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 Audio Encoder *************************** 85 86 Initial author: M. Neuendorf, N. Rettelbach, M. Multrus 87 contents/description: PS Parameter extraction, encoding 88 89 ******************************************************************************/ 90 /*! 91 \file 92 \brief PS parameter extraction, encoding functions 93 */ 94 95 #ifndef __INCLUDED_PS_ENCODE_H 96 #define __INCLUDED_PS_ENCODE_H 97 98 #include "ps_const.h" 99 #include "ps_bitenc.h" 100 101 102 #define IID_SCALE_FT (64.f) /* maxVal in Quant tab is +/- 50 */ 103 #define IID_SCALE 6 /* maxVal in Quant tab is +/- 50 */ 104 #define IID_MAXVAL (1<<IID_SCALE) 105 106 #define PS_QUANT_SCALE_FT (64.f) /* error smaller (64-25)/64 * 20 bands * 4 env -> QuantScale 64 */ 107 #define PS_QUANT_SCALE 6 /* error smaller (64-25)/64 * 20 bands * 4 env -> QuantScale 6 bit */ 108 109 110 #define QMF_GROUPS_LO_RES 12 111 #define SUBQMF_GROUPS_LO_RES 10 112 #define QMF_GROUPS_HI_RES 18 113 #define SUBQMF_GROUPS_HI_RES 30 114 115 116 typedef struct T_PS_DATA { 117 118 INT iidEnable; 119 INT iidEnableLast; 120 INT iidQuantMode; 121 INT iidQuantModeLast; 122 INT iidDiffMode[PS_MAX_ENVELOPES]; 123 INT iidIdx [PS_MAX_ENVELOPES][PS_MAX_BANDS]; 124 INT iidIdxLast [PS_MAX_BANDS]; 125 126 INT iccEnable; 127 INT iccEnableLast; 128 INT iccQuantMode; 129 INT iccQuantModeLast; 130 INT iccDiffMode[PS_MAX_ENVELOPES]; 131 INT iccIdx [PS_MAX_ENVELOPES][PS_MAX_BANDS]; 132 INT iccIdxLast [PS_MAX_BANDS]; 133 134 INT nEnvelopesLast; 135 136 INT headerCnt; 137 INT iidTimeCnt; 138 INT iccTimeCnt; 139 INT noEnvCnt; 140 141 } PS_DATA, *HANDLE_PS_DATA; 142 143 144 typedef struct T_PS_ENCODE{ 145 146 PS_DATA psData; 147 148 PS_BANDS psEncMode; 149 INT nQmfIidGroups; 150 INT nSubQmfIidGroups; 151 INT iidGroupBorders[QMF_GROUPS_HI_RES + SUBQMF_GROUPS_HI_RES + 1]; 152 INT subband2parameterIndex[QMF_GROUPS_HI_RES + SUBQMF_GROUPS_HI_RES]; 153 UCHAR iidGroupWidthLd[QMF_GROUPS_HI_RES + SUBQMF_GROUPS_HI_RES]; 154 FIXP_DBL iidQuantErrorThreshold; 155 156 UCHAR psBandNrgScale [PS_MAX_BANDS]; 157 158 } PS_ENCODE; 159 160 161 typedef struct T_PS_ENCODE *HANDLE_PS_ENCODE; 162 163 FDK_PSENC_ERROR FDKsbrEnc_CreatePSEncode( 164 HANDLE_PS_ENCODE *phPsEncode 165 ); 166 167 FDK_PSENC_ERROR FDKsbrEnc_InitPSEncode( 168 HANDLE_PS_ENCODE hPsEncode, 169 const PS_BANDS psEncMode, 170 const FIXP_DBL iidQuantErrorThreshold 171 ); 172 173 FDK_PSENC_ERROR FDKsbrEnc_DestroyPSEncode( 174 HANDLE_PS_ENCODE *phPsEncode 175 ); 176 177 FDK_PSENC_ERROR FDKsbrEnc_PSEncode( 178 HANDLE_PS_ENCODE hPsEncode, 179 HANDLE_PS_OUT hPsOut, 180 UCHAR *dynBandScale, 181 UINT maxEnvelopes, 182 FIXP_DBL *hybridData[HYBRID_FRAMESIZE][MAX_PS_CHANNELS][2], 183 const INT frameSize, 184 const INT sendHeader 185 ); 186 187 #endif 188
