1 2 /* ----------------------------------------------------------------------------------------------------------- 3 Software License for The Fraunhofer FDK AAC Codec Library for Android 4 5 Copyright 1995 - 2012 Fraunhofer-Gesellschaft zur Frderung 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 (at) 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
