1 2/* ----------------------------------------------------------------------------------------------------------- 3Software License for The Fraunhofer FDK AAC Codec Library for Android 4 5© Copyright 1995 - 2012 Fraunhofer-Gesellschaft zur Förderung 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) decoder tool for AAC 88 89******************************************************************************/ 90 91#ifndef AACDEC_DRC_H 92#define AACDEC_DRC_H 93 94#include "tp_data.h" /* for program config element support */ 95 96 97#include "aacdec_drc_types.h" 98#include "channel.h" 99#include "FDK_bitstream.h" 100 101#define AACDEC_DRC_DEFAULT_REF_LEVEL ( 108 ) /* -27 dB below full scale (typical for movies) */ 102#define AACDEC_DRC_DFLT_EXPIRY_FRAMES ( 40 ) /* Default DRC data expiry time in AAC frames */ 103#define MAX_SBR_SYN_CHAN ( 64 ) 104#define MAX_SBR_COLS ( 32 ) 105 106 107/** 108 * \brief DRC module setting parameters 109 */ 110typedef enum 111{ 112 DRC_CUT_SCALE = 0, 113 DRC_BOOST_SCALE, 114 TARGET_REF_LEVEL, 115 DRC_BS_DELAY, 116 DRC_DATA_EXPIRY_FRAME, 117 APPLY_HEAVY_COMPRESSION 118 119} AACDEC_DRC_PARAM; 120 121 122/** 123 * \brief DRC module interface functions 124 */ 125void aacDecoder_drcInit ( 126 HANDLE_AAC_DRC self ); 127 128void aacDecoder_drcInitChannelData ( 129 CDrcChannelData *pDrcChannel ); 130 131AAC_DECODER_ERROR aacDecoder_drcSetParam ( 132 HANDLE_AAC_DRC self, 133 AACDEC_DRC_PARAM param, 134 INT value ); 135 136int aacDecoder_drcMarkPayload ( 137 HANDLE_AAC_DRC self, 138 HANDLE_FDK_BITSTREAM hBs, 139 AACDEC_DRC_PAYLOAD_TYPE type ); 140 141int aacDecoder_drcProlog ( 142 HANDLE_AAC_DRC self, 143 HANDLE_FDK_BITSTREAM hBs, 144 CAacDecoderStaticChannelInfo *pAacDecoderStaticChannelInfo[], 145 UCHAR pceInstanceTag, 146 UCHAR channelMapping[], 147 int numChannels ); 148 149void aacDecoder_drcApply ( 150 HANDLE_AAC_DRC self, 151 void *pSbrDec, 152 CAacDecoderChannelInfo *pAacDecoderChannelInfo, 153 CDrcChannelData *pDrcDat, 154 int ch, 155 int aacFrameSize, 156 int bSbrPresent ); 157 158int aacDecoder_drcEpilog ( 159 HANDLE_AAC_DRC self, 160 HANDLE_FDK_BITSTREAM hBs, 161 CAacDecoderStaticChannelInfo *pAacDecoderStaticChannelInfo[], 162 UCHAR pceInstanceTag, 163 UCHAR channelMapping[], 164 int validChannels ); 165 166 167#endif /* AACDEC_DRC_H */ 168