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Diffstat (limited to 'libAACenc/src/band_nrg.cpp')
| -rw-r--r-- | libAACenc/src/band_nrg.cpp | 422 |
1 files changed, 212 insertions, 210 deletions
diff --git a/libAACenc/src/band_nrg.cpp b/libAACenc/src/band_nrg.cpp index 861f7a8..fb22dbb 100644 --- a/libAACenc/src/band_nrg.cpp +++ b/libAACenc/src/band_nrg.cpp @@ -1,74 +1,85 @@ - -/* ----------------------------------------------------------------------------------------------------------- +/* ----------------------------------------------------------------------------- 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. +© 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. +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: +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 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 +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. +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. +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." +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. +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. +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. +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 @@ -79,17 +90,17 @@ Am Wolfsmantel 33 www.iis.fraunhofer.de/amm amm-info@iis.fraunhofer.de ------------------------------------------------------------------------------------------------------------ */ +----------------------------------------------------------------------------- */ -/***************************** MPEG-4 AAC Encoder ************************** +/**************************** AAC encoder library ****************************** - Initial author: M. Werner - contents/description: Band/Line energy calculations + Author(s): M. Werner -******************************************************************************/ + Description: Band/Line energy calculations -#include "band_nrg.h" +*******************************************************************************/ +#include "band_nrg.h" /***************************************************************************** functionname: FDKaacEnc_CalcSfbMaxScaleSpec @@ -97,23 +108,26 @@ amm-info@iis.fraunhofer.de input: output: *****************************************************************************/ -void -FDKaacEnc_CalcSfbMaxScaleSpec(const FIXP_DBL *RESTRICT mdctSpectrum, - const INT *RESTRICT bandOffset, - INT *RESTRICT sfbMaxScaleSpec, - const INT numBands) -{ - INT i,j; +void FDKaacEnc_CalcSfbMaxScaleSpec(const FIXP_DBL *RESTRICT mdctSpectrum, + const INT *RESTRICT bandOffset, + INT *RESTRICT sfbMaxScaleSpec, + const INT numBands) { + INT i, j; FIXP_DBL maxSpc, tmp; - for(i=0; i<numBands; i++) { + for (i = 0; i < numBands; i++) { maxSpc = (FIXP_DBL)0; - for (j=bandOffset[i]; j<bandOffset[i+1]; j++) { + + DWORD_ALIGNED(mdctSpectrum); + + for (j = bandOffset[i]; j < bandOffset[i + 1]; j++) { tmp = fixp_abs(mdctSpectrum[j]); maxSpc = fixMax(maxSpc, tmp); } - sfbMaxScaleSpec[i] = (maxSpc==(FIXP_DBL)0) ? (DFRACT_BITS-2) : CntLeadingZeros(maxSpc)-1; - /* CountLeadingBits() is not necessary here since test value is always > 0 */ + j = CntLeadingZeros(maxSpc) - 1; + sfbMaxScaleSpec[i] = fixMin((DFRACT_BITS - 2), j); + /* CountLeadingBits() is not necessary here since test value is always > 0 + */ } } @@ -124,43 +138,45 @@ FDKaacEnc_CalcSfbMaxScaleSpec(const FIXP_DBL *RESTRICT mdctSpectrum, output: *****************************************************************************/ FIXP_DBL -FDKaacEnc_CheckBandEnergyOptim(const FIXP_DBL *RESTRICT mdctSpectrum, - INT *RESTRICT sfbMaxScaleSpec, - const INT *RESTRICT bandOffset, - const INT numBands, - FIXP_DBL *RESTRICT bandEnergy, - FIXP_DBL *RESTRICT bandEnergyLdData, - INT minSpecShift) -{ +FDKaacEnc_CheckBandEnergyOptim(const FIXP_DBL *const RESTRICT mdctSpectrum, + const INT *const RESTRICT sfbMaxScaleSpec, + const INT *const RESTRICT bandOffset, + const INT numBands, + FIXP_DBL *RESTRICT bandEnergy, + FIXP_DBL *RESTRICT bandEnergyLdData, + const INT minSpecShift) { INT i, j, scale, nr = 0; FIXP_DBL maxNrgLd = FL2FXCONST_DBL(-1.0f); FIXP_DBL maxNrg = 0; FIXP_DBL spec; - for(i=0; i<numBands; i++) { - scale = fixMax(0, sfbMaxScaleSpec[i]-4); + for (i = 0; i < numBands; i++) { + scale = fixMax(0, sfbMaxScaleSpec[i] - 4); FIXP_DBL tmp = 0; - for (j=bandOffset[i]; j<bandOffset[i+1]; j++){ - spec = mdctSpectrum[j]<<scale; - tmp = fPow2AddDiv2(tmp, spec); + + DWORD_ALIGNED(mdctSpectrum); + + for (j = bandOffset[i]; j < bandOffset[i + 1]; j++) { + spec = mdctSpectrum[j] << scale; + tmp = fPow2AddDiv2(tmp, spec); } - bandEnergy[i] = tmp<<1; + bandEnergy[i] = tmp << 1; /* calculate ld of bandNrg, subtract scaling */ bandEnergyLdData[i] = CalcLdData(bandEnergy[i]); if (bandEnergyLdData[i] != FL2FXCONST_DBL(-1.0f)) { - bandEnergyLdData[i] -= scale*FL2FXCONST_DBL(2.0/64); + bandEnergyLdData[i] -= scale * FL2FXCONST_DBL(2.0 / 64); } /* find index of maxNrg */ if (bandEnergyLdData[i] > maxNrgLd) { - maxNrgLd = bandEnergyLdData[i]; - nr = i; + maxNrgLd = bandEnergyLdData[i]; + nr = i; } } /* return unscaled maxNrg*/ - scale = fixMax(0,sfbMaxScaleSpec[nr]-4); - scale = fixMax(2*(minSpecShift-scale),-(DFRACT_BITS-1)); + scale = fixMax(0, sfbMaxScaleSpec[nr] - 4); + scale = fixMax(2 * (minSpecShift - scale), -(DFRACT_BITS - 1)); maxNrg = scaleValue(bandEnergy[nr], scale); @@ -173,187 +189,173 @@ FDKaacEnc_CheckBandEnergyOptim(const FIXP_DBL *RESTRICT mdctSpectrum, input: output: *****************************************************************************/ -INT -FDKaacEnc_CalcBandEnergyOptimLong(const FIXP_DBL *RESTRICT mdctSpectrum, - INT *RESTRICT sfbMaxScaleSpec, - const INT *RESTRICT bandOffset, - const INT numBands, - FIXP_DBL *RESTRICT bandEnergy, - FIXP_DBL *RESTRICT bandEnergyLdData) -{ +INT FDKaacEnc_CalcBandEnergyOptimLong(const FIXP_DBL *RESTRICT mdctSpectrum, + INT *RESTRICT sfbMaxScaleSpec, + const INT *RESTRICT bandOffset, + const INT numBands, + FIXP_DBL *RESTRICT bandEnergy, + FIXP_DBL *RESTRICT bandEnergyLdData) { INT i, j, shiftBits = 0; FIXP_DBL maxNrgLd = FL2FXCONST_DBL(0.0f); FIXP_DBL spec; - for(i=0; i<numBands; i++) { - INT leadingBits = sfbMaxScaleSpec[i]-4; /* max sfbWidth = 96 ; 2^7=128 => 7/2 = 4 (spc*spc) */ - FIXP_DBL tmp = FL2FXCONST_DBL(0.0); - /* don't use scaleValue() here, it increases workload quite sufficiently... */ - if (leadingBits>=0) { - for (j=bandOffset[i];j<bandOffset[i+1];j++) { - spec = mdctSpectrum[j]<<leadingBits; - tmp = fPow2AddDiv2(tmp, spec); - } - } else { - INT shift = -leadingBits; - for (j=bandOffset[i];j<bandOffset[i+1];j++){ - spec = mdctSpectrum[j]>>shift; - tmp = fPow2AddDiv2(tmp, spec); - } - } - bandEnergy[i] = tmp<<1; + for (i = 0; i < numBands; i++) { + INT leadingBits = sfbMaxScaleSpec[i] - + 4; /* max sfbWidth = 96 ; 2^7=128 => 7/2 = 4 (spc*spc) */ + FIXP_DBL tmp = FL2FXCONST_DBL(0.0); + /* don't use scaleValue() here, it increases workload quite sufficiently... + */ + if (leadingBits >= 0) { + for (j = bandOffset[i]; j < bandOffset[i + 1]; j++) { + spec = mdctSpectrum[j] << leadingBits; + tmp = fPow2AddDiv2(tmp, spec); + } + } else { + INT shift = -leadingBits; + for (j = bandOffset[i]; j < bandOffset[i + 1]; j++) { + spec = mdctSpectrum[j] >> shift; + tmp = fPow2AddDiv2(tmp, spec); + } + } + bandEnergy[i] = tmp << 1; } /* calculate ld of bandNrg, subtract scaling */ LdDataVector(bandEnergy, bandEnergyLdData, numBands); - for(i=numBands; i--!=0; ) { - FIXP_DBL scaleDiff = (sfbMaxScaleSpec[i]-4)*FL2FXCONST_DBL(2.0/64); - - bandEnergyLdData[i] = (bandEnergyLdData[i] >= ((FL2FXCONST_DBL(-1.f)>>1) + (scaleDiff>>1))) - ? bandEnergyLdData[i]-scaleDiff : FL2FXCONST_DBL(-1.f); - /* find maxNrgLd */ - maxNrgLd = fixMax(maxNrgLd, bandEnergyLdData[i]); + for (i = numBands; i-- != 0;) { + FIXP_DBL scaleDiff = (sfbMaxScaleSpec[i] - 4) * FL2FXCONST_DBL(2.0 / 64); + + bandEnergyLdData[i] = (bandEnergyLdData[i] >= + ((FL2FXCONST_DBL(-1.f) >> 1) + (scaleDiff >> 1))) + ? bandEnergyLdData[i] - scaleDiff + : FL2FXCONST_DBL(-1.f); + /* find maxNrgLd */ + maxNrgLd = fixMax(maxNrgLd, bandEnergyLdData[i]); } - if (maxNrgLd<=(FIXP_DBL)0) - { - for(i=numBands; i--!=0; ) - { - INT scale = fixMin((sfbMaxScaleSpec[i]-4)<<1,(DFRACT_BITS-1)); - bandEnergy[i] = scaleValue(bandEnergy[i], -scale); - } - return 0; - } - else - { /* scale down NRGs */ - while (maxNrgLd>FL2FXCONST_DBL(0.0f)) - { - maxNrgLd -= FL2FXCONST_DBL(2.0/64); - shiftBits++; - } - for(i=numBands; i--!=0; ) - { - INT scale = fixMin( ((sfbMaxScaleSpec[i]-4)+shiftBits)<<1, (DFRACT_BITS-1)); - bandEnergyLdData[i] -= shiftBits*FL2FXCONST_DBL(2.0/64); - bandEnergy[i] = scaleValue(bandEnergy[i], -scale); - } - return shiftBits; + if (maxNrgLd <= (FIXP_DBL)0) { + for (i = numBands; i-- != 0;) { + INT scale = fixMin((sfbMaxScaleSpec[i] - 4) << 1, (DFRACT_BITS - 1)); + bandEnergy[i] = scaleValue(bandEnergy[i], -scale); + } + return 0; + } else { /* scale down NRGs */ + while (maxNrgLd > FL2FXCONST_DBL(0.0f)) { + maxNrgLd -= FL2FXCONST_DBL(2.0 / 64); + shiftBits++; + } + for (i = numBands; i-- != 0;) { + INT scale = fixMin(((sfbMaxScaleSpec[i] - 4) + shiftBits) << 1, + (DFRACT_BITS - 1)); + bandEnergyLdData[i] -= shiftBits * FL2FXCONST_DBL(2.0 / 64); + bandEnergy[i] = scaleValue(bandEnergy[i], -scale); + } + return shiftBits; } } - /***************************************************************************** functionname: FDKaacEnc_CalcBandEnergyOptimShort description: input: output: *****************************************************************************/ -void -FDKaacEnc_CalcBandEnergyOptimShort(const FIXP_DBL *RESTRICT mdctSpectrum, - INT *RESTRICT sfbMaxScaleSpec, - const INT *RESTRICT bandOffset, - const INT numBands, - FIXP_DBL *RESTRICT bandEnergy) -{ +void FDKaacEnc_CalcBandEnergyOptimShort(const FIXP_DBL *RESTRICT mdctSpectrum, + INT *RESTRICT sfbMaxScaleSpec, + const INT *RESTRICT bandOffset, + const INT numBands, + FIXP_DBL *RESTRICT bandEnergy) { INT i, j; - for(i=0; i<numBands; i++) - { - int leadingBits = sfbMaxScaleSpec[i]-3; /* max sfbWidth = 36 ; 2^6=64 => 6/2 = 3 (spc*spc) */ + for (i = 0; i < numBands; i++) { + int leadingBits = sfbMaxScaleSpec[i] - + 3; /* max sfbWidth = 36 ; 2^6=64 => 6/2 = 3 (spc*spc) */ FIXP_DBL tmp = FL2FXCONST_DBL(0.0); - for (j=bandOffset[i];j<bandOffset[i+1];j++) - { - FIXP_DBL spec = scaleValue(mdctSpectrum[j],leadingBits); - tmp = fPow2AddDiv2(tmp, spec); + for (j = bandOffset[i]; j < bandOffset[i + 1]; j++) { + FIXP_DBL spec = scaleValue(mdctSpectrum[j], leadingBits); + tmp = fPow2AddDiv2(tmp, spec); } bandEnergy[i] = tmp; } - for(i=0; i<numBands; i++) - { - INT scale = (2*(sfbMaxScaleSpec[i]-3))-1; /* max sfbWidth = 36 ; 2^6=64 => 6/2 = 3 (spc*spc) */ - scale = fixMax(fixMin(scale,(DFRACT_BITS-1)),-(DFRACT_BITS-1)); - bandEnergy[i] = scaleValueSaturate(bandEnergy[i], -scale); + for (i = 0; i < numBands; i++) { + INT scale = (2 * (sfbMaxScaleSpec[i] - 3)) - + 1; /* max sfbWidth = 36 ; 2^6=64 => 6/2 = 3 (spc*spc) */ + scale = fixMax(fixMin(scale, (DFRACT_BITS - 1)), -(DFRACT_BITS - 1)); + bandEnergy[i] = scaleValueSaturate(bandEnergy[i], -scale); } } - /***************************************************************************** functionname: FDKaacEnc_CalcBandNrgMSOpt description: input: output: *****************************************************************************/ -void FDKaacEnc_CalcBandNrgMSOpt(const FIXP_DBL *RESTRICT mdctSpectrumLeft, - const FIXP_DBL *RESTRICT mdctSpectrumRight, - INT *RESTRICT sfbMaxScaleSpecLeft, - INT *RESTRICT sfbMaxScaleSpecRight, - const INT *RESTRICT bandOffset, - const INT numBands, - FIXP_DBL *RESTRICT bandEnergyMid, - FIXP_DBL *RESTRICT bandEnergySide, - INT calcLdData, - FIXP_DBL *RESTRICT bandEnergyMidLdData, - FIXP_DBL *RESTRICT bandEnergySideLdData) -{ +void FDKaacEnc_CalcBandNrgMSOpt( + const FIXP_DBL *RESTRICT mdctSpectrumLeft, + const FIXP_DBL *RESTRICT mdctSpectrumRight, + INT *RESTRICT sfbMaxScaleSpecLeft, INT *RESTRICT sfbMaxScaleSpecRight, + const INT *RESTRICT bandOffset, const INT numBands, + FIXP_DBL *RESTRICT bandEnergyMid, FIXP_DBL *RESTRICT bandEnergySide, + INT calcLdData, FIXP_DBL *RESTRICT bandEnergyMidLdData, + FIXP_DBL *RESTRICT bandEnergySideLdData) { INT i, j, minScale; FIXP_DBL NrgMid, NrgSide, specm, specs; - for (i=0; i<numBands; i++) { - + for (i = 0; i < numBands; i++) { NrgMid = NrgSide = FL2FXCONST_DBL(0.0); - minScale = fixMin(sfbMaxScaleSpecLeft[i], sfbMaxScaleSpecRight[i])-4; + minScale = fixMin(sfbMaxScaleSpecLeft[i], sfbMaxScaleSpecRight[i]) - 4; minScale = fixMax(0, minScale); if (minScale > 0) { - for (j=bandOffset[i];j<bandOffset[i+1];j++) { - FIXP_DBL specL = mdctSpectrumLeft[j]<<(minScale-1); - FIXP_DBL specR = mdctSpectrumRight[j]<<(minScale-1); - specm = specL + specR; - specs = specL - specR; - NrgMid = fPow2AddDiv2(NrgMid, specm); - NrgSide = fPow2AddDiv2(NrgSide, specs); + for (j = bandOffset[i]; j < bandOffset[i + 1]; j++) { + FIXP_DBL specL = mdctSpectrumLeft[j] << (minScale - 1); + FIXP_DBL specR = mdctSpectrumRight[j] << (minScale - 1); + specm = specL + specR; + specs = specL - specR; + NrgMid = fPow2AddDiv2(NrgMid, specm); + NrgSide = fPow2AddDiv2(NrgSide, specs); } } else { - for (j=bandOffset[i];j<bandOffset[i+1];j++) { - FIXP_DBL specL = mdctSpectrumLeft[j]>>1; - FIXP_DBL specR = mdctSpectrumRight[j]>>1; - specm = specL + specR; - specs = specL - specR; - NrgMid = fPow2AddDiv2(NrgMid, specm); - NrgSide = fPow2AddDiv2(NrgSide, specs); + for (j = bandOffset[i]; j < bandOffset[i + 1]; j++) { + FIXP_DBL specL = mdctSpectrumLeft[j] >> 1; + FIXP_DBL specR = mdctSpectrumRight[j] >> 1; + specm = specL + specR; + specs = specL - specR; + NrgMid = fPow2AddDiv2(NrgMid, specm); + NrgSide = fPow2AddDiv2(NrgSide, specs); } } - bandEnergyMid[i] = NrgMid<<1; - bandEnergySide[i] = NrgSide<<1; + bandEnergyMid[i] = fMin(NrgMid, (FIXP_DBL)MAXVAL_DBL >> 1) << 1; + bandEnergySide[i] = fMin(NrgSide, (FIXP_DBL)MAXVAL_DBL >> 1) << 1; } - if(calcLdData) { + if (calcLdData) { LdDataVector(bandEnergyMid, bandEnergyMidLdData, numBands); LdDataVector(bandEnergySide, bandEnergySideLdData, numBands); } - for (i=0; i<numBands; i++) - { - INT minScale = fixMin(sfbMaxScaleSpecLeft[i], sfbMaxScaleSpecRight[i]); - INT scale = fixMax(0, 2*(minScale-4)); + for (i = 0; i < numBands; i++) { + minScale = fixMin(sfbMaxScaleSpecLeft[i], sfbMaxScaleSpecRight[i]); + INT scale = fixMax(0, 2 * (minScale - 4)); - if (calcLdData) - { - /* using the minimal scaling of left and right channel can cause very small energies; - check ldNrg before subtract scaling multiplication: fract*INT we don't need fMult */ + if (calcLdData) { + /* using the minimal scaling of left and right channel can cause very + small energies; check ldNrg before subtract scaling multiplication: + fract*INT we don't need fMult */ - int minus = scale*FL2FXCONST_DBL(1.0/64); + int minus = scale * FL2FXCONST_DBL(1.0 / 64); - if (bandEnergyMidLdData[i] != FL2FXCONST_DBL(-1.0f)) - bandEnergyMidLdData[i] -= minus; + if (bandEnergyMidLdData[i] != FL2FXCONST_DBL(-1.0f)) + bandEnergyMidLdData[i] -= minus; - if (bandEnergySideLdData[i] != FL2FXCONST_DBL(-1.0f)) - bandEnergySideLdData[i] -= minus; + if (bandEnergySideLdData[i] != FL2FXCONST_DBL(-1.0f)) + bandEnergySideLdData[i] -= minus; } - scale = fixMin(scale, (DFRACT_BITS-1)); - bandEnergyMid[i] >>= scale; + scale = fixMin(scale, (DFRACT_BITS - 1)); + bandEnergyMid[i] >>= scale; bandEnergySide[i] >>= scale; } } |