1 2 /* ----------------------------------------------------------------------------------------------------------- 3 Software License for The Fraunhofer FDK AAC Codec Library for Android 4 5 Copyright 1995 - 2013 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): Daniel Homm 87 Description: 88 89 ******************************************************************************/ 90 91 #ifndef LATM_DEMUX_H 92 #define LATM_DEMUX_H 93 94 #include "tpdec_lib.h" 95 96 97 #include "FDK_bitstream.h" 98 99 #define MIN_LATM_HEADERLENGTH 9 100 #define MIN_LOAS_HEADERLENGTH MIN_LATM_HEADERLENGTH + 24 /* both in bits */ 101 #define MIN_TP_BUF_SIZE_LOAS ( 8194 ) 102 103 enum { 104 LATM_MAX_PROG = 1, 105 LATM_MAX_LAYER = 2, 106 LATM_MAX_VAR_CHUNKS=16, 107 LATM_MAX_ID=16 108 }; 109 110 typedef struct { 111 UINT m_frameLengthType; 112 UINT m_bufferFullness; 113 UINT m_streamID; 114 UINT m_frameLengthInBits; 115 } LATM_LAYER_INFO; 116 117 typedef struct { 118 LATM_LAYER_INFO m_linfo[LATM_MAX_PROG][LATM_MAX_LAYER]; 119 UINT m_taraBufferFullness; 120 UINT m_otherDataLength; 121 UINT m_audioMuxLengthBytes; /* Length of LOAS payload */ 122 123 UCHAR m_useSameStreamMux; 124 UCHAR m_AudioMuxVersion; 125 UCHAR m_AudioMuxVersionA; 126 UCHAR m_allStreamsSameTimeFraming; 127 UCHAR m_noSubFrames; 128 UCHAR m_numProgram; 129 UCHAR m_numLayer; 130 UCHAR m_useSameConfig; 131 132 UCHAR m_otherDataPresent; 133 UCHAR m_crcCheckPresent; 134 UCHAR m_crcCheckSum; 135 136 SCHAR BufferFullnessAchieved; 137 } CLatmDemux; 138 139 int CLatmDemux_ReadAuChunkLengthInfo(HANDLE_FDK_BITSTREAM bs); 140 141 TRANSPORTDEC_ERROR CLatmDemux_Read( 142 HANDLE_FDK_BITSTREAM bs, 143 CLatmDemux *pLatmDemux, 144 TRANSPORT_TYPE tt, 145 CSTpCallBacks *pTpDecCallbacks, 146 CSAudioSpecificConfig *pAsc, 147 int *pfConfigFound, 148 const INT ignoreBufferFullness 149 ); 150 151 /** 152 * \brief Read StreamMuxConfig 153 * \param bs bit stream handle as data source 154 * \param pLatmDemux pointer to CLatmDemux struct of current LATM context 155 * \param pTpDecCallbacks Call back structure for configuration callbacks 156 * \param pAsc pointer to a ASC for configuration storage 157 * \param pfConfigFound pointer to a flag which is set to 1 if a configuration was found and processed successfully 158 * \return error code 159 */ 160 TRANSPORTDEC_ERROR CLatmDemux_ReadStreamMuxConfig( 161 HANDLE_FDK_BITSTREAM bs, 162 CLatmDemux *pLatmDemux, 163 CSTpCallBacks *pTpDecCallbacks, 164 CSAudioSpecificConfig *pAsc, 165 int * pfConfigFound 166 ); 167 168 TRANSPORTDEC_ERROR CLatmDemux_ReadPayloadLengthInfo(HANDLE_FDK_BITSTREAM bs, CLatmDemux *pLatmDemux); 169 170 int CLatmDemux_GetFrameLengthInBits(CLatmDemux *pLatmDemux); 171 int CLatmDemux_GetOtherDataPresentFlag(CLatmDemux *pLatmDemux); 172 int CLatmDemux_GetOtherDataLength(CLatmDemux *pLatmDemux); 173 UINT CLatmDemux_GetNrOfSubFrames(CLatmDemux *pLatmDemux); 174 175 176 #endif /* LATM_DEMUX_H */ 177
