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}