RoutingConfig.java

/*
 *  RoutineConfig.java
 *  Eisenkraut
 *
 *  Copyright (c) 2004-2016 Hanns Holger Rutz. All rights reserved.
 *
 *  This software is published under the GNU General Public License v3+
 *
 *
 *	For further information, please contact Hanns Holger Rutz at
 *	contact@sciss.de
 */

package de.sciss.eisenkraut.io;

import java.util.StringTokenizer;
import java.util.prefs.Preferences;

public class RoutingConfig {
	/*
	 *  Preferences key. Value: Integer representing the number
	 *  of channels for this configuration
	 */
	public static final String KEY_RC_NUMCHANNELS	= "numchannels";
	/*
	 *  Preferences key. Value: Float representing the start angle (in degrees)
	 *  for the first mapped channel fo this configuration
	 */
	private static final String KEY_RC_STARTANGLE	= "startangle";
	/*
	 *  Preferences key. Value: String which is space separated list of
	 *  integers representing the audio interface channels (first channel = 0)
	 *	for this configuration
	 */
	private static final String KEY_RC_MAPPING		= "mapping";
	/**
	 *  Preferences key. Value: String representing the driver
	 *  name for this configuration
	 */
	public static final String KEY_NAME			= "name";

	public final String		id;
	public final String		name;
	public final int		numChannels;
	public final int[]		mapping;
	public final float		startAngle;
	
	public static final String[] KEYS = { KEY_NAME, KEY_RC_NUMCHANNELS, KEY_RC_MAPPING, KEY_RC_STARTANGLE };
	
	public RoutingConfig( String id, String name )
	{
		this.id				= id;
		this.name			= name;
		this.numChannels	= 0;
		this.mapping		= new int[ 0 ];
		this.startAngle		= 0f;
	}

	public RoutingConfig( String id, String name, int[] mapping, float startAngle )
	{
		this.id				= id;
		this.name			= name;
		this.numChannels	= mapping.length;
		this.mapping		= mapping;
		this.startAngle		= startAngle;
	}

	public RoutingConfig( Preferences cfgPrefs )
	throws NumberFormatException
	{
		final StringTokenizer tok = new StringTokenizer( cfgPrefs.get( KEY_RC_MAPPING, "" ));

		id			= cfgPrefs.name();
		name		= cfgPrefs.get( KEY_NAME, id );
		numChannels	= cfgPrefs.getInt( KEY_RC_NUMCHANNELS, 0 );
		startAngle	= cfgPrefs.getFloat( KEY_RC_STARTANGLE, 0.0f );
		mapping		= new int[ numChannels ];

		for( int j = 0; (j < numChannels) && tok.hasMoreTokens(); j++ ) {
			mapping[ j ] = Integer.parseInt( tok.nextToken() );
		}
	}
	
	public boolean equals( Object o )
	{
		if( (o == null) || !o.getClass().equals( getClass() )) return false;
		
		final RoutingConfig cfg2 = (RoutingConfig) o;
		if( id.equals( cfg2.id ) &&
			name.equals( cfg2.name ) &&
			(numChannels == cfg2.numChannels) &&
			(mapping.length == cfg2.mapping.length) &&
			(startAngle == cfg2.startAngle )) {
			
			for( int i = 0; i < mapping.length; i++ ) {
				if( mapping[ i ] != cfg2.mapping[ i ]) return false;
			}
			return true;
		}
		return false;
	}

	public int hashCode() {
		int hash = id.hashCode() ^ name.hashCode() ^ numChannels ^ Float.floatToRawIntBits(startAngle);
		for (int i = 0; i < mapping.length; i++) {
			hash ^= mapping[i] << i;
		}
		return hash;
	}

	public void toPrefs(Preferences cfgPrefs) {
		final StringBuilder sb = new StringBuilder();

		cfgPrefs.put(KEY_NAME, name);
		cfgPrefs.putInt(KEY_RC_NUMCHANNELS, numChannels);
		cfgPrefs.putFloat(KEY_RC_STARTANGLE, startAngle);
		if (numChannels > 0) {
			sb.append(mapping[0]);
		}
		for (int j = 1; j < numChannels; j++) {
			sb.append(' ');
			sb.append(mapping[j]);
		}
		cfgPrefs.put(KEY_RC_MAPPING, sb.toString());
	}

	public String toString() {
		final StringBuilder bMap = new StringBuilder("[ ");
		for (int i = 0; i < mapping.length; i++) {
			if (i > 0) bMap.append(", ");
			bMap.append(String.valueOf(mapping[i]));
		}
		bMap.append(" ]");
		return "RoutingConfig( \"" + id + "\", \"" + name + "\", " + bMap.toString() + ", " + startAngle + " )";
	}
}