/*
 * Created on Dec 14, 2004
 *
 * Copyright (c) 2005 Peter Johan Salomonsen (http://www.petersalomonsen.com)
 * 
 * http://www.frinika.com
 * 
 * This file is part of Frinika.
 * 
 * Frinika is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Frinika is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Frinika; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
package com.frinika.benchmark.audio;

import javax.sound.sampled.TargetDataLine;

import com.frinika.benchmark.SyncVoice;
import com.frinika.global.FrinikaConfig;
import com.frinika.sequencer.FrinikaSequencer;
import com.frinika.sequencer.gui.AudioDeviceHandle;

/**
 * Use for capturing inputs and for direct monitoring. Based on Peters Sampler
 * code.
 * 
 * @author pjl
 * @author Peter Johan Salomonsen
 * 
 */
public class ClickListener extends SyncVoice {

	TargetDataLine lineIn = null;

	byte[] inBuffer;

	FrinikaSequencer sequencer;

	static int OFF = 0;

	static int ARMED = 1;

	static int RECORDING = 2;

	AudioDeviceHandle audioDeviceHandle;

	int state = OFF;

	int nChannel = 0;

	long framePtrLast=0; // remember the last sample so we can correct if there is a glitch OR song postion change
	
	float thresh;
	boolean monit;

	private ClickOscillator out;


	public ClickListener(FrinikaSequencer seq, boolean monit,
			ClickOscillator out,float thresh) {
		super(seq);
		this.monit = monit;
		this.out = out;
		this.thresh=thresh;
	}


	public void setAudioDeviceHandle(AudioDeviceHandle audio) {
		audioDeviceHandle = audio;
		nChannel = audioDeviceHandle.getChannels();
		System.out.println(audioDeviceHandle.toString() + "   " + nChannel);
	}

	public void fillBuffer(int startBufferPos, int endBufferPos, float[] buffer) {

		try {

			if (lineIn == null) {
				lineIn = audioDeviceHandle.getOpenLine();
				lineIn.start();
			}

			if (inBuffer == null || inBuffer.length != buffer.length * nChannel)
				inBuffer = new byte[buffer.length * nChannel];

			if (glitched)
				doSync(0);

			// 2 channels out but 2 byte per in sample

			int nByte = nChannel * (endBufferPos - startBufferPos);

			if (lineIn.available() >= nByte) {

				int nread;
				int cnt = 0;

				do {
					nread = lineIn.read(inBuffer, 0, nByte);
					cnt++;
				} while (lineIn.available() > 2 * nByte);

				if (cnt != 1) {
					System.err.println(" LineIn OVER RUN ");
					glitched = true;
				}

				for (int n = 0; n < nByte / 2; n++) {
					short sample = (short) ((0xff & inBuffer[2 * n + 1]) + ((0xff & inBuffer[2 * n]) * 256));
					float val = sample / 32768f;
					if (n % nChannel == 0)
						framePtr++;
					if (val > thresh) {
						
						long nF=(framePtr - out.clickFrame);
						double t= nF/FrinikaConfig.sampleRate;
						System.out.println(" latency in frames "
								+ nF +  " [ " +t + " secs]");
					}
					if (monit) {
						if (nChannel == 1) {
							buffer[startBufferPos + 2 * n] += val;
							buffer[startBufferPos + 2 * n + 1] += val;
						} else {
							buffer[startBufferPos + n] += val;
						}
					}

				}
			} else {
				System.err.println(" LineIn UNDER RUN ");
				glitched = true;
			}

		} catch (Exception e) {
			e.printStackTrace();
		}
		framePtrLast=framePtr;
	}


	@Override
	protected void correctGlitch() {
		// TODO Auto-generated method stub
		
	}

}