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 Audio Encoder ************************** 85 86 Initial author: M.Werner 87 contents/description: Huffman Bitcounter & coder 88 89******************************************************************************/ 90 91#ifndef __BITCOUNT_H 92#define __BITCOUNT_H 93 94 95#include "common_fix.h" 96#include "FDK_bitstream.h" 97#include "aacEnc_rom.h" 98 99#define INVALID_BITCOUNT (FDK_INT_MAX/4) 100 101/* 102 code book number table 103*/ 104 105enum codeBookNo{ 106 CODE_BOOK_ZERO_NO= 0, 107 CODE_BOOK_1_NO= 1, 108 CODE_BOOK_2_NO= 2, 109 CODE_BOOK_3_NO= 3, 110 CODE_BOOK_4_NO= 4, 111 CODE_BOOK_5_NO= 5, 112 CODE_BOOK_6_NO= 6, 113 CODE_BOOK_7_NO= 7, 114 CODE_BOOK_8_NO= 8, 115 CODE_BOOK_9_NO= 9, 116 CODE_BOOK_10_NO= 10, 117 CODE_BOOK_ESC_NO= 11, 118 CODE_BOOK_RES_NO= 12, 119 CODE_BOOK_PNS_NO= 13, 120 CODE_BOOK_IS_OUT_OF_PHASE_NO= 14, 121 CODE_BOOK_IS_IN_PHASE_NO= 15 122 123}; 124 125/* 126 code book index table 127*/ 128 129enum codeBookNdx{ 130 CODE_BOOK_ZERO_NDX, 131 CODE_BOOK_1_NDX, 132 CODE_BOOK_2_NDX, 133 CODE_BOOK_3_NDX, 134 CODE_BOOK_4_NDX, 135 CODE_BOOK_5_NDX, 136 CODE_BOOK_6_NDX, 137 CODE_BOOK_7_NDX, 138 CODE_BOOK_8_NDX, 139 CODE_BOOK_9_NDX, 140 CODE_BOOK_10_NDX, 141 CODE_BOOK_ESC_NDX, 142 CODE_BOOK_RES_NDX, 143 CODE_BOOK_PNS_NDX, 144 CODE_BOOK_IS_OUT_OF_PHASE_NDX, 145 CODE_BOOK_IS_IN_PHASE_NDX, 146 NUMBER_OF_CODE_BOOKS 147}; 148 149/* 150 code book lav table 151*/ 152 153enum codeBookLav{ 154 CODE_BOOK_ZERO_LAV=0, 155 CODE_BOOK_1_LAV=1, 156 CODE_BOOK_2_LAV=1, 157 CODE_BOOK_3_LAV=2, 158 CODE_BOOK_4_LAV=2, 159 CODE_BOOK_5_LAV=4, 160 CODE_BOOK_6_LAV=4, 161 CODE_BOOK_7_LAV=7, 162 CODE_BOOK_8_LAV=7, 163 CODE_BOOK_9_LAV=12, 164 CODE_BOOK_10_LAV=12, 165 CODE_BOOK_ESC_LAV=16, 166 CODE_BOOK_SCF_LAV=60, 167 CODE_BOOK_PNS_LAV=60 168 }; 169 170INT FDKaacEnc_bitCount(const SHORT *aQuantSpectrum, 171 const INT noOfSpecLines, 172 INT maxVal, 173 INT *bitCountLut); 174 175INT FDKaacEnc_countValues(SHORT *values, INT width, INT codeBook); 176 177INT FDKaacEnc_codeValues(SHORT *values, INT width, INT codeBook, HANDLE_FDK_BITSTREAM hBitstream); 178 179INT FDKaacEnc_codeScalefactorDelta(INT scalefactor, HANDLE_FDK_BITSTREAM hBitstream); 180 181inline INT FDKaacEnc_bitCountScalefactorDelta(const INT delta) 182{ 183 FDK_ASSERT( (0 <= (delta+CODE_BOOK_SCF_LAV)) && ((delta+CODE_BOOK_SCF_LAV)<(int)(sizeof(FDKaacEnc_huff_ltabscf)/sizeof((FDKaacEnc_huff_ltabscf[0])))) ); 184 return((INT)FDKaacEnc_huff_ltabscf[delta+CODE_BOOK_SCF_LAV]); 185} 186 187#endif 188