metdetection.parsing

Class NoteListGenerator

java.lang.Object

metdetection.parsing.NoteListGenerator

All Implemented Interfaces:

NoteEventParser

public class NoteListGenerator
extends java.lang.Object
implements NoteEventParser

A NoteListGenerator parses Note On and Note Off events and generates a List of the MidiNotes present in any given song.

Author:

Andrew McLeod - 11 Feb, 2015

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.LinkedList<MidiNote>	activeNotes A list of the MidiNotes which have not yet been closed.
private java.util.List<MidiNote>	completedNotes A list of MidiNotes which have already been closed.
protected TimeTracker	timeTracker The TimeTracker for this NoteListGenerator.

Constructor Summary

Constructors

Constructor and Description
NoteListGenerator(TimeTracker timeTracker) Creates a new NoteListGenerator with the given TimeTracker.

Method Summary

Methods

Modifier and Type	Method and Description
java.util.List<java.util.List<MidiNote>>	getIncomingLists() Returns a List of the incoming note lists.
java.util.List<MidiNote>	getNoteList() Returns a list of the notes present in this song, in time order.
void	noteOff(int key, long tick, int channel) Process a Note Off event.
MidiNote	noteOn(int key, int velocity, long tick, int channel) Process a Note On event.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

activeNotes

private java.util.LinkedList<MidiNote> activeNotes

A list of the MidiNotes which have not yet been closed.

completedNotes

private java.util.List<MidiNote> completedNotes

A list of MidiNotes which have already been closed.

timeTracker

protected TimeTracker timeTracker

The TimeTracker for this NoteListGenerator.

Constructor Detail

NoteListGenerator

public NoteListGenerator(TimeTracker timeTracker)

Creates a new NoteListGenerator with the given TimeTracker.

Parameters:

timeTracker -

Method Detail

noteOn

public MidiNote noteOn(int key,
              int velocity,
              long tick,
              int channel)

Description copied from interface: NoteEventParser

Process a Note On event.

Specified by:

noteOn in interface NoteEventParser

Parameters:

key - The key pressed. This will be a number between 1 and 88 for piano.

velocity - The velocity of the press. This is a value between 1 and 127 inclusive.

tick - The midi tick location of this event.

channel - The midi channel this note came from.

Returns:

The MidiNote we just created.

noteOff

public void noteOff(int key,
           long tick,
           int channel)
             throws javax.sound.midi.InvalidMidiDataException

Description copied from interface: NoteEventParser

Process a Note Off event.

Specified by:

noteOff in interface NoteEventParser

Parameters:

key - The midi key which has been turned off. This value is between 39 and 127, inclusive, for piano.

tick - The midi tick location of this event.

channel - The midi channel this note came from.

Throws:

javax.sound.midi.InvalidMidiDataException - If a note off event doesn't match any previously seen note on events.

getNoteList

public java.util.List<MidiNote> getNoteList()

Returns a list of the notes present in this song, in time order.

Returns:

A list of the notes present as described above.

getIncomingLists

public java.util.List<java.util.List<MidiNote>> getIncomingLists()

Returns a List of the incoming note lists. This is exactly the sequence of note lists which should be fed into the MidiModel.handleIncoming(List) method.

Returns:

A List of incoming note lists, where each individual list contains all of the notes which onset at a particular time, sorted by offset time, and the list of listsis itself sorted by onset time.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object