1 files changed, 102 insertions, 0 deletions
diff --git a/libjava/classpath/javax/imageio/ImageTranscoder.java b/libjava/classpath/javax/imageio/ImageTranscoder.java
new file mode 100644
index 000000000..352bb18b7
--- /dev/null
+++ b/libjava/classpath/javax/imageio/ImageTranscoder.java
@@ -0,0 +1,102 @@
+/* ImageTranscoder.java -- Image metadata transcoder.
+   Copyright (C) 2004  Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package javax.imageio;
+
+import javax.imageio.metadata.IIOMetadata;
+
+/**
+ * An ImageTranscoder translates IIOMetadata objects provided by an
+ * ImageReader into corresponding IIOMetadata objects that can be
+ * understood by a given ImageWriter.
+ *
+ * Usually an ImageWriter will implement ImageTranscoder directly in
+ * which case the conversion methods will return IIOMetadata objects
+ * appropriate for this ImageWriter.
+ *
+ * Independent transcoders are also allowed; they must have knowledge
+ * of both the source IIOMetadata provided by the reader and the
+ * returned IIOMetadata expected by the writer.
+ *
+ * @author Michael Koch (konqueror@gmx.de)
+ */
+public interface ImageTranscoder
+{
+  /**
+   * Converts IIOMetadata from an input reader format, returning an
+   * IIOMetadata suitable for use by an image writer.
+   *
+   * The ImageTypeSpecifier specifies the destination image type.
+   *
+   * An optional ImageWriteParam argument is available in case the
+   * image writing parameters affect the metadata conversion.
+   *
+   * @param inData the metadata coming from an image reader
+   * @param imageType the output image type of the writer
+   * @param param the image writing parameters or null
+   *
+   * @return the converted metadata that should be used by the image
+   * writer, or null if this ImageTranscoder has no knowledge of the
+   * input metadata
+   *
+   * @exception IllegalArgumentException if either inData or imageType
+   * is null
+   */
+  IIOMetadata convertImageMetadata(IIOMetadata inData,
+                                   ImageTypeSpecifier imageType,
+                                   ImageWriteParam param);
+
+  /**
+   * Converts IIOMetadata from an input stream format, returning an
+   * IIOMetadata suitable for use by an image writer.
+   *
+   * An optional ImageWriteParam argument is available in case the
+   * image writing parameters affect the metadata conversion.
+   *
+   * @param inData the metadata coming from an input image stream
+   * @param param the image writing parameters or null
+   *
+   * @return the converted metadata that should be used by the image
+   * writer, or null if this ImageTranscoder has no knowledge of the
+   * input metadata
+   *
+   * @exception IllegalArgumentException if inData is null
+   */
+  IIOMetadata convertStreamMetadata(IIOMetadata inData,
+                                    ImageWriteParam param);
+}