view src/samer/units/LineOut.java @ 8:5e3cbbf173aa tip

Reorganise some more

/*
 *	Copyright (c) 2000, Samer Abdallah, King's College London.
 *	All rights reserved.
 *
 *	This software is provided AS iS and WITHOUT ANY WARRANTY;
 *	without even the implied warranty of MERCHANTABILITY or
 *	FITNESS FOR A PARTICULAR PURPOSE.
 */

package samer.units;

import samer.maths.*;
import samer.core.*;
import samer.core.types.*;
import samer.audio.*;
import samer.tools.*;
import javax.sound.sampled.*;

/**
	A class which takes real valued samples from a VVector, converts
	them to 16 bit integer samples, and writes them to an audio
	device.

	<p>
	Can optionally output only a sub-window of input vector
	This window is adjustable on the fly, so, for example, we can
	output the last M samples of a sliding window.

	*/

public class LineOut implements Task
{
	AudioSink		sink;
	Task					writer=new NullTask();

	Vec						vec;
	int						i0, i1;

	public LineOut(Vec buf, AudioSink sink) throws Exception {
		this.sink=sink; setInput(buf);
	}

	public Vec input() { return vec; }
	public AudioSink getSink() { return sink; }
	public void setSink(AudioSink sink) { this.sink=sink; setWindow(i0,i1); }
	public void setInput(Vec vec) { this.vec=vec; setWindow(0,vec.size()); }
	public void setWindow(int a,int b) {
		i0=a; i1=b;  writer=sink.writer(vec.array(),i0,i1-i0);
	}

	public void dispose() { writer.dispose(); sink.dispose(); }
	public void starting() { writer.starting(); }
	public void stopping() { writer.stopping(); }
	public void run() throws Exception { writer.run(); }
}