| /* |
| * Copyright (c) 1999, 2013, 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 |
| */ |
| final 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 |
| |
| final class MidiOutReceiver extends AbstractReceiver { |
| |
| void implSend(final MidiMessage message, final long timeStamp) { |
| final int length = message.getLength(); |
| final 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 { |
| final byte[] data; |
| if (message instanceof FastSysexMessage) { |
| data = ((FastSysexMessage) message).getReadOnlyMessage(); |
| } else { |
| data = message.getMessage(); |
| } |
| final int dataLength = Math.min(length, data.length); |
| if (dataLength > 0) { |
| nSendLongMessage(id, data, dataLength, 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 |