SilenceTest.java

/*
*      _______                       _____   _____ _____  
*     |__   __|                     |  __ \ / ____|  __ \ 
*        | | __ _ _ __ ___  ___  ___| |  | | (___ | |__) |
*        | |/ _` | '__/ __|/ _ \/ __| |  | |\___ \|  ___/ 
*        | | (_| | |  \__ \ (_) \__ \ |__| |____) | |     
*        |_|\__,_|_|  |___/\___/|___/_____/|_____/|_|     
*                                                         
* -------------------------------------------------------------
*
* TarsosDSP is developed by Joren Six at IPEM, University Ghent
*  
* -------------------------------------------------------------
*
*  Info: http://0110.be/tag/TarsosDSP
*  Github: https://github.com/JorenSix/TarsosDSP
*  Releases: http://0110.be/releases/TarsosDSP/
*  
*  TarsosDSP includes modified source code by various authors,
*  for credits and info, see README.
* 
*/


package be.tarsos.dsp.test;

import static org.junit.Assert.assertEquals;

import java.io.ByteArrayInputStream;

import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.LineUnavailableException;
import javax.sound.sampled.UnsupportedAudioFileException;

import org.junit.Test;

import be.tarsos.dsp.AudioDispatcher;
import be.tarsos.dsp.SilenceDetector;
import be.tarsos.dsp.io.TarsosDSPAudioFloatConverter;
import be.tarsos.dsp.io.jvm.AudioPlayer;
import be.tarsos.dsp.io.jvm.JVMAudioInputStream;

public class SilenceTest {
	
	@Test
	public void testSilenceDetector() throws UnsupportedAudioFileException, LineUnavailableException{
		final float[] floatSinBuffer = TestUtilities.audioBufferSine();
		final float[] floatSilenceBuffer = TestUtilities.audioBufferSilence();
		final float[] floatBuffer = new float[floatSinBuffer.length+(2 * floatSilenceBuffer.length)];
		int i = floatSilenceBuffer.length;
		for(;i<floatSilenceBuffer.length + floatSinBuffer.length;i++){
			floatBuffer[i]=floatSinBuffer[i-floatSilenceBuffer.length];
		}
		final AudioFormat format = new AudioFormat(44100, 16, 1, true, false);
		final TarsosDSPAudioFloatConverter converter = TarsosDSPAudioFloatConverter
				.getConverter(JVMAudioInputStream.toTarsosDSPFormat(format));
		final byte[] byteBuffer = new byte[floatBuffer.length
				* format.getFrameSize()];
		assertEquals("Specified 16 bits so framesize should be 2.", 2,
				format.getFrameSize());
		converter.toByteArray(floatBuffer, byteBuffer);
		final ByteArrayInputStream bais = new ByteArrayInputStream(byteBuffer);
		final AudioInputStream inputStream = new AudioInputStream(bais, format,
				floatBuffer.length);
		JVMAudioInputStream stream = new JVMAudioInputStream(inputStream);
		final AudioDispatcher dispatcher = new AudioDispatcher(stream,
				1024, 0);
		
        dispatcher.addAudioProcessor(new SilenceDetector());
        dispatcher.addAudioProcessor(new AudioPlayer(format));
        dispatcher.run();
	}

}