1 /* -----------------------------------------------------------------------------
2 Software License for The Fraunhofer FDK AAC Codec Library for Android
3
4 © Copyright 1995 - 2018 Fraunhofer-Gesellschaft zur Förderung der angewandten
5 Forschung e.V. All rights reserved.
6
7 1. INTRODUCTION
8 The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software
9 that implements the MPEG Advanced Audio Coding ("AAC") encoding and decoding
10 scheme for digital audio. This FDK AAC Codec software is intended to be used on
11 a wide variety of Android devices.
12
13 AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient
14 general perceptual audio codecs. AAC-ELD is considered the best-performing
15 full-bandwidth communications codec by independent studies and is widely
16 deployed. AAC has been standardized by ISO and IEC as part of the MPEG
17 specifications.
18
19 Patent licenses for necessary patent claims for the FDK AAC Codec (including
20 those of Fraunhofer) may be obtained through Via Licensing
21 (www.vialicensing.com) or through the respective patent owners individually for
22 the purpose of encoding or decoding bit streams in products that are compliant
23 with the ISO/IEC MPEG audio standards. Please note that most manufacturers of
24 Android devices already license these patent claims through Via Licensing or
25 directly from the patent owners, and therefore FDK AAC Codec software may
26 already be covered under those patent licenses when it is used for those
27 licensed purposes only.
28
29 Commercially-licensed AAC software libraries, including floating-point versions
30 with enhanced sound quality, are also available from Fraunhofer. Users are
31 encouraged to check the Fraunhofer website for additional applications
32 information and documentation.
33
34 2. COPYRIGHT LICENSE
35
36 Redistribution and use in source and binary forms, with or without modification,
37 are permitted without payment of copyright license fees provided that you
38 satisfy the following conditions:
39
40 You must retain the complete text of this software license in redistributions of
41 the FDK AAC Codec or your modifications thereto in source code form.
42
43 You must retain the complete text of this software license in the documentation
44 and/or other materials provided with redistributions of the FDK AAC Codec or
45 your modifications thereto in binary form. You must make available free of
46 charge copies of the complete source code of the FDK AAC Codec and your
47 modifications thereto to recipients of copies in binary form.
48
49 The name of Fraunhofer may not be used to endorse or promote products derived
50 from this library without prior written permission.
51
52 You may not charge copyright license fees for anyone to use, copy or distribute
53 the FDK AAC Codec software or your modifications thereto.
54
55 Your modified versions of the FDK AAC Codec must carry prominent notices stating
56 that you changed the software and the date of any change. For modified versions
57 of the FDK AAC Codec, the term "Fraunhofer FDK AAC Codec Library for Android"
58 must be replaced by the term "Third-Party Modified Version of the Fraunhofer FDK
59 AAC Codec Library for Android."
60
61 3. NO PATENT LICENSE
62
63 NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without
64 limitation the patents of Fraunhofer, ARE GRANTED BY THIS SOFTWARE LICENSE.
65 Fraunhofer provides no warranty of patent non-infringement with respect to this
66 software.
67
68 You may use this FDK AAC Codec software or modifications thereto only for
69 purposes that are authorized by appropriate patent licenses.
70
71 4. DISCLAIMER
72
73 This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright
74 holders and contributors "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,
75 including but not limited to the implied warranties of merchantability and
76 fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
77 CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary,
78 or consequential damages, including but not limited to procurement of substitute
79 goods or services; loss of use, data, or profits, or business interruption,
80 however caused and on any theory of liability, whether in contract, strict
81 liability, or tort (including negligence), arising in any way out of the use of
82 this software, even if advised of the possibility of such damage.
83
84 5. CONTACT INFORMATION
85
86 Fraunhofer Institute for Integrated Circuits IIS
87 Attention: Audio and Multimedia Departments - FDK AAC LL
88 Am Wolfsmantel 33
89 91058 Erlangen, Germany
90
91 www.iis.fraunhofer.de/amm
92 amm-info@iis.fraunhofer.de
93 ----------------------------------------------------------------------------- */
94
95 /******************* Library for basic calculation routines ********************
96
97 Author(s):
98
99 Description: fixed point intrinsics
100
101 *******************************************************************************/
102
103 #if !defined(CPLX_MUL_H)
104 #define CPLX_MUL_H
105
106 #include "common_fix.h"
107
108 #if defined(__arm__) || defined(_M_ARM)
109 #include "arm/cplx_mul_arm.h"
110
111 #elif defined(__GNUC__) && defined(__mips__) && __mips_isa_rev < 6
112 #include "mips/cplx_mul_mips.h"
113
114 #endif /* #if defined all cores: bfin, arm, etc. */
115
116 /* #############################################################################
117 */
118
119 /* Fallback generic implementations */
120
121 #if !defined(FUNCTION_cplxMultDiv2_32x16X2)
122 #define FUNCTION_cplxMultDiv2_32x16X2
123
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)124 inline void cplxMultDiv2(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re,
125 const FIXP_DBL a_Im, const FIXP_SGL b_Re,
126 const FIXP_SGL b_Im) {
127 *c_Re = fMultDiv2(a_Re, b_Re) - fMultDiv2(a_Im, b_Im);
128 *c_Im = fMultDiv2(a_Re, b_Im) + fMultDiv2(a_Im, b_Re);
129 }
130 #endif
131
132 #if !defined(FUNCTION_cplxMultDiv2_16x16X2)
133 #define FUNCTION_cplxMultDiv2_16x16X2
134
cplxMultDiv2(FIXP_DBL * c_Re,FIXP_DBL * c_Im,const FIXP_SGL a_Re,const FIXP_SGL a_Im,const FIXP_SGL b_Re,const FIXP_SGL b_Im)135 inline void cplxMultDiv2(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_SGL a_Re,
136 const FIXP_SGL a_Im, const FIXP_SGL b_Re,
137 const FIXP_SGL b_Im) {
138 *c_Re = fMultDiv2(a_Re, b_Re) - fMultDiv2(a_Im, b_Im);
139 *c_Im = fMultDiv2(a_Re, b_Im) + fMultDiv2(a_Im, b_Re);
140 }
141
cplxMultDiv2(FIXP_SGL * c_Re,FIXP_SGL * c_Im,const FIXP_SGL a_Re,const FIXP_SGL a_Im,const FIXP_SGL b_Re,const FIXP_SGL b_Im)142 inline void cplxMultDiv2(FIXP_SGL *c_Re, FIXP_SGL *c_Im, const FIXP_SGL a_Re,
143 const FIXP_SGL a_Im, const FIXP_SGL b_Re,
144 const FIXP_SGL b_Im) {
145 *c_Re = FX_DBL2FX_SGL(fMultDiv2(a_Re, b_Re) - fMultDiv2(a_Im, b_Im));
146 *c_Im = FX_DBL2FX_SGL(fMultDiv2(a_Re, b_Im) + fMultDiv2(a_Im, b_Re));
147 }
148 #endif
149
150 #if !defined(FUNCTION_cplxMultDiv2_32x16)
151 #define FUNCTION_cplxMultDiv2_32x16
152
cplxMultDiv2(FIXP_DBL * c_Re,FIXP_DBL * c_Im,const FIXP_DBL a_Re,const FIXP_DBL a_Im,const FIXP_SPK w)153 inline void cplxMultDiv2(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re,
154 const FIXP_DBL a_Im, const FIXP_SPK w) {
155 cplxMultDiv2(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
156 }
157 #endif
158
159 #if !defined(FUNCTION_cplxMultDiv2_16x16)
160 #define FUNCTION_cplxMultDiv2_16x16
161
cplxMultDiv2(FIXP_DBL * c_Re,FIXP_DBL * c_Im,const FIXP_SGL a_Re,const FIXP_SGL a_Im,const FIXP_SPK w)162 inline void cplxMultDiv2(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_SGL a_Re,
163 const FIXP_SGL a_Im, const FIXP_SPK w) {
164 cplxMultDiv2(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
165 }
166
cplxMultDiv2(FIXP_SGL * c_Re,FIXP_SGL * c_Im,const FIXP_SGL a_Re,const FIXP_SGL a_Im,const FIXP_SPK w)167 inline void cplxMultDiv2(FIXP_SGL *c_Re, FIXP_SGL *c_Im, const FIXP_SGL a_Re,
168 const FIXP_SGL a_Im, const FIXP_SPK w) {
169 cplxMultDiv2(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
170 }
171 #endif
172
173 #if !defined(FUNCTION_cplxMultSubDiv2_32x16X2)
174 #define FUNCTION_cplxMultSubDiv2_32x16X2
175
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)176 inline void cplxMultSubDiv2(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re,
177 const FIXP_DBL a_Im, const FIXP_SGL b_Re,
178 const FIXP_SGL b_Im) {
179 *c_Re -= fMultDiv2(a_Re, b_Re) - fMultDiv2(a_Im, b_Im);
180 *c_Im -= fMultDiv2(a_Re, b_Im) + fMultDiv2(a_Im, b_Re);
181 }
182 #endif
183
184 #if !defined(FUNCTION_cplxMultDiv2_32x32X2)
185 #define FUNCTION_cplxMultDiv2_32x32X2
186
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)187 inline void cplxMultDiv2(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re,
188 const FIXP_DBL a_Im, const FIXP_DBL b_Re,
189 const FIXP_DBL b_Im) {
190 *c_Re = fMultDiv2(a_Re, b_Re) - fMultDiv2(a_Im, b_Im);
191 *c_Im = fMultDiv2(a_Re, b_Im) + fMultDiv2(a_Im, b_Re);
192 }
193 #endif
194
195 #if !defined(FUNCTION_cplxMultDiv2_32x32)
196 #define FUNCTION_cplxMultDiv2_32x32
197
cplxMultDiv2(FIXP_DBL * c_Re,FIXP_DBL * c_Im,const FIXP_DBL a_Re,const FIXP_DBL a_Im,const FIXP_DPK w)198 inline void cplxMultDiv2(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re,
199 const FIXP_DBL a_Im, const FIXP_DPK w) {
200 cplxMultDiv2(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
201 }
202 #endif
203
204 #if !defined(FUNCTION_cplxMultSubDiv2_32x32X2)
205 #define FUNCTION_cplxMultSubDiv2_32x32X2
206
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)207 inline void cplxMultSubDiv2(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re,
208 const FIXP_DBL a_Im, const FIXP_DBL b_Re,
209 const FIXP_DBL b_Im) {
210 *c_Re -= fMultDiv2(a_Re, b_Re) - fMultDiv2(a_Im, b_Im);
211 *c_Im -= fMultDiv2(a_Re, b_Im) + fMultDiv2(a_Im, b_Re);
212 }
213 #endif
214
215 /* #############################################################################
216 */
217
218 #if !defined(FUNCTION_cplxMult_32x16X2)
219 #define FUNCTION_cplxMult_32x16X2
220
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)221 inline void cplxMult(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re,
222 const FIXP_DBL a_Im, const FIXP_SGL b_Re,
223 const FIXP_SGL b_Im) {
224 *c_Re = fMult(a_Re, b_Re) - fMult(a_Im, b_Im);
225 *c_Im = fMult(a_Re, b_Im) + fMult(a_Im, b_Re);
226 }
cplxMult(FIXP_SGL * c_Re,FIXP_SGL * c_Im,const FIXP_SGL a_Re,const FIXP_SGL a_Im,const FIXP_SGL b_Re,const FIXP_SGL b_Im)227 inline void cplxMult(FIXP_SGL *c_Re, FIXP_SGL *c_Im, const FIXP_SGL a_Re,
228 const FIXP_SGL a_Im, const FIXP_SGL b_Re,
229 const FIXP_SGL b_Im) {
230 *c_Re = FX_DBL2FX_SGL(fMult(a_Re, b_Re) - fMult(a_Im, b_Im));
231 *c_Im = FX_DBL2FX_SGL(fMult(a_Re, b_Im) + fMult(a_Im, b_Re));
232 }
233 #endif
234
235 #if !defined(FUNCTION_cplxMult_32x16)
236 #define FUNCTION_cplxMult_32x16
237
cplxMult(FIXP_DBL * c_Re,FIXP_DBL * c_Im,const FIXP_DBL a_Re,const FIXP_DBL a_Im,const FIXP_SPK w)238 inline void cplxMult(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re,
239 const FIXP_DBL a_Im, const FIXP_SPK w) {
240 cplxMult(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
241 }
242 #endif
243
244 #if !defined(FUNCTION_cplxMult_32x32X2)
245 #define FUNCTION_cplxMult_32x32X2
246
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)247 inline void cplxMult(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re,
248 const FIXP_DBL a_Im, const FIXP_DBL b_Re,
249 const FIXP_DBL b_Im) {
250 *c_Re = fMult(a_Re, b_Re) - fMult(a_Im, b_Im);
251 *c_Im = fMult(a_Re, b_Im) + fMult(a_Im, b_Re);
252 }
253 #endif
254
255 #if !defined(FUNCTION_cplxMult_32x32)
256 #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)257 inline void cplxMult(FIXP_DBL *c_Re, FIXP_DBL *c_Im, const FIXP_DBL a_Re,
258 const FIXP_DBL a_Im, const FIXP_DPK w) {
259 cplxMult(c_Re, c_Im, a_Re, a_Im, w.v.re, w.v.im);
260 }
261 #endif
262
263 /* #############################################################################
264 */
265
266 #endif /* CPLX_MUL_H */
267