1 2 /* ----------------------------------------------------------------------------------------------------------- 3 Software License for The Fraunhofer FDK AAC Codec Library for Android 4 5 Copyright 1995 - 2015 Fraunhofer-Gesellschaft zur Frderung der angewandten Forschung e.V. 6 All rights reserved. 7 8 1. INTRODUCTION 9 The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software that implements 10 the MPEG Advanced Audio Coding ("AAC") encoding and decoding scheme for digital audio. 11 This FDK AAC Codec software is intended to be used on a wide variety of Android devices. 12 13 AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient general perceptual 14 audio codecs. AAC-ELD is considered the best-performing full-bandwidth communications codec by 15 independent studies and is widely deployed. AAC has been standardized by ISO and IEC as part 16 of the MPEG specifications. 17 18 Patent licenses for necessary patent claims for the FDK AAC Codec (including those of Fraunhofer) 19 may be obtained through Via Licensing (www.vialicensing.com) or through the respective patent owners 20 individually for the purpose of encoding or decoding bit streams in products that are compliant with 21 the ISO/IEC MPEG audio standards. Please note that most manufacturers of Android devices already license 22 these patent claims through Via Licensing or directly from the patent owners, and therefore FDK AAC Codec 23 software may already be covered under those patent licenses when it is used for those licensed purposes only. 24 25 Commercially-licensed AAC software libraries, including floating-point versions with enhanced sound quality, 26 are also available from Fraunhofer. Users are encouraged to check the Fraunhofer website for additional 27 applications information and documentation. 28 29 2. COPYRIGHT LICENSE 30 31 Redistribution and use in source and binary forms, with or without modification, are permitted without 32 payment of copyright license fees provided that you satisfy the following conditions: 33 34 You must retain the complete text of this software license in redistributions of the FDK AAC Codec or 35 your modifications thereto in source code form. 36 37 You must retain the complete text of this software license in the documentation and/or other materials 38 provided with redistributions of the FDK AAC Codec or your modifications thereto in binary form. 39 You must make available free of charge copies of the complete source code of the FDK AAC Codec and your 40 modifications thereto to recipients of copies in binary form. 41 42 The name of Fraunhofer may not be used to endorse or promote products derived from this library without 43 prior written permission. 44 45 You may not charge copyright license fees for anyone to use, copy or distribute the FDK AAC Codec 46 software or your modifications thereto. 47 48 Your modified versions of the FDK AAC Codec must carry prominent notices stating that you changed the software 49 and 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 53 3. NO PATENT LICENSE 54 55 NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without limitation the patents of Fraunhofer, 56 ARE GRANTED BY THIS SOFTWARE LICENSE. Fraunhofer provides no warranty of patent non-infringement with 57 respect to this software. 58 59 You may use this FDK AAC Codec software or modifications thereto only for purposes that are authorized 60 by appropriate patent licenses. 61 62 4. DISCLAIMER 63 64 This 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 66 of merchantability and fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR 67 CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, or consequential damages, 68 including but not limited to procurement of substitute goods or services; loss of use, data, or profits, 69 or business interruption, however caused and on any theory of liability, whether in contract, strict 70 liability, or tort (including negligence), arising in any way out of the use of this software, even if 71 advised of the possibility of such damage. 72 73 5. CONTACT INFORMATION 74 75 Fraunhofer Institute for Integrated Circuits IIS 76 Attention: Audio and Multimedia Departments - FDK AAC LL 77 Am Wolfsmantel 33 78 91058 Erlangen, Germany 79 80 www.iis.fraunhofer.de/amm 81 amm-info (at) iis.fraunhofer.de 82 ----------------------------------------------------------------------------------------------------------- */ 83 84 /**************************** MPEG-4 HE-AAC Encoder ************************* 85 86 Initial author: M. Lohwasser 87 contents/description: FDK HE-AAC Encoder interface library functions 88 89 ****************************************************************************/ 90 91 #include "aacenc_lib.h" 92 #include "FDK_audio.h" 93 #include "aacenc.h" 94 95 #include "aacEnc_ram.h" 96 #include "FDK_core.h" /* FDK_tools versioning info */ 97 98 /* Encoder library info */ 99 #define AACENCODER_LIB_VL0 3 100 #define AACENCODER_LIB_VL1 4 101 #define AACENCODER_LIB_VL2 22 102 #define AACENCODER_LIB_TITLE "AAC Encoder" 103 #ifdef __ANDROID__ 104 #define AACENCODER_LIB_BUILD_DATE "" 105 #define AACENCODER_LIB_BUILD_TIME "" 106 #else 107 #define AACENCODER_LIB_BUILD_DATE __DATE__ 108 #define AACENCODER_LIB_BUILD_TIME __TIME__ 109 #endif 110 111 112 #include "sbr_encoder.h" 113 #include "../src/sbr_ram.h" 114 #include "channel_map.h" 115 116 #include "psy_const.h" 117 #include "bitenc.h" 118 119 #include "tpenc_lib.h" 120 121 #include "metadata_main.h" 122 123 #define SBL(fl) (fl/8) /*!< Short block length (hardcoded to 8 short blocks per long block) */ 124 #define BSLA(fl) (4*SBL(fl)+SBL(fl)/2) /*!< AAC block switching look-ahead */ 125 #define DELAY_AAC(fl) (fl+BSLA(fl)) /*!< MDCT + blockswitching */ 126 #define DELAY_AACELD(fl) ((fl)/2) /*!< ELD FB delay (no framing delay included) */ 127 128 #define INPUTBUFFER_SIZE (1537+100+2048) 129 130 #define DEFAULT_HEADER_PERIOD_REPETITION_RATE 10 /*!< Default header repetition rate used in transport library and for SBR header. */ 131 132 //////////////////////////////////////////////////////////////////////////////////// 133 /** 134 * Flags to characterize encoder modules to be supported in present instance. 135 */ 136 enum { 137 ENC_MODE_FLAG_AAC = 0x0001, 138 ENC_MODE_FLAG_SBR = 0x0002, 139 ENC_MODE_FLAG_PS = 0x0004, 140 ENC_MODE_FLAG_SAC = 0x0008, 141 ENC_MODE_FLAG_META = 0x0010 142 }; 143 144 //////////////////////////////////////////////////////////////////////////////////// 145 typedef struct { 146 AUDIO_OBJECT_TYPE userAOT; /*!< Audio Object Type. */ 147 UINT userSamplerate; /*!< Sampling frequency. */ 148 UINT nChannels; /*!< will be set via channelMode. */ 149 CHANNEL_MODE userChannelMode; 150 UINT userBitrate; 151 UINT userBitrateMode; 152 UINT userBandwidth; 153 UINT userAfterburner; 154 UINT userFramelength; 155 UINT userAncDataRate; 156 UINT userPeakBitrate; 157 158 UCHAR userTns; /*!< Use TNS coding. */ 159 UCHAR userPns; /*!< Use PNS coding. */ 160 UCHAR userIntensity; /*!< Use Intensity coding. */ 161 162 TRANSPORT_TYPE userTpType; /*!< Transport type */ 163 UCHAR userTpSignaling; /*!< Extension AOT signaling mode. */ 164 UCHAR userTpNsubFrames; /*!< Number of sub frames in a transport frame for LOAS/LATM or ADTS (default 1). */ 165 UCHAR userTpAmxv; /*!< AudioMuxVersion to be used for LATM (default 0). */ 166 UCHAR userTpProtection; 167 UCHAR userTpHeaderPeriod; /*!< Parameter used to configure LATM/LOAS SMC rate. Moreover this parameters is 168 used to configure repetition rate of PCE in raw_data_block. */ 169 170 UCHAR userErTools; /*!< Use VCB11, HCR and/or RVLC ER tool. */ 171 UINT userPceAdditions; /*!< Configure additional bits in PCE. */ 172 173 UCHAR userMetaDataMode; /*!< Meta data library configuration. */ 174 175 UCHAR userSbrEnabled; /*!< Enable SBR for ELD. */ 176 UINT userSbrRatio; /*!< SBR sampling rate ratio. Dual- or single-rate. */ 177 178 } USER_PARAM; 179 180 //////////////////////////////////////////////////////////////////////////////////// 181 182 /**************************************************************************** 183 Structure Definitions 184 ****************************************************************************/ 185 186 typedef struct AACENC_CONFIG *HANDLE_AACENC_CONFIG; 187 188 189 struct AACENCODER 190 { 191 USER_PARAM extParam; 192 CODER_CONFIG coderConfig; 193 194 /* AAC */ 195 AACENC_CONFIG aacConfig; 196 HANDLE_AAC_ENC hAacEnc; 197 198 /* SBR */ 199 HANDLE_SBR_ENCODER hEnvEnc; 200 201 /* Meta Data */ 202 HANDLE_FDK_METADATA_ENCODER hMetadataEnc; 203 INT metaDataAllowed; /* Signal whether chosen configuration allows metadata. Necessary for delay 204 compensation. Metadata mode is a separate parameter. */ 205 206 /* Transport */ 207 HANDLE_TRANSPORTENC hTpEnc; 208 209 /* Output */ 210 UCHAR *outBuffer; /* Internal bitstream buffer */ 211 INT outBufferInBytes; /* Size of internal bitstream buffer*/ 212 213 /* Input */ 214 INT_PCM *inputBuffer; /* Internal input buffer. Input source for AAC encoder */ 215 INT inputBufferOffset; /* Where to write new input samples. */ 216 217 INT nSamplesToRead; /* number of input samples neeeded for encoding one frame */ 218 INT nSamplesRead; /* number of input samples already in input buffer */ 219 INT nZerosAppended; /* appended zeros at end of file*/ 220 INT nDelay; /* encoder delay */ 221 222 AACENC_EXT_PAYLOAD extPayload [MAX_TOTAL_EXT_PAYLOADS]; 223 /* Extension payload */ 224 UCHAR extPayloadData [(1)][(8)][MAX_PAYLOAD_SIZE]; 225 UINT extPayloadSize [(1)][(8)]; /* payload sizes in bits */ 226 227 ULONG InitFlags; /* internal status to treggier re-initialization */ 228 229 230 /* Memory allocation info. */ 231 INT nMaxAacElements; 232 INT nMaxAacChannels; 233 INT nMaxSbrElements; 234 INT nMaxSbrChannels; 235 UINT nMaxSubFrames; 236 237 UINT encoder_modis; 238 239 /* Capability flags */ 240 UINT CAPF_tpEnc; 241 242 } ; 243 244 typedef struct 245 { 246 ULONG samplingRate; /*!< Encoder output sampling rate. */ 247 ULONG bitrateRange; /*!< Lower bitrate range for config entry. */ 248 249 UCHAR lowDelaySbr; /*!< 0: ELD sbr off, 250 1: ELD sbr on */ 251 252 UCHAR downsampledSbr; /*!< 0: ELD with dualrate sbr, 253 1: ELD with downsampled sbr */ 254 255 } ELD_SBR_CONFIGURATOR; 256 257 /** 258 * \brief This table defines ELD/SBR default configurations. 259 */ 260 static const ELD_SBR_CONFIGURATOR eldSbrAutoConfigTab[] = 261 { 262 { 48000, 0, 1, 0 }, 263 { 48000, 64001, 0, 0 }, 264 265 { 44100, 0, 1, 0 }, 266 { 44100, 64001, 0, 0 }, 267 268 { 32000, 0, 1, 0 }, 269 { 32000, 28000, 1, 1 }, 270 { 32000, 56000, 0, 0 }, 271 272 { 24000, 0, 1, 1 }, 273 { 24000, 40000, 0, 0 }, 274 275 { 16000, 0, 1, 1 }, 276 { 16000, 28000, 0, 0 } 277 278 }; 279 280 /* 281 * \brief Configure SBR for ELD configuration. 282 * 283 * This function finds default SBR configuration for ELD based on sampling rate and channel bitrate. 284 * Outputparameters are SBR on/off, and SBR ratio. 285 * 286 * \param samplingRate Audio signal sampling rate. 287 * \param channelMode Channel configuration to be used. 288 * \param totalBitrate Overall bitrate. 289 * \param eldSbr Pointer to eldSbr parameter, filled on return. 290 * \param eldSbrRatio Pointer to eldSbrRatio parameter, filled on return. 291 * 292 * \return - AACENC_OK, all fine. 293 * - AACENC_INVALID_CONFIG, on failure. 294 */ 295 static AACENC_ERROR eldSbrConfigurator( 296 const ULONG samplingRate, 297 const CHANNEL_MODE channelMode, 298 const ULONG totalBitrate, 299 UINT * const eldSbr, 300 UINT * const eldSbrRatio 301 ) 302 { 303 AACENC_ERROR err = AACENC_OK; 304 int i, cfgIdx = -1; 305 const ULONG channelBitrate = totalBitrate / FDKaacEnc_GetChannelModeConfiguration(channelMode)->nChannelsEff; 306 307 for (i=0; i<(int)(sizeof(eldSbrAutoConfigTab)/sizeof(ELD_SBR_CONFIGURATOR)); i++) { 308 if ( (samplingRate <= eldSbrAutoConfigTab[i].samplingRate) 309 && (channelBitrate >= eldSbrAutoConfigTab[i].bitrateRange) ) 310 { 311 cfgIdx = i; 312 } 313 } 314 315 if (cfgIdx != -1) { 316 *eldSbr = (eldSbrAutoConfigTab[cfgIdx].lowDelaySbr==0) ? 0 : 1; 317 *eldSbrRatio = (eldSbrAutoConfigTab[cfgIdx].downsampledSbr==0) ? 2 : 1; 318 } 319 else { 320 err = AACENC_INVALID_CONFIG; /* no default configuration for eld-sbr available. */ 321 } 322 323 return err; 324 } 325 326 static inline INT isSbrActive(const HANDLE_AACENC_CONFIG hAacConfig) 327 { 328 INT sbrUsed = 0; 329 330 if ( (hAacConfig->audioObjectType==AOT_SBR) || (hAacConfig->audioObjectType==AOT_PS) ) 331 { 332 sbrUsed = 1; 333 } 334 if (hAacConfig->audioObjectType == AOT_ER_AAC_ELD && (hAacConfig->syntaxFlags & AC_SBR_PRESENT)) 335 { 336 sbrUsed = 1; 337 } 338 339 return ( sbrUsed ); 340 } 341 342 static inline INT isPsActive(const AUDIO_OBJECT_TYPE audioObjectType) 343 { 344 INT psUsed = 0; 345 346 if ( (audioObjectType==AOT_PS) ) 347 { 348 psUsed = 1; 349 } 350 351 return ( psUsed ); 352 } 353 354 static SBR_PS_SIGNALING getSbrSignalingMode( 355 const AUDIO_OBJECT_TYPE audioObjectType, 356 const TRANSPORT_TYPE transportType, 357 const UCHAR transportSignaling, 358 const UINT sbrRatio 359 ) 360 361 { 362 SBR_PS_SIGNALING sbrSignaling; 363 364 if (transportType==TT_UNKNOWN || sbrRatio==0) { 365 sbrSignaling = SIG_UNKNOWN; /* Needed parameters have not been set */ 366 return sbrSignaling; 367 } else { 368 sbrSignaling = SIG_IMPLICIT; /* default: implicit signaling */ 369 } 370 371 if ( (audioObjectType==AOT_AAC_LC) || (audioObjectType==AOT_SBR) || (audioObjectType==AOT_PS) ) { 372 switch (transportType) { 373 case TT_MP4_ADIF: 374 case TT_MP4_ADTS: 375 sbrSignaling = SIG_IMPLICIT; /* For MPEG-2 transport types, only implicit signaling is possible */ 376 break; 377 378 case TT_MP4_RAW: 379 case TT_MP4_LATM_MCP1: 380 case TT_MP4_LATM_MCP0: 381 case TT_MP4_LOAS: 382 default: 383 if ( transportSignaling==0xFF ) { 384 /* Defaults */ 385 if ( sbrRatio==1 ) { 386 sbrSignaling = SIG_EXPLICIT_HIERARCHICAL; /* For downsampled SBR, explicit signaling is mandatory */ 387 } else { 388 sbrSignaling = SIG_IMPLICIT; /* For dual-rate SBR, implicit signaling is default */ 389 } 390 } else { 391 /* User set parameters */ 392 /* Attention: Backward compatible explicit signaling does only work with AMV1 for LATM/LOAS */ 393 sbrSignaling = (SBR_PS_SIGNALING)transportSignaling; 394 } 395 break; 396 } 397 } 398 399 return sbrSignaling; 400 } 401 402 /**************************************************************************** 403 Allocate Encoder 404 ****************************************************************************/ 405 406 H_ALLOC_MEM (_AacEncoder, AACENCODER) 407 C_ALLOC_MEM (_AacEncoder, AACENCODER, 1) 408 409 410 411 412 /* 413 * Map Encoder specific config structures to CODER_CONFIG. 414 */ 415 static void FDKaacEnc_MapConfig( 416 CODER_CONFIG *const cc, 417 const USER_PARAM *const extCfg, 418 const SBR_PS_SIGNALING sbrSignaling, 419 const HANDLE_AACENC_CONFIG hAacConfig 420 ) 421 { 422 AUDIO_OBJECT_TYPE transport_AOT = AOT_NULL_OBJECT; 423 FDKmemclear(cc, sizeof(CODER_CONFIG)); 424 425 cc->flags = 0; 426 427 transport_AOT = hAacConfig->audioObjectType; 428 429 if (hAacConfig->audioObjectType == AOT_ER_AAC_ELD) { 430 cc->flags |= (hAacConfig->syntaxFlags & AC_SBR_PRESENT) ? CC_SBR : 0; 431 } 432 433 /* transport type is usually AAC-LC. */ 434 if ( (transport_AOT == AOT_SBR) || (transport_AOT == AOT_PS) ) { 435 cc->aot = AOT_AAC_LC; 436 } 437 else { 438 cc->aot = transport_AOT; 439 } 440 441 /* Configure extension aot. */ 442 if (sbrSignaling==SIG_IMPLICIT) { 443 cc->extAOT = AOT_NULL_OBJECT; /* implicit */ 444 } 445 else { 446 if ( (sbrSignaling==SIG_EXPLICIT_BW_COMPATIBLE) && ( (transport_AOT==AOT_SBR) || (transport_AOT==AOT_PS) ) ) { 447 cc->extAOT = AOT_SBR; /* explicit backward compatible */ 448 } 449 else { 450 cc->extAOT = transport_AOT; /* explicit hierarchical */ 451 } 452 } 453 454 if ( (transport_AOT==AOT_SBR) || (transport_AOT==AOT_PS) ) { 455 cc->sbrPresent=1; 456 if (transport_AOT==AOT_PS) { 457 cc->psPresent=1; 458 } 459 } 460 cc->sbrSignaling = sbrSignaling; 461 462 cc->extSamplingRate = extCfg->userSamplerate; 463 cc->bitRate = hAacConfig->bitRate; 464 cc->noChannels = hAacConfig->nChannels; 465 cc->flags |= CC_IS_BASELAYER; 466 cc->channelMode = hAacConfig->channelMode; 467 468 cc->nSubFrames = (hAacConfig->nSubFrames > 1 && extCfg->userTpNsubFrames == 1) 469 ? hAacConfig->nSubFrames 470 : extCfg->userTpNsubFrames; 471 472 cc->flags |= (extCfg->userTpProtection) ? CC_PROTECTION : 0; 473 474 if (extCfg->userTpHeaderPeriod!=0xFF) { 475 cc->headerPeriod = extCfg->userTpHeaderPeriod; 476 } 477 else { /* auto-mode */ 478 switch (extCfg->userTpType) { 479 case TT_MP4_ADTS: 480 case TT_MP4_LOAS: 481 case TT_MP4_LATM_MCP1: 482 cc->headerPeriod = DEFAULT_HEADER_PERIOD_REPETITION_RATE; 483 break; 484 default: 485 cc->headerPeriod = 0; 486 } 487 } 488 489 cc->samplesPerFrame = hAacConfig->framelength; 490 cc->samplingRate = hAacConfig->sampleRate; 491 492 /* Mpeg-4 signaling for transport library. */ 493 cc->flags |= CC_MPEG_ID; 494 495 /* ER-tools signaling. */ 496 cc->flags |= (hAacConfig->syntaxFlags & AC_ER_VCB11) ? CC_VCB11 : 0; 497 cc->flags |= (hAacConfig->syntaxFlags & AC_ER_HCR) ? CC_HCR : 0; 498 cc->flags |= (hAacConfig->syntaxFlags & AC_ER_RVLC) ? CC_RVLC : 0; 499 500 /* Matrix mixdown coefficient configuration. */ 501 if ( (extCfg->userPceAdditions&0x1) && (hAacConfig->epConfig==-1) 502 && ((cc->channelMode==MODE_1_2_2)||(cc->channelMode==MODE_1_2_2_1)) ) 503 { 504 cc->matrixMixdownA = ((extCfg->userPceAdditions>>1)&0x3)+1; 505 cc->flags |= (extCfg->userPceAdditions>>3)&0x1 ? CC_PSEUDO_SURROUND : 0; 506 } 507 else { 508 cc->matrixMixdownA = 0; 509 } 510 } 511 512 /* 513 * Examine buffer descriptor regarding choosen identifier. 514 * 515 * \param pBufDesc Pointer to buffer descriptor 516 * \param identifier Buffer identifier to look for. 517 518 * \return - Buffer descriptor index. 519 * -1, if there is no entry available. 520 */ 521 static INT getBufDescIdx( 522 const AACENC_BufDesc *pBufDesc, 523 const AACENC_BufferIdentifier identifier 524 ) 525 { 526 INT i, idx = -1; 527 528 for (i=0; i<pBufDesc->numBufs; i++) { 529 if ( (AACENC_BufferIdentifier)pBufDesc->bufferIdentifiers[i] == identifier ) { 530 idx = i; 531 break; 532 } 533 } 534 return idx; 535 } 536 537 538 /**************************************************************************** 539 Function Declarations 540 ****************************************************************************/ 541 542 AAC_ENCODER_ERROR aacEncDefaultConfig(HANDLE_AACENC_CONFIG hAacConfig, 543 USER_PARAM *config) 544 { 545 /* make reasonable default settings */ 546 FDKaacEnc_AacInitDefaultConfig (hAacConfig); 547 548 /* clear configuration structure and copy default settings */ 549 FDKmemclear(config, sizeof(USER_PARAM)); 550 551 /* copy encoder configuration settings */ 552 config->nChannels = hAacConfig->nChannels; 553 config->userAOT = hAacConfig->audioObjectType = AOT_AAC_LC; 554 config->userSamplerate = hAacConfig->sampleRate; 555 config->userChannelMode = hAacConfig->channelMode; 556 config->userBitrate = hAacConfig->bitRate; 557 config->userBitrateMode = hAacConfig->bitrateMode; 558 config->userPeakBitrate = (UINT)-1; 559 config->userBandwidth = hAacConfig->bandWidth; 560 config->userTns = hAacConfig->useTns; 561 config->userPns = hAacConfig->usePns; 562 config->userIntensity = hAacConfig->useIS; 563 config->userAfterburner = hAacConfig->useRequant; 564 config->userFramelength = (UINT)-1; 565 566 if (hAacConfig->syntaxFlags & AC_ER_VCB11) { 567 config->userErTools |= 0x01; 568 } 569 if (hAacConfig->syntaxFlags & AC_ER_HCR) { 570 config->userErTools |= 0x02; 571 } 572 573 /* initialize transport parameters */ 574 config->userTpType = TT_UNKNOWN; 575 config->userTpAmxv = 0; 576 config->userTpSignaling = 0xFF; /* choose signaling automatically */ 577 config->userTpNsubFrames = 1; 578 config->userTpProtection = 0; /* not crc protected*/ 579 config->userTpHeaderPeriod = 0xFF; /* header period in auto mode */ 580 config->userPceAdditions = 0; /* no matrix mixdown coefficient */ 581 config->userMetaDataMode = 0; /* do not embed any meta data info */ 582 583 config->userAncDataRate = 0; 584 585 /* SBR rate is set to 0 here, which means it should be set automatically 586 in FDKaacEnc_AdjustEncSettings() if the user did not set a rate 587 expilicitely. */ 588 config->userSbrRatio = 0; 589 590 /* SBR enable set to -1 means to inquire ELD audio configurator for reasonable configuration. */ 591 config->userSbrEnabled = -1; 592 593 return AAC_ENC_OK; 594 } 595 596 static 597 void aacEncDistributeSbrBits(CHANNEL_MAPPING *channelMapping, SBR_ELEMENT_INFO *sbrElInfo, INT bitRate) 598 { 599 INT codebits = bitRate; 600 int el; 601 602 /* Copy Element info */ 603 for (el=0; el<channelMapping->nElements; el++) { 604 sbrElInfo[el].ChannelIndex[0] = channelMapping->elInfo[el].ChannelIndex[0]; 605 sbrElInfo[el].ChannelIndex[1] = channelMapping->elInfo[el].ChannelIndex[1]; 606 sbrElInfo[el].elType = channelMapping->elInfo[el].elType; 607 sbrElInfo[el].bitRate = (INT)(fMultNorm(channelMapping->elInfo[el].relativeBits, (FIXP_DBL)bitRate)); 608 sbrElInfo[el].instanceTag = channelMapping->elInfo[el].instanceTag; 609 sbrElInfo[el].nChannelsInEl = channelMapping->elInfo[el].nChannelsInEl; 610 611 codebits -= sbrElInfo[el].bitRate; 612 } 613 sbrElInfo[0].bitRate += codebits; 614 } 615 616 617 static 618 INT aacEncoder_LimitBitrate( 619 const HANDLE_TRANSPORTENC hTpEnc, 620 const INT samplingRate, 621 const INT frameLength, 622 const INT nChannels, 623 const CHANNEL_MODE channelMode, 624 INT bitRate, 625 const INT nSubFrames, 626 const INT sbrActive, 627 const INT sbrDownSampleRate, 628 const AUDIO_OBJECT_TYPE aot 629 ) 630 { 631 INT coreSamplingRate; 632 CHANNEL_MAPPING cm; 633 634 FDKaacEnc_InitChannelMapping(channelMode, CH_ORDER_MPEG, &cm); 635 636 if (sbrActive) { 637 coreSamplingRate = samplingRate >> (sbrEncoder_IsSingleRatePossible(aot) ? (sbrDownSampleRate-1):1); 638 } else { 639 coreSamplingRate = samplingRate; 640 } 641 642 /* Consider bandwidth channel bit rate limit (see bandwidth.cpp: GetBandwidthEntry()) */ 643 if (aot == AOT_ER_AAC_LD || aot == AOT_ER_AAC_ELD) { 644 bitRate = FDKmin(360000*nChannels, bitRate); 645 bitRate = FDKmax(8000*nChannels, bitRate); 646 } 647 648 if (aot == AOT_AAC_LC || aot == AOT_SBR || aot == AOT_PS) { 649 bitRate = FDKmin(576000*nChannels, bitRate); 650 /*bitRate = FDKmax(0*nChannels, bitRate);*/ 651 } 652 653 654 /* Limit bit rate in respect to the core coder */ 655 bitRate = FDKaacEnc_LimitBitrate( 656 hTpEnc, 657 coreSamplingRate, 658 frameLength, 659 nChannels, 660 cm.nChannelsEff, 661 bitRate, 662 -1, 663 NULL, 664 -1, 665 nSubFrames 666 ); 667 668 /* Limit bit rate in respect to available SBR modes if active */ 669 if (sbrActive) 670 { 671 int numIterations = 0; 672 INT initialBitrate, adjustedBitrate; 673 initialBitrate = adjustedBitrate = bitRate; 674 675 /* Find total bitrate which provides valid configuration for each SBR element. */ 676 do { 677 int e; 678 SBR_ELEMENT_INFO sbrElInfo[(8)]; 679 FDK_ASSERT(cm.nElements <= (8)); 680 681 initialBitrate = adjustedBitrate; 682 683 /* Get bit rate for each SBR element */ 684 aacEncDistributeSbrBits(&cm, sbrElInfo, initialBitrate); 685 686 for (e=0; e<cm.nElements; e++) 687 { 688 INT sbrElementBitRateIn, sbrBitRateOut; 689 690 if (cm.elInfo[e].elType != ID_SCE && cm.elInfo[e].elType != ID_CPE) { 691 continue; 692 } 693 sbrElementBitRateIn = sbrElInfo[e].bitRate; 694 sbrBitRateOut = sbrEncoder_LimitBitRate(sbrElementBitRateIn , cm.elInfo[e].nChannelsInEl, coreSamplingRate, aot); 695 if (sbrBitRateOut == 0) { 696 return 0; 697 } 698 699 /* If bitrates don't match, distribution and limiting needs to be determined again. 700 Abort element loop and restart with adapted bitrate. */ 701 if (sbrElementBitRateIn != sbrBitRateOut) { 702 703 if (sbrElementBitRateIn < sbrBitRateOut) { 704 adjustedBitrate = fMax(initialBitrate, (INT)fDivNorm((FIXP_DBL)(sbrBitRateOut+8), cm.elInfo[e].relativeBits)); 705 break; 706 } 707 708 if (sbrElementBitRateIn > sbrBitRateOut) { 709 adjustedBitrate = fMin(initialBitrate, (INT)fDivNorm((FIXP_DBL)(sbrBitRateOut-8), cm.elInfo[e].relativeBits)); 710 break; 711 } 712 713 } /* sbrElementBitRateIn != sbrBitRateOut */ 714 715 } /* elements */ 716 717 numIterations++; /* restrict iteration to worst case of num elements */ 718 719 } while ( (initialBitrate!=adjustedBitrate) && (numIterations<=cm.nElements) ); 720 721 /* Unequal bitrates mean that no reasonable bitrate configuration found. */ 722 bitRate = (initialBitrate==adjustedBitrate) ? adjustedBitrate : 0; 723 } 724 725 FDK_ASSERT(bitRate > 0); 726 727 return bitRate; 728 } 729 730 /* 731 * \brief Consistency check of given USER_PARAM struct and 732 * copy back configuration from public struct into internal 733 * encoder configuration struct. 734 * 735 * \hAacEncoder Internal encoder config which is to be updated 736 * \param config User provided config (public struct) 737 * \return returns always AAC_ENC_OK 738 */ 739 static 740 AACENC_ERROR FDKaacEnc_AdjustEncSettings(HANDLE_AACENCODER hAacEncoder, 741 USER_PARAM *config) 742 { 743 AACENC_ERROR err = AACENC_OK; 744 745 /* Get struct pointers. */ 746 HANDLE_AACENC_CONFIG hAacConfig = &hAacEncoder->aacConfig; 747 748 hAacConfig->nChannels = config->nChannels; 749 750 /* Encoder settings update. */ 751 hAacConfig->sampleRate = config->userSamplerate; 752 hAacConfig->useTns = config->userTns; 753 hAacConfig->usePns = config->userPns; 754 hAacConfig->useIS = config->userIntensity; 755 hAacConfig->bitRate = config->userBitrate; 756 hAacConfig->channelMode = config->userChannelMode; 757 hAacConfig->bitrateMode = config->userBitrateMode; 758 hAacConfig->bandWidth = config->userBandwidth; 759 hAacConfig->useRequant = config->userAfterburner; 760 761 hAacConfig->audioObjectType = config->userAOT; 762 hAacConfig->anc_Rate = config->userAncDataRate; 763 hAacConfig->syntaxFlags = 0; 764 hAacConfig->epConfig = -1; 765 766 if (config->userTpType==TT_MP4_LATM_MCP1 || config->userTpType==TT_MP4_LATM_MCP0 || config->userTpType==TT_MP4_LOAS) { 767 hAacConfig->audioMuxVersion = config->userTpAmxv; 768 } 769 else { 770 hAacConfig->audioMuxVersion = -1; 771 } 772 773 /* Adapt internal AOT when necessary. */ 774 switch ( hAacConfig->audioObjectType ) { 775 case AOT_AAC_LC: 776 case AOT_SBR: 777 case AOT_PS: 778 config->userTpType = (config->userTpType!=TT_UNKNOWN) ? config->userTpType : TT_MP4_ADTS; 779 hAacConfig->framelength = (config->userFramelength!=(UINT)-1) ? config->userFramelength : 1024; 780 if (hAacConfig->framelength != 1024) { 781 return AACENC_INVALID_CONFIG; 782 } 783 break; 784 case AOT_ER_AAC_LD: 785 hAacConfig->epConfig = 0; 786 hAacConfig->syntaxFlags |= AC_ER|AC_LD; 787 hAacConfig->syntaxFlags |= ((config->userErTools & 0x1) ? AC_ER_VCB11 : 0); 788 hAacConfig->syntaxFlags |= ((config->userErTools & 0x2) ? AC_ER_HCR : 0); 789 hAacConfig->syntaxFlags |= ((config->userErTools & 0x4) ? AC_ER_RVLC : 0); 790 config->userTpType = (config->userTpType!=TT_UNKNOWN) ? config->userTpType : TT_MP4_LOAS; 791 hAacConfig->framelength = (config->userFramelength!=(UINT)-1) ? config->userFramelength : 512; 792 if (hAacConfig->framelength != 512 && hAacConfig->framelength != 480) { 793 return AACENC_INVALID_CONFIG; 794 } 795 break; 796 case AOT_ER_AAC_ELD: 797 hAacConfig->epConfig = 0; 798 hAacConfig->syntaxFlags |= AC_ER|AC_ELD; 799 hAacConfig->syntaxFlags |= ((config->userErTools & 0x1) ? AC_ER_VCB11 : 0); 800 hAacConfig->syntaxFlags |= ((config->userErTools & 0x2) ? AC_ER_HCR : 0); 801 hAacConfig->syntaxFlags |= ((config->userErTools & 0x4) ? AC_ER_RVLC : 0); 802 hAacConfig->syntaxFlags |= ((config->userSbrEnabled==1) ? AC_SBR_PRESENT : 0); 803 config->userTpType = (config->userTpType!=TT_UNKNOWN) ? config->userTpType : TT_MP4_LOAS; 804 hAacConfig->framelength = (config->userFramelength!=(UINT)-1) ? config->userFramelength : 512; 805 if (hAacConfig->framelength != 512 && hAacConfig->framelength != 480) { 806 return AACENC_INVALID_CONFIG; 807 } 808 break; 809 default: 810 break; 811 } 812 813 switch ( hAacConfig->audioObjectType ) { 814 case AOT_ER_AAC_LD: 815 case AOT_ER_AAC_ELD: 816 if (config->userBitrateMode==0) { 817 /* bitreservoir = (maxBitRes-minBitRes)/(maxBitRate-minBitrate)*(bitRate-minBitrate)+minBitRes; */ 818 if ( isLowDelay(hAacConfig->audioObjectType) ) { 819 INT bitreservoir; 820 INT brPerChannel = hAacConfig->bitRate/hAacConfig->nChannels; 821 brPerChannel = fMin(BITRATE_MAX_LD, fMax(BITRATE_MIN_LD, brPerChannel)); 822 FIXP_DBL slope = fDivNorm((brPerChannel-BITRATE_MIN_LD), BITRATE_MAX_LD-BITRATE_MIN_LD); /* calc slope for interpolation */ 823 bitreservoir = fMultI(slope, (INT)(BITRES_MAX_LD-BITRES_MIN_LD)) + BITRES_MIN_LD; /* interpolate */ 824 hAacConfig->bitreservoir = bitreservoir & ~7; /* align to bytes */ 825 } 826 } 827 if (hAacConfig->bitrateMode!=0) { 828 return AACENC_INVALID_CONFIG; 829 } 830 break; 831 default: 832 break; 833 } 834 835 hAacConfig->bitRate = config->userBitrate; 836 837 /* get bitrate in VBR configuration */ 838 if ( (hAacConfig->bitrateMode>=1) && (hAacConfig->bitrateMode<=5) ) { 839 /* In VBR mode; SBR-modul depends on bitrate, core encoder on bitrateMode. */ 840 hAacConfig->bitRate = FDKaacEnc_GetVBRBitrate(hAacConfig->bitrateMode, hAacConfig->channelMode); 841 } 842 843 844 845 /* Set default bitrate if no external bitrate declared. */ 846 if ( (hAacConfig->bitrateMode==0) && (config->userBitrate==(UINT)-1) ) { 847 INT bitrate = FDKaacEnc_GetChannelModeConfiguration(hAacConfig->channelMode)->nChannelsEff * hAacConfig->sampleRate; 848 849 if ( isPsActive(hAacConfig->audioObjectType) ) { 850 hAacConfig->bitRate = (bitrate>>1); /* 0.5 bit per sample */ 851 } 852 else if ( isSbrActive(hAacConfig) ) 853 { 854 if ( (config->userSbrRatio==2) || ((config->userSbrRatio==0)&&(hAacConfig->audioObjectType!=AOT_ER_AAC_ELD)) ) { 855 hAacConfig->bitRate = (bitrate + (bitrate>>2))>>1; /* 0.625 bits per sample */ 856 } 857 if ( (config->userSbrRatio==1) || ((config->userSbrRatio==0)&&(hAacConfig->audioObjectType==AOT_ER_AAC_ELD)) ) { 858 hAacConfig->bitRate = (bitrate + (bitrate>>3)); /* 1.125 bits per sample */ 859 } 860 } else 861 { 862 hAacConfig->bitRate = bitrate + (bitrate>>1); /* 1.5 bits per sample */ 863 } 864 } 865 866 if ((hAacConfig->bitrateMode >= 0) && (hAacConfig->bitrateMode <= 5)) { 867 if ((INT)config->userPeakBitrate != -1) { 868 hAacConfig->maxBitsPerFrame = (FDKaacEnc_CalcBitsPerFrame(fMax(hAacConfig->bitRate, (INT)config->userPeakBitrate), hAacConfig->framelength, hAacConfig->sampleRate) + 7)&~7; 869 } 870 else { 871 hAacConfig->maxBitsPerFrame = -1; 872 } 873 if (hAacConfig->audioMuxVersion==2) { 874 hAacConfig->minBitsPerFrame = fMin(32*8, FDKaacEnc_CalcBitsPerFrame(hAacConfig->bitRate, hAacConfig->framelength, hAacConfig->sampleRate))&~7; 875 } 876 } 877 878 /* Initialize SBR parameters */ 879 if ( (hAacConfig->audioObjectType==AOT_ER_AAC_ELD) 880 && (config->userSbrEnabled == (UCHAR)-1) && (config->userSbrRatio==0) ) 881 { 882 UINT eldSbr = 0; 883 UINT eldSbrRatio = 0; 884 885 if ( AACENC_OK!=(err=eldSbrConfigurator( 886 hAacConfig->sampleRate, 887 hAacConfig->channelMode, 888 hAacConfig->bitRate, 889 &eldSbr, 890 &eldSbrRatio)) ) 891 { 892 return err; 893 } 894 895 hAacConfig->syntaxFlags |= ((eldSbr) ? AC_SBR_PRESENT : 0); 896 hAacConfig->sbrRatio = eldSbrRatio; 897 } 898 else 899 if ( (config->userSbrRatio==0) && (isSbrActive(hAacConfig)) ) { 900 /* Automatic SBR ratio configuration 901 * - downsampled SBR for ELD 902 * - otherwise always dualrate SBR 903 */ 904 hAacConfig->sbrRatio = (hAacConfig->audioObjectType==AOT_ER_AAC_ELD) ? 1 : 2; 905 } 906 else { 907 /* SBR ratio has been set by the user, so use it. */ 908 hAacConfig->sbrRatio = isSbrActive(hAacConfig) ? config->userSbrRatio : 0; 909 } 910 911 { 912 UCHAR tpSignaling=getSbrSignalingMode(hAacConfig->audioObjectType, config->userTpType, config->userTpSignaling, hAacConfig->sbrRatio); 913 914 if ( (hAacConfig->audioObjectType==AOT_AAC_LC || hAacConfig->audioObjectType==AOT_SBR || hAacConfig->audioObjectType==AOT_PS) && 915 (config->userTpType==TT_MP4_LATM_MCP1 || config->userTpType==TT_MP4_LATM_MCP0 || config->userTpType==TT_MP4_LOAS) && 916 (tpSignaling==1) && (config->userTpAmxv==0) ) { 917 /* For backward compatible explicit signaling, AMV1 has to be active */ 918 return AACENC_INVALID_CONFIG; 919 } 920 921 if ( (hAacConfig->audioObjectType==AOT_AAC_LC || hAacConfig->audioObjectType==AOT_SBR || hAacConfig->audioObjectType==AOT_PS) && 922 (tpSignaling==0) && (hAacConfig->sbrRatio==1)) { 923 /* Downsampled SBR has to be signaled explicitely (for transmission of SBR sampling fequency) */ 924 return AACENC_INVALID_CONFIG; 925 } 926 } 927 928 929 930 /* We need the frame length to call aacEncoder_LimitBitrate() */ 931 hAacConfig->bitRate = aacEncoder_LimitBitrate( 932 NULL, 933 hAacConfig->sampleRate, 934 hAacConfig->framelength, 935 hAacConfig->nChannels, 936 hAacConfig->channelMode, 937 hAacConfig->bitRate, 938 hAacConfig->nSubFrames, 939 isSbrActive(hAacConfig), 940 hAacConfig->sbrRatio, 941 hAacConfig->audioObjectType 942 ); 943 944 /* Configure PNS */ 945 if ( ((hAacConfig->bitrateMode>=1) && (hAacConfig->bitrateMode<=5)) /* VBR without PNS. */ 946 || (hAacConfig->useTns == 0) ) /* TNS required. */ 947 { 948 hAacConfig->usePns = 0; 949 } 950 951 if (hAacConfig->epConfig >= 0) { 952 hAacConfig->syntaxFlags |= AC_ER; 953 if (((INT)hAacConfig->channelMode < 1) || ((INT)hAacConfig->channelMode > 7)) { 954 return AACENC_INVALID_CONFIG; /* Cannel config 0 not supported. */ 955 } 956 } 957 958 if ( FDKaacEnc_DetermineEncoderMode(&hAacConfig->channelMode, hAacConfig->nChannels) != AAC_ENC_OK) { 959 return AACENC_INVALID_CONFIG; /* nChannels doesn't match chMode, this is just a check-up */ 960 } 961 962 if ( (hAacConfig->nChannels > hAacEncoder->nMaxAacChannels) 963 || ( (FDKaacEnc_GetChannelModeConfiguration(hAacConfig->channelMode)->nChannelsEff > hAacEncoder->nMaxSbrChannels) && 964 isSbrActive(hAacConfig) ) 965 ) 966 { 967 return AACENC_INVALID_CONFIG; /* not enough channels allocated */ 968 } 969 970 /* Meta data restriction. */ 971 switch (hAacConfig->audioObjectType) 972 { 973 /* Allow metadata support */ 974 case AOT_AAC_LC: 975 case AOT_SBR: 976 case AOT_PS: 977 hAacEncoder->metaDataAllowed = 1; 978 if (((INT)hAacConfig->channelMode < 1) || ((INT)hAacConfig->channelMode > 7)) { 979 config->userMetaDataMode = 0; 980 } 981 break; 982 /* Prohibit metadata support */ 983 default: 984 hAacEncoder->metaDataAllowed = 0; 985 } 986 987 return err; 988 } 989 990 static 991 INT aacenc_SbrCallback( 992 void * self, 993 HANDLE_FDK_BITSTREAM hBs, 994 const INT sampleRateIn, 995 const INT sampleRateOut, 996 const INT samplesPerFrame, 997 const AUDIO_OBJECT_TYPE coreCodec, 998 const MP4_ELEMENT_ID elementID, 999 const INT elementIndex 1000 ) 1001 { 1002 HANDLE_AACENCODER hAacEncoder = (HANDLE_AACENCODER)self; 1003 1004 sbrEncoder_GetHeader(hAacEncoder->hEnvEnc, hBs, elementIndex, 0); 1005 1006 return 0; 1007 } 1008 1009 static AACENC_ERROR aacEncInit(HANDLE_AACENCODER hAacEncoder, 1010 ULONG InitFlags, 1011 USER_PARAM *config) 1012 { 1013 AACENC_ERROR err = AACENC_OK; 1014 1015 INT aacBufferOffset = 0; 1016 HANDLE_SBR_ENCODER *hSbrEncoder = &hAacEncoder->hEnvEnc; 1017 HANDLE_AACENC_CONFIG hAacConfig = &hAacEncoder->aacConfig; 1018 1019 hAacEncoder->nZerosAppended = 0; /* count appended zeros */ 1020 1021 INT frameLength = hAacConfig->framelength; 1022 1023 if ( (InitFlags & AACENC_INIT_CONFIG) ) 1024 { 1025 CHANNEL_MODE prevChMode = hAacConfig->channelMode; 1026 1027 /* Verify settings and update: config -> heAacEncoder */ 1028 if ( (err=FDKaacEnc_AdjustEncSettings(hAacEncoder, config)) != AACENC_OK ) { 1029 return err; 1030 } 1031 frameLength = hAacConfig->framelength; /* adapt temporal framelength */ 1032 1033 /* Seamless channel reconfiguration in sbr not fully implemented */ 1034 if ( (prevChMode!=hAacConfig->channelMode) && isSbrActive(hAacConfig) ) { 1035 InitFlags |= AACENC_INIT_STATES; 1036 } 1037 } 1038 1039 /* Clear input buffer */ 1040 if ( InitFlags == AACENC_INIT_ALL ) { 1041 FDKmemclear(hAacEncoder->inputBuffer, sizeof(INT_PCM)*hAacEncoder->nMaxAacChannels*INPUTBUFFER_SIZE); 1042 } 1043 1044 if ( (InitFlags & AACENC_INIT_CONFIG) ) 1045 { 1046 aacBufferOffset = 0; 1047 if (hAacConfig->audioObjectType == AOT_ER_AAC_ELD) { 1048 hAacEncoder->nDelay = DELAY_AACELD(hAacConfig->framelength); 1049 } else 1050 { 1051 hAacEncoder->nDelay = DELAY_AAC(hAacConfig->framelength); /* AAC encoder delay */ 1052 } 1053 hAacConfig->ancDataBitRate = 0; 1054 } 1055 1056 if ( isSbrActive(hAacConfig) && 1057 ((InitFlags & AACENC_INIT_CONFIG) || (InitFlags & AACENC_INIT_STATES)) ) 1058 { 1059 INT sbrError; 1060 SBR_ELEMENT_INFO sbrElInfo[(8)]; 1061 CHANNEL_MAPPING channelMapping; 1062 1063 if ( FDKaacEnc_InitChannelMapping(hAacConfig->channelMode, 1064 hAacConfig->channelOrder, 1065 &channelMapping) != AAC_ENC_OK ) 1066 { 1067 return AACENC_INIT_ERROR; 1068 } 1069 1070 /* Check return value and if the SBR encoder can handle enough elements */ 1071 if (channelMapping.nElements > (8)) { 1072 return AACENC_INIT_ERROR; 1073 } 1074 1075 aacEncDistributeSbrBits(&channelMapping, sbrElInfo, hAacConfig->bitRate); 1076 1077 UINT initFlag = 0; 1078 initFlag += (InitFlags & AACENC_INIT_STATES) ? 1 : 0; 1079 1080 /* Let the SBR encoder take a look at the configuration and change if required. */ 1081 sbrError = sbrEncoder_Init( 1082 *hSbrEncoder, 1083 sbrElInfo, 1084 channelMapping.nElements, 1085 hAacEncoder->inputBuffer, 1086 &hAacConfig->bandWidth, 1087 &aacBufferOffset, 1088 &hAacConfig->nChannels, 1089 &hAacConfig->sampleRate, 1090 &hAacConfig->sbrRatio, 1091 &frameLength, 1092 hAacConfig->audioObjectType, 1093 &hAacEncoder->nDelay, 1094 (hAacConfig->audioObjectType == AOT_ER_AAC_ELD) ? 1 : TRANS_FAC, 1095 (config->userTpHeaderPeriod!=0xFF) ? config->userTpHeaderPeriod : DEFAULT_HEADER_PERIOD_REPETITION_RATE, 1096 initFlag 1097 ); 1098 1099 /* Suppress AOT reconfiguration and check error status. */ 1100 if (sbrError) { 1101 return AACENC_INIT_SBR_ERROR; 1102 } 1103 1104 if (hAacConfig->nChannels == 1) { 1105 hAacConfig->channelMode = MODE_1; 1106 } 1107 1108 /* Never use PNS if SBR is active */ 1109 if ( hAacConfig->usePns ) { 1110 hAacConfig->usePns = 0; 1111 } 1112 1113 /* estimated bitrate consumed by SBR or PS */ 1114 hAacConfig->ancDataBitRate = sbrEncoder_GetEstimateBitrate(*hSbrEncoder) ; 1115 1116 } /* sbr initialization */ 1117 1118 1119 /* 1120 * Initialize Transport - Module. 1121 */ 1122 if ( (InitFlags & AACENC_INIT_TRANSPORT) ) 1123 { 1124 UINT flags = 0; 1125 1126 FDKaacEnc_MapConfig( 1127 &hAacEncoder->coderConfig, 1128 config, 1129 getSbrSignalingMode(hAacConfig->audioObjectType, config->userTpType, config->userTpSignaling, hAacConfig->sbrRatio), 1130 hAacConfig); 1131 1132 /* create flags for transport encoder */ 1133 if (config->userTpAmxv != 0) { 1134 flags |= TP_FLAG_LATM_AMV; 1135 } 1136 /* Clear output buffer */ 1137 FDKmemclear(hAacEncoder->outBuffer, hAacEncoder->outBufferInBytes*sizeof(UCHAR)); 1138 1139 /* Initialize Bitstream encoder */ 1140 if ( transportEnc_Init(hAacEncoder->hTpEnc, hAacEncoder->outBuffer, hAacEncoder->outBufferInBytes, config->userTpType, &hAacEncoder->coderConfig, flags) != 0) { 1141 return AACENC_INIT_TP_ERROR; 1142 } 1143 1144 } /* transport initialization */ 1145 1146 /* 1147 * Initialize AAC - Core. 1148 */ 1149 if ( (InitFlags & AACENC_INIT_CONFIG) || 1150 (InitFlags & AACENC_INIT_STATES) ) 1151 { 1152 AAC_ENCODER_ERROR err; 1153 err = FDKaacEnc_Initialize(hAacEncoder->hAacEnc, 1154 hAacConfig, 1155 hAacEncoder->hTpEnc, 1156 (InitFlags & AACENC_INIT_STATES) ? 1 : 0); 1157 1158 if (err != AAC_ENC_OK) { 1159 return AACENC_INIT_AAC_ERROR; 1160 } 1161 1162 } /* aac initialization */ 1163 1164 /* 1165 * Initialize Meta Data - Encoder. 1166 */ 1167 if ( hAacEncoder->hMetadataEnc && (hAacEncoder->metaDataAllowed!=0) && 1168 ((InitFlags & AACENC_INIT_CONFIG) ||(InitFlags & AACENC_INIT_STATES)) ) 1169 { 1170 INT inputDataDelay = DELAY_AAC(hAacConfig->framelength); 1171 1172 if ( isSbrActive(hAacConfig) && hSbrEncoder!=NULL) { 1173 inputDataDelay = hAacConfig->sbrRatio*inputDataDelay + sbrEncoder_GetInputDataDelay(*hSbrEncoder); 1174 } 1175 1176 if ( FDK_MetadataEnc_Init(hAacEncoder->hMetadataEnc, 1177 ((InitFlags&AACENC_INIT_STATES) ? 1 : 0), 1178 config->userMetaDataMode, 1179 inputDataDelay, 1180 frameLength, 1181 config->userSamplerate, 1182 config->nChannels, 1183 config->userChannelMode, 1184 hAacConfig->channelOrder) != 0) 1185 { 1186 return AACENC_INIT_META_ERROR; 1187 } 1188 1189 hAacEncoder->nDelay += FDK_MetadataEnc_GetDelay(hAacEncoder->hMetadataEnc); 1190 } 1191 1192 /* 1193 * Update pointer to working buffer. 1194 */ 1195 if ( (InitFlags & AACENC_INIT_CONFIG) ) 1196 { 1197 hAacEncoder->inputBufferOffset = aacBufferOffset; 1198 1199 hAacEncoder->nSamplesToRead = frameLength * config->nChannels; 1200 1201 /* Make nDelay comparison compatible with config->nSamplesRead */ 1202 hAacEncoder->nDelay *= config->nChannels; 1203 1204 } /* parameter changed */ 1205 1206 return AACENC_OK; 1207 } 1208 1209 1210 AACENC_ERROR aacEncOpen( 1211 HANDLE_AACENCODER *phAacEncoder, 1212 const UINT encModules, 1213 const UINT maxChannels 1214 ) 1215 { 1216 AACENC_ERROR err = AACENC_OK; 1217 HANDLE_AACENCODER hAacEncoder = NULL; 1218 1219 if (phAacEncoder == NULL) { 1220 err = AACENC_INVALID_HANDLE; 1221 goto bail; 1222 } 1223 1224 /* allocate memory */ 1225 hAacEncoder = Get_AacEncoder(); 1226 1227 if (hAacEncoder == NULL) { 1228 err = AACENC_MEMORY_ERROR; 1229 goto bail; 1230 } 1231 1232 FDKmemclear(hAacEncoder, sizeof(AACENCODER)); 1233 1234 /* Specify encoder modules to be allocated. */ 1235 if (encModules==0) { 1236 hAacEncoder->encoder_modis = ENC_MODE_FLAG_AAC; 1237 hAacEncoder->encoder_modis |= ENC_MODE_FLAG_SBR; 1238 hAacEncoder->encoder_modis |= ENC_MODE_FLAG_PS; 1239 hAacEncoder->encoder_modis |= ENC_MODE_FLAG_META; 1240 } 1241 else { 1242 /* consider SAC and PS module */ 1243 hAacEncoder->encoder_modis = encModules; 1244 } 1245 1246 /* Determine max channel configuration. */ 1247 if (maxChannels==0) { 1248 hAacEncoder->nMaxAacChannels = (8); 1249 hAacEncoder->nMaxSbrChannels = (8); 1250 } 1251 else { 1252 hAacEncoder->nMaxAacChannels = (maxChannels&0x00FF); 1253 if ( (hAacEncoder->encoder_modis&ENC_MODE_FLAG_SBR) ) { 1254 hAacEncoder->nMaxSbrChannels = (maxChannels&0xFF00) ? (maxChannels>>8) : hAacEncoder->nMaxAacChannels; 1255 } 1256 1257 if ( (hAacEncoder->nMaxAacChannels>(8)) || (hAacEncoder->nMaxSbrChannels>(8)) ) { 1258 err = AACENC_INVALID_CONFIG; 1259 goto bail; 1260 } 1261 } /* maxChannels==0 */ 1262 1263 /* Max number of elements could be tuned any more. */ 1264 hAacEncoder->nMaxAacElements = fixMin((8), hAacEncoder->nMaxAacChannels); 1265 hAacEncoder->nMaxSbrElements = fixMin((8), hAacEncoder->nMaxSbrChannels); 1266 hAacEncoder->nMaxSubFrames = (1); 1267 1268 1269 /* In case of memory overlay, allocate memory out of libraries */ 1270 1271 hAacEncoder->inputBuffer = (INT_PCM*)FDKcalloc(hAacEncoder->nMaxAacChannels*INPUTBUFFER_SIZE, sizeof(INT_PCM)); 1272 1273 /* Open SBR Encoder */ 1274 if (hAacEncoder->encoder_modis&ENC_MODE_FLAG_SBR) { 1275 if ( sbrEncoder_Open(&hAacEncoder->hEnvEnc, 1276 hAacEncoder->nMaxSbrElements, 1277 hAacEncoder->nMaxSbrChannels, 1278 (hAacEncoder->encoder_modis&ENC_MODE_FLAG_PS) ? 1 : 0 ) ) 1279 { 1280 err = AACENC_MEMORY_ERROR; 1281 goto bail; 1282 } 1283 } /* (encoder_modis&ENC_MODE_FLAG_SBR) */ 1284 1285 1286 /* Open Aac Encoder */ 1287 if ( FDKaacEnc_Open(&hAacEncoder->hAacEnc, 1288 hAacEncoder->nMaxAacElements, 1289 hAacEncoder->nMaxAacChannels, 1290 (1)) != AAC_ENC_OK ) 1291 { 1292 err = AACENC_MEMORY_ERROR; 1293 goto bail; 1294 } 1295 1296 { /* Get bitstream outputbuffer size */ 1297 UINT ld_M; 1298 for (ld_M=1; (UINT)(1<<ld_M) < (hAacEncoder->nMaxSubFrames*hAacEncoder->nMaxAacChannels*6144)>>3; ld_M++) ; 1299 hAacEncoder->outBufferInBytes = (1<<ld_M); /* buffer has to be 2^n */ 1300 } 1301 hAacEncoder->outBuffer = GetRam_bsOutbuffer(); 1302 if (OUTPUTBUFFER_SIZE < hAacEncoder->outBufferInBytes ) { 1303 err = AACENC_MEMORY_ERROR; 1304 goto bail; 1305 } 1306 1307 /* Open Meta Data Encoder */ 1308 if (hAacEncoder->encoder_modis&ENC_MODE_FLAG_META) { 1309 if ( FDK_MetadataEnc_Open(&hAacEncoder->hMetadataEnc) ) 1310 { 1311 err = AACENC_MEMORY_ERROR; 1312 goto bail; 1313 } 1314 } /* (encoder_modis&ENC_MODE_FLAG_META) */ 1315 1316 /* Open Transport Encoder */ 1317 if ( transportEnc_Open(&hAacEncoder->hTpEnc) != 0 ) 1318 { 1319 err = AACENC_MEMORY_ERROR; 1320 goto bail; 1321 } 1322 else { 1323 C_ALLOC_SCRATCH_START(pLibInfo, LIB_INFO, FDK_MODULE_LAST); 1324 1325 FDKinitLibInfo( pLibInfo); 1326 transportEnc_GetLibInfo( pLibInfo ); 1327 1328 /* Get capabilty flag for transport encoder. */ 1329 hAacEncoder->CAPF_tpEnc = FDKlibInfo_getCapabilities( pLibInfo, FDK_TPENC); 1330 1331 C_ALLOC_SCRATCH_END(pLibInfo, LIB_INFO, FDK_MODULE_LAST); 1332 } 1333 if ( transportEnc_RegisterSbrCallback(hAacEncoder->hTpEnc, aacenc_SbrCallback, hAacEncoder) != 0 ) { 1334 err = AACENC_INIT_TP_ERROR; 1335 goto bail; 1336 } 1337 1338 /* Initialize encoder instance with default parameters. */ 1339 aacEncDefaultConfig(&hAacEncoder->aacConfig, &hAacEncoder->extParam); 1340 1341 /* Initialize headerPeriod in coderConfig for aacEncoder_GetParam(). */ 1342 hAacEncoder->coderConfig.headerPeriod = hAacEncoder->extParam.userTpHeaderPeriod; 1343 1344 /* All encoder modules have to be initialized */ 1345 hAacEncoder->InitFlags = AACENC_INIT_ALL; 1346 1347 /* Return encoder instance */ 1348 *phAacEncoder = hAacEncoder; 1349 1350 return err; 1351 1352 bail: 1353 aacEncClose(&hAacEncoder); 1354 1355 return err; 1356 } 1357 1358 1359 1360 AACENC_ERROR aacEncClose(HANDLE_AACENCODER *phAacEncoder) 1361 { 1362 AACENC_ERROR err = AACENC_OK; 1363 1364 if (phAacEncoder == NULL) { 1365 err = AACENC_INVALID_HANDLE; 1366 goto bail; 1367 } 1368 1369 if (*phAacEncoder != NULL) { 1370 HANDLE_AACENCODER hAacEncoder = *phAacEncoder; 1371 1372 1373 if (hAacEncoder->inputBuffer!=NULL) { 1374 FDKfree(hAacEncoder->inputBuffer); 1375 hAacEncoder->inputBuffer = NULL; 1376 } 1377 1378 if (hAacEncoder->outBuffer) { 1379 FreeRam_bsOutbuffer(&hAacEncoder->outBuffer); 1380 } 1381 1382 if (hAacEncoder->hEnvEnc) { 1383 sbrEncoder_Close (&hAacEncoder->hEnvEnc); 1384 } 1385 if (hAacEncoder->hAacEnc) { 1386 FDKaacEnc_Close (&hAacEncoder->hAacEnc); 1387 } 1388 1389 transportEnc_Close(&hAacEncoder->hTpEnc); 1390 1391 if (hAacEncoder->hMetadataEnc) { 1392 FDK_MetadataEnc_Close (&hAacEncoder->hMetadataEnc); 1393 } 1394 1395 Free_AacEncoder(phAacEncoder); 1396 } 1397 1398 bail: 1399 return err; 1400 } 1401 1402 AACENC_ERROR aacEncEncode( 1403 const HANDLE_AACENCODER hAacEncoder, 1404 const AACENC_BufDesc *inBufDesc, 1405 const AACENC_BufDesc *outBufDesc, 1406 const AACENC_InArgs *inargs, 1407 AACENC_OutArgs *outargs 1408 ) 1409 { 1410 AACENC_ERROR err = AACENC_OK; 1411 INT i, nBsBytes = 0; 1412 INT outBytes[(1)]; 1413 int nExtensions = 0; 1414 int ancDataExtIdx = -1; 1415 1416 /* deal with valid encoder handle */ 1417 if (hAacEncoder==NULL) { 1418 err = AACENC_INVALID_HANDLE; 1419 goto bail; 1420 } 1421 1422 1423 /* 1424 * Adjust user settings and trigger reinitialization. 1425 */ 1426 if (hAacEncoder->InitFlags!=0) { 1427 1428 err = aacEncInit(hAacEncoder, 1429 hAacEncoder->InitFlags, 1430 &hAacEncoder->extParam); 1431 1432 if (err!=AACENC_OK) { 1433 /* keep init flags alive! */ 1434 goto bail; 1435 } 1436 hAacEncoder->InitFlags = AACENC_INIT_NONE; 1437 } 1438 1439 if (outargs!=NULL) { 1440 FDKmemclear(outargs, sizeof(AACENC_OutArgs)); 1441 } 1442 1443 if (outBufDesc!=NULL) { 1444 for (i=0; i<outBufDesc->numBufs; i++) { 1445 if (outBufDesc->bufs[i]!=NULL) { 1446 FDKmemclear(outBufDesc->bufs[i], outBufDesc->bufSizes[i]); 1447 } 1448 } 1449 } 1450 1451 /* 1452 * If only encoder handle given, independent (re)initialization can be triggered. 1453 */ 1454 if ( (hAacEncoder!=NULL) & (inBufDesc==NULL) && (outBufDesc==NULL) && (inargs==NULL) && (outargs==NULL) ) { 1455 goto bail; 1456 } 1457 1458 /* reset buffer wich signals number of valid bytes in output bitstream buffer */ 1459 FDKmemclear(outBytes, hAacEncoder->aacConfig.nSubFrames*sizeof(INT)); 1460 1461 /* 1462 * Manage incoming audio samples. 1463 */ 1464 if ( (inargs->numInSamples > 0) && (getBufDescIdx(inBufDesc,IN_AUDIO_DATA) != -1) ) 1465 { 1466 /* Fetch data until nSamplesToRead reached */ 1467 INT idx = getBufDescIdx(inBufDesc,IN_AUDIO_DATA); 1468 INT newSamples = fixMax(0,fixMin(inargs->numInSamples, hAacEncoder->nSamplesToRead-hAacEncoder->nSamplesRead)); 1469 INT_PCM *pIn = hAacEncoder->inputBuffer+hAacEncoder->inputBufferOffset+hAacEncoder->nSamplesRead; 1470 1471 /* Copy new input samples to internal buffer */ 1472 if (inBufDesc->bufElSizes[idx]==(INT)sizeof(INT_PCM)) { 1473 FDKmemcpy(pIn, (INT_PCM*)inBufDesc->bufs[idx], newSamples*sizeof(INT_PCM)); /* Fast copy. */ 1474 } 1475 else if (inBufDesc->bufElSizes[idx]>(INT)sizeof(INT_PCM)) { 1476 for (i=0; i<newSamples; i++) { 1477 pIn[i] = (INT_PCM)(((LONG*)inBufDesc->bufs[idx])[i]>>16); /* Convert 32 to 16 bit. */ 1478 } 1479 } 1480 else { 1481 for (i=0; i<newSamples; i++) { 1482 pIn[i] = ((INT_PCM)(((SHORT*)inBufDesc->bufs[idx])[i]))<<16; /* Convert 16 to 32 bit. */ 1483 } 1484 } 1485 hAacEncoder->nSamplesRead += newSamples; 1486 1487 /* Number of fetched input buffer samples. */ 1488 outargs->numInSamples = newSamples; 1489 } 1490 1491 /* input buffer completely filled ? */ 1492 if (hAacEncoder->nSamplesRead < hAacEncoder->nSamplesToRead) 1493 { 1494 /* - eof reached and flushing enabled, or 1495 - return to main and wait for further incoming audio samples */ 1496 if (inargs->numInSamples==-1) 1497 { 1498 if ( (hAacEncoder->nZerosAppended < hAacEncoder->nDelay) 1499 ) 1500 { 1501 int nZeros = hAacEncoder->nSamplesToRead - hAacEncoder->nSamplesRead; 1502 1503 FDK_ASSERT(nZeros >= 0); 1504 1505 /* clear out until end-of-buffer */ 1506 if (nZeros) { 1507 FDKmemclear(hAacEncoder->inputBuffer+hAacEncoder->inputBufferOffset+hAacEncoder->nSamplesRead, sizeof(INT_PCM)*nZeros ); 1508 hAacEncoder->nZerosAppended += nZeros; 1509 hAacEncoder->nSamplesRead = hAacEncoder->nSamplesToRead; 1510 } 1511 } 1512 else { /* flushing completed */ 1513 err = AACENC_ENCODE_EOF; /* eof reached */ 1514 goto bail; 1515 } 1516 } 1517 else { /* inargs->numInSamples!= -1 */ 1518 goto bail; /* not enough samples in input buffer and no flushing enabled */ 1519 } 1520 } 1521 1522 /* init payload */ 1523 FDKmemclear(hAacEncoder->extPayload, sizeof(AACENC_EXT_PAYLOAD) * MAX_TOTAL_EXT_PAYLOADS); 1524 for (i = 0; i < MAX_TOTAL_EXT_PAYLOADS; i++) { 1525 hAacEncoder->extPayload[i].associatedChElement = -1; 1526 } 1527 FDKmemclear(hAacEncoder->extPayloadData, sizeof(hAacEncoder->extPayloadData)); 1528 FDKmemclear(hAacEncoder->extPayloadSize, sizeof(hAacEncoder->extPayloadSize)); 1529 1530 1531 /* 1532 * Calculate Meta Data info. 1533 */ 1534 if ( (hAacEncoder->hMetadataEnc!=NULL) && (hAacEncoder->metaDataAllowed!=0) ) { 1535 1536 const AACENC_MetaData *pMetaData = NULL; 1537 AACENC_EXT_PAYLOAD *pMetaDataExtPayload = NULL; 1538 UINT nMetaDataExtensions = 0; 1539 INT matrix_mixdown_idx = 0; 1540 1541 /* New meta data info available ? */ 1542 if ( getBufDescIdx(inBufDesc,IN_METADATA_SETUP) != -1 ) { 1543 pMetaData = (AACENC_MetaData*)inBufDesc->bufs[getBufDescIdx(inBufDesc,IN_METADATA_SETUP)]; 1544 } 1545 1546 FDK_MetadataEnc_Process(hAacEncoder->hMetadataEnc, 1547 hAacEncoder->inputBuffer+hAacEncoder->inputBufferOffset, 1548 hAacEncoder->nSamplesRead, 1549 pMetaData, 1550 &pMetaDataExtPayload, 1551 &nMetaDataExtensions, 1552 &matrix_mixdown_idx 1553 ); 1554 1555 for (i=0; i<(INT)nMetaDataExtensions; i++) { /* Get meta data extension payload. */ 1556 hAacEncoder->extPayload[nExtensions++] = pMetaDataExtPayload[i]; 1557 } 1558 1559 if ( (matrix_mixdown_idx!=-1) 1560 && ((hAacEncoder->extParam.userChannelMode==MODE_1_2_2)||(hAacEncoder->extParam.userChannelMode==MODE_1_2_2_1)) ) 1561 { 1562 /* Set matrix mixdown coefficient. */ 1563 UINT pceValue = (UINT)( (0<<3) | ((matrix_mixdown_idx&0x3)<<1) | 1 ); 1564 if (hAacEncoder->extParam.userPceAdditions != pceValue) { 1565 hAacEncoder->extParam.userPceAdditions = pceValue; 1566 hAacEncoder->InitFlags |= AACENC_INIT_TRANSPORT; 1567 } 1568 } 1569 } 1570 1571 1572 if ( isSbrActive(&hAacEncoder->aacConfig) ) { 1573 1574 INT nPayload = 0; 1575 1576 /* 1577 * Encode SBR data. 1578 */ 1579 if (sbrEncoder_EncodeFrame(hAacEncoder->hEnvEnc, 1580 hAacEncoder->inputBuffer, 1581 hAacEncoder->extParam.nChannels, 1582 hAacEncoder->extPayloadSize[nPayload], 1583 hAacEncoder->extPayloadData[nPayload] 1584 #if defined(EVAL_PACKAGE_SILENCE) || defined(EVAL_PACKAGE_SBR_SILENCE) 1585 ,hAacEncoder->hAacEnc->clearOutput 1586 #endif 1587 )) 1588 { 1589 err = AACENC_ENCODE_ERROR; 1590 goto bail; 1591 } 1592 else { 1593 /* Add SBR extension payload */ 1594 for (i = 0; i < (8); i++) { 1595 if (hAacEncoder->extPayloadSize[nPayload][i] > 0) { 1596 hAacEncoder->extPayload[nExtensions].pData = hAacEncoder->extPayloadData[nPayload][i]; 1597 { 1598 hAacEncoder->extPayload[nExtensions].dataSize = hAacEncoder->extPayloadSize[nPayload][i]; 1599 hAacEncoder->extPayload[nExtensions].associatedChElement = i; 1600 } 1601 hAacEncoder->extPayload[nExtensions].dataType = EXT_SBR_DATA; /* Once SBR Encoder supports SBR CRC set EXT_SBR_DATA_CRC */ 1602 nExtensions++; /* or EXT_SBR_DATA according to configuration. */ 1603 FDK_ASSERT(nExtensions<=MAX_TOTAL_EXT_PAYLOADS); 1604 } 1605 } 1606 nPayload++; 1607 } 1608 } /* sbrEnabled */ 1609 1610 if ( (inargs->numAncBytes > 0) && ( getBufDescIdx(inBufDesc,IN_ANCILLRY_DATA)!=-1 ) ) { 1611 INT idx = getBufDescIdx(inBufDesc,IN_ANCILLRY_DATA); 1612 hAacEncoder->extPayload[nExtensions].dataSize = inargs->numAncBytes * 8; 1613 hAacEncoder->extPayload[nExtensions].pData = (UCHAR*)inBufDesc->bufs[idx]; 1614 hAacEncoder->extPayload[nExtensions].dataType = EXT_DATA_ELEMENT; 1615 hAacEncoder->extPayload[nExtensions].associatedChElement = -1; 1616 ancDataExtIdx = nExtensions; /* store index */ 1617 nExtensions++; 1618 } 1619 1620 /* 1621 * Encode AAC - Core. 1622 */ 1623 if ( FDKaacEnc_EncodeFrame( hAacEncoder->hAacEnc, 1624 hAacEncoder->hTpEnc, 1625 hAacEncoder->inputBuffer, 1626 outBytes, 1627 hAacEncoder->extPayload 1628 ) != AAC_ENC_OK ) 1629 { 1630 err = AACENC_ENCODE_ERROR; 1631 goto bail; 1632 } 1633 1634 if (ancDataExtIdx >= 0) { 1635 outargs->numAncBytes = inargs->numAncBytes - (hAacEncoder->extPayload[ancDataExtIdx].dataSize>>3); 1636 } 1637 1638 /* samples exhausted */ 1639 hAacEncoder->nSamplesRead -= hAacEncoder->nSamplesToRead; 1640 1641 /* 1642 * Delay balancing buffer handling 1643 */ 1644 if (isSbrActive(&hAacEncoder->aacConfig)) { 1645 sbrEncoder_UpdateBuffers(hAacEncoder->hEnvEnc, hAacEncoder->inputBuffer); 1646 } 1647 1648 /* 1649 * Make bitstream public 1650 */ 1651 if (outBufDesc->numBufs>=1) { 1652 1653 INT bsIdx = getBufDescIdx(outBufDesc,OUT_BITSTREAM_DATA); 1654 INT auIdx = getBufDescIdx(outBufDesc,OUT_AU_SIZES); 1655 1656 for (i=0,nBsBytes=0; i<hAacEncoder->aacConfig.nSubFrames; i++) { 1657 nBsBytes += outBytes[i]; 1658 1659 if (auIdx!=-1) { 1660 ((INT*)outBufDesc->bufs[auIdx])[i] = outBytes[i]; 1661 } 1662 } 1663 1664 if ( (bsIdx!=-1) && (outBufDesc->bufSizes[bsIdx]>=nBsBytes) ) { 1665 FDKmemcpy(outBufDesc->bufs[bsIdx], hAacEncoder->outBuffer, sizeof(UCHAR)*nBsBytes); 1666 outargs->numOutBytes = nBsBytes; 1667 } 1668 else { 1669 /* output buffer too small, can't write valid bitstream */ 1670 err = AACENC_ENCODE_ERROR; 1671 goto bail; 1672 } 1673 } 1674 1675 bail: 1676 if (err == AACENC_ENCODE_ERROR) { 1677 /* All encoder modules have to be initialized */ 1678 hAacEncoder->InitFlags = AACENC_INIT_ALL; 1679 } 1680 1681 return err; 1682 } 1683 1684 static 1685 AAC_ENCODER_ERROR aacEncGetConf(HANDLE_AACENCODER hAacEncoder, 1686 UINT *size, 1687 UCHAR *confBuffer) 1688 { 1689 FDK_BITSTREAM tmpConf; 1690 UINT confType; 1691 UCHAR buf[64]; 1692 int err; 1693 1694 /* Init bit buffer */ 1695 FDKinitBitStream(&tmpConf, buf, 64, 0, BS_WRITER); 1696 1697 /* write conf in tmp buffer */ 1698 err = transportEnc_GetConf(hAacEncoder->hTpEnc, &hAacEncoder->coderConfig, &tmpConf, &confType); 1699 1700 /* copy data to outbuffer: length in bytes */ 1701 FDKbyteAlign(&tmpConf, 0); 1702 1703 /* Check buffer size */ 1704 if (FDKgetValidBits(&tmpConf) > ((*size)<<3)) 1705 return AAC_ENC_UNKNOWN; 1706 1707 FDKfetchBuffer(&tmpConf, confBuffer, size); 1708 1709 if (err != 0) 1710 return AAC_ENC_UNKNOWN; 1711 else 1712 return AAC_ENC_OK; 1713 } 1714 1715 1716 AACENC_ERROR aacEncGetLibInfo(LIB_INFO *info) 1717 { 1718 int i = 0; 1719 1720 if (info == NULL) { 1721 return AACENC_INVALID_HANDLE; 1722 } 1723 1724 FDK_toolsGetLibInfo( info ); 1725 transportEnc_GetLibInfo( info ); 1726 1727 sbrEncoder_GetLibInfo( info ); 1728 1729 /* search for next free tab */ 1730 for (i = 0; i < FDK_MODULE_LAST; i++) { 1731 if (info[i].module_id == FDK_NONE) break; 1732 } 1733 if (i == FDK_MODULE_LAST) { 1734 return AACENC_INIT_ERROR; 1735 } 1736 1737 info[i].module_id = FDK_AACENC; 1738 info[i].build_date = (char*)AACENCODER_LIB_BUILD_DATE; 1739 info[i].build_time = (char*)AACENCODER_LIB_BUILD_TIME; 1740 info[i].title = (char*)AACENCODER_LIB_TITLE; 1741 info[i].version = LIB_VERSION(AACENCODER_LIB_VL0, AACENCODER_LIB_VL1, AACENCODER_LIB_VL2);; 1742 LIB_VERSION_STRING(&info[i]); 1743 1744 /* Capability flags */ 1745 info[i].flags = 0 1746 | CAPF_AAC_1024 | CAPF_AAC_LC 1747 | CAPF_AAC_512 1748 | CAPF_AAC_480 1749 | CAPF_AAC_DRC 1750 ; 1751 /* End of flags */ 1752 1753 return AACENC_OK; 1754 } 1755 1756 AACENC_ERROR aacEncoder_SetParam( 1757 const HANDLE_AACENCODER hAacEncoder, 1758 const AACENC_PARAM param, 1759 const UINT value 1760 ) 1761 { 1762 AACENC_ERROR err = AACENC_OK; 1763 USER_PARAM *settings = &hAacEncoder->extParam; 1764 1765 /* check encoder handle */ 1766 if (hAacEncoder == NULL) { 1767 err = AACENC_INVALID_HANDLE; 1768 goto bail; 1769 } 1770 1771 /* apply param value */ 1772 switch (param) 1773 { 1774 case AACENC_AOT: 1775 if (settings->userAOT != (AUDIO_OBJECT_TYPE)value) { 1776 /* check if AOT matches the allocated modules */ 1777 switch ( value ) { 1778 case AOT_PS: 1779 if (!(hAacEncoder->encoder_modis & (ENC_MODE_FLAG_PS))) { 1780 err = AACENC_INVALID_CONFIG; 1781 goto bail; 1782 } 1783 case AOT_SBR: 1784 if (!(hAacEncoder->encoder_modis & (ENC_MODE_FLAG_SBR))) { 1785 err = AACENC_INVALID_CONFIG; 1786 goto bail; 1787 } 1788 case AOT_AAC_LC: 1789 case AOT_ER_AAC_LD: 1790 case AOT_ER_AAC_ELD: 1791 if (!(hAacEncoder->encoder_modis & (ENC_MODE_FLAG_AAC))) { 1792 err = AACENC_INVALID_CONFIG; 1793 goto bail; 1794 } 1795 break; 1796 default: 1797 err = AACENC_INVALID_CONFIG; 1798 goto bail; 1799 }/* switch value */ 1800 settings->userAOT = (AUDIO_OBJECT_TYPE)value; 1801 hAacEncoder->InitFlags |= AACENC_INIT_CONFIG | AACENC_INIT_STATES | AACENC_INIT_TRANSPORT; 1802 } 1803 break; 1804 case AACENC_BITRATE: 1805 if (settings->userBitrate != value) { 1806 settings->userBitrate = value; 1807 hAacEncoder->InitFlags |= AACENC_INIT_CONFIG | AACENC_INIT_TRANSPORT; 1808 } 1809 break; 1810 case AACENC_BITRATEMODE: 1811 if (settings->userBitrateMode != value) { 1812 switch ( value ) { 1813 case 0: 1814 case 1: case 2: case 3: case 4: case 5: 1815 case 8: 1816 settings->userBitrateMode = value; 1817 hAacEncoder->InitFlags |= AACENC_INIT_CONFIG | AACENC_INIT_TRANSPORT; 1818 break; 1819 default: 1820 err = AACENC_INVALID_CONFIG; 1821 break; 1822 } /* switch value */ 1823 } 1824 break; 1825 case AACENC_SAMPLERATE: 1826 if (settings->userSamplerate != value) { 1827 if ( !( (value==8000) || (value==11025) || (value==12000) || (value==16000) || (value==22050) || (value==24000) || 1828 (value==32000) || (value==44100) || (value==48000) || (value==64000) || (value==88200) || (value==96000) ) ) 1829 { 1830 err = AACENC_INVALID_CONFIG; 1831 break; 1832 } 1833 settings->userSamplerate = value; 1834 hAacEncoder->nSamplesRead = 0; /* reset internal inputbuffer */ 1835 hAacEncoder->InitFlags |= AACENC_INIT_CONFIG | AACENC_INIT_STATES | AACENC_INIT_TRANSPORT; 1836 } 1837 break; 1838 case AACENC_CHANNELMODE: 1839 if (settings->userChannelMode != (CHANNEL_MODE)value) { 1840 const CHANNEL_MODE_CONFIG_TAB* pConfig = FDKaacEnc_GetChannelModeConfiguration((CHANNEL_MODE)value); 1841 if (pConfig==NULL) { 1842 err = AACENC_INVALID_CONFIG; 1843 break; 1844 } 1845 if ( (pConfig->nElements > hAacEncoder->nMaxAacElements) 1846 || (pConfig->nChannelsEff > hAacEncoder->nMaxAacChannels) 1847 || !(((value>=1) && (value<=7))||((value>=33) && (value<=34))) 1848 ) 1849 { 1850 err = AACENC_INVALID_CONFIG; 1851 break; 1852 } 1853 1854 settings->userChannelMode = (CHANNEL_MODE)value; 1855 settings->nChannels = pConfig->nChannels; 1856 hAacEncoder->nSamplesRead = 0; /* reset internal inputbuffer */ 1857 hAacEncoder->InitFlags |= AACENC_INIT_CONFIG | AACENC_INIT_TRANSPORT; 1858 } 1859 break; 1860 case AACENC_BANDWIDTH: 1861 if (settings->userBandwidth != value) { 1862 settings->userBandwidth = value; 1863 hAacEncoder->InitFlags |= AACENC_INIT_CONFIG; 1864 } 1865 break; 1866 case AACENC_CHANNELORDER: 1867 if (hAacEncoder->aacConfig.channelOrder != (CHANNEL_ORDER)value) { 1868 if (! ((value==0) || (value==1)) ) { 1869 err = AACENC_INVALID_CONFIG; 1870 break; 1871 } 1872 hAacEncoder->aacConfig.channelOrder = (CHANNEL_ORDER)value; 1873 hAacEncoder->nSamplesRead = 0; /* reset internal inputbuffer */ 1874 hAacEncoder->InitFlags |= AACENC_INIT_CONFIG | AACENC_INIT_STATES | AACENC_INIT_TRANSPORT; 1875 } 1876 break; 1877 case AACENC_AFTERBURNER: 1878 if (settings->userAfterburner != value) { 1879 if (! ((value==0) || (value==1)) ) { 1880 err = AACENC_INVALID_CONFIG; 1881 break; 1882 } 1883 settings->userAfterburner = value; 1884 hAacEncoder->InitFlags |= AACENC_INIT_CONFIG; 1885 } 1886 break; 1887 case AACENC_GRANULE_LENGTH: 1888 if (settings->userFramelength != value) { 1889 switch (value) { 1890 case 1024: 1891 case 512: 1892 case 480: 1893 settings->userFramelength = value; 1894 hAacEncoder->InitFlags |= AACENC_INIT_CONFIG | AACENC_INIT_TRANSPORT; 1895 break; 1896 default: 1897 err = AACENC_INVALID_CONFIG; 1898 break; 1899 } 1900 } 1901 break; 1902 case AACENC_SBR_RATIO: 1903 if (settings->userSbrRatio != value) { 1904 if (! ((value==0) || (value==1) || (value==2)) ) { 1905 err = AACENC_INVALID_CONFIG; 1906 break; 1907 } 1908 settings->userSbrRatio = value; 1909 hAacEncoder->InitFlags |= AACENC_INIT_CONFIG | AACENC_INIT_STATES | AACENC_INIT_TRANSPORT; 1910 } 1911 break; 1912 case AACENC_SBR_MODE: 1913 if (settings->userSbrEnabled != value) { 1914 settings->userSbrEnabled = value; 1915 hAacEncoder->InitFlags |= AACENC_INIT_CONFIG | AACENC_INIT_STATES | AACENC_INIT_TRANSPORT; 1916 } 1917 break; 1918 case AACENC_TRANSMUX: 1919 if (settings->userTpType != (TRANSPORT_TYPE)value) { 1920 1921 TRANSPORT_TYPE type = (TRANSPORT_TYPE)value; 1922 UINT flags = hAacEncoder->CAPF_tpEnc; 1923 1924 if ( !( ((type==TT_MP4_ADIF) && (flags&CAPF_ADIF)) 1925 || ((type==TT_MP4_ADTS) && (flags&CAPF_ADTS)) 1926 || ((type==TT_MP4_LATM_MCP0) && ((flags&CAPF_LATM) && (flags&CAPF_RAWPACKETS))) 1927 || ((type==TT_MP4_LATM_MCP1) && ((flags&CAPF_LATM) && (flags&CAPF_RAWPACKETS))) 1928 || ((type==TT_MP4_LOAS) && (flags&CAPF_LOAS)) 1929 || ((type==TT_MP4_RAW) && (flags&CAPF_RAWPACKETS)) 1930 ) ) 1931 { 1932 err = AACENC_INVALID_CONFIG; 1933 break; 1934 } 1935 settings->userTpType = (TRANSPORT_TYPE)value; 1936 hAacEncoder->InitFlags |= AACENC_INIT_TRANSPORT; 1937 } 1938 break; 1939 case AACENC_SIGNALING_MODE: 1940 if (settings->userTpSignaling != value) { 1941 if ( !((value==0) || (value==1) || (value==2)) ) { 1942 err = AACENC_INVALID_CONFIG; 1943 break; 1944 } 1945 settings->userTpSignaling = value; 1946 hAacEncoder->InitFlags |= AACENC_INIT_TRANSPORT; 1947 } 1948 break; 1949 case AACENC_PROTECTION: 1950 if (settings->userTpProtection != value) { 1951 if ( !((value==0) || (value==1)) ) { 1952 err = AACENC_INVALID_CONFIG; 1953 break; 1954 } 1955 settings->userTpProtection = value; 1956 hAacEncoder->InitFlags |= AACENC_INIT_TRANSPORT; 1957 } 1958 break; 1959 case AACENC_HEADER_PERIOD: 1960 if (settings->userTpHeaderPeriod != value) { 1961 settings->userTpHeaderPeriod = value; 1962 hAacEncoder->InitFlags |= AACENC_INIT_TRANSPORT; 1963 } 1964 break; 1965 case AACENC_AUDIOMUXVER: 1966 if (settings->userTpAmxv != value) { 1967 if ( !((value==0) || (value==1) || (value==2)) ) { 1968 err = AACENC_INVALID_CONFIG; 1969 break; 1970 } 1971 settings->userTpAmxv = value; 1972 hAacEncoder->InitFlags |= AACENC_INIT_TRANSPORT; 1973 } 1974 break; 1975 case AACENC_TPSUBFRAMES: 1976 if (settings->userTpNsubFrames != value) { 1977 if (! ( (value>=1) && (value<=4) ) ) { 1978 err = AACENC_INVALID_CONFIG; 1979 break; 1980 } 1981 settings->userTpNsubFrames = value; 1982 hAacEncoder->InitFlags |= AACENC_INIT_TRANSPORT; 1983 } 1984 break; 1985 case AACENC_ANCILLARY_BITRATE: 1986 if (settings->userAncDataRate != value) { 1987 settings->userAncDataRate = value; 1988 } 1989 break; 1990 case AACENC_CONTROL_STATE: 1991 if (hAacEncoder->InitFlags != value) { 1992 if (value&AACENC_RESET_INBUFFER) { 1993 hAacEncoder->nSamplesRead = 0; 1994 } 1995 hAacEncoder->InitFlags = value; 1996 } 1997 break; 1998 case AACENC_METADATA_MODE: 1999 if ((UINT)settings->userMetaDataMode != value) { 2000 if ( !(((INT)value>=0) && ((INT)value<=2)) ) { 2001 err = AACENC_INVALID_CONFIG; 2002 break; 2003 } 2004 settings->userMetaDataMode = value; 2005 hAacEncoder->InitFlags |= AACENC_INIT_CONFIG; 2006 } 2007 break; 2008 case AACENC_PEAK_BITRATE: 2009 if (settings->userPeakBitrate != value) { 2010 settings->userPeakBitrate = value; 2011 hAacEncoder->InitFlags |= AACENC_INIT_CONFIG | AACENC_INIT_TRANSPORT; 2012 } 2013 break; 2014 default: 2015 err = AACENC_UNSUPPORTED_PARAMETER; 2016 break; 2017 } /* switch(param) */ 2018 2019 bail: 2020 return err; 2021 } 2022 2023 UINT aacEncoder_GetParam( 2024 const HANDLE_AACENCODER hAacEncoder, 2025 const AACENC_PARAM param 2026 ) 2027 { 2028 UINT value = 0; 2029 USER_PARAM *settings = &hAacEncoder->extParam; 2030 2031 /* check encoder handle */ 2032 if (hAacEncoder == NULL) { 2033 goto bail; 2034 } 2035 2036 /* apply param value */ 2037 switch (param) 2038 { 2039 case AACENC_AOT: 2040 value = (UINT)hAacEncoder->aacConfig.audioObjectType; 2041 break; 2042 case AACENC_BITRATE: 2043 value = (UINT)((hAacEncoder->aacConfig.bitrateMode==AACENC_BR_MODE_CBR) ? hAacEncoder->aacConfig.bitRate : -1); 2044 break; 2045 case AACENC_BITRATEMODE: 2046 value = (UINT)hAacEncoder->aacConfig.bitrateMode; 2047 break; 2048 case AACENC_SAMPLERATE: 2049 value = (UINT)hAacEncoder->coderConfig.extSamplingRate; 2050 break; 2051 case AACENC_CHANNELMODE: 2052 value = (UINT)hAacEncoder->aacConfig.channelMode; 2053 break; 2054 case AACENC_BANDWIDTH: 2055 value = (UINT)hAacEncoder->aacConfig.bandWidth; 2056 break; 2057 case AACENC_CHANNELORDER: 2058 value = (UINT)hAacEncoder->aacConfig.channelOrder; 2059 break; 2060 case AACENC_AFTERBURNER: 2061 value = (UINT)hAacEncoder->aacConfig.useRequant; 2062 break; 2063 case AACENC_GRANULE_LENGTH: 2064 value = (UINT)hAacEncoder->aacConfig.framelength; 2065 break; 2066 case AACENC_SBR_RATIO: 2067 value = isSbrActive(&hAacEncoder->aacConfig) ? hAacEncoder->aacConfig.sbrRatio : 0; 2068 break; 2069 case AACENC_SBR_MODE: 2070 value = (UINT) (hAacEncoder->aacConfig.syntaxFlags & AC_SBR_PRESENT) ? 1 : 0; 2071 break; 2072 case AACENC_TRANSMUX: 2073 value = (UINT)settings->userTpType; 2074 break; 2075 case AACENC_SIGNALING_MODE: 2076 value = (UINT)getSbrSignalingMode(hAacEncoder->aacConfig.audioObjectType, settings->userTpType, settings->userTpSignaling, hAacEncoder->aacConfig.sbrRatio); 2077 break; 2078 case AACENC_PROTECTION: 2079 value = (UINT)settings->userTpProtection; 2080 break; 2081 case AACENC_HEADER_PERIOD: 2082 value = (UINT)hAacEncoder->coderConfig.headerPeriod; 2083 break; 2084 case AACENC_AUDIOMUXVER: 2085 value = (UINT)hAacEncoder->aacConfig.audioMuxVersion; 2086 break; 2087 case AACENC_TPSUBFRAMES: 2088 value = (UINT)settings->userTpNsubFrames; 2089 break; 2090 case AACENC_ANCILLARY_BITRATE: 2091 value = (UINT)hAacEncoder->aacConfig.anc_Rate; 2092 break; 2093 case AACENC_CONTROL_STATE: 2094 value = (UINT)hAacEncoder->InitFlags; 2095 break; 2096 case AACENC_METADATA_MODE: 2097 value = (hAacEncoder->metaDataAllowed==0) ? 0 : (UINT)settings->userMetaDataMode; 2098 break; 2099 case AACENC_PEAK_BITRATE: 2100 value = (UINT)-1; /* peak bitrate parameter is meaningless */ 2101 if ( ((INT)hAacEncoder->extParam.userPeakBitrate!=-1) ) { 2102 value = (UINT)(fMax((INT)hAacEncoder->extParam.userPeakBitrate, hAacEncoder->aacConfig.bitRate)); /* peak bitrate parameter is in use */ 2103 } 2104 break; 2105 default: 2106 //err = MPS_INVALID_PARAMETER; 2107 break; 2108 } /* switch(param) */ 2109 2110 bail: 2111 return value; 2112 } 2113 2114 AACENC_ERROR aacEncInfo( 2115 const HANDLE_AACENCODER hAacEncoder, 2116 AACENC_InfoStruct *pInfo 2117 ) 2118 { 2119 AACENC_ERROR err = AACENC_OK; 2120 2121 FDKmemclear(pInfo, sizeof(AACENC_InfoStruct)); 2122 pInfo->confSize = 64; /* pre-initialize */ 2123 2124 pInfo->maxOutBufBytes = ((hAacEncoder->nMaxAacChannels*6144)+7)>>3; 2125 pInfo->maxAncBytes = hAacEncoder->aacConfig.maxAncBytesPerAU; 2126 pInfo->inBufFillLevel = hAacEncoder->nSamplesRead/hAacEncoder->extParam.nChannels; 2127 pInfo->inputChannels = hAacEncoder->extParam.nChannels; 2128 pInfo->frameLength = hAacEncoder->nSamplesToRead/hAacEncoder->extParam.nChannels; 2129 pInfo->encoderDelay = hAacEncoder->nDelay/hAacEncoder->extParam.nChannels; 2130 2131 /* Get encoder configuration */ 2132 if ( aacEncGetConf(hAacEncoder, &pInfo->confSize, &pInfo->confBuf[0]) != AAC_ENC_OK) { 2133 err = AACENC_INIT_ERROR; 2134 goto bail; 2135 } 2136 bail: 2137 return err; 2138 } 2139 2140
