1 2/* ----------------------------------------------------------------------------------------------------------- 3Software License for The Fraunhofer FDK AAC Codec Library for Android 4 5� Copyright 1995 - 2013 Fraunhofer-Gesellschaft zur F�rderung der angewandten Forschung e.V. 6 All rights reserved. 7 8 1. INTRODUCTION 9The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements 10the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. 11This FDK AAC Codec software is intended to be used on a wide variety of Android devices. 12 13AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual 14audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by 15independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part 16of the MPEG specifications. 17 18Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) 19may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners 20individually for the purpose of encoding or decoding bit streams in products that are compliant with 21the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license 22these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec 23software may already be covered under those patent licenses when it is used for those licensed purposes only. 24 25Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, 26are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional 27applications information and documentation. 28 292. COPYRIGHT LICENSE 30 31Redistribution and use in source and binary forms, with or without modification, are permitted without 32payment of copyright license fees provided that you satisfy the following conditions: 33 34You must retain the complete text of this software license in redistributions of the FDK AAC Codec or 35your modifications thereto in source code form. 36 37You must retain the complete text of this software license in the documentation and/or other materials 38provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. 39You must make available free of charge copies of the complete source code of the FDK AAC Codec and your 40modifications thereto to recipients of copies in binary form. 41 42The name of Fraunhofer may not be used to endorse or promote products derived from this library without 43prior written permission. 44 45You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec 46software or your modifications thereto. 47 48Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software 49and 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." 52 533. NO PATENT LICENSE 54 55NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, 56ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with 57respect to this software. 58 59You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized 60by appropriate patent licenses. 61 624. DISCLAIMER 63 64This 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 66of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 67CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, 68including but not limited to procurement of substitute goods or services; loss of use, data, or profits, 69or business interruption, however caused and on any theory of liability, whether in contract, strict 70liability, or tort (including negligence), arising in any way out of the use of this software, even if 71advised of the possibility of such damage. 72 735. CONTACT INFORMATION 74 75Fraunhofer Institute for Integrated Circuits IIS 76Attention: Audio and Multimedia Departments - FDK AAC LL 77Am Wolfsmantel 33 7891058 Erlangen, Germany 79 80www.iis.fraunhofer.de/amm 81amm-info@iis.fraunhofer.de 82----------------------------------------------------------------------------------------------------------- */ 83 84/***************************** MPEG-4 AAC Decoder ************************** 85 86 Author(s): Christian Griebel 87 Description: Dynamic range control (DRC) global data types 88 89******************************************************************************/ 90 91#ifndef AACDEC_DRC_TYPES_H 92#define AACDEC_DRC_TYPES_H 93 94 95 96#include "common_fix.h" 97 98 #define MAX_DRC_THREADS ( 3 ) /* Heavy compression value is handled just like MPEG DRC data */ 99#define MAX_DRC_BANDS ( 16 ) /* 2^LEN_DRC_BAND_INCR (LEN_DRC_BAND_INCR = 4) */ 100 101/** 102 * \brief DRC module global data types 103 */ 104typedef enum 105{ 106 UNKNOWN_PAYLOAD = 0, 107 MPEG_DRC_EXT_DATA = 1, 108 DVB_DRC_ANC_DATA = 2 109 110} AACDEC_DRC_PAYLOAD_TYPE; 111 112typedef struct 113{ 114 UINT expiryCount; 115 UINT numBands; 116 USHORT bandTop[MAX_DRC_BANDS]; 117 SHORT drcInterpolationScheme; 118 UCHAR drcValue[MAX_DRC_BANDS]; 119 SCHAR drcDataType; 120 121} CDrcChannelData; 122 123typedef struct 124{ 125 UINT excludedChnsMask; 126 SCHAR progRefLevel; 127 SCHAR presMode; /* Presentation mode: 0 (not indicated), 1, 2, and 3 (reserved). */ 128 SCHAR pceInstanceTag; 129 130 CDrcChannelData channelData; 131 132} CDrcPayload; 133 134typedef struct 135{ 136 FIXP_DBL cut; /* The attenuation scale factor currently used. */ 137 FIXP_DBL usrCut; /* The latest attenuation scale factor set by user. */ 138 FIXP_DBL boost; /* The boost scale factor currently used. */ 139 FIXP_DBL usrBoost; /* The latest boost scale factor set by user. */ 140 141 UINT expiryFrame; 142 SCHAR targetRefLevel; 143 UCHAR bsDelayEnable; 144 UCHAR applyDigitalNorm; 145 UCHAR applyHeavyCompression; 146 147} CDrcParams; 148 149 150typedef struct 151{ 152 CDrcParams params; /* Module parameters that can be set by user (via SetParam API function) */ 153 154 UCHAR enable; /* Switch that controls dynamic range processing */ 155 UCHAR digitalNorm; /* Switch to en-/disable reference level normalization in digital domain */ 156 157 USHORT numPayloads; /* The number of DRC data payload elements found within frame */ 158 USHORT numThreads; /* The number of DRC data threads extracted from the found payload elements */ 159 SCHAR progRefLevel; /* Program reference level for all channels */ 160 UCHAR progRefLevelPresent; /* Program reference level found in bitstream */ 161 162 UINT prlExpiryCount; /* Counter that can be used to monitor the life time of the program reference level. */ 163 164 SCHAR presMode; /* Presentation mode as defined in ETSI TS 101 154 */ 165 UCHAR dvbAncDataAvailable; /* Flag that indicates whether DVB ancillary data is present or not */ 166 UINT dvbAncDataPosition; /* Used to store the DVB ancillary data payload position in the bitstream (only one per frame) */ 167 UINT drcPayloadPosition[MAX_DRC_THREADS]; /* Used to store the DRC payload positions in the bitstream */ 168 169} CDrcInfo; 170 171typedef CDrcInfo *HANDLE_AAC_DRC; 172 173#endif /* AACDEC_DRC_TYPES_H */ 174 175