com.twelvemonkeys.imageio.plugins.jpeg.JFIFThumbnailReader Maven / Gradle / Ivy

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/*
 * Copyright (c) 2012, Harald Kuhr
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name "TwelveMonkeys" nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.twelvemonkeys.imageio.plugins.jpeg;

import java.awt.image.BufferedImage;
import java.io.IOException;

/**
 * JFIFThumbnailReader
 *
 * @author Harald Kuhr
 * @author last modified by $Author: haraldk$
 * @version $Id: JFIFThumbnailReader.java,v 1.0 18.04.12 12:19 haraldk Exp$
 */
final class JFIFThumbnailReader extends ThumbnailReader {
    private final JFIFSegment segment;

    public JFIFThumbnailReader(ThumbnailReadProgressListener progressListener, int imageIndex, int thumbnailIndex, JFIFSegment segment) {
        super(progressListener, imageIndex, thumbnailIndex);
        this.segment = segment;
    }

    @Override
    public BufferedImage read() {
        processThumbnailStarted();
        BufferedImage thumbnail = readRawThumbnail(segment.thumbnail, segment.thumbnail.length, 0, segment.xThumbnail, segment.yThumbnail);
        processThumbnailProgress(100f);
        processThumbnailComplete();

        return thumbnail;
    }

    @Override
    public int getWidth() throws IOException {
        return segment.xThumbnail;
    }

    @Override
    public int getHeight() throws IOException {
        return segment.yThumbnail;
    }
}