midi4j

Midi Sound Files Player and Meta Info Parser

Java implementation of a Midi file Player & Midi Meta Info Parser Library. This implementation is using vanilla Java classes without any 3rd party libraries.

If you just want to play a Midi file and don't want to delve into the midi classes (Like the Sequencer, Synthesizer, Tracks etc), then just use the Midi class, point it to your Midi file and use the play() method to play it, togglePause() to unqpause or navigate to any place in the Midi file jumpToPosition(long milliseconds).

If you want to parse a Midi file, to read the MetaData written about it, from a Disclaimer, to copyright notice, through titles and the track messages then just use the MidiInfo class and call the relevant methods.

Methods names are self-explanatory, and JavaDocs exist - these are your friends.

midi4j was created with convenience and simplicity in mind, so it consists of only those two important files.

Midi.java - which is used to play/pause/jumpToPosition the Midi file.

MidiInfo.java - is used to parse the Meta Information from the Midi file (if midi info was indeed put into the Midi file)

Maven

<dependency>
<groupId>org.chaiware</groupId>
<artifactId>midi4j</artifactId>
<version>1.0</version>
</dependency>

Examples

(A complete example with additional functionality can be found in the `Midi4jExample.java` file)

Midi Player Example

Midi midi = new Midi($PATH_TO_MIDI_FILE$);
midi.play(); // Plays Asynchronously
midi.jumpToPositionInMS(midi.getCurrentPositionInMS() + 50000); // Jumps forward
while (midi.isPlaying())
Thread.sleep(250);
midi.shutdown();

Midi Info Example

MidiInfo midiInfo = new MidiInfo($PATH_TO_MIDI_FILE$);
Map<MidiMetaMessageType, String> metaInfo = midiInfo.getAllMetaInfo();
for (Map.Entry<MidiMetaMessageType, String> entry : metaInfo.entrySet())
System.out.println(entry.getKey().getReadableMetaName() + "\n" + entry.getValue() + "\n\n");

Simple Project Using Midi4j

You can see a simple project using midi4j here: FloppyMidiPlayer
The above project uses midi4j in order to play Midi files from Floppy diskettes

Its code is simple to understand, it scans the floppy diskette and plays all the midi files it finds in it, while enabling navigation in the Midi file, pausing it and looking at the MetaInfo in the Midi file.

Chaiavi/midi4j