1 /* -----------------------------------------------------------------------------
2 Software License for The Fraunhofer FDK AAC Codec Library for Android
3
4 © Copyright 1995 - 2019 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 /*********************** MPEG surround decoder library *************************
96
97 Author(s):
98
99 Description: SAC Dec tables
100
101 *******************************************************************************/
102
103 #ifndef SAC_ROM_H
104 #define SAC_ROM_H
105
106 #include "FDK_archdef.h"
107 #include "sac_dec_interface.h"
108
109 #include "huff_nodes.h"
110 #include "sac_bitdec.h"
111 #include "machine_type.h"
112
113 /* Global ROM table data type: */
114 #define FIXP_CFG FIXP_DBL
115 #define FX_CFG2FX_DBL
116 #define FX_CFG2FX_SGL FX_DBL2FX_SGL
117 #define CFG(a) FIXP_DBL(a)
118 #define FL2FXCONST_CFG FL2FXCONST_DBL
119 #define FX_DBL2FX_CFG(x) ((FIXP_DBL)(x))
120
121 /* others */
122 #define SCALE_INV_ICC (2)
123 #define G_dd_SCALE (2)
124
125 #define QCC_SCALE 1
126 #define M1M2_DATA FIXP_DBL
127 #define M1M2_CDATA FIXP_DBL
128 #define M1M2_CDATA2FX_DBL(a) (a)
129 #define FX_DBL2M1M2_CDATA(a) (a)
130
131 #define CLIP_PROTECT_GAIN_0(x) FL2FXCONST_CFG(((x) / (float)(1 << 0)))
132 #define CLIP_PROTECT_GAIN_1(x) FL2FXCONST_CFG(((x) / (float)(1 << 1)))
133 #define CLIP_PROTECT_GAIN_2(x) FL2FXCONST_CFG(((x) / (float)(1 << 2)))
134
135 #define SF_CLD_C1C2 (9)
136
137 extern const FIXP_CFG dequantCPC__FDK[];
138 extern const FIXP_CFG dequantICC__FDK[8];
139 extern const FIXP_CFG dequantCLD__FDK[31];
140
141 #define IPD_SCALE (5)
142 #define PI__IPD (FL2FXCONST_DBL(3.1415926535897932f / (float)(1 << IPD_SCALE)))
143 /* Define for PI*2 for better precision in SpatialDecApplyPhase() */
144 #define PIx2__IPD \
145 (FL2FXCONST_DBL(3.1415926535897932f / (float)(1 << (IPD_SCALE - 1))))
146
147 extern const FIXP_CFG dequantIPD__FDK[16];
148 extern const FIXP_DBL dequantIPD_CLD_ICC_splitAngle__FDK[15][31][8];
149
150 extern const FIXP_CFG H11_nc[31][8];
151 extern const FIXP_CFG H12_nc[31][8];
152
153 extern const FIXP_DBL dequantCLD_c1[31];
154
155 extern const FIXP_CFG BP__FDK[];
156 extern const FIXP_CFG BP_GF__FDK[];
157 extern const SCHAR row2channelSTP[][MAX_M2_INPUT];
158
159 /* sac_bitdec */
160 extern const INT samplingFreqTable[16];
161 extern const UCHAR freqResTable[];
162 extern const UCHAR freqResTable_LD[];
163 extern const UCHAR tempShapeChanTable[2][8];
164 extern const TREEPROPERTIES treePropertyTable[];
165
166 extern const SCHAR kernels_4_to_71[MAX_HYBRID_BANDS];
167 extern const SCHAR kernels_5_to_71[MAX_HYBRID_BANDS];
168 extern const SCHAR kernels_7_to_71[MAX_HYBRID_BANDS];
169 extern const SCHAR kernels_10_to_71[MAX_HYBRID_BANDS];
170 extern const SCHAR kernels_14_to_71[MAX_HYBRID_BANDS];
171 extern const SCHAR kernels_20_to_71[MAX_HYBRID_BANDS];
172 extern const SCHAR kernels_28_to_71[MAX_HYBRID_BANDS];
173
174 extern const UCHAR mapping_4_to_28[MAX_PARAMETER_BANDS];
175 extern const UCHAR mapping_5_to_28[MAX_PARAMETER_BANDS];
176 extern const UCHAR mapping_7_to_28[MAX_PARAMETER_BANDS];
177 extern const UCHAR mapping_10_to_28[MAX_PARAMETER_BANDS];
178 extern const UCHAR mapping_14_to_28[MAX_PARAMETER_BANDS];
179 extern const UCHAR mapping_20_to_28[MAX_PARAMETER_BANDS];
180 extern const SCHAR kernels_4_to_64[MAX_HYBRID_BANDS];
181 extern const SCHAR kernels_5_to_64[MAX_HYBRID_BANDS];
182 extern const SCHAR kernels_7_to_64[MAX_HYBRID_BANDS];
183 extern const SCHAR kernels_9_to_64[MAX_HYBRID_BANDS];
184 extern const SCHAR kernels_12_to_64[MAX_HYBRID_BANDS];
185 extern const SCHAR kernels_15_to_64[MAX_HYBRID_BANDS];
186 extern const SCHAR kernels_23_to_64[MAX_HYBRID_BANDS];
187
188 extern const UCHAR mapping_15_to_23[MAX_PARAMETER_BANDS_LD];
189 extern const UCHAR mapping_12_to_23[MAX_PARAMETER_BANDS_LD];
190 extern const UCHAR mapping_9_to_23[MAX_PARAMETER_BANDS_LD];
191 extern const UCHAR mapping_7_to_23[MAX_PARAMETER_BANDS_LD];
192 extern const UCHAR mapping_5_to_23[MAX_PARAMETER_BANDS_LD];
193 extern const UCHAR mapping_4_to_23[MAX_PARAMETER_BANDS_LD];
194
195 extern const FIXP_CFG clipGainTable__FDK[];
196 extern const UCHAR clipGainSFTable__FDK[];
197
198 extern const UCHAR pbStrideTable[];
199 extern const int smgTimeTable[];
200
201 extern const FIXP_CFG envShapeDataTable__FDK[5][2];
202 extern const SCHAR row2channelGES[][MAX_M2_INPUT];
203
204 /* sac_calcM1andM2 */
205 extern const SCHAR row2residual[][MAX_M2_INPUT];
206
207 void SpatialDequantGetCLDValues(int index, FIXP_DBL* cu, FIXP_DBL* cl);
208
209 void SpatialDequantGetCLD2Values(int index, FIXP_DBL* x);
210
211 /* External helper functions */
SacGetHybridSubbands(int qmfSubbands)212 static inline int SacGetHybridSubbands(int qmfSubbands) {
213 return qmfSubbands - MAX_QMF_BANDS_TO_HYBRID + 10;
214 }
215
216 #endif /* SAC_ROM_H */
217