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 /******************* MPEG transport format decoder library ********************* 96 97 Author(s): Manuel Jander 98 99 Description: MPEG Transport decoder 100 101 *******************************************************************************/ 102 103 #ifndef TPDEC_LIB_H 104 #define TPDEC_LIB_H 105 106 #include "tp_data.h" 107 108 #include "FDK_bitstream.h" 109 110 typedef enum { 111 TRANSPORTDEC_OK = 0, /*!< All fine. */ 112 113 /* Synchronization errors. Wait for new input data and try again. */ 114 tpdec_sync_error_start = 0x100, 115 TRANSPORTDEC_NOT_ENOUGH_BITS, /*!< Out of bits. Provide more bits and try 116 again. */ 117 TRANSPORTDEC_SYNC_ERROR, /*!< No sync was found or sync got lost. Keep trying. 118 */ 119 tpdec_sync_error_end, 120 121 /* Decode errors. Mostly caused due to bit errors. */ 122 tpdec_decode_error_start = 0x400, 123 TRANSPORTDEC_PARSE_ERROR, /*!< Bitstream data showed inconsistencies (wrong 124 syntax). */ 125 TRANSPORTDEC_UNSUPPORTED_FORMAT, /*!< Unsupported format or feature found in 126 the bitstream data. */ 127 TRANSPORTDEC_CRC_ERROR, /*!< CRC error encountered in bitstream data. */ 128 tpdec_decode_error_end, 129 130 /* Fatal errors. Stop immediately on one of these errors! */ 131 tpdec_fatal_error_start = 0x200, 132 TRANSPORTDEC_UNKOWN_ERROR, /*!< An unknown error occured. */ 133 TRANSPORTDEC_INVALID_PARAMETER, /*!< An invalid parameter was passed to a 134 function. */ 135 TRANSPORTDEC_NEED_TO_RESTART, /*!< The decoder needs to be restarted, since 136 the requiered configuration change cannot 137 be performed. */ 138 TRANSPORTDEC_TOO_MANY_BITS, /*!< In case of packet based formats: Supplied 139 number of bits exceed the size of the 140 internal bit buffer. */ 141 tpdec_fatal_error_end 142 143 } TRANSPORTDEC_ERROR; 144 145 /** Macro to identify decode errors. */ 146 #define TPDEC_IS_DECODE_ERROR(err) \ 147 (((err >= tpdec_decode_error_start) && (err <= tpdec_decode_error_end)) ? 1 \ 148 : 0) 149 /** Macro to identify fatal errors. */ 150 #define TPDEC_IS_FATAL_ERROR(err) \ 151 (((err >= tpdec_fatal_error_start) && (err <= tpdec_fatal_error_end)) ? 1 : 0) 152 153 /** 154 * \brief Parameter identifiers for transportDec_SetParam() 155 */ 156 typedef enum { 157 TPDEC_PARAM_MINIMIZE_DELAY = 1, /** Delay minimization strategy. 0: none, 1: 158 discard as many frames as possible. */ 159 TPDEC_PARAM_EARLY_CONFIG, /** Enable early config discovery. */ 160 TPDEC_PARAM_IGNORE_BUFFERFULLNESS, /** Ignore buffer fullness. */ 161 TPDEC_PARAM_SET_BITRATE, /** Set average bit rate for bit stream interruption 162 frame misses estimation. */ 163 TPDEC_PARAM_RESET, /** Reset transport decoder instance status. */ 164 TPDEC_PARAM_BURST_PERIOD, /** Set data reception burst period in mili seconds. 165 */ 166 TPDEC_PARAM_TARGETLAYOUT, /** Set CICP target layout */ 167 TPDEC_PARAM_FORCE_CONFIG_CHANGE, /** Force config change for next received 168 config */ 169 TPDEC_PARAM_USE_ELEM_SKIPPING 170 } TPDEC_PARAM; 171 172 /*! 173 \brief Reset Program Config Element. 174 \param pPce Program Config Element structure. 175 \return void 176 */ 177 void CProgramConfig_Reset(CProgramConfig *pPce); 178 179 /*! 180 \brief Initialize Program Config Element. 181 \param pPce Program Config Element structure. 182 \return void 183 */ 184 void CProgramConfig_Init(CProgramConfig *pPce); 185 186 /*! 187 \brief Inquire state of present Program Config Element 188 structure. \param pPce Program Config Element structure. \return 189 1 if the PCE structure is filled correct, 0 if no valid PCE present. 190 */ 191 int CProgramConfig_IsValid(const CProgramConfig *pPce); 192 193 /*! 194 \brief Read Program Config Element. 195 \param pPce Program Config Element structure. 196 \param bs Bitstream buffer to read from. 197 \param alignAnchor Align bitstream to alignAnchor bits after all read 198 operations. \return void 199 */ 200 void CProgramConfig_Read(CProgramConfig *pPce, HANDLE_FDK_BITSTREAM bs, 201 UINT alignAnchor); 202 203 /*! 204 \brief Compare two Program Config Elements. 205 \param pPce1 Pointer to first Program Config Element structure. 206 \param pPce2 Pointer to second Program Config Element structure. 207 \return -1 if PCEs are completely different, 208 0 if PCEs are completely equal, 209 1 if PCEs are different but have the same channel 210 config, 2 if PCEs have different channel config but same number of channels. 211 */ 212 int CProgramConfig_Compare(const CProgramConfig *const pPce1, 213 const CProgramConfig *const pPce2); 214 215 /*! 216 \brief Get a Program Config Element that matches the predefined 217 MPEG-4 channel configurations 1-14. \param pPce Program Config 218 Element structure. \param channelConfig MPEG-4 channel configuration. \return 219 void 220 */ 221 void CProgramConfig_GetDefault(CProgramConfig *pPce, const UINT channelConfig); 222 223 /** 224 * \brief Lookup and verify a given element. The decoder calls this 225 * method with every new element ID found in the bitstream. 226 * 227 * \param pPce A valid Program config structure. 228 * \param chConfig MPEG-4 channel configuration. 229 * \param tag Tag of the current element to be looked up. 230 * \param channelIdx The current channel count of the decoder parser. 231 * \param chMapping Array to store the canonical channel mapping indexes. 232 * \param chType Array to store the audio channel type. 233 * \param chIndex Array to store the individual audio channel type index. 234 * \param chDescrLen Length of the output channel description array. 235 * \param elMapping Pointer where the canonical element index is stored. 236 * \param elType The element id of the current element to be looked up. 237 * 238 * \return Non-zero if the element belongs to the current program, 239 * zero if it does not. 240 */ 241 int CProgramConfig_LookupElement(CProgramConfig *pPce, UINT chConfig, 242 const UINT tag, const UINT channelIdx, 243 UCHAR chMapping[], AUDIO_CHANNEL_TYPE chType[], 244 UCHAR chIndex[], const UINT chDescrLen, 245 UCHAR *elMapping, MP4_ELEMENT_ID elList[], 246 MP4_ELEMENT_ID elType); 247 248 /** 249 * \brief Get table of channel indices in the order of their 250 * appearance in by the program config field. 251 * \param pPce A valid program config structure. 252 * \param pceChMap Array to store the channel mapping indices like they 253 * appear in the PCE. 254 * \param pceChMapLen Lenght of the channel mapping index array (pceChMap). 255 * 256 * \return Non-zero if any error occured otherwise zero. 257 */ 258 int CProgramConfig_GetPceChMap(const CProgramConfig *pPce, UCHAR pceChMap[], 259 const UINT pceChMapLen); 260 261 /** 262 * \brief Get table of elements in canonical order from a 263 * give program config field. 264 * \param pPce A valid program config structure. 265 * \param table An array where the element IDs are stored. 266 * \param elListSize The length of the table array. 267 * \param pChMapIdx Pointer to a field receiving the corresponding 268 * implicit channel configuration index of the given 269 * PCE. If none can be found it receives the value 0. 270 * \return Total element count including all SCE, CPE and LFE. 271 */ 272 int CProgramConfig_GetElementTable(const CProgramConfig *pPce, 273 MP4_ELEMENT_ID table[], const INT elListSize, 274 UCHAR *pChMapIdx); 275 276 /** 277 * \brief Get channel description (type and index) for implicit 278 configurations (chConfig > 0) in MPEG canonical order. 279 * \param chConfig MPEG-4 channel configuration. 280 * \param chType Array to store the audio channel type. 281 * \param chIndex Array to store the individual audio channel type index. 282 * \return void 283 */ 284 void CProgramConfig_GetChannelDescription(const UINT chConfig, 285 const CProgramConfig *pPce, 286 AUDIO_CHANNEL_TYPE chType[], 287 UCHAR chIndex[]); 288 289 /** 290 * \brief Initialize a given AudioSpecificConfig structure. 291 * \param pAsc A pointer to an allocated CSAudioSpecificConfig struct. 292 * \return void 293 */ 294 void AudioSpecificConfig_Init(CSAudioSpecificConfig *pAsc); 295 296 /** 297 * \brief Parse a AudioSpecificConfig from a given bitstream handle. 298 * 299 * \param pAsc A pointer to an allocated 300 * CSAudioSpecificConfig struct. 301 * \param hBs Bitstream handle. 302 * \param fExplicitBackwardCompatible Do explicit backward compatibility 303 * parsing if set (flag). 304 * \param cb pointer to structure holding callback information 305 * \param configMode Config modes: memory allocation mode or config change 306 * detection mode. 307 * \param configChanged Indicates a config change. 308 * \param m_aot in case of unequal AOT_NULL_OBJECT only the specific config is 309 * parsed. 310 * 311 * \return Total element count including all SCE, CPE and LFE. 312 */ 313 TRANSPORTDEC_ERROR AudioSpecificConfig_Parse( 314 CSAudioSpecificConfig *pAsc, HANDLE_FDK_BITSTREAM hBs, 315 int fExplicitBackwardCompatible, CSTpCallBacks *cb, UCHAR configMode, 316 UCHAR configChanged, AUDIO_OBJECT_TYPE m_aot); 317 318 /* CELP stuff */ 319 enum { MPE = 0, RPE = 1, fs8KHz = 0, fs16KHz = 1 }; 320 321 /* Defintion of flags that can be passed to transportDecOpen() */ 322 #define TP_FLAG_MPEG4 1 323 324 /* Capability flags */ 325 #define CAPF_TPDEC_ADIF \ 326 0x00001000 /**< Flag indicating support for ADIF transport format. */ 327 #define CAPF_TPDEC_ADTS \ 328 0x00002000 /**< Flag indicating support for ADTS transport format. */ 329 #define CAPF_TPDEC_LOAS \ 330 0x00004000 /**< Flag indicating support for LOAS transport format. */ 331 #define CAPF_TPDEC_LATM \ 332 0x00008000 /**< Flag indicating support for LATM transport format. */ 333 #define CAPF_TPDEC_RAWPACKETS \ 334 0x00010000 /**< Flag indicating support for raw packets transport format. */ 335 336 typedef struct TRANSPORTDEC *HANDLE_TRANSPORTDEC; 337 338 /** 339 * \brief Configure Transport Decoder via a binary coded AudioSpecificConfig or 340 * StreamMuxConfig. The previously requested configuration callback will be 341 * called as well. The buffer conf must containt a SMC in case of 342 * LOAS/LATM transport format, and an ASC elseways. 343 * 344 * \param hTp Handle of a transport decoder. 345 * \param conf UCHAR buffer of the binary coded config (ASC or SMC). 346 * \param length The length in bytes of the conf buffer. 347 * 348 * \return Error code. 349 */ 350 TRANSPORTDEC_ERROR transportDec_OutOfBandConfig(const HANDLE_TRANSPORTDEC hTp, 351 UCHAR *conf, const UINT length, 352 const UINT layer); 353 354 /** 355 * \brief Configure Transport Decoder via a binary coded USAC/RSV603DA Config. 356 * The buffer newConfig contains a binary coded USAC/RSV603DA config of 357 * length newConfigLength bytes. If the new config and the previous config are 358 * different configChanged is set to 1 otherwise it is set to 0. 359 * 360 * \param hTp Handle of a transport decoder. 361 * \param newConfig buffer of the binary coded config. 362 * \param newConfigLength Length of new config in bytes. 363 * \param buildUpStatus Indicates build up status: off|on|idle. 364 * \param configChanged Indicates if config changed. 365 * \param layer Instance layer. 366 * 367 * \return Error code. 368 */ 369 TRANSPORTDEC_ERROR transportDec_InBandConfig( 370 const HANDLE_TRANSPORTDEC hTp, UCHAR *newConfig, const UINT newConfigLength, 371 const UCHAR buildUpStatus, UCHAR *configChanged, const UINT layer, 372 UCHAR *implicitExplicitCfgDiff); 373 374 /** 375 * \brief Open Transport medium for reading. 376 * 377 * \param transportDecFmt Format of the transport decoder medium to be accessed. 378 * \param flags Transport decoder flags. Currently only TP_FLAG_MPEG4, 379 * which signals a MPEG4 capable decoder (relevant for ADTS only). 380 * 381 * \return A pointer to a valid and allocated HANDLE_TRANSPORTDEC or a null 382 * pointer on failure. 383 */ 384 HANDLE_TRANSPORTDEC transportDec_Open(TRANSPORT_TYPE transportDecFmt, 385 const UINT flags, const UINT nrOfLayer); 386 387 /** 388 * \brief Register configuration change callback. 389 * \param hTp Handle of transport decoder. 390 * \param cbUpdateConfig Pointer to a callback function to handle audio config 391 * changes. 392 * \param user_data void pointer for user data passed to the callback as 393 * first parameter. 394 * \return 0 on success. 395 */ 396 int transportDec_RegisterAscCallback(HANDLE_TRANSPORTDEC hTp, 397 const cbUpdateConfig_t cbUpdateConfig, 398 void *user_data); 399 400 /** 401 * \brief Register free memory callback. 402 * \param hTp Handle of transport decoder. 403 * \param cbFreeMem Pointer to a callback function to free config dependent 404 * memory. 405 * \param user_data void pointer for user data passed to the callback as 406 * first parameter. 407 * \return 0 on success. 408 */ 409 int transportDec_RegisterFreeMemCallback(HANDLE_TRANSPORTDEC hTp, 410 const cbFreeMem_t cbFreeMem, 411 void *user_data); 412 413 /** 414 * \brief Register config change control callback. 415 * \param hTp Handle of transport decoder. 416 * \param cbCtrlCFGChange Pointer to a callback function for config change 417 * control. 418 * \param user_data void pointer for user data passed to the callback as 419 * first parameter. 420 * \return 0 on success. 421 */ 422 int transportDec_RegisterCtrlCFGChangeCallback( 423 HANDLE_TRANSPORTDEC hTp, const cbCtrlCFGChange_t cbCtrlCFGChange, 424 void *user_data); 425 426 /** 427 * \brief Register SSC parser callback. 428 * \param hTp Handle of transport decoder. 429 * \param cbUpdateConfig Pointer to a callback function to handle SSC parsing. 430 * \param user_data void pointer for user data passed to the callback as 431 * first parameter. 432 * \return 0 on success. 433 */ 434 int transportDec_RegisterSscCallback(HANDLE_TRANSPORTDEC hTp, 435 const cbSsc_t cbSscParse, void *user_data); 436 437 /** 438 * \brief Register SBR header parser callback. 439 * \param hTp Handle of transport decoder. 440 * \param cbUpdateConfig Pointer to a callback function to handle SBR header 441 * parsing. 442 * \param user_data void pointer for user data passed to the callback as 443 * first parameter. 444 * \return 0 on success. 445 */ 446 int transportDec_RegisterSbrCallback(HANDLE_TRANSPORTDEC hTpDec, 447 const cbSbr_t cbSbr, void *user_data); 448 449 /** 450 * \brief Register USAC SC parser callback. 451 * \param hTp Handle of transport decoder. 452 * \param cbUpdateConfig Pointer to a callback function to handle USAC SC 453 * parsing. 454 * \param user_data void pointer for user data passed to the callback as 455 * first parameter. 456 * \return 0 on success. 457 */ 458 int transportDec_RegisterUsacCallback(HANDLE_TRANSPORTDEC hTpDec, 459 const cbUsac_t cbUsac, void *user_data); 460 461 /** 462 * \brief Register uniDrcConfig and loudnessInfoSet parser 463 * callback. 464 * \param hTp Handle of transport decoder. 465 * \param cbUpdateConfig Pointer to a callback function to handle uniDrcConfig 466 * and loudnessInfoSet parsing. 467 * \param user_data void pointer for user data passed to the callback as 468 * first parameter. 469 * \return 0 on success. 470 */ 471 int transportDec_RegisterUniDrcConfigCallback(HANDLE_TRANSPORTDEC hTpDec, 472 const cbUniDrc_t cbUniDrc, 473 void *user_data, 474 UINT *pLoudnessInfoSetPosition); 475 476 /** 477 * \brief Fill internal input buffer with bitstream data from the external input 478 * buffer. The function only copies such data as long as the decoder-internal 479 * input buffer is not full. So it grabs whatever it can from pBuffer and 480 * returns information (bytesValid) so that at a subsequent call of 481 * %transportDec_FillData(), the right position in pBuffer can be determined to 482 * grab the next data. 483 * 484 * \param hTp Handle of transportDec. 485 * \param pBuffer Pointer to external input buffer. 486 * \param bufferSize Size of external input buffer. This argument is required 487 * because decoder-internally we need the information to calculate the offset to 488 * pBuffer, where the next available data is, which is then 489 * fed into the decoder-internal buffer (as much as 490 * possible). Our example framework implementation fills the 491 * buffer at pBuffer again, once it contains no available valid bytes anymore 492 * (meaning bytesValid equal 0). 493 * \param bytesValid Number of bitstream bytes in the external bitstream buffer 494 * that have not yet been copied into the decoder's internal bitstream buffer by 495 * calling this function. The value is updated according to 496 * the amount of newly copied bytes. 497 * \param layer The layer the bitstream belongs to. 498 * \return Error code. 499 */ 500 TRANSPORTDEC_ERROR transportDec_FillData(const HANDLE_TRANSPORTDEC hTp, 501 UCHAR *pBuffer, const UINT bufferSize, 502 UINT *pBytesValid, const INT layer); 503 504 /** 505 * \brief Get transportDec bitstream handle. 506 * \param hTp Pointer to a transport decoder handle. 507 * \return HANDLE_FDK_BITSTREAM bitstream handle. 508 */ 509 HANDLE_FDK_BITSTREAM transportDec_GetBitstream(const HANDLE_TRANSPORTDEC hTp, 510 const UINT layer); 511 512 /** 513 * \brief Get transport format. 514 * \param hTp Pointer to a transport decoder handle. 515 * \return The transport format. 516 */ 517 TRANSPORT_TYPE transportDec_GetFormat(const HANDLE_TRANSPORTDEC hTp); 518 519 /** 520 * \brief Get the current buffer fullness value. 521 * 522 * \param hTp Handle of a transport decoder. 523 * 524 * \return Buffer fullness 525 */ 526 INT transportDec_GetBufferFullness(const HANDLE_TRANSPORTDEC hTp); 527 528 /** 529 * \brief Close and deallocate transportDec. 530 * \param phTp Pointer to a previously allocated transport decoder handle. 531 * \return void 532 */ 533 void transportDec_Close(HANDLE_TRANSPORTDEC *phTp); 534 535 /** 536 * \brief Read one access unit from the transportDec medium. 537 * \param hTp Handle of transportDec. 538 * \param length On return, this value is overwritten with the actual access 539 * unit length in bits. Set to -1 if length is unknown. 540 * \return Error code. 541 */ 542 TRANSPORTDEC_ERROR transportDec_ReadAccessUnit(const HANDLE_TRANSPORTDEC hTp, 543 const UINT layer); 544 545 /** 546 * \brief Get AudioSpecificConfig. 547 * \param hTp Handle of transportDec. 548 * \param layer Transport layer. 549 * \param asc Pointer to AudioSpecificConfig. 550 * \return Error code. 551 */ 552 TRANSPORTDEC_ERROR transportDec_GetAsc(const HANDLE_TRANSPORTDEC hTp, 553 const UINT layer, 554 CSAudioSpecificConfig *asc); 555 556 /** 557 * \brief Get the remaining amount of bits of the current access unit. The 558 * result can be below zero, meaning that too many bits have been read. 559 * \param hTp Handle of transportDec. 560 * \return amount of remaining bits. 561 */ 562 INT transportDec_GetAuBitsRemaining(const HANDLE_TRANSPORTDEC hTp, 563 const UINT layer); 564 565 /** 566 * \brief Get the total amount of bits of the current access unit. 567 * \param hTp Handle of transportDec. 568 * \return amount of total bits. 569 */ 570 INT transportDec_GetAuBitsTotal(const HANDLE_TRANSPORTDEC hTp, 571 const UINT layer); 572 573 /** 574 * \brief This function is required to be called when the decoder has 575 * finished parsing one Access Unit for bitstream housekeeping. 576 * \param hTp Transport Handle. 577 * \return Error code. 578 */ 579 TRANSPORTDEC_ERROR transportDec_EndAccessUnit(const HANDLE_TRANSPORTDEC hTp); 580 581 /** 582 * \brief Obtain the amount of missing access units if applicable in case 583 * of a bit stream synchronization error. Each time 584 * transportDec_ReadAccessUnit() returns TRANSPORTDEC_SYNC_ERROR 585 * this function can be called to retrieve an estimate of the amount 586 * of missing access units. This works only in case of constant 587 * average bit rate (has to be known) and if the parameter 588 * TPDEC_PARAM_SET_BITRATE has been set accordingly. 589 * \param hTp Transport Handle. 590 * \param pNAccessUnits pointer to a memory location where the estimated lost 591 * frame count will be stored into. 592 * \return Error code. 593 */ 594 TRANSPORTDEC_ERROR transportDec_GetMissingAccessUnitCount( 595 INT *pNAccessUnits, HANDLE_TRANSPORTDEC hTp); 596 597 /** 598 * \brief Set a given setting. 599 * \param hTp Transport Handle. 600 * \param param Identifier of the parameter to be changed. 601 * \param value Value for the parameter to be changed. 602 * \return Error code. 603 */ 604 TRANSPORTDEC_ERROR transportDec_SetParam(const HANDLE_TRANSPORTDEC hTp, 605 const TPDEC_PARAM param, 606 const INT value); 607 608 /** 609 * \brief Get number of subframes (for LATM or ADTS) 610 * \param hTp Transport Handle. 611 * \return Number of ADTS/LATM subframes (return 1 for all other transport 612 * types). 613 */ 614 UINT transportDec_GetNrOfSubFrames(HANDLE_TRANSPORTDEC hTp); 615 616 /** 617 * \brief Get info structure of transport decoder library. 618 * \param info A pointer to an allocated LIB_INFO struct. 619 * \return Error code. 620 */ 621 TRANSPORTDEC_ERROR transportDec_GetLibInfo(LIB_INFO *info); 622 623 /* ADTS CRC support */ 624 625 /** 626 * \brief Set current bitstream position as start of a new data region. 627 * \param hTp Transport handle. 628 * \param mBits Size in bits of the data region. Set to 0 if it should not be 629 * of a fixed size. 630 * \return Data region ID, which should be used when calling 631 * transportDec_CrcEndReg(). 632 */ 633 int transportDec_CrcStartReg(const HANDLE_TRANSPORTDEC hTp, const INT mBits); 634 635 /** 636 * \brief Set end of data region. 637 * \param hTp Transport handle. 638 * \param reg Data region ID, opbtained from transportDec_CrcStartReg(). 639 * \return void 640 */ 641 void transportDec_CrcEndReg(const HANDLE_TRANSPORTDEC hTp, const INT reg); 642 643 /** 644 * \brief Calculate ADTS crc and check if it is correct. The ADTS checksum 645 * is held internally. 646 * \param hTp Transport handle. 647 * \return Return TRANSPORTDEC_OK if the CRC is ok, or error if CRC is not 648 * correct. 649 */ 650 TRANSPORTDEC_ERROR transportDec_CrcCheck(const HANDLE_TRANSPORTDEC hTp); 651 652 /** 653 * \brief Only check whether a given config seems to be valid without modifying 654 * internal states. 655 * 656 * \param conf UCHAR buffer of the binary coded config (SDC type 9). 657 * \param length The length in bytes of the conf buffer. 658 * 659 * \return Error code. 660 */ 661 TRANSPORTDEC_ERROR transportDec_DrmRawSdcAudioConfig_Check(UCHAR *conf, 662 const UINT length); 663 664 #endif /* #ifndef TPDEC_LIB_H */ 665
