/*
* 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.tiff;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.apache.sanselan.ImageReadException;
import org.apache.sanselan.ImageWriteException;
import org.apache.sanselan.common.ImageMetadata;
import org.apache.sanselan.common.RationalNumber;
import org.apache.sanselan.formats.tiff.constants.TagInfo;
import org.apache.sanselan.formats.tiff.constants.TiffConstants;
import org.apache.sanselan.formats.tiff.constants.TiffDirectoryConstants;
import org.apache.sanselan.formats.tiff.fieldtypes.FieldType;
import org.apache.sanselan.formats.tiff.write.TiffOutputDirectory;
import org.apache.sanselan.formats.tiff.write.TiffOutputField;
import org.apache.sanselan.formats.tiff.write.TiffOutputSet;
import com.google.code.appengine.awt.image.BufferedImage;
public class TiffImageMetadata extends ImageMetadata
implements
TiffDirectoryConstants
{
public final TiffContents contents;
public TiffImageMetadata(final TiffContents contents)
{
this.contents = contents;
}
public static class Directory extends ImageMetadata
implements
ImageMetadata.IImageMetadataItem
{
// private BufferedImage thumbnail = null;
public final int type;
private final TiffDirectory directory;
public Directory(final TiffDirectory directory)
{
this.type = directory.type;
this.directory = directory;
}
public void add(TiffField entry)
{
add(new TiffImageMetadata.Item(entry));
}
public BufferedImage getThumbnail() throws ImageReadException,
IOException
{
return directory.getTiffImage();
}
public TiffImageData getTiffImageData()
{
return directory.getTiffImageData();
}
public TiffField findField(TagInfo tagInfo) throws ImageReadException
{
return directory.findField(tagInfo);
}
public List getAllFields() throws ImageReadException
{
return directory.getDirectoryEntrys();
}
public JpegImageData getJpegImageData()
{
return directory.getJpegImageData();
}
public String toString(String prefix)
{
return (prefix != null ? prefix : "") + directory.description()
+ ": " //
+ (getTiffImageData() != null ? " (tiffImageData)" : "") //
+ (getJpegImageData() != null ? " (jpegImageData)" : "") //
+ "\n" + super.toString(prefix) + "\n";
}
public TiffOutputDirectory getOutputDirectory(int byteOrder)
throws ImageWriteException
{
try
{
TiffOutputDirectory dstDir = new TiffOutputDirectory(type);
ArrayList entries = getItems();
for (int i = 0; i < entries.size(); i++)
{
TiffImageMetadata.Item item = (TiffImageMetadata.Item) entries
.get(i);
TiffField srcField = item.getTiffField();
if (null != dstDir.findField(srcField.tag))
{
// ignore duplicate tags in a directory.
continue;
}
else if (srcField.tagInfo instanceof TagInfo.Offset)
{
// ignore offset fields.
continue;
}
TagInfo tagInfo = srcField.tagInfo;
FieldType fieldType = srcField.fieldType;
int count = srcField.length;
// byte bytes[] = srcField.fieldType.getRawBytes(srcField);
// Debug.debug("tagInfo", tagInfo);
Object value = srcField.getValue();
// Debug.debug("value", Debug.getType(value));
byte bytes[] = tagInfo.encodeValue(fieldType, value,
byteOrder);
// if (tagInfo.isUnknown())
// Debug.debug(
// "\t" + "unknown tag(0x"
// + Integer.toHexString(srcField.tag)
// + ") bytes", bytes);
TiffOutputField dstField = new TiffOutputField(
srcField.tag, tagInfo, fieldType, count, bytes);
dstField.setSortHint(srcField.getSortHint());
dstDir.add(dstField);
}
dstDir.setTiffImageData(getTiffImageData());
dstDir.setJpegImageData(getJpegImageData());
return dstDir;
}
catch (ImageReadException e)
{
throw new ImageWriteException(e.getMessage(), e);
}
}
}
public ArrayList getDirectories()
{
return super.getItems();
}
public ArrayList getItems()
{
ArrayList result = new ArrayList();
ArrayList items = super.getItems();
for (int i = 0; i < items.size(); i++)
{
Directory dir = (Directory) items.get(i);
result.addAll(dir.getItems());
}
return result;
}
public static class Item extends ImageMetadata.Item
{
private final TiffField entry;
public Item(TiffField entry)
{
// super(entry.getTagName() + " (" + entry.getFieldTypeName() + ")",
super(entry.getTagName(), entry.getValueDescription());
this.entry = entry;
}
public TiffField getTiffField()
{
return entry;
}
}
public TiffOutputSet getOutputSet() throws ImageWriteException
{
int byteOrder = contents.header.byteOrder;
TiffOutputSet result = new TiffOutputSet(byteOrder);
ArrayList srcDirs = getDirectories();
for (int i = 0; i < srcDirs.size(); i++)
{
TiffImageMetadata.Directory srcDir = (TiffImageMetadata.Directory) srcDirs
.get(i);
if (null != result.findDirectory(srcDir.type))
{
// Certain cameras right directories more than once.
// This is a bug.
// Ignore second directory of a given type.
continue;
}
TiffOutputDirectory outputDirectory = srcDir
.getOutputDirectory(byteOrder);
result.addDirectory(outputDirectory);
}
return result;
}
public TiffField findField(TagInfo tagInfo) throws ImageReadException
{
ArrayList directories = getDirectories();
for (int i = 0; i < directories.size(); i++)
{
Directory directory = (Directory) directories.get(i);
TiffField field = directory.findField(tagInfo);
if (null != field)
return field;
}
return null;
}
public TiffDirectory findDirectory(int directoryType)
{
ArrayList directories = getDirectories();
for (int i = 0; i < directories.size(); i++)
{
Directory directory = (Directory) directories.get(i);
if (directory.type == directoryType)
return directory.directory;
}
return null;
}
public List getAllFields() throws ImageReadException
{
List result = new ArrayList();
ArrayList directories = getDirectories();
for (int i = 0; i < directories.size(); i++)
{
Directory directory = (Directory) directories.get(i);
result.addAll(directory.getAllFields());
}
return result;
}
public GPSInfo getGPS() throws ImageReadException
{
TiffDirectory gpsDirectory = findDirectory(DIRECTORY_TYPE_GPS);
if (null == gpsDirectory)
return null;
// more specific example of how to access GPS values.
TiffField latitudeRefField = gpsDirectory
.findField(TiffConstants.GPS_TAG_GPS_LATITUDE_REF);
TiffField latitudeField = gpsDirectory
.findField(TiffConstants.GPS_TAG_GPS_LATITUDE);
TiffField longitudeRefField = gpsDirectory
.findField(TiffConstants.GPS_TAG_GPS_LONGITUDE_REF);
TiffField longitudeField = gpsDirectory
.findField(TiffConstants.GPS_TAG_GPS_LONGITUDE);
if (latitudeRefField == null || latitudeField == null
|| longitudeRefField == null || longitudeField == null)
return null;
// all of these values are strings.
String latitudeRef = latitudeRefField.getStringValue();
RationalNumber latitude[] = (RationalNumber[]) latitudeField.getValue();
String longitudeRef = longitudeRefField.getStringValue();
RationalNumber longitude[] = (RationalNumber[]) longitudeField
.getValue();
if (latitude.length != 3 || longitude.length != 3)
throw new ImageReadException(
"Expected three values for latitude and longitude.");
RationalNumber latitudeDegrees = latitude[0];
RationalNumber latitudeMinutes = latitude[1];
RationalNumber latitudeSeconds = latitude[2];
RationalNumber longitudeDegrees = longitude[0];
RationalNumber longitudeMinutes = longitude[1];
RationalNumber longitudeSeconds = longitude[2];
return new GPSInfo(latitudeRef, longitudeRef, latitudeDegrees,
latitudeMinutes, latitudeSeconds, longitudeDegrees,
longitudeMinutes, longitudeSeconds);
}
public static class GPSInfo
{
public final String latitudeRef;
public final String longitudeRef;
public final RationalNumber latitudeDegrees;
public final RationalNumber latitudeMinutes;
public final RationalNumber latitudeSeconds;
public final RationalNumber longitudeDegrees;
public final RationalNumber longitudeMinutes;
public final RationalNumber longitudeSeconds;
public GPSInfo(final String latitudeRef, final String longitudeRef,
final RationalNumber latitudeDegrees,
final RationalNumber latitudeMinutes,
final RationalNumber latitudeSeconds,
final RationalNumber longitudeDegrees,
final RationalNumber longitudeMinutes,
final RationalNumber longitudeSeconds)
{
this.latitudeRef = latitudeRef;
this.longitudeRef = longitudeRef;
this.latitudeDegrees = latitudeDegrees;
this.latitudeMinutes = latitudeMinutes;
this.latitudeSeconds = latitudeSeconds;
this.longitudeDegrees = longitudeDegrees;
this.longitudeMinutes = longitudeMinutes;
this.longitudeSeconds = longitudeSeconds;
}
public String toString()
{
// This will format the gps info like so:
//
// latitude: 8 degrees, 40 minutes, 42.2 seconds S
// longitude: 115 degrees, 26 minutes, 21.8 seconds E
StringBuffer result = new StringBuffer();
result.append("[GPS. ");
result.append("Latitude: " + latitudeDegrees.toDisplayString()
+ " degrees, " + latitudeMinutes.toDisplayString()
+ " minutes, " + latitudeSeconds.toDisplayString()
+ " seconds " + latitudeRef);
result.append(", Longitude: " + longitudeDegrees.toDisplayString()
+ " degrees, " + longitudeMinutes.toDisplayString()
+ " minutes, " + longitudeSeconds.toDisplayString()
+ " seconds " + longitudeRef);
result.append("]");
return result.toString();
}
public double getLongitudeAsDegreesEast() throws ImageReadException
{
double result = longitudeDegrees.doubleValue()
+ (longitudeMinutes.doubleValue() / 60.0)
+ (longitudeSeconds.doubleValue() / 3600.0);
if (longitudeRef.trim().equalsIgnoreCase("e"))
return result;
else if (longitudeRef.trim().equalsIgnoreCase("w"))
return -result;
else
throw new ImageReadException("Unknown longitude ref: \""
+ longitudeRef + "\"");
}
public double getLatitudeAsDegreesNorth() throws ImageReadException
{
double result = latitudeDegrees.doubleValue()
+ (latitudeMinutes.doubleValue() / 60.0)
+ (latitudeSeconds.doubleValue() / 3600.0);
if (latitudeRef.trim().equalsIgnoreCase("n"))
return result;
else if (latitudeRef.trim().equalsIgnoreCase("s"))
return -result;
else
throw new ImageReadException("Unknown latitude ref: \""
+ latitudeRef + "\"");
}
}
}