| /* ----------------------------------------------------------------------------- |
| Software License for The Fraunhofer FDK AAC Codec Library for Android |
| |
| © Copyright 1995 - 2018 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 transport format encoder library ********************* |
| |
| Author(s): Alex Groeschel |
| |
| Description: ADTS Transport writer |
| |
| *******************************************************************************/ |
| |
| #ifndef TPENC_ADTS_H |
| #define TPENC_ADTS_H |
| |
| #include "tp_data.h" |
| |
| #include "FDK_crc.h" |
| |
| typedef struct { |
| INT sample_freq; |
| CHANNEL_MODE channel_mode; |
| UCHAR decoderCanDoMpeg4; |
| UCHAR mpeg_id; |
| UCHAR layer; |
| UCHAR protection_absent; |
| UCHAR profile; |
| UCHAR sample_freq_index; |
| UCHAR private_bit; |
| UCHAR original; |
| UCHAR home; |
| UCHAR copyright_id; |
| UCHAR copyright_start; |
| USHORT frame_length; |
| UCHAR num_raw_blocks; |
| UCHAR BufferFullnesStartFlag; |
| UCHAR channel_config_zero; |
| int headerBits; /*!< Header bit demand for the current raw data block */ |
| int currentBlock; /*!< Index of current raw data block */ |
| int subFrameStartBit; /*!< Bit position where the current raw data block |
| begins */ |
| FDK_CRCINFO crcInfo; |
| } STRUCT_ADTS; |
| |
| typedef STRUCT_ADTS *HANDLE_ADTS; |
| |
| /** |
| * \brief Initialize ADTS data structure |
| * |
| * \param hAdts ADTS data handle |
| * \param config a valid CODER_CONFIG struct from where the required |
| * information for the ADTS header is extrated from |
| * |
| * \return 0 in case of success. |
| */ |
| INT adtsWrite_Init(HANDLE_ADTS hAdts, CODER_CONFIG *config); |
| |
| /** |
| * \brief Get the total bit overhead caused by ADTS |
| * |
| * \hAdts handle to ADTS data |
| * |
| * \return Amount of additional bits required for the current raw data block |
| */ |
| int adtsWrite_GetHeaderBits(HANDLE_ADTS hAdts); |
| |
| /** |
| * \brief Write an ADTS header into the given bitstream. May not write a header |
| * in case of multiple raw data blocks. |
| * |
| * \param hAdts ADTS data handle |
| * \param hBitStream bitstream handle into which the ADTS may be written into |
| * \param buffer_fullness the buffer fullness value for the ADTS header |
| * \param the current raw data block length |
| * |
| * \return 0 in case of success. |
| */ |
| INT adtsWrite_EncodeHeader(HANDLE_ADTS hAdts, HANDLE_FDK_BITSTREAM hBitStream, |
| int bufferFullness, int frame_length); |
| /** |
| * \brief Finish a ADTS raw data block |
| * |
| * \param hAdts ADTS data handle |
| * \param hBs bitstream handle into which the ADTS may be written into |
| * \param pBits a pointer to a integer holding the current bitstream buffer bit |
| * count, which is corrected to the current raw data block boundary. |
| * |
| */ |
| void adtsWrite_EndRawDataBlock(HANDLE_ADTS hAdts, HANDLE_FDK_BITSTREAM hBs, |
| int *bits); |
| |
| /** |
| * \brief Start CRC region with a maximum number of bits |
| * If mBits is positive zero padding will be used for CRC calculation, if |
| * there are less than mBits bits available. If mBits is negative no zero |
| * padding is done. If mBits is zero the memory for the buffer is |
| * allocated dynamically, the number of bits is not limited. |
| * |
| * \param pAdts ADTS data handle |
| * \param hBs bitstream handle of which the CRC region ends |
| * \param mBits limit of number of bits to be considered for the requested CRC |
| * region |
| * |
| * \return ID for the created region, -1 in case of an error |
| */ |
| int adtsWrite_CrcStartReg(HANDLE_ADTS pAdts, HANDLE_FDK_BITSTREAM hBs, |
| int mBits); |
| |
| /** |
| * \brief Ends CRC region identified by reg |
| * |
| * \param pAdts ADTS data handle |
| * \param hBs bitstream handle of which the CRC region ends |
| * \param reg a CRC region ID returned previously by adtsWrite_CrcStartReg() |
| */ |
| void adtsWrite_CrcEndReg(HANDLE_ADTS pAdts, HANDLE_FDK_BITSTREAM hBs, int reg); |
| |
| #endif /* TPENC_ADTS_H */ |