/usr/include/CLAM/Fund2MIDI.hxx is in libclam-dev 1.4.0-5.2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef _Fund2MIDI_
#define _Fund2MIDI_
#include "DataTypes.hxx"
#include "Processing.hxx"
#include "ProcessingConfig.hxx"
#include "InPort.hxx"
#include "OutControl.hxx"
#include "OutControl.hxx"
#include "Fundamental.hxx"
#include "MIDIMessage.hxx"
namespace CLAM
{
/** \brief Converts fundamental to a MIDI note value
*
* Things to know:
* C4 or "middle c" has a MIDI value of 60, then A4 (440Hz) has a MIDI value of 69
* Taking that in account you can arrive to:
* \f$ fund_{midinote} = 69+log_{2^{(\frac{1}{12})}}(\frac{fundfrec}{440Hz}) \f$ and because
* \f$ log_{2^{\frac{1}{12}}}(a) = log_{e}(a)*17.31234 \f$ then:
* \f$ fund_{midinote} = 69+log_{e}(\frac{fundfrec}{440Hz})*17.31234 \f$.
*/
class Fund2MIDI : public Processing
{
InPort< Fundamental > mInFund;
FloatOutControl mFreqControlOut;
OutControl< MIDI::Message > mOutputMIDIMessage;
Config mConfig;
TSize _previousNote; ///< MIDI note previously sent
public:
const char *GetClassName() const { return "Fund2MIDI"; }
Fund2MIDI( const ProcessingConfig & cfg = Config() )
: mInFund("In Fundamental", this)
, mFreqControlOut("Frequency", this)
, mOutputMIDIMessage("MIDI Message Out", this)
, _previousNote(0)
{
Configure( cfg );
}
bool Do()
{
bool result = Do( mInFund.GetData() );
mInFund.Consume();
return result;
}
bool Do( const Fundamental& inFund );
};
}
#endif
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