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}