Package com.drew.lang

Examples of com.drew.lang.Rational

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        Assert.assertEquals(2, _exifIFD0Directory.getInt(ExifIFD0Directory.TAG_RESOLUTION_UNIT));
        Assert.assertEquals("E995v1.6", _exifIFD0Directory.getString(ExifIFD0Directory.TAG_SOFTWARE));
        Assert.assertEquals("2002:08:29 17:31:40", _exifIFD0Directory.getString(ExifIFD0Directory.TAG_DATETIME));
        Assert.assertEquals(1, _exifIFD0Directory.getInt(ExifIFD0Directory.TAG_YCBCR_POSITIONING));
       
        Assert.assertEquals(new Rational(2439024, 100000000), _exifSubIFDDirectory.getRational(ExifSubIFDDirectory.TAG_EXPOSURE_TIME));
        Assert.assertEquals(2.6, _exifSubIFDDirectory.getDouble(ExifSubIFDDirectory.TAG_FNUMBER), 0.001);
        Assert.assertEquals(2, _exifSubIFDDirectory.getInt(ExifSubIFDDirectory.TAG_EXPOSURE_PROGRAM));
        Assert.assertEquals(100, _exifSubIFDDirectory.getInt(ExifSubIFDDirectory.TAG_ISO_EQUIVALENT));
        Assert.assertEquals("48 50 49 48", _exifSubIFDDirectory.getString(ExifSubIFDDirectory.TAG_EXIF_VERSION));
        Assert.assertEquals("2002:08:29 17:31:40", _exifSubIFDDirectory.getString(ExifSubIFDDirectory.TAG_DATETIME_DIGITIZED));
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        Assert.assertEquals(2, _exifIFD0Directory.getInt(ExifIFD0Directory.TAG_RESOLUTION_UNIT));
        Assert.assertEquals("v981-79", _exifIFD0Directory.getString(ExifIFD0Directory.TAG_SOFTWARE));
        Assert.assertEquals("2001:04:06 11:51:40", _exifIFD0Directory.getString(ExifIFD0Directory.TAG_DATETIME));
        Assert.assertEquals(2, _exifIFD0Directory.getInt(ExifIFD0Directory.TAG_YCBCR_POSITIONING));

        Assert.assertEquals(new Rational(1, 77), _exifSubIFDDirectory.getRational(ExifSubIFDDirectory.TAG_EXPOSURE_TIME));
        Assert.assertEquals(5.5, _exifSubIFDDirectory.getDouble(ExifSubIFDDirectory.TAG_FNUMBER), 0.001);
        Assert.assertEquals(2, _exifSubIFDDirectory.getInt(ExifSubIFDDirectory.TAG_EXPOSURE_PROGRAM));
        Assert.assertEquals(80, _exifSubIFDDirectory.getInt(ExifSubIFDDirectory.TAG_ISO_EQUIVALENT));
        Assert.assertEquals("48 50 49 48", _exifSubIFDDirectory.getString(ExifSubIFDDirectory.TAG_EXIF_VERSION));
        Assert.assertEquals("2001:04:06 11:51:40", _exifSubIFDDirectory.getString(ExifSubIFDDirectory.TAG_DATETIME_DIGITIZED));
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{
    @Test
    public void testXResolutionDescription() throws Exception
    {
        ExifIFD0Directory directory = new ExifIFD0Directory();
        directory.setRational(ExifIFD0Directory.TAG_X_RESOLUTION, new Rational(72, 1));
        // 2 is for 'Inch'
        directory.setInt(ExifIFD0Directory.TAG_RESOLUTION_UNIT, 2);
        ExifIFD0Descriptor descriptor = new ExifIFD0Descriptor(directory);
        Assert.assertEquals("72 dots per inch", descriptor.getDescription(ExifIFD0Directory.TAG_X_RESOLUTION));
    }
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    @Test
    public void testYResolutionDescription() throws Exception
    {
        ExifIFD0Directory directory = new ExifIFD0Directory();
        directory.setRational(ExifIFD0Directory.TAG_Y_RESOLUTION, new Rational(50, 1));
        // 3 is for 'cm'
        directory.setInt(ExifIFD0Directory.TAG_RESOLUTION_UNIT, 3);
        ExifIFD0Descriptor descriptor = new ExifIFD0Descriptor(directory);
        Assert.assertEquals("50 dots per cm", descriptor.getDescription(ExifIFD0Directory.TAG_Y_RESOLUTION));
    }
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    }

    @Test
    public void testExtract_FNumber() throws Exception
    {
        Assert.assertEquals(new Rational(11, 1), _directory.getRational(XmpDirectory.TAG_F_NUMBER));
    }
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    }

    @Test
    public void testExtract_FocalLength() throws Exception
    {
        Assert.assertEquals(new Rational(57, 1), _directory.getRational(XmpDirectory.TAG_FOCAL_LENGTH));
    }
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    }

    @Test
    public void testExtract_ShutterSpeed() throws Exception
    {
        Assert.assertEquals(new Rational(6965784, 1000000), _directory.getRational(XmpDirectory.TAG_SHUTTER_SPEED));
    }
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        return "ISO " + values[1];
    }

    public String getAutoFlashCompensationDescription() throws MetadataException
    {
        Rational ev = getMakernoteDirectory().getAutoFlashCompensation();

        if (ev==null)
            return "Unknown";

        DecimalFormat decimalFormat = new DecimalFormat("0.##");
        return decimalFormat.format(ev.floatValue()) + " EV";
    }
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                directory.setString(tagType, readString(tagValueOffset, componentCount));
                break;
            case FMT_SRATIONAL:
            case FMT_URATIONAL:
                if (componentCount==1) {
                    Rational rational = new Rational(get32Bits(tagValueOffset), get32Bits(tagValueOffset + 4));
                    directory.setRational(tagType, rational);
                } else {
                    Rational[] rationals = new Rational[componentCount];
                    for (int i = 0; i<componentCount; i++)
                        rationals[i] = new Rational(get32Bits(tagValueOffset + (8 * i)), get32Bits(tagValueOffset + 4 + (8 * i)));
                    directory.setRationalArray(tagType, rationals);
                }
                break;
            case FMT_SBYTE:
            case FMT_BYTE:
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    {
        if (bytes.length==3)
        {
            byte denominator = bytes[2];
            int numerator = (int)bytes[0] * bytes[1];
            return new Rational(numerator, denominator);
        }
        return null;
    }
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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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