001/**
002 * Copyright (c) 2011, The University of Southampton and the individual contributors.
003 * All rights reserved.
004 *
005 * Redistribution and use in source and binary forms, with or without modification,
006 * are permitted provided that the following conditions are met:
007 *
008 *   *  Redistributions of source code must retain the above copyright notice,
009 *      this list of conditions and the following disclaimer.
010 *
011 *   *  Redistributions in binary form must reproduce the above copyright notice,
012 *      this list of conditions and the following disclaimer in the documentation
013 *      and/or other materials provided with the distribution.
014 *
015 *   *  Neither the name of the University of Southampton nor the names of its
016 *      contributors may be used to endorse or promote products derived from this
017 *      software without specific prior written permission.
018 *
019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
020 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
021 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
022 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
023 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
025 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
026 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
027 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
028 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
029 */
030/**
031 * 
032 */
033package org.openimaj.demos.sandbox.audio;
034
035import java.io.File;
036
037import org.openimaj.audio.AudioStream;
038import org.openimaj.audio.SampleChunk;
039import org.openimaj.audio.analysis.PowerCepstrumTransform;
040import org.openimaj.image.DisplayUtilities;
041import org.openimaj.image.FImage;
042import org.openimaj.video.xuggle.XuggleAudio;
043
044/**
045 *      
046 *
047 *      @author David Dupplaw (dpd@ecs.soton.ac.uk)
048 *  @created 23 Jul 2012
049 *      @version $Author$, $Revision$, $Date$
050 */
051public class PowerCepstrumVis
052{
053        /**
054         * 
055         *      @param as
056         *      @throws Exception
057         */
058        public PowerCepstrumVis( AudioStream as ) throws Exception
059    {
060                FImage img = new FImage( 1000, 600 );
061
062                PowerCepstrumTransform pct = new PowerCepstrumTransform();
063                
064                SampleChunk sc = null;
065                while( (sc = as.nextSampleChunk()) != null )
066                {
067                        pct.process( sc );
068                        float[][] c = pct.getLastCepstrum();
069                        for( int i = 0; i < c[0].length; i++ )
070                                img.setPixel( img.getWidth()-1, i, c[0][i]/50f );
071                        img.shiftLeftInplace();
072                        
073                        DisplayUtilities.displayName( img, "Power Cepstrum" );
074                }
075    }
076        
077        /**
078         * 
079         *      @param args
080         *      @throws Exception
081         */
082        public static void main( String[] args ) throws Exception
083    {
084                XuggleAudio as = new XuggleAudio( new File("/home/dd/mel.mp4" ) );
085            new PowerCepstrumVis( as );
086    }
087}