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): M. Lohwasser, M. Gayer
98
99 Description: fixed point intrinsics
100
101 *******************************************************************************/
102
103 #if !defined(FIXMADD_H)
104 #define FIXMADD_H
105
106 #include "FDK_archdef.h"
107 #include "machine_type.h"
108 #include "fixmul.h"
109
110 #if defined(__arm__)
111 #include "arm/fixmadd_arm.h"
112
113 #endif /* all cores */
114
115 /*************************************************************************
116 *************************************************************************
117 Software fallbacks for missing functions.
118 **************************************************************************
119 **************************************************************************/
120
121 /* Divide by two versions. */
122
123 #if !defined(FUNCTION_fixmadddiv2_DD)
fixmadddiv2_DD(FIXP_DBL x,const FIXP_DBL a,const FIXP_DBL b)124 inline FIXP_DBL fixmadddiv2_DD(FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b) {
125 return (x + fMultDiv2(a, b));
126 }
127 #endif
128
129 #if !defined(FUNCTION_fixmadddiv2_SD)
fixmadddiv2_SD(FIXP_DBL x,const FIXP_SGL a,const FIXP_DBL b)130 inline FIXP_DBL fixmadddiv2_SD(FIXP_DBL x, const FIXP_SGL a, const FIXP_DBL b) {
131 #ifdef FUNCTION_fixmadddiv2_DS
132 return fixmadddiv2_DS(x, b, a);
133 #else
134 return fixmadddiv2_DD(x, FX_SGL2FX_DBL(a), b);
135 #endif
136 }
137 #endif
138
139 #if !defined(FUNCTION_fixmadddiv2_DS)
fixmadddiv2_DS(FIXP_DBL x,const FIXP_DBL a,const FIXP_SGL b)140 inline FIXP_DBL fixmadddiv2_DS(FIXP_DBL x, const FIXP_DBL a, const FIXP_SGL b) {
141 #ifdef FUNCTION_fixmadddiv2_SD
142 return fixmadddiv2_SD(x, b, a);
143 #else
144 return fixmadddiv2_DD(x, a, FX_SGL2FX_DBL(b));
145 #endif
146 }
147 #endif
148
149 #if !defined(FUNCTION_fixmadddiv2_SS)
fixmadddiv2_SS(FIXP_DBL x,const FIXP_SGL a,const FIXP_SGL b)150 inline FIXP_DBL fixmadddiv2_SS(FIXP_DBL x, const FIXP_SGL a, const FIXP_SGL b) {
151 return x + fMultDiv2(a, b);
152 }
153 #endif
154
155 #if !defined(FUNCTION_fixmsubdiv2_DD)
fixmsubdiv2_DD(FIXP_DBL x,const FIXP_DBL a,const FIXP_DBL b)156 inline FIXP_DBL fixmsubdiv2_DD(FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b) {
157 return (x - fMultDiv2(a, b));
158 }
159 #endif
160
161 #if !defined(FUNCTION_fixmsubdiv2_SD)
fixmsubdiv2_SD(FIXP_DBL x,const FIXP_SGL a,const FIXP_DBL b)162 inline FIXP_DBL fixmsubdiv2_SD(FIXP_DBL x, const FIXP_SGL a, const FIXP_DBL b) {
163 #ifdef FUNCTION_fixmsubdiv2_DS
164 return fixmsubdiv2_DS(x, b, a);
165 #else
166 return fixmsubdiv2_DD(x, FX_SGL2FX_DBL(a), b);
167 #endif
168 }
169 #endif
170
171 #if !defined(FUNCTION_fixmsubdiv2_DS)
fixmsubdiv2_DS(FIXP_DBL x,const FIXP_DBL a,const FIXP_SGL b)172 inline FIXP_DBL fixmsubdiv2_DS(FIXP_DBL x, const FIXP_DBL a, const FIXP_SGL b) {
173 #ifdef FUNCTION_fixmsubdiv2_SD
174 return fixmsubdiv2_SD(x, b, a);
175 #else
176 return fixmsubdiv2_DD(x, a, FX_SGL2FX_DBL(b));
177 #endif
178 }
179 #endif
180
181 #if !defined(FUNCTION_fixmsubdiv2_SS)
fixmsubdiv2_SS(FIXP_DBL x,const FIXP_SGL a,const FIXP_SGL b)182 inline FIXP_DBL fixmsubdiv2_SS(FIXP_DBL x, const FIXP_SGL a, const FIXP_SGL b) {
183 return x - fMultDiv2(a, b);
184 }
185 #endif
186
187 #if !defined(FUNCTION_fixmadddiv2BitExact_DD)
188 #define FUNCTION_fixmadddiv2BitExact_DD
fixmadddiv2BitExact_DD(FIXP_DBL x,const FIXP_DBL a,const FIXP_DBL b)189 inline FIXP_DBL fixmadddiv2BitExact_DD(FIXP_DBL x, const FIXP_DBL a,
190 const FIXP_DBL b) {
191 return x + fMultDiv2BitExact(a, b);
192 }
193 #endif
194 #if !defined(FUNCTION_fixmadddiv2BitExact_SD)
195 #define FUNCTION_fixmadddiv2BitExact_SD
fixmadddiv2BitExact_SD(FIXP_DBL x,const FIXP_SGL a,const FIXP_DBL b)196 inline FIXP_DBL fixmadddiv2BitExact_SD(FIXP_DBL x, const FIXP_SGL a,
197 const FIXP_DBL b) {
198 #ifdef FUNCTION_fixmadddiv2BitExact_DS
199 return fixmadddiv2BitExact_DS(x, b, a);
200 #else
201 return x + fMultDiv2BitExact(a, b);
202 #endif
203 }
204 #endif
205 #if !defined(FUNCTION_fixmadddiv2BitExact_DS)
206 #define FUNCTION_fixmadddiv2BitExact_DS
fixmadddiv2BitExact_DS(FIXP_DBL x,const FIXP_DBL a,const FIXP_SGL b)207 inline FIXP_DBL fixmadddiv2BitExact_DS(FIXP_DBL x, const FIXP_DBL a,
208 const FIXP_SGL b) {
209 #ifdef FUNCTION_fixmadddiv2BitExact_SD
210 return fixmadddiv2BitExact_SD(x, b, a);
211 #else
212 return x + fMultDiv2BitExact(a, b);
213 #endif
214 }
215 #endif
216
217 #if !defined(FUNCTION_fixmsubdiv2BitExact_DD)
218 #define FUNCTION_fixmsubdiv2BitExact_DD
fixmsubdiv2BitExact_DD(FIXP_DBL x,const FIXP_DBL a,const FIXP_DBL b)219 inline FIXP_DBL fixmsubdiv2BitExact_DD(FIXP_DBL x, const FIXP_DBL a,
220 const FIXP_DBL b) {
221 return x - fMultDiv2BitExact(a, b);
222 }
223 #endif
224 #if !defined(FUNCTION_fixmsubdiv2BitExact_SD)
225 #define FUNCTION_fixmsubdiv2BitExact_SD
fixmsubdiv2BitExact_SD(FIXP_DBL x,const FIXP_SGL a,const FIXP_DBL b)226 inline FIXP_DBL fixmsubdiv2BitExact_SD(FIXP_DBL x, const FIXP_SGL a,
227 const FIXP_DBL b) {
228 #ifdef FUNCTION_fixmsubdiv2BitExact_DS
229 return fixmsubdiv2BitExact_DS(x, b, a);
230 #else
231 return x - fMultDiv2BitExact(a, b);
232 #endif
233 }
234 #endif
235 #if !defined(FUNCTION_fixmsubdiv2BitExact_DS)
236 #define FUNCTION_fixmsubdiv2BitExact_DS
fixmsubdiv2BitExact_DS(FIXP_DBL x,const FIXP_DBL a,const FIXP_SGL b)237 inline FIXP_DBL fixmsubdiv2BitExact_DS(FIXP_DBL x, const FIXP_DBL a,
238 const FIXP_SGL b) {
239 #ifdef FUNCTION_fixmsubdiv2BitExact_SD
240 return fixmsubdiv2BitExact_SD(x, b, a);
241 #else
242 return x - fMultDiv2BitExact(a, b);
243 #endif
244 }
245 #endif
246
247 /* Normal versions */
248
249 #if !defined(FUNCTION_fixmadd_DD)
fixmadd_DD(FIXP_DBL x,const FIXP_DBL a,const FIXP_DBL b)250 inline FIXP_DBL fixmadd_DD(FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b) {
251 return fixmadddiv2_DD(x, a, b) << 1;
252 }
253 #endif
254 #if !defined(FUNCTION_fixmadd_SD)
fixmadd_SD(FIXP_DBL x,const FIXP_SGL a,const FIXP_DBL b)255 inline FIXP_DBL fixmadd_SD(FIXP_DBL x, const FIXP_SGL a, const FIXP_DBL b) {
256 #ifdef FUNCTION_fixmadd_DS
257 return fixmadd_DS(x, b, a);
258 #else
259 return fixmadd_DD(x, FX_SGL2FX_DBL(a), b);
260 #endif
261 }
262 #endif
263 #if !defined(FUNCTION_fixmadd_DS)
fixmadd_DS(FIXP_DBL x,const FIXP_DBL a,const FIXP_SGL b)264 inline FIXP_DBL fixmadd_DS(FIXP_DBL x, const FIXP_DBL a, const FIXP_SGL b) {
265 #ifdef FUNCTION_fixmadd_SD
266 return fixmadd_SD(x, b, a);
267 #else
268 return fixmadd_DD(x, a, FX_SGL2FX_DBL(b));
269 #endif
270 }
271 #endif
272 #if !defined(FUNCTION_fixmadd_SS)
fixmadd_SS(FIXP_DBL x,const FIXP_SGL a,const FIXP_SGL b)273 inline FIXP_DBL fixmadd_SS(FIXP_DBL x, const FIXP_SGL a, const FIXP_SGL b) {
274 return (x + fMultDiv2(a, b)) << 1;
275 }
276 #endif
277
278 #if !defined(FUNCTION_fixmsub_DD)
fixmsub_DD(FIXP_DBL x,const FIXP_DBL a,const FIXP_DBL b)279 inline FIXP_DBL fixmsub_DD(FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b) {
280 return fixmsubdiv2_DD(x, a, b) << 1;
281 }
282 #endif
283 #if !defined(FUNCTION_fixmsub_SD)
fixmsub_SD(FIXP_DBL x,const FIXP_SGL a,const FIXP_DBL b)284 inline FIXP_DBL fixmsub_SD(FIXP_DBL x, const FIXP_SGL a, const FIXP_DBL b) {
285 #ifdef FUNCTION_fixmsub_DS
286 return fixmsub_DS(x, b, a);
287 #else
288 return fixmsub_DD(x, FX_SGL2FX_DBL(a), b);
289 #endif
290 }
291 #endif
292 #if !defined(FUNCTION_fixmsub_DS)
fixmsub_DS(FIXP_DBL x,const FIXP_DBL a,const FIXP_SGL b)293 inline FIXP_DBL fixmsub_DS(FIXP_DBL x, const FIXP_DBL a, const FIXP_SGL b) {
294 #ifdef FUNCTION_fixmsub_SD
295 return fixmsub_SD(x, b, a);
296 #else
297 return fixmsub_DD(x, a, FX_SGL2FX_DBL(b));
298 #endif
299 }
300 #endif
301 #if !defined(FUNCTION_fixmsub_SS)
fixmsub_SS(FIXP_DBL x,const FIXP_SGL a,const FIXP_SGL b)302 inline FIXP_DBL fixmsub_SS(FIXP_DBL x, const FIXP_SGL a, const FIXP_SGL b) {
303 return (x - fMultDiv2(a, b)) << 1;
304 }
305 #endif
306
307 #if !defined(FUNCTION_fixpow2adddiv2_D)
308 #ifdef FUNCTION_fixmadddiv2_DD
309 #define fixpadddiv2_D(x, a) fixmadddiv2_DD(x, a, a)
310 #else
fixpadddiv2_D(FIXP_DBL x,const FIXP_DBL a)311 inline INT fixpadddiv2_D(FIXP_DBL x, const FIXP_DBL a) {
312 return (x + fPow2Div2(a));
313 }
314 #endif
315 #endif
316 #if !defined(FUNCTION_fixpow2add_D)
fixpadd_D(FIXP_DBL x,const FIXP_DBL a)317 inline INT fixpadd_D(FIXP_DBL x, const FIXP_DBL a) { return (x + fPow2(a)); }
318 #endif
319
320 #if !defined(FUNCTION_fixpow2adddiv2_S)
321 #ifdef FUNCTION_fixmadddiv2_SS
322 #define fixpadddiv2_S(x, a) fixmadddiv2_SS(x, a, a)
323 #else
fixpadddiv2_S(FIXP_DBL x,const FIXP_SGL a)324 inline INT fixpadddiv2_S(FIXP_DBL x, const FIXP_SGL a) {
325 return (x + fPow2Div2(a));
326 }
327 #endif
328 #endif
329 #if !defined(FUNCTION_fixpow2add_S)
fixpadd_S(FIXP_DBL x,const FIXP_SGL a)330 inline INT fixpadd_S(FIXP_DBL x, const FIXP_SGL a) { return (x + fPow2(a)); }
331 #endif
332
333 #endif /* FIXMADD_H */
334