Class AlsaMidiSequencerDevice

public static final AlsaMidiSequencerDevice instance

public int[] addControllerEventListener(ControllerEventListener listener,
                                        int[] controllers)

public boolean addMetaEventListener(MetaEventListener listener)

Add a meta event listening object to this sequencer. It will receive notification whenever the sequencer processes a meta event. A listener may fail to get added if this sequencer doesn't support meta events.

Specified by:

addMetaEventListener in interface Sequencer

Parameters:

listener - the listener to add

Returns:

true if listener was added, false othewise

public void close()

Close this MIDI device, and release any system resources we're using.

Specified by:

close in interface MidiDevice

close in interface AutoCloseable

public Info getDeviceInfo()

Get the Info object describing this device.

Specified by:

getDeviceInfo in interface MidiDevice

Returns:

the Info object describing this device

public static AlsaMidiSequencerDevice getInstance()

Return the sequencer singleton.

Returns:

the sequencer singleton

public SyncMode getMasterSyncMode()

Get the source of timing information.

Specified by:

getMasterSyncMode in interface Sequencer

Returns:

the current source of timing information

public SyncMode[] getMasterSyncModes()

Get an array of timing sources supported by this sequencer.

Specified by:

getMasterSyncModes in interface Sequencer

Returns:

an array of timing sources supported by this sequencer

public int getMaxReceivers()

The maximum number of MIDI IN connections we can get as Receivers, or -1 if there is no maximum.

Specified by:

getMaxReceivers in interface MidiDevice

Returns:

-1 or the maximum number of Receivers we can get

public int getMaxTransmitters()

The maximum number of MIDI OUT connections we can get as Transmitters, or -1 if there is no maximum.

Specified by:

getMaxTransmitters in interface MidiDevice

Returns:

-1 or the maximum number of Transmitters we can get

public long getMicrosecondLength()

Get the length of the current sequence in microseconds.

Specified by:

getMicrosecondLength in interface Sequencer

Returns:

the length of the current sequence in microseconds

public long getMicrosecondPosition()

Get the current playback position of the sequencer in microseconds.

Specified by:

getMicrosecondPosition in interface Sequencer

getMicrosecondPosition in interface MidiDevice

Returns:

the current playback position of the sequencer in microseconds

public Receiver getReceiver()
            throws MidiUnavailableException

Get a MIDI IN Receiver for this device.

Specified by:

getReceiver in interface MidiDevice

Returns:

a MIDI IN Receiver for this device

Throws:

MidiUnavailableException - if we can't get a Receiver

public Sequence getSequence()

Get the current sequence object for this sequencer.

Specified by:

getSequence in interface Sequencer

Returns:

the current sequence object. May be null.

public SyncMode getSlaveSyncMode()

Get the current slave synchronization mode.

Specified by:

getSlaveSyncMode in interface Sequencer

Returns:

the current slave synchronization mode

public SyncMode[] getSlaveSyncModes()

Get an array of slave sync modes supported by this sequencer.

Specified by:

getSlaveSyncModes in interface Sequencer

Returns:

an array of slave sync modes supported by this sequencer

public float getTempoFactor()

Get the current scaling factor for the playback tempo.

Specified by:

getTempoFactor in interface Sequencer

Returns:

the current tempo scaling factor

public float getTempoInBPM()

Get the current tempo in beats per minute.

Specified by:

getTempoInBPM in interface Sequencer

Returns:

the current tempo in beats per minute

public float getTempoInMPQ()

Get the current tempo in microseconds per quarter note.

Specified by:

getTempoInMPQ in interface Sequencer

Returns:

the current tempo in microseconds per quarter note.

public long getTickLength()

Get the length of the current sequence in MIDI ticks.

Specified by:

getTickLength in interface Sequencer

Returns:

the length of the current sequence in MIDI ticks

public long getTickPosition()

Get the current playback position of the sequencer in MIDI ticks.

Specified by:

getTickPosition in interface Sequencer

Returns:

the current playback position of the sequencer in MIDI ticks

public boolean getTrackMute(int track)

Get the mute state of a specific track.

Specified by:

getTrackMute in interface Sequencer

Parameters:

track - the track to query

Returns:

the mute state for track

public boolean getTrackSolo(int track)

Get the solo state for a specific track.

Specified by:

getTrackSolo in interface Sequencer

Parameters:

track - the track to query

Returns:

the solo state for track

public Transmitter getTransmitter()
            throws MidiUnavailableException

Get a MIDI OUT Transmitter for this device.

Specified by:

getTransmitter in interface MidiDevice

Returns:

a MIDI OUT Transmitter for this device

Throws:

MidiUnavailableException - if we can't get a Transmitter

public boolean isOpen()

Returns true if this MIDI device is open and false otherwise.

Specified by:

isOpen in interface MidiDevice

Returns:

true if this is open, false otherwise

public boolean isRecording()

Returns true if sequence is recording.

Specified by:

isRecording in interface Sequencer

Returns:

true if the sequence is recording and false otherwise

public boolean isRunning()

Returns true if the sequence is playing.

Specified by:

isRunning in interface Sequencer

Returns:

true if the sequence is playing and false otherwise

public void open()
            throws MidiUnavailableException

Open this MIDI device and allocate any system resource we need.

Specified by:

open in interface MidiDevice

Throws:

MidiUnavailableException - if we're not able to open for some reason

public void recordDisable(Track track)

Disable recording for a specific track.

Specified by:

recordDisable in interface Sequencer

Parameters:

track - the track to disable recording for

public void recordEnable(Track track,
                         int channel)

Enable recording for a specific track using data from a specific channel.

Specified by:

recordEnable in interface Sequencer

Parameters:

track - the track to enable for recording

channel - the channel from which to record

public int[] removeControllerEventListener(ControllerEventListener listener,
                                           int[] controllers)

public void removeMetaEventListener(MetaEventListener listener)

Remove a meta event listener from this sequencer.

Specified by:

removeMetaEventListener in interface Sequencer

Parameters:

listener - the listener to remove

public void setMasterSyncMode(SyncMode sync)

public void setMicrosecondPosition(long microsecond)

Set the current playback position of the sequencer in microseconds.

Specified by:

setMicrosecondPosition in interface Sequencer

Parameters:

microsecond - the new playback position of the sequencer in microseconds

public void setSequence(InputStream istream)
            throws IOException,
                   InvalidMidiDataException

Set the sequence for this sequencer. istream reads on a valid MIDI file.

Specified by:

setSequence in interface Sequencer

Parameters:

istream - an input stream for a valid MIDI file

Throws:

IOException - if an I/O exception happens

InvalidMidiDataException - if the MIDI file contains bad data

public void setSequence(Sequence seq)
            throws InvalidMidiDataException

Set the Sequence object for this sequencer.

Specified by:

setSequence in interface Sequencer

Parameters:

seq - the Sequence to process

Throws:

InvalidMidiDataException - if the sequence is invalid for any reason

public void setSlaveSyncMode(SyncMode sync)

public void setTempoFactor(float factor)

Set a scaling factor for the playback tempo, which is 1.0 by default.

Specified by:

setTempoFactor in interface Sequencer

Parameters:

factor - the new tempo scaling factor

public void setTempoInBPM(float bpm)

Sets the current tempo in beats per minute.

Specified by:

setTempoInBPM in interface Sequencer

Parameters:

bpm - the new tempo in bears per minutes

public void setTempoInMPQ(float mpq)

Sets the current tempo in microseconds per quarter note.

Specified by:

setTempoInMPQ in interface Sequencer

Parameters:

mpq - the new tempo in microseconds per quarter note.

public void setTickPosition(long tick)

Set the current playback position of the sequencer in MIDI ticks.

Specified by:

setTickPosition in interface Sequencer

Parameters:

tick - the new playback position of the sequencer in MIDI ticks

public void setTrackMute(int track,
                         boolean mute)

Sets the mute state for a specific track.

Specified by:

setTrackMute in interface Sequencer

Parameters:

track - the track to modify

mute - the new mute state

public void setTrackSolo(int track,
                         boolean solo)

Sets the solo state for a specific track.

Specified by:

setTrackSolo in interface Sequencer

Parameters:

track - the track to modify

solo - the new solo state

public void start()

Start playback of the current sequence.

Specified by:

start in interface Sequencer

public void startRecording()

Start playback and record of MIDI events. Any tracks enabled for recording will have their events replaced. Any newly recorded events, and all events from non-recording tracks will be sent to the sequencer's transmitter.

Specified by:

startRecording in interface Sequencer

public void stop()

Stop playback of the current sequence.

Specified by:

stop in interface Sequencer

public void stopRecording()

Stop recording, although continue playing.

Specified by:

stopRecording in interface Sequencer