/* * 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 javax.sound.midi.*;   /** * MidiOutDevice class representing functionality of MidiOut devices. * * @author David Rivas * @author Kara Kytle * @author Florian Bomers */class MidiOutDevice extends AbstractMidiDevice {     // CONSTRUCTOR     MidiOutDevice(AbstractMidiDeviceProvider.Info info) {                super(info);                if(Printer.trace) Printer.trace("MidiOutDevice CONSTRUCTOR");    }      // IMPLEMENTATION OF ABSTRACT MIDI DEVICE METHODS     protected synchronized void implOpen() throws MidiUnavailableException {        if (Printer.trace) Printer.trace("> MidiOutDevice: implOpen()");        int index = ((AbstractMidiDeviceProvider.Info)getDeviceInfo()).getIndex();        id = nOpen(index); // can throw MidiUnavailableException        if (id == 0) {            throw new MidiUnavailableException("Unable to open native device");        }        if (Printer.trace) Printer.trace("< MidiOutDevice: implOpen(): completed.");    }      protected synchronized void implClose() {        if (Printer.trace) Printer.trace("> MidiOutDevice: implClose()");        // prevent further action        long oldId = id;        id = 0;         super.implClose();         // close the device        nClose(oldId);        if (Printer.trace) Printer.trace("< MidiOutDevice: implClose(): completed");    }      public long getMicrosecondPosition() {        long timestamp = -1;        if (isOpen()) {            timestamp = nGetTimeStamp(id);        }        return timestamp;    }       // OVERRIDES OF ABSTRACT MIDI DEVICE METHODS     /** Returns if this device supports Receivers.        This implementation always returns true.        @return true, if the device supports Receivers, false otherwise.    */    protected boolean hasReceivers() {        return true;    }      protected Receiver createReceiver() {        return new MidiOutReceiver();    }      // INNER CLASSES     class MidiOutReceiver extends AbstractReceiver {         protected void implSend(MidiMessage message, long timeStamp) {            int length = message.getLength();            int status = message.getStatus();            if (length <= 3 && status != 0xF0 && status != 0xF7) {                int packedMsg;                if (message instanceof ShortMessage) {                    if (message instanceof FastShortMessage) {                        packedMsg = ((FastShortMessage) message).getPackedMsg();                    } else {                        ShortMessage msg = (ShortMessage) message;                        packedMsg = (status & 0xFF)                            | ((msg.getData1() & 0xFF) << 8)                            | ((msg.getData2() & 0xFF) << 16);                    }                } else {                    packedMsg = 0;                    byte[] data = message.getMessage();                    if (length>0) {                        packedMsg = data[0] & 0xFF;                        if (length>1) {                            /* We handle meta messages here. The message                               system reset (FF) doesn't get until here,                               because it's length is only 1. So if we see                               a status byte of FF, it's sure that we                               have a Meta message. */                            if (status == 0xFF) {                                return;                            }                            packedMsg |= (data[1] & 0xFF) << 8;                            if (length>2) {                                packedMsg |= (data[2] & 0xFF) << 16;                            }                        }                    }                }                nSendShortMessage(id, packedMsg, timeStamp);            } else {                if (message instanceof FastSysexMessage) {                    nSendLongMessage(id, ((FastSysexMessage) message).getReadOnlyMessage(),                                     length, timeStamp);                } else {                    nSendLongMessage(id, message.getMessage(), length, timeStamp);                }            }        }         /** shortcut for the Sun implementation */        synchronized void sendPackedMidiMessage(int packedMsg, long timeStamp) {            if (isOpen() && id != 0) {                nSendShortMessage(id, packedMsg, timeStamp);            }        }      } // class MidiOutReceiver      // NATIVE METHODS     private native long nOpen(int index) throws MidiUnavailableException;    private native void nClose(long id);     private native void nSendShortMessage(long id, int packedMsg, long timeStamp);    private native void nSendLongMessage(long id, byte[] data, int size, long timeStamp);    private native long nGetTimeStamp(long id); } // class MidiOutDevice