1/* -----------------------------------------------------------------------------
2Software License for The Fraunhofer FDK AAC Codec Library for Android
3
4© Copyright  1995 - 2018 Fraunhofer-Gesellschaft zur Förderung der angewandten
5Forschung e.V. All rights reserved.
6
7 1.    INTRODUCTION
8The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software
9that implements the MPEG Advanced Audio Coding ("AAC") encoding and decoding
10scheme for digital audio. This FDK AAC Codec software is intended to be used on
11a wide variety of Android devices.
12
13AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient
14general perceptual audio codecs. AAC-ELD is considered the best-performing
15full-bandwidth communications codec by independent studies and is widely
16deployed. AAC has been standardized by ISO and IEC as part of the MPEG
17specifications.
18
19Patent licenses for necessary patent claims for the FDK AAC Codec (including
20those of Fraunhofer) may be obtained through Via Licensing
21(www.vialicensing.com) or through the respective patent owners individually for
22the purpose of encoding or decoding bit streams in products that are compliant
23with the ISO/IEC MPEG audio standards. Please note that most manufacturers of
24Android devices already license these patent claims through Via Licensing or
25directly from the patent owners, and therefore FDK AAC Codec software may
26already be covered under those patent licenses when it is used for those
27licensed purposes only.
28
29Commercially-licensed AAC software libraries, including floating-point versions
30with enhanced sound quality, are also available from Fraunhofer. Users are
31encouraged to check the Fraunhofer website for additional applications
32information and documentation.
33
342.    COPYRIGHT LICENSE
35
36Redistribution and use in source and binary forms, with or without modification,
37are permitted without payment of copyright license fees provided that you
38satisfy the following conditions:
39
40You must retain the complete text of this software license in redistributions of
41the FDK AAC Codec or your modifications thereto in source code form.
42
43You must retain the complete text of this software license in the documentation
44and/or other materials provided with redistributions of the FDK AAC Codec or
45your modifications thereto in binary form. You must make available free of
46charge copies of the complete source code of the FDK AAC Codec and your
47modifications thereto to recipients of copies in binary form.
48
49The name of Fraunhofer may not be used to endorse or promote products derived
50from this library without prior written permission.
51
52You may not charge copyright license fees for anyone to use, copy or distribute
53the FDK AAC Codec software or your modifications thereto.
54
55Your modified versions of the FDK AAC Codec must carry prominent notices stating
56that you changed the software and the date of any change. For modified versions
57of the FDK AAC Codec, the term "Fraunhofer FDK AAC Codec Library for Android"
58must be replaced by the term "Third-Party Modified Version of the Fraunhofer FDK
59AAC Codec Library for Android."
60
613.    NO PATENT LICENSE
62
63NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without
64limitation the patents of Fraunhofer, ARE GRANTED BY THIS SOFTWARE LICENSE.
65Fraunhofer provides no warranty of patent non-infringement with respect to this
66software.
67
68You may use this FDK AAC Codec software or modifications thereto only for
69purposes that are authorized by appropriate patent licenses.
70
714.    DISCLAIMER
72
73This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright
74holders and contributors "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,
75including but not limited to the implied warranties of merchantability and
76fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
77CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary,
78or consequential damages, including but not limited to procurement of substitute
79goods or services; loss of use, data, or profits, or business interruption,
80however caused and on any theory of liability, whether in contract, strict
81liability, or tort (including negligence), arising in any way out of the use of
82this software, even if advised of the possibility of such damage.
83
845.    CONTACT INFORMATION
85
86Fraunhofer Institute for Integrated Circuits IIS
87Attention: Audio and Multimedia Departments - FDK AAC LL
88Am Wolfsmantel 33
8991058 Erlangen, Germany
90
91www.iis.fraunhofer.de/amm
92amm-info@iis.fraunhofer.de
93----------------------------------------------------------------------------- */
94
95/*********************** MPEG surround encoder library *************************
96
97   Author(s):   Markus Lohwasser
98
99   Description: SAC-Encoder constant huffman tables
100
101*******************************************************************************/
102
103#ifndef SACENC_HUFF_TAB_H
104#define SACENC_HUFF_TAB_H
105
106/* Includes ******************************************************************/
107#include "machine_type.h"
108
109/* Defines *******************************************************************/
110#define HUFF_PACK(a, b)                                    \
111  {                                                        \
112    ((((ULONG)a) & 0x00FFFFFF) << 8) | (((ULONG)b) & 0xFF) \
113  } /*!< Pack huffman value and length information. */
114#define HUFF_VALUE(a)                                                         \
115  (((a.packed >> 8) & 0x00FFFFFF)) /*!< Return value from packed table entry. \
116                                    */
117#define HUFF_LENGTH(a) \
118  ((a.packed & 0xFF)) /*!< Return length from packed table entry. */
119
120/* Data Types ****************************************************************/
121/**
122 * \brief  This struct contains packed huffman entries.
123 *
124 * The packed entry consist of hffman value and length information.
125 *
126 *   |---------------------------------|
127 *   |         value          | length |
128 *   |---------------------------------|
129 *   |<------- 31...8 ------->|< 7..0 >|
130 */
131typedef struct {
132  ULONG packed; /*! Packed huffman entry:
133                    - lower 8 bit are reservoed for length information
134                    - upper 24 bit contains huffman value */
135} HUFF_ENTRY;
136
137typedef struct {
138  HUFF_ENTRY entry[2][2];
139  HUFF_ENTRY escape;
140
141} LAV1_2D;
142
143typedef struct {
144  HUFF_ENTRY entry[4][4];
145  HUFF_ENTRY escape;
146
147} LAV3_2D;
148
149typedef struct {
150  HUFF_ENTRY entry[6][6];
151  HUFF_ENTRY escape;
152
153} LAV5_2D;
154
155typedef struct {
156  HUFF_ENTRY entry[7][7];
157  HUFF_ENTRY escape;
158
159} LAV6_2D;
160
161typedef struct {
162  HUFF_ENTRY entry[8][8];
163  HUFF_ENTRY escape;
164
165} LAV7_2D;
166
167typedef struct {
168  HUFF_ENTRY entry[10][10];
169  HUFF_ENTRY escape;
170
171} LAV9_2D;
172
173typedef struct {
174  HUFF_ENTRY entry[13][13];
175  HUFF_ENTRY escape;
176
177} LAV12_2D;
178
179typedef struct {
180  LAV3_2D lav3;
181  LAV5_2D lav5;
182  LAV7_2D lav7;
183  LAV9_2D lav9;
184
185} HUFF_CLD_TAB_2D;
186
187typedef struct {
188  LAV1_2D lav1;
189  LAV3_2D lav3;
190  LAV5_2D lav5;
191  LAV7_2D lav7;
192
193} HUFF_ICC_TAB_2D;
194
195typedef struct {
196  HUFF_ENTRY h1D[2][31];
197  HUFF_CLD_TAB_2D h2D[2][2];
198
199} HUFF_CLD_TABLE;
200
201typedef struct {
202  HUFF_ENTRY h1D[2][8];
203  HUFF_ICC_TAB_2D h2D[2][2];
204
205} HUFF_ICC_TABLE;
206
207typedef struct {
208  HUFF_ENTRY cld[31];
209  HUFF_ENTRY icc[8];
210
211} HUFF_PT0_TABLE;
212
213typedef HUFF_ENTRY HUFF_RES_TABLE[5][8];
214
215/* Constants *****************************************************************/
216extern const HUFF_CLD_TABLE fdk_sacenc_huffCLDTab;
217extern const HUFF_ICC_TABLE fdk_sacenc_huffICCTab;
218extern const HUFF_PT0_TABLE fdk_sacenc_huffPart0Tab;
219
220/* Function / Class Declarations *********************************************/
221
222#endif /* SACENC_HUFF_TAB_H */
223