io.wcm.handler.media.spi.helpers.AbstractMediaHandlerConfig.java Source code

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Here is the source code for io.wcm.handler.media.spi.helpers.AbstractMediaHandlerConfig.java

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/*
 * #%L
 * wcm.io
 * %%
 * Copyright (C) 2014 wcm.io
 * %%
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * #L%
 */
package io.wcm.handler.media.spi.helpers;

import io.wcm.handler.media.format.MediaFormat;
import io.wcm.handler.media.markup.DummyImageMediaMarkupBuilder;
import io.wcm.handler.media.markup.SimpleImageMediaMarkupBuilder;
import io.wcm.handler.media.spi.MediaHandlerConfig;
import io.wcm.handler.media.spi.MediaMarkupBuilder;
import io.wcm.handler.media.spi.MediaProcessor;
import io.wcm.handler.media.spi.MediaSource;
import io.wcm.handler.mediasource.dam.DamMediaSource;

import java.util.List;
import java.util.Set;

import org.apache.commons.lang3.StringUtils;
import org.osgi.annotation.versioning.ConsumerType;

import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;

/**
 * Default implementation of configuration options of {@link MediaHandlerConfig} interface.
 * Subclasses may decide to override only some of the methods.
 */
@ConsumerType
public abstract class AbstractMediaHandlerConfig implements MediaHandlerConfig {

    private static final Set<MediaFormat> DOWNLOAD_MEDIA_FORMATS = ImmutableSet.of();

    private static final List<Class<? extends MediaSource>> MEDIA_SOURCES = ImmutableList
            .<Class<? extends MediaSource>>of(DamMediaSource.class);

    private static final List<Class<? extends MediaMarkupBuilder>> MEDIA_MARKUP_BUILDERS = ImmutableList
            .<Class<? extends MediaMarkupBuilder>>of(SimpleImageMediaMarkupBuilder.class,
                    DummyImageMediaMarkupBuilder.class);

    @Override
    public List<Class<? extends MediaSource>> getSources() {
        return MEDIA_SOURCES;
    }

    @Override
    public List<Class<? extends MediaMarkupBuilder>> getMarkupBuilders() {
        return MEDIA_MARKUP_BUILDERS;
    }

    @Override
    public List<Class<? extends MediaProcessor>> getPreProcessors() {
        // no processors
        return ImmutableList.of();
    }

    @Override
    public List<Class<? extends MediaProcessor>> getPostProcessors() {
        // no processors
        return ImmutableList.of();
    }

    @Override
    public Set<MediaFormat> getDownloadMediaFormats() {
        return DOWNLOAD_MEDIA_FORMATS;
    }

    @Override
    public double getDefaultImageQuality(String mimeType) {
        if (StringUtils.isNotEmpty(mimeType)) {
            String format = StringUtils.substringAfter(mimeType.toLowerCase(), "image/");
            if (StringUtils.equals(format, "jpg") || StringUtils.equals(format, "jpeg")) {
                return DEFAULT_JPEG_QUALITY;
            } else if (StringUtils.equals(format, "gif")) {
                return 256d; // 256 colors
            }
        }
        // return quality "1" for all other mime types
        return 1d;
    }

}