/* ----------------------------------------------------------------------------- Software License for The Fraunhofer FDK AAC Codec Library for Android © Copyright 1995 - 2021 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 decoder library ********************* Author(s): Daniel Homm Description: *******************************************************************************/ #ifndef TPDEC_LATM_H #define TPDEC_LATM_H #include "tpdec_lib.h" #include "FDK_bitstream.h" #define MIN_LATM_HEADERLENGTH 9 #define MIN_LOAS_HEADERLENGTH MIN_LATM_HEADERLENGTH + 24 /* both in bits */ #define MIN_TP_BUF_SIZE_LOAS (8194) enum { LATM_MAX_PROG = 1, LATM_MAX_LAYER = 1, LATM_MAX_VAR_CHUNKS = 16, LATM_MAX_ID = 16 }; typedef struct { UINT m_frameLengthType; UINT m_bufferFullness; UINT m_streamID; UINT m_frameLengthInBits; } LATM_LAYER_INFO; typedef struct { LATM_LAYER_INFO m_linfo[LATM_MAX_PROG][LATM_MAX_LAYER]; UINT m_taraBufferFullness; UINT m_otherDataLength; UINT m_audioMuxLengthBytes; /* Length of LOAS payload */ UCHAR m_useSameStreamMux; UCHAR m_AudioMuxVersion; UCHAR m_AudioMuxVersionA; UCHAR m_allStreamsSameTimeFraming; UCHAR m_noSubFrames; UCHAR m_numProgram; UCHAR m_numLayer[LATM_MAX_PROG]; UCHAR m_otherDataPresent; UCHAR m_crcCheckPresent; SCHAR BufferFullnessAchieved; UCHAR usacExplicitCfgChanged; /* explicit config in case of USAC and LOAS/LATM must be compared to IPF cfg */ UCHAR applyAsc; /* apply ASC immediate without flushing */ UCHAR newCfgHasAudioPreRoll; /* the new (dummy parsed) config has an AudioPreRoll */ } CLatmDemux; TRANSPORTDEC_ERROR CLatmDemux_Read(HANDLE_FDK_BITSTREAM bs, CLatmDemux *pLatmDemux, TRANSPORT_TYPE tt, CSTpCallBacks *pTpDecCallbacks, CSAudioSpecificConfig *pAsc, int *pfConfigFound, const INT ignoreBufferFullness); /** * \brief Read StreamMuxConfig * \param bs bit stream handle as data source * \param pLatmDemux pointer to CLatmDemux struct of current LATM context * \param pTpDecCallbacks Call back structure for configuration callbacks * \param pAsc pointer to a ASC for configuration storage * \param pfConfigFound pointer to a flag which is set to 1 if a configuration * was found and processed successfully * \param configMode Config modes: memory allocation mode or config change * detection mode * \param configChanged Indicates a config change * \return error code */ TRANSPORTDEC_ERROR CLatmDemux_ReadStreamMuxConfig( HANDLE_FDK_BITSTREAM bs, CLatmDemux *pLatmDemux, CSTpCallBacks *pTpDecCallbacks, CSAudioSpecificConfig *pAsc, int *pfConfigFound, UCHAR configMode, UCHAR configChanged); TRANSPORTDEC_ERROR CLatmDemux_ReadPayloadLengthInfo(HANDLE_FDK_BITSTREAM bs, CLatmDemux *pLatmDemux); UINT CLatmDemux_GetFrameLengthInBits(CLatmDemux *pLatmDemux, const UINT prog, const UINT layer); UINT CLatmDemux_GetOtherDataPresentFlag(CLatmDemux *pLatmDemux); UINT CLatmDemux_GetOtherDataLength(CLatmDemux *pLatmDemux); UINT CLatmDemux_GetNrOfSubFrames(CLatmDemux *pLatmDemux); UINT CLatmDemux_GetNrOfLayers(CLatmDemux *pLatmDemux, const UINT program); #endif /* TPDEC_LATM_H */