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https://issues.apache.org/jira/browse/SANSELAN-38?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Charles Matthew Chen resolved SANSELAN-38.
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Resolution: Fixed
Commited patch from James EJ.
Added image from James EJ to test suite.
http://svn.apache.org/viewvc?view=revision&revision=995556
> JpegImageMetadata getEXIFThumbnail only works on Jpeg thumbnails stored as
> Tiff images.
> ---------------------------------------------------------------------------------------
>
> Key: SANSELAN-38
> URL: https://issues.apache.org/jira/browse/SANSELAN-38
> Project: Commons Sanselan
> Issue Type: Bug
> Environment: Windows Vista, Java 6 SE, incubator 0.97 and 0.98
> SNAPSHOT
> Reporter: James E-J
> Attachments: img_F028c_small.jpg, jamesEJ_jpeg_patch.txt
>
> Original Estimate: 0.33h
> Remaining Estimate: 0.33h
>
> JpegImageMetadata jpegMetadata = (JpegImageMetadata) metadata;
> BufferedImage image = jpegMetadata.getEXIFThumbnail();
> Above code seaches tiff directory structure but only searches for
> dir.getTiffImage() and only checks if tiffImageData is null. Jpeg files which
> have Jpeg thumbs stored as JpegImageData do not work.
> I was able to fix this with following code:
> import org.apache.sanselan.formats.tiff.JpegImageData;
> import javax.imageio.ImageIO;
> import java.io.ByteArrayInputStream;
> public BufferedImage getEXIFThumbnail() throws ImageReadException,
> IOException {
> ArrayList dirs = exif.getDirectories();
> for (int i = 0; i < dirs.size(); i++) {
> TiffImageMetadata.Directory dir =
> (TiffImageMetadata.Directory) dirs
> .get(i);
> // Debug.debug("dir", dir);
> BufferedImage image = dir.getThumbnail();
> if (null != image)
> return image;
> JpegImageData jpegImageData = dir.getJpegImageData();
> if(jpegImageData!=null){
> ByteArrayInputStream input = new
> ByteArrayInputStream(jpegImageData.data);
> image = ImageIO.read(input);
> if (image!=null)
> return image;
> }
> }
> return null;
> }
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