| /* ----------------------------------------------------------------------------- |
| Software License for The Fraunhofer FDK AAC Codec Library for Android |
| |
| © Copyright 1995 - 2018 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) || (CP_active && (max_sfb_ste < noSfbs)) || |
| ((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; |
| } |
