Vocoder.hxx

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00001 
00002 /*
00003  * Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
00004  *                         UNIVERSITAT POMPEU FABRA
00005  *
00006  *
00007  * This program is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 2 of the License, or
00010  * (at your option) any later version.
00011  *
00012  * This program is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with this program; if not, write to the Free Software
00019  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00020  *
00021  */
00022 
00023 
00024 #ifndef _Vocoder_
00025 #define _Vocoder_
00026 
00027 #include "InPort.hxx"
00028 #include "OutPort.hxx"
00029 #include "InControl.hxx"
00030 #include "Frame.hxx"
00031 #include "FrameTransformation.hxx"
00032 #include "FrameTransformationConfig.hxx"
00033 #include "SimpleOscillator.hxx"
00034 
00035 namespace CLAM{
00036 
00037         class Vocoder: public FrameTransformationTmpl<Spectrum>
00038         {
00039                 InPort<Spectrum> mIn;
00040                 OutPort<Spectrum> mOut;
00041 
00042                 FloatInControl mBand0GainCtl;
00043                 FloatInControl mBand1GainCtl;
00044                 FloatInControl mBand2GainCtl;
00045                 FloatInControl mBand3GainCtl;
00046                 FloatInControl mNumBandsCtl;
00047                 FloatInControl mFreqShiftCtl;
00048                 
00049         public:
00050                 const char* GetClassName() const
00051                 {
00052                         return "Vocoder";
00053                 }
00054 
00055                 Vocoder() 
00056                         : mIn("In Spectrum", this)
00057                         , mOut("Out Spectrum", this)
00058                         , mBand0GainCtl("Band0Gain", this)
00059                         , mBand1GainCtl("Band1Gain", this)
00060                         , mBand2GainCtl("Band2Gain", this)
00061                         , mBand3GainCtl("Band3Gain", this)
00062                         , mNumBandsCtl("NumBands", this)
00063                         , mFreqShiftCtl("FreqShift", this)
00064                 {
00065                         Configure( FrameTransformationConfig() );
00066                 }
00067 
00068                 ~Vocoder() {}   
00069                 
00070                 bool InitControls()
00071                 {
00072                         mNumBandsCtl.DoControl(50);
00073                         return true;
00074                 }
00075                 
00076                 bool Do(const Frame& in, Frame& out)
00077                 {
00078                         return Do(in.GetSpectrum(), 
00079                                   out.GetSpectrum());
00080                 }
00081 
00082                 bool Do(const Spectrum& in, Spectrum& out);
00083 
00084                 bool Do()
00085                 {
00086                         bool result = Do(mIn.GetData(), mOut.GetData()); 
00087                         mIn.Consume();
00088                         mOut.Produce();
00089                         return result;
00090                 }
00091         private:
00092                 DataArray mMagBuffer;
00093         };              
00094 };//namespace CLAM
00095 
00096 #endif // _Vocoder_
00097 
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