net.sf.jack4j.examples
Class MidiSine

java.lang.Object
  net.sf.jack4j.JackClient
      net.sf.jack4j.AbstractJackClient
          net.sf.jack4j.examples.MidiSine

public class MidiSine
extends AbstractJackClient

Very simple MIDI synthesizer.

See comments in the code that describe the usage of Jack4j library.

To run the examples, you need to have the native Jack4j library in your system load path (LD_LIBRARY_PATH under Linux).

This example client expects single command line parameter - client name.

Author:

repa

Constructor Summary

MidiSine(java.lang.String clientName, boolean useExactName, boolean canStartServer, java.lang.String serverName)

Method Summary

static void	main(java.lang.String[] args)
int	process(int bufferSize) This is callback method, invoked by Jack client thread during each process cycle.
void	run() Activation and main event loop.

Methods inherited from class net.sf.jack4j.AbstractJackClient

bufferSizeCallback, clientRegistrationCallback, freewheelCallback, graphOrderCallback, portConnectCallback, portRegistrationCallback, sampleRateCallback, threadInitCallback, xRunCallback

Methods inherited from class net.sf.jack4j.JackClient

activate, addAudioPort, addMidiPort, addPort, close, connect, cpuLoad, deactivate, disconnect, finalize, framesSinceCycleStart, framesToTime, frameTime, getAllPortConnections, getBufferSize, getCallbackStruct, getClientHandle, getClientName, getClientThread, getPorts, getPorts, getSampleRate, getStatistics, getTotalPortLatency, internalClientByName, isActive, isMine, isOpen, isProcessMethodSynchronized, isRealtime, isShutdown, lastFrameTime, loadInternalClient, localPort, localPortNames, portById, portByName, recomputeTotalLatencies, recomputeTotalPortLatency, removePort, requestPortMonitorByName, setAllDefaultCallbacks, setBufferSize, setBufferSizeCallback, setClientRegistrationCallback, setDefaultBufferSizeCallback, setDefaultClientRegistrationCallback, setDefaultFreewheelCallback, setDefaultGraphOrderCallback, setDefaultPortConnectCallback, setDefaultPortRegistrationCallback, setDefaultProcessCallback, setDefaultSampleRateCallback, setDefaultShutdownCallback, setDefaultThreadInitCallback, setDefaultXRunCallback, setFreewheel, setFreewheelCallback, setGraphOrderCallback, setPortConnectCallback, setPortRegistrationCallback, setProcessCallback, setProcessMethodSynchronized, setSampleRateCallback, setShutdownCallback, setThreadInitCallback, setXRunCallback, threadWait, time, timeToFrames

Methods inherited from class java.lang.Object

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

Constructor Detail

MidiSine

public MidiSine(java.lang.String clientName,
                boolean useExactName,
                boolean canStartServer,
                java.lang.String serverName)
         throws JackException

Throws:

JackException

Method Detail

process

public int process(int bufferSize)
            throws java.lang.Exception

This is callback method, invoked by Jack client thread during each process cycle.

This method receives MIDI events and produces the sound.

The method is expected to put bufferSize samples into buffer associated with the output audio port.

The method also reads MIDI events from the buffer associated with the input MIDI port,

Ports were created earlier, during client initialization.

Overrides:

process in class AbstractJackClient

Throws:

java.lang.Exception

See Also:

JackClient.process(int)

run

public void run()
         throws JackException

Activation and main event loop.

Throws:

JackException

main

public static void main(java.lang.String[] args)
                 throws java.lang.Exception

Throws:

java.lang.Exception