001/*
002 * (C) Copyright 2006-2007 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Nuxeo - initial API and implementation
018 *
019 */
020package org.nuxeo.ecm.platform.picture.convert;
021
022import java.io.Serializable;
023import java.util.ArrayList;
024import java.util.List;
025import java.util.Map;
026
027import org.nuxeo.ecm.core.api.Blob;
028import org.nuxeo.ecm.core.api.blobholder.BlobHolder;
029import org.nuxeo.ecm.core.convert.api.ConversionException;
030import org.nuxeo.ecm.core.convert.cache.SimpleCachableBlobHolder;
031import org.nuxeo.ecm.core.convert.extension.Converter;
032import org.nuxeo.ecm.core.convert.extension.ConverterDescriptor;
033import org.nuxeo.ecm.platform.picture.api.ImagingConvertConstants;
034import org.nuxeo.ecm.platform.picture.api.ImagingService;
035import org.nuxeo.runtime.api.Framework;
036
037/**
038 * @author <a href="mailto:[email protected]">Laurent Doguint</a>
039 */
040public class RotationPictureConverter implements Converter {
041
042    @Override
043    public BlobHolder convert(BlobHolder blobHolder, Map<String, Serializable> parameters) throws ConversionException {
044        ImagingService service = Framework.getService(ImagingService.class);
045        List<Blob> results = new ArrayList<Blob>();
046        List<Blob> sources = blobHolder.getBlobs();
047        int angle = (Integer) parameters.get(ImagingConvertConstants.OPTION_ROTATE_ANGLE);
048        for (Blob source : sources) {
049            if (source != null) {
050                Blob result = service.rotate(source, angle);
051                if (result != null) {
052                    results.add(result);
053                }
054            }
055        }
056        return new SimpleCachableBlobHolder(results);
057    }
058
059    @Override
060    public void init(ConverterDescriptor descriptor) {
061    }
062
063}