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/*

:51  2001

Copyright (C) 2000 Andrew Sorensen & Andrew Brown

This program 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 of the License, or any
later version.

This program 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 this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/
package jm.midi.event;

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;

/**
 * Description:
 * The NoteOn event is one of a set of events whose parent
 * class is VoiceEvt.  In total these classes cover all voice
 * event types found in most MIDI file formats.
 * These classes will usually be added to a linked list as type
 * VoiceEvt.
 * (see class VoiceEvt for more information)
 *
 * @author Andrew Sorensen
 */

public final class NoteOn implements VoiceEvt, Cloneable {
    private final short id = 005;
    private short pitch;
    private short velocity;
    private short midiChannel;
    private int time;

    /**
     * Public constructor for creating a default (Empty) note on event
     */
    public NoteOn() {
        this.pitch = 0;
        this.velocity = 0;
        this.midiChannel = 0;
        this.time = 0;
    }

    /**
     * Public constructor for creating a note on event containing
     * pitch, velocity, midi channel and time
     */
    public NoteOn(short pitch, short velocity, short midiChannel, int time) {
        this.pitch = pitch;
        this.velocity = velocity;
        this.midiChannel = midiChannel;
        this.time = time;
    }
    //------------------------------------------
    //Pitch
    //-------------------------------------------

    /**
     * Returns a note on events pitch value
     */
    public short getPitch() {
        return pitch;
    }

    /**
     * Sets a note on events pitch value
     */
    public void setPitch(short pitch) {
        this.pitch = pitch;
    }
    //--------------------------------------------
    //Velocity
    //---------------------------------------------

    /**
     * Returns a note on events velocity value
     */
    public short getVelocity() {
        return velocity;
    }

    /**
     * Sets a note on events velocity value
     */
    public void setVelocity(short velocity) {
        this.velocity = velocity;
    }

    //---------------------------------------------
    //MIDI Channel
    //--------------------------------------------
    public short getMidiChannel() {
        return midiChannel;
    }

    public void setMidiChannel(short midiChannel) {
        this.midiChannel = midiChannel;
    }

    //----------------------------------------------
    //Time
    //-----------------------------------------------
    public int getTime() {
        return time;
    }

    public void setTime(int time) {
        this.time = time;
    }

    //----------------------------------------------
    //Return ID
    //----------------------------------------------
    public short getID() {
        return id;
    }

    //-------------------------------------------------
    //Copy Object
    //------------------------------------------------
    public Event copy() throws CloneNotSupportedException {
        NoteOn event;
        try {
            event = (NoteOn) this.clone();
        } catch (CloneNotSupportedException e) {
            System.out.println(e);
            event = new NoteOn();
        }
        return event;
    }

    //----------------------------------------------
    // Write the contents of this object out to disk
    //----------------------------------------------
    public int write(DataOutputStream dos) throws IOException {
        int bytes_out = jm.midi.MidiUtil.writeVarLength(this.time, dos);
        dos.writeByte((byte) (0x90 + midiChannel));
        dos.writeByte((byte) pitch);
        dos.writeByte((byte) velocity);
        return bytes_out + 3;
    }

    //----------------------------------------------
    //  Read the contects of this object in from disk
    public int read(DataInputStream dis) throws IOException {
        this.pitch = (short) dis.readUnsignedByte();
        this.velocity = (short) dis.readUnsignedByte();
        return 2;
    }

    //-----------------------------------------------
    //Print
    //----------------------------------------------
    public void print() {
        System.out.println("Note On(005): [time = " + time + "][midiChannel = " + midiChannel + "][pitch = " + pitch + "][velocity = " + velocity + "]");
    }
}