| /* MidiMessage.java -- base class for MIDI messages. |
| Copyright (C) 2005 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package javax.sound.midi; |
| |
| /** |
| * The base class for all MIDI messages. |
| * |
| * @author Anthony Green (green@redhat.com) |
| * @since 1.3 |
| * |
| */ |
| public abstract class MidiMessage implements Cloneable |
| { |
| /** |
| * MIDI message data. |
| */ |
| protected byte data[]; |
| |
| /** |
| * The total length of the MIDI message. |
| */ |
| protected int length; |
| |
| /** |
| * MidiMessage contructor. |
| * |
| * @param data a valid MIDI message |
| */ |
| protected MidiMessage(byte[] data) |
| { |
| this.data = data; |
| this.length = data.length; |
| } |
| |
| /** |
| * Set the complete MIDI message. |
| * |
| * @param data The complete MIDI message. |
| * @param length The length of the MIDI message. |
| * @throws InvalidMidiDataException Thrown when the MIDI message is invalid. |
| */ |
| protected void setMessage(byte[] data, int length) |
| throws InvalidMidiDataException |
| { |
| this.data = new byte[length]; |
| System.arraycopy(data, 0, this.data, 0, length); |
| this.length = length; |
| } |
| |
| /** |
| * Get the MIDI message data. |
| * |
| * @return an array containing the MIDI message data |
| */ |
| public byte[] getMessage() |
| { |
| byte copy[] = new byte[length]; |
| System.arraycopy(data, 0, copy, 0, length); |
| return copy; |
| } |
| |
| /** |
| * Get the status byte of the MIDI message (as an int) |
| * |
| * @return the status byte of the MIDI message (as an int), or zero if the message length is zero. |
| */ |
| public int getStatus() |
| { |
| if (length > 0) |
| return (data[0] & 0xff); |
| else |
| return 0; |
| } |
| |
| /** |
| * Get the length of the MIDI message. |
| * |
| * @return the length of the MIDI messsage |
| */ |
| public int getLength() |
| { |
| return length; |
| } |
| |
| /* Create a clone of this object. |
| * |
| * @see java.lang.Object#clone() |
| */ |
| public abstract Object clone(); |
| } |