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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):   M. Lohwasser
87    Description: common bitbuffer read/write routines
88 
89 ******************************************************************************/
90 
91 #ifndef __FDK_BITBUFFER_H__
92 #define __FDK_BITBUFFER_H__
93 
94 
95 
96 #include "machine_type.h"
97 
98 typedef struct
99 {
100   UINT ValidBits;
101   UINT ReadOffset;
102   UINT WriteOffset;
103   UINT BitCnt;
104   UINT BitNdx;
105 
106   UCHAR *Buffer;
107   UINT   bufSize;
108   UINT   bufBits;
109 } FDK_BITBUF;
110 
111 typedef FDK_BITBUF *HANDLE_FDK_BITBUF;
112 
113 #ifdef __cplusplus
114 extern "C"
115 {
116 #endif
117 
118 extern const UINT BitMask [32+1];
119 
120 /**  The BitBuffer Functions are called straight from FDK_bitstream Interface.
121      For Functions functional survey look there.
122 */
123 
124 void FDK_CreateBitBuffer (HANDLE_FDK_BITBUF *hBitBuffer, UCHAR *pBuffer, UINT bufSize) ;
125 
126 void FDK_InitBitBuffer   (HANDLE_FDK_BITBUF hBitBuffer, UCHAR *pBuffer,
127                           UINT bufSize, UINT validBits) ;
128 
129 void FDK_ResetBitBuffer  (HANDLE_FDK_BITBUF hBitBuffer) ;
130 
131 void FDK_DeleteBitBuffer (HANDLE_FDK_BITBUF hBitBuffer) ;
132 
133 INT  FDK_get             (HANDLE_FDK_BITBUF hBitBuffer, const UINT numberOfBits) ;
134 
135 INT  FDK_get32           (HANDLE_FDK_BITBUF hBitBuffer) ;
136 
137 void FDK_put             (HANDLE_FDK_BITBUF hBitBuffer, UINT value, const UINT numberOfBits) ;
138 
139 INT  FDK_getBwd          (HANDLE_FDK_BITBUF hBitBuffer, const UINT numberOfBits);
140 void FDK_putBwd          (HANDLE_FDK_BITBUF hBitBuffer, UINT value, const UINT numberOfBits) ;
141 
142 void FDK_pushBack        (HANDLE_FDK_BITBUF hBitBuffer, const UINT numberOfBits, UCHAR config) ;
143 void FDK_pushForward     (HANDLE_FDK_BITBUF hBitBuffer, const UINT numberOfBits, UCHAR config) ;
144 
145 void FDK_byteAlign       (HANDLE_FDK_BITBUF hBitBuffer, UCHAR config) ;
146 
147 UINT FDK_getValidBits    (HANDLE_FDK_BITBUF hBitBuffer) ;
148 INT  FDK_getFreeBits     (HANDLE_FDK_BITBUF hBitBuffer) ;
149 
150 void FDK_setBitCnt       (HANDLE_FDK_BITBUF hBitBuffer, const UINT value) ;
151 INT  FDK_getBitCnt       (HANDLE_FDK_BITBUF hBitBuffer) ;
152 
153 void FDK_Feed            (HANDLE_FDK_BITBUF hBitBuffer, UCHAR inputBuffer [],
154                           const UINT bufferSize, UINT *bytesValid) ;
155 
156 void FDK_Copy            (HANDLE_FDK_BITBUF hBitBufDst, HANDLE_FDK_BITBUF hBitBufSrc, UINT *bytesValid) ;
157 
158 void FDK_Fetch           (HANDLE_FDK_BITBUF hBitBuffer, UCHAR outBuf[], UINT *writeBytes);
159 
160 
161 #ifdef __cplusplus
162 }
163 #endif
164 
165 
166 #endif
167