EnhancedToneVoice.java

/*
  EnhancedToneVoice.java

  (c) 2011-2013 Edward Swartz

  All rights reserved. This program and the accompanying materials
  are made available under the terms of the Eclipse Public License v1.0
  which accompanies this distribution, and is available at
  http://www.eclipse.org/legal/epl-v10.html
 */
package v9t9.engine.sound;

import v9t9.common.machine.IRegisterAccess.IRegisterWriteListener;
import v9t9.common.sound.TMS9919Consts;
import ejs.base.utils.ListenerList;

/**
 * @author ejs
 *
 */
public class EnhancedToneVoice extends BaseEnhancedClockedVoice {

	/**
	 * @param id
	 * @param name
	 * @param listeners
	 * @param numEffects
	 */
	public EnhancedToneVoice(String id, String name,
			ListenerList<IRegisterWriteListener> listeners, int numEffects) {
		super(id, name, listeners, numEffects);
	}

	/* (non-Javadoc)
	 * @see v9t9.engine.sound.ToneVoice#doInitRegisters()
	 */
	@Override
	public int doInitRegisters() {
		register(baseReg + TMS9919Consts.REG_OFFS_FREQUENCY_PERIOD,
				getId() + ":Per",
				getName());
		register(baseReg + TMS9919Consts.REG_OFFS_ATTENUATION,
				getId() + ":Att",
				getName());

		int effectRegCount = doInitEffectRegisters(baseReg + TMS9919Consts.REG_COUNT_TONE);
		
		return TMS9919Consts.REG_COUNT_TONE + effectRegCount;
	}


	/* (non-Javadoc)
	 * @see v9t9.engine.sound.IVoice#getRegister(int)
	 */
	@Override
	public int getRegister(int reg) {
		if (reg == baseReg + TMS9919Consts.REG_OFFS_FREQUENCY_PERIOD) {
			return getPeriod();
		}
		if (reg == baseReg + TMS9919Consts.REG_OFFS_ATTENUATION) {
			return getAttenuation();
		}

		if (reg >= baseEffectReg && reg < baseEffectReg + numEffects) {
			return getEffectValue(reg - baseEffectReg);
		}

		return 0;
	}


	/* (non-Javadoc)
	 * @see v9t9.engine.sound.IVoice#setRegister(int, int)
	 */
	@Override
	public void setRegister(int reg, int newValue) {
		if (reg == baseReg + TMS9919Consts.REG_OFFS_FREQUENCY_PERIOD) {
			setPeriod(newValue);
		}
		else if (reg == baseReg + TMS9919Consts.REG_OFFS_ATTENUATION) {
			setAttenuation(newValue);
		}
		else if (reg >= baseEffectReg && reg < baseEffectReg + numEffects) {
			setEffect(reg - baseEffectReg, (byte) newValue);
		}

	}
}