Java MidiUtils类代码示例

import com.sun.media.sound.MidiUtils; //导入依赖的package包/类
private ImmutableEndOfTrack() {
    super(new byte[3]);
    data[0] = (byte) META;
    data[1] = MidiUtils.META_END_OF_TRACK_TYPE;
    data[2] = 0;
}
 

import com.sun.media.sound.MidiUtils; //导入依赖的package包/类
private void updateTempoLabel()
{
	int mpq = sequenceInfo.getDataCache().getTempoMPQ(sequencer.getThumbTick());
	int bpm = (int) Math.round(MidiUtils.convertTempo(mpq) * getCurrentTempoFactor());
	if (bpm != lastRenderedBPM)
	{
		currentTempoLabel.setText(bpm + " BPM ");
		lastRenderedBPM = bpm;
	}
}
 

import com.sun.media.sound.MidiUtils; //导入依赖的package包/类
private int tempoToNoteId(int tempoMPQ, int minBPM, int maxBPM)
{
	int bpm = (int) Math.round(MidiUtils.convertTempo(tempoMPQ));

	float tempoFactor = getCurrentTempoFactor();
	minBPM = Math.round(minBPM * tempoFactor);
	maxBPM = Math.round(maxBPM * tempoFactor);
	bpm = Math.round(bpm * tempoFactor);

	return (bpm - minBPM) * (Note.MAX.id - Note.MIN.id) / (maxBPM - minBPM) + Note.MIN.id;
}
 

import com.sun.media.sound.MidiUtils; //导入依赖的package包/类
public static SequenceInfo fromAbc(AbcToMidi.Params params) throws InvalidMidiDataException, ParseException
{
	if (params.abcInfo == null)
		params.abcInfo = new AbcInfo();
	SequenceInfo sequenceInfo = new SequenceInfo(params.filesData.get(0).file.getName(), AbcToMidi.convert(params));
	sequenceInfo.title = params.abcInfo.getTitle();
	sequenceInfo.composer = params.abcInfo.getComposer();
	sequenceInfo.primaryTempoMPQ = (int) Math.round(MidiUtils.convertTempo(params.abcInfo.getPrimaryTempoBPM()));
	return sequenceInfo;
}
 

import com.sun.media.sound.MidiUtils; //导入依赖的package包/类
@Override public long tickToMicros(long tick)
{
	if (divisionType != Sequence.PPQ)
		return (long) (TimingInfo.ONE_SECOND_MICROS * ((double) tick / (double) (divisionType * tickResolution)));

	TempoEvent te = getTempoEventForTick(tick);
	return te.micros + MidiUtils.ticks2microsec(tick - te.tick, te.tempoMPQ, tickResolution);
}
 

import com.sun.media.sound.MidiUtils; //导入依赖的package包/类
@Override public long microsToTick(long micros)
{
	if (divisionType != Sequence.PPQ)
		return (long) (divisionType * tickResolution * micros / (double) TimingInfo.ONE_SECOND_MICROS);

	TempoEvent te = getTempoEventForMicros(micros);
	return te.tick + MidiUtils.microsec2ticks(micros - te.micros, te.tempoMPQ, tickResolution);
}
 

import com.sun.media.sound.MidiUtils; //导入依赖的package包/类
@Override public long microsToTick(long micros)
{
	if (getSequence() == null)
		return 0;

	return MidiUtils.microsecond2tick(getSequence(), micros, tempoCache);
}
 

import com.sun.media.sound.MidiUtils; //导入依赖的package包/类
@Override public long tickToMicros(long tick)
{
	if (getSequence() == null)
		return 0;

	return MidiUtils.tick2microsecond(getSequence(), tick, tempoCache);
}
 

import com.sun.media.sound.MidiUtils; //导入依赖的package包/类
public long getDragTick()
{
	if (getSequence() == null)
		return 0;

	return MidiUtils.microsecond2tick(getSequence(), getDragPosition(), tempoCache);
}
 

import com.sun.media.sound.MidiUtils; //导入依赖的package包/类
public void setDragTick(long tick)
{
	if (getSequence() == null)
		return;

	setDragPosition(MidiUtils.tick2microsecond(getSequence(), tick, tempoCache));
}
 

import com.sun.media.sound.MidiUtils; //导入依赖的package包/类
@Override public long tickToMicrosecond(long tick) {
	//recompute tempo cache if required
	if (tempoCache == null)
		tempoCache = new TempoCache(sequence);
	//compute position
  return MidiUtils.tick2microsecond(sequence, tick, tempoCache);
}
 

import com.sun.media.sound.MidiUtils; //导入依赖的package包/类
/**
 * Obtains the duration of this sequence, expressed in microseconds.
 * @return this sequence's duration in microseconds.
 */
public long getMicrosecondLength() {

    return com.sun.media.sound.MidiUtils.tick2microsecond(this, getTickLength(), null);
}
 

import com.sun.media.sound.MidiUtils; //导入依赖的package包/类
public TempoPanel(SequenceInfo sequenceInfo, SequencerWrapper sequencer, SequencerWrapper abcSequencer)
{
	super(new TableLayout(LAYOUT_COLS, LAYOUT_ROWS));

	TableLayout tableLayout = (TableLayout) getLayout();
	tableLayout.setHGap(TrackPanel.HGAP);

	setBorder(BorderFactory.createMatteBorder(0, 0, 1, 0, ColorTable.PANEL_BORDER.get()));

	this.sequenceInfo = sequenceInfo;
	this.sequencer = sequencer;
	this.abcSequencer = abcSequencer;

	int minBPM = 50;
	int maxBPM = 200;
	for (TempoEvent event : sequenceInfo.getDataCache().getTempoEvents().values())
	{
		int bpm = (int) Math.round(MidiUtils.convertTempo(event.tempoMPQ));
		if (bpm < minBPM)
			minBPM = bpm;
		if (bpm > maxBPM)
			maxBPM = bpm;
	}

	JPanel gutter = new JPanel();
	gutter.setOpaque(true);
	gutter.setBackground(ColorTable.PANEL_HIGHLIGHT_OTHER_PART.get());

	this.tempoGraph = new TempoNoteGraph(sequenceInfo, sequencer, minBPM, maxBPM);
	setBackground(ColorTable.GRAPH_BACKGROUND_DISABLED.get());

	JLabel titleLabel = new JLabel("Tempo");
	titleLabel.setBorder(BorderFactory.createEmptyBorder(0, 20, 0, 0));
	titleLabel.setFont(titleLabel.getFont().deriveFont(Font.BOLD));
	titleLabel.setForeground(ColorTable.PANEL_TEXT_DISABLED.get());

	currentTempoLabel = new JLabel();
	currentTempoLabel.setForeground(ColorTable.PANEL_TEXT_DISABLED.get());
	updateTempoLabel();

	add(gutter, GUTTER_COLUMN + ", 0");
	add(titleLabel, TITLE_COLUMN + ", 0");
	add(currentTempoLabel, TEMPO_COLUMN + ", 0, R, C");
	add(tempoGraph, GRAPH_COLUMN + ", 0");

	sequencer.addChangeListener(sequencerListener);
	abcSequencer.addChangeListener(sequencerListener);
}
 

import com.sun.media.sound.MidiUtils; //导入依赖的package包/类
/**
 * Rounds the given MPQ tempo so it corresponds to a whole-number of beats per minute.
 */
public static double roundTempoMPQ(double tempoMPQ)
{
	return MidiUtils.convertTempo(Math.round(MidiUtils.convertTempo(tempoMPQ)));
}
 

import com.sun.media.sound.MidiUtils; //导入依赖的package包/类
public int getTempoBPM()
{
	return (int) Math.round(MidiUtils.convertTempo(tempoMPQ));
}