X-Git-Url: https://gitweb.fperrin.net/?a=blobdiff_plain;f=tim%2Fprune%2Fjpeg%2FInternalExifLibrary.java;fp=tim%2Fprune%2Fjpeg%2FInternalExifLibrary.java;h=c8b17089990bc405ada9492ab06bdc3937674200;hb=c0387c124840c9407e040600fda88f3c3e8f6aa6;hp=0000000000000000000000000000000000000000;hpb=1ee49ae3c8ef3aa2e63eadd458531e5f8bd4f92c;p=GpsPrune.git

diff --git a/tim/prune/jpeg/InternalExifLibrary.java b/tim/prune/jpeg/InternalExifLibrary.java
new file mode 100644
index 0000000..c8b1708
--- /dev/null
+++ b/tim/prune/jpeg/InternalExifLibrary.java
@@ -0,0 +1,42 @@
+package tim.prune.jpeg;
+
+import java.io.File;
+import tim.prune.jpeg.drew.ExifReader;
+import tim.prune.jpeg.drew.JpegException;
+
+/**
+ * Class to act as a gateway into the internal exif library functions.
+ * This should be the only class with dependence on the jpeg.drew package.
+ * Should not be included if external library will be used (eg Debian).
+ */
+public class InternalExifLibrary implements ExifLibrary
+{
+	/**
+	 * Use the _internal_ exif library to get the data from the given file
+	 * @param inFile file to access
+	 * @return Jpeg data if available, otherwise null
+	 */
+	public JpegData getJpegData(File inFile)
+	{
+		JpegData data = null;
+		try {
+			data = new ExifReader(inFile).extract();
+		}
+		catch (JpegException jpe) {} // data remains null
+		return data;
+	}
+
+	/**
+	 * Check whether the exifreader class can be correctly resolved
+	 * @return true if it looks ok
+	 */
+	public boolean looksOK()
+	{
+		try {
+			String test = ExifReader.class.getName();
+			if (test != null) return true;
+		}
+		catch (LinkageError le) {}
+		return false;
+	}
+}