| /* ----------------------------------------------------------------------------- |
| 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 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; |
| |
| int CLatmDemux_ReadAuChunkLengthInfo(HANDLE_FDK_BITSTREAM bs); |
| |
| 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 */ |