTION_cplxMultDiv2_32x32)
182#define FUNCTION_cplxMultDiv2_32x32
183
184inline void cplxMultDiv2( FIXP_DBL *c_Re,
185                          FIXP_DBL *c_Im,
186                          const FIXP_DBL  a_Re,
187                          const FIXP_DBL  a_Im,
188                          const FIXP_DPK  w)
189{
190  cplxMultDiv2(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
191}
192#endif
193
194#if !defined(FUNCTION_cplxMultSubDiv2_32x32X2)
195#define FUNCTION_cplxMultSubDiv2_32x32X2
196
197inline void cplxMultSubDiv2( FIXP_DBL *c_Re,
198                             FIXP_DBL *c_Im,
199                             const FIXP_DBL  a_Re,
200                             const FIXP_DBL  a_Im,
201                             const FIXP_DBL  b_Re,
202                             const FIXP_DBL  b_Im)
203{
204  *c_Re -= fMultDiv2(a_Re,b_Re) - fMultDiv2(a_Im,b_Im);
205  *c_Im -= fMultDiv2(a_Re,b_Im) + fMultDiv2(a_Im,b_Re);
206}
207#endif
208
209/* ############################################################################# */
210
211#if !defined(FUNCTION_cplxMult_32x16X2)
212#define FUNCTION_cplxMult_32x16X2
213
214inline void cplxMult( FIXP_DBL *c_Re,
215                      FIXP_DBL *c_Im,
216                      const FIXP_DBL  a_Re,
217                      const FIXP_DBL  a_Im,
218                      const FIXP_SGL  b_Re,
219                      const FIXP_SGL  b_Im)
220{
221  *c_Re = fMult(a_Re,b_Re) - fMult(a_Im,b_Im);
222  *c_Im = fMult(a_Re,b_Im) + fMult(a_Im,b_Re);
223}
224#endif
225
226#if !defined(FUNCTION_cplxMult_32x16)
227#define FUNCTION_cplxMult_32x16
228
229inline void cplxMult( FIXP_DBL *c_Re,
230                      FIXP_DBL *c_Im,
231                      const FIXP_DBL a_Re,
232                      const FIXP_DBL a_Im,
233                      const FIXP_SPK w )
234{
235  cplxMult(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
236}
237#endif
238
239#if !defined(FUNCTION_cplxMult_32x32X2)
240#define FUNCTION_cplxMult_32x32X2
241
242inline void cplxMult( FIXP_DBL *c_Re,
243                      FIXP_DBL *c_Im,
244                      const FIXP_DBL  a_Re,
245                      const FIXP_DBL  a_Im,
246                      const FIXP_DBL  b_Re,
247                      const FIXP_DBL  b_Im)
248{
249  *c_Re = fMult(a_Re,b_Re) - fMult(a_Im,b_Im);
250  *c_Im = fMult(a_Re,b_Im) + fMult(a_Im,b_Re);
251}
252#endif
253
254#if !defined(FUNCTION_cplxMult_32x32)
255#define FUNCTION_cplxMult_32x32
256inline void cplxMult( FIXP_DBL *c_Re,
257                      FIXP_DBL *c_Im,
258                      const FIXP_DBL  a_Re,
259                      const FIXP_DBL  a_Im,
260                      const FIXP_DPK  w)
261{
262  cplxMult(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
263}
264#endif
265
266/* ############################################################################# */
267
268#endif /* __CPLX_Mult_H__ */
269
270