1
2 /* -----------------------------------------------------------------------------------------------------------
3 Software 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
9 The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
10 the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
11 This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
12
13 AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
14 audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
15 independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
16 of the MPEG specifications.
17
18 Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
19 may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
20 individually for the purpose of encoding or decoding bit streams in products that are compliant with
21 the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
22 these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
23 software may already be covered under those patent licenses when it is used for those licensed purposes only.
24
25 Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
26 are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
27 applications information and documentation.
28
29 2. COPYRIGHT LICENSE
30
31 Redistribution and use in source and binary forms, with or without modification, are permitted without
32 payment of copyright license fees provided that you satisfy the following conditions:
33
34 You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
35 your modifications thereto in source code form.
36
37 You must retain the complete text of this software license in the documentation and/or other materials
38 provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
39 You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
40 modifications thereto to recipients of copies in binary form.
41
42 The name of Fraunhofer may not be used to endorse or promote products derived from this library without
43 prior written permission.
44
45 You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
46 software or your modifications thereto.
47
48 Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
49 and 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
53 3. NO PATENT LICENSE
54
55 NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
56 ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
57 respect to this software.
58
59 You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
60 by appropriate patent licenses.
61
62 4. DISCLAIMER
63
64 This 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
66 of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
67 CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
68 including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
69 or business interruption, however caused and on any theory of liability, whether in contract, strict
70 liability, or tort (including negligence), arising in any way out of the use of this software, even if
71 advised of the possibility of such damage.
72
73 5. CONTACT INFORMATION
74
75 Fraunhofer Institute for Integrated Circuits IIS
76 Attention: Audio and Multimedia Departments - FDK AAC LL
77 Am Wolfsmantel 33
78 91058 Erlangen, Germany
79
80 www.iis.fraunhofer.de/amm
81 amm-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__) && __mips_isa_rev < 6
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
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)111 inline 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
cplxMultDiv2(FIXP_DBL * c_Re,FIXP_DBL * c_Im,const FIXP_DBL a_Re,const FIXP_DBL a_Im,const FIXP_SPK w)126 inline 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
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)139 inline 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
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)154 inline 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
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)169 inline 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
cplxMultDiv2(FIXP_DBL * c_Re,FIXP_DBL * c_Im,const FIXP_DBL a_Re,const FIXP_DBL a_Im,const FIXP_DPK w)184 inline 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
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)197 inline 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
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)214 inline 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
cplxMult(FIXP_DBL * c_Re,FIXP_DBL * c_Im,const FIXP_DBL a_Re,const FIXP_DBL a_Im,const FIXP_SPK w)229 inline 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
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)242 inline 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
cplxMult(FIXP_DBL * c_Re,FIXP_DBL * c_Im,const FIXP_DBL a_Re,const FIXP_DBL a_Im,const FIXP_DPK w)256 inline 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