org.photovault.imginfo.CreatePreviewImagesTask.java Source code

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Here is the source code for org.photovault.imginfo.CreatePreviewImagesTask.java

Source

/*
  Copyright (c) 2010 Harri Kaimio
    
  This file is part of Photovault.
    
  Photovault 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.
    
  Photovault is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even therrore 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 Photovault; if not, write to the Free Software Foundation,
  Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
 */

package org.photovault.imginfo;

import java.util.EnumSet;
import java.util.UUID;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.photovault.command.CommandException;
import org.photovault.image.PhotovaultImage;
import org.photovault.persistence.DAOFactory;
import org.photovault.persistence.HibernateDAOFactory;
import org.photovault.taskscheduler.BackgroundTask;

/**
 * Task for creating all needed preview images for given photo
 * @author harri
 */
public class CreatePreviewImagesTask extends BackgroundTask {

    Log log = LogFactory.getLog(CreatePreviewImagesTask.class);
    private UUID photoUuid;

    public CreatePreviewImagesTask(PhotoInfo p) {
        photoUuid = p.getUuid();

    }

    @Override
    public void run() {
        HibernateDAOFactory df = (HibernateDAOFactory) DAOFactory.instance(HibernateDAOFactory.class);
        df.setSession(session);
        PhotoInfo p = df.getPhotoInfoDAO().findByUUID(photoUuid);
        if (p != null) {
            try {
                createPreviewInstances(null, p, df);
            } catch (CommandException ex) {
                log.warn(ex);
            }
        }
    }

    private void createPreviewInstances(PhotovaultImage img, PhotoInfo p, DAOFactory f) throws CommandException {
        long startTime = System.currentTimeMillis();
        ImageDescriptorBase thumbImage = p.getPreferredImage(EnumSet.allOf(ImageOperations.class),
                EnumSet.allOf(ImageOperations.class), 0, 0, 200, 200);

        // Preview image with no cropping, longer side 1280 pixels
        int origWidth = p.getOriginal().getWidth();
        int origHeight = p.getOriginal().getHeight();

        int copyMinWidth = Math.min(origWidth, 1280);
        int copyMinHeight = 0;
        if (origHeight > origWidth) {
            copyMinHeight = Math.min(origHeight, 1280);
            copyMinWidth = 0;
        }
        EnumSet<ImageOperations> previewOps = EnumSet.of(ImageOperations.RAW_CONVERSION, ImageOperations.COLOR_MAP);
        ImageDescriptorBase previewImage = p.getPreferredImage(previewOps, previewOps, copyMinWidth, copyMinHeight,
                1280, 1280);

        Volume vol = f.getVolumeDAO().getDefaultVolume();
        long previewImageTime = -1;
        if (previewImage == null) {
            long previewStart = System.currentTimeMillis();
            CreateCopyImageCommand cmd = new CreateCopyImageCommand(img, p, vol, 1280, 1280);
            cmd.setLowQualityAllowed(false);
            cmd.setOperationsToApply(previewOps);
            cmdHandler.executeCommand(cmd);
            previewImageTime = System.currentTimeMillis() - previewStart;
        }
        long thumbTime = -1;
        if (thumbImage == null) {
            long thumbStart = System.currentTimeMillis();
            CreateCopyImageCommand cmd = new CreateCopyImageCommand(img, p, vol, 200, 200);
            cmd.setLowQualityAllowed(true);
            cmdHandler.executeCommand(cmd);
            thumbTime = System.currentTimeMillis() - thumbStart;
        }
        long totalTime = System.currentTimeMillis() - startTime;
        log.debug("preview " + previewImageTime + " ms, thumb " + thumbTime + " ms, total " + totalTime + " ms");
    }

}