Version 19, May 2018

[GpsPrune.git] / tim / prune / jpeg / ExifGateway.java

diff --git a/tim/prune/jpeg/ExifGateway.java b/tim/prune/jpeg/ExifGateway.java
deleted file mode 100644 (file)
index c11ba2e..0000000
--- a/tim/prune/jpeg/ExifGateway.java
+++ /dev/null
@@ -1,108 +0,0 @@
-package tim.prune.jpeg;
-
-import java.io.File;
-import javax.swing.JOptionPane;
-import tim.prune.I18nManager;
-
-/**
- * Skeleton gateway to the Exif functions.
- * This is required by Debian to divert Exif handling
- * to the external libmetadata-extractor-java library
- * instead of the included modified routines.
- *
- * Switching between internal and external libraries is
- * handled by the ExifLibrarySwitch
- */
-public abstract class ExifGateway
-{
-       /** Library object to call */
-       private static ExifLibrary _exifLibrary = null;
-       /** Flag to set whether failure warning has already been shown */
-       private static boolean _exifFailWarned = false;
-
-       /** Static block to initialise library */
-       static
-       {
-               String libraryClass = ExifLibrarySwitch.USE_INTERNAL_LIBRARY?"InternalExifLibrary":"ExternalExifLibrary";
-               try
-               {
-                       _exifLibrary = (ExifLibrary) Class.forName("tim.prune.jpeg." + libraryClass).newInstance();
-               }
-               catch (Throwable nolib) {_exifLibrary = null;}
-       }
-
-
-       /**
-        * Get the Jpeg data from the given file
-        * @param inFile file to read
-        * @return jpeg data, or null if none found
-        */
-       public static JpegData getJpegData(File inFile)
-       {
-               try
-               {
-                       // Call library (if found)
-                       if (_exifLibrary != null) {
-                               JpegData data = _exifLibrary.getJpegData(inFile);
-                               return data;
-                       }
-               }
-               catch (LinkageError nolib) {
-                       System.err.println("Link: " + nolib.getMessage());
-                       nolib.printStackTrace();
-               }
-               // Not successful - warn if necessary
-               if (!_exifFailWarned)
-               {
-                       JOptionPane.showMessageDialog(null, I18nManager.getText("error.jpegload.exifreadfailed"),
-                               I18nManager.getText("error.jpegload.dialogtitle"), JOptionPane.WARNING_MESSAGE);
-                       _exifFailWarned = true;
-               }
-               return null;
-       }
-
-       /**
-        * @return key to use to describe library, matching key for about dialog
-        */
-       public static String getDescriptionKey()
-       {
-               String key = ExifLibrarySwitch.USE_INTERNAL_LIBRARY?"internal":"external";
-               if (_exifLibrary == null || !_exifLibrary.looksOK()) {key = key + ".failed";}
-               return key;
-       }
-
-
-       /**
-        * @param inNumerator numerator from Rational
-        * @param inDenominator denominator from Rational
-        * @return the value of the specified number as a positive <code>double</code>.
-        * Prevents interpretation of 32 bit numbers as negative, and forces a positive answer
-        */
-       public static final double convertToPositiveValue(int inNumerator, int inDenominator)
-       {
-               if (inDenominator == 0) return 0.0;
-               double numeratorDbl = inNumerator;
-               double denomDbl = inDenominator;
-               if (inNumerator >= 0)
-                       return numeratorDbl / denomDbl;
-               final double correction = Math.pow(2.0, 32);
-               numeratorDbl += correction;
-               if (inDenominator < 0) denomDbl += correction;
-               return numeratorDbl / denomDbl;
-       }
-
-
-       /**
-        * @param inNumerator numerator from Rational
-        * @param inDenominator denominator from Rational
-        * @return the value of the specified number as a positive <code>double</code>.
-        * Forces a positive answer
-        */
-       public static final double convertToPositiveValue(long inNumerator, long inDenominator)
-       {
-               if (inDenominator == 0L) return 0.0;
-               final double numeratorDbl = inNumerator;
-               final double denomDbl = inDenominator;
-               return numeratorDbl / denomDbl;
-       }
-}