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 */ 030package org.openimaj.demos.video.utils; 031 032import java.awt.event.KeyEvent; 033import java.awt.event.KeyListener; 034 035import org.openimaj.image.MBFImage; 036import org.openimaj.video.VideoDisplay; 037import org.openimaj.video.xuggle.XuggleVideo; 038 039/** 040 * Listen for numeric key presses and seek the video 041 * 042 * @author Sina Samangooei (ss@ecs.soton.ac.uk) 043 * 044 */ 045public class NumberKeySeekListener implements KeyListener { 046 047 private final VideoDisplay<MBFImage> display; 048 private final long duration; 049 050 /** 051 * Construct with the given display 052 * @param videoDisplay 053 */ 054 public NumberKeySeekListener(final VideoDisplay<MBFImage> videoDisplay) { 055 this.display = videoDisplay; 056 if(!(this.display.getVideo() instanceof XuggleVideo)){ 057 throw new UnsupportedOperationException("You can only seek in xuggle videos"); 058 } 059 final XuggleVideo v = (XuggleVideo) this.display.getVideo(); 060 this.duration = v.getDuration(); 061// System.out.println("Video duration is: " + duration); 062 } 063 064 @Override 065 public void keyPressed(final KeyEvent keyEvent) { 066 if(keyEvent.getKeyCode() >= KeyEvent.VK_0 && keyEvent.getKeyCode() <= KeyEvent.VK_9 ){ 067 final float number = keyEvent.getKeyCode() - KeyEvent.VK_0; 068 final double toSeek = (this.duration * (number/10.f)); 069// System.out.println(this.display.getVideo().getFPS()); 070// System.out.println("Seeking to: " + toSeek); 071 this.display.seek((long)toSeek); 072 } 073 } 074 075 @Override 076 public void keyReleased(final KeyEvent keyEvent) {} 077 078 @Override 079 public void keyTyped(final KeyEvent keyEvent) {this.keyPressed(keyEvent);} 080 081}