/*********************************************

	Copyright © 2001 Jason Lamport.
	All rights reserved.

----------------------

J_OMS was originally a wrapper for all the JDirect calls to the 
native OMS routines, and for many other MIDI-related utility functions.

Not used in current implementation (but we're keeping it for now, it may
be useful later).

Notes on MIDI packets:

byte 1, low-order nybble:	MIDI channel

byte 1, high-order nybble:	0x9 = note event
							0xB = controller event
							0xE = pitch bend
							0xC = patch change

byte 2:	note/controller/patch number
		(for notes: C1 == 0x24)
		
byte 3:	note-velocity or controller-value

------------
		typedef struct OMSMIDIPacket {		// offsets:
			long 			beatTimeStamp;	// 0
			long 			smpteTimeStamp;	// 4
			unsigned char	flags;			// 8
			unsigned char 	len; 			// 9
			unsigned short 	srcIORefNum;	// 10
			unsigned short 	appConnRefCon;	// 12
			unsigned char 	data[4];		// 14
		} OMSMIDIPacket;

long:4 short:2 


*******************************************/

package com.strangelight.v4control;

import com.apple.jdirect.*;
import java.util.*;

public class J_OMS implements V4ControlLib_interface {

/*
	public static MIDIPacket[] get_MIDI() {
		
	}
*/

	public static final int MAX_CONTROLLER_NUM = 255;
	public static final int MIN_CONTROLLER_NUM = 0;
	public static final int MAX_CONTROLLER_VALUE = 127;
	public static final int MIN_CONTROLLER_VALUE = 0;
	
/*

	private Vector packet_buffer = new Vector();
	private Vector message_buffer = new Vector();

	private Vector inputs = new Vector();
	private Vector outputs = new Vector();

	private J_OMS() {}	//	prevent instantiation

	public static class MIDIPacket extends J_NativeMessage {

		public static final byte NOTE  			= (byte) 0x90;
		public static final byte CONTROLLER 	= (byte) 0xB0;
		public static final byte PITCHBEND 		= (byte) 0xE0;
		public static final byte PATCH_CHANGE 	= (byte) 0xC0;
		
		public static final int  SIZEOF = 18;
		
		protected static final int	beatTimeStamp_index		= 0;
		protected static final int	smpteTimeStamp_index	= 4;
		protected static final int	flags_index				= 8;
		protected static final int	len_index				= 9;
		protected static final int	srcIORefNum_index		= 10;
		protected static final int	appConnRefCon_index		= 12;
		protected static final int	data_index				= 14;
		protected static final int	controller_index		= 15;
		protected static final int	value_index				= 16;

		protected static final byte	event_type_mask		= (byte) 0xF0;
		protected static final byte	channel_mask		= (byte) 0x0F;
		
		public static int object_type() { return OMSMIDI_PACKET; }

		public MIDIPacket() {
			super( SIZEOF );
		}
		public MIDIPacket( byte[] b ) {
			super( SIZEOF );
			for( int i = 0; i < SIZEOF; ++i ) {
				bytes[i] = b[i];
			}
		}
		
		public byte get_event_type() {
			return (byte) ( bytes[data_index] & event_type_mask );
		}
		
		public byte get_channel() {
			return (byte) ( bytes[data_index] & channel_mask );
		}
		
		public byte get_controller() {
			return bytes[controller_index];
		}
		
		public byte get_value() {
			return bytes[value_index];
		}
		
		public int beatTimeStamp() {
			return getIntAt( beatTimeStamp_index );
		}
		
		public int smpteTimeStamp() {
			return getIntAt( smpteTimeStamp_index );
		}
		
		public byte flags() {
			return getByteAt( flags_index );
		}
		
		public byte len() {
			return getByteAt( len_index );
		}
		
		public short srcIORefNum() {
			return getShortAt( srcIORefNum_index );
		}
		
		public short appConnRefCon() {
			return getShortAt( appConnRefCon_index );
		}
		
		public byte[] data() {
			return getBytesAt( data_index, 4 );
		}
	}
*/

}

/*
		typedef struct OMSMIDIPacket {
			long 			beatTimeStamp;
			long 			smpteTimeStamp;
			unsigned char	flags;
			unsigned char 	len; 
			unsigned short 	srcIORefNum;
			unsigned short 	appConnRefCon;
			unsigned char 	data[4];
		} OMSMIDIPacket;

long:4 short:2 

beatTimeStamp
smpteTimeStamp
flags
len 
srcIORefNum
appConnRefCon
data[4]

 */