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.audio;
034
035import java.io.File;
036import java.io.IOException;
037
038import org.openimaj.demos.Demo;
039import org.openimaj.image.DisplayUtilities;
040import org.openimaj.image.ImageUtilities;
041import org.openimaj.image.MBFImage;
042import org.openimaj.video.xuggle.XuggleAudio;
043
044/**
045 *      Utilises an audio processor to plot the audio waveform.
046 *
047 *  @author David Dupplaw (dpd@ecs.soton.ac.uk)
048 *
049 *      @created 9 Jun 2011
050 */
051@Demo(
052        author = "David Dupplaw",
053        description = "Demonstrates reading an audio file and plotting the waveform" +
054                        " into an image.",
055        keywords = { "audio", "image", "waveform" },
056        title = "Audio Waveform Plotter",
057        icon = "/org/openimaj/demos/icons/audio/audio-waveform-icon.png"
058)
059public class AudioWaveformPlotter
060{
061        /**
062         *      Default main
063         *  @param args Command-line arguments
064         */
065        public static void main( final String[] args )
066    {
067                // Open the audio stream
068            final XuggleAudio a = new XuggleAudio( AudioWaveformPlotter.class.
069                        getResource( "/org/openimaj/demos/audio/140bpm_formware_psytech.mp3" ) );
070
071            // This is how wide we're going to draw the display
072            final int w = 1920;
073
074            // This is how high we'll draw the display
075            final int h = 200;
076
077            final MBFImage img = org.openimaj.vis.audio.AudioOverviewVisualisation.
078                        getAudioWaveformImage( a, w, h, new Float[]{0f,0f,0f,1f},
079                                        new Float[]{1f,1f,1f,1f} );
080
081            // Write the image to a file.
082                try
083                {
084                        ImageUtilities.write( img, "png", new File("audioWaveform.png") );
085                }
086                catch( final IOException e )
087                {
088                        e.printStackTrace();
089                }
090
091                // Display the image
092                DisplayUtilities.display( img );
093    }
094}