1/* ----------------------------------------------------------------------------- 2Software License for The Fraunhofer FDK AAC Codec Library for Android 3 4© Copyright 1995 - 2018 Fraunhofer-Gesellschaft zur Förderung der angewandten 5Forschung e.V. All rights reserved. 6 7 1. INTRODUCTION 8The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software 9that implements the MPEG Advanced Audio Coding ("AAC") encoding and decoding 10scheme for digital audio. This FDK AAC Codec software is intended to be used on 11a wide variety of Android devices. 12 13AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient 14general perceptual audio codecs. AAC-ELD is considered the best-performing 15full-bandwidth communications codec by independent studies and is widely 16deployed. AAC has been standardized by ISO and IEC as part of the MPEG 17specifications. 18 19Patent licenses for necessary patent claims for the FDK AAC Codec (including 20those of Fraunhofer) may be obtained through Via Licensing 21(www.vialicensing.com) or through the respective patent owners individually for 22the purpose of encoding or decoding bit streams in products that are compliant 23with the ISO/IEC MPEG audio standards. Please note that most manufacturers of 24Android devices already license these patent claims through Via Licensing or 25directly from the patent owners, and therefore FDK AAC Codec software may 26already be covered under those patent licenses when it is used for those 27licensed purposes only. 28 29Commercially-licensed AAC software libraries, including floating-point versions 30with enhanced sound quality, are also available from Fraunhofer. Users are 31encouraged to check the Fraunhofer website for additional applications 32information and documentation. 33 342. COPYRIGHT LICENSE 35 36Redistribution and use in source and binary forms, with or without modification, 37are permitted without payment of copyright license fees provided that you 38satisfy the following conditions: 39 40You must retain the complete text of this software license in redistributions of 41the FDK AAC Codec or your modifications thereto in source code form. 42 43You must retain the complete text of this software license in the documentation 44and/or other materials provided with redistributions of the FDK AAC Codec or 45your modifications thereto in binary form. You must make available free of 46charge copies of the complete source code of the FDK AAC Codec and your 47modifications thereto to recipients of copies in binary form. 48 49The name of Fraunhofer may not be used to endorse or promote products derived 50from this library without prior written permission. 51 52You may not charge copyright license fees for anyone to use, copy or distribute 53the FDK AAC Codec software or your modifications thereto. 54 55Your modified versions of the FDK AAC Codec must carry prominent notices stating 56that you changed the software and the date of any change. For modified versions 57of the FDK AAC Codec, the term "Fraunhofer FDK AAC Codec Library for Android" 58must be replaced by the term "Third-Party Modified Version of the Fraunhofer FDK 59AAC Codec Library for Android." 60 613. NO PATENT LICENSE 62 63NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without 64limitation the patents of Fraunhofer, ARE GRANTED BY THIS SOFTWARE LICENSE. 65Fraunhofer provides no warranty of patent non-infringement with respect to this 66software. 67 68You may use this FDK AAC Codec software or modifications thereto only for 69purposes that are authorized by appropriate patent licenses. 70 714. DISCLAIMER 72 73This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright 74holders and contributors "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, 75including but not limited to the implied warranties of merchantability and 76fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 77CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, 78or consequential damages, including but not limited to procurement of substitute 79goods or services; loss of use, data, or profits, or business interruption, 80however caused and on any theory of liability, whether in contract, strict 81liability, or tort (including negligence), arising in any way out of the use of 82this software, even if advised of the possibility of such damage. 83 845. CONTACT INFORMATION 85 86Fraunhofer Institute for Integrated Circuits IIS 87Attention: Audio and Multimedia Departments - FDK AAC LL 88Am Wolfsmantel 33 8991058 Erlangen, Germany 90 91www.iis.fraunhofer.de/amm 92amm-info@iis.fraunhofer.de 93----------------------------------------------------------------------------- */ 94 95/******************* Library for basic calculation routines ******************** 96 97 Author(s): M. Lohwasser 98 99 Description: common bitbuffer read/write routines 100 101*******************************************************************************/ 102 103#ifndef FDK_BITBUFFER_H 104#define FDK_BITBUFFER_H 105 106#include "FDK_archdef.h" 107#include "machine_type.h" 108 109/* leave 3 bits headroom so MAX_BUFSIZE can be represented in bits as well. */ 110#define MAX_BUFSIZE_BYTES (0x10000000) 111 112typedef struct { 113 UINT ValidBits; 114 UINT ReadOffset; 115 UINT WriteOffset; 116 UINT BitCnt; 117 UINT BitNdx; 118 119 UCHAR *Buffer; 120 UINT bufSize; 121 UINT bufBits; 122} FDK_BITBUF; 123 124typedef FDK_BITBUF *HANDLE_FDK_BITBUF; 125 126#ifdef __cplusplus 127extern "C" { 128#endif 129 130extern const UINT BitMask[32 + 1]; 131 132/** The BitBuffer Functions are called straight from FDK_bitstream Interface. 133 For Functions functional survey look there. 134*/ 135 136void FDK_CreateBitBuffer(HANDLE_FDK_BITBUF *hBitBuffer, UCHAR *pBuffer, 137 UINT bufSize); 138 139void FDK_InitBitBuffer(HANDLE_FDK_BITBUF hBitBuffer, UCHAR *pBuffer, 140 UINT bufSize, UINT validBits); 141 142void FDK_ResetBitBuffer(HANDLE_FDK_BITBUF hBitBuffer); 143 144void FDK_DeleteBitBuffer(HANDLE_FDK_BITBUF hBitBuffer); 145 146INT FDK_get(HANDLE_FDK_BITBUF hBitBuffer, const UINT numberOfBits); 147 148INT FDK_get32(HANDLE_FDK_BITBUF hBitBuf); 149 150void FDK_put(HANDLE_FDK_BITBUF hBitBuffer, UINT value, const UINT numberOfBits); 151 152INT FDK_getBwd(HANDLE_FDK_BITBUF hBitBuffer, const UINT numberOfBits); 153void FDK_putBwd(HANDLE_FDK_BITBUF hBitBuffer, UINT value, 154 const UINT numberOfBits); 155 156void FDK_pushBack(HANDLE_FDK_BITBUF hBitBuffer, const UINT numberOfBits, 157 UCHAR config); 158 159void FDK_pushForward(HANDLE_FDK_BITBUF hBitBuffer, const UINT numberOfBits, 160 UCHAR config); 161 162void FDK_byteAlign(HANDLE_FDK_BITBUF hBitBuffer, UCHAR config); 163 164UINT FDK_getValidBits(HANDLE_FDK_BITBUF hBitBuffer); 165 166INT FDK_getFreeBits(HANDLE_FDK_BITBUF hBitBuffer); 167 168void FDK_setBitCnt(HANDLE_FDK_BITBUF hBitBuffer, const UINT value); 169INT FDK_getBitCnt(HANDLE_FDK_BITBUF hBitBuffer); 170 171void FDK_Feed(HANDLE_FDK_BITBUF hBitBuffer, const UCHAR inputBuffer[], 172 const UINT bufferSize, UINT *bytesValid); 173 174void FDK_Copy(HANDLE_FDK_BITBUF hBitBufDst, HANDLE_FDK_BITBUF hBitBufSrc, 175 UINT *bytesValid); 176 177void FDK_Fetch(HANDLE_FDK_BITBUF hBitBuffer, UCHAR outBuf[], UINT *writeBytes); 178 179#ifdef __cplusplus 180} 181#endif 182 183#endif 184