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(FIXMADD_ARM_H)
104 #define FIXMADD_ARM_H
105
106 #if defined(__arm__)
107
108 /* #############################################################################
109 */
110 #if defined(__GNUC__) && defined(__arm__)
111 /* #############################################################################
112 */
113 /* ARM GNU GCC */
114
115 #ifdef __ARM_ARCH_8__
116 #define FUNCTION_fixmadddiv2_DD
117 #ifdef FUNCTION_fixmadddiv2_DD
fixmadddiv2_DD(FIXP_DBL x,const FIXP_DBL a,const FIXP_DBL b)118 inline FIXP_DBL fixmadddiv2_DD(FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b) {
119 INT64 result;
120 asm("smull %x0, %w1, %w2; \n"
121 "asr %x0, %x0, #32; \n"
122 "add %w0, %w3, %w0; \n"
123 : "=&r"(result)
124 : "r"(a), "r"(b), "r"(x));
125 return (INT)result;
126 }
127 #endif /* #ifdef FUNCTION_fixmadddiv2_DD */
128
129 #define FUNCTION_fixmsubdiv2_DD
130 #ifdef FUNCTION_fixmsubdiv2_DD
fixmsubdiv2_DD(FIXP_DBL x,const FIXP_DBL a,const FIXP_DBL b)131 inline FIXP_DBL fixmsubdiv2_DD(FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b) {
132 INT64 result;
133 asm("smull %x0, %w1, %w2; \n"
134 "asr %x0, %x0, #32; \n"
135 "sub %w0, %w3, %w0; \n"
136 : "=&r"(result)
137 : "r"(a), "r"(b), "r"(x));
138 return (INT)result;
139 }
140 #endif /* #ifdef FUNCTION_fixmsubdiv2_DD */
141
142 #elif defined(__ARM_ARCH_6__)
143 #define FUNCTION_fixmadddiv2_DD
144 #ifdef FUNCTION_fixmadddiv2_DD
fixmadddiv2_DD(FIXP_DBL x,const FIXP_DBL a,const FIXP_DBL b)145 inline FIXP_DBL fixmadddiv2_DD(FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b) {
146 INT result;
147 asm("smmla %0, %1, %2, %3;\n" : "=r"(result) : "r"(a), "r"(b), "r"(x));
148 return result;
149 }
150 #endif /* #ifdef FUNCTION_fixmadddiv2_DD */
151
152 #define FUNCTION_fixmsubdiv2_DD
153 #ifdef FUNCTION_fixmsubdiv2_DD
fixmsubdiv2_DD(FIXP_DBL x,const FIXP_DBL a,const FIXP_DBL b)154 inline FIXP_DBL fixmsubdiv2_DD(FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b) {
155 INT result;
156 asm("smmls %0, %1, %2, %3;\n" : "=r"(result) : "r"(a), "r"(b), "r"(x));
157 return result;
158 }
159 #endif /* #ifdef FUNCTION_fixmsubdiv2_DD */
160
161 #else
162 #define FUNCTION_fixmadddiv2_DD
163 #ifdef FUNCTION_fixmadddiv2_DD
fixmadddiv2_DD(FIXP_DBL x,const FIXP_DBL a,const FIXP_DBL b)164 inline FIXP_DBL fixmadddiv2_DD(FIXP_DBL x, const FIXP_DBL a, const FIXP_DBL b) {
165 INT discard = 0;
166 INT result = x;
167 asm("smlal %0, %1, %2, %3;\n" : "+r"(discard), "+r"(result) : "r"(a), "r"(b));
168 return result;
169 }
170 #endif /* #ifdef FUNCTION_fixmadddiv2_DD */
171 #endif
172
173 #if defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_6__)
174
175 #define FUNCTION_fixmadddiv2_DS
176 #ifdef FUNCTION_fixmadddiv2_DS
fixmadddiv2_DS(FIXP_DBL x,const FIXP_DBL a,const FIXP_SGL b)177 inline FIXP_DBL fixmadddiv2_DS(FIXP_DBL x, const FIXP_DBL a, const FIXP_SGL b) {
178 INT result;
179 asm("smlawb %0, %1, %2, %3 " : "=r"(result) : "r"(a), "r"(b), "r"(x));
180 return result;
181 }
182 #endif /* #ifdef FUNCTION_fixmadddiv2_DS */
183
184 #endif /* defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_6__) */
185
186 #define FUNCTION_fixmadddiv2BitExact_DD
187 #ifdef FUNCTION_fixmadddiv2BitExact_DD
188 #define fixmadddiv2BitExact_DD(a, b, c) fixmadddiv2_DD(a, b, c)
189 #endif /* #ifdef FUNCTION_fixmadddiv2BitExact_DD */
190
191 #define FUNCTION_fixmsubdiv2BitExact_DD
192 #ifdef FUNCTION_fixmsubdiv2BitExact_DD
fixmsubdiv2BitExact_DD(FIXP_DBL x,const FIXP_DBL a,const FIXP_DBL b)193 inline FIXP_DBL fixmsubdiv2BitExact_DD(FIXP_DBL x, const FIXP_DBL a,
194 const FIXP_DBL b) {
195 return x - fixmuldiv2BitExact_DD(a, b);
196 }
197 #endif /* #ifdef FUNCTION_fixmsubdiv2BitExact_DD */
198
199 #define FUNCTION_fixmadddiv2BitExact_DS
200 #ifdef FUNCTION_fixmadddiv2BitExact_DS
201 #define fixmadddiv2BitExact_DS(a, b, c) fixmadddiv2_DS(a, b, c)
202 #endif /* #ifdef FUNCTION_fixmadddiv2BitExact_DS */
203
204 #define FUNCTION_fixmsubdiv2BitExact_DS
205 #ifdef FUNCTION_fixmsubdiv2BitExact_DS
fixmsubdiv2BitExact_DS(FIXP_DBL x,const FIXP_DBL a,const FIXP_SGL b)206 inline FIXP_DBL fixmsubdiv2BitExact_DS(FIXP_DBL x, const FIXP_DBL a,
207 const FIXP_SGL b) {
208 return x - fixmuldiv2BitExact_DS(a, b);
209 }
210 #endif /* #ifdef FUNCTION_fixmsubdiv2BitExact_DS */
211
212 /* #############################################################################
213 */
214 #endif /* toolchain */
215 /* #############################################################################
216 */
217
218 #endif /* __arm__ */
219
220 #endif /* !defined(FIXMADD_ARM_H) */
221