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): Stefan Gewinner
87 Description: fixed point multiplication
88
89 ******************************************************************************/
90
91 #if !defined(__FIXMUL_H__)
92 #define __FIXMUL_H__
93
94 #include "FDK_archdef.h"
95 #include "machine_type.h"
96
97
98 #if defined(__arm__)
99 #include "arm/fixmul_arm.h"
100
101 #elif defined(__mips__) /* cppp replaced: elif */
102 #include "mips/fixmul_mips.h"
103
104 #elif defined(__x86__) /* cppp replaced: elif */
105 #include "x86/fixmul_x86.h"
106
107 #endif /* all cores */
108
109 /*************************************************************************
110 *************************************************************************
111 Software fallbacks for missing functions
112 **************************************************************************
113 **************************************************************************/
114
115 #if !defined(FUNCTION_fixmuldiv2_DD)
116 #define FUNCTION_fixmuldiv2_DD
117 #if defined(_MSC_VER) || defined(__CC_ARM) || defined(__ANALOG_EXTENSIONS__) || defined(__TI_COMPILER_VERSION__)
118 #pragma message ("Extremely slow implementation of fixmuldiv2_DD !!")
119 #else
120 #warning Extremely slow implementation of fixmuldiv2_DD !!
121 #endif
fixmuldiv2_DD(const LONG a,const LONG b)122 inline LONG fixmuldiv2_DD (const LONG a, const LONG b)
123 {
124 return (LONG) ((((INT64)a) * b) >> 32) ;
125 }
126 #endif
127
128 #if !defined(FUNCTION_fixmuldiv2BitExact_DD)
129 #define FUNCTION_fixmuldiv2BitExact_DD
130 #if defined(_MSC_VER) || defined(__CC_ARM) || defined(__ANALOG_EXTENSIONS__) || defined(__TI_COMPILER_VERSION__)
131 #pragma message ("Extremely slow implementation of fixmuldiv2BitExact_DD !!")
132 #else
133 #warning Extremely slow implementation of fixmuldiv2BitExact_DD !!
134 #endif
fixmuldiv2BitExact_DD(const LONG a,const LONG b)135 inline LONG fixmuldiv2BitExact_DD (const LONG a, const LONG b)
136 {
137 return (LONG) ((((INT64)a) * b) >> 32) ;
138 }
139 #endif
140
141 #if !defined(FUNCTION_fixmul_DD)
142 #define FUNCTION_fixmul_DD
fixmul_DD(const LONG a,const LONG b)143 inline LONG fixmul_DD (const LONG a, const LONG b)
144 { return fixmuldiv2_DD (a, b) << 1 ; }
145 #endif
146
147 #if !defined(FUNCTION_fixmulBitExact_DD)
148 #define FUNCTION_fixmulBitExact_DD
149 #if defined(_MSC_VER) || defined(__CC_ARM) || defined(__ANALOG_EXTENSIONS__) || defined(__TI_COMPILER_VERSION__) || defined(__XTENSA__)
150 #pragma message ("Extremely slow implementation of fixmulBitExact_DD !!")
151 #else
152 #warning Extremely slow implementation of fixmulBitExact_DD !!
153 #endif
fixmulBitExact_DD(const LONG a,const LONG b)154 inline LONG fixmulBitExact_DD (const LONG a, const LONG b)
155 {
156 return ( (LONG) ((((INT64)a) * b) >> 32) ) << 1;
157 }
158 #endif
159
160 #if !defined(FUNCTION_fixmuldiv2_SS)
161 #define FUNCTION_fixmuldiv2_SS
fixmuldiv2_SS(const SHORT a,const SHORT b)162 inline LONG fixmuldiv2_SS (const SHORT a, const SHORT b)
163 { return ((LONG)a*b); }
164 #endif
165
166 #if !defined(FUNCTION_fixmul_SS)
167 #define FUNCTION_fixmul_SS
fixmul_SS(const SHORT a,const SHORT b)168 inline LONG fixmul_SS (const SHORT a, const SHORT b)
169 { return (a*b) <<1; }
170 #endif
171
172 #if !defined(FUNCTION_fixmuldiv2_SD)
173 #define FUNCTION_fixmuldiv2_SD
fixmuldiv2_SD(const SHORT a,const LONG b)174 inline LONG fixmuldiv2_SD (const SHORT a, const LONG b)
175 #ifdef FUNCTION_fixmuldiv2_DS
176 { return fixmuldiv2_DS(b, a); }
177 #else
178 { return fixmuldiv2_DD(FX_SGL2FX_DBL(a), b); }
179 #endif
180 #endif
181
182 #if !defined(FUNCTION_fixmuldiv2_DS)
183 #define FUNCTION_fixmuldiv2_DS
fixmuldiv2_DS(const LONG a,const SHORT b)184 inline LONG fixmuldiv2_DS (const LONG a, const SHORT b)
185 #ifdef FUNCTION_fixmuldiv2_SD
186 { return fixmuldiv2_SD(b, a); }
187 #else
188 { return fixmuldiv2_DD(a, FX_SGL2FX_DBL(b)); }
189 #endif
190 #endif
191
192 #if !defined(FUNCTION_fixmuldiv2BitExact_SD)
193 #define FUNCTION_fixmuldiv2BitExact_SD
fixmuldiv2BitExact_SD(const SHORT a,const LONG b)194 inline LONG fixmuldiv2BitExact_SD (const SHORT a, const LONG b)
195 #ifdef FUNCTION_fixmuldiv2BitExact_DS
196 { return fixmuldiv2BitExact_DS(b, a); }
197 #else
198 { return (LONG) ((((INT64)a) * b) >> 16) ; }
199 #endif
200 #endif
201
202 #if !defined(FUNCTION_fixmuldiv2BitExact_DS)
203 #define FUNCTION_fixmuldiv2BitExact_DS
fixmuldiv2BitExact_DS(const LONG a,const SHORT b)204 inline LONG fixmuldiv2BitExact_DS (const LONG a, const SHORT b)
205 #ifdef FUNCTION_fixmuldiv2BitExact_SD
206 { return fixmuldiv2BitExact_SD(b, a); }
207 #else
208 { return (LONG) ((((INT64)a) * b) >> 16) ; }
209 #endif
210 #endif
211
212 #if !defined(FUNCTION_fixmul_SD)
213 #define FUNCTION_fixmul_SD
fixmul_SD(const SHORT a,const LONG b)214 inline LONG fixmul_SD (const SHORT a, const LONG b) {
215 #ifdef FUNCTION_fixmul_DS
216 return fixmul_SD(b, a);
217 #else
218 return fixmuldiv2_SD (a, b) << 1 ;
219 #endif
220 }
221 #endif
222
223 #if !defined(FUNCTION_fixmul_DS)
224 #define FUNCTION_fixmul_DS
fixmul_DS(const LONG a,const SHORT b)225 inline LONG fixmul_DS (const LONG a, const SHORT b) {
226 #ifdef FUNCTION_fixmul_SD
227 return fixmul_SD(b, a);
228 #else
229 return fixmuldiv2_DS(a, b) << 1 ;
230 #endif
231 }
232 #endif
233
234 #if !defined(FUNCTION_fixmulBitExact_SD)
235 #define FUNCTION_fixmulBitExact_SD
fixmulBitExact_SD(const SHORT a,const LONG b)236 inline LONG fixmulBitExact_SD (const SHORT a, const LONG b)
237 #ifdef FUNCTION_fixmulBitExact_DS
238 { return fixmulBitExact_DS(b, a); }
239 #else
240 { return (LONG) (((((INT64)a) * b) >> 16) << 1); }
241 #endif
242 #endif
243
244 #if !defined(FUNCTION_fixmulBitExact_DS)
245 #define FUNCTION_fixmulBitExact_DS
fixmulBitExact_DS(const LONG a,const SHORT b)246 inline LONG fixmulBitExact_DS (const LONG a, const SHORT b)
247 #ifdef FUNCTION_fixmulBitExact_SD
248 { return fixmulBitExact_SD(b, a); }
249 #else
250 { return (LONG) (((((INT64)a) * b) >> 16) << 1); }
251 #endif
252 #endif
253
254
255 #if !defined(FUNCTION_fixpow2div2_D)
256 #ifdef ARCH_WA_16BITMULT
257 #error Fallback for fixpow2div2_D is not 16 bit safe !
258 #endif
259 #define FUNCTION_fixpow2div2_D
fixpow2div2_D(const LONG a)260 inline LONG fixpow2div2_D (const LONG a)
261 { return fixmuldiv2_DD(a, a); }
262 #endif
263
264 #if !defined(FUNCTION_fixpow2_D)
265 #ifdef ARCH_WA_16BITMULT
266 #error Fallback for fixpow2_D is not 16 bit safe !
267 #endif
268 #define FUNCTION_fixpow2_D
fixpow2_D(const LONG a)269 inline LONG fixpow2_D (const LONG a)
270 { return fixpow2div2_D(a)<<1; }
271 #endif
272
273 #if !defined(FUNCTION_fixpow2div2_S)
274 #define FUNCTION_fixpow2div2_S
fixpow2div2_S(const SHORT a)275 inline LONG fixpow2div2_S (const SHORT a)
276 { return fixmuldiv2_SS(a, a); }
277 #endif
278
279 #if !defined(FUNCTION_fixpow2_S)
280 #define FUNCTION_fixpow2_S
fixpow2_S(const SHORT a)281 inline LONG fixpow2_S (const SHORT a)
282 { return fixpow2div2_S(a)<<1; }
283 #endif
284
285
286 #endif /* __FIXMUL_H__ */
287