1 | // License: GPL. For details, see LICENSE file.
|
---|
2 | package org.openstreetmap.josm.tools;
|
---|
3 |
|
---|
4 | import java.io.File;
|
---|
5 | import java.io.IOException;
|
---|
6 | import java.text.ParseException;
|
---|
7 | import java.util.Date;
|
---|
8 |
|
---|
9 | import org.openstreetmap.josm.Main;
|
---|
10 | import org.openstreetmap.josm.data.coor.LatLon;
|
---|
11 |
|
---|
12 | import com.drew.imaging.jpeg.JpegMetadataReader;
|
---|
13 | import com.drew.imaging.jpeg.JpegProcessingException;
|
---|
14 | import com.drew.lang.Rational;
|
---|
15 | import com.drew.metadata.Directory;
|
---|
16 | import com.drew.metadata.Metadata;
|
---|
17 | import com.drew.metadata.MetadataException;
|
---|
18 | import com.drew.metadata.Tag;
|
---|
19 | import com.drew.metadata.exif.ExifIFD0Directory;
|
---|
20 | import com.drew.metadata.exif.ExifSubIFDDirectory;
|
---|
21 | import com.drew.metadata.exif.GpsDirectory;
|
---|
22 |
|
---|
23 | /**
|
---|
24 | * Read out EXIF information from a JPEG file
|
---|
25 | * @author Imi
|
---|
26 | * @since 99
|
---|
27 | */
|
---|
28 | public final class ExifReader {
|
---|
29 |
|
---|
30 | private ExifReader() {
|
---|
31 | // Hide default constructor for utils classes
|
---|
32 | }
|
---|
33 |
|
---|
34 | /**
|
---|
35 | * Returns the date/time from the given JPEG file.
|
---|
36 | * @param filename The JPEG file to read
|
---|
37 | * @return The date/time read in the EXIF section, or {@code null} if not found
|
---|
38 | * @throws ParseException if {@link DateParser#parse} fails to parse date/time
|
---|
39 | */
|
---|
40 | public static Date readTime(File filename) throws ParseException {
|
---|
41 | try {
|
---|
42 | Metadata metadata = JpegMetadataReader.readMetadata(filename);
|
---|
43 | String dateStr = null;
|
---|
44 | OUTER:
|
---|
45 | for (Directory dirIt : metadata.getDirectories()) {
|
---|
46 | for (Tag tag : dirIt.getTags()) {
|
---|
47 | if (tag.getTagType() == ExifSubIFDDirectory.TAG_DATETIME_ORIGINAL /* 0x9003 */) {
|
---|
48 | dateStr = tag.getDescription();
|
---|
49 | break OUTER; // prefer this tag
|
---|
50 | }
|
---|
51 | if (tag.getTagType() == ExifIFD0Directory.TAG_DATETIME /* 0x0132 */ ||
|
---|
52 | tag.getTagType() == ExifSubIFDDirectory.TAG_DATETIME_DIGITIZED /* 0x9004 */) {
|
---|
53 | dateStr = tag.getDescription();
|
---|
54 | }
|
---|
55 | }
|
---|
56 | }
|
---|
57 | if (dateStr != null) {
|
---|
58 | dateStr = dateStr.replace('/', ':'); // workaround for HTC Sensation bug, see #7228
|
---|
59 | return DateParser.parse(dateStr);
|
---|
60 | }
|
---|
61 | } catch (ParseException e) {
|
---|
62 | throw e;
|
---|
63 | } catch (Exception e) {
|
---|
64 | Main.error(e);
|
---|
65 | }
|
---|
66 | return null;
|
---|
67 | }
|
---|
68 |
|
---|
69 | /**
|
---|
70 | * Returns the image orientation of the given JPEG file.
|
---|
71 | * @param filename The JPEG file to read
|
---|
72 | * @return The image orientation as an {@code int}. Default value is 1. Possible values are listed in EXIF spec as follows:<br>
|
---|
73 | * <ul>1. The 0th row is at the visual top of the image, and the 0th column is the visual left-hand side.</ul>
|
---|
74 | * <ul>2. The 0th row is at the visual top of the image, and the 0th column is the visual right-hand side.</ul>
|
---|
75 | * <ul>3. The 0th row is at the visual bottom of the image, and the 0th column is the visual right-hand side.</ul>
|
---|
76 | * <ul>4. The 0th row is at the visual bottom of the image, and the 0th column is the visual left-hand side.</ul>
|
---|
77 | * <ul>5. The 0th row is the visual left-hand side of the image, and the 0th column is the visual top.</ul>
|
---|
78 | * <ul>6. The 0th row is the visual right-hand side of the image, and the 0th column is the visual top.</ul>
|
---|
79 | * <ul>7. The 0th row is the visual right-hand side of the image, and the 0th column is the visual bottom.</ul>
|
---|
80 | * <ul>8. The 0th row is the visual left-hand side of the image, and the 0th column is the visual bottom.</ul>
|
---|
81 | * @see <a href="http://www.impulseadventure.com/photo/exif-orientation.html">http://www.impulseadventure.com/photo/exif-orientation.html</a>
|
---|
82 | * @see <a href="http://www.daveperrett.com/articles/2012/07/28/exif-orientation-handling-is-a-ghetto">http://www.daveperrett.com/articles/2012/07/28/exif-orientation-handling-is-a-ghetto</a>
|
---|
83 | */
|
---|
84 | public static Integer readOrientation(File filename) {
|
---|
85 | try {
|
---|
86 | final Metadata metadata = JpegMetadataReader.readMetadata(filename);
|
---|
87 | final Directory dir = metadata.getDirectory(ExifIFD0Directory.class);
|
---|
88 | return dir.getInt(ExifIFD0Directory.TAG_ORIENTATION);
|
---|
89 | } catch (JpegProcessingException e) {
|
---|
90 | Main.error(e);
|
---|
91 | } catch (MetadataException e) {
|
---|
92 | Main.error(e);
|
---|
93 | } catch (IOException e) {
|
---|
94 | Main.error(e);
|
---|
95 | }
|
---|
96 | return null;
|
---|
97 | }
|
---|
98 |
|
---|
99 | /**
|
---|
100 | * Returns the geolocation of the given JPEG file.
|
---|
101 | * @param filename The JPEG file to read
|
---|
102 | * @return The lat/lon read in the EXIF section, or {@code null} if not found
|
---|
103 | * @since 6209
|
---|
104 | */
|
---|
105 | public static LatLon readLatLon(File filename) {
|
---|
106 | try {
|
---|
107 | final Metadata metadata = JpegMetadataReader.readMetadata(filename);
|
---|
108 | final GpsDirectory dirGps = metadata.getDirectory(GpsDirectory.class);
|
---|
109 | return readLatLon(dirGps);
|
---|
110 | } catch (JpegProcessingException e) {
|
---|
111 | Main.error(e);
|
---|
112 | } catch (IOException e) {
|
---|
113 | Main.error(e);
|
---|
114 | } catch (MetadataException e) {
|
---|
115 | Main.error(e);
|
---|
116 | }
|
---|
117 | return null;
|
---|
118 | }
|
---|
119 |
|
---|
120 | /**
|
---|
121 | * Returns the geolocation of the given EXIF GPS directory.
|
---|
122 | * @param dirGps The EXIF GPS directory
|
---|
123 | * @return The lat/lon read in the EXIF section, or {@code null} if {@code dirGps} is null
|
---|
124 | * @throws MetadataException
|
---|
125 | * @since 6209
|
---|
126 | */
|
---|
127 | public static LatLon readLatLon(GpsDirectory dirGps) throws MetadataException {
|
---|
128 | if (dirGps != null) {
|
---|
129 | double lat = readAxis(dirGps, GpsDirectory.TAG_GPS_LATITUDE, GpsDirectory.TAG_GPS_LATITUDE_REF, 'S');
|
---|
130 | double lon = readAxis(dirGps, GpsDirectory.TAG_GPS_LONGITUDE, GpsDirectory.TAG_GPS_LONGITUDE_REF, 'W');
|
---|
131 | return new LatLon(lat, lon);
|
---|
132 | }
|
---|
133 | return null;
|
---|
134 | }
|
---|
135 |
|
---|
136 | /**
|
---|
137 | * Returns the direction of the given JPEG file.
|
---|
138 | * @param filename The JPEG file to read
|
---|
139 | * @return The direction of the image when it was captures (in degrees between 0.0 and 359.99), or {@code null} if missing or if {@code dirGps} is null
|
---|
140 | * @since 6209
|
---|
141 | */
|
---|
142 | public static Double readDirection(File filename) {
|
---|
143 | try {
|
---|
144 | final Metadata metadata = JpegMetadataReader.readMetadata(filename);
|
---|
145 | final GpsDirectory dirGps = metadata.getDirectory(GpsDirectory.class);
|
---|
146 | return readDirection(dirGps);
|
---|
147 | } catch (JpegProcessingException e) {
|
---|
148 | Main.error(e);
|
---|
149 | } catch (IOException e) {
|
---|
150 | Main.error(e);
|
---|
151 | }
|
---|
152 | return null;
|
---|
153 | }
|
---|
154 |
|
---|
155 | /**
|
---|
156 | * Returns the direction of the given EXIF GPS directory.
|
---|
157 | * @param dirGps The EXIF GPS directory
|
---|
158 | * @return The direction of the image when it was captures (in degrees between 0.0 and 359.99), or {@code null} if missing or if {@code dirGps} is null
|
---|
159 | * @since 6209
|
---|
160 | */
|
---|
161 | public static Double readDirection(GpsDirectory dirGps) {
|
---|
162 | if (dirGps != null) {
|
---|
163 | Rational direction = dirGps.getRational(GpsDirectory.TAG_GPS_IMG_DIRECTION);
|
---|
164 | if (direction != null) {
|
---|
165 | return direction.doubleValue();
|
---|
166 | }
|
---|
167 | }
|
---|
168 | return null;
|
---|
169 | }
|
---|
170 |
|
---|
171 | private static double readAxis(GpsDirectory dirGps, int gpsTag, int gpsTagRef, char cRef) throws MetadataException {
|
---|
172 | double value;
|
---|
173 | Rational[] components = dirGps.getRationalArray(gpsTag);
|
---|
174 | if (components != null) {
|
---|
175 | double deg = components[0].doubleValue();
|
---|
176 | double min = components[1].doubleValue();
|
---|
177 | double sec = components[2].doubleValue();
|
---|
178 |
|
---|
179 | if (Double.isNaN(deg) && Double.isNaN(min) && Double.isNaN(sec))
|
---|
180 | throw new IllegalArgumentException();
|
---|
181 |
|
---|
182 | value = (Double.isNaN(deg) ? 0 : deg + (Double.isNaN(min) ? 0 : (min / 60)) + (Double.isNaN(sec) ? 0 : (sec / 3600)));
|
---|
183 |
|
---|
184 | if (dirGps.getString(gpsTagRef).charAt(0) == cRef) {
|
---|
185 | value = -value;
|
---|
186 | }
|
---|
187 | } else {
|
---|
188 | // Try to read lon/lat as double value (Nonstandard, created by some cameras -> #5220)
|
---|
189 | value = dirGps.getDouble(gpsTag);
|
---|
190 | }
|
---|
191 | return value;
|
---|
192 | }
|
---|
193 | }
|
---|