Package com.drew.lang

Examples of com.drew.lang.Rational

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    }

    public void testXResolutionDescription() throws Exception
    {
        ExifDirectory directory = new ExifDirectory();
        directory.setRational(ExifDirectory.TAG_X_RESOLUTION, new Rational(72, 1));
        // 2 is for 'Inch'
        directory.setInt(ExifDirectory.TAG_RESOLUTION_UNIT, 2);
        ExifDescriptor descriptor = new ExifDescriptor(directory);
        assertEquals("72 dots per inch", descriptor.getDescription(ExifDirectory.TAG_X_RESOLUTION));
    }
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    }

    public void testYResolutionDescription() throws Exception
    {
        ExifDirectory directory = new ExifDirectory();
        directory.setRational(ExifDirectory.TAG_Y_RESOLUTION, new Rational(50, 1));
        // 3 is for 'cm'
        directory.setInt(ExifDirectory.TAG_RESOLUTION_UNIT, 3);
        ExifDescriptor descriptor = new ExifDescriptor(directory);
        assertEquals("50 dots per cm", descriptor.getDescription(ExifDirectory.TAG_Y_RESOLUTION));
    }
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    }

    public String getDigitalZoomDescription() throws MetadataException
    {
        if (!_directory.containsTag(NikonType1MakernoteDirectory.TAG_NIKON_TYPE1_DIGITAL_ZOOM)) return null;
        Rational value = _directory.getRational(NikonType1MakernoteDirectory.TAG_NIKON_TYPE1_DIGITAL_ZOOM);
        if (value.getNumerator() == 0) {
            return "No digital zoom";
        }
        return value.toSimpleString(true) + "x digital zoom";
    }
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    }

    public String getFocusDescription() throws MetadataException
    {
        if (!_directory.containsTag(NikonType1MakernoteDirectory.TAG_NIKON_TYPE1_FOCUS)) return null;
        Rational value = _directory.getRational(NikonType1MakernoteDirectory.TAG_NIKON_TYPE1_FOCUS);
        if (value.getNumerator() == 1 && value.getDenominator() == 0) {
            return "Infinite";
        }
        return value.toSimpleString(true);
    }
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    public void testXResolution() throws Exception
    {
        String fileName = "src/com/drew/metadata/exif/test/manuallyAddedThumbnail.jpg";
        Metadata metadata = new ExifReader(new File(fileName)).extract();
        Directory directory = metadata.getDirectory(ExifDirectory.class);
        Rational rational = directory.getRational(ExifDirectory.TAG_X_RESOLUTION);
        assertEquals(72, rational.getNumerator());
        assertEquals(1, rational.getDenominator());
    }
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    public void testYResolution() throws Exception
    {
        String fileName = "src/com/drew/metadata/exif/test/manuallyAddedThumbnail.jpg";
        Metadata metadata = new ExifReader(new File(fileName)).extract();
        Directory directory = metadata.getDirectory(ExifDirectory.class);
        Rational rational = directory.getRational(ExifDirectory.TAG_Y_RESOLUTION);
        assertEquals(72, rational.getNumerator());
        assertEquals(1, rational.getDenominator());
    }
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        assertEquals(72, _exifDirectory.getDouble(ExifDirectory.TAG_Y_RESOLUTION), 0.001);
        assertEquals(2, _exifDirectory.getInt(ExifDirectory.TAG_RESOLUTION_UNIT));
        assertEquals("E995v1.6", _exifDirectory.getString(ExifDirectory.TAG_SOFTWARE));
        assertEquals("2002:08:29 17:31:40", _exifDirectory.getString(ExifDirectory.TAG_DATETIME));
        assertEquals(1, _exifDirectory.getInt(ExifDirectory.TAG_YCBCR_POSITIONING));
        assertEquals(new Rational(2439024, 100000000), _exifDirectory.getRational(ExifDirectory.TAG_EXPOSURE_TIME));
        assertEquals(2.6, _exifDirectory.getDouble(ExifDirectory.TAG_FNUMBER), 0.001);
        assertEquals(2, _exifDirectory.getInt(ExifDirectory.TAG_EXPOSURE_PROGRAM));
        assertEquals(100, _exifDirectory.getInt(ExifDirectory.TAG_ISO_EQUIVALENT));
        assertEquals("48 50 49 48", _exifDirectory.getString(ExifDirectory.TAG_EXIF_VERSION));
        assertEquals("2002:08:29 17:31:40", _exifDirectory.getString(ExifDirectory.TAG_DATETIME_DIGITIZED));
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        assertEquals(300, _exifDirectory.getDouble(ExifDirectory.TAG_Y_RESOLUTION), 0.001);
        assertEquals(2, _exifDirectory.getInt(ExifDirectory.TAG_RESOLUTION_UNIT));
        assertEquals("v981-79", _exifDirectory.getString(ExifDirectory.TAG_SOFTWARE));
        assertEquals("2001:04:06 11:51:40", _exifDirectory.getString(ExifDirectory.TAG_DATETIME));
        assertEquals(2, _exifDirectory.getInt(ExifDirectory.TAG_YCBCR_POSITIONING));
        assertEquals(new Rational(1, 77), _exifDirectory.getRational(ExifDirectory.TAG_EXPOSURE_TIME));
        assertEquals(5.5, _exifDirectory.getDouble(ExifDirectory.TAG_FNUMBER), 0.001);
        assertEquals(2, _exifDirectory.getInt(ExifDirectory.TAG_EXPOSURE_PROGRAM));
        assertEquals(80, _exifDirectory.getInt(ExifDirectory.TAG_ISO_EQUIVALENT));
        assertEquals("48 50 49 48", _exifDirectory.getString(ExifDirectory.TAG_EXIF_VERSION));
        assertEquals("2001:04:06 11:51:40", _exifDirectory.getString(ExifDirectory.TAG_DATETIME_DIGITIZED));
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    }

    public String getFlashStrengthDescription() throws MetadataException
    {
        if (!_directory.containsTag(FujifilmMakernoteDirectory.TAG_FUJIFILM_FLASH_STRENGTH)) return null;
        Rational value = _directory.getRational(FujifilmMakernoteDirectory.TAG_FUJIFILM_FLASH_STRENGTH);
        return value.toSimpleString(false) + " EV (Apex)";
    }
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    }

    public String getDigitalZoomRatioDescription() throws MetadataException
    {
        if (!_directory.containsTag(ExifDirectory.TAG_DIGITAL_ZOOM_RATIO)) return null;
        Rational rational = _directory.getRational(ExifDirectory.TAG_DIGITAL_ZOOM_RATIO);
        if (rational.getNumerator()==0)
            return "Digital zoom not used.";

        return SimpleDecimalFormatter.format(rational.doubleValue());
    }
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Related Classes of com.drew.lang.Rational

  • com.drew.imaging.tiff.TiffReader
  • com.drew.lang.test.RationalTest
  • com.drew.metadata.Directory
  • com.drew.metadata.DirectoryTest
  • com.drew.metadata.exif.ExifDescriptor
  • com.drew.metadata.exif.ExifIFD0Descriptor
  • com.drew.metadata.exif.ExifIFD0DescriptorTest
  • com.drew.metadata.exif.ExifReader
  • com.drew.metadata.exif.ExifReaderTest
  • com.drew.metadata.exif.ExifSubIFDDescriptor
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