/usr/include/tse3/Metronome.h is in libtse3-dev 0.3.1-4.3.
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* @(#)Metronome.h 3.00 25 May 1999
*
* Copyright (c) 2000 Pete Goodliffe (pete@cthree.org)
*
* This file is part of TSE3 - the Trax Sequencer Engine version 3.00.
*
* This library is modifiable/redistributable under the terms of the GNU
* General Public License.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING. If not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
*/
#ifndef TSE3_METRONOME_H
#define TSE3_METRONOME_H
#include "tse3/listen/Metronome.h"
#include "tse3/Notifier.h"
#include "tse3/Playable.h"
namespace TSE3
{
/**
* This class provides the functionality of a metronome.
*
* The metronome remembers whether it should be produced in playing and
* recording modes, but it doesn't enforce this itself - it is the
* responsibility of the @ref Transport playback routines.
*
* There are two different metronome ticks that are produced, for bars
* and beats. They must have the same MIDI channel, port, and duration, but
* can have different notes and velocities.
*
* To determine the point at which clocks bar ticks are produced, a bar
* reference exists.
*
* @short Metronome tick object
* @author Pete Goodliffe
* @version 3.00
* @see Playable
*/
class Metronome : public Playable,
public Notifier<MetronomeListener>
{
public:
/**
* Constructs a Metronome with default tick.
*/
Metronome();
virtual ~Metronome();
/**
* Returns the metronome MIDI channel.
*
* @return Metronome MIDI channel
* @see setChannel
*/
int channel() const { return _channel; }
/**
* Sets the metronome MIDI channel.
*
* @param c New metronome MIDI channel
* @see channel
*/
void setChannel(int c);
/**
* Returns the metronome MIDI port.
*
* @return Metronome MIDI port
* @see setPort
*/
int port() const { return _port; }
/**
* Sets the metronome MIDI port.
*
* @param p New metronome MIDI port
* @see port
*/
void setPort(int p);
/**
* Returns the metronome duration.
*
* @return Metronome tick duration
* @see setDuration
*/
int duration() const { return _duration; }
/**
* Sets the metronome duration.
*
* @param p New metronome tick duration
* @see duration
*/
void setDuration(int d);
/**
* Returns the metronome bar note. This is the note that is played
* on a metronome tick that occurs at the start of a bar.
*
* @return Metronome bar note
* @see setBarNote
* @see setBeatNote
* @see setBarVelocity
*/
int barNote() const { return _barNote; }
/**
* Sets the metronome bar note.
*
* @param n New metronome bar note
* @see barNote
* @see beatNote
* @see barVelocity
*/
void setBarNote(int n);
/**
* Returns the metronome bar velocity.
*
* @return Metronome bar velocity
* @see setBarVelocity
* @see setBeatVelocity
* @see setBarNote
*/
int barVelocity() const { return _barVelocity; }
/**
* Sets the metronome bar velocity.
*
* @param v New metronome bar velocity
* @see barVelocity
* @see beatVelocity
* @see barNote
*/
void setBarVelocity(int v);
/**
* Returns the metronome beat note. This is the note that is played
* on a metronome tick that does not occur at the start of a bar.
*
* @return Metronome beat note
* @see setBeatNote
* @see setBarNote
* @see setBeatVelocity
*/
int beatNote() const { return _beatNote; }
/**
* Sets the metronome beat note.
*
* @param n New metronome beat note
* @see beatNote
* @see barNote
* @see beatVelocity
*/
void setBeatNote(int n);
/**
* Returns the metronome beat velocity.
*
* @return Metronome beat velocity
* @see setBeatVelocity
* @see setBarVelocity
* @see setBeatNote
*/
int beatVelocity() const { return _beatVelocity; }
/**
* Sets the metronome bar velocity.
*
* @param v New metronome bar velocity
* @see beatrVelocity
* @see barVelocity
* @see beatNote
*/
void setBeatVelocity(int v);
/**
* Returns the metronome playing status for a given @ref Transport
* object status mode.
*
* @param mode @ref Transport object status mode
* @return Whether metronome is produced in this mode
* @see setStatus
*/
bool status(int mode) const
{
return _status & (1<<mode);
}
/**
* Sets the metronome playing status for a given transport mode.
*
* @param mode @ref Transport object status mode
* @param s New metronome playing status
* @see status
*/
void setStatus(int mode, bool s);
/**
* Returns the metronome beats per bar value.
*
* A normal TSE3 library user need not worry about this method.
*
* The @ref Transport object uses this value to tell the metronome
* the current time signtaure information. The value represents
* the number of quarter notes in a bar. It is used in conjuction
* with the barReference to determine which metronome ticks are
* 'bar' and which are 'beat'.
*
* @internal
* @return Metronome beats per bar value
* @see setBeatsPerBar
*/
int beatsPerBar() const { return _beatsPerBar; }
/**
* Sets the metronome beats per bar value.
*
* A normal TSE3 library user need not worry about this method.
*
* @internal
* @param bpb New beats per bar value
* @see beatsPerBar
*/
void setBeatsPerBar(int bpb);
/**
* Returns the metronome bar reference clock.
*
* A normal TSE3 library user need not worry about this method.
*
* This is the time value of some accented 'bar' note. This
* tells the Metronome object when to create a 'bat' tick and
* when to create a 'beat' tick when used in conjuction with the
* @ref beatsPerBar method.
*
* @internal
* @return A bar tick reference time
* @see setBarReference
* @see beatsPerBar
*
*/
Clock barReference() const { return _barReference; }
/**
* Sets the metronome bar reference clock.
*
* A normal TSE3 library user need not worry about this method.
*
* @internal
* @param br New bar tick reference time
* @see barReferenceTime
*/
void setBarReference(Clock br);
/**
* @reimplemented
*/
virtual PlayableIterator *iterator(Clock index);
/**
* @reimplemented
*/
virtual Clock lastClock() const;
friend class MetronomeIterator;
private:
Metronome &operator=(const Metronome &);
Metronome(const Metronome &);
void calculateCommands();
int _channel, _port;
int _status;
Clock _duration;
int _barNote, _barVelocity;
int _beatNote, _beatVelocity;
int _beatsPerBar;
Clock _barReference;
MidiCommand barNoteOn, barNoteOff; // Cached commands calculated
MidiCommand beatNoteOn, beatNoteOff; // by calculateCommands
Clock pos; // Playable support
};
}
#endif
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