diff options
Diffstat (limited to 'libSBRdec/src/psdec.cpp')
| -rw-r--r-- | libSBRdec/src/psdec.cpp | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/libSBRdec/src/psdec.cpp b/libSBRdec/src/psdec.cpp index 965917a..1729f90 100644 --- a/libSBRdec/src/psdec.cpp +++ b/libSBRdec/src/psdec.cpp @@ -938,13 +938,13 @@ void initSlotBasedRotation( HANDLE_PS_DEC h_ps_d, /*!< pointer to the module sta INT group = 0; INT bin = 0; - INT noIidSteps; + INT noIidSteps, noFactors; /* const UCHAR *pQuantizedIIDs;*/ 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; @@ -984,6 +984,7 @@ void initSlotBasedRotation( HANDLE_PS_DEC h_ps_d, /*!< pointer to the module sta { PScaleFactors = ScaleFactorsFine; /* values are shiftet right by one */ noIidSteps = NO_IID_STEPS_FINE; + noFactors = NO_IID_LEVELS_FINE; /*pQuantizedIIDs = quantizedIIDsFine;*/ } @@ -991,6 +992,7 @@ void initSlotBasedRotation( HANDLE_PS_DEC h_ps_d, /*!< pointer to the module sta { PScaleFactors = ScaleFactors; /* values are shiftet right by one */ noIidSteps = NO_IID_STEPS; + noFactors = NO_IID_LEVELS; /*pQuantizedIIDs = quantizedIIDs;*/ } @@ -1012,11 +1014,17 @@ void initSlotBasedRotation( HANDLE_PS_DEC h_ps_d, /*!< pointer to the module sta /* ScaleR and ScaleL are scaled by 1 shift right */ - ScaleR = PScaleFactors[noIidSteps + h_ps_d->specificTo.mpeg.coef.aaIidIndexMapped[env][bin]]; - ScaleL = PScaleFactors[noIidSteps - h_ps_d->specificTo.mpeg.coef.aaIidIndexMapped[env][bin]]; - - Beta = fMult (fMult( Alphas[h_ps_d->specificTo.mpeg.coef.aaIccIndexMapped[env][bin]], ( ScaleR - ScaleL )), FIXP_SQRT05); - Alpha = Alphas[h_ps_d->specificTo.mpeg.coef.aaIccIndexMapped[env][bin]]>>1; + ScaleL = ScaleR = 0; + if (noIidSteps + h_ps_d->specificTo.mpeg.coef.aaIidIndexMapped[env][bin] >= 0 && noIidSteps + h_ps_d->specificTo.mpeg.coef.aaIidIndexMapped[env][bin] < noFactors) + ScaleR = PScaleFactors[noIidSteps + h_ps_d->specificTo.mpeg.coef.aaIidIndexMapped[env][bin]]; + if (noIidSteps - h_ps_d->specificTo.mpeg.coef.aaIidIndexMapped[env][bin] >= 0 && noIidSteps - h_ps_d->specificTo.mpeg.coef.aaIidIndexMapped[env][bin] < noFactors) + ScaleL = PScaleFactors[noIidSteps - h_ps_d->specificTo.mpeg.coef.aaIidIndexMapped[env][bin]]; + + AlphasValue = 0; + if (h_ps_d->specificTo.mpeg.coef.aaIccIndexMapped[env][bin] >= 0) + AlphasValue = Alphas[h_ps_d->specificTo.mpeg.coef.aaIccIndexMapped[env][bin]]; + Beta = fMult (fMult( AlphasValue, ( ScaleR - ScaleL )), FIXP_SQRT05); + Alpha = AlphasValue>>1; /* Alpha and Beta are now both scaled by 2 shifts right */ |