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Diffstat (limited to 'libSBRenc/src/mh_det.cpp')
| -rw-r--r-- | libSBRenc/src/mh_det.cpp | 1451 |
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diff --git a/libSBRenc/src/mh_det.cpp b/libSBRenc/src/mh_det.cpp deleted file mode 100644 index 73d1b8b..0000000 --- a/libSBRenc/src/mh_det.cpp +++ /dev/null @@ -1,1451 +0,0 @@ - -/* ----------------------------------------------------------------------------------------------------------- -Software License for The Fraunhofer FDK AAC Codec Library for Android - -© Copyright 1995 - 2013 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 ------------------------------------------------------------------------------------------------------------ */ - -#include "mh_det.h" - -#include "sbr_ram.h" -#include "sbr_misc.h" - - -#include "genericStds.h" - -#define SFM_SHIFT 2 /* Attention: SFM_SCALE depends on SFM_SHIFT */ -#define SFM_SCALE (MAXVAL_DBL >> SFM_SHIFT) /* 1.0 >> SFM_SHIFT */ - - -/*!< Detector Parameters for AAC core codec. */ -static const DETECTOR_PARAMETERS_MH paramsAac = { -9, /*!< deltaTime */ -{ -FL2FXCONST_DBL(20.0f*RELAXATION_FLOAT), /*!< thresHoldDiff */ -FL2FXCONST_DBL(1.26f*RELAXATION_FLOAT), /*!< thresHoldDiffGuide */ -FL2FXCONST_DBL(15.0f*RELAXATION_FLOAT), /*!< thresHoldTone */ -FL2FXCONST_DBL((1.0f/15.0f)*RELAXATION_FLOAT), /*!< invThresHoldTone */ -FL2FXCONST_DBL(1.26f*RELAXATION_FLOAT), /*!< thresHoldToneGuide */ -FL2FXCONST_DBL(0.3f)>>SFM_SHIFT, /*!< sfmThresSbr */ -FL2FXCONST_DBL(0.1f)>>SFM_SHIFT, /*!< sfmThresOrig */ -FL2FXCONST_DBL(0.3f), /*!< decayGuideOrig */ -FL2FXCONST_DBL(0.5f), /*!< decayGuideDiff */ -FL2FXCONST_DBL(-0.000112993269), /* LD64(FL2FXCONST_DBL(0.995f)) */ /*!< derivThresMaxLD64 */ -FL2FXCONST_DBL(-0.000112993269), /* LD64(FL2FXCONST_DBL(0.995f)) */ /*!< derivThresBelowLD64 */ -FL2FXCONST_DBL(-0.005030126483f) /* LD64(FL2FXCONST_DBL(0.8f)) */ /*!< derivThresAboveLD64 */ -}, -50 /*!< maxComp */ -}; - -/*!< Detector Parameters for AAC LD core codec. */ -static const DETECTOR_PARAMETERS_MH paramsAacLd = { -16, /*!< Delta time. */ -{ -FL2FXCONST_DBL(25.0f*RELAXATION_FLOAT), /*!< thresHoldDiff */ -FL2FXCONST_DBL(1.26f*RELAXATION_FLOAT), /*!< tresHoldDiffGuide */ -FL2FXCONST_DBL(15.0f*RELAXATION_FLOAT), /*!< thresHoldTone */ -FL2FXCONST_DBL((1.0f/15.0f)*RELAXATION_FLOAT), /*!< invThresHoldTone */ -FL2FXCONST_DBL(1.26f*RELAXATION_FLOAT), /*!< thresHoldToneGuide */ -FL2FXCONST_DBL(0.3f)>>SFM_SHIFT, /*!< sfmThresSbr */ -FL2FXCONST_DBL(0.1f)>>SFM_SHIFT, /*!< sfmThresOrig */ -FL2FXCONST_DBL(0.3f), /*!< decayGuideOrig */ -FL2FXCONST_DBL(0.2f), /*!< decayGuideDiff */ -FL2FXCONST_DBL(-0.000112993269), /* LD64(FL2FXCONST_DBL(0.995f)) */ /*!< derivThresMaxLD64 */ -FL2FXCONST_DBL(-0.000112993269), /* LD64(FL2FXCONST_DBL(0.995f)) */ /*!< derivThresBelowLD64 */ -FL2FXCONST_DBL(-0.005030126483f) /* LD64(FL2FXCONST_DBL(0.8f)) */ /*!< derivThresAboveLD64 */ -}, -50 /*!< maxComp */ -}; - - -/**************************************************************************/ -/*! - \brief Calculates the difference in tonality between original and SBR - for a given time and frequency region. - - The values for pDiffMapped2Scfb are scaled by RELAXATION - - \return none. - -*/ -/**************************************************************************/ -static void diff(FIXP_DBL *RESTRICT pTonalityOrig, - FIXP_DBL *pDiffMapped2Scfb, - const UCHAR *RESTRICT pFreqBandTable, - INT nScfb, - SCHAR *indexVector) -{ - UCHAR i, ll, lu, k; - FIXP_DBL maxValOrig, maxValSbr, tmp; - INT scale; - - for(i=0; i < nScfb; i++){ - ll = pFreqBandTable[i]; - lu = pFreqBandTable[i+1]; - - maxValOrig = FL2FXCONST_DBL(0.0f); - maxValSbr = FL2FXCONST_DBL(0.0f); - - for(k=ll;k<lu;k++){ - maxValOrig = fixMax(maxValOrig, pTonalityOrig[k]); - maxValSbr = fixMax(maxValSbr, pTonalityOrig[indexVector[k]]); - } - - if ((maxValSbr >= RELAXATION)) { - tmp = fDivNorm(maxValOrig, maxValSbr, &scale); - pDiffMapped2Scfb[i] = scaleValue(fMult(tmp,RELAXATION_FRACT), fixMax(-(DFRACT_BITS-1),(scale-RELAXATION_SHIFT))); - } - else { - pDiffMapped2Scfb[i] = maxValOrig; - } - } -} - - -/**************************************************************************/ -/*! - \brief Calculates a flatness measure of the tonality measures. - - Calculation of the power function and using scalefactor for basis: - Using log2: - z = (2^k * x)^y; - z' = CalcLd(z) = y*CalcLd(x) + y*k; - z = CalcInvLd(z'); - - Using ld64: - z = (2^k * x)^y; - z' = CalcLd64(z) = y*CalcLd64(x)/64 + y*k/64; - z = CalcInvLd64(z'); - - The values pSfmOrigVec and pSfmSbrVec are scaled by the factor 1/4.0 - - \return none. - -*/ -/**************************************************************************/ -static void calculateFlatnessMeasure(FIXP_DBL *pQuotaBuffer, - SCHAR *indexVector, - FIXP_DBL *pSfmOrigVec, - FIXP_DBL *pSfmSbrVec, - const UCHAR *pFreqBandTable, - INT nSfb) -{ - INT i,j; - FIXP_DBL invBands,tmp1,tmp2; - INT shiftFac0,shiftFacSum0; - INT shiftFac1,shiftFacSum1; - FIXP_DBL accu; - - for(i=0;i<nSfb;i++) - { - INT ll = pFreqBandTable[i]; - INT lu = pFreqBandTable[i+1]; - pSfmOrigVec[i] = (FIXP_DBL)(MAXVAL_DBL>>2); - pSfmSbrVec[i] = (FIXP_DBL)(MAXVAL_DBL>>2); - - if(lu - ll > 1){ - FIXP_DBL amOrig,amTransp,gmOrig,gmTransp,sfmOrig,sfmTransp; - invBands = GetInvInt(lu-ll); - shiftFacSum0 = 0; - shiftFacSum1 = 0; - amOrig = amTransp = FL2FXCONST_DBL(0.0f); - gmOrig = gmTransp = (FIXP_DBL)MAXVAL_DBL; - - for(j= ll; j<lu; j++) { - sfmOrig = pQuotaBuffer[j]; - sfmTransp = pQuotaBuffer[indexVector[j]]; - - amOrig += fMult(sfmOrig, invBands); - amTransp += fMult(sfmTransp, invBands); - - shiftFac0 = CountLeadingBits(sfmOrig); - shiftFac1 = CountLeadingBits(sfmTransp); - - gmOrig = fMult(gmOrig, sfmOrig<<shiftFac0); - gmTransp = fMult(gmTransp, sfmTransp<<shiftFac1); - - shiftFacSum0 += shiftFac0; - shiftFacSum1 += shiftFac1; - } - - if (gmOrig > FL2FXCONST_DBL(0.0f)) { - - tmp1 = CalcLdData(gmOrig); /* CalcLd64(x)/64 */ - tmp1 = fMult(invBands, tmp1); /* y*CalcLd64(x)/64 */ - - /* y*k/64 */ - accu = (FIXP_DBL)-shiftFacSum0 << (DFRACT_BITS-1-8); - tmp2 = fMultDiv2(invBands, accu) << (2+1); - - tmp2 = tmp1 + tmp2; /* y*CalcLd64(x)/64 + y*k/64 */ - gmOrig = CalcInvLdData(tmp2); /* CalcInvLd64(z'); */ - } - else { - gmOrig = FL2FXCONST_DBL(0.0f); - } - - if (gmTransp > FL2FXCONST_DBL(0.0f)) { - - tmp1 = CalcLdData(gmTransp); /* CalcLd64(x)/64 */ - tmp1 = fMult(invBands, tmp1); /* y*CalcLd64(x)/64 */ - - /* y*k/64 */ - accu = (FIXP_DBL)-shiftFacSum1 << (DFRACT_BITS-1-8); - tmp2 = fMultDiv2(invBands, accu) << (2+1); - - tmp2 = tmp1 + tmp2; /* y*CalcLd64(x)/64 + y*k/64 */ - gmTransp = CalcInvLdData(tmp2); /* CalcInvLd64(z'); */ - } - else { - gmTransp = FL2FXCONST_DBL(0.0f); - } - if ( amOrig != FL2FXCONST_DBL(0.0f) ) - pSfmOrigVec[i] = FDKsbrEnc_LSI_divide_scale_fract(gmOrig,amOrig,SFM_SCALE); - - if ( amTransp != FL2FXCONST_DBL(0.0f) ) - pSfmSbrVec[i] = FDKsbrEnc_LSI_divide_scale_fract(gmTransp,amTransp,SFM_SCALE); - } - } -} - -/**************************************************************************/ -/*! - \brief Calculates the input to the missing harmonics detection. - - - \return none. - -*/ -/**************************************************************************/ -static void calculateDetectorInput(FIXP_DBL **RESTRICT pQuotaBuffer, /*!< Pointer to tonality matrix. */ - SCHAR *RESTRICT indexVector, - FIXP_DBL **RESTRICT tonalityDiff, - FIXP_DBL **RESTRICT pSfmOrig, - FIXP_DBL **RESTRICT pSfmSbr, - const UCHAR *freqBandTable, - INT nSfb, - INT noEstPerFrame, - INT move) -{ - INT est; - - /* - New estimate. - */ - for (est=0; est < noEstPerFrame; est++) { - - diff(pQuotaBuffer[est+move], - tonalityDiff[est+move], - freqBandTable, - nSfb, - indexVector); - - calculateFlatnessMeasure(pQuotaBuffer[est+ move], - indexVector, - pSfmOrig[est + move], - pSfmSbr[est + move], - freqBandTable, - nSfb); - } -} - - -/**************************************************************************/ -/*! - \brief Checks that the detection is not due to a LP filter - - This function determines if a newly detected missing harmonics is not - in fact just a low-pass filtere input signal. If so, the detection is - removed. - - \return none. - -*/ -/**************************************************************************/ -static void removeLowPassDetection(UCHAR *RESTRICT pAddHarmSfb, - UCHAR **RESTRICT pDetectionVectors, - INT start, - INT stop, - INT nSfb, - const UCHAR *RESTRICT pFreqBandTable, - FIXP_DBL *RESTRICT pNrgVector, - THRES_HOLDS mhThresh) - -{ - INT i,est; - INT maxDerivPos = pFreqBandTable[nSfb]; - INT numBands = pFreqBandTable[nSfb]; - FIXP_DBL nrgLow,nrgHigh; - FIXP_DBL nrgLD64,nrgLowLD64,nrgHighLD64,nrgDiffLD64; - FIXP_DBL valLD64,maxValLD64,maxValAboveLD64; - INT bLPsignal = 0; - - maxValLD64 = FL2FXCONST_DBL(-1.0f); - for(i = numBands - 1 - 2; i > pFreqBandTable[0];i--){ - nrgLow = pNrgVector[i]; - nrgHigh = pNrgVector[i + 2]; - - if(nrgLow != FL2FXCONST_DBL(0.0f) && nrgLow > nrgHigh){ - nrgLowLD64 = CalcLdData(nrgLow>>1); - nrgDiffLD64 = CalcLdData((nrgLow>>1)-(nrgHigh>>1)); - valLD64 = nrgDiffLD64-nrgLowLD64; - if(valLD64 > maxValLD64){ - maxDerivPos = i; - maxValLD64 = valLD64; - } - if(maxValLD64 > mhThresh.derivThresMaxLD64) { - break; - } - } - } - - /* Find the largest "gradient" above. (should be relatively flat, hence we expect a low value - if the signal is LP.*/ - maxValAboveLD64 = FL2FXCONST_DBL(-1.0f); - for(i = numBands - 1 - 2; i > maxDerivPos + 2;i--){ - nrgLow = pNrgVector[i]; - nrgHigh = pNrgVector[i + 2]; - - if(nrgLow != FL2FXCONST_DBL(0.0f) && nrgLow > nrgHigh){ - nrgLowLD64 = CalcLdData(nrgLow>>1); - nrgDiffLD64 = CalcLdData((nrgLow>>1)-(nrgHigh>>1)); - valLD64 = nrgDiffLD64-nrgLowLD64; - if(valLD64 > maxValAboveLD64){ - maxValAboveLD64 = valLD64; - } - } - else { - if(nrgHigh != FL2FXCONST_DBL(0.0f) && nrgHigh > nrgLow){ - nrgHighLD64 = CalcLdData(nrgHigh>>1); - nrgDiffLD64 = CalcLdData((nrgHigh>>1)-(nrgLow>>1)); - valLD64 = nrgDiffLD64-nrgHighLD64; - if(valLD64 > maxValAboveLD64){ - maxValAboveLD64 = valLD64; - } - } - } - } - - if(maxValLD64 > mhThresh.derivThresMaxLD64 && maxValAboveLD64 < mhThresh.derivThresAboveLD64){ - bLPsignal = 1; - - for(i = maxDerivPos - 1; i > maxDerivPos - 5 && i >= 0 ; i--){ - if(pNrgVector[i] != FL2FXCONST_DBL(0.0f) && pNrgVector[i] > pNrgVector[maxDerivPos + 2]){ - nrgDiffLD64 = CalcLdData((pNrgVector[i]>>1)-(pNrgVector[maxDerivPos + 2]>>1)); - nrgLD64 = CalcLdData(pNrgVector[i]>>1); - valLD64 = nrgDiffLD64-nrgLD64; - if(valLD64 < mhThresh.derivThresBelowLD64) { - bLPsignal = 0; - break; - } - } - else{ - bLPsignal = 0; - break; - } - } - } - - if(bLPsignal){ - for(i=0;i<nSfb;i++){ - if(maxDerivPos >= pFreqBandTable[i] && maxDerivPos < pFreqBandTable[i+1]) - break; - } - - if(pAddHarmSfb[i]){ - pAddHarmSfb[i] = 0; - for(est = start; est < stop ; est++){ - pDetectionVectors[est][i] = 0; - } - } - } -} - -/**************************************************************************/ -/*! - \brief Checks if it is allowed to detect a missing tone, that wasn't - detected previously. - - - \return newDetectionAllowed flag. - -*/ -/**************************************************************************/ -static INT isDetectionOfNewToneAllowed(const SBR_FRAME_INFO *pFrameInfo, - INT *pDetectionStartPos, - INT noEstPerFrame, - INT prevTransientFrame, - INT prevTransientPos, - INT prevTransientFlag, - INT transientPosOffset, - INT transientFlag, - INT transientPos, - INT deltaTime, - HANDLE_SBR_MISSING_HARMONICS_DETECTOR h_sbrMissingHarmonicsDetector) -{ - INT transientFrame, newDetectionAllowed; - - - /* Determine if this is a frame where a transient starts... - * If the transient flag was set the previous frame but not the - * transient frame flag, the transient frame flag is set in the current frame. - *****************************************************************************/ - transientFrame = 0; - if(transientFlag){ - if(transientPos + transientPosOffset < pFrameInfo->borders[pFrameInfo->nEnvelopes]) - transientFrame = 1; - if(noEstPerFrame > 1){ - if(transientPos + transientPosOffset > h_sbrMissingHarmonicsDetector->timeSlots >> 1){ - *pDetectionStartPos = noEstPerFrame; - } - else{ - *pDetectionStartPos = noEstPerFrame >> 1; - } - - } - else{ - *pDetectionStartPos = noEstPerFrame; - } - } - else{ - if(prevTransientFlag && !prevTransientFrame){ - transientFrame = 1; - *pDetectionStartPos = 0; - } - } - - /* - * Determine if detection of new missing harmonics are allowed. - * If the frame contains a transient it's ok. If the previous - * frame contained a transient it needs to be sufficiently close - * to the start of the current frame. - ****************************************************************/ - newDetectionAllowed = 0; - if(transientFrame){ - newDetectionAllowed = 1; - } - else { - if(prevTransientFrame && - fixp_abs(pFrameInfo->borders[0] - (prevTransientPos + transientPosOffset - - h_sbrMissingHarmonicsDetector->timeSlots)) < deltaTime) - newDetectionAllowed = 1; - *pDetectionStartPos = 0; - } - - h_sbrMissingHarmonicsDetector->previousTransientFlag = transientFlag; - h_sbrMissingHarmonicsDetector->previousTransientFrame = transientFrame; - h_sbrMissingHarmonicsDetector->previousTransientPos = transientPos; - - return (newDetectionAllowed); -} - - -/**************************************************************************/ -/*! - \brief Cleans up the detection after a transient. - - - \return none. - -*/ -/**************************************************************************/ -static void transientCleanUp(FIXP_DBL **quotaBuffer, - INT nSfb, - UCHAR **detectionVectors, - UCHAR *pAddHarmSfb, - UCHAR *pPrevAddHarmSfb, - INT ** signBuffer, - const UCHAR *pFreqBandTable, - INT start, - INT stop, - INT newDetectionAllowed, - FIXP_DBL *pNrgVector, - THRES_HOLDS mhThresh) -{ - INT i,j,li, ui,est; - - for(est=start; est < stop; est++) { - for(i=0; i<nSfb; i++) { - pAddHarmSfb[i] = pAddHarmSfb[i] || detectionVectors[est][i]; - } - } - - if(newDetectionAllowed == 1){ - /* - * Check for duplication of sines located - * on the border of two scf-bands. - *************************************************/ - for(i=0;i<nSfb-1;i++) { - li = pFreqBandTable[i]; - ui = pFreqBandTable[i+1]; - - /* detection in adjacent channels.*/ - if(pAddHarmSfb[i] && pAddHarmSfb[i+1]) { - FIXP_DBL maxVal1, maxVal2; - INT maxPos1, maxPos2, maxPosTime1, maxPosTime2; - - li = pFreqBandTable[i]; - ui = pFreqBandTable[i+1]; - - /* Find maximum tonality in the the two scf bands.*/ - maxPosTime1 = start; - maxPos1 = li; - maxVal1 = quotaBuffer[start][li]; - for(est = start; est < stop; est++){ - for(j = li; j<ui; j++){ - if(quotaBuffer[est][j] > maxVal1){ - maxVal1 = quotaBuffer[est][j]; - maxPos1 = j; - maxPosTime1 = est; - } - } - } - - li = pFreqBandTable[i+1]; - ui = pFreqBandTable[i+2]; - - /* Find maximum tonality in the the two scf bands.*/ - maxPosTime2 = start; - maxPos2 = li; - maxVal2 = quotaBuffer[start][li]; - for(est = start; est < stop; est++){ - for(j = li; j<ui; j++){ - if(quotaBuffer[est][j] > maxVal2){ - maxVal2 = quotaBuffer[est][j]; - maxPos2 = j; - maxPosTime2 = est; - } - } - } - - /* If the maximum values are in adjacent QMF-channels, we need to remove - the lowest of the two.*/ - if(maxPos2-maxPos1 < 2){ - - if(pPrevAddHarmSfb[i] == 1 && pPrevAddHarmSfb[i+1] == 0){ - /* Keep the lower, remove the upper.*/ - pAddHarmSfb[i+1] = 0; - for(est=start; est<stop; est++){ - detectionVectors[est][i+1] = 0; - } - } - else{ - if(pPrevAddHarmSfb[i] == 0 && pPrevAddHarmSfb[i+1] == 1){ - /* Keep the upper, remove the lower.*/ - pAddHarmSfb[i] = 0; - for(est=start; est<stop; est++){ - detectionVectors[est][i] = 0; - } - } - else{ - /* If the maximum values are in adjacent QMF-channels, and if the signs indicate that it is the same sine, - we need to remove the lowest of the two.*/ - if(maxVal1 > maxVal2){ - if(signBuffer[maxPosTime1][maxPos2] < 0 && signBuffer[maxPosTime1][maxPos1] > 0){ - /* Keep the lower, remove the upper.*/ - pAddHarmSfb[i+1] = 0; - for(est=start; est<stop; est++){ - detectionVectors[est][i+1] = 0; - } - } - } - else{ - if(signBuffer[maxPosTime2][maxPos2] < 0 && signBuffer[maxPosTime2][maxPos1] > 0){ - /* Keep the upper, remove the lower.*/ - pAddHarmSfb[i] = 0; - for(est=start; est<stop; est++){ - detectionVectors[est][i] = 0; - } - } - } - } - } - } - } - } - - /* Make sure that the detection is not the cut-off of a low pass filter. */ - removeLowPassDetection(pAddHarmSfb, - detectionVectors, - start, - stop, - nSfb, - pFreqBandTable, - pNrgVector, - mhThresh); - } - else { - /* - * If a missing harmonic wasn't missing the previous frame - * the transient-flag needs to be set in order to be allowed to detect it. - *************************************************************************/ - for(i=0;i<nSfb;i++){ - if(pAddHarmSfb[i] - pPrevAddHarmSfb[i] > 0) - pAddHarmSfb[i] = 0; - } - } -} - - -/**************************************************************************/ -/*! - \brief Do detection for one tonality estimate. - - - \return none. - -*/ -/**************************************************************************/ -static void detection(FIXP_DBL *quotaBuffer, - FIXP_DBL *pDiffVecScfb, - INT nSfb, - UCHAR *pHarmVec, - const UCHAR *pFreqBandTable, - FIXP_DBL *sfmOrig, - FIXP_DBL *sfmSbr, - GUIDE_VECTORS guideVectors, - GUIDE_VECTORS newGuideVectors, - THRES_HOLDS mhThresh) -{ - - INT i,j,ll, lu; - FIXP_DBL thresTemp,thresOrig; - - /* - * Do detection on the difference vector, i.e. the difference between - * the original and the transposed. - *********************************************************************/ - for(i=0;i<nSfb;i++){ - - thresTemp = (guideVectors.guideVectorDiff[i] != FL2FXCONST_DBL(0.0f)) - ? fixMax(fMult(mhThresh.decayGuideDiff,guideVectors.guideVectorDiff[i]), mhThresh.thresHoldDiffGuide) - : mhThresh.thresHoldDiff; - - thresTemp = fixMin(thresTemp, mhThresh.thresHoldDiff); - - if(pDiffVecScfb[i] > thresTemp){ - pHarmVec[i] = 1; - newGuideVectors.guideVectorDiff[i] = pDiffVecScfb[i]; - } - else{ - /* If the guide wasn't zero, but the current level is to low, - start tracking the decay on the tone in the original rather - than the difference.*/ - if(guideVectors.guideVectorDiff[i] != FL2FXCONST_DBL(0.0f)){ - guideVectors.guideVectorOrig[i] = mhThresh.thresHoldToneGuide; - } - } - } - - /* - * Trace tones in the original signal that at one point - * have been detected because they will be replaced by - * multiple tones in the sbr signal. - ****************************************************/ - - for(i=0;i<nSfb;i++){ - ll = pFreqBandTable[i]; - lu = pFreqBandTable[i+1]; - - thresOrig = fixMax(fMult(guideVectors.guideVectorOrig[i], mhThresh.decayGuideOrig), mhThresh.thresHoldToneGuide); - thresOrig = fixMin(thresOrig, mhThresh.thresHoldTone); - - if(guideVectors.guideVectorOrig[i] != FL2FXCONST_DBL(0.0f)){ - for(j= ll;j<lu;j++){ - if(quotaBuffer[j] > thresOrig){ - pHarmVec[i] = 1; - newGuideVectors.guideVectorOrig[i] = quotaBuffer[j]; - } - } - } - } - - /* - * Check for multiple sines in the transposed signal, - * where there is only one in the original. - ****************************************************/ - thresOrig = mhThresh.thresHoldTone; - - for(i=0;i<nSfb;i++){ - ll = pFreqBandTable[i]; - lu = pFreqBandTable[i+1]; - - if(pHarmVec[i] == 0){ - if(lu -ll > 1){ - for(j= ll;j<lu;j++){ - if(quotaBuffer[j] > thresOrig && (sfmSbr[i] > mhThresh.sfmThresSbr && sfmOrig[i] < mhThresh.sfmThresOrig)){ - pHarmVec[i] = 1; - newGuideVectors.guideVectorOrig[i] = quotaBuffer[j]; - } - } - } - else{ - if(i < nSfb -1){ - ll = pFreqBandTable[i]; - - if(i>0){ - if(quotaBuffer[ll] > mhThresh.thresHoldTone && (pDiffVecScfb[i+1] < mhThresh.invThresHoldTone || pDiffVecScfb[i-1] < mhThresh.invThresHoldTone)){ - pHarmVec[i] = 1; - newGuideVectors.guideVectorOrig[i] = quotaBuffer[ll]; - } - } - else{ - if(quotaBuffer[ll] > mhThresh.thresHoldTone && pDiffVecScfb[i+1] < mhThresh.invThresHoldTone){ - pHarmVec[i] = 1; - newGuideVectors.guideVectorOrig[i] = quotaBuffer[ll]; - } - } - } - } - } - } -} - - -/**************************************************************************/ -/*! - \brief Do detection for every tonality estimate, using forward prediction. - - - \return none. - -*/ -/**************************************************************************/ -static void detectionWithPrediction(FIXP_DBL **quotaBuffer, - FIXP_DBL **pDiffVecScfb, - INT ** signBuffer, - INT nSfb, - const UCHAR* pFreqBandTable, - FIXP_DBL **sfmOrig, - FIXP_DBL **sfmSbr, - UCHAR **detectionVectors, - UCHAR *pPrevAddHarmSfb, - GUIDE_VECTORS *guideVectors, - INT noEstPerFrame, - INT detectionStart, - INT totNoEst, - INT newDetectionAllowed, - INT *pAddHarmFlag, - UCHAR *pAddHarmSfb, - FIXP_DBL *pNrgVector, - const DETECTOR_PARAMETERS_MH *mhParams) -{ - INT est = 0,i; - INT start; - - FDKmemclear(pAddHarmSfb,nSfb*sizeof(UCHAR)); - - if(newDetectionAllowed){ - - if(totNoEst > 1){ - start = detectionStart; - - if (start != 0) { - FDKmemcpy(guideVectors[start].guideVectorDiff,guideVectors[0].guideVectorDiff,nSfb*sizeof(FIXP_DBL)); - FDKmemcpy(guideVectors[start].guideVectorOrig,guideVectors[0].guideVectorOrig,nSfb*sizeof(FIXP_DBL)); - FDKmemclear(guideVectors[start-1].guideVectorDetected,nSfb*sizeof(UCHAR)); - } - } - else{ - start = 0; - } - } - else{ - start = 0; - } - - - for(est = start; est < totNoEst; est++){ - - /* - * Do detection on the current frame using - * guide-info from the previous. - *******************************************/ - if(est > 0){ - FDKmemcpy(guideVectors[est].guideVectorDetected,detectionVectors[est-1],nSfb*sizeof(UCHAR)); - } - - FDKmemclear(detectionVectors[est], nSfb*sizeof(UCHAR)); - - if(est < totNoEst-1){ - FDKmemclear(guideVectors[est+1].guideVectorDiff,nSfb*sizeof(FIXP_DBL)); - FDKmemclear(guideVectors[est+1].guideVectorOrig,nSfb*sizeof(FIXP_DBL)); - FDKmemclear(guideVectors[est+1].guideVectorDetected,nSfb*sizeof(UCHAR)); - - detection(quotaBuffer[est], - pDiffVecScfb[est], - nSfb, - detectionVectors[est], - pFreqBandTable, - sfmOrig[est], - sfmSbr[est], - guideVectors[est], - guideVectors[est+1], - mhParams->thresHolds); - } - else{ - FDKmemclear(guideVectors[est].guideVectorDiff,nSfb*sizeof(FIXP_DBL)); - FDKmemclear(guideVectors[est].guideVectorOrig,nSfb*sizeof(FIXP_DBL)); - FDKmemclear(guideVectors[est].guideVectorDetected,nSfb*sizeof(UCHAR)); - - detection(quotaBuffer[est], - pDiffVecScfb[est], - nSfb, - detectionVectors[est], - pFreqBandTable, - sfmOrig[est], - sfmSbr[est], - guideVectors[est], - guideVectors[est], - mhParams->thresHolds); - } - } - - - /* Clean up the detection.*/ - transientCleanUp(quotaBuffer, - nSfb, - detectionVectors, - pAddHarmSfb, - pPrevAddHarmSfb, - signBuffer, - pFreqBandTable, - start, - totNoEst, - newDetectionAllowed, - pNrgVector, - mhParams->thresHolds); - - - /* Set flag... */ - *pAddHarmFlag = 0; - for(i=0; i<nSfb; i++){ - if(pAddHarmSfb[i]){ - *pAddHarmFlag = 1; - break; - } - } - - FDKmemcpy(pPrevAddHarmSfb, pAddHarmSfb, nSfb*sizeof(UCHAR)); - FDKmemcpy(guideVectors[0].guideVectorDetected,pAddHarmSfb,nSfb*sizeof(INT)); - - for(i=0; i<nSfb ; i++){ - - guideVectors[0].guideVectorDiff[i] = FL2FXCONST_DBL(0.0f); - guideVectors[0].guideVectorOrig[i] = FL2FXCONST_DBL(0.0f); - - if(pAddHarmSfb[i] == 1){ - /* If we had a detection use the guide-value in the next frame from the last estimate were the detection - was done.*/ - for(est=start; est < totNoEst; est++){ - if(guideVectors[est].guideVectorDiff[i] != FL2FXCONST_DBL(0.0f)){ - guideVectors[0].guideVectorDiff[i] = guideVectors[est].guideVectorDiff[i]; - } - if(guideVectors[est].guideVectorOrig[i] != FL2FXCONST_DBL(0.0f)){ - guideVectors[0].guideVectorOrig[i] = guideVectors[est].guideVectorOrig[i]; - } - } - } - } - -} - - -/**************************************************************************/ -/*! - \brief Calculates a compensation vector for the energy data. - - This function calculates a compensation vector for the energy data (i.e. - envelope data) that is calculated elsewhere. This is since, one sine on - the border of two scalefactor bands, will be replace by one sine in the - middle of either scalefactor band. However, since the sine that is replaced - will influence the energy estimate in both scalefactor bands (in the envelops - calculation function) a compensation value is required in order to avoid - noise substitution in the decoder next to the synthetic sine. - - \return none. - -*/ -/**************************************************************************/ -static void calculateCompVector(UCHAR *pAddHarmSfb, - FIXP_DBL **pTonalityMatrix, - INT ** pSignMatrix, - UCHAR *pEnvComp, - INT nSfb, - const UCHAR *freqBandTable, - INT totNoEst, - INT maxComp, - UCHAR *pPrevEnvComp, - INT newDetectionAllowed) -{ - - INT scfBand,est,l,ll,lu,maxPosF,maxPosT; - FIXP_DBL maxVal; - INT compValue; - FIXP_DBL tmp; - - FDKmemclear(pEnvComp,nSfb*sizeof(UCHAR)); - - for(scfBand=0; scfBand < nSfb; scfBand++){ - - if(pAddHarmSfb[scfBand]){ /* A missing sine was detected */ - ll = freqBandTable[scfBand]; - lu = freqBandTable[scfBand+1]; - - maxPosF = 0; /* First find the maximum*/ - maxPosT = 0; - maxVal = FL2FXCONST_DBL(0.0f); - - for(est=0;est<totNoEst;est++){ - for(l=ll; l<lu; l++){ - if(pTonalityMatrix[est][l] > maxVal){ - maxVal = pTonalityMatrix[est][l]; - maxPosF = l; - maxPosT = est; - } - } - } - - /* - * If the maximum tonality is at the lower border of the - * scalefactor band, we check the sign of the adjacent channels - * to see if this sine is shared by the lower channel. If so, the - * energy of the single sine will be present in two scalefactor bands - * in the SBR data, which will cause problems in the decoder, when we - * add a sine to just one of the channels. - *********************************************************************/ - if(maxPosF == ll && scfBand){ - if(!pAddHarmSfb[scfBand - 1]) { /* No detection below*/ - if (pSignMatrix[maxPosT][maxPosF - 1] > 0 && pSignMatrix[maxPosT][maxPosF] < 0) { - /* The comp value is calulated as the tonallity value, i.e we want to - reduce the envelope data for this channel with as much as the tonality - that is spread from the channel above. (ld64(RELAXATION) = 0.31143075889) */ - tmp = fixp_abs((FIXP_DBL)CalcLdData(pTonalityMatrix[maxPosT][maxPosF - 1]) + RELAXATION_LD64); - tmp = (tmp >> (DFRACT_BITS-1-LD_DATA_SHIFT-1)) + (FIXP_DBL)1; /* shift one bit less for rounding */ - compValue = ((INT)(LONG)tmp) >> 1; - - /* limit the comp-value*/ - if (compValue > maxComp) - compValue = maxComp; - - pEnvComp[scfBand-1] = compValue; - } - } - } - - /* - * Same as above, but for the upper end of the scalefactor-band. - ***************************************************************/ - if(maxPosF == lu-1 && scfBand+1 < nSfb){ /* Upper border*/ - if(!pAddHarmSfb[scfBand + 1]) { - if (pSignMatrix[maxPosT][maxPosF] > 0 && pSignMatrix[maxPosT][maxPosF + 1] < 0) { - tmp = fixp_abs((FIXP_DBL)CalcLdData(pTonalityMatrix[maxPosT][maxPosF + 1]) + RELAXATION_LD64); - tmp = (tmp >> (DFRACT_BITS-1-LD_DATA_SHIFT-1)) + (FIXP_DBL)1; /* shift one bit less for rounding */ - compValue = ((INT)(LONG)tmp) >> 1; - - if (compValue > maxComp) - compValue = maxComp; - - pEnvComp[scfBand+1] = compValue; - } - } - } - } - } - - if(newDetectionAllowed == 0){ - for(scfBand=0;scfBand<nSfb;scfBand++){ - if(pEnvComp[scfBand] != 0 && pPrevEnvComp[scfBand] == 0) - pEnvComp[scfBand] = 0; - } - } - - /* remember the value for the next frame.*/ - FDKmemcpy(pPrevEnvComp,pEnvComp,nSfb*sizeof(UCHAR)); -} - - -/**************************************************************************/ -/*! - \brief Detects where strong tonal components will be missing after - HFR in the decoder. - - - \return none. - -*/ -/**************************************************************************/ -void -FDKsbrEnc_SbrMissingHarmonicsDetectorQmf(HANDLE_SBR_MISSING_HARMONICS_DETECTOR h_sbrMHDet, - FIXP_DBL ** pQuotaBuffer, - INT ** pSignBuffer, - SCHAR* indexVector, - const SBR_FRAME_INFO *pFrameInfo, - const UCHAR* pTranInfo, - INT* pAddHarmonicsFlag, - UCHAR* pAddHarmonicsScaleFactorBands, - const UCHAR* freqBandTable, - INT nSfb, - UCHAR* envelopeCompensation, - FIXP_DBL *pNrgVector) -{ - INT transientFlag = pTranInfo[1]; - INT transientPos = pTranInfo[0]; - INT newDetectionAllowed; - INT transientDetStart = 0; - - UCHAR ** detectionVectors = h_sbrMHDet->detectionVectors; - INT move = h_sbrMHDet->move; - INT noEstPerFrame = h_sbrMHDet->noEstPerFrame; - INT totNoEst = h_sbrMHDet->totNoEst; - INT prevTransientFlag = h_sbrMHDet->previousTransientFlag; - INT prevTransientFrame = h_sbrMHDet->previousTransientFrame; - INT transientPosOffset = h_sbrMHDet->transientPosOffset; - INT prevTransientPos = h_sbrMHDet->previousTransientPos; - GUIDE_VECTORS* guideVectors = h_sbrMHDet->guideVectors; - INT deltaTime = h_sbrMHDet->mhParams->deltaTime; - INT maxComp = h_sbrMHDet->mhParams->maxComp; - - int est; - - /* - Buffer values. - */ - FDK_ASSERT(move<=(MAX_NO_OF_ESTIMATES>>1)); - FDK_ASSERT(noEstPerFrame<=(MAX_NO_OF_ESTIMATES>>1)); - - FIXP_DBL *sfmSbr[MAX_NO_OF_ESTIMATES]; - FIXP_DBL *sfmOrig[MAX_NO_OF_ESTIMATES]; - FIXP_DBL *tonalityDiff[MAX_NO_OF_ESTIMATES]; - - for (est=0; est < MAX_NO_OF_ESTIMATES/2; est++) { - sfmSbr[est] = h_sbrMHDet->sfmSbr[est]; - sfmOrig[est] = h_sbrMHDet->sfmOrig[est]; - tonalityDiff[est] = h_sbrMHDet->tonalityDiff[est]; - } - - C_ALLOC_SCRATCH_START(scratch_mem, FIXP_DBL, (3*MAX_NO_OF_ESTIMATES/2*MAX_FREQ_COEFFS)); - FIXP_DBL *scratch = scratch_mem; - for (; est < MAX_NO_OF_ESTIMATES; est++) { - sfmSbr[est] = scratch; scratch+=MAX_FREQ_COEFFS; - sfmOrig[est] = scratch; scratch+=MAX_FREQ_COEFFS; - tonalityDiff[est] = scratch; scratch+=MAX_FREQ_COEFFS; - } - - - - /* Determine if we're allowed to detect "missing harmonics" that wasn't detected before. - In order to be allowed to do new detection, there must be a transient in the current - frame, or a transient in the previous frame sufficiently close to the current frame. */ - newDetectionAllowed = isDetectionOfNewToneAllowed(pFrameInfo, - &transientDetStart, - noEstPerFrame, - prevTransientFrame, - prevTransientPos, - prevTransientFlag, - transientPosOffset, - transientFlag, - transientPos, - deltaTime, - h_sbrMHDet); - - /* Calulate the variables that will be used subsequently for the actual detection */ - calculateDetectorInput(pQuotaBuffer, - indexVector, - tonalityDiff, - sfmOrig, - sfmSbr, - freqBandTable, - nSfb, - noEstPerFrame, - move); - - /* Do the actual detection using information from previous detections */ - detectionWithPrediction(pQuotaBuffer, - tonalityDiff, - pSignBuffer, - nSfb, - freqBandTable, - sfmOrig, - sfmSbr, - detectionVectors, - h_sbrMHDet->guideScfb, - guideVectors, - noEstPerFrame, - transientDetStart, - totNoEst, - newDetectionAllowed, - pAddHarmonicsFlag, - pAddHarmonicsScaleFactorBands, - pNrgVector, - h_sbrMHDet->mhParams); - - /* Calculate the comp vector, so that the energy can be - compensated for a sine between two QMF-bands. */ - calculateCompVector(pAddHarmonicsScaleFactorBands, - pQuotaBuffer, - pSignBuffer, - envelopeCompensation, - nSfb, - freqBandTable, - totNoEst, - maxComp, - h_sbrMHDet->prevEnvelopeCompensation, - newDetectionAllowed); - - for (est=0; est < move; est++) { - FDKmemcpy(tonalityDiff[est], tonalityDiff[est + noEstPerFrame], sizeof(FIXP_DBL)*MAX_FREQ_COEFFS); - FDKmemcpy(sfmOrig[est], sfmOrig[est + noEstPerFrame], sizeof(FIXP_DBL)*MAX_FREQ_COEFFS); - FDKmemcpy(sfmSbr[est], sfmSbr[est + noEstPerFrame], sizeof(FIXP_DBL)*MAX_FREQ_COEFFS); - } - C_ALLOC_SCRATCH_END(scratch, FIXP_DBL, (3*MAX_NO_OF_ESTIMATES/2*MAX_FREQ_COEFFS)); - - -} - -/**************************************************************************/ -/*! - \brief Initialize an instance of the missing harmonics detector. - - - \return errorCode, noError if OK. - -*/ -/**************************************************************************/ -INT -FDKsbrEnc_CreateSbrMissingHarmonicsDetector ( - HANDLE_SBR_MISSING_HARMONICS_DETECTOR hSbrMHDet, - INT chan) -{ - HANDLE_SBR_MISSING_HARMONICS_DETECTOR hs = hSbrMHDet; - INT i; - - UCHAR* detectionVectors = GetRam_Sbr_detectionVectors(chan); - UCHAR* guideVectorDetected = GetRam_Sbr_guideVectorDetected(chan); - FIXP_DBL* guideVectorDiff = GetRam_Sbr_guideVectorDiff(chan); - FIXP_DBL* guideVectorOrig = GetRam_Sbr_guideVectorOrig(chan); - - FDKmemclear (hs,sizeof(SBR_MISSING_HARMONICS_DETECTOR)); - - hs->prevEnvelopeCompensation = GetRam_Sbr_prevEnvelopeCompensation(chan); - hs->guideScfb = GetRam_Sbr_guideScfb(chan); - - for(i=0; i<MAX_NO_OF_ESTIMATES; i++) { - hs->guideVectors[i].guideVectorDiff = guideVectorDiff + (i*MAX_FREQ_COEFFS); - hs->guideVectors[i].guideVectorOrig = guideVectorOrig + (i*MAX_FREQ_COEFFS); - hs->detectionVectors[i] = detectionVectors + (i*MAX_FREQ_COEFFS); - hs->guideVectors[i].guideVectorDetected = guideVectorDetected + (i*MAX_FREQ_COEFFS); - } - - return 0; -} - - -/**************************************************************************/ -/*! - \brief Initialize an instance of the missing harmonics detector. - - - \return errorCode, noError if OK. - -*/ -/**************************************************************************/ -INT -FDKsbrEnc_InitSbrMissingHarmonicsDetector ( - HANDLE_SBR_MISSING_HARMONICS_DETECTOR hSbrMHDet, - INT sampleFreq, - INT frameSize, - INT nSfb, - INT qmfNoChannels, - INT totNoEst, - INT move, - INT noEstPerFrame, - UINT sbrSyntaxFlags - ) -{ - HANDLE_SBR_MISSING_HARMONICS_DETECTOR hs = hSbrMHDet; - int i; - - FDK_ASSERT(totNoEst <= MAX_NO_OF_ESTIMATES); - - if (sbrSyntaxFlags & SBR_SYNTAX_LOW_DELAY) - { - switch(frameSize){ - case 1024: - case 512: - hs->transientPosOffset = FRAME_MIDDLE_SLOT_512LD; - hs->timeSlots = 16; - break; - case 960: - case 480: - hs->transientPosOffset = FRAME_MIDDLE_SLOT_512LD; - hs->timeSlots = 15; - break; - default: - return -1; - } - } else - { - switch(frameSize){ - case 2048: - case 1024: - hs->transientPosOffset = FRAME_MIDDLE_SLOT_2048; - hs->timeSlots = NUMBER_TIME_SLOTS_2048; - break; - case 1920: - case 960: - hs->transientPosOffset = FRAME_MIDDLE_SLOT_1920; - hs->timeSlots = NUMBER_TIME_SLOTS_1920; - break; - default: - return -1; - } - } - - if (sbrSyntaxFlags & SBR_SYNTAX_LOW_DELAY) { - hs->mhParams = ¶msAacLd; - } else - hs->mhParams = ¶msAac; - - hs->qmfNoChannels = qmfNoChannels; - hs->sampleFreq = sampleFreq; - hs->nSfb = nSfb; - - hs->totNoEst = totNoEst; - hs->move = move; - hs->noEstPerFrame = noEstPerFrame; - - for(i=0; i<totNoEst; i++) { - FDKmemclear (hs->guideVectors[i].guideVectorDiff,sizeof(FIXP_DBL)*MAX_FREQ_COEFFS); - FDKmemclear (hs->guideVectors[i].guideVectorOrig,sizeof(FIXP_DBL)*MAX_FREQ_COEFFS); - FDKmemclear (hs->detectionVectors[i],sizeof(UCHAR)*MAX_FREQ_COEFFS); - FDKmemclear (hs->guideVectors[i].guideVectorDetected,sizeof(UCHAR)*MAX_FREQ_COEFFS); - } - - //for(i=0; i<totNoEst/2; i++) { - for(i=0; i<MAX_NO_OF_ESTIMATES/2; i++) { - FDKmemclear (hs->tonalityDiff[i],sizeof(FIXP_DBL)*MAX_FREQ_COEFFS); - FDKmemclear (hs->sfmOrig[i],sizeof(FIXP_DBL)*MAX_FREQ_COEFFS); - FDKmemclear (hs->sfmSbr[i],sizeof(FIXP_DBL)*MAX_FREQ_COEFFS); - } - - FDKmemclear ( hs->prevEnvelopeCompensation, sizeof(UCHAR)*MAX_FREQ_COEFFS); - FDKmemclear ( hs->guideScfb, sizeof(UCHAR)*MAX_FREQ_COEFFS); - - hs->previousTransientFlag = 0; - hs->previousTransientFrame = 0; - hs->previousTransientPos = 0; - - return (0); -} - -/**************************************************************************/ -/*! - \brief Deletes an instance of the missing harmonics detector. - - - \return none. - -*/ -/**************************************************************************/ -void -FDKsbrEnc_DeleteSbrMissingHarmonicsDetector(HANDLE_SBR_MISSING_HARMONICS_DETECTOR hSbrMHDet) -{ - if (hSbrMHDet) { - HANDLE_SBR_MISSING_HARMONICS_DETECTOR hs = hSbrMHDet; - - FreeRam_Sbr_detectionVectors(&hs->detectionVectors[0]); - FreeRam_Sbr_guideVectorDetected(&hs->guideVectors[0].guideVectorDetected); - FreeRam_Sbr_guideVectorDiff(&hs->guideVectors[0].guideVectorDiff); - FreeRam_Sbr_guideVectorOrig(&hs->guideVectors[0].guideVectorOrig); - FreeRam_Sbr_prevEnvelopeCompensation(&hs->prevEnvelopeCompensation); - FreeRam_Sbr_guideScfb(&hs->guideScfb); - - } -} - -/**************************************************************************/ -/*! - \brief Resets an instance of the missing harmonics detector. - - - \return error code, noError if OK. - -*/ -/**************************************************************************/ -INT -FDKsbrEnc_ResetSbrMissingHarmonicsDetector (HANDLE_SBR_MISSING_HARMONICS_DETECTOR hSbrMissingHarmonicsDetector, - INT nSfb) -{ - int i; - FIXP_DBL tempGuide[MAX_FREQ_COEFFS]; - UCHAR tempGuideInt[MAX_FREQ_COEFFS]; - INT nSfbPrev; - - nSfbPrev = hSbrMissingHarmonicsDetector->nSfb; - hSbrMissingHarmonicsDetector->nSfb = nSfb; - - FDKmemcpy( tempGuideInt, hSbrMissingHarmonicsDetector->guideScfb, nSfbPrev * sizeof(UCHAR) ); - - if ( nSfb > nSfbPrev ) { - for ( i = 0; i < (nSfb - nSfbPrev); i++ ) { - hSbrMissingHarmonicsDetector->guideScfb[i] = 0; - } - - for ( i = 0; i < nSfbPrev; i++ ) { - hSbrMissingHarmonicsDetector->guideScfb[i + (nSfb - nSfbPrev)] = tempGuideInt[i]; - } - } - else { - for ( i = 0; i < nSfb; i++ ) { - hSbrMissingHarmonicsDetector->guideScfb[i] = tempGuideInt[i + (nSfbPrev-nSfb)]; - } - } - - FDKmemcpy ( tempGuide, hSbrMissingHarmonicsDetector->guideVectors[0].guideVectorDiff, nSfbPrev * sizeof(FIXP_DBL) ); - - if (nSfb > nSfbPrev ) { - for ( i = 0; i < (nSfb - nSfbPrev); i++ ) { - hSbrMissingHarmonicsDetector->guideVectors[0].guideVectorDiff[i] = FL2FXCONST_DBL(0.0f); - } - - for ( i = 0; i < nSfbPrev; i++ ) { - hSbrMissingHarmonicsDetector->guideVectors[0].guideVectorDiff[i + (nSfb - nSfbPrev)] = tempGuide[i]; - } - } - else { - for ( i = 0; i < nSfb; i++ ) { - hSbrMissingHarmonicsDetector->guideVectors[0].guideVectorDiff[i] = tempGuide[i + (nSfbPrev-nSfb)]; - } - } - - FDKmemcpy ( tempGuide, hSbrMissingHarmonicsDetector->guideVectors[0].guideVectorOrig, nSfbPrev * sizeof(FIXP_DBL) ); - - if ( nSfb > nSfbPrev ) { - for ( i = 0; i< (nSfb - nSfbPrev); i++ ) { - hSbrMissingHarmonicsDetector->guideVectors[0].guideVectorOrig[i] = FL2FXCONST_DBL(0.0f); - } - - for ( i = 0; i < nSfbPrev; i++ ) { - hSbrMissingHarmonicsDetector->guideVectors[0].guideVectorOrig[i + (nSfb - nSfbPrev)] = tempGuide[i]; - } - } - else { - for ( i = 0; i < nSfb; i++ ) { - hSbrMissingHarmonicsDetector->guideVectors[0].guideVectorOrig[i] = tempGuide[i + (nSfbPrev-nSfb)]; - } - } - - FDKmemcpy ( tempGuideInt, hSbrMissingHarmonicsDetector->guideVectors[0].guideVectorDetected, nSfbPrev * sizeof(UCHAR) ); - - if ( nSfb > nSfbPrev ) { - for ( i = 0; i < (nSfb - nSfbPrev); i++ ) { - hSbrMissingHarmonicsDetector->guideVectors[0].guideVectorDetected[i] = 0; - } - - for ( i = 0; i < nSfbPrev; i++ ) { - hSbrMissingHarmonicsDetector->guideVectors[0].guideVectorDetected[i + (nSfb - nSfbPrev)] = tempGuideInt[i]; - } - } - else { - for ( i = 0; i < nSfb; i++ ) { - hSbrMissingHarmonicsDetector->guideVectors[0].guideVectorDetected[i] = tempGuideInt[i + (nSfbPrev-nSfb)]; - } - } - - FDKmemcpy ( tempGuideInt, hSbrMissingHarmonicsDetector->prevEnvelopeCompensation, nSfbPrev * sizeof(UCHAR) ); - - if ( nSfb > nSfbPrev ) { - for ( i = 0; i < (nSfb - nSfbPrev); i++ ) { - hSbrMissingHarmonicsDetector->prevEnvelopeCompensation[i] = 0; - } - - for ( i = 0; i < nSfbPrev; i++ ) { - hSbrMissingHarmonicsDetector->prevEnvelopeCompensation[i + (nSfb - nSfbPrev)] = tempGuideInt[i]; - } - } - else { - for ( i = 0; i < nSfb; i++ ) { - hSbrMissingHarmonicsDetector->prevEnvelopeCompensation[i] = tempGuideInt[i + (nSfbPrev-nSfb)]; - } - } - - return 0; -} - |