SMSSpectralShapeShift.cxx

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00001 /*
00002  * Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
00003  *                         UNIVERSITAT POMPEU FABRA
00004  *
00005  *
00006  * This program is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU General Public License as published by
00008  * the Free Software Foundation; either version 2 of the License, or
00009  * (at your option) any later version.
00010  *
00011  * This program is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00014  * GNU General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License
00017  * along with this program; if not, write to the Free Software
00018  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00019  *
00020  */
00021 
00022 #include "SMSSpectralShapeShift.hxx"
00023 #include "ProcessingFactory.hxx"
00024 
00025 namespace CLAM
00026 {
00027         
00028 namespace Hidden
00029 {
00030         static const char * metadata[] = {
00031                 "key", "SMSSpectralShapeShift",
00032                 "category", "SMS Transformations",
00033                 "description", "SMSSpectralShapeShift",
00034                 0
00035         };
00036         static FactoryRegistrator<ProcessingFactory, SMSSpectralShapeShift> reg = metadata;
00037 }
00038 
00039 bool SMSSpectralShapeShift::Do(const SpectralPeakArray& 
00040                         inPeaks,SpectralPeakArray& outPeaks)
00041 {
00042         if (!mConfig.GetPreserveOuts())
00043         {
00044                 outPeaks = inPeaks; //TODO big cludge for streaming
00045         }
00046 
00047         mSpectralEnvelope.SetSpectralRange(mSpectralRange);
00048         
00049         if (!mSpectralEnvelopeExtract.Do(inPeaks,mSpectralEnvelope))
00050                 return true; // Not enough peaks for an envelope
00051 
00052         TData amount = mSteps.GetLastValue();
00053 
00054         //Shift spectral shape
00055         BPF& magBPF=mSpectralEnvelope.GetMagBPF();
00056         int nPoints=magBPF.Size();
00057         for(int i=0;i<nPoints;i++)
00058         {
00059                 magBPF.SetXValue(i, magBPF.GetXValue(i)+amount);
00060         }
00061         magBPF.UpdateSplineTable();
00062         //Apply new spectral shape 
00063         mSpectralEnvelopeApply.Do(inPeaks,mSpectralEnvelope,outPeaks);
00064         return true;
00065 }
00066 
00067 
00068 }
00069 
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