1 /* ----------------------------------------------------------------------------- 2 Software License for The Fraunhofer FDK AAC Codec Library for Android 3 4 Copyright 1995 - 2018 Fraunhofer-Gesellschaft zur Frderung der angewandten 5 Forschung e.V. All rights reserved. 6 7 1. INTRODUCTION 8 The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software 9 that implements the MPEG Advanced Audio Coding ("AAC") encoding and decoding 10 scheme for digital audio. This FDK AAC Codec software is intended to be used on 11 a wide variety of Android devices. 12 13 AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient 14 general perceptual audio codecs. AAC-ELD is considered the best-performing 15 full-bandwidth communications codec by independent studies and is widely 16 deployed. AAC has been standardized by ISO and IEC as part of the MPEG 17 specifications. 18 19 Patent licenses for necessary patent claims for the FDK AAC Codec (including 20 those of Fraunhofer) may be obtained through Via Licensing 21 (www.vialicensing.com) or through the respective patent owners individually for 22 the purpose of encoding or decoding bit streams in products that are compliant 23 with the ISO/IEC MPEG audio standards. Please note that most manufacturers of 24 Android devices already license these patent claims through Via Licensing or 25 directly from the patent owners, and therefore FDK AAC Codec software may 26 already be covered under those patent licenses when it is used for those 27 licensed purposes only. 28 29 Commercially-licensed AAC software libraries, including floating-point versions 30 with enhanced sound quality, are also available from Fraunhofer. Users are 31 encouraged to check the Fraunhofer website for additional applications 32 information and documentation. 33 34 2. COPYRIGHT LICENSE 35 36 Redistribution and use in source and binary forms, with or without modification, 37 are permitted without payment of copyright license fees provided that you 38 satisfy the following conditions: 39 40 You must retain the complete text of this software license in redistributions of 41 the FDK AAC Codec or your modifications thereto in source code form. 42 43 You must retain the complete text of this software license in the documentation 44 and/or other materials provided with redistributions of the FDK AAC Codec or 45 your modifications thereto in binary form. You must make available free of 46 charge copies of the complete source code of the FDK AAC Codec and your 47 modifications thereto to recipients of copies in binary form. 48 49 The name of Fraunhofer may not be used to endorse or promote products derived 50 from this library without prior written permission. 51 52 You may not charge copyright license fees for anyone to use, copy or distribute 53 the FDK AAC Codec software or your modifications thereto. 54 55 Your modified versions of the FDK AAC Codec must carry prominent notices stating 56 that you changed the software and the date of any change. For modified versions 57 of the FDK AAC Codec, the term "Fraunhofer FDK AAC Codec Library for Android" 58 must be replaced by the term "Third-Party Modified Version of the Fraunhofer FDK 59 AAC Codec Library for Android." 60 61 3. NO PATENT LICENSE 62 63 NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without 64 limitation the patents of Fraunhofer, ARE GRANTED BY THIS SOFTWARE LICENSE. 65 Fraunhofer provides no warranty of patent non-infringement with respect to this 66 software. 67 68 You may use this FDK AAC Codec software or modifications thereto only for 69 purposes that are authorized by appropriate patent licenses. 70 71 4. DISCLAIMER 72 73 This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright 74 holders and contributors "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, 75 including but not limited to the implied warranties of merchantability and 76 fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 77 CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, 78 or consequential damages, including but not limited to procurement of substitute 79 goods or services; loss of use, data, or profits, or business interruption, 80 however caused and on any theory of liability, whether in contract, strict 81 liability, or tort (including negligence), arising in any way out of the use of 82 this software, even if advised of the possibility of such damage. 83 84 5. CONTACT INFORMATION 85 86 Fraunhofer Institute for Integrated Circuits IIS 87 Attention: Audio and Multimedia Departments - FDK AAC LL 88 Am Wolfsmantel 33 89 91058 Erlangen, Germany 90 91 www.iis.fraunhofer.de/amm 92 amm-info (at) iis.fraunhofer.de 93 ----------------------------------------------------------------------------- */ 94 95 /******************* Library for basic calculation routines ******************** 96 97 Author(s): Oliver Moser 98 99 Description: ROM tables used by FDK tools 100 101 *******************************************************************************/ 102 103 #ifndef FDK_TOOLS_ROM_H 104 #define FDK_TOOLS_ROM_H 105 106 #include "common_fix.h" 107 #include "FDK_audio.h" 108 109 /* sinetables */ 110 111 /* None radix2 rotation vectors */ 112 extern RAM_ALIGN const FIXP_STB RotVectorReal60[60]; 113 extern RAM_ALIGN const FIXP_STB RotVectorImag60[60]; 114 extern RAM_ALIGN const FIXP_STB RotVectorReal192[192]; 115 extern RAM_ALIGN const FIXP_STB RotVectorImag192[192]; 116 extern RAM_ALIGN const FIXP_STB RotVectorReal240[210]; 117 extern RAM_ALIGN const FIXP_STB RotVectorImag240[210]; 118 extern RAM_ALIGN const FIXP_STB RotVectorReal480[480]; 119 extern RAM_ALIGN const FIXP_STB RotVectorImag480[480]; 120 extern RAM_ALIGN const FIXP_STB RotVectorReal6[6]; 121 extern RAM_ALIGN const FIXP_STB RotVectorImag6[6]; 122 extern RAM_ALIGN const FIXP_STB RotVectorReal12[12]; 123 extern RAM_ALIGN const FIXP_STB RotVectorImag12[12]; 124 extern RAM_ALIGN const FIXP_STB RotVectorReal24[24]; 125 extern RAM_ALIGN const FIXP_STB RotVectorImag24[24]; 126 extern RAM_ALIGN const FIXP_STB RotVectorReal48[48]; 127 extern RAM_ALIGN const FIXP_STB RotVectorImag48[48]; 128 extern RAM_ALIGN const FIXP_STB RotVectorReal80[80]; 129 extern RAM_ALIGN const FIXP_STB RotVectorImag80[80]; 130 extern RAM_ALIGN const FIXP_STB RotVectorReal96[96]; 131 extern RAM_ALIGN const FIXP_STB RotVectorImag96[96]; 132 extern RAM_ALIGN const FIXP_STB RotVectorReal384[384]; 133 extern RAM_ALIGN const FIXP_STB RotVectorImag384[384]; 134 extern RAM_ALIGN const FIXP_STB RotVectorReal20[20]; 135 extern RAM_ALIGN const FIXP_STB RotVectorImag20[20]; 136 extern RAM_ALIGN const FIXP_STB RotVectorReal120[120]; 137 extern RAM_ALIGN const FIXP_STB RotVectorImag120[120]; 138 139 /* Regular sine tables */ 140 extern RAM_ALIGN const FIXP_STP SineTable1024[]; 141 extern RAM_ALIGN const FIXP_STP SineTable512[]; 142 extern RAM_ALIGN const FIXP_STP SineTable480[]; 143 extern RAM_ALIGN const FIXP_STP SineTable384[]; 144 extern RAM_ALIGN const FIXP_STP SineTable80[]; 145 #ifdef INCLUDE_SineTable10 146 extern RAM_ALIGN const FIXP_STP SineTable10[]; 147 #endif 148 149 /* AAC-LC windows */ 150 extern RAM_ALIGN const FIXP_WTP SineWindow1024[]; 151 extern RAM_ALIGN const FIXP_WTP KBDWindow1024[]; 152 extern RAM_ALIGN const FIXP_WTP SineWindow128[]; 153 extern RAM_ALIGN const FIXP_WTP KBDWindow128[]; 154 155 extern RAM_ALIGN const FIXP_WTP SineWindow960[]; 156 extern RAM_ALIGN const FIXP_WTP KBDWindow960[]; 157 extern RAM_ALIGN const FIXP_WTP SineWindow120[]; 158 extern RAM_ALIGN const FIXP_WTP KBDWindow120[]; 159 160 /* AAC-LD windows */ 161 extern RAM_ALIGN const FIXP_WTP SineWindow512[]; 162 #define LowOverlapWindow512 SineWindow128 163 extern RAM_ALIGN const FIXP_WTP SineWindow480[]; 164 #define LowOverlapWindow480 SineWindow120 165 166 /* USAC TCX Window */ 167 extern RAM_ALIGN const FIXP_WTP SineWindow256[256]; 168 extern RAM_ALIGN const FIXP_WTP SineWindow192[]; 169 170 /* USAC 8/3 windows */ 171 extern RAM_ALIGN const FIXP_WTP SineWindow768[]; 172 extern RAM_ALIGN const FIXP_WTP KBDWindow768[]; 173 extern RAM_ALIGN const FIXP_WTP SineWindow96[]; 174 extern RAM_ALIGN const FIXP_WTP KBDWindow96[]; 175 176 /* DCT and others */ 177 extern RAM_ALIGN const FIXP_WTP SineWindow64[]; 178 extern RAM_ALIGN const FIXP_WTP SineWindow48[]; 179 extern RAM_ALIGN const FIXP_WTP SineWindow32[]; 180 extern RAM_ALIGN const FIXP_WTP SineWindow24[]; 181 extern RAM_ALIGN const FIXP_WTP SineWindow16[]; 182 extern RAM_ALIGN const FIXP_WTP SineWindow8[]; 183 184 /** 185 * \brief Helper table for window slope mapping. You should prefer the usage of 186 * the function FDKgetWindowSlope(), this table is only made public for some 187 * optimized access inside dct.cpp. 188 */ 189 extern const FIXP_WTP *const windowSlopes[2][4][9]; 190 191 /** 192 * \brief Window slope access helper. Obtain a window of given length and shape. 193 * \param length Length of the window slope. 194 * \param shape Shape index of the window slope. 0: sine window, 1: 195 * Kaiser-Bessel. Any other value is applied a mask of 1 to, mapping it to 196 * either 0 or 1. 197 * \param Pointer to window slope or NULL if the requested window slope is not 198 * available. 199 */ 200 const FIXP_WTP *FDKgetWindowSlope(int length, int shape); 201 202 extern const FIXP_WTP sin_twiddle_L64[]; 203 204 /* 205 * Filter coefficient type definition 206 */ 207 208 #if defined(ARCH_PREFER_MULT_16x16) || defined(ARCH_PREFER_MULT_32x16) 209 #define QMF_COEFF_16BIT 210 #endif 211 212 #define QMF_FILTER_PROTOTYPE_SIZE 640 213 #define QMF_NO_POLY 5 214 215 #ifdef QMF_COEFF_16BIT 216 #define FIXP_PFT FIXP_SGL 217 #define FIXP_QTW FIXP_SGL 218 #define FX_DBL2FX_QTW(x) FX_DBL2FX_SGL(x) 219 #else 220 #define FIXP_PFT FIXP_DBL 221 #define FIXP_QTW FIXP_DBL 222 223 #define FX_DBL2FX_QTW(x) (x) 224 225 #endif 226 227 #define QMF640_PFT_TABLE_SIZE (640 / 2 + QMF_NO_POLY) 228 229 /* Resampling twiddles for QMF */ 230 231 /* Not resampling twiddles */ 232 extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_cos32[32]; 233 extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_sin32[32]; 234 /* Adapted analysis post-twiddles for down-sampled HQ SBR */ 235 extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_cos_downsamp32[32]; 236 extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_sin_downsamp32[32]; 237 extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_cos64[64]; 238 extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_sin64[64]; 239 extern RAM_ALIGN const FIXP_PFT 240 qmf_pfilt640[QMF640_PFT_TABLE_SIZE + QMF_NO_POLY]; 241 extern RAM_ALIGN const FIXP_PFT qmf_pfilt640_vector[640]; 242 243 extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_cos40[40]; 244 extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_sin40[40]; 245 extern RAM_ALIGN const FIXP_PFT qmf_pfilt400[]; 246 extern RAM_ALIGN const FIXP_PFT qmf_pfilt200[]; 247 extern RAM_ALIGN const FIXP_PFT qmf_pfilt120[]; 248 249 extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_cos24[24]; 250 extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_sin24[24]; 251 extern RAM_ALIGN const FIXP_PFT qmf_pfilt240[]; 252 253 extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_cos16[16]; 254 extern RAM_ALIGN const FIXP_QTW qmf_phaseshift_sin16[16]; 255 256 #define QMF640_CLDFB_PFT_TABLE_SIZE (640) 257 #define QMF320_CLDFB_PFT_TABLE_SIZE (320) 258 #define QMF_CLDFB_PFT_SCALE 1 259 260 extern const FIXP_QTW qmf_phaseshift_cos32_cldfb_ana[32]; 261 extern const FIXP_QTW qmf_phaseshift_cos32_cldfb_syn[32]; 262 extern const FIXP_QTW qmf_phaseshift_sin32_cldfb[32]; 263 264 extern const FIXP_QTW qmf_phaseshift_cos16_cldfb_ana[16]; 265 extern const FIXP_QTW qmf_phaseshift_cos16_cldfb_syn[16]; 266 extern const FIXP_QTW qmf_phaseshift_sin16_cldfb[16]; 267 268 extern const FIXP_QTW qmf_phaseshift_cos8_cldfb_ana[8]; 269 extern const FIXP_QTW qmf_phaseshift_cos8_cldfb_syn[8]; 270 extern const FIXP_QTW qmf_phaseshift_sin8_cldfb[8]; 271 272 extern const FIXP_QTW qmf_phaseshift_cos64_cldfb[64]; 273 extern const FIXP_QTW qmf_phaseshift_sin64_cldfb[64]; 274 275 extern RAM_ALIGN const FIXP_PFT qmf_cldfb_640[QMF640_CLDFB_PFT_TABLE_SIZE]; 276 extern RAM_ALIGN const FIXP_PFT qmf_cldfb_320[QMF320_CLDFB_PFT_TABLE_SIZE]; 277 #define QMF160_CLDFB_PFT_TABLE_SIZE (160) 278 extern RAM_ALIGN const FIXP_PFT qmf_cldfb_160[QMF160_CLDFB_PFT_TABLE_SIZE]; 279 #define QMF80_CLDFB_PFT_TABLE_SIZE (80) 280 extern RAM_ALIGN const FIXP_PFT qmf_cldfb_80[QMF80_CLDFB_PFT_TABLE_SIZE]; 281 282 #define QMF320_MPSLDFB_PFT_TABLE_SIZE (320) 283 #define QMF640_MPSLDFB_PFT_TABLE_SIZE (640) 284 #define QMF_MPSLDFB_PFT_SCALE 1 285 286 extern const FIXP_PFT qmf_mpsldfb_320[QMF320_MPSLDFB_PFT_TABLE_SIZE]; 287 extern RAM_ALIGN const FIXP_PFT qmf_mpsldfb_640[QMF640_MPSLDFB_PFT_TABLE_SIZE]; 288 289 /** 290 * Audio bitstream element specific syntax flags: 291 */ 292 #define AC_EL_GA_CCE 0x00000001 /*!< GA AAC coupling channel element (CCE) */ 293 294 /* 295 * Raw Data Block list items. 296 */ 297 typedef enum { 298 element_instance_tag, 299 common_window, /* -> decision for link_sequence */ 300 global_gain, 301 ics_info, /* ics_reserved_bit, window_sequence, window_shape, max_sfb, 302 scale_factor_grouping, predictor_data_present, ltp_data_present, 303 ltp_data */ 304 max_sfb, 305 ms, /* ms_mask_present, ms_used */ 306 /*predictor_data_present,*/ /* part of ics_info */ 307 ltp_data_present, 308 ltp_data, 309 section_data, 310 scale_factor_data, 311 pulse, /* pulse_data_present, pulse_data */ 312 tns_data_present, 313 tns_data, 314 gain_control_data_present, 315 gain_control_data, 316 esc1_hcr, 317 esc2_rvlc, 318 spectral_data, 319 320 scale_factor_data_usac, 321 core_mode, /* -> decision for link_sequence */ 322 common_tw, 323 lpd_channel_stream, 324 tw_data, 325 noise, 326 ac_spectral_data, 327 fac_data, 328 tns_active, /* introduced in MPEG-D usac CD */ 329 tns_data_present_usac, 330 common_max_sfb, 331 332 coupled_elements, /* only for CCE parsing */ 333 gain_element_lists, /* only for CCE parsing */ 334 335 /* Non data list items */ 336 adtscrc_start_reg1, 337 adtscrc_start_reg2, 338 adtscrc_end_reg1, 339 adtscrc_end_reg2, 340 drmcrc_start_reg, 341 drmcrc_end_reg, 342 next_channel, 343 next_channel_loop, 344 link_sequence, 345 end_of_sequence 346 } rbd_id_t; 347 348 struct element_list { 349 const rbd_id_t *id; 350 const struct element_list *next[2]; 351 }; 352 353 typedef struct element_list element_list_t; 354 /** 355 * \brief get elementary stream pieces list for given parameters. 356 * \param aot audio object type 357 * \param epConfig the epConfig value from the current Audio Specific Config 358 * \param nChannels amount of channels contained in the current element. 359 * \param layer the layer of the current element. 360 * \param elFlags element specific flags. 361 * \return element_list_t parser guidance structure. 362 */ 363 const element_list_t *getBitstreamElementList(AUDIO_OBJECT_TYPE aot, 364 SCHAR epConfig, UCHAR nChannels, 365 UCHAR layer, UINT elFlags); 366 367 typedef enum { 368 /* n.a. */ 369 FDK_FORMAT_1_0 = 1, /* mono */ 370 FDK_FORMAT_2_0 = 2, /* stereo */ 371 FDK_FORMAT_3_0_FC = 3, /* 3/0.0 */ 372 FDK_FORMAT_3_1_0 = 4, /* 3/1.0 */ 373 FDK_FORMAT_5_0 = 5, /* 3/2.0 */ 374 FDK_FORMAT_5_1 = 6, /* 5.1 */ 375 FDK_FORMAT_7_1_ALT = 7, /* 5/2.1 ALT */ 376 /* 8 n.a.*/ 377 FDK_FORMAT_3_0_RC = 9, /* 2/1.0 */ 378 FDK_FORMAT_2_2_0 = 10, /* 2/2.0 */ 379 FDK_FORMAT_6_1 = 11, /* 3/3.1 */ 380 FDK_FORMAT_7_1 = 12, /* 3/4.1 */ 381 FDK_FORMAT_22_2 = 13, /* 22.2 */ 382 FDK_FORMAT_5_2_1 = 14, /* 5/2.1*/ 383 FDK_FORMAT_5_5_2 = 15, /* 5/5.2 */ 384 FDK_FORMAT_9_1 = 16, /* 5/4.1 */ 385 FDK_FORMAT_6_5_1 = 17, /* 6/5.1 */ 386 FDK_FORMAT_6_7_1 = 18, /* 6/7.1 */ 387 FDK_FORMAT_5_6_1 = 19, /* 5/6.1 */ 388 FDK_FORMAT_7_6_1 = 20, /* 7/6.1 */ 389 FDK_FORMAT_IN_LISTOFCHANNELS = 21, 390 FDK_FORMAT_OUT_LISTOFCHANNELS = 22, 391 /* 20 formats + In & Out list of channels */ 392 FDK_NFORMATS = 23, 393 FDK_FORMAT_FAIL = -1 394 } FDK_converter_formatid_t; 395 396 extern const INT format_nchan[FDK_NFORMATS + 9 - 2]; 397 398 #endif 399
