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+/* BMPImageWriter.java --
+ Copyright (C) 2006 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 gnu.javax.imageio.bmp;
+
+import java.io.IOException;
+
+import javax.imageio.IIOImage;
+import javax.imageio.ImageTypeSpecifier;
+import javax.imageio.ImageWriteParam;
+import javax.imageio.ImageWriter;
+import javax.imageio.metadata.IIOMetadata;
+import javax.imageio.spi.ImageWriterSpi;
+import javax.imageio.stream.ImageOutputStream;
+
+public class BMPImageWriter
+ extends ImageWriter
+{
+ protected BMPEncoder encoder;
+ protected BMPFileHeader fileHeader;
+ protected BMPInfoHeader infoHeader;
+
+ /**
+ * Construct an bmp image writer.
+ *
+ * @param originatingProvider - the provider that is constructing this image
+ * writer, or null
+ */
+ protected BMPImageWriter(ImageWriterSpi originatingProvider)
+ {
+ super(originatingProvider);
+ encoder = null;
+ fileHeader = null;
+ infoHeader = null;
+ }
+
+ /**
+ * Convert 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
+ */
+ public IIOMetadata convertImageMetadata(IIOMetadata inData,
+ ImageTypeSpecifier imageType,
+ ImageWriteParam param)
+ {
+ // FIXME: Support metadata.
+ if (inData == null || imageType == null)
+ throw new IllegalArgumentException("IIOMetadata and ImageTypeSpecifier cannot be null.");
+ return null;
+ }
+
+ /**
+ * Convert 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
+ */
+ public IIOMetadata convertStreamMetadata (IIOMetadata inData,
+ ImageWriteParam param)
+ {
+ // FIXME: Support metadata.
+ if (inData == null)
+ throw new IllegalArgumentException("IIOMetadata cannot be null.");
+ return null;
+ }
+
+ /**
+ * Get a metadata object appropriate for encoding an image specified
+ * by the given image type specifier and optional image write
+ * parameters.
+ *
+ * @param imageType - an image type specifier
+ * @param param - image writing parameters, or null
+ * @return a metadata object appropriate for encoding an image of
+ * the given type with the given parameters
+ */
+ public IIOMetadata getDefaultImageMetadata (ImageTypeSpecifier imageType, ImageWriteParam param)
+ {
+ // FIXME: Support metadata.
+ return null;
+ }
+
+ /**
+ * Get a metadata object appropriate for encoding the default image
+ * type handled by this writer, optionally considering image write
+ * parameters.
+ *
+ * @param param - image writing parameters, or null
+ * @return a metadata object appropriate for encoding an image of
+ * the default type with the given parameters
+ */
+ public IIOMetadata getDefaultStreamMetadata (ImageWriteParam param)
+ {
+ // FIXME: Support metadata.
+ return null;
+ }
+
+ /**
+ * Write an image stream, including thumbnails and metadata to the
+ * output stream. The output must have been set prior to this
+ * method being called. Metadata associated with the stream may be
+ * supplied, or it can be left null. IIOImage may contain raster
+ * data if this writer supports rasters, or it will contain a
+ * rendered image. Thumbnails are resized if need be. Image
+ * writing parameters may be specified to affect writing, or may be
+ * left null.
+ *
+ * @param streamMetadata - metadata associated with this stream, or
+ * null
+ * @param image - an IIOImage containing image data, metadata and
+ * thumbnails to be written
+ * @param param - image writing parameters, or null
+ * @exception IOException if a write error occurs
+ * @throws BMPException if the encoder has not been initialized.
+ */
+ public void write(IIOMetadata streamMetadata, IIOImage image,
+ ImageWriteParam param) throws IOException, BMPException
+ {
+ checkStream();
+ ImageOutputStream out = (ImageOutputStream) output;
+ fileHeader = new BMPFileHeader(out, image);
+ infoHeader = new BMPInfoHeader(out, image, param);
+ encoder = BMPEncoder.getEncoder(fileHeader, infoHeader);
+
+ if (encoder != null)
+ encoder.encode(out, streamMetadata, image, param);
+ else
+ throw new BMPException("Encoder has not been initialized.");
+ }
+
+ /**
+ * Checks the output stream.
+ *
+ * @throws IOException if there is an error with the output stream
+ */
+ private void checkStream() throws IOException
+ {
+ if (!(output instanceof ImageOutputStream))
+ throw new IllegalStateException("Output not an ImageOutputStream.");
+ if (output == null)
+ throw new IllegalStateException("No output stream.");
+ }
+}