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/*! 85 \file 86 \brief SBR bit writing 87*/ 88#ifndef __BIT_SBR_H 89#define __BIT_SBR_H 90 91#include "sbr_def.h" 92#include "cmondata.h" 93#include "fram_gen.h" 94 95struct SBR_ENV_DATA; 96 97struct SBR_BITSTREAM_DATA 98{ 99 INT TotalBits; 100 INT PayloadBits; 101 INT FillBits; 102 INT HeaderActive; 103 INT NrSendHeaderData; /**< input from commandline */ 104 INT CountSendHeaderData; /**< modulo count. If < 0 then no counting is done (no SBR headers) */ 105}; 106 107typedef struct SBR_BITSTREAM_DATA *HANDLE_SBR_BITSTREAM_DATA; 108 109struct SBR_HEADER_DATA 110{ 111 AMP_RES sbr_amp_res; 112 INT sbr_start_frequency; 113 INT sbr_stop_frequency; 114 INT sbr_xover_band; 115 INT sbr_noise_bands; 116 INT sbr_data_extra; 117 INT header_extra_1; 118 INT header_extra_2; 119 INT sbr_lc_stereo_mode; 120 INT sbr_limiter_bands; 121 INT sbr_limiter_gains; 122 INT sbr_interpol_freq; 123 INT sbr_smoothing_length; 124 INT alterScale; 125 INT freqScale; 126 127 /* 128 element of channelpairelement 129 */ 130 INT coupling; 131 INT prev_coupling; 132 133 /* 134 element of singlechannelelement 135 */ 136 137}; 138typedef struct SBR_HEADER_DATA *HANDLE_SBR_HEADER_DATA; 139 140struct SBR_ENV_DATA 141{ 142 143 INT sbr_xpos_ctrl; 144 INT freq_res_fixfix; 145 146 147 INVF_MODE sbr_invf_mode; 148 INVF_MODE sbr_invf_mode_vec[MAX_NUM_NOISE_VALUES]; 149 150 XPOS_MODE sbr_xpos_mode; 151 152 INT ienvelope[MAX_ENVELOPES][MAX_FREQ_COEFFS]; 153 154 INT codeBookScfLavBalance; 155 INT codeBookScfLav; 156 const INT *hufftableTimeC; 157 const INT *hufftableFreqC; 158 const UCHAR *hufftableTimeL; 159 const UCHAR *hufftableFreqL; 160 161 const INT *hufftableLevelTimeC; 162 const INT *hufftableBalanceTimeC; 163 const INT *hufftableLevelFreqC; 164 const INT *hufftableBalanceFreqC; 165 const UCHAR *hufftableLevelTimeL; 166 const UCHAR *hufftableBalanceTimeL; 167 const UCHAR *hufftableLevelFreqL; 168 const UCHAR *hufftableBalanceFreqL; 169 170 171 const UCHAR *hufftableNoiseTimeL; 172 const INT *hufftableNoiseTimeC; 173 const UCHAR *hufftableNoiseFreqL; 174 const INT *hufftableNoiseFreqC; 175 176 const UCHAR *hufftableNoiseLevelTimeL; 177 const INT *hufftableNoiseLevelTimeC; 178 const UCHAR *hufftableNoiseBalanceTimeL; 179 const INT *hufftableNoiseBalanceTimeC; 180 const UCHAR *hufftableNoiseLevelFreqL; 181 const INT *hufftableNoiseLevelFreqC; 182 const UCHAR *hufftableNoiseBalanceFreqL; 183 const INT *hufftableNoiseBalanceFreqC; 184 185 HANDLE_SBR_GRID hSbrBSGrid; 186 187 INT noHarmonics; 188 INT addHarmonicFlag; 189 UCHAR addHarmonic[MAX_FREQ_COEFFS]; 190 191 192 /* calculated helper vars */ 193 INT si_sbr_start_env_bits_balance; 194 INT si_sbr_start_env_bits; 195 INT si_sbr_start_noise_bits_balance; 196 INT si_sbr_start_noise_bits; 197 198 INT noOfEnvelopes; 199 INT noScfBands[MAX_ENVELOPES]; 200 INT domain_vec[MAX_ENVELOPES]; 201 INT domain_vec_noise[MAX_ENVELOPES]; 202 SCHAR sbr_noise_levels[MAX_FREQ_COEFFS]; 203 INT noOfnoisebands; 204 205 INT balance; 206 AMP_RES init_sbr_amp_res; 207 AMP_RES currentAmpResFF; 208 209 /* extended data */ 210 INT extended_data; 211 INT extension_size; 212 INT extension_id; 213 UCHAR extended_data_buffer[SBR_EXTENDED_DATA_MAX_CNT]; 214 215 UCHAR ldGrid; 216}; 217typedef struct SBR_ENV_DATA *HANDLE_SBR_ENV_DATA; 218 219 220 221INT FDKsbrEnc_WriteEnvSingleChannelElement(struct SBR_HEADER_DATA *sbrHeaderData, 222 struct T_PARAMETRIC_STEREO *hParametricStereo, 223 struct SBR_BITSTREAM_DATA *sbrBitstreamData, 224 struct SBR_ENV_DATA *sbrEnvData, 225 struct COMMON_DATA *cmonData, 226 UINT sbrSyntaxFlags); 227 228 229INT FDKsbrEnc_WriteEnvChannelPairElement(struct SBR_HEADER_DATA *sbrHeaderData, 230 struct T_PARAMETRIC_STEREO *hParametricStereo, 231 struct SBR_BITSTREAM_DATA *sbrBitstreamData, 232 struct SBR_ENV_DATA *sbrEnvDataLeft, 233 struct SBR_ENV_DATA *sbrEnvDataRight, 234 struct COMMON_DATA *cmonData, 235 UINT sbrSyntaxFlags); 236 237 238 239INT FDKsbrEnc_CountSbrChannelPairElement (struct SBR_HEADER_DATA *sbrHeaderData, 240 struct T_PARAMETRIC_STEREO *hParametricStereo, 241 struct SBR_BITSTREAM_DATA *sbrBitstreamData, 242 struct SBR_ENV_DATA *sbrEnvDataLeft, 243 struct SBR_ENV_DATA *sbrEnvDataRight, 244 struct COMMON_DATA *cmonData, 245 UINT sbrSyntaxFlags); 246 247 248 249/* debugging and tuning functions */ 250 251/*#define SBR_ENV_STATISTICS */ 252 253 254/*#define SBR_PAYLOAD_MONITOR*/ 255 256#endif 257