Package com.drew.metadata

Examples of com.drew.metadata.Metadata

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  }

  private void initMetadata(){
    this.fileName = file.getName();
    try {
      Metadata metadata = JpegMetadataReader.readMetadata(file);     
      Iterator directories = metadata.getDirectoryIterator();
      while (directories.hasNext()) {
        Directory directory = (Directory)directories.next(); //iterate through tags and print to System.out
       
        // try to extract width and height
        try {width = directory.getInt(ExifDirectory.TAG_EXIF_IMAGE_WIDTH);} catch (MetadataException e){}
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    BufferedImage image = null;
   
    // Try to extract thumbnail from Exif header
    try {
      Metadata metadata = JpegMetadataReader.readMetadata(file);
      Iterator directories = metadata.getDirectoryIterator();
      while (directories.hasNext()) {
        Directory directory = (Directory) directories.next(); // iterate through tags
       
        if (directory instanceof ExifDirectory){
          ExifDirectory exifDir = (ExifDirectory) directory;
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    }

    public void testWindowsXpFields() throws Exception
    {
        String fileName = "src/com/drew/metadata/exif/test/windowsXpFields.jpg";
        Metadata metadata = new ExifReader(new File(fileName)).extract();
        Directory directory = metadata.getDirectory(ExifDirectory.class);
        ExifDescriptor descriptor = new ExifDescriptor(directory);
        assertEquals("Testing artist", descriptor.getDescription(ExifDirectory.TAG_WIN_AUTHOR));
        assertEquals("Testing comments", descriptor.getDescription(ExifDirectory.TAG_WIN_COMMENT));
        assertEquals("Testing keywords", descriptor.getDescription(ExifDirectory.TAG_WIN_KEYWORDS));
        assertEquals("Testing subject", descriptor.getDescription(ExifDirectory.TAG_WIN_SUBJECT));
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    }

    protected void setUp() throws Exception
    {
        File metadataFile = new File("src/com/drew/metadata/exif/test/nikonMakernoteType2a.metadata");
        Metadata metadata = new ExifReader(JpegSegmentData.FromFile(metadataFile)).extract();

        _nikonDirectory = (NikonType2MakernoteDirectory)metadata.getDirectory(NikonType2MakernoteDirectory.class);
        _descriptor = new NikonType2MakernoteDescriptor(_nikonDirectory);
    }
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        super(s);
    }

    public void testGetDirectoryName() throws Exception
    {
        Metadata metadata = new Metadata();
        Directory directory = metadata.getDirectory(ExifDirectory.class);
        assertEquals("Exif", directory.getName());
    }
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    }

    public void testGetThumbnailData() throws Exception
    {
        File file = new File("src/com/drew/metadata/exif/test/withExif.jpg");
        Metadata metadata = JpegMetadataReader.readMetadata(file);
        ExifDirectory exifDirectory = (ExifDirectory)metadata.getDirectory(ExifDirectory.class);
        assertTrue(exifDirectory.containsTag(ExifDirectory.TAG_THUMBNAIL_DATA));
        byte[] thumbData = exifDirectory.getThumbnailData();
        try {
            // attempt to read the thumbnail -- it should be a legal Jpeg file
            new JpegSegmentReader(thumbData);
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    }

    public void testWriteThumbnail() throws Exception
    {
        File file = new File("src/com/drew/metadata/exif/test/manuallyAddedThumbnail.jpg");
        Metadata metadata = JpegMetadataReader.readMetadata(file);
        ExifDirectory exifDirectory = (ExifDirectory)metadata.getDirectory(ExifDirectory.class);
        assertTrue(exifDirectory.containsTag(ExifDirectory.TAG_THUMBNAIL_DATA));

        File thumbnailFile = File.createTempFile("thumbnail", ".jpg");
        try {
            exifDirectory.writeThumbnail(thumbnailFile.getAbsolutePath());
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    }

    public void testLoadFujiFilmJpeg() throws Exception
    {
        String jpegWithExif = "src/com/drew/metadata/exif/test/withExif.jpg";
        Metadata metadata = new ExifReader(new File(jpegWithExif)).extract();
        Directory directory = metadata.getDirectory(ExifDirectory.class);
        assertEquals("80", directory.getDescription(ExifDirectory.TAG_ISO_EQUIVALENT));
        // TODO decide if this should still be returned -- it was being calculated upon setting of a related tag
//      assertEquals("F9", directory.getDescription(ExifDirectory.TAG_APERTURE));
    }
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    }

    public void testLoadJpegWithoutExifData() throws Exception
    {
        String jpegNoExif = "src/com/drew/metadata/exif/test/noExif.jpg";
        Metadata metadata = new ExifReader(new File(jpegNoExif)).extract();
        assertTrue(!metadata.containsDirectory(ExifDirectory.class));
    }
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    {
        // This test used to ensure an exception was thrown when loading a particular jpeg
        // The intention has since changed, and the API should only throw exceptions in completely
        // fatal situations.  Now, the Metadata object returned has no new tags.
        String jpegBadExif = "src/com/drew/metadata/exif/test/badExif.jpg"; // Exif data segment doesn't begin with 'Exif'
        Metadata metadata = new ExifReader(new File(jpegBadExif)).extract();
        assertEquals(0, metadata.getDirectory(ExifDirectory.class).getTagCount());
    }
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Related Classes of com.drew.metadata.Metadata

  • ch.entwine.weblounge.common.impl.content.image.ImageMetadataUtils
  • com.drew.imaging.bmp.BmpMetadataReader
  • com.drew.imaging.gif.GifMetadataReader
  • com.drew.imaging.ImageMetadataReader
  • com.drew.imaging.jpeg.JpegMetadataReader
  • com.drew.imaging.jpeg.JpegMetadataReaderTest
  • com.drew.imaging.jpeg.JpegSegmentReaderTest
  • com.drew.imaging.jpeg.test.JpegMetadataReaderTest
  • com.drew.imaging.png.PngMetadataReader
  • com.drew.imaging.psd.PsdMetadataReader
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