com.liferay.adaptive.media.image.internal.scaler.AMDefaultImageScaler.java Source code

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Here is the source code for com.liferay.adaptive.media.image.internal.scaler.AMDefaultImageScaler.java

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/**
 * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation; either version 2.1 of the License, or (at your option)
 * any later version.
 *
 * This library 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 Lesser General Public License for more
 * details.
 */

package com.liferay.adaptive.media.image.internal.scaler;

import com.liferay.adaptive.media.exception.AMRuntimeException;
import com.liferay.adaptive.media.image.configuration.AMImageConfigurationEntry;
import com.liferay.adaptive.media.image.internal.processor.util.TiffOrientationTransformer;
import com.liferay.adaptive.media.image.internal.util.RenderedImageUtil;
import com.liferay.adaptive.media.image.scaler.AMImageScaledImage;
import com.liferay.adaptive.media.image.scaler.AMImageScaler;
import com.liferay.portal.kernel.exception.PortalException;
import com.liferay.portal.kernel.image.ImageToolUtil;
import com.liferay.portal.kernel.repository.model.FileVersion;
import com.liferay.portal.kernel.util.GetterUtil;
import com.liferay.portal.kernel.util.StringBundler;

import java.awt.image.RenderedImage;

import java.io.IOException;
import java.io.InputStream;

import java.util.Map;

import org.osgi.service.component.annotations.Component;
import org.osgi.service.component.annotations.Reference;

/**
 * @author Adolfo Prez
 */
@Component(immediate = true, property = { "mime.type=*" }, service = { AMDefaultImageScaler.class,
        AMImageScaler.class })
public class AMDefaultImageScaler implements AMImageScaler {

    @Override
    public AMImageScaledImage scaleImage(FileVersion fileVersion,
            AMImageConfigurationEntry amImageConfigurationEntry) {

        try {
            RenderedImage renderedImage = _tiffOrientationTransformer.transform(() -> _getInputStream(fileVersion));

            Map<String, String> properties = amImageConfigurationEntry.getProperties();

            int maxHeight = GetterUtil.getInteger(properties.get("max-height"));
            int maxWidth = GetterUtil.getInteger(properties.get("max-width"));

            RenderedImage scaledRenderedImage = ImageToolUtil.scale(renderedImage, maxHeight, maxWidth);

            return new AMImageScaledImageImpl(
                    RenderedImageUtil.getRenderedImageContentStream(scaledRenderedImage, fileVersion.getMimeType()),
                    scaledRenderedImage.getHeight(), scaledRenderedImage.getWidth());
        } catch (IOException | PortalException e) {
            StringBundler sb = new StringBundler(4);

            sb.append("Unable to scale file entry ");
            sb.append(fileVersion.getFileEntryId());
            sb.append(" to match adaptive media configuration ");
            sb.append(amImageConfigurationEntry.getUUID());

            throw new AMRuntimeException.IOException(sb.toString(), e);
        }
    }

    private InputStream _getInputStream(FileVersion fileVersion) {
        try {
            return fileVersion.getContentStream(false);
        } catch (PortalException pe) {
            throw new AMRuntimeException.IOException(pe);
        }
    }

    @Reference
    private TiffOrientationTransformer _tiffOrientationTransformer;

}