1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.layer.geoimage;
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3 |
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4 | import java.awt.Image;
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5 | import java.io.File;
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6 | import java.io.IOException;
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7 | import java.text.ParseException;
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8 | import java.util.Calendar;
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9 | import java.util.Collections;
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10 | import java.util.Date;
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11 | import java.util.GregorianCalendar;
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12 | import java.util.TimeZone;
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13 |
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14 | import org.openstreetmap.josm.Main;
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15 | import org.openstreetmap.josm.data.SystemOfMeasurement;
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16 | import org.openstreetmap.josm.data.coor.CachedLatLon;
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17 | import org.openstreetmap.josm.data.coor.LatLon;
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18 | import org.openstreetmap.josm.tools.ExifReader;
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19 |
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20 | import com.drew.imaging.jpeg.JpegMetadataReader;
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21 | import com.drew.lang.CompoundException;
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22 | import com.drew.metadata.Directory;
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23 | import com.drew.metadata.Metadata;
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24 | import com.drew.metadata.MetadataException;
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25 | import com.drew.metadata.exif.ExifIFD0Directory;
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26 | import com.drew.metadata.exif.GpsDirectory;
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27 |
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28 | /**
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29 | * Stores info about each image
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30 | */
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31 | public final class ImageEntry implements Comparable<ImageEntry>, Cloneable {
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32 | private File file;
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33 | private Integer exifOrientation;
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34 | private LatLon exifCoor;
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35 | private Double exifImgDir;
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36 | private Date exifTime;
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37 | /**
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38 | * Flag isNewGpsData indicates that the GPS data of the image is new or has changed.
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39 | * GPS data includes the position, speed, elevation, time (e.g. as extracted from the GPS track).
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40 | * The flag can used to decide for which image file the EXIF GPS data is (re-)written.
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41 | */
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42 | private boolean isNewGpsData;
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43 | /** Temporary source of GPS time if not correlated with GPX track. */
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44 | private Date exifGpsTime;
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45 | private Image thumbnail;
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46 |
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47 | /**
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48 | * The following values are computed from the correlation with the gpx track
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49 | * or extracted from the image EXIF data.
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50 | */
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51 | private CachedLatLon pos;
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52 | /** Speed in kilometer per hour */
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53 | private Double speed;
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54 | /** Elevation (altitude) in meters */
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55 | private Double elevation;
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56 | /** The time after correlation with a gpx track */
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57 | private Date gpsTime;
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58 |
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59 | /**
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60 | * When the correlation dialog is open, we like to show the image position
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61 | * for the current time offset on the map in real time.
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62 | * On the other hand, when the user aborts this operation, the old values
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63 | * should be restored. We have a temporary copy, that overrides
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64 | * the normal values if it is not null. (This may be not the most elegant
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65 | * solution for this, but it works.)
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66 | */
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67 | ImageEntry tmp;
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68 |
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69 | /**
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70 | * Constructs a new {@code ImageEntry}.
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71 | */
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72 | public ImageEntry() {}
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73 |
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74 | /**
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75 | * Constructs a new {@code ImageEntry}.
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76 | * @param file Path to image file on disk
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77 | */
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78 | public ImageEntry(File file) {
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79 | setFile(file);
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80 | }
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81 |
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82 | /**
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83 | * Returns the position value. The position value from the temporary copy
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84 | * is returned if that copy exists.
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85 | * @return the position value
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86 | */
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87 | public CachedLatLon getPos() {
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88 | if (tmp != null)
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89 | return tmp.pos;
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90 | return pos;
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91 | }
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92 |
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93 | /**
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94 | * Returns the speed value. The speed value from the temporary copy is
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95 | * returned if that copy exists.
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96 | * @return the speed value
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97 | */
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98 | public Double getSpeed() {
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99 | if (tmp != null)
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100 | return tmp.speed;
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101 | return speed;
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102 | }
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103 |
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104 | /**
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105 | * Returns the elevation value. The elevation value from the temporary
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106 | * copy is returned if that copy exists.
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107 | * @return the elevation value
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108 | */
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109 | public Double getElevation() {
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110 | if (tmp != null)
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111 | return tmp.elevation;
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112 | return elevation;
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113 | }
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114 |
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115 | /**
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116 | * Returns the GPS time value. The GPS time value from the temporary copy
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117 | * is returned if that copy exists.
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118 | * @return the GPS time value
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119 | */
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120 | public Date getGpsTime() {
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121 | if (tmp != null)
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122 | return getDefensiveDate(tmp.gpsTime);
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123 | return getDefensiveDate(gpsTime);
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124 | }
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125 |
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126 | /**
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127 | * Convenient way to determine if this entry has a GPS time, without the cost of building a defensive copy.
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128 | * @return {@code true} if this entry has a GPS time
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129 | * @since 6450
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130 | */
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131 | public boolean hasGpsTime() {
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132 | return (tmp != null && tmp.gpsTime != null) || gpsTime != null;
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133 | }
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134 |
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135 | /**
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136 | * Returns associated file.
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137 | * @return associated file
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138 | */
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139 | public File getFile() {
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140 | return file;
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141 | }
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142 |
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143 | /**
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144 | * Returns EXIF orientation
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145 | * @return EXIF orientation
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146 | */
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147 | public Integer getExifOrientation() {
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148 | return exifOrientation;
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149 | }
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150 |
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151 | /**
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152 | * Returns EXIF time
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153 | * @return EXIF time
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154 | */
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155 | public Date getExifTime() {
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156 | return getDefensiveDate(exifTime);
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157 | }
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158 |
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159 | /**
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160 | * Convenient way to determine if this entry has a EXIF time, without the cost of building a defensive copy.
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161 | * @return {@code true} if this entry has a EXIF time
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162 | * @since 6450
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163 | */
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164 | public boolean hasExifTime() {
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165 | return exifTime != null;
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166 | }
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167 |
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168 | /**
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169 | * Returns the EXIF GPS time.
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170 | * @return the EXIF GPS time
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171 | * @since 6392
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172 | */
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173 | public Date getExifGpsTime() {
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174 | return getDefensiveDate(exifGpsTime);
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175 | }
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176 |
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177 | /**
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178 | * Convenient way to determine if this entry has a EXIF GPS time, without the cost of building a defensive copy.
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179 | * @return {@code true} if this entry has a EXIF GPS time
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180 | * @since 6450
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181 | */
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182 | public boolean hasExifGpsTime() {
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183 | return exifGpsTime != null;
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184 | }
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185 |
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186 | private static Date getDefensiveDate(Date date) {
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187 | if (date == null)
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188 | return null;
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189 | return new Date(date.getTime());
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190 | }
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191 |
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192 | public LatLon getExifCoor() {
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193 | return exifCoor;
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194 | }
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195 |
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196 | public Double getExifImgDir() {
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197 | if (tmp != null)
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198 | return tmp.exifImgDir;
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199 | return exifImgDir;
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200 | }
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201 |
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202 | /**
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203 | * Determines whether a thumbnail is set
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204 | * @return {@code true} if a thumbnail is set
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205 | */
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206 | public boolean hasThumbnail() {
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207 | return thumbnail != null;
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208 | }
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209 |
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210 | /**
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211 | * Returns the thumbnail.
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212 | * @return the thumbnail
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213 | */
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214 | public Image getThumbnail() {
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215 | return thumbnail;
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216 | }
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217 |
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218 | /**
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219 | * Sets the thumbnail.
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220 | * @param thumbnail thumbnail
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221 | */
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222 | public void setThumbnail(Image thumbnail) {
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223 | this.thumbnail = thumbnail;
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224 | }
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225 |
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226 | /**
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227 | * Loads the thumbnail if it was not loaded yet.
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228 | * @see ThumbsLoader
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229 | */
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230 | public void loadThumbnail() {
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231 | if (thumbnail == null) {
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232 | new ThumbsLoader(Collections.singleton(this)).run();
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233 | }
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234 | }
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235 |
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236 | /**
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237 | * Sets the position.
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238 | * @param pos cached position
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239 | */
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240 | public void setPos(CachedLatLon pos) {
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241 | this.pos = pos;
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242 | }
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243 |
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244 | /**
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245 | * Sets the position.
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246 | * @param pos position (will be cached)
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247 | */
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248 | public void setPos(LatLon pos) {
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249 | setPos(pos != null ? new CachedLatLon(pos) : null);
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250 | }
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251 |
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252 | /**
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253 | * Sets the speed.
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254 | * @param speed speed
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255 | */
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256 | public void setSpeed(Double speed) {
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257 | this.speed = speed;
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258 | }
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259 |
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260 | /**
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261 | * Sets the elevation.
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262 | * @param elevation elevation
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263 | */
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264 | public void setElevation(Double elevation) {
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265 | this.elevation = elevation;
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266 | }
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267 |
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268 | /**
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269 | * Sets associated file.
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270 | * @param file associated file
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271 | */
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272 | public void setFile(File file) {
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273 | this.file = file;
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274 | }
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275 |
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276 | /**
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277 | * Sets EXIF orientation.
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278 | * @param exifOrientation EXIF orientation
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279 | */
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280 | public void setExifOrientation(Integer exifOrientation) {
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281 | this.exifOrientation = exifOrientation;
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282 | }
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283 |
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284 | /**
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285 | * Sets EXIF time.
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286 | * @param exifTime EXIF time
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287 | */
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288 | public void setExifTime(Date exifTime) {
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289 | this.exifTime = getDefensiveDate(exifTime);
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290 | }
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291 |
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292 | /**
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293 | * Sets the EXIF GPS time.
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294 | * @param exifGpsTime the EXIF GPS time
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295 | * @since 6392
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296 | */
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297 | public void setExifGpsTime(Date exifGpsTime) {
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298 | this.exifGpsTime = getDefensiveDate(exifGpsTime);
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299 | }
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300 |
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301 | public void setGpsTime(Date gpsTime) {
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302 | this.gpsTime = getDefensiveDate(gpsTime);
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303 | }
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304 |
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305 | public void setExifCoor(LatLon exifCoor) {
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306 | this.exifCoor = exifCoor;
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307 | }
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308 |
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309 | public void setExifImgDir(Double exifDir) {
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310 | this.exifImgDir = exifDir;
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311 | }
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312 |
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313 | @Override
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314 | public ImageEntry clone() {
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315 | Object c;
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316 | try {
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317 | c = super.clone();
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318 | } catch (CloneNotSupportedException e) {
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319 | throw new RuntimeException(e);
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320 | }
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321 | return (ImageEntry) c;
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322 | }
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323 |
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324 | @Override
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325 | public int compareTo(ImageEntry image) {
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326 | if (exifTime != null && image.exifTime != null)
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327 | return exifTime.compareTo(image.exifTime);
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328 | else if (exifTime == null && image.exifTime == null)
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329 | return 0;
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330 | else if (exifTime == null)
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331 | return -1;
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332 | else
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333 | return 1;
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334 | }
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335 |
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336 | /**
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337 | * Make a fresh copy and save it in the temporary variable. Use
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338 | * {@link #applyTmp()} or {@link #discardTmp()} if the temporary variable
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339 | * is not needed anymore.
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340 | */
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341 | public void createTmp() {
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342 | tmp = clone();
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343 | tmp.tmp = null;
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344 | }
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345 |
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346 | /**
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347 | * Get temporary variable that is used for real time parameter
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348 | * adjustments. The temporary variable is created if it does not exist
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349 | * yet. Use {@link #applyTmp()} or {@link #discardTmp()} if the temporary
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350 | * variable is not needed anymore.
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351 | * @return temporary variable
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352 | */
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353 | public ImageEntry getTmp() {
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354 | if (tmp == null) {
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355 | createTmp();
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356 | }
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357 | return tmp;
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358 | }
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359 |
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360 | /**
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361 | * Copy the values from the temporary variable to the main instance. The
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362 | * temporary variable is deleted.
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363 | * @see #discardTmp()
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364 | */
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365 | public void applyTmp() {
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366 | if (tmp != null) {
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367 | pos = tmp.pos;
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368 | speed = tmp.speed;
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369 | elevation = tmp.elevation;
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370 | gpsTime = tmp.gpsTime;
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371 | exifImgDir = tmp.exifImgDir;
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372 | tmp = null;
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373 | }
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374 | }
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375 |
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376 | /**
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377 | * Delete the temporary variable. Temporary modifications are lost.
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378 | * @see #applyTmp()
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379 | */
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380 | public void discardTmp() {
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381 | tmp = null;
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382 | }
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383 |
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384 | /**
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385 | * If it has been tagged i.e. matched to a gpx track or retrieved lat/lon from exif
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386 | * @return {@code true} if it has been tagged
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387 | */
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388 | public boolean isTagged() {
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389 | return pos != null;
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390 | }
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391 |
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392 | /**
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393 | * String representation. (only partial info)
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394 | */
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395 | @Override
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396 | public String toString() {
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397 | return file.getName()+": "+
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398 | "pos = "+pos+" | "+
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399 | "exifCoor = "+exifCoor+" | "+
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400 | (tmp == null ? " tmp==null" :
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401 | " [tmp] pos = "+tmp.pos);
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402 | }
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403 |
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404 | /**
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405 | * Indicates that the image has new GPS data.
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406 | * That flag is set by new GPS data providers. It is used e.g. by the photo_geotagging plugin
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407 | * to decide for which image file the EXIF GPS data needs to be (re-)written.
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408 | * @since 6392
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409 | */
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410 | public void flagNewGpsData() {
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411 | isNewGpsData = true;
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412 | }
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413 |
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414 | /**
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415 | * Remove the flag that indicates new GPS data.
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416 | * The flag is cleared by a new GPS data consumer.
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417 | */
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418 | public void unflagNewGpsData() {
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419 | isNewGpsData = false;
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420 | }
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421 |
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422 | /**
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423 | * Queries whether the GPS data changed.
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424 | * @return {@code true} if GPS data changed, {@code false} otherwise
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425 | * @since 6392
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426 | */
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427 | public boolean hasNewGpsData() {
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428 | return isNewGpsData;
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429 | }
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430 |
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431 | /**
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432 | * Extract GPS metadata from image EXIF. Has no effect if the image file is not set
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433 | *
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434 | * If successful, fills in the LatLon, speed, elevation, image direction, and other attributes
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435 | * @since 9270
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436 | */
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437 | public void extractExif() {
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438 |
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439 | Metadata metadata;
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440 | Directory dirExif;
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441 | GpsDirectory dirGps;
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442 |
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443 | if (file == null) {
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444 | return;
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445 | }
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446 |
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447 | try {
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448 | metadata = JpegMetadataReader.readMetadata(file);
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449 | dirExif = metadata.getFirstDirectoryOfType(ExifIFD0Directory.class);
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450 | dirGps = metadata.getFirstDirectoryOfType(GpsDirectory.class);
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451 | } catch (CompoundException | IOException p) {
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452 | Main.warn(p);
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453 | setExifCoor(null);
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454 | setPos(null);
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455 | return;
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456 | }
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457 |
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458 | try {
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459 | if (dirExif != null) {
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460 | int orientation = dirExif.getInt(ExifIFD0Directory.TAG_ORIENTATION);
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461 | setExifOrientation(orientation);
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462 | }
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463 | } catch (MetadataException ex) {
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464 | if (Main.isDebugEnabled()) {
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465 | Main.debug(ex.getMessage());
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466 | }
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467 | }
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468 |
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469 | // Changed to silently cope with no time info in exif. One case
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470 | // of person having time that couldn't be parsed, but valid GPS info
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471 | try {
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472 | setExifTime(ExifReader.readTime(file));
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473 | } catch (ParseException ex) {
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474 | setExifTime(null);
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475 | }
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476 |
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477 | if (dirGps == null) {
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478 | setExifCoor(null);
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479 | setPos(null);
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480 | return;
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481 | }
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482 |
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483 | try {
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484 | double speed = dirGps.getDouble(GpsDirectory.TAG_SPEED);
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485 | String speedRef = dirGps.getString(GpsDirectory.TAG_SPEED_REF);
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486 | if ("M".equalsIgnoreCase(speedRef)) {
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487 | // miles per hour
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488 | speed *= SystemOfMeasurement.IMPERIAL.bValue / 1000;
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489 | } else if ("N".equalsIgnoreCase(speedRef)) {
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490 | // knots == nautical miles per hour
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491 | speed *= SystemOfMeasurement.NAUTICAL_MILE.bValue / 1000;
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492 | }
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493 | // default is K (km/h)
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494 | setSpeed(speed);
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495 | } catch (Exception ex) {
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496 | if (Main.isDebugEnabled()) {
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497 | Main.debug(ex.getMessage());
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498 | }
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499 | }
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500 |
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501 | try {
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502 | double ele = dirGps.getDouble(GpsDirectory.TAG_ALTITUDE);
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503 | int d = dirGps.getInt(GpsDirectory.TAG_ALTITUDE_REF);
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504 | if (d == 1) {
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505 | ele *= -1;
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506 | }
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507 | setElevation(ele);
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508 | } catch (MetadataException ex) {
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509 | if (Main.isDebugEnabled()) {
|
---|
510 | Main.debug(ex.getMessage());
|
---|
511 | }
|
---|
512 | }
|
---|
513 |
|
---|
514 | try {
|
---|
515 | LatLon latlon = ExifReader.readLatLon(dirGps);
|
---|
516 | setExifCoor(latlon);
|
---|
517 | setPos(getExifCoor());
|
---|
518 |
|
---|
519 | } catch (Exception ex) { // (other exceptions, e.g. #5271)
|
---|
520 | Main.error("Error reading EXIF from file: " + ex);
|
---|
521 | setExifCoor(null);
|
---|
522 | setPos(null);
|
---|
523 | }
|
---|
524 |
|
---|
525 | try {
|
---|
526 | Double direction = ExifReader.readDirection(dirGps);
|
---|
527 | if (direction != null) {
|
---|
528 | setExifImgDir(direction);
|
---|
529 | }
|
---|
530 | } catch (Exception ex) { // (CompoundException and other exceptions, e.g. #5271)
|
---|
531 | if (Main.isDebugEnabled()) {
|
---|
532 | Main.debug(ex.getMessage());
|
---|
533 | }
|
---|
534 | }
|
---|
535 |
|
---|
536 | // Time and date. We can have these cases:
|
---|
537 | // 1) GPS_TIME_STAMP not set -> date/time will be null
|
---|
538 | // 2) GPS_DATE_STAMP not set -> use EXIF date or set to default
|
---|
539 | // 3) GPS_TIME_STAMP and GPS_DATE_STAMP are set
|
---|
540 | int[] timeStampComps = dirGps.getIntArray(GpsDirectory.TAG_TIME_STAMP);
|
---|
541 | if (timeStampComps != null) {
|
---|
542 | int gpsHour = timeStampComps[0];
|
---|
543 | int gpsMin = timeStampComps[1];
|
---|
544 | int gpsSec = timeStampComps[2];
|
---|
545 | Calendar cal = new GregorianCalendar(TimeZone.getTimeZone("UTC"));
|
---|
546 |
|
---|
547 | // We have the time. Next step is to check if the GPS date stamp is set.
|
---|
548 | // dirGps.getString() always succeeds, but the return value might be null.
|
---|
549 | String dateStampStr = dirGps.getString(GpsDirectory.TAG_DATE_STAMP);
|
---|
550 | if (dateStampStr != null && dateStampStr.matches("^\\d+:\\d+:\\d+$")) {
|
---|
551 | String[] dateStampComps = dateStampStr.split(":");
|
---|
552 | cal.set(Calendar.YEAR, Integer.parseInt(dateStampComps[0]));
|
---|
553 | cal.set(Calendar.MONTH, Integer.parseInt(dateStampComps[1]) - 1);
|
---|
554 | cal.set(Calendar.DAY_OF_MONTH, Integer.parseInt(dateStampComps[2]));
|
---|
555 | } else {
|
---|
556 | // No GPS date stamp in EXIF data. Copy it from EXIF time.
|
---|
557 | // Date is not set if EXIF time is not available.
|
---|
558 | if (hasExifTime()) {
|
---|
559 | // Time not set yet, so we can copy everything, not just date.
|
---|
560 | cal.setTime(getExifTime());
|
---|
561 | }
|
---|
562 | }
|
---|
563 |
|
---|
564 | cal.set(Calendar.HOUR_OF_DAY, gpsHour);
|
---|
565 | cal.set(Calendar.MINUTE, gpsMin);
|
---|
566 | cal.set(Calendar.SECOND, gpsSec);
|
---|
567 |
|
---|
568 | setExifGpsTime(cal.getTime());
|
---|
569 | }
|
---|
570 | }
|
---|
571 | }
|
---|