[IMAGING-137] Can not set EXIF_TAG_EXIF_VERSION tag

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.0-alpha1
• Fix Version/s: 1.0-alpha1
• Component/s: Format: TIFF
• Labels: features

Environment

java 1.7.0_55 Commons-Imaging (build date is 3/25/2014)

• Assignee: Unassigned
• Reporter: Ted Troccola
• Created: 09/Jul/14 12:18
• Updated: 03/May/19 08:39
• Resolved: 19/Oct/14 07:23

Description

I am unable to set EXIF_TAG_EXIF_VERSION.

I am using Maven with the following settings (the build date is 3/25/2014):
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-imaging</artifactId>
<version>1.0-SNAPSHOT</version>
<scope>compile</scope>
</dependency>

<repository>
<id>apache.snapshots</id>
<url>http://repository.apache.org/snapshots/</url>
</repository>

I get exceptions because it expects only 1 byte.

If I debug and inspect the metadata for a JPG file with proper Exif data, it shows 4 bytes (48,50,50,48). This is consistent with this reference

Here is my code. To run, change the file names and run.

import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.List;
import org.apache.commons.imaging.ImageReadException;
import org.apache.commons.imaging.ImageWriteException;
import org.apache.commons.imaging.Imaging;
import org.apache.commons.imaging.common.IImageMetadata;
import org.apache.commons.imaging.common.IImageMetadata.IImageMetadataItem;
import org.apache.commons.imaging.formats.jpeg.JpegImageMetadata;
import org.apache.commons.imaging.formats.jpeg.exif.ExifRewriter;
import org.apache.commons.imaging.formats.tiff.TiffImageMetadata;
import org.apache.commons.imaging.formats.tiff.constants.ExifTagConstants;
import org.apache.commons.imaging.formats.tiff.write.TiffOutputDirectory;
import org.apache.commons.imaging.formats.tiff.write.TiffOutputSet;

public class ExifExample
{
public static void logImageMetaData(final File jpgImageFile) throws ImageReadException, IOException
{
// Get all metadata stored in Exif format (i.e., from JPEG or TIFF).
final IImageMetadata metadata = Imaging.getMetadata(jpgImageFile);

if (metadata instanceof JpegImageMetadata)
{
final JpegImageMetadata jpegMetadata = (JpegImageMetadata) metadata;

final List<IImageMetadataItem> items = jpegMetadata.getItems();
for (int i = 0; i < items.size(); i++)

{ final IImageMetadataItem item = items.get(i); System.out.println(" " + "item: " + item); }

}
}

private static TiffOutputSet getMetadata(final File jpegImageFile) throws ImageReadException, IOException, ImageWriteException
{
TiffOutputSet outputSet = null;

// metadata might be null if no metadata is found.
final IImageMetadata metadata = Imaging.getMetadata(jpegImageFile);
final JpegImageMetadata jpegMetadata = (JpegImageMetadata) metadata;
if (null != jpegMetadata)
{
// Exif might be null if no Exif metadata is found.
final TiffImageMetadata exif = jpegMetadata.getExif();

if (null != exif)

{ /* TiffImageMetadata class is immutable (read-only). * TiffOutputSet class represents the Exif data to write. * * Usually, we want to update existing Exif metadata by changing * the values of a few fields, or adding a field. * * In these cases, it is easiest to use getOutputSet() to * start with a "copy" of the fields read from the image. */ outputSet = exif.getOutputSet(); }

}
return outputSet;
}

public static void writeExifData(File jpegImageFile, File destImageFile) throws IOException, ImageReadException, ImageWriteException
{
try (OutputStream os = new BufferedOutputStream(new FileOutputStream(destImageFile)))

{ TiffOutputSet outputSet = new TiffOutputSet(); // Create the Exif directory tags final TiffOutputDirectory exifDirectory = outputSet.getOrCreateExifDirectory(); /* * TODO: How do you set ExifVersion * * Exception in thread "main" org.apache.commons.imaging.ImageWriteException: Tag expects 1 value(s), not 4 at org.apache.commons.imaging.formats.tiff.write.TiffOutputDirectory.add(TiffOutputDirectory.java:91) at com.ttinc.util.exif.ExifExample.writeExifData(ExifExample.java:81) at com.ttinc.util.exif.ExifExample.main(ExifExample.java:91) */ exifDirectory.add(ExifTagConstants.EXIF_TAG_EXIF_VERSION, "0221".getBytes()); new ExifRewriter().updateExifMetadataLossless(jpegImageFile, os, outputSet); }

}

public static void main(String args[]) throws Exception

{ File destinationImageFile = new File("C:\\temp\\DestImage.jpg"); writeExifData(new File("C:\\temp\\SourceImage.jpg"), destinationImageFile); logImageMetaData(destinationImageFile); }

}