CLAM-Development
1.1
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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 "SpectralDelay.hxx" 00023 #include "ProcessingFactory.hxx" 00024 00025 namespace CLAM 00026 { 00027 00028 namespace Hidden 00029 { 00030 static const char * metadata[] = { 00031 "key", "SpectralDelay", 00032 "category", "Spectral Transformations", 00033 "description", "SpectralDelay", 00034 0 00035 }; 00036 static FactoryRegistrator<ProcessingFactory, SpectralDelay> reg = metadata; 00037 } 00038 00039 00040 00041 bool SpectralDelay::Do(const Spectrum& in, Spectrum& out) 00042 { 00043 if ( !mConfig.GetPreserveOuts() ) 00044 { 00045 out = in; //TODO big cludge for streaming 00046 } 00047 00048 //first convert from ms to token size 00049 //mFrameSize should be set somehow in the configuration! It is the difference between one frame center and the next 00050 mFrameSize = 1024; 00051 00052 00053 TData lfDelay = mLowDelayCtl.GetLastValue() * in.GetSpectralRange() * 0.002 / mFrameSize; 00054 TData mfDelay = mMidDelayCtl.GetLastValue() * in.GetSpectralRange() * 0.002 / mFrameSize; 00055 TData hfDelay = mHighDelayCtl.GetLastValue() * in.GetSpectralRange() * 0.002 / mFrameSize; 00056 00057 //these controls could just be connected at the beginning 00058 SendFloatToInControl(mLFDelay,"Delay Control",lfDelay); 00059 SendFloatToInControl(mMFDelay,"Delay Control",mfDelay); 00060 SendFloatToInControl(mHFDelay,"Delay Control",hfDelay); 00061 00062 //now we are ready to get the appropriate spectrums 00063 mLFDelay.Do(in, mLFSpectrum); 00064 mMFDelay.Do(in, mMFSpectrum); 00065 mHFDelay.Do(in, mHFSpectrum); 00066 00067 DataArray& hfMag = mHFSpectrum.GetMagBuffer(); 00068 DataArray& hfPhase = mHFSpectrum.GetPhaseBuffer(); 00069 DataArray& mfMag = mMFSpectrum.GetMagBuffer(); 00070 DataArray& mfPhase = mMFSpectrum.GetPhaseBuffer(); 00071 DataArray& lfMag = mLFSpectrum.GetMagBuffer(); 00072 DataArray& lfPhase = mLFSpectrum.GetPhaseBuffer(); 00073 00074 DataArray& oMag = out.GetMagBuffer(); 00075 DataArray& oPhase = out.GetPhaseBuffer(); 00076 00077 int spectrumSize = in.GetSize(); 00078 00079 TData spectralResolution = spectrumSize/in.GetSpectralRange(); 00080 00081 int lowCutoff = Round(mLowCutoffFreqCtl.GetLastValue()* spectralResolution); 00082 int highCutoff = Round(mHighCutoffFreqCtl.GetLastValue()* spectralResolution); 00083 00084 for(int i = 0; i<spectrumSize; i++) 00085 { 00086 if(i>highCutoff) 00087 { 00088 oMag[i] = hfMag[i]; 00089 oPhase[i] = hfPhase[i]; 00090 } 00091 else if(i>lowCutoff) 00092 { 00093 oMag[i] = mfMag[i]; 00094 oPhase[i] = mfPhase[i]; 00095 } 00096 else 00097 { 00098 oMag[i] = lfMag[i]; 00099 oPhase[i] = lfPhase[i]; 00100 } 00101 } 00102 return true; 00103 } 00104 00105 00106 } 00107