SoundTMS9919BGenerator.java

/*
  SoundTMS9919BGenerator.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.audio.sound;

import static v9t9.common.sound.TMS9919BConsts.*;

import java.util.HashMap;
import java.util.Map;

import v9t9.common.machine.IMachine;
import v9t9.common.machine.IRegisterAccess;
import v9t9.common.sound.TMS9919BConsts;

/**
 * Controller for the TMS9919(B) sound chip.
 * </pre>
 * @author ejs
 *
 */
public class SoundTMS9919BGenerator extends SoundTMS9919Generator {

	protected Map<Integer, Integer> regIdEffectId; 
	
	public SoundTMS9919BGenerator(IMachine machine, String name, int regBase) {
		super(machine, name, regBase);
	}
	
	/* (non-Javadoc)
	 * @see v9t9.audio.sound.SoundTMS9919Generator#doInitVoices(java.lang.String, int)
	 */
	@Override
	protected int doInitVoices(String name, int regBase) {

		regIdEffectId = new HashMap<Integer, Integer>();
		
		for (int i = VOICE_TONE_0; i <= VOICE_TONE_2; i++) {
			EnhancedToneGeneratorVoice ev = new EnhancedToneGeneratorVoice(
					name, i);
			soundVoicesList.add(ev);
			regBase += setupEnhancedToneVoice(regBase, i, ev);
		}
		
		EnhancedNoiseGeneratorVoice nv = new EnhancedNoiseGeneratorVoice(
				name);
		soundVoicesList.add(nv);
		regBase += setupEnhancedNoiseVoice(regBase, nv);
		
		AudioGateSoundVoice av = new AudioGateSoundVoice(name);
		soundVoicesList.add(av);
		regBase += setupAudioGateVoice(regBase, av);
		
		return regBase;
	}
	

	protected int setupEnhancedToneVoice(int regBase, int num, final EnhancedToneGeneratorVoice voice) {
		int cnt = super.setupToneVoice(regBase, num, voice);

		for (int e = 0; e < TMS9919BConsts.CMD_NUM_EFFECTS; e++) {
			int rnum = regBase + TMS9919BConsts.REG_COUNT_TONE + e;

			regIdToVoices.put(rnum, voice);
			
			regIdToListener.put(rnum,
				new IRegisterAccess.IRegisterWriteListener() {
					
					@Override
					public void registerChanged(int reg, int value) {
						setEffect(voice, reg, value);
					}
				}
			);
			regIdEffectId.put(rnum, e);
		}

		return cnt + TMS9919BConsts.CMD_NUM_EFFECTS;
	}


	protected int setupEnhancedNoiseVoice(int regBase, final EnhancedNoiseGeneratorVoice voice) {
		int cnt = super.setupNoiseVoice(regBase, voice);

		for (int e = 0; e < TMS9919BConsts.CMD_NUM_EFFECTS; e++) {
			int rnum = regBase + TMS9919BConsts.REG_COUNT_NOISE + e;

			regIdToVoices.put(rnum, voice);
			regIdToListener.put(rnum,
				new IRegisterAccess.IRegisterWriteListener() {
					
					@Override
					public void registerChanged(int reg, int value) {
						setEffect(voice, reg, value);
					}
				}
			);
			regIdEffectId.put(rnum, e);
		}

		return cnt + TMS9919BConsts.CMD_NUM_EFFECTS;
	}
	
	protected void setEffect(EnhancedVoice ev, int reg, int val) {
		int eff = regIdEffectId.get(reg);
		switch (eff) {
		case CMD_RESET:
			ev.getEffectsController().reset();
			break;
		case CMD_RELEASE:
			ev.getEffectsController().startRelease();
			break;
		case CMD_ENVELOPE:
			ev.getEffectsController().setSustain(val & 0xf);
			break;
		case CMD_ENV_ATTACK_DECAY:
			ev.getEffectsController().setADSR(
					OP_ATTACK, (val >> 4) & 0xf);
			ev.getEffectsController().setADSR(
					OP_DECAY, val & 0xf);
			break;
		case CMD_ENV_HOLD_RELEASE:
			ev.getEffectsController().setADSR(
					OP_HOLD, (val >> 4) & 0xf);
			ev.getEffectsController().setADSR(
					OP_RELEASE, val & 0xf);
			break;
		case CMD_VIBRATO:
			ev.getEffectsController().setVibrato(
					(val >> 4) & 0xf, val & 0xf);
			break;
		case CMD_TREMOLO:
			ev.getEffectsController().setTremolo(
					(val >> 4) & 0xf, val & 0xf);
			break;
		case CMD_WAVEFORM:
			ev.getEffectsController().setWaveform(val & 0xf);
			break;
		case CMD_SWEEP_PROPORTION: {
			int target = ((ClockedSoundVoice) ev).getPeriod();
			if (val > 0)
				target += (target * val / 127);
			else
				target -= (target * -val / 128);
			ev.getEffectsController().setSweepTarget(target);
			break;
		}
		case CMD_SWEEP_TIME: {
			int clocks = (val & 0xff) * ((ClockedSoundVoice)ev).getSoundClock() / 64;
			ev.getEffectsController().setSweepTime(clocks);
			break;
		}
		case CMD_BALANCE:
			((SoundVoice)ev).setBalance((byte) val);
			break;
		}
	}

}