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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 /*****************************  MPEG-4 AAC Decoder  **************************
85 
86    Author(s):   Manuel Jander
87    Description: Bitstream data provider for MP4 decoders
88 
89 ******************************************************************************/
90 
91 #include "machine_type.h"
92 #include "FDK_audio.h"
93 
94 #define MPFREAD_MP4FF_DISABLE
95 
96 #ifndef MPFREAD_MP4FF_DISABLE
97   /*!< If MPFREAD_MP4FF_ENABLE is set, include support for MPEG ISO fileformat.
98        If not set, no .mp4, .m4a and .3gp files can be used for input. */
99   #define MPFREAD_MP4FF_ENABLE
100 #endif
101 
102 /* maximum number of layers which can be read        */
103 /* shall equal max number of layers read by iisisoff */
104 #define FILEREAD_MAX_LAYERS (2)
105 
106 typedef struct STRUCT_FILEREAD *HANDLE_FILEREAD;
107 
108 #ifdef __cplusplus
109 extern "C" {
110 #endif
111 
112 /**
113  * \brief           Open an MPEG audio file and try to detect its format.
114  * \param filename  String of the filename to be opened.
115  * \param fileFormat Skip file format detection and use given format if fileFormat != FF_UNKNOWN.
116                     Else store detected format into *fileFmt.
117  * \param transportType Skip transport type detection and use given format if transportType != TT_UNKNOWN.
118                     Else store detected format into *fileFmt.
119  * \param conf      Pointer to unsigned char to hold the AudioSpecificConfig of the input file, if
120                     any (MPEG 4 file format). In case of RAW LATM it holds the StreamMuxConfig.
121  * \param confSize  Pointer to an integer, where the length of the ASC or SMC (in case of RAW LATM)
122                     is stored to.
123  * \return          MPEG file read handle.
124  */
125 HANDLE_FILEREAD mpegFileRead_Open( const char     *filename,
126                                    FILE_FORMAT     fileFormat,
127                                    TRANSPORT_TYPE  transportType,
128                                    UCHAR          *conf[],
129                                    UINT            confSize[],
130                                    INT            *noOfLayers
131                                  );
132 
133 /**
134  * \brief           Get the file format of the input file.
135  * \param hDataSrc  MPEG file read handle.
136  * \return          File format of the input file.
137  */
138 FILE_FORMAT mpegFileRead_GetFileFormat(HANDLE_FILEREAD hDataSrc);
139 
140 /**
141  * \brief           Get the transport type of the input file.
142  * \param hDataSrc  MPEG file read handle.
143  * \return          Transport type of the input file.
144  */
145 TRANSPORT_TYPE mpegFileRead_GetTransportType(HANDLE_FILEREAD hDataSrc);
146 
147 /**
148  * \brief Read data from MPEG file. In case of packet file, read one packet, in case
149  *        of streaming file with embedded synchronisation layer (LOAS/ADTS...), just
150  *        fill the buffer.
151  *
152  * \param hMpegFile   MPEG file read handle.
153  * \param inBuffer    Pointer to input buffer.
154  * \param bufferSize  Size of input buffer.
155  * \param bytesValid  Number of bytes that were read.
156  * \return            0 on success, -1 if unsupported file format or file read error.
157  */
158 int mpegFileRead_Read( HANDLE_FILEREAD   hMpegFile,
159                        UCHAR            *inBuffer[],
160                        UINT              bufferSize,
161                        UINT             *bytesValid
162                      );
163 
164 /**
165  * \brief            Seek in file from origin by given offset in frames.
166  * \param hMpegFile  MPEG file read handle.
167  * \param origin     If 0, the origin is the file beginning (absolute seek).
168  *                   If 1, the origin is the current position (relative seek).
169  * \param offset     The amount of frames to seek from the given origin.
170  * \return           0 on sucess, -1 if offset < 0 or file read error.
171  */
172 int mpegFileRead_seek( HANDLE_FILEREAD   hMpegFile,
173                        INT               origin,
174                        INT               offset
175                       );
176 
177 /**
178  * \brief            Get file position in percent.
179  * \param hMpegFile  MPEG file read handle.
180  * \return           File position in percent.
181  */
182 int mpegFileRead_getPercent(HANDLE_FILEREAD hMpegFile);
183 
184 
185 /**
186  * \brief           Close MPEG audio file.
187  * \param hMpegFile Mpeg file read handle.
188  * \return          0 on sucess.
189  */
190 int mpegFileRead_Close(HANDLE_FILEREAD *hMpegFile);
191 
192 #ifdef __cplusplus
193 }
194 #endif
195