| |
| /* ----------------------------------------------------------------------------------------------------------- |
| Software License for The Fraunhofer FDK AAC Codec Library for Android |
| |
| © Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. |
| All rights reserved. |
| |
| 1. INTRODUCTION |
| The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements |
| the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. |
| This FDK AAC Codec software is intended to be used on a wide variety of Android devices. |
| |
| AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual |
| audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by |
| independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part |
| of the MPEG specifications. |
| |
| Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) |
| may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners |
| individually for the purpose of encoding or decoding bit streams in products that are compliant with |
| the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license |
| these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec |
| software may already be covered under those patent licenses when it is used for those licensed purposes only. |
| |
| Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, |
| are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional |
| applications information and documentation. |
| |
| 2. COPYRIGHT LICENSE |
| |
| Redistribution and use in source and binary forms, with or without modification, are permitted without |
| payment of copyright license fees provided that you satisfy the following conditions: |
| |
| You must retain the complete text of this software license in redistributions of the FDK AAC Codec or |
| your modifications thereto in source code form. |
| |
| You must retain the complete text of this software license in the documentation and/or other materials |
| provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. |
| You must make available free of charge copies of the complete source code of the FDK AAC Codec and your |
| modifications thereto to recipients of copies in binary form. |
| |
| The name of Fraunhofer may not be used to endorse or promote products derived from this library without |
| prior written permission. |
| |
| You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec |
| software or your modifications thereto. |
| |
| Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software |
| and the date of any change. For modified versions of the FDK AAC Codec, the term |
| "Fraunhofer FDK AAC Codec Library for Android" must be replaced by the term |
| "Third-Party Modified Version of the Fraunhofer FDK AAC Codec Library for Android." |
| |
| 3. NO PATENT LICENSE |
| |
| NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, |
| ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with |
| respect to this software. |
| |
| You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized |
| by appropriate patent licenses. |
| |
| 4. DISCLAIMER |
| |
| This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright holders and contributors |
| "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, including but not limited to the implied warranties |
| of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR |
| CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, |
| including but not limited to procurement of substitute goods or services; loss of use, data, or profits, |
| or business interruption, however caused and on any theory of liability, whether in contract, strict |
| liability, or tort (including negligence), arising in any way out of the use of this software, even if |
| advised of the possibility of such damage. |
| |
| 5. CONTACT INFORMATION |
| |
| Fraunhofer Institute for Integrated Circuits IIS |
| Attention: Audio and Multimedia Departments - FDK AAC LL |
| Am Wolfsmantel 33 |
| 91058 Erlangen, Germany |
| |
| www.iis.fraunhofer.de/amm |
| amm-info@iis.fraunhofer.de |
| ----------------------------------------------------------------------------------------------------------- */ |
| |
| /***************************** MPEG-4 AAC Decoder ************************** |
| |
| Author(s): Manuel Jander |
| Description: Bitstream data provider for MP4 decoders |
| |
| ******************************************************************************/ |
| |
| #include "machine_type.h" |
| #include "FDK_audio.h" |
| |
| #define MPFREAD_MP4FF_DISABLE |
| |
| #ifndef MPFREAD_MP4FF_DISABLE |
| /*!< If MPFREAD_MP4FF_ENABLE is set, include support for MPEG ISO fileformat. |
| If not set, no .mp4, .m4a and .3gp files can be used for input. */ |
| #define MPFREAD_MP4FF_ENABLE |
| #endif |
| |
| /* maximum number of layers which can be read */ |
| /* shall equal max number of layers read by iisisoff */ |
| #define FILEREAD_MAX_LAYERS (2) |
| |
| typedef struct STRUCT_FILEREAD *HANDLE_FILEREAD; |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /** |
| * \brief Open an MPEG audio file and try to detect its format. |
| * \param filename String of the filename to be opened. |
| * \param fileFormat Skip file format detection and use given format if fileFormat != FF_UNKNOWN. |
| Else store detected format into *fileFmt. |
| * \param transportType Skip transport type detection and use given format if transportType != TT_UNKNOWN. |
| Else store detected format into *fileFmt. |
| * \param conf Pointer to unsigned char to hold the AudioSpecificConfig of the input file, if |
| any (MPEG 4 file format). In case of RAW LATM it holds the StreamMuxConfig. |
| * \param confSize Pointer to an integer, where the length of the ASC or SMC (in case of RAW LATM) |
| is stored to. |
| * \return MPEG file read handle. |
| */ |
| HANDLE_FILEREAD mpegFileRead_Open( const char *filename, |
| FILE_FORMAT fileFormat, |
| TRANSPORT_TYPE transportType, |
| UCHAR *conf[], |
| UINT confSize[], |
| INT *noOfLayers |
| ); |
| |
| /** |
| * \brief Get the file format of the input file. |
| * \param hDataSrc MPEG file read handle. |
| * \return File format of the input file. |
| */ |
| FILE_FORMAT mpegFileRead_GetFileFormat(HANDLE_FILEREAD hDataSrc); |
| |
| /** |
| * \brief Get the transport type of the input file. |
| * \param hDataSrc MPEG file read handle. |
| * \return Transport type of the input file. |
| */ |
| TRANSPORT_TYPE mpegFileRead_GetTransportType(HANDLE_FILEREAD hDataSrc); |
| |
| /** |
| * \brief Read data from MPEG file. In case of packet file, read one packet, in case |
| * of streaming file with embedded synchronisation layer (LOAS/ADTS...), just |
| * fill the buffer. |
| * |
| * \param hMpegFile MPEG file read handle. |
| * \param inBuffer Pointer to input buffer. |
| * \param bufferSize Size of input buffer. |
| * \param bytesValid Number of bytes that were read. |
| * \return 0 on success, -1 if unsupported file format or file read error. |
| */ |
| int mpegFileRead_Read( HANDLE_FILEREAD hMpegFile, |
| UCHAR *inBuffer[], |
| UINT bufferSize, |
| UINT *bytesValid |
| ); |
| |
| /** |
| * \brief Seek in file from origin by given offset in frames. |
| * \param hMpegFile MPEG file read handle. |
| * \param origin If 0, the origin is the file beginning (absolute seek). |
| * If 1, the origin is the current position (relative seek). |
| * \param offset The amount of frames to seek from the given origin. |
| * \return 0 on sucess, -1 if offset < 0 or file read error. |
| */ |
| int mpegFileRead_seek( HANDLE_FILEREAD hMpegFile, |
| INT origin, |
| INT offset |
| ); |
| |
| /** |
| * \brief Get file position in percent. |
| * \param hMpegFile MPEG file read handle. |
| * \return File position in percent. |
| */ |
| int mpegFileRead_getPercent(HANDLE_FILEREAD hMpegFile); |
| |
| |
| /** |
| * \brief Close MPEG audio file. |
| * \param hMpegFile Mpeg file read handle. |
| * \return 0 on sucess. |
| */ |
| int mpegFileRead_Close(HANDLE_FILEREAD *hMpegFile); |
| |
| #ifdef __cplusplus |
| } |
| #endif |