setntscca.java

编辑视频文件

/*
 * File:     SetNTSCCA.java
 * Project:  MPI Linguistic Application
 * Date:     02 May 2007
 *
 * Copyright (C) 2001-2007  Max Planck Institute for Psycholinguistics
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package mpi.eudico.client.annotator.commands;

import mpi.eudico.client.annotator.ViewerManager2;


/**
 * CommandAction to manually set the video standard (of the media file) to NTSC.<br>
 * This only influences the number of milliseconds per frame for Elan.<br>
 * NTSC is interlaced and has 59.94 / 2 frames per second, resulting in 1000 /
 * 29.97 = 33.3667 milliseconds, rounded to 33 ms per frame. See <a
 * href="http://archive.ncsa.uiuc.edu/SCMS/training/general/details/ntsc.html">NCSA
 * web site</a>.
 *
 * @author Han Sloetjes
 */
public class SetNTSCCA extends CommandAction {
    // the number of ms per frame

    /** Holds value of property DOCUMENT ME! */
    private final Object[] args = new Object[] { new Long(33L) };

    /**
     * Creates a new SetNTSCCA instance
     *
     * @param viewerManager DOCUMENT ME!
     */
    public SetNTSCCA(ViewerManager2 viewerManager) {
        super(viewerManager, ELANCommandFactory.SET_NTSC);
    }

    /**
     * DOCUMENT ME!
     */
    protected void newCommand() {
        command = ELANCommandFactory.createCommand(vm.getTranscription(),
                ELANCommandFactory.SET_NTSC);
    }

    /**
     * The receiver of this CommandAction is an ElanMediaPlayer.
     *
     * @return DOCUMENT ME!
     */
    protected Object getReceiver() {
        return vm.getMasterMediaPlayer();
    }

    /**
     * DOCUMENT ME!
     *
     * @return DOCUMENT ME!
     */
    protected Object[] getArguments() {
        return args;
    }
}