CLAM-Development  1.4.0
SMSSpectralShapeShift.cxx
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1 /*
2  * Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
3  * UNIVERSITAT POMPEU FABRA
4  *
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  *
20  */
21 
23 #include "ProcessingFactory.hxx"
24 
25 namespace CLAM
26 {
27 
28 namespace Hidden
29 {
30  static const char * metadata[] = {
31  "key", "SMSSpectralShapeShift",
32  "category", "SMS Transformations",
33  "description", "SMSSpectralShapeShift",
34  0
35  };
36  static FactoryRegistrator<ProcessingFactory, SMSSpectralShapeShift> reg = metadata;
37 }
38 
40  inPeaks,SpectralPeakArray& outPeaks)
41 {
42  if (!mConfig.GetPreserveOuts())
43  {
44  outPeaks = inPeaks; //TODO big cludge for streaming
45  }
46 
47  mSpectralEnvelope.SetSpectralRange(mSpectralRange);
48 
49  if (!mSpectralEnvelopeExtract.Do(inPeaks,mSpectralEnvelope))
50  return true; // Not enough peaks for an envelope
51 
52  TData amount = mSteps.GetLastValue();
53 
54  //Shift spectral shape
55  BPF& magBPF=mSpectralEnvelope.GetMagBPF();
56  int nPoints=magBPF.Size();
57  for(int i=0;i<nPoints;i++)
58  {
59  magBPF.SetXValue(i, magBPF.GetXValue(i)+amount);
60  }
61  magBPF.UpdateSplineTable();
62  //Apply new spectral shape
63  mSpectralEnvelopeApply.Do(inPeaks,mSpectralEnvelope,outPeaks);
64  return true;
65 }
66 
67 
68 }
69