| /* |
| * Copyright (c) 1999, 2016, 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.MidiUnavailableException; |
| import javax.sound.midi.Transmitter; |
| |
| /** |
| * MidiInDevice class representing functionality of MidiIn devices. |
| * |
| * @author David Rivas |
| * @author Kara Kytle |
| * @author Florian Bomers |
| */ |
| final class MidiInDevice extends AbstractMidiDevice implements Runnable { |
| |
| private volatile Thread midiInThread; |
| |
| MidiInDevice(AbstractMidiDeviceProvider.Info info) { |
| super(info); |
| if(Printer.trace) Printer.trace("MidiInDevice CONSTRUCTOR"); |
| } |
| |
| // $$kk: 06.24.99: i have this both opening and starting the midi in device. |
| // may want to separate these?? |
| @Override |
| protected synchronized void implOpen() throws MidiUnavailableException { |
| if (Printer.trace) Printer.trace("> MidiInDevice: implOpen()"); |
| |
| int index = ((MidiInDeviceProvider.MidiInDeviceInfo)getDeviceInfo()).getIndex(); |
| id = nOpen(index); // can throw MidiUnavailableException |
| |
| if (id == 0) { |
| throw new MidiUnavailableException("Unable to open native device"); |
| } |
| |
| // create / start a thread to get messages |
| if (midiInThread == null) { |
| midiInThread = JSSecurityManager.createThread(this, |
| "Java Sound MidiInDevice Thread", // name |
| false, // daemon |
| -1, // priority |
| true); // doStart |
| } |
| |
| nStart(id); // can throw MidiUnavailableException |
| if (Printer.trace) Printer.trace("< MidiInDevice: implOpen() completed"); |
| } |
| |
| // $$kk: 06.24.99: i have this both stopping and closing the midi in device. |
| // may want to separate these?? |
| @Override |
| 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"); |
| } |
| |
| @Override |
| public long getMicrosecondPosition() { |
| long timestamp = -1; |
| if (isOpen()) { |
| timestamp = nGetTimeStamp(id); |
| } |
| return timestamp; |
| } |
| |
| // OVERRIDES OF ABSTRACT MIDI DEVICE METHODS |
| |
| @Override |
| protected boolean hasTransmitters() { |
| return true; |
| } |
| |
| @Override |
| protected Transmitter createTransmitter() { |
| return new MidiInTransmitter(); |
| } |
| |
| /** |
| * An own class to distinguish the class name from |
| * the transmitter of other devices. |
| */ |
| private final class MidiInTransmitter extends BasicTransmitter { |
| private MidiInTransmitter() { |
| super(); |
| } |
| } |
| |
| @Override |
| 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; |
| } |
| |
| /** |
| * 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); |
| } |
| |
| 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); |
| } |