Java MidiDevice.getTransmitter方法代码示例

import javax.sound.midi.MidiDevice; //导入方法依赖的package包/类
public MidiReciever()
    {
        MidiDevice device;
        MidiDevice.Info[] infos = MidiSystem.getMidiDeviceInfo();
        for (int i = 0; i < infos.length; i++) {
            try {
            device = MidiSystem.getMidiDevice(infos[i]);
            //does the device have any transmitters?
            //if it does, add it to the device list
            System.out.println(infos[i]);

            //get all transmitters
            List<Transmitter> transmitters = device.getTransmitters();
            //and for each transmitter

            for(int j = 0; j<transmitters.size();j++) {
                //create a new receiver
                transmitters.get(j).setReceiver(
                        //using my own MidiInputReceiver
                        new MidiInputReceiver(device.getDeviceInfo().toString())
                );
            }

            Transmitter trans = device.getTransmitter();
            trans.setReceiver(new MidiInputReceiver(device.getDeviceInfo().toString()));

            //open each device
            device.open();
            //if code gets this far without throwing an exception
            //print a success message
            System.out.println(device.getDeviceInfo()+" Was Opened");


        } catch (MidiUnavailableException e) {}
    }


}
 

import javax.sound.midi.MidiDevice; //导入方法依赖的package包/类
private static boolean testDevice(MidiDevice device, Class type,
        String providerClassName, String instanceName,
        boolean expectedResult) {
    boolean allOk = true;

    try {
        String propertyName = type.getName();
        String propertyValue = (providerClassName != null) ? providerClassName: "" ;
        propertyValue += "#" + instanceName;
        out("property: " + propertyName + "="+ propertyValue);
        System.setProperty(propertyName, propertyValue);
        Object reference = null;
        Object result = null;
        if (type == SEQUENCER_CLASS) {
            reference = device;
            result = MidiSystem.getSequencer();
        } else if (type == SYNTHESIZER_CLASS) {
            reference = device;
            result = MidiSystem.getSynthesizer();
        } else if (type == RECEIVER_CLASS) {
            reference = device.getReceiver();
            result = MidiSystem.getReceiver();
        } else if (type == TRANSMITTER_CLASS) {
            reference = device.getTransmitter();
            result = MidiSystem.getTransmitter();
        }
        out("result: " + result);
        boolean rightDevice = (reference.getClass() == result.getClass());
        if (rightDevice != expectedResult) {
            out("\nERROR: type " + type + " failed:"
                    + " class should" + (expectedResult ? "" : " NOT") + " be '"
                    + reference.getClass()
                    + "' but is '" + result.getClass() + "'!\n");
            allOk = false;
        }
        if (expectedResult
                && reference instanceof MidiDevice
                && result instanceof MidiDevice) {
            MidiDevice referenceDevice = (MidiDevice)reference;
            MidiDevice resultDevice = (MidiDevice)result;
            if (!referenceDevice.getDeviceInfo().getName().equals(
                                resultDevice.getDeviceInfo().getName())) {
                out("\nERROR: type " + type + " failed: name should be '"
                        + referenceDevice.getDeviceInfo().getName()
                        + "' but is '"
                        + resultDevice.getDeviceInfo().getName() + "'!\n");
                allOk = false;
            }
        }
        if (result instanceof Receiver) {
            ((Receiver)result).close();
        } else if (result instanceof Transmitter) {
            ((Transmitter)result).close();
        } else if (result instanceof Synthesizer) {
            ((Synthesizer)result).close();
        } else if (result instanceof Sequencer) {
            ((Sequencer)result).close();
        }
    } catch (Exception e) {
        out("Exception thrown; Test NOT failed.");
        e.printStackTrace(System.out);
        out("");
    }
    return allOk;
}