src/tim/prune/load/JpegLoader.java

   1 package tim.prune.load;
   2
   3 import java.io.File;
   4 import java.util.TreeSet;
   5
   6 import javax.swing.BoxLayout;
   7 import javax.swing.JCheckBox;
   8 import javax.swing.JFileChooser;
   9 import javax.swing.JFrame;
  10 import javax.swing.JPanel;
  11
  12 import tim.prune.App;
  13 import tim.prune.I18nManager;
  14 import tim.prune.config.Config;
  15 import tim.prune.data.Altitude;
  16 import tim.prune.data.DataPoint;
  17 import tim.prune.data.LatLonRectangle;
  18 import tim.prune.data.Latitude;
  19 import tim.prune.data.Longitude;
  20 import tim.prune.data.Photo;
  21 import tim.prune.data.Timestamp;
  22 import tim.prune.data.TimestampLocal;
  23 import tim.prune.data.TimestampUtc;
  24 import tim.prune.data.UnitSetLibrary;
  25 import tim.prune.function.Cancellable;
  26 import tim.prune.jpeg.InternalExifLibrary;
  27 import tim.prune.jpeg.JpegData;
  28
  29 /**
  30  * Class to manage the loading of Jpegs and dealing with the GPS data from them
  31  */
  32 public class JpegLoader implements Runnable, Cancellable
  33 {
  34         private App _app = null;
  35         private JFrame _parentFrame = null;
  36         private JFileChooser _fileChooser = null;
  37         private GenericFileFilter _fileFilter = null;
  38         private JCheckBox _subdirCheckbox = null;
  39         private JCheckBox _noExifCheckbox = null;
  40         private JCheckBox _outsideAreaCheckbox = null;
  41         private MediaLoadProgressDialog _progressDialog = null;
  42         private int[] _fileCounts = null;
  43         private boolean _cancelled = false;
  44         private LatLonRectangle _trackRectangle = null;
  45         private TreeSet<Photo> _photos = null;
  46
  47
  48         /**
  49          * Constructor
  50          * @param inApp Application object to inform of photo load
  51          * @param inParentFrame parent frame to reference for dialogs
  52          */
  53         public JpegLoader(App inApp, JFrame inParentFrame)
  54         {
  55                 _app = inApp;
  56                 _parentFrame = inParentFrame;
  57                 _fileFilter = new JpegFileFilter();
  58         }
  59
  60
  61         /**
  62          * Open the GUI to select options and start the load
  63          * @param inRectangle track rectangle
  64          */
  65         public void openDialog(LatLonRectangle inRectangle)
  66         {
  67                 // Create file chooser if necessary
  68                 if (_fileChooser == null)
  69                 {
  70                         _fileChooser = new JFileChooser();
  71                         _fileChooser.setMultiSelectionEnabled(true);
  72                         _fileChooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
  73                         _fileChooser.setFileFilter(_fileFilter);
  74                         _fileChooser.setDialogTitle(I18nManager.getText("menu.file.addphotos"));
  75                         _subdirCheckbox = new JCheckBox(I18nManager.getText("dialog.jpegload.subdirectories"));
  76                         _subdirCheckbox.setSelected(true);
  77                         _noExifCheckbox = new JCheckBox(I18nManager.getText("dialog.jpegload.loadjpegswithoutcoords"));
  78                         _noExifCheckbox.setSelected(true);
  79                         _outsideAreaCheckbox = new JCheckBox(I18nManager.getText("dialog.jpegload.loadjpegsoutsidearea"));
  80                         _outsideAreaCheckbox.setSelected(true);
  81                         JPanel panel = new JPanel();
  82                         panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
  83                         panel.add(_subdirCheckbox);
  84                         panel.add(_noExifCheckbox);
  85                         panel.add(_outsideAreaCheckbox);
  86                         _fileChooser.setAccessory(panel);
  87                         // start from directory in config if already set by other operations
  88                         String configDir = Config.getConfigString(Config.KEY_PHOTO_DIR);
  89                         if (configDir == null) {configDir = Config.getConfigString(Config.KEY_TRACK_DIR);}
  90                         if (configDir != null) {_fileChooser.setCurrentDirectory(new File(configDir));}
  91                 }
  92                 // enable/disable track checkbox
  93                 _trackRectangle = inRectangle;
  94                 _outsideAreaCheckbox.setEnabled(_trackRectangle != null && !_trackRectangle.isEmpty());
  95                 // Show file dialog to choose file / directory(ies)
  96                 if (_fileChooser.showOpenDialog(_parentFrame) == JFileChooser.APPROVE_OPTION)
  97                 {
  98                         // Bring up dialog before starting
  99                         _progressDialog = new MediaLoadProgressDialog(_parentFrame, this);
 100                         _progressDialog.show();
 101                         // start thread for processing
 102                         new Thread(this).start();
 103                 }
 104         }
 105
 106         /** Cancel */
 107         public void cancel() {
 108                 _cancelled = true;
 109         }
 110
 111
 112         /**
 113          * Run method for performing tasks in separate thread
 114          */
 115         public void run()
 116         {
 117                 // Initialise arrays, errors, summaries
 118                 _fileCounts = new int[3]; // files, jpegs, gps
 119                 _photos = new TreeSet<Photo>(new MediaSorter());
 120                 File[] files = _fileChooser.getSelectedFiles();
 121                 // Loop recursively over selected files/directories to count files
 122                 int numFiles = countFileList(files, true, _subdirCheckbox.isSelected());
 123                 // Set up the progress bar for this number of files
 124                 _progressDialog.showProgress(0, numFiles);
 125                 _cancelled = false;
 126
 127                 // Process the files recursively and build lists of photos
 128                 processFileList(files, true, _subdirCheckbox.isSelected());
 129                 _progressDialog.close();
 130                 if (_cancelled) {return;}
 131
 132                 if (_fileCounts[0] == 0)
 133                 {
 134                         // No files found at all
 135                         _app.showErrorMessage("error.jpegload.dialogtitle", "error.jpegload.nofilesfound");
 136                 }
 137                 else if (_fileCounts[1] == 0)
 138                 {
 139                         // No jpegs found
 140                         _app.showErrorMessage("error.jpegload.dialogtitle", "error.jpegload.nojpegsfound");
 141                 }
 142                 else if (!_noExifCheckbox.isSelected() && _fileCounts[2] == 0)
 143                 {
 144                         // Need coordinates but no gps information found
 145                         _app.showErrorMessage("error.jpegload.dialogtitle", "error.jpegload.nogpsfound");
 146                 }
 147                 else
 148                 {
 149                         // Found some photos to load - pass information back to app
 150                         _app.informPhotosLoaded(_photos);
 151                 }
 152         }
 153
 154
 155         /**
 156          * Process a list of files and/or directories
 157          * @param inFiles array of file/directories
 158          * @param inFirstDir true if first directory
 159          * @param inDescend true to descend to subdirectories
 160          */
 161         private void processFileList(File[] inFiles, boolean inFirstDir, boolean inDescend)
 162         {
 163                 if (inFiles == null) return;
 164                 // Loop over elements in array
 165                 for (int i=0; i<inFiles.length && !_cancelled; i++)
 166                 {
 167                         File file = inFiles[i];
 168                         if (file.exists() && file.canRead())
 169                         {
 170                                 // Check whether it's a file or a directory
 171                                 if (file.isFile())
 172                                 {
 173                                         processFile(file);
 174                                 }
 175                                 else if (file.isDirectory() && (inFirstDir || inDescend))
 176                                 {
 177                                         // Always process first directory,
 178                                         // only process subdirectories if checkbox selected
 179                                         File[] files = file.listFiles();
 180                                         processFileList(files, false, inDescend);
 181                                 }
 182                         }
 183                         // if file doesn't exist or isn't readable - ignore
 184                 }
 185         }
 186
 187
 188         /**
 189          * Process the given file, by attempting to extract its tags
 190          * @param inFile file object to read
 191          */
 192         private void processFile(File inFile)
 193         {
 194                 // Update progress bar
 195                 _fileCounts[0]++; // file found
 196                 _progressDialog.showProgress(_fileCounts[0], -1);
 197
 198                 // Check whether filename corresponds with accepted filenames
 199                 if (!_fileFilter.acceptFilename(inFile.getName())) {return;}
 200                 // If it's a Jpeg, we can use ExifReader to get coords, otherwise we could try exiftool (if it's installed)
 201
 202                 if (inFile.exists() && inFile.canRead()) {
 203                         _fileCounts[1]++; // jpeg found
 204                 }
 205                 Photo photo = createPhoto(inFile);
 206                 if (photo.getDataPoint() != null) {
 207                         _fileCounts[2]++; // photo has coordinates
 208                 }
 209                 // Check the criteria for adding the photo - check whether the photo has coordinates and if so if they're within the rectangle
 210                 if ( (photo.getDataPoint() != null || _noExifCheckbox.isSelected())
 211                         && (photo.getDataPoint() == null || !_outsideAreaCheckbox.isEnabled()
 212                                 || _outsideAreaCheckbox.isSelected() || _trackRectangle.containsPoint(photo.getDataPoint())))
 213                 {
 214                         _photos.add(photo);
 215                 }
 216         }
 217
 218         /**
 219          * Create a Photo object for the given file, including reading exif information
 220          * @param inFile file object
 221          * @return Photo object
 222          */
 223         public static Photo createPhoto(File inFile)
 224         {
 225                 // Create Photo object
 226                 Photo photo = new Photo(inFile);
 227                 // Try to get information out of exif
 228                 JpegData jpegData = new InternalExifLibrary().getJpegData(inFile);
 229                 Timestamp timestamp = null;
 230                 if (jpegData != null)
 231                 {
 232                         if (jpegData.isGpsValid())
 233                         {
 234                                 timestamp = createTimestamp(jpegData.getGpsDatestamp(), jpegData.getGpsTimestamp());
 235                                 // Make DataPoint and attach to Photo
 236                                 DataPoint point = createDataPoint(jpegData);
 237                                 point.setPhoto(photo);
 238                                 point.setSegmentStart(true);
 239                                 photo.setDataPoint(point);
 240                                 photo.setOriginalStatus(Photo.Status.TAGGED);
 241                         }
 242                         // Use exif timestamp if gps timestamp not available
 243                         if (timestamp == null && jpegData.getOriginalTimestamp() != null) {
 244                                 timestamp = createTimestamp(jpegData.getOriginalTimestamp());
 245                         }
 246                         if (timestamp == null && jpegData.getDigitizedTimestamp() != null) {
 247                                 timestamp = createTimestamp(jpegData.getDigitizedTimestamp());
 248                         }
 249                         photo.setExifThumbnail(jpegData.getThumbnailImage());
 250                         // Also extract orientation tag for setting rotation state of photo
 251                         photo.setRotation(jpegData.getRequiredRotation());
 252                         // Set bearing, if any
 253                         photo.setBearing(jpegData.getBearing());
 254                 }
 255                 // Use file timestamp if exif timestamp isn't available
 256                 if (timestamp == null) {
 257                         timestamp = new TimestampUtc(inFile.lastModified());
 258                 }
 259                 // Apply timestamp to photo (but not its point)
 260                 photo.setTimestamp(timestamp);
 261
 262                 return photo;
 263         }
 264
 265
 266         /**
 267          * Recursively count the selected Files so we can draw a progress bar
 268          * @param inFiles file list
 269          * @param inFirstDir true if first directory
 270          * @param inDescend true to descend to subdirectories
 271          * @return count of the files selected
 272          */
 273         private int countFileList(File[] inFiles, boolean inFirstDir, boolean inDescend)
 274         {
 275                 int fileCount = 0;
 276                 if (inFiles != null)
 277                 {
 278                         // Loop over elements in array
 279                         for (int i=0; i<inFiles.length; i++)
 280                         {
 281                                 File file = inFiles[i];
 282                                 if (file.exists() && file.canRead())
 283                                 {
 284                                         // Store first directory in config for later
 285                                         if (i == 0 && inFirstDir) {
 286                                                 File workingDir = file.isDirectory()?file:file.getParentFile();
 287                                                 Config.setConfigString(Config.KEY_PHOTO_DIR, workingDir.getAbsolutePath());
 288                                         }
 289                                         // Check whether it's a file or a directory
 290                                         if (file.isFile())
 291                                         {
 292                                                 fileCount++;
 293                                         }
 294                                         else if (file.isDirectory() && (inFirstDir || inDescend))
 295                                         {
 296                                                 fileCount += countFileList(file.listFiles(), false, inDescend);
 297                                         }
 298                                 }
 299                         }
 300                 }
 301                 return fileCount;
 302         }
 303
 304
 305         /**
 306          * Create a DataPoint object from the given jpeg data
 307          * @param inData Jpeg data including coordinates
 308          * @return DataPoint object for Track
 309          */
 310         private static DataPoint createDataPoint(JpegData inData)
 311         {
 312                 // Create model objects from jpeg data
 313                 double latval = getCoordinateDoubleValue(inData.getLatitude(),
 314                         inData.getLatitudeRef() == 'N' || inData.getLatitudeRef() == 'n');
 315                 Latitude latitude = new Latitude(latval, Latitude.FORMAT_DEG_MIN_SEC);
 316                 double lonval = getCoordinateDoubleValue(inData.getLongitude(),
 317                         inData.getLongitudeRef() == 'E' || inData.getLongitudeRef() == 'e');
 318                 Longitude longitude = new Longitude(lonval, Longitude.FORMAT_DEG_MIN_SEC);
 319                 Altitude altitude = null;
 320                 if (inData.hasAltitude()) {
 321                         altitude = new Altitude(inData.getAltitude(), UnitSetLibrary.UNITS_METRES);
 322                 }
 323                 return new DataPoint(latitude, longitude, altitude);
 324         }
 325
 326
 327         /**
 328          * Convert an array of 3 doubles (deg-min-sec) into a double coordinate value
 329          * @param inValues array of three doubles for deg-min-sec
 330          * @param isPositive true for positive hemisphere, for positive double value
 331          * @return double value of coordinate, either positive or negative
 332          */
 333         private static double getCoordinateDoubleValue(double[] inValues, boolean isPositive)
 334         {
 335                 if (inValues == null || inValues.length != 3) return 0.0;
 336                 double value = inValues[0]        // degrees
 337                         + inValues[1] / 60.0          // minutes
 338                         + inValues[2] / 60.0 / 60.0;  // seconds
 339                 // make sure it's the correct sign
 340                 value = Math.abs(value);
 341                 if (!isPositive) value = -value;
 342                 return value;
 343         }
 344
 345
 346         /**
 347          * Use the given int values to create a timestamp
 348          * @param inDate ints describing date
 349          * @param inTime ints describing time
 350          * @return Timestamp object corresponding to inputs
 351          */
 352         private static Timestamp createTimestamp(int[] inDate, int[] inTime)
 353         {
 354                 if (inDate == null || inTime == null || inDate.length != 3 || inTime.length != 3) {
 355                         return null;
 356                 }
 357                 return new TimestampLocal(inDate[0], inDate[1], inDate[2],
 358                         inTime[0], inTime[1], inTime[2]);
 359         }
 360
 361
 362         /**
 363          * Use the given String value to create a timestamp
 364          * @param inStamp timestamp from exif
 365          * @return Timestamp object corresponding to input
 366          */
 367         private static Timestamp createTimestamp(String inStamp)
 368         {
 369                 Timestamp stamp = null;
 370                 try
 371                 {
 372                         stamp = new TimestampLocal(Integer.parseInt(inStamp.substring(0, 4)),
 373                                 Integer.parseInt(inStamp.substring(5, 7)),
 374                                 Integer.parseInt(inStamp.substring(8, 10)),
 375                                 Integer.parseInt(inStamp.substring(11, 13)),
 376                                 Integer.parseInt(inStamp.substring(14, 16)),
 377                                 Integer.parseInt(inStamp.substring(17)));
 378                 }
 379                 catch (NumberFormatException nfe) {}
 380                 return stamp;
 381         }
 382 }