ToneVoice.java

/*
  ToneVoice.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.settings.ISettingSection;
import ejs.base.utils.ListenerList;

/**
 * This is a normal square-wave "music" voice.
 * @author ejs
 *
 */
public class ToneVoice extends BaseClockedVoice {
	public ToneVoice(String id, String name, ListenerList<IRegisterWriteListener> listeners) {
		super(id, name, listeners);
	}

	/* (non-Javadoc)
	 * @see v9t9.engine.sound.BaseVoice#initRegisters(java.util.Map, java.util.Map, java.util.Map, ejs.base.utils.ListenerList, int)
	 */
	@Override
	public int doInitRegisters() {
		register(baseReg + TMS9919Consts.REG_OFFS_FREQUENCY_PERIOD,
				getId() + ":Per",
				getName());
		register(baseReg + TMS9919Consts.REG_OFFS_ATTENUATION,
				getId() + ":Att",
				getName());
		
		return TMS9919Consts.REG_COUNT_TONE;
	}
	
	/* (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();
		}
		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 {
			System.err.println("unknown sound register " + reg);
		}
	}


	/* (non-Javadoc)
	 * @see v9t9.engine.sound.BaseVoice#loadState(ejs.base.settings.ISettingSection)
	 */
	public void loadState(ISettingSection settings) {
		super.loadState(settings);
	}

	/* (non-Javadoc)
	 * @see v9t9.engine.sound.BaseVoice#saveState(ejs.base.settings.ISettingSection)
	 */
	public void saveState(ISettingSection settings) {
		super.saveState(settings);
	}
}