1 2 /* ----------------------------------------------------------------------------------------------------------- 3 Software License for The Fraunhofer FDK AAC Codec Library for Android 4 5 Copyright 1995 - 2012 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 Audio Encoder ************************** 85 86 Initial author: M. Werner 87 contents/description: Bitstream encoder 88 89 ******************************************************************************/ 90 91 #ifndef _BITENC_H 92 #define _BITENC_H 93 94 95 #include "qc_data.h" 96 #include "aacenc_tns.h" 97 #include "channel_map.h" 98 #include "interface.h" /* obsolete, when PSY_OUT is thrown out of the WritBS-call! */ 99 #include "FDK_audio.h" 100 #include "aacenc.h" 101 102 #include "tpenc_lib.h" 103 104 typedef enum{ 105 MAX_ENCODER_CHANNELS = 9, 106 MAX_BLOCK_TYPES = 4, 107 MAX_AAC_LAYERS = 9, 108 MAX_LAYERS = MAX_AAC_LAYERS , /* only one core layer if present */ 109 FIRST_LAY = 1 /* default layer number for AAC nonscalable */ 110 } _MAX_CONST; 111 112 #define BUFFER_MX_HUFFCB_SIZE (32*sizeof(INT)) /* our FDK_bitbuffer needs size of power 2 */ 113 114 #define EL_ID_BITS ( 3 ) 115 116 117 /** 118 * \brief Arbitrary order bitstream writer. This function can either assemble a bit stream 119 * and write into the bit buffer of hTpEnc or calculate the number of static bits (signal independent) 120 * TpEnc handle must be NULL in this case. Or also Calculate the minimum possible number of 121 * static bits which by disabling all tools e.g. MS, TNS and sbfCnt=0. The minCnt parameter 122 * has to be 1 in this latter case. 123 * \param hTpEnc Transport encoder handle. If NULL, the number of static bits will be returned into 124 * *pBitDemand. 125 * \param pElInfo 126 * \param qcOutChannel 127 * \param hReorderInfo 128 * \param psyOutElement 129 * \param psyOutChannel 130 * \param syntaxFlags Bit stream syntax flags as defined in FDK_audio.h (Audio Codec flags). 131 * \param aot 132 * \param epConfig 133 * \param pBitDemand Pointer to an int where the amount of bits is returned into. The returned value 134 * depends on if hTpEnc is NULL and minCnt. 135 * \param minCnt If non-zero the value returned into *pBitDemand is the absolute minimum required amount of 136 * static bits in order to write a valid bit stream. 137 * \return AAC_ENCODER_ERROR error code 138 */ 139 AAC_ENCODER_ERROR FDKaacEnc_ChannelElementWrite( HANDLE_TRANSPORTENC hTpEnc, 140 ELEMENT_INFO *pElInfo, 141 QC_OUT_CHANNEL *qcOutChannel[(2)], 142 PSY_OUT_ELEMENT *psyOutElement, 143 PSY_OUT_CHANNEL *psyOutChannel[(2)], 144 UINT syntaxFlags, 145 AUDIO_OBJECT_TYPE aot, 146 SCHAR epConfig, 147 INT *pBitDemand, 148 UCHAR minCnt 149 ); 150 /** 151 * \brief Write bit stream or account static bits 152 * \param hTpEnc transport encoder handle. If NULL, the function will 153 * not write any bit stream data but only count the amount 154 * of static (signal independent) bits 155 * \param channelMapping Channel mapping info 156 * \param qcOut 157 * \param psyOut 158 * \param qcKernel 159 * \param hBSE 160 * \param aot Audio Object Type being encoded 161 * \param syntaxFlags Flags indicating format specific detail 162 * \param epConfig Error protection config 163 */ 164 AAC_ENCODER_ERROR FDKaacEnc_WriteBitstream (HANDLE_TRANSPORTENC hTpEnc, 165 CHANNEL_MAPPING *channelMapping, 166 QC_OUT* qcOut, 167 PSY_OUT* psyOut, 168 QC_STATE* qcKernel, 169 AUDIO_OBJECT_TYPE aot, 170 UINT syntaxFlags, 171 SCHAR epConfig 172 ); 173 174 INT FDKaacEnc_writeExtensionData( HANDLE_TRANSPORTENC hTpEnc, 175 QC_OUT_EXTENSION *pExtension, 176 INT elInstanceTag, 177 UINT alignAnchor, 178 UINT syntaxFlags, 179 AUDIO_OBJECT_TYPE aot, 180 SCHAR epConfig 181 ); 182 183 #endif /* _BITENC_H */ 184
