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| author | Matthias P. Braendli <matthias.braendli@mpb.li> | 2019-03-04 15:52:49 +0100 |
|---|---|---|
| committer | Matthias P. Braendli <matthias.braendli@mpb.li> | 2019-03-04 15:52:49 +0100 |
| commit | c7f9c2d1d996ac8f67927e9c86b907196ca6a72d (patch) | |
| tree | a2dcc8e8cd3df5628f43242243fd475562ea4082 /libSBRdec/src/psdec.cpp | |
| parent | f665ac21b355ebc74c951c09b4774936a74fdca0 (diff) | |
| parent | 95858d7bd36f19bde4a9595e2bd68f195215b164 (diff) | |
| download | fdk-aac-c7f9c2d1d996ac8f67927e9c86b907196ca6a72d.tar.gz fdk-aac-c7f9c2d1d996ac8f67927e9c86b907196ca6a72d.tar.bz2 fdk-aac-c7f9c2d1d996ac8f67927e9c86b907196ca6a72d.zip | |
Merge remote-tracking branch 'mstorjo/master' into dabplus2
Diffstat (limited to 'libSBRdec/src/psdec.cpp')
| -rw-r--r-- | libSBRdec/src/psdec.cpp | 26 |
1 files changed, 17 insertions, 9 deletions
diff --git a/libSBRdec/src/psdec.cpp b/libSBRdec/src/psdec.cpp index 13a21bf..b31b310 100644 --- a/libSBRdec/src/psdec.cpp +++ b/libSBRdec/src/psdec.cpp @@ -325,11 +325,11 @@ void initSlotBasedRotation( int env, int usb) { INT group = 0; INT bin = 0; - INT noIidSteps; + INT noIidSteps, noFactors; FIXP_SGL invL; FIXP_DBL ScaleL, ScaleR; - FIXP_DBL Alpha, Beta; + FIXP_DBL Alpha, Beta, AlphasValue; FIXP_DBL h11r, h12r, h21r, h22r; const FIXP_DBL *PScaleFactors; @@ -337,9 +337,11 @@ void initSlotBasedRotation( if (h_ps_d->bsData[h_ps_d->processSlot].mpeg.bFineIidQ) { PScaleFactors = ScaleFactorsFine; /* values are shiftet right by one */ noIidSteps = NO_IID_STEPS_FINE; + noFactors = NO_IID_LEVELS_FINE; } else { PScaleFactors = ScaleFactors; /* values are shiftet right by one */ noIidSteps = NO_IID_STEPS; + noFactors = NO_IID_LEVELS; } /* dequantize and decode */ @@ -358,17 +360,23 @@ void initSlotBasedRotation( /* ScaleR and ScaleL are scaled by 1 shift right */ - ScaleR = PScaleFactors[noIidSteps + h_ps_d->specificTo.mpeg.pCoef - ->aaIidIndexMapped[env][bin]]; - ScaleL = PScaleFactors[noIidSteps - h_ps_d->specificTo.mpeg.pCoef - ->aaIidIndexMapped[env][bin]]; - + ScaleL = ScaleR = 0; + if (noIidSteps + h_ps_d->specificTo.mpeg.pCoef->aaIidIndexMapped[env][bin] >= 0 && noIidSteps + h_ps_d->specificTo.mpeg.pCoef->aaIidIndexMapped[env][bin] < noFactors) + ScaleR = PScaleFactors[noIidSteps + h_ps_d->specificTo.mpeg.pCoef + ->aaIidIndexMapped[env][bin]]; + if (noIidSteps - h_ps_d->specificTo.mpeg.pCoef->aaIidIndexMapped[env][bin] >= 0 && noIidSteps - h_ps_d->specificTo.mpeg.pCoef->aaIidIndexMapped[env][bin] < noFactors) + ScaleL = PScaleFactors[noIidSteps - h_ps_d->specificTo.mpeg.pCoef + ->aaIidIndexMapped[env][bin]]; + + AlphasValue = 0; + if (h_ps_d->specificTo.mpeg.pCoef->aaIccIndexMapped[env][bin] >= 0) + AlphasValue = Alphas[h_ps_d->specificTo.mpeg.pCoef->aaIccIndexMapped[env][bin]]; Beta = fMult( - fMult(Alphas[h_ps_d->specificTo.mpeg.pCoef->aaIccIndexMapped[env][bin]], + fMult(AlphasValue, (ScaleR - ScaleL)), FIXP_SQRT05); Alpha = - Alphas[h_ps_d->specificTo.mpeg.pCoef->aaIccIndexMapped[env][bin]] >> 1; + AlphasValue >> 1; /* Alpha and Beta are now both scaled by 2 shifts right */ |