/*
* This file is part of rockframework.
*
* rockframework is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* rockframework 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>;.
*/
package br.net.woodstock.rockframework.image;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Array;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.apache.sanselan.ImageReadException;
import org.apache.sanselan.Sanselan;
import org.apache.sanselan.common.IImageMetadata;
import org.apache.sanselan.common.RationalNumber;
import org.apache.sanselan.formats.jpeg.JpegImageMetadata;
import org.apache.sanselan.formats.tiff.TiffField;
import org.apache.sanselan.formats.tiff.TiffImageMetadata;
import org.apache.sanselan.formats.tiff.constants.TiffFieldTypeConstants;
import br.net.woodstock.rockframework.utils.ArrayUtils;
import br.net.woodstock.rockframework.utils.IOUtils;
import br.net.woodstock.rockframework.utils.NumberUtils;
public final class SanselanExifReader implements ExifReader {
private static ExifReader instance = new SanselanExifReader();
private SanselanExifReader() {
super();
}
@Override
@SuppressWarnings("unchecked")
public Map<String, String> getHeaders(final InputStream inputStream) throws IOException {
try {
IImageMetadata metadata = Sanselan.getMetadata(IOUtils.toByteArray(inputStream));
JpegImageMetadata jpegMetadata = (JpegImageMetadata) metadata;
if (jpegMetadata != null) {
TiffImageMetadata exif = jpegMetadata.getExif();
if (exif != null) {
Map<String, String> headers = new HashMap<String, String>();
List<TiffField> fields = exif.getAllFields();
for (TiffField field : fields) {
String key = field.getTagName();
String value = this.getFieldValue(field);
headers.put(key, value);
}
return headers;
}
}
return new HashMap<String, String>();
} catch (ImageReadException e) {
throw new IOException(e);
}
}
private String getFieldValue(final TiffField field) throws ImageReadException {
Object value = field.getValue();
if (value != null) {
if (value instanceof Number) {
return value.toString();
}
if (value instanceof RationalNumber) {
RationalNumber rn = (RationalNumber) value;
return rn.toDisplayString();
}
if (value instanceof String) {
if (field.getFieldTypeName().equals(TiffFieldTypeConstants.FIELD_TYPE_UNDEFINED.name)) {
byte[] bytes = ((String) value).getBytes();
return ArrayUtils.toString(bytes);
}
return (String) value;
}
if (value.getClass().isArray()) {
int len = Array.getLength(value);
int[] array = new int[len];
for (int i = 0; i < len; i++) {
Byte b = (Byte) Array.get(value, i);
array[i] = NumberUtils.unsignedByteToInt(b.byteValue());
}
return ArrayUtils.toString(array);
}
throw new IllegalArgumentException("Classe nao tratada: " + value.getClass().getCanonicalName());
}
return null;
}
public static ExifReader getInstance() {
return SanselanExifReader.instance;
}
}