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 org.openimaj.audio.AudioMixer;
036import org.openimaj.audio.processor.FixedSizeSampleAudioProcessor;
037import org.openimaj.video.xuggle.XuggleAudio;
038
039/**
040 *      SampleChunk is going to be updated to use system.arraycopy. Just wondering
041 *      how much faster it will be afterwards.
042 *
043 *      @author David Dupplaw (dpd@ecs.soton.ac.uk)
044 *      
045 *      @created 27 Nov 2011
046 */
047public class AudioDecodingSpeedTest
048{
049        /**
050         *      
051         */
052        public AudioDecodingSpeedTest()
053        {
054                XuggleAudio xa1 = new XuggleAudio(
055                                AudioMixer.class.getResource("/org/openimaj/demos/audio/140bpm-Arp.mp3") );
056                
057                FixedSizeSampleAudioProcessor f = new FixedSizeSampleAudioProcessor( xa1, 256 );
058
059                long start = System.currentTimeMillis();
060                
061                while( f.nextSampleChunk() != null );
062                
063                long end = System.currentTimeMillis();
064                
065                long diff = end-start;
066                System.out.println( (diff/1000d) + " seconds");
067                
068                // ------------ Results --------------
069                // Rougly 0.62 to 0.7 seconds before System.arraycopy() used.
070                // Rougly 0.52 to 0.6 seconds after System.arraycopy() used.
071        }
072        
073        /**
074         *      @param args
075         */
076        public static void main( String[] args )
077        {
078                new AudioDecodingSpeedTest();
079        }
080}