1
2/* -----------------------------------------------------------------------------------------------------------
3Software 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
9The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements
10the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio.
11This FDK AAC Codec software is intended to be used on a wide variety of Android devices.
12
13AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual
14audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by
15independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part
16of the MPEG specifications.
17
18Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer)
19may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners
20individually for the purpose of encoding or decoding bit streams in products that are compliant with
21the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license
22these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec
23software may already be covered under those patent licenses when it is used for those licensed purposes only.
24
25Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality,
26are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional
27applications information and documentation.
28
292.    COPYRIGHT LICENSE
30
31Redistribution and use in source and binary forms, with or without modification, are permitted without
32payment of copyright license fees provided that you satisfy the following conditions:
33
34You must retain the complete text of this software license in redistributions of the FDK AAC Codec or
35your modifications thereto in source code form.
36
37You must retain the complete text of this software license in the documentation and/or other materials
38provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form.
39You must make available free of charge copies of the complete source code of the FDK AAC Codec and your
40modifications thereto to recipients of copies in binary form.
41
42The name of Fraunhofer may not be used to endorse or promote products derived from this library without
43prior written permission.
44
45You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec
46software or your modifications thereto.
47
48Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software
49and 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
533.    NO PATENT LICENSE
54
55NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer,
56ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with
57respect to this software.
58
59You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized
60by appropriate patent licenses.
61
624.    DISCLAIMER
63
64This 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
66of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
67CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages,
68including but not limited to procurement of substitute goods or services; loss of use, data, or profits,
69or business interruption, however caused and on any theory of liability, whether in contract, strict
70liability, or tort (including negligence), arising in any way out of the use of this software, even if
71advised of the possibility of such damage.
72
735.    CONTACT INFORMATION
74
75Fraunhofer Institute for Integrated Circuits IIS
76Attention: Audio and Multimedia Departments - FDK AAC LL
77Am Wolfsmantel 33
7891058 Erlangen, Germany
79
80www.iis.fraunhofer.de/amm
81amm-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
98typedef 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
111typedef FDK_BITBUF *HANDLE_FDK_BITBUF;
112
113#ifdef __cplusplus
114extern "C"
115{
116#endif
117
118extern 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
124void FDK_CreateBitBuffer (HANDLE_FDK_BITBUF *hBitBuffer, UCHAR *pBuffer, UINT bufSize) ;
125
126void FDK_InitBitBuffer   (HANDLE_FDK_BITBUF hBitBuffer, UCHAR *pBuffer,
127                          UINT bufSize, UINT validBits) ;
128
129void FDK_ResetBitBuffer  (HANDLE_FDK_BITBUF hBitBuffer) ;
130
131void FDK_DeleteBitBuffer (HANDLE_FDK_BITBUF hBitBuffer) ;
132
133INT  FDK_get             (HANDLE_FDK_BITBUF hBitBuffer, const UINT numberOfBits) ;
134
135INT  FDK_get32           (HANDLE_FDK_BITBUF hBitBuffer) ;
136
137void FDK_put             (HANDLE_FDK_BITBUF hBitBuffer, UINT value, const UINT numberOfBits) ;
138
139INT  FDK_getBwd          (HANDLE_FDK_BITBUF hBitBuffer, const UINT numberOfBits);
140void FDK_putBwd          (HANDLE_FDK_BITBUF hBitBuffer, UINT value, const UINT numberOfBits) ;
141
142void FDK_pushBack        (HANDLE_FDK_BITBUF hBitBuffer, const UINT numberOfBits, UCHAR config) ;
143void FDK_pushForward     (HANDLE_FDK_BITBUF hBitBuffer, const UINT numberOfBits, UCHAR config) ;
144
145void FDK_byteAlign       (HANDLE_FDK_BITBUF hBitBuffer, UCHAR config) ;
146
147UINT FDK_getValidBits    (HANDLE_FDK_BITBUF hBitBuffer) ;
148INT  FDK_getFreeBits     (HANDLE_FDK_BITBUF hBitBuffer) ;
149
150void FDK_setBitCnt       (HANDLE_FDK_BITBUF hBitBuffer, const UINT value) ;
151INT  FDK_getBitCnt       (HANDLE_FDK_BITBUF hBitBuffer) ;
152
153void FDK_Feed            (HANDLE_FDK_BITBUF hBitBuffer, UCHAR inputBuffer [],
154                          const UINT bufferSize, UINT *bytesValid) ;
155
156void FDK_Copy            (HANDLE_FDK_BITBUF hBitBufDst, HANDLE_FDK_BITBUF hBitBufSrc, UINT *bytesValid) ;
157
158void FDK_Fetch           (HANDLE_FDK_BITBUF hBitBuffer, UCHAR outBuf[], UINT *writeBytes);
159
160
161#ifdef __cplusplus
162}
163#endif
164
165
166#endif
167