metdetection.parsing

Class MidiWriter

java.lang.Object

metdetection.parsing.MidiWriter

public class MidiWriter
extends java.lang.Object

A MidiWriter is able to take in MidiNotes and a TimeTracker, and write them out to a valid Midi File.

This will write out the new file so that any anacrusis is now built into the file. That is, the first measure is extended with rests so that it becomes a full measure.

Author:

Andrew McLeod - 28 July, 2015

Field Summary

Fields

Modifier and Type	Field and Description
private int	offsetLength The length of the rests we will add to the beginning of this song, in ticks.
private java.io.File	outFile The File we want to write to.
private javax.sound.midi.Sequence	sequence The Sequence containing the Midi data we are going to write out.
private TimeTracker	timeTracker The TimeTracker for this Midi data.

Constructor Summary

Constructors

Constructor and Description
MidiWriter(java.io.File outFile, TimeTracker tt) Create a new MidiWriter to write out to the given File.

Method Summary

Methods

Modifier and Type	Method and Description
void	addMidiNote(MidiNote note) Add the given MidiNote into the sequence.
void	write() Actually write the data out to file.
private void	writeKeySignature(KeySignature keySignature, long tick) Write the given key signature out to sequence at the given tick.
private void	writeTempo(Tempo tempo, long tick) Write the given tempo out to sequence at the given tick.
private void	writeTimeSignature(TimeSignature timeSignature, long tick) Write the given time signature out to sequence at the given tick.
private void	writeTimeTracker() Write the proper TimeTracker events out to our sequence.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

outFile

private java.io.File outFile

The File we want to write to.

timeTracker

private TimeTracker timeTracker

The TimeTracker for this Midi data.

sequence

private javax.sound.midi.Sequence sequence

The Sequence containing the Midi data we are going to write out.

offsetLength

private int offsetLength

The length of the rests we will add to the beginning of this song, in ticks.

Constructor Detail

MidiWriter

public MidiWriter(java.io.File outFile,
          TimeTracker tt)
           throws javax.sound.midi.InvalidMidiDataException

Create a new MidiWriter to write out to the given File.

Parameters:

outFile - outFile

tt - timeTracker

Throws:

javax.sound.midi.InvalidMidiDataException - If somehow the TimeTracker has an invalid PPQ value.

Method Detail

writeTimeTracker

private void writeTimeTracker()
                       throws javax.sound.midi.InvalidMidiDataException

Write the proper TimeTracker events out to our sequence.

Throws:

javax.sound.midi.InvalidMidiDataException - If the TimeTracker contained invalid Midi data.

writeKeySignature

private void writeKeySignature(KeySignature keySignature,
                     long tick)
                        throws javax.sound.midi.InvalidMidiDataException

Write the given key signature out to sequence at the given tick.

Parameters:

keySignature - The key signature to write.

tick - The tick at which to write it.

Throws:

javax.sound.midi.InvalidMidiDataException - If the key signature produces invalid Midi data.

writeTimeSignature

private void writeTimeSignature(TimeSignature timeSignature,
                      long tick)
                         throws javax.sound.midi.InvalidMidiDataException

Write the given time signature out to sequence at the given tick.

Parameters:

timeSignature - The time signature to write.

tick - The tick at which to write it.

Throws:

javax.sound.midi.InvalidMidiDataException - If the time signature contained invalid Midi data.

writeTempo

private void writeTempo(Tempo tempo,
              long tick)
                 throws javax.sound.midi.InvalidMidiDataException

Write the given tempo out to sequence at the given tick.

Parameters:

tempo - The tempo to write.

tick - The tick at which to write it.

Throws:

javax.sound.midi.InvalidMidiDataException - If the tempo contained invalid Midi data.

addMidiNote

public void addMidiNote(MidiNote note)
                 throws javax.sound.midi.InvalidMidiDataException

Add the given MidiNote into the sequence.

Parameters:

note - The note to add.

Throws:

javax.sound.midi.InvalidMidiDataException - If the MidiNote contains invalid Midi data.

write

public void write()
           throws java.io.IOException

Actually write the data out to file.

Throws:

java.io.IOException - If the file cannot be written to.