| 0,0 → 1,201 |
|---|
| /* |
| * This is public domain software - that is, you can do whatever you want |
| * with it, and include it software that is licensed under the GNU or the |
| * BSD license, or whatever other licence you choose, including proprietary |
| * closed source licenses. I do ask that you leave this header in tact. |
| * |
| * If you make modifications to this code that you think would benefit the |
| * wider community, please send me a copy and I'll post it on my site. |
| * |
| * If you make use of this code, I'd appreciate hearing about it. |
| * drew@drewnoakes.com |
| * Latest version of this software kept at |
| * http://drewnoakes.com/ |
| * |
| * Created by dnoakes on 12-Nov-2002 22:27:52 using IntelliJ IDEA. |
| */ |
| package com.drew.metadata.exif; |
| |
| import com.drew.lang.Rational; |
| import com.drew.metadata.Directory; |
| import com.drew.metadata.MetadataException; |
| import com.drew.metadata.TagDescriptor; |
| |
| /** |
| * |
| */ |
| public class GpsDescriptor extends TagDescriptor |
| { |
| public GpsDescriptor(Directory directory) |
| { |
| super(directory); |
| } |
| |
| public String getDescription(int tagType) throws MetadataException |
| { |
| switch (tagType) { |
| case GpsDirectory.TAG_GPS_ALTITUDE: |
| return getGpsAltitudeDescription(); |
| case GpsDirectory.TAG_GPS_ALTITUDE_REF: |
| return getGpsAltitudeRefDescription(); |
| case GpsDirectory.TAG_GPS_STATUS: |
| return getGpsStatusDescription(); |
| case GpsDirectory.TAG_GPS_MEASURE_MODE: |
| return getGpsMeasureModeDescription(); |
| case GpsDirectory.TAG_GPS_SPEED_REF: |
| return getGpsSpeedRefDescription(); |
| case GpsDirectory.TAG_GPS_TRACK_REF: |
| case GpsDirectory.TAG_GPS_IMG_DIRECTION_REF: |
| case GpsDirectory.TAG_GPS_DEST_BEARING_REF: |
| return getGpsDirectionReferenceDescription(tagType); |
| case GpsDirectory.TAG_GPS_TRACK: |
| case GpsDirectory.TAG_GPS_IMG_DIRECTION: |
| case GpsDirectory.TAG_GPS_DEST_BEARING: |
| return getGpsDirectionDescription(tagType); |
| case GpsDirectory.TAG_GPS_DEST_DISTANCE_REF: |
| return getGpsDestinationReferenceDescription(); |
| case GpsDirectory.TAG_GPS_TIME_STAMP: |
| return getGpsTimeStampDescription(); |
| // three rational numbers -- displayed in HH"MM"SS.ss |
| case GpsDirectory.TAG_GPS_LONGITUDE: |
| return getGpsLongitudeDescription(); |
| case GpsDirectory.TAG_GPS_LATITUDE: |
| return getGpsLatitudeDescription(); |
| default: |
| return _directory.getString(tagType); |
| } |
| } |
| |
| public String getGpsLatitudeDescription() throws MetadataException |
| { |
| if (!_directory.containsTag(GpsDirectory.TAG_GPS_LATITUDE)) return null; |
| return getHoursMinutesSecondsDescription(GpsDirectory.TAG_GPS_LATITUDE); |
| } |
| |
| public String getGpsLongitudeDescription() throws MetadataException |
| { |
| if (!_directory.containsTag(GpsDirectory.TAG_GPS_LONGITUDE)) return null; |
| return getHoursMinutesSecondsDescription(GpsDirectory.TAG_GPS_LONGITUDE); |
| } |
| |
| public String getHoursMinutesSecondsDescription(int tagType) throws MetadataException |
| { |
| Rational[] components = _directory.getRationalArray(tagType); |
| // TODO create an HoursMinutesSecods class ?? |
| int deg = components[0].intValue(); |
| float min = components[1].floatValue(); |
| float sec = components[2].floatValue(); |
| // carry fractions of minutes into seconds -- thanks Colin Briton |
| sec += (min % 1) * 60; |
| return String.valueOf(deg) + "\"" + String.valueOf((int)min) + "'" + String.valueOf(sec); |
| } |
| |
| public String getGpsTimeStampDescription() throws MetadataException |
| { |
| // time in hour, min, sec |
| if (!_directory.containsTag(GpsDirectory.TAG_GPS_TIME_STAMP)) return null; |
| int[] timeComponents = _directory.getIntArray(GpsDirectory.TAG_GPS_TIME_STAMP); |
| StringBuffer sbuffer = new StringBuffer(); |
| sbuffer.append(timeComponents[0]); |
| sbuffer.append(":"); |
| sbuffer.append(timeComponents[1]); |
| sbuffer.append(":"); |
| sbuffer.append(timeComponents[2]); |
| sbuffer.append(" UTC"); |
| return sbuffer.toString(); |
| } |
| |
| public String getGpsDestinationReferenceDescription() |
| { |
| if (!_directory.containsTag(GpsDirectory.TAG_GPS_DEST_DISTANCE_REF)) return null; |
| String destRef = _directory.getString(GpsDirectory.TAG_GPS_DEST_DISTANCE_REF).trim(); |
| if ("K".equalsIgnoreCase(destRef)) { |
| return "kilometers"; |
| } else if ("M".equalsIgnoreCase(destRef)) { |
| return "miles"; |
| } else if ("N".equalsIgnoreCase(destRef)) { |
| return "knots"; |
| } else { |
| return "Unknown (" + destRef + ")"; |
| } |
| } |
| |
| public String getGpsDirectionDescription(int tagType) |
| { |
| if (!_directory.containsTag(tagType)) return null; |
| String gpsDirection = _directory.getString(tagType).trim(); |
| return gpsDirection + " degrees"; |
| } |
| |
| public String getGpsDirectionReferenceDescription(int tagType) |
| { |
| if (!_directory.containsTag(tagType)) return null; |
| String gpsDistRef = _directory.getString(tagType).trim(); |
| if ("T".equalsIgnoreCase(gpsDistRef)) { |
| return "True direction"; |
| } else if ("M".equalsIgnoreCase(gpsDistRef)) { |
| return "Magnetic direction"; |
| } else { |
| return "Unknown (" + gpsDistRef + ")"; |
| } |
| } |
| |
| public String getGpsSpeedRefDescription() |
| { |
| if (!_directory.containsTag(GpsDirectory.TAG_GPS_SPEED_REF)) return null; |
| String gpsSpeedRef = _directory.getString(GpsDirectory.TAG_GPS_SPEED_REF).trim(); |
| if ("K".equalsIgnoreCase(gpsSpeedRef)) { |
| return "kph"; |
| } else if ("M".equalsIgnoreCase(gpsSpeedRef)) { |
| return "mph"; |
| } else if ("N".equalsIgnoreCase(gpsSpeedRef)) { |
| return "knots"; |
| } else { |
| return "Unknown (" + gpsSpeedRef + ")"; |
| } |
| } |
| |
| public String getGpsMeasureModeDescription() |
| { |
| if (!_directory.containsTag(GpsDirectory.TAG_GPS_MEASURE_MODE)) return null; |
| String gpsSpeedMeasureMode = _directory.getString(GpsDirectory.TAG_GPS_MEASURE_MODE).trim(); |
| if ("2".equalsIgnoreCase(gpsSpeedMeasureMode)) { |
| return "2-dimensional measurement"; |
| } else if ("3".equalsIgnoreCase(gpsSpeedMeasureMode)) { |
| return "3-dimensional measurement"; |
| } else { |
| return "Unknown (" + gpsSpeedMeasureMode + ")"; |
| } |
| } |
| |
| public String getGpsStatusDescription() |
| { |
| if (!_directory.containsTag(GpsDirectory.TAG_GPS_STATUS)) return null; |
| String gpsStatus = _directory.getString(GpsDirectory.TAG_GPS_STATUS).trim(); |
| if ("A".equalsIgnoreCase(gpsStatus)) { |
| return "Measurement in progess"; |
| } else if ("V".equalsIgnoreCase(gpsStatus)) { |
| return "Measurement Interoperability"; |
| } else { |
| return "Unknown (" + gpsStatus + ")"; |
| } |
| } |
| |
| public String getGpsAltitudeRefDescription() throws MetadataException |
| { |
| if (!_directory.containsTag(GpsDirectory.TAG_GPS_ALTITUDE_REF)) return null; |
| int alititudeRef = _directory.getInt(GpsDirectory.TAG_GPS_ALTITUDE_REF); |
| if (alititudeRef == 0) { |
| return "Sea level"; |
| } else { |
| return "Unknown (" + alititudeRef + ")"; |
| } |
| } |
| |
| public String getGpsAltitudeDescription() throws MetadataException |
| { |
| if (!_directory.containsTag(GpsDirectory.TAG_GPS_ALTITUDE)) return null; |
| String alititude = _directory.getRational(GpsDirectory.TAG_GPS_ALTITUDE).toSimpleString(true); |
| return alititude + " metres"; |
| } |
| } |