/* * Copyright (c) 1999, 2007, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.sun.media.sound; import java.util.ArrayList;import java.util.List; import javax.sound.midi.*;   /** * MidiInDevice class representing functionality of MidiIn devices. * * @author David Rivas * @author Kara Kytle * @author Florian Bomers */class MidiInDevice extends AbstractMidiDevice implements Runnable {     private Thread midiInThread = null;     // CONSTRUCTOR     MidiInDevice(AbstractMidiDeviceProvider.Info info) {        super(info);        if(Printer.trace) Printer.trace("MidiInDevice CONSTRUCTOR");    }      // IMPLEMENTATION OF ABSTRACT MIDI DEVICE METHODS     // $$kk: 06.24.99: i have this both opening and starting the midi in device.    // may want to separate these??    protected synchronized void implOpen() throws MidiUnavailableException {        if (Printer.trace) Printer.trace("> MidiInDevice: implOpen()");         int index = ((MidiInDeviceProvider.MidiInDeviceInfo)getDeviceInfo()).getIndex();        id = nOpen(index); // can throw MidiUnavailableException         if (id == 0) {            throw new MidiUnavailableException("Unable to open native device");        }         // create / start a thread to get messages        if (midiInThread == null) {            midiInThread = JSSecurityManager.createThread(this,                                                    "Java Sound MidiInDevice Thread",   // name                                                    false,  // daemon                                                    -1,    // priority                                                    true); // doStart        }         nStart(id); // can throw MidiUnavailableException        if (Printer.trace) Printer.trace("< MidiInDevice: implOpen() completed");    }      // $$kk: 06.24.99: i have this both stopping and closing the midi in device.    // may want to separate these??    protected synchronized void implClose() {        if (Printer.trace) Printer.trace("> MidiInDevice: implClose()");        long oldId = id;        id = 0;         super.implClose();         // close the device        nStop(oldId);        if (midiInThread != null) {            try {                midiInThread.join(1000);            } catch (InterruptedException e) {                // IGNORE EXCEPTION            }        }        nClose(oldId);        if (Printer.trace) Printer.trace("< MidiInDevice: implClose() completed");    }      public long getMicrosecondPosition() {        long timestamp = -1;        if (isOpen()) {            timestamp = nGetTimeStamp(id);        }        return timestamp;    }      // OVERRIDES OF ABSTRACT MIDI DEVICE METHODS      protected boolean hasTransmitters() {        return true;    }      protected Transmitter createTransmitter() {        return new MidiInTransmitter();    }     /**      * An own class to distinguish the class name from      * the transmitter of other devices      */    private class MidiInTransmitter extends BasicTransmitter {        private MidiInTransmitter() {            super();        }    }     // RUNNABLE METHOD     public void run() {        // while the device is started, keep trying to get messages.        // this thread returns from native code whenever stop() or close() is called        while (id!=0) {            // go into native code and retrieve messages            nGetMessages(id);            if (id!=0) {                try {                    Thread.sleep(1);                } catch (InterruptedException e) {}            }        }        if(Printer.verbose) Printer.verbose("MidiInDevice Thread exit");        // let the thread exit        midiInThread = null;    }      // CALLBACKS FROM NATIVE     /**     * Callback from native code when a short MIDI event is received from hardware.     * @param packedMsg: status | data1 << 8 | data2 << 8     * @param timeStamp time-stamp in microseconds     */    void callbackShortMessage(int packedMsg, long timeStamp) {        if (packedMsg == 0 || id == 0) {            return;        }         /*if(Printer.verbose) {          int status = packedMsg & 0xFF;          int data1 = (packedMsg & 0xFF00)>>8;          int data2 = (packedMsg & 0xFF0000)>>16;          Printer.verbose(">> MidiInDevice callbackShortMessage: status: " + status + " data1: " + data1 + " data2: " + data2 + " timeStamp: " + timeStamp);          }*/         getTransmitterList().sendMessage(packedMsg, timeStamp);    }     void callbackLongMessage(byte[] data, long timeStamp) {        if (id == 0 || data == null) {            return;        }        getTransmitterList().sendMessage(data, timeStamp);    }     // NATIVE METHODS     private native long nOpen(int index) throws MidiUnavailableException;    private native void nClose(long id);     private native void nStart(long id) throws MidiUnavailableException;    private native void nStop(long id);    private native long nGetTimeStamp(long id);     // go into native code and get messages. May be blocking    private native void nGetMessages(long id);  }