Example usage for org.apache.commons.imaging.formats.tiff TiffImageMetadata.Item getClass

Introduction

In this page you can find the example usage for org.apache.commons.imaging.formats.tiff TiffImageMetadata.Item getClass.

Prototype

@HotSpotIntrinsicCandidate
public final native Class<?> getClass();

Source Link

Document

Returns the runtime class of this Object .

Usage

From source file:MetadataExample.java

public static void metadataExample(final File file) throws ImageReadException, IOException {
    // get all metadata stored in EXIF format (ie. from JPEG or TIFF).
    IImageMetadata metadata = Imaging.getMetadata(file);
    // System.out.println(metadata);

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

        // Jpeg EXIF metadata is stored in a TIFF-based directory structure
        // and is identified with TIFF tags.
        // Here we look for the "x resolution" tag, but
        // we could just as easily search for any other tag.
        ///*from w ww .  j a v a2 s  . c om*/
        // see the TiffConstants file for a list of TIFF tags.

        System.out.println("file: " + file.getPath());

        // print out various interesting EXIF tags.
        {
            printTagValue(jpegMetadata, TiffTagConstants.TIFF_TAG_DATE_TIME);
            printTagValue(jpegMetadata, GpsTagConstants.GPS_TAG_GPS_LATITUDE_REF);
            printTagValue(jpegMetadata, GpsTagConstants.GPS_TAG_GPS_LATITUDE);
            printTagValue(jpegMetadata, GpsTagConstants.GPS_TAG_GPS_LONGITUDE_REF);
            printTagValue(jpegMetadata, GpsTagConstants.GPS_TAG_GPS_LONGITUDE);
            printTagValue(jpegMetadata, TiffTagConstants.TIFF_TAG_ORIENTATION);
        }
        printTagValue(jpegMetadata, ExifTagConstants.EXIF_TAG_DATE_TIME_ORIGINAL);
        printTagValue(jpegMetadata, ExifTagConstants.EXIF_TAG_DATE_TIME_DIGITIZED);
        printTagValue(jpegMetadata, ExifTagConstants.EXIF_TAG_ISO);
        printTagValue(jpegMetadata, ExifTagConstants.EXIF_TAG_SHUTTER_SPEED_VALUE);
        printTagValue(jpegMetadata, ExifTagConstants.EXIF_TAG_APERTURE_VALUE);
        printTagValue(jpegMetadata, ExifTagConstants.EXIF_TAG_BRIGHTNESS_VALUE);

        System.out.println();

        // simple interface to GPS data
        final TiffImageMetadata exifMetadata = jpegMetadata.getExif();
        if (null != exifMetadata) {
            final TiffImageMetadata.GPSInfo gpsInfo = exifMetadata.getGPS();
            if (null != gpsInfo) {
                final String gpsDescription = gpsInfo.toString();
                final double longitude = gpsInfo.getLongitudeAsDegreesEast();
                final double latitude = gpsInfo.getLatitudeAsDegreesNorth();

                System.out.println("    " + "GPS Description: " + gpsDescription);
                System.out.println("    " + "GPS Longitude (Degrees East): " + longitude);
                System.out.println("    " + "GPS Latitude (Degrees North): " + latitude);
            }
        }

        // more specific example of how to manually access GPS values
        final TiffField gpsLatitudeRefField = jpegMetadata
                .findEXIFValueWithExactMatch(GpsTagConstants.GPS_TAG_GPS_LATITUDE_REF);
        final TiffField gpsLatitudeField = jpegMetadata
                .findEXIFValueWithExactMatch(GpsTagConstants.GPS_TAG_GPS_LATITUDE);
        final TiffField gpsLongitudeRefField = jpegMetadata
                .findEXIFValueWithExactMatch(GpsTagConstants.GPS_TAG_GPS_LONGITUDE_REF);
        final TiffField gpsLongitudeField = jpegMetadata
                .findEXIFValueWithExactMatch(GpsTagConstants.GPS_TAG_GPS_LONGITUDE);
        if (gpsLatitudeRefField != null && gpsLatitudeField != null && gpsLongitudeRefField != null
                && gpsLongitudeField != null) {
            // all of these values are strings.
            final String gpsLatitudeRef = (String) gpsLatitudeRefField.getValue();
            final RationalNumber gpsLatitude[] = (RationalNumber[]) (gpsLatitudeField.getValue());
            final String gpsLongitudeRef = (String) gpsLongitudeRefField.getValue();
            final RationalNumber gpsLongitude[] = (RationalNumber[]) gpsLongitudeField.getValue();

            final RationalNumber gpsLatitudeDegrees = gpsLatitude[0];
            final RationalNumber gpsLatitudeMinutes = gpsLatitude[1];
            final RationalNumber gpsLatitudeSeconds = gpsLatitude[2];

            final RationalNumber gpsLongitudeDegrees = gpsLongitude[0];
            final RationalNumber gpsLongitudeMinutes = gpsLongitude[1];
            final RationalNumber gpsLongitudeSeconds = gpsLongitude[2];

            // This will format the gps info like so:
            //
            // gpsLatitude: 8 degrees, 40 minutes, 42.2 seconds S
            // gpsLongitude: 115 degrees, 26 minutes, 21.8 seconds E

            System.out.println("    " + "GPS Latitude: " + gpsLatitudeDegrees.toDisplayString() + " degrees, "
                    + gpsLatitudeMinutes.toDisplayString() + " minutes, " + gpsLatitudeSeconds.toDisplayString()
                    + " seconds " + gpsLatitudeRef);
            System.out.println("    " + "GPS Longitude: " + gpsLongitudeDegrees.toDisplayString() + " degrees, "
                    + gpsLongitudeMinutes.toDisplayString() + " minutes, "
                    + gpsLongitudeSeconds.toDisplayString() + " seconds " + gpsLongitudeRef);

        }

        System.out.println();

        final List<IImageMetadataItem> items = jpegMetadata.getItems();
        for (int i = 0; i < items.size(); i++) {
            final TiffImageMetadata.Item item = (Item) items.get(i);
            System.out.println("    " + "item: " + item + "::" + item.getClass());
        }

        System.out.println();
    }
}

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