Package org.apache.sanselan.formats.jpeg.exif

Source Code of org.apache.sanselan.formats.jpeg.exif.ExifBaseTest

/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/

package org.apache.sanselan.formats.jpeg.exif;

import java.io.File;
import java.io.IOException;
import java.util.List;

import org.apache.sanselan.ImageReadException;
import org.apache.sanselan.SanselanTest;
import org.apache.sanselan.common.byteSources.ByteSource;
import org.apache.sanselan.common.byteSources.ByteSourceFile;
import org.apache.sanselan.formats.jpeg.JpegImageParser;

public abstract class ExifBaseTest extends SanselanTest
{
  //  public ExifBaseTest(String name)
  //  {
  //    super(name);
  //  }

  protected static boolean hasExifData(File file) throws IOException,
      ImageReadException
  {
    //    Debug.debug("hasExifData file", file.getAbsoluteFile());

    if (!file.getName().toLowerCase().endsWith(".jpg"))
      return false;
    //ImageFormat format = Sanselan.guessFormat(file);
    //if (format != ImageFormat.IMAGE_FORMAT_JPEG)
    //  return false;

    //    Debug.debug("possible file", file);

    try
    {
      ByteSource byteSource = new ByteSourceFile(file);
      return new JpegImageParser().hasExifSegment(byteSource);
    }
    catch (Exception e)
    {
      //      Debug.debug("Error file", file.getAbsoluteFile());
      //      Debug.debug(e, 4);
      return false;
    }
  }

  private static final ImageFilter HAS_EXIF_IMAGE_FILTER = new ImageFilter()
  {
    public boolean accept(File file) throws IOException, ImageReadException
    {
      return hasExifData(file);
    }
  };

  private static final ImageFilter JPEG_IMAGE_FILTER = new ImageFilter()
  {
    public boolean accept(File file) throws IOException, ImageReadException
    {
      return file.getName().toLowerCase().endsWith(".jpg");
    }
  };

  protected File getImageWithExifData() throws IOException,
      ImageReadException
  {
    return getTestImage(HAS_EXIF_IMAGE_FILTER);
  }

  protected List getImagesWithExifData() throws IOException,
      ImageReadException
  {
    return getTestImages(HAS_EXIF_IMAGE_FILTER);
  }

  protected List getImagesWithExifData(int max) throws IOException,
      ImageReadException
  {
    return getTestImages(HAS_EXIF_IMAGE_FILTER, max);
  }

  protected File getJpegImage() throws IOException, ImageReadException
  {
    return getTestImage(JPEG_IMAGE_FILTER);
  }

  protected List getJpegImages() throws IOException, ImageReadException
  {
    return getTestImages(JPEG_IMAGE_FILTER);
  }

  protected List getJpegImages(int max) throws IOException,
      ImageReadException
  {
    return getTestImages(JPEG_IMAGE_FILTER, max);
  }

}
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