| /* ----------------------------------------------------------------------------- | |
| Software License for The Fraunhofer FDK AAC Codec Library for Android | |
| © Copyright 1995 - 2020 Fraunhofer-Gesellschaft zur Förderung der angewandten | |
| Forschung e.V. All rights reserved. | |
| 1. INTRODUCTION | |
| The Fraunhofer FDK AAC Codec Library for Android ("FDK AAC Codec") is software | |
| that implements the MPEG Advanced Audio Coding ("AAC") encoding and decoding | |
| scheme for digital audio. This FDK AAC Codec software is intended to be used on | |
| a wide variety of Android devices. | |
| AAC's HE-AAC and HE-AAC v2 versions are regarded as today's most efficient | |
| general perceptual audio codecs. AAC-ELD is considered the best-performing | |
| full-bandwidth communications codec by independent studies and is widely | |
| deployed. AAC has been standardized by ISO and IEC as part of the MPEG | |
| specifications. | |
| Patent licenses for necessary patent claims for the FDK AAC Codec (including | |
| those of Fraunhofer) may be obtained through Via Licensing | |
| (www.vialicensing.com) or through the respective patent owners individually for | |
| the purpose of encoding or decoding bit streams in products that are compliant | |
| with the ISO/IEC MPEG audio standards. Please note that most manufacturers of | |
| Android devices already license these patent claims through Via Licensing or | |
| directly from the patent owners, and therefore FDK AAC Codec software may | |
| already be covered under those patent licenses when it is used for those | |
| licensed purposes only. | |
| Commercially-licensed AAC software libraries, including floating-point versions | |
| with enhanced sound quality, are also available from Fraunhofer. Users are | |
| encouraged to check the Fraunhofer website for additional applications | |
| information and documentation. | |
| 2. COPYRIGHT LICENSE | |
| Redistribution and use in source and binary forms, with or without modification, | |
| are permitted without payment of copyright license fees provided that you | |
| satisfy the following conditions: | |
| You must retain the complete text of this software license in redistributions of | |
| the FDK AAC Codec or your modifications thereto in source code form. | |
| You must retain the complete text of this software license in the documentation | |
| and/or other materials provided with redistributions of the FDK AAC Codec or | |
| your modifications thereto in binary form. You must make available free of | |
| charge copies of the complete source code of the FDK AAC Codec and your | |
| modifications thereto to recipients of copies in binary form. | |
| The name of Fraunhofer may not be used to endorse or promote products derived | |
| from this library without prior written permission. | |
| You may not charge copyright license fees for anyone to use, copy or distribute | |
| the FDK AAC Codec software or your modifications thereto. | |
| Your modified versions of the FDK AAC Codec must carry prominent notices stating | |
| that you changed the software and the date of any change. For modified versions | |
| of the FDK AAC Codec, the term "Fraunhofer FDK AAC Codec Library for Android" | |
| must be replaced by the term "Third-Party Modified Version of the Fraunhofer FDK | |
| AAC Codec Library for Android." | |
| 3. NO PATENT LICENSE | |
| NO EXPRESS OR IMPLIED LICENSES TO ANY PATENT CLAIMS, including without | |
| limitation the patents of Fraunhofer, ARE GRANTED BY THIS SOFTWARE LICENSE. | |
| Fraunhofer provides no warranty of patent non-infringement with respect to this | |
| software. | |
| You may use this FDK AAC Codec software or modifications thereto only for | |
| purposes that are authorized by appropriate patent licenses. | |
| 4. DISCLAIMER | |
| This FDK AAC Codec software is provided by Fraunhofer on behalf of the copyright | |
| holders and contributors "AS IS" and WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, | |
| including but not limited to the implied warranties of merchantability and | |
| fitness for a particular purpose. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR | |
| CONTRIBUTORS BE LIABLE for any direct, indirect, incidental, special, exemplary, | |
| or consequential damages, including but not limited to procurement of substitute | |
| goods or services; loss of use, data, or profits, or business interruption, | |
| however caused and on any theory of liability, whether in contract, strict | |
| liability, or tort (including negligence), arising in any way out of the use of | |
| this software, even if advised of the possibility of such damage. | |
| 5. CONTACT INFORMATION | |
| Fraunhofer Institute for Integrated Circuits IIS | |
| Attention: Audio and Multimedia Departments - FDK AAC LL | |
| Am Wolfsmantel 33 | |
| 91058 Erlangen, Germany | |
| www.iis.fraunhofer.de/amm | |
| amm-info@iis.fraunhofer.de | |
| ----------------------------------------------------------------------------- */ | |
| /**************************** AAC decoder library ****************************** | |
| Author(s): Josef Hoepfl | |
| Description: | |
| *******************************************************************************/ | |
| #include "channel.h" | |
| #include "aacdecoder.h" | |
| #include "block.h" | |
| #include "aacdec_tns.h" | |
| #include "FDK_bitstream.h" | |
| #include "conceal.h" | |
| #include "rvlc.h" | |
| #include "aacdec_hcr.h" | |
| #include "usacdec_lpd.h" | |
| #include "usacdec_fac.h" | |
| static void MapMidSideMaskToPnsCorrelation( | |
| CAacDecoderChannelInfo *pAacDecoderChannelInfo[2]) { | |
| int group; | |
| for (group = 0; group < pAacDecoderChannelInfo[L]->icsInfo.WindowGroups; | |
| group++) { | |
| UCHAR groupMask = 1 << group; | |
| for (UCHAR band = 0; band < pAacDecoderChannelInfo[L]->icsInfo.MaxSfBands; | |
| band++) { | |
| if (pAacDecoderChannelInfo[L]->pComData->jointStereoData.MsUsed[band] & | |
| groupMask) { /* channels are correlated */ | |
| CPns_SetCorrelation(&pAacDecoderChannelInfo[L]->data.aac.PnsData, group, | |
| band, 0); | |
| if (CPns_IsPnsUsed(&pAacDecoderChannelInfo[L]->data.aac.PnsData, group, | |
| band) && | |
| CPns_IsPnsUsed(&pAacDecoderChannelInfo[R]->data.aac.PnsData, group, | |
| band)) | |
| pAacDecoderChannelInfo[L]->pComData->jointStereoData.MsUsed[band] ^= | |
| groupMask; /* clear the groupMask-bit */ | |
| } | |
| } | |
| } | |
| } | |
| static void Clean_Complex_Prediction_coefficients( | |
| CJointStereoPersistentData *pJointStereoPersistentData, int windowGroups, | |
| const int low_limit, const int high_limit) { | |
| for (int group = 0; group < windowGroups; group++) { | |
| for (int sfb = low_limit; sfb < high_limit; sfb++) { | |
| pJointStereoPersistentData->alpha_q_re_prev[group][sfb] = 0; | |
| pJointStereoPersistentData->alpha_q_im_prev[group][sfb] = 0; | |
| } | |
| } | |
| } | |
| /*! | |
| \brief Decode channel pair element | |
| The function decodes a channel pair element. | |
| \return none | |
| */ | |
| void CChannelElement_Decode( | |
| CAacDecoderChannelInfo | |
| *pAacDecoderChannelInfo[2], /*!< pointer to aac decoder channel info */ | |
| CAacDecoderStaticChannelInfo *pAacDecoderStaticChannelInfo[2], | |
| SamplingRateInfo *pSamplingRateInfo, UINT flags, UINT elFlags, | |
| int el_channels) { | |
| int ch = 0; | |
| int maxSfBandsL = 0, maxSfBandsR = 0; | |
| int maybe_jstereo = (el_channels > 1); | |
| if (flags & (AC_USAC | AC_RSVD50 | AC_RSV603DA) && el_channels == 2) { | |
| if (pAacDecoderChannelInfo[L]->data.usac.core_mode || | |
| pAacDecoderChannelInfo[R]->data.usac.core_mode) { | |
| maybe_jstereo = 0; | |
| } | |
| } | |
| if (maybe_jstereo) { | |
| maxSfBandsL = | |
| GetScaleFactorBandsTransmitted(&pAacDecoderChannelInfo[L]->icsInfo); | |
| maxSfBandsR = | |
| GetScaleFactorBandsTransmitted(&pAacDecoderChannelInfo[R]->icsInfo); | |
| /* apply ms */ | |
| if (pAacDecoderChannelInfo[L]->pDynData->RawDataInfo.CommonWindow) { | |
| if (!(flags & (AC_USAC | AC_RSVD50 | AC_RSV603DA))) { | |
| if (pAacDecoderChannelInfo[L]->data.aac.PnsData.PnsActive || | |
| pAacDecoderChannelInfo[R]->data.aac.PnsData.PnsActive) { | |
| MapMidSideMaskToPnsCorrelation(pAacDecoderChannelInfo); | |
| } | |
| } | |
| /* if tns_on_lr == 1 run MS */ /* && | |
| (pAacDecoderChannelInfo[L]->pDynData->specificTo.usac.tns_active | |
| == 1) */ | |
| if (((flags & (AC_USAC | AC_RSVD50 | AC_RSV603DA)) && | |
| (pAacDecoderChannelInfo[L]->pDynData->specificTo.usac.tns_on_lr == | |
| 1)) || | |
| ((flags & (AC_USAC | AC_RSVD50 | AC_RSV603DA)) == 0)) { | |
| int max_sfb_ste = (INT)(pAacDecoderChannelInfo[L]->icsInfo.max_sfb_ste); | |
| CJointStereo_ApplyMS( | |
| pAacDecoderChannelInfo, pAacDecoderStaticChannelInfo, | |
| pAacDecoderChannelInfo[L]->pSpectralCoefficient, | |
| pAacDecoderChannelInfo[R]->pSpectralCoefficient, | |
| pAacDecoderChannelInfo[L]->pDynData->aSfbScale, | |
| pAacDecoderChannelInfo[R]->pDynData->aSfbScale, | |
| pAacDecoderChannelInfo[L]->specScale, | |
| pAacDecoderChannelInfo[R]->specScale, | |
| GetScaleFactorBandOffsets(&pAacDecoderChannelInfo[L]->icsInfo, | |
| pSamplingRateInfo), | |
| GetWindowGroupLengthTable(&pAacDecoderChannelInfo[L]->icsInfo), | |
| GetWindowGroups(&pAacDecoderChannelInfo[L]->icsInfo), max_sfb_ste, | |
| maxSfBandsL, maxSfBandsR, | |
| pAacDecoderChannelInfo[L] | |
| ->pComData->jointStereoData.store_dmx_re_prev, | |
| &(pAacDecoderChannelInfo[L] | |
| ->pComData->jointStereoData.store_dmx_re_prev_e), | |
| 1); | |
| } /* if ( ((elFlags & AC_EL_USAC_CP_POSSIBLE).... */ | |
| } /* if (pAacDecoderChannelInfo[L]->pDynData->RawDataInfo.CommonWindow)*/ | |
| /* apply intensity stereo */ /* modifies pAacDecoderChannelInfo[]->aSpecSfb | |
| */ | |
| if (!(flags & (AC_USAC | AC_RSVD50 | AC_RSV603DA))) { | |
| if ((pAacDecoderChannelInfo[L]->pDynData->RawDataInfo.CommonWindow == | |
| 1) && | |
| (el_channels == 2)) { | |
| CJointStereo_ApplyIS( | |
| pAacDecoderChannelInfo, | |
| GetScaleFactorBandOffsets(&pAacDecoderChannelInfo[L]->icsInfo, | |
| pSamplingRateInfo), | |
| GetWindowGroupLengthTable(&pAacDecoderChannelInfo[L]->icsInfo), | |
| GetWindowGroups(&pAacDecoderChannelInfo[L]->icsInfo), | |
| GetScaleFactorBandsTransmitted( | |
| &pAacDecoderChannelInfo[L]->icsInfo)); | |
| } | |
| } | |
| } /* maybe_stereo */ | |
| for (ch = 0; ch < el_channels; ch++) { | |
| if (pAacDecoderChannelInfo[ch]->renderMode == AACDEC_RENDER_LPD) { | |
| /* Decode LPD data */ | |
| CLpdChannelStream_Decode(pAacDecoderChannelInfo[ch], | |
| pAacDecoderStaticChannelInfo[ch], flags); | |
| } else { | |
| UCHAR noSfbs = | |
| GetScaleFactorBandsTransmitted(&pAacDecoderChannelInfo[ch]->icsInfo); | |
| /* For USAC common window: max_sfb of both channels may differ | |
| * (common_max_sfb == 0). */ | |
| if ((maybe_jstereo == 1) && | |
| (pAacDecoderChannelInfo[L]->pDynData->RawDataInfo.CommonWindow == | |
| 1)) { | |
| noSfbs = fMax(maxSfBandsL, maxSfBandsR); | |
| } | |
| int CP_active = 0; | |
| if (elFlags & AC_EL_USAC_CP_POSSIBLE) { | |
| CP_active = pAacDecoderChannelInfo[ch] | |
| ->pComData->jointStereoData.cplx_pred_flag; | |
| } | |
| /* Omit writing of pAacDecoderChannelInfo[ch]->specScale for complex | |
| stereo prediction since scaling has already been carried out. */ | |
| int max_sfb_ste = (INT)(pAacDecoderChannelInfo[L]->icsInfo.max_sfb_ste); | |
| if (!(CP_active && (max_sfb_ste == noSfbs)) || | |
| !(CP_active && | |
| !(pAacDecoderChannelInfo[ch]->pDynData->TnsData.Active)) || | |
| ((flags & (AC_USAC | AC_RSVD50 | AC_RSV603DA)) && | |
| (pAacDecoderChannelInfo[L]->pDynData->specificTo.usac.tns_on_lr == | |
| 0))) { | |
| CBlock_ScaleSpectralData(pAacDecoderChannelInfo[ch], noSfbs, | |
| pSamplingRateInfo); | |
| /*Active for the case of TNS applied before MS/CP*/ | |
| if ((flags & (AC_USAC | AC_RSVD50 | AC_RSV603DA)) && | |
| (pAacDecoderChannelInfo[L]->pDynData->specificTo.usac.tns_on_lr == | |
| 0)) { | |
| if (IsLongBlock(&pAacDecoderChannelInfo[ch]->icsInfo)) { | |
| for (int i = 0; i < noSfbs; i++) { | |
| pAacDecoderChannelInfo[ch]->pDynData->aSfbScale[i] = | |
| pAacDecoderChannelInfo[ch]->specScale[0]; | |
| } | |
| } else { | |
| for (int i = 0; i < 8; i++) { | |
| for (int j = 0; j < noSfbs; j++) { | |
| pAacDecoderChannelInfo[ch]->pDynData->aSfbScale[i * 16 + j] = | |
| pAacDecoderChannelInfo[ch]->specScale[i]; | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } /* End "for (ch = 0; ch < el_channels; ch++)" */ | |
| if (maybe_jstereo) { | |
| /* apply ms */ | |
| if (pAacDecoderChannelInfo[L]->pDynData->RawDataInfo.CommonWindow) { | |
| } /* CommonWindow */ | |
| else { | |
| if (elFlags & AC_EL_USAC_CP_POSSIBLE) { | |
| FDKmemclear( | |
| pAacDecoderStaticChannelInfo[L] | |
| ->pCpeStaticData->jointStereoPersistentData.alpha_q_re_prev, | |
| JointStereoMaximumGroups * JointStereoMaximumBands * sizeof(SHORT)); | |
| FDKmemclear( | |
| pAacDecoderStaticChannelInfo[L] | |
| ->pCpeStaticData->jointStereoPersistentData.alpha_q_im_prev, | |
| JointStereoMaximumGroups * JointStereoMaximumBands * sizeof(SHORT)); | |
| } | |
| } | |
| } /* if (maybe_jstereo) */ | |
| for (ch = 0; ch < el_channels; ch++) { | |
| if (pAacDecoderChannelInfo[ch]->renderMode == AACDEC_RENDER_LPD) { | |
| } else { | |
| if (!(flags & (AC_USAC | AC_RSVD50 | AC_RSV603DA))) { | |
| /* Use same seed for coupled channels (CPE) */ | |
| int pnsCh = (ch > 0) ? L : ch; | |
| CPns_UpdateNoiseState( | |
| &pAacDecoderChannelInfo[ch]->data.aac.PnsData, | |
| pAacDecoderChannelInfo[pnsCh]->data.aac.PnsData.currentSeed, | |
| pAacDecoderChannelInfo[ch]->pComData->pnsRandomSeed); | |
| } | |
| if ((!(flags & (AC_USAC))) || | |
| ((flags & (AC_USAC)) && | |
| (pAacDecoderChannelInfo[L]->pDynData->specificTo.usac.tns_active == | |
| 1)) || | |
| (maybe_jstereo == 0)) { | |
| ApplyTools( | |
| pAacDecoderChannelInfo, pSamplingRateInfo, flags, elFlags, ch, | |
| pAacDecoderChannelInfo[L]->pDynData->RawDataInfo.CommonWindow); | |
| } | |
| } /* End "} else" */ | |
| } /* End "for (ch = 0; ch < el_channels; ch++)" */ | |
| if (maybe_jstereo) { | |
| /* apply ms */ | |
| if (pAacDecoderChannelInfo[L]->pDynData->RawDataInfo.CommonWindow) { | |
| /* if tns_on_lr == 0 run MS */ | |
| if ((flags & (AC_USAC | AC_RSVD50 | AC_RSV603DA)) && | |
| (pAacDecoderChannelInfo[L]->pDynData->specificTo.usac.tns_on_lr == | |
| 0)) { | |
| int max_sfb_ste = (INT)(pAacDecoderChannelInfo[L]->icsInfo.max_sfb_ste); | |
| CJointStereo_ApplyMS( | |
| pAacDecoderChannelInfo, pAacDecoderStaticChannelInfo, | |
| pAacDecoderChannelInfo[L]->pSpectralCoefficient, | |
| pAacDecoderChannelInfo[R]->pSpectralCoefficient, | |
| pAacDecoderChannelInfo[L]->pDynData->aSfbScale, | |
| pAacDecoderChannelInfo[R]->pDynData->aSfbScale, | |
| pAacDecoderChannelInfo[L]->specScale, | |
| pAacDecoderChannelInfo[R]->specScale, | |
| GetScaleFactorBandOffsets(&pAacDecoderChannelInfo[L]->icsInfo, | |
| pSamplingRateInfo), | |
| GetWindowGroupLengthTable(&pAacDecoderChannelInfo[L]->icsInfo), | |
| GetWindowGroups(&pAacDecoderChannelInfo[L]->icsInfo), max_sfb_ste, | |
| maxSfBandsL, maxSfBandsR, | |
| pAacDecoderChannelInfo[L] | |
| ->pComData->jointStereoData.store_dmx_re_prev, | |
| &(pAacDecoderChannelInfo[L] | |
| ->pComData->jointStereoData.store_dmx_re_prev_e), | |
| 1); | |
| } | |
| } /* if (pAacDecoderChannelInfo[L]->pDynData->RawDataInfo.CommonWindow) */ | |
| } /* if (maybe_jstereo) */ | |
| for (ch = 0; ch < el_channels; ch++) { | |
| if (elFlags & AC_EL_USAC_CP_POSSIBLE) { | |
| pAacDecoderStaticChannelInfo[L] | |
| ->pCpeStaticData->jointStereoPersistentData.clearSpectralCoeffs = 0; | |
| } | |
| } | |
| CRvlc_ElementCheck(pAacDecoderChannelInfo, pAacDecoderStaticChannelInfo, | |
| flags, el_channels); | |
| } | |
| void CChannel_CodebookTableInit( | |
| CAacDecoderChannelInfo *pAacDecoderChannelInfo) { | |
| int b, w, maxBands, maxWindows; | |
| int maxSfb = GetScaleFactorBandsTransmitted(&pAacDecoderChannelInfo->icsInfo); | |
| UCHAR *pCodeBook = pAacDecoderChannelInfo->pDynData->aCodeBook; | |
| if (IsLongBlock(&pAacDecoderChannelInfo->icsInfo)) { | |
| maxBands = 64; | |
| maxWindows = 1; | |
| } else { | |
| maxBands = 16; | |
| maxWindows = 8; | |
| } | |
| for (w = 0; w < maxWindows; w++) { | |
| for (b = 0; b < maxSfb; b++) { | |
| pCodeBook[b] = ESCBOOK; | |
| } | |
| for (; b < maxBands; b++) { | |
| pCodeBook[b] = ZERO_HCB; | |
| } | |
| pCodeBook += maxBands; | |
| } | |
| } | |
| /* | |
| * Arbitrary order bitstream parser | |
| */ | |
| AAC_DECODER_ERROR CChannelElement_Read( | |
| HANDLE_FDK_BITSTREAM hBs, CAacDecoderChannelInfo *pAacDecoderChannelInfo[], | |
| CAacDecoderStaticChannelInfo *pAacDecoderStaticChannelInfo[], | |
| const AUDIO_OBJECT_TYPE aot, SamplingRateInfo *pSamplingRateInfo, | |
| const UINT flags, const UINT elFlags, const UINT frame_length, | |
| const UCHAR numberOfChannels, const SCHAR epConfig, | |
| HANDLE_TRANSPORTDEC pTpDec) { | |
| AAC_DECODER_ERROR error = AAC_DEC_OK; | |
| const element_list_t *list; | |
| int i, ch, decision_bit; | |
| int crcReg1 = -1, crcReg2 = -1; | |
| int cplxPred; | |
| int ind_sw_cce_flag = 0, num_gain_element_lists = 0; | |
| FDK_ASSERT((numberOfChannels == 1) || (numberOfChannels == 2)); | |
| /* Get channel element sequence table */ | |
| list = getBitstreamElementList(aot, epConfig, numberOfChannels, 0, elFlags); | |
| if (list == NULL) { | |
| error = AAC_DEC_UNSUPPORTED_FORMAT; | |
| goto bail; | |
| } | |
| CTns_Reset(&pAacDecoderChannelInfo[0]->pDynData->TnsData); | |
| /* Set common window to 0 by default. If signalized in the bit stream it will | |
| * be overwritten later explicitely */ | |
| pAacDecoderChannelInfo[0]->pDynData->RawDataInfo.CommonWindow = 0; | |
| if (flags & (AC_USAC | AC_RSVD50 | AC_RSV603DA)) { | |
| pAacDecoderChannelInfo[0]->pDynData->specificTo.usac.tns_active = 0; | |
| pAacDecoderChannelInfo[0]->pDynData->specificTo.usac.tns_on_lr = 0; | |
| } | |
| if (numberOfChannels == 2) { | |
| CTns_Reset(&pAacDecoderChannelInfo[1]->pDynData->TnsData); | |
| pAacDecoderChannelInfo[1]->pDynData->RawDataInfo.CommonWindow = 0; | |
| } | |
| cplxPred = 0; | |
| if (pAacDecoderStaticChannelInfo != NULL) { | |
| if (elFlags & AC_EL_USAC_CP_POSSIBLE) { | |
| pAacDecoderChannelInfo[0]->pComData->jointStereoData.cplx_pred_flag = 0; | |
| cplxPred = 1; | |
| } | |
| } | |
| if (0 || (flags & (AC_ELD | AC_SCALABLE))) { | |
| pAacDecoderChannelInfo[0]->pDynData->RawDataInfo.CommonWindow = 1; | |
| if (numberOfChannels == 2) { | |
| pAacDecoderChannelInfo[1]->pDynData->RawDataInfo.CommonWindow = | |
| pAacDecoderChannelInfo[0]->pDynData->RawDataInfo.CommonWindow; | |
| } | |
| } | |
| /* Iterate through sequence table */ | |
| i = 0; | |
| ch = 0; | |
| decision_bit = 0; | |
| do { | |
| switch (list->id[i]) { | |
| case element_instance_tag: | |
| pAacDecoderChannelInfo[0]->ElementInstanceTag = FDKreadBits(hBs, 4); | |
| if (numberOfChannels == 2) { | |
| pAacDecoderChannelInfo[1]->ElementInstanceTag = | |
| pAacDecoderChannelInfo[0]->ElementInstanceTag; | |
| } | |
| break; | |
| case common_window: | |
| decision_bit = | |
| pAacDecoderChannelInfo[ch]->pDynData->RawDataInfo.CommonWindow = | |
| FDKreadBits(hBs, 1); | |
| if (numberOfChannels == 2) { | |
| pAacDecoderChannelInfo[1]->pDynData->RawDataInfo.CommonWindow = | |
| pAacDecoderChannelInfo[0]->pDynData->RawDataInfo.CommonWindow; | |
| } | |
| break; | |
| case ics_info: | |
| /* store last window sequence (utilized in complex stereo prediction) | |
| * before reading new channel-info */ | |
| if (cplxPred) { | |
| if (pAacDecoderChannelInfo[0]->pDynData->RawDataInfo.CommonWindow) { | |
| pAacDecoderStaticChannelInfo[0] | |
| ->pCpeStaticData->jointStereoPersistentData.winSeqPrev = | |
| pAacDecoderChannelInfo[0]->icsInfo.WindowSequence; | |
| pAacDecoderStaticChannelInfo[0] | |
| ->pCpeStaticData->jointStereoPersistentData.winShapePrev = | |
| pAacDecoderChannelInfo[0]->icsInfo.WindowShape; | |
| } | |
| } | |
| /* Read individual channel info */ | |
| error = IcsRead(hBs, &pAacDecoderChannelInfo[ch]->icsInfo, | |
| pSamplingRateInfo, flags); | |
| if (elFlags & AC_EL_LFE && | |
| GetWindowSequence(&pAacDecoderChannelInfo[ch]->icsInfo) != | |
| BLOCK_LONG) { | |
| error = AAC_DEC_PARSE_ERROR; | |
| break; | |
| } | |
| if (numberOfChannels == 2 && | |
| pAacDecoderChannelInfo[0]->pDynData->RawDataInfo.CommonWindow) { | |
| pAacDecoderChannelInfo[1]->icsInfo = | |
| pAacDecoderChannelInfo[0]->icsInfo; | |
| } | |
| break; | |
| case common_max_sfb: | |
| if (FDKreadBit(hBs) == 0) { | |
| error = IcsReadMaxSfb(hBs, &pAacDecoderChannelInfo[1]->icsInfo, | |
| pSamplingRateInfo); | |
| } | |
| break; | |
| case ltp_data_present: | |
| if (FDKreadBits(hBs, 1) != 0) { | |
| error = AAC_DEC_UNSUPPORTED_PREDICTION; | |
| } | |
| break; | |
| case ms: | |
| INT max_sfb_ste; | |
| INT max_sfb_ste_clear; | |
| max_sfb_ste = GetScaleMaxFactorBandsTransmitted( | |
| &pAacDecoderChannelInfo[0]->icsInfo, | |
| &pAacDecoderChannelInfo[1]->icsInfo); | |
| max_sfb_ste_clear = 64; | |
| pAacDecoderChannelInfo[0]->icsInfo.max_sfb_ste = (UCHAR)max_sfb_ste; | |
| pAacDecoderChannelInfo[1]->icsInfo.max_sfb_ste = (UCHAR)max_sfb_ste; | |
| if (flags & (AC_USAC | AC_RSV603DA) && | |
| pAacDecoderChannelInfo[ch]->pDynData->RawDataInfo.CommonWindow == | |
| 0) { | |
| Clean_Complex_Prediction_coefficients( | |
| &pAacDecoderStaticChannelInfo[0] | |
| ->pCpeStaticData->jointStereoPersistentData, | |
| GetWindowGroups(&pAacDecoderChannelInfo[0]->icsInfo), 0, 64); | |
| } | |
| if (CJointStereo_Read( | |
| hBs, &pAacDecoderChannelInfo[0]->pComData->jointStereoData, | |
| GetWindowGroups(&pAacDecoderChannelInfo[0]->icsInfo), | |
| max_sfb_ste, max_sfb_ste_clear, | |
| /* jointStereoPersistentData and cplxPredictionData are only | |
| available/allocated if cplxPred is active. */ | |
| ((cplxPred == 0) || (pAacDecoderStaticChannelInfo == NULL)) | |
| ? NULL | |
| : &pAacDecoderStaticChannelInfo[0] | |
| ->pCpeStaticData->jointStereoPersistentData, | |
| ((cplxPred == 0) || (pAacDecoderChannelInfo[0] == NULL)) | |
| ? NULL | |
| : pAacDecoderChannelInfo[0] | |
| ->pComStaticData->cplxPredictionData, | |
| cplxPred, | |
| GetScaleFactorBandsTotal(&pAacDecoderChannelInfo[0]->icsInfo), | |
| GetWindowSequence(&pAacDecoderChannelInfo[0]->icsInfo), | |
| flags)) { | |
| error = AAC_DEC_PARSE_ERROR; | |
| } | |
| break; | |
| case global_gain: | |
| pAacDecoderChannelInfo[ch]->pDynData->RawDataInfo.GlobalGain = | |
| (UCHAR)FDKreadBits(hBs, 8); | |
| break; | |
| case section_data: | |
| error = CBlock_ReadSectionData(hBs, pAacDecoderChannelInfo[ch], | |
| pSamplingRateInfo, flags); | |
| break; | |
| case scale_factor_data_usac: | |
| pAacDecoderChannelInfo[ch]->currAliasingSymmetry = 0; | |
| /* Set active sfb codebook indexes to HCB_ESC to make them "active" */ | |
| CChannel_CodebookTableInit( | |
| pAacDecoderChannelInfo[ch]); /* equals ReadSectionData(self, | |
| bs) in float soft. block.c | |
| line: ~599 */ | |
| /* Note: The missing "break" is intentional here, since we need to call | |
| * CBlock_ReadScaleFactorData(). */ | |
| FDK_FALLTHROUGH; | |
| case scale_factor_data: | |
| if (flags & AC_ER_RVLC) { | |
| /* read RVLC data from bitstream (error sens. cat. 1) */ | |
| CRvlc_Read(pAacDecoderChannelInfo[ch], hBs); | |
| } else { | |
| error = CBlock_ReadScaleFactorData(pAacDecoderChannelInfo[ch], hBs, | |
| flags); | |
| } | |
| break; | |
| case pulse: | |
| if (CPulseData_Read( | |
| hBs, | |
| &pAacDecoderChannelInfo[ch]->pDynData->specificTo.aac.PulseData, | |
| pSamplingRateInfo->ScaleFactorBands_Long, /* pulse data is only | |
| allowed to be | |
| present in long | |
| blocks! */ | |
| (void *)&pAacDecoderChannelInfo[ch]->icsInfo, | |
| frame_length) != 0) { | |
| error = AAC_DEC_DECODE_FRAME_ERROR; | |
| } | |
| break; | |
| case tns_data_present: | |
| CTns_ReadDataPresentFlag( | |
| hBs, &pAacDecoderChannelInfo[ch]->pDynData->TnsData); | |
| if (elFlags & AC_EL_LFE && | |
| pAacDecoderChannelInfo[ch]->pDynData->TnsData.DataPresent) { | |
| error = AAC_DEC_PARSE_ERROR; | |
| } | |
| break; | |
| case tns_data: | |
| /* tns_data_present is checked inside CTns_Read(). */ | |
| error = CTns_Read(hBs, &pAacDecoderChannelInfo[ch]->pDynData->TnsData, | |
| &pAacDecoderChannelInfo[ch]->icsInfo, flags); | |
| break; | |
| case gain_control_data: | |
| break; | |
| case gain_control_data_present: | |
| if (FDKreadBits(hBs, 1)) { | |
| error = AAC_DEC_UNSUPPORTED_GAIN_CONTROL_DATA; | |
| } | |
| break; | |
| case tw_data: | |
| break; | |
| case common_tw: | |
| break; | |
| case tns_data_present_usac: | |
| if (pAacDecoderChannelInfo[0]->pDynData->specificTo.usac.tns_active) { | |
| CTns_ReadDataPresentUsac( | |
| hBs, &pAacDecoderChannelInfo[0]->pDynData->TnsData, | |
| &pAacDecoderChannelInfo[1]->pDynData->TnsData, | |
| &pAacDecoderChannelInfo[0]->pDynData->specificTo.usac.tns_on_lr, | |
| &pAacDecoderChannelInfo[0]->icsInfo, flags, elFlags, | |
| pAacDecoderChannelInfo[0]->pDynData->RawDataInfo.CommonWindow); | |
| } else { | |
| pAacDecoderChannelInfo[0]->pDynData->specificTo.usac.tns_on_lr = | |
| (UCHAR)1; | |
| } | |
| break; | |
| case core_mode: | |
| decision_bit = FDKreadBits(hBs, 1); | |
| pAacDecoderChannelInfo[ch]->data.usac.core_mode = decision_bit; | |
| if ((ch == 1) && (pAacDecoderChannelInfo[0]->data.usac.core_mode != | |
| pAacDecoderChannelInfo[1]->data.usac.core_mode)) { | |
| /* StereoCoreToolInfo(core_mode[ch] ) */ | |
| pAacDecoderChannelInfo[0]->pDynData->RawDataInfo.CommonWindow = 0; | |
| pAacDecoderChannelInfo[1]->pDynData->RawDataInfo.CommonWindow = 0; | |
| } | |
| break; | |
| case tns_active: | |
| pAacDecoderChannelInfo[0]->pDynData->specificTo.usac.tns_active = | |
| FDKreadBit(hBs); | |
| break; | |
| case noise: | |
| if (elFlags & AC_EL_USAC_NOISE) { | |
| pAacDecoderChannelInfo[ch] | |
| ->pDynData->specificTo.usac.fd_noise_level_and_offset = | |
| FDKreadBits(hBs, 3 + 5); /* Noise level */ | |
| } | |
| break; | |
| case lpd_channel_stream: | |
| { | |
| error = CLpdChannelStream_Read(/* = lpd_channel_stream() */ | |
| hBs, pAacDecoderChannelInfo[ch], | |
| pAacDecoderStaticChannelInfo[ch], | |
| pSamplingRateInfo, flags); | |
| } | |
| pAacDecoderChannelInfo[ch]->renderMode = AACDEC_RENDER_LPD; | |
| break; | |
| case fac_data: { | |
| int fFacDatPresent = FDKreadBit(hBs); | |
| /* Wee need a valid fac_data[0] even if no FAC data is present (as | |
| * temporal buffer) */ | |
| pAacDecoderChannelInfo[ch]->data.usac.fac_data[0] = | |
| pAacDecoderChannelInfo[ch]->data.usac.fac_data0; | |
| if (fFacDatPresent) { | |
| if (elFlags & AC_EL_LFE) { | |
| error = AAC_DEC_PARSE_ERROR; | |
| break; | |
| } | |
| /* FAC data present, this frame is FD, so the last mode had to be | |
| * ACELP. */ | |
| if (pAacDecoderStaticChannelInfo[ch]->last_core_mode != LPD || | |
| pAacDecoderStaticChannelInfo[ch]->last_lpd_mode != 0) { | |
| pAacDecoderChannelInfo[ch]->data.usac.core_mode_last = LPD; | |
| pAacDecoderChannelInfo[ch]->data.usac.lpd_mode_last = 0; | |
| /* We can't change the past! So look to the future and go ahead! */ | |
| } | |
| CLpd_FAC_Read(hBs, pAacDecoderChannelInfo[ch]->data.usac.fac_data[0], | |
| pAacDecoderChannelInfo[ch]->data.usac.fac_data_e, | |
| CLpd_FAC_getLength( | |
| IsLongBlock(&pAacDecoderChannelInfo[ch]->icsInfo), | |
| pAacDecoderChannelInfo[ch]->granuleLength), | |
| 1, 0); | |
| } else { | |
| if (pAacDecoderStaticChannelInfo[ch]->last_core_mode == LPD && | |
| pAacDecoderStaticChannelInfo[ch]->last_lpd_mode == 0) { | |
| /* ACELP to FD transitons without FAC are possible. That is why we | |
| zero it out (i.e FAC will not be considered in the subsequent | |
| calculations */ | |
| FDKmemclear(pAacDecoderChannelInfo[ch]->data.usac.fac_data0, | |
| LFAC * sizeof(FIXP_DBL)); | |
| } | |
| } | |
| } break; | |
| case esc2_rvlc: | |
| if (flags & AC_ER_RVLC) { | |
| CRvlc_Decode(pAacDecoderChannelInfo[ch], | |
| pAacDecoderStaticChannelInfo[ch], hBs); | |
| } | |
| break; | |
| case esc1_hcr: | |
| if (flags & AC_ER_HCR) { | |
| CHcr_Read(hBs, pAacDecoderChannelInfo[ch], | |
| numberOfChannels == 2 ? ID_CPE : ID_SCE); | |
| } | |
| break; | |
| case spectral_data: | |
| error = CBlock_ReadSpectralData(hBs, pAacDecoderChannelInfo[ch], | |
| pSamplingRateInfo, flags); | |
| if (flags & AC_ELD) { | |
| pAacDecoderChannelInfo[ch]->renderMode = AACDEC_RENDER_ELDFB; | |
| } else { | |
| if (flags & AC_HDAAC) { | |
| pAacDecoderChannelInfo[ch]->renderMode = AACDEC_RENDER_INTIMDCT; | |
| } else { | |
| pAacDecoderChannelInfo[ch]->renderMode = AACDEC_RENDER_IMDCT; | |
| } | |
| } | |
| break; | |
| case ac_spectral_data: | |
| error = CBlock_ReadAcSpectralData( | |
| hBs, pAacDecoderChannelInfo[ch], pAacDecoderStaticChannelInfo[ch], | |
| pSamplingRateInfo, frame_length, flags); | |
| pAacDecoderChannelInfo[ch]->renderMode = AACDEC_RENDER_IMDCT; | |
| break; | |
| case coupled_elements: { | |
| int num_coupled_elements, c; | |
| ind_sw_cce_flag = FDKreadBit(hBs); | |
| num_coupled_elements = FDKreadBits(hBs, 3); | |
| for (c = 0; c < (num_coupled_elements + 1); c++) { | |
| int cc_target_is_cpe; | |
| num_gain_element_lists++; | |
| cc_target_is_cpe = FDKreadBit(hBs); /* cc_target_is_cpe[c] */ | |
| FDKreadBits(hBs, 4); /* cc_target_tag_select[c] */ | |
| if (cc_target_is_cpe) { | |
| int cc_l, cc_r; | |
| cc_l = FDKreadBit(hBs); /* cc_l[c] */ | |
| cc_r = FDKreadBit(hBs); /* cc_r[c] */ | |
| if (cc_l && cc_r) { | |
| num_gain_element_lists++; | |
| } | |
| } | |
| } | |
| FDKreadBit(hBs); /* cc_domain */ | |
| FDKreadBit(hBs); /* gain_element_sign */ | |
| FDKreadBits(hBs, 2); /* gain_element_scale */ | |
| } break; | |
| case gain_element_lists: { | |
| const CodeBookDescription *hcb; | |
| UCHAR *pCodeBook; | |
| int c; | |
| hcb = &AACcodeBookDescriptionTable[BOOKSCL]; | |
| pCodeBook = pAacDecoderChannelInfo[ch]->pDynData->aCodeBook; | |
| for (c = 1; c < num_gain_element_lists; c++) { | |
| int cge; | |
| if (ind_sw_cce_flag) { | |
| cge = 1; | |
| } else { | |
| cge = FDKreadBits(hBs, 1); /* common_gain_element_present[c] */ | |
| } | |
| if (cge) { | |
| /* Huffman */ | |
| CBlock_DecodeHuffmanWord( | |
| hBs, hcb); /* hcod_sf[common_gain_element[c]] 1..19 */ | |
| } else { | |
| int g, sfb; | |
| for (g = 0; | |
| g < GetWindowGroups(&pAacDecoderChannelInfo[ch]->icsInfo); | |
| g++) { | |
| for (sfb = 0; sfb < GetScaleFactorBandsTransmitted( | |
| &pAacDecoderChannelInfo[ch]->icsInfo); | |
| sfb++) { | |
| if (pCodeBook[sfb] != ZERO_HCB) { | |
| /* Huffman */ | |
| CBlock_DecodeHuffmanWord( | |
| hBs, | |
| hcb); /* hcod_sf[dpcm_gain_element[c][g][sfb]] 1..19 */ | |
| } | |
| } | |
| } | |
| } | |
| } | |
| } break; | |
| /* CRC handling */ | |
| case adtscrc_start_reg1: | |
| if (pTpDec != NULL) { | |
| crcReg1 = transportDec_CrcStartReg(pTpDec, 192); | |
| } | |
| break; | |
| case adtscrc_start_reg2: | |
| if (pTpDec != NULL) { | |
| crcReg2 = transportDec_CrcStartReg(pTpDec, 128); | |
| } | |
| break; | |
| case adtscrc_end_reg1: | |
| case drmcrc_end_reg: | |
| if (pTpDec != NULL) { | |
| transportDec_CrcEndReg(pTpDec, crcReg1); | |
| crcReg1 = -1; | |
| } | |
| break; | |
| case adtscrc_end_reg2: | |
| if (crcReg1 != -1) { | |
| error = AAC_DEC_DECODE_FRAME_ERROR; | |
| } else if (pTpDec != NULL) { | |
| transportDec_CrcEndReg(pTpDec, crcReg2); | |
| crcReg2 = -1; | |
| } | |
| break; | |
| case drmcrc_start_reg: | |
| if (pTpDec != NULL) { | |
| crcReg1 = transportDec_CrcStartReg(pTpDec, 0); | |
| } | |
| break; | |
| /* Non data cases */ | |
| case next_channel: | |
| ch = (ch + 1) % numberOfChannels; | |
| break; | |
| case link_sequence: | |
| list = list->next[decision_bit]; | |
| i = -1; | |
| break; | |
| default: | |
| error = AAC_DEC_UNSUPPORTED_FORMAT; | |
| break; | |
| } | |
| if (error != AAC_DEC_OK) { | |
| goto bail; | |
| } | |
| i++; | |
| } while (list->id[i] != end_of_sequence); | |
| for (ch = 0; ch < numberOfChannels; ch++) { | |
| if (pAacDecoderChannelInfo[ch]->renderMode == AACDEC_RENDER_IMDCT || | |
| pAacDecoderChannelInfo[ch]->renderMode == AACDEC_RENDER_ELDFB) { | |
| /* Shows which bands are empty. */ | |
| UCHAR *band_is_noise = | |
| pAacDecoderChannelInfo[ch]->pDynData->band_is_noise; | |
| FDKmemset(band_is_noise, (UCHAR)1, sizeof(UCHAR) * (8 * 16)); | |
| error = CBlock_InverseQuantizeSpectralData( | |
| pAacDecoderChannelInfo[ch], pSamplingRateInfo, band_is_noise, 1); | |
| if (error != AAC_DEC_OK) { | |
| return error; | |
| } | |
| if (elFlags & AC_EL_USAC_NOISE) { | |
| CBlock_ApplyNoise(pAacDecoderChannelInfo[ch], pSamplingRateInfo, | |
| &pAacDecoderStaticChannelInfo[ch]->nfRandomSeed, | |
| band_is_noise); | |
| } /* if (elFlags & AC_EL_USAC_NOISE) */ | |
| } | |
| } | |
| bail: | |
| if (crcReg1 != -1 || crcReg2 != -1) { | |
| if (error == AAC_DEC_OK) { | |
| error = AAC_DEC_DECODE_FRAME_ERROR; | |
| } | |
| if (crcReg1 != -1) { | |
| transportDec_CrcEndReg(pTpDec, crcReg1); | |
| } | |
| if (crcReg2 != -1) { | |
| transportDec_CrcEndReg(pTpDec, crcReg2); | |
| } | |
| } | |
| return error; | |
| } |