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/*****************************  MPEG-4 AAC Decoder  **************************
85
86   Author(s):   Daniel Homm
87   Description:
88
89******************************************************************************/
90
91#ifndef LATM_DEMUX_H
92#define LATM_DEMUX_H
93
94#include "tpdec_lib.h"
95
96
97#include "FDK_bitstream.h"
98
99#define MIN_LATM_HEADERLENGTH  9
100#define MIN_LOAS_HEADERLENGTH  MIN_LATM_HEADERLENGTH + 24   /* both in bits */
101 #define MIN_TP_BUF_SIZE_LOAS   ( 8194 )
102
103enum {
104  LATM_MAX_PROG = 1,
105  LATM_MAX_LAYER = 2,
106  LATM_MAX_VAR_CHUNKS=16,
107  LATM_MAX_ID=16
108};
109
110typedef struct {
111  UINT m_frameLengthType;
112  UINT m_bufferFullness;
113  UINT m_streamID;
114  UINT m_frameLengthInBits;
115} LATM_LAYER_INFO;
116
117typedef struct {
118  LATM_LAYER_INFO m_linfo[LATM_MAX_PROG][LATM_MAX_LAYER];
119  UINT m_taraBufferFullness;
120  UINT m_otherDataLength;
121  UINT m_audioMuxLengthBytes;          /* Length of LOAS payload */
122
123  UCHAR m_useSameStreamMux;
124  UCHAR m_AudioMuxVersion;
125  UCHAR m_AudioMuxVersionA;
126  UCHAR m_allStreamsSameTimeFraming;
127  UCHAR m_noSubFrames;
128  UCHAR m_numProgram;
129  UCHAR m_numLayer;
130  UCHAR m_useSameConfig;
131
132  UCHAR m_otherDataPresent;
133  UCHAR m_crcCheckPresent;
134  UCHAR m_crcCheckSum;
135
136  SCHAR BufferFullnessAchieved;
137} CLatmDemux;
138
139int CLatmDemux_ReadAuChunkLengthInfo(HANDLE_FDK_BITSTREAM bs);
140
141TRANSPORTDEC_ERROR CLatmDemux_Read(
142        HANDLE_FDK_BITSTREAM bs,
143        CLatmDemux *pLatmDemux,
144        TRANSPORT_TYPE tt,
145        CSTpCallBacks *pTpDecCallbacks,
146        CSAudioSpecificConfig *pAsc,
147        int *pfConfigFound,
148        const INT ignoreBufferFullness
149        );
150
151/**
152 * \brief Read StreamMuxConfig
153 * \param bs bit stream handle as data source
154 * \param pLatmDemux pointer to CLatmDemux struct of current LATM context
155 * \param pTpDecCallbacks Call back structure for configuration callbacks
156 * \param pAsc pointer to a ASC for configuration storage
157 * \param pfConfigFound pointer to a flag which is set to 1 if a configuration was found and processed successfully
158 * \return error code
159 */
160TRANSPORTDEC_ERROR CLatmDemux_ReadStreamMuxConfig(
161        HANDLE_FDK_BITSTREAM bs,
162        CLatmDemux *pLatmDemux,
163        CSTpCallBacks *pTpDecCallbacks,
164        CSAudioSpecificConfig *pAsc,
165        int * pfConfigFound
166        );
167
168TRANSPORTDEC_ERROR CLatmDemux_ReadPayloadLengthInfo(HANDLE_FDK_BITSTREAM bs, CLatmDemux *pLatmDemux);
169
170int  CLatmDemux_GetFrameLengthInBits(CLatmDemux *pLatmDemux);
171int  CLatmDemux_GetOtherDataPresentFlag(CLatmDemux *pLatmDemux);
172int  CLatmDemux_GetOtherDataLength(CLatmDemux *pLatmDemux);
173UINT CLatmDemux_GetNrOfSubFrames(CLatmDemux *pLatmDemux);
174
175
176#endif /* LATM_DEMUX_H */
177