samer@0: /*
samer@0:  *	Copyright (c) 2000, Samer Abdallah, King's College London.
samer@0:  *	All rights reserved.
samer@0:  *
samer@0:  *	This software is provided AS iS and WITHOUT ANY WARRANTY;
samer@0:  *	without even the implied warranty of MERCHANTABILITY or
samer@0:  *	FITNESS FOR A PARTICULAR PURPOSE.
samer@0:  */
samer@0: 
samer@0: package samer.units;
samer@0: 
samer@0: import samer.maths.*;
samer@0: import samer.core.*;
samer@0: import samer.core.types.*;
samer@0: import samer.audio.*;
samer@0: import samer.tools.*;
samer@0: import javax.sound.sampled.*;
samer@0: 
samer@0: /**
samer@0: 	A class which takes real valued samples from a VVector, converts
samer@0: 	them to 16 bit integer samples, and writes them to an audio
samer@0: 	device.
samer@0: 
samer@0: 	<p>
samer@0: 	Can optionally output only a sub-window of input vector
samer@0: 	This window is adjustable on the fly, so, for example, we can
samer@0: 	output the last M samples of a sliding window.
samer@0: 
samer@0: 	*/
samer@0: 
samer@0: public class LineOut implements Task
samer@0: {
samer@0: 	AudioSink		sink;
samer@0: 	Task					writer=new NullTask();
samer@0: 
samer@0: 	Vec						vec;
samer@0: 	int						i0, i1;
samer@0: 
samer@0: 	public LineOut(Vec buf, AudioSink sink) throws Exception {
samer@0: 		this.sink=sink; setInput(buf);
samer@0: 	}
samer@0: 
samer@0: 	public Vec input() { return vec; }
samer@0: 	public AudioSink getSink() { return sink; }
samer@0: 	public void setSink(AudioSink sink) { this.sink=sink; setWindow(i0,i1); }
samer@0: 	public void setInput(Vec vec) { this.vec=vec; setWindow(0,vec.size()); }
samer@0: 	public void setWindow(int a,int b) {
samer@0: 		i0=a; i1=b;  writer=sink.writer(vec.array(),i0,i1-i0);
samer@0: 	}
samer@0: 
samer@0: 	public void dispose() { writer.dispose(); sink.dispose(); }
samer@0: 	public void starting() { writer.starting(); }
samer@0: 	public void stopping() { writer.stopping(); }
samer@0: 	public void run() throws Exception { writer.run(); }
samer@0: }
samer@0: