net.sf.jack4j.examples
Class MidiSine

java.lang.Object
  extended by net.sf.jack4j.JackClient
      extended by net.sf.jack4j.AbstractJackClient
          extended by 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


Copyright © 2008 Ondrej Par. All Rights Reserved.