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- /*
- * Licensed to the Apache Software Foundation (ASF) under one or more
- * contributor license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright ownership.
- * The ASF licenses this file to You under the Apache License, Version 2.0
- * (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
- /* $Id$ */
-
- package org.apache.fop.render.bitmap;
-
- // Code originaly contributed by Oleg Tkachenko of Multiconn International Ltd
- // (olegt@multiconn.com).
-
- import java.awt.image.BufferedImage;
- import java.awt.image.DataBuffer;
- import java.awt.image.PixelInterleavedSampleModel;
- import java.awt.image.RenderedImage;
- import java.awt.image.SampleModel;
- import java.awt.image.SinglePixelPackedSampleModel;
- import java.io.IOException;
- import java.io.OutputStream;
- import java.util.Iterator;
- import java.util.NoSuchElementException;
-
- import org.apache.commons.logging.Log;
-
- import org.apache.xmlgraphics.image.GraphicsUtil;
- import org.apache.xmlgraphics.image.rendered.FormatRed;
- import org.apache.xmlgraphics.image.writer.ImageWriter;
- import org.apache.xmlgraphics.image.writer.ImageWriterParams;
- import org.apache.xmlgraphics.image.writer.ImageWriterRegistry;
- import org.apache.xmlgraphics.image.writer.MultiImageWriter;
-
- import org.apache.fop.apps.FOPException;
- import org.apache.fop.apps.FOUserAgent;
- import org.apache.fop.render.java2d.Java2DRenderer;
-
- /**
- * <p>
- * This class represents renderer to TIFF (Tagged Image File Format) format. It
- * is one of the most popular and flexible of the current public domain raster
- * file formats, which was is primarily designed for raster data interchange.
- * Supported compression types are:
- * <ul>
- * <li>Raw noncompressed data</li>
- * <li>Byte-oriented run-length encoding "PackBits" compression.</li>
- * <li>Modified Huffman Compression (CCITT Group 3 1D facsimile compression)</li>
- * <li>CCITT T.4 bilevel compression (CCITT Group 3 2D facsimile compression)</li>
- * <li>CCITT T.6 bilevel compression (CCITT Group 4 facsimile compression)</li>
- * <li>JPEG-in-TIFF compression</li>
- * <li>DEFLATE lossless compression (also known as "Zip-in-TIFF")</li>
- * <li>LZW compression</li>
- * TODO
- * <p>
- * This class actually does not render itself, instead it extends
- * <code>org.apache.fop.render.java2D.Java2DRenderer</code> and just encode
- * rendering results into TIFF format using Batik's image codec
- */
- public class TIFFRenderer extends Java2DRenderer implements TIFFConstants {
-
- /** ImageWriter parameters */
- private ImageWriterParams writerParams;
-
- /** Image Type as parameter for the BufferedImage constructor (see BufferedImage.TYPE_*) */
- private int bufferedImageType = BufferedImage.TYPE_INT_ARGB;
-
- private OutputStream outputStream;
-
- /** {@inheritDoc} */
- public String getMimeType() {
- return MIME_TYPE;
- }
-
- /** Creates TIFF renderer. */
- public TIFFRenderer() {
- writerParams = new ImageWriterParams();
- writerParams.setCompressionMethod(COMPRESSION_PACKBITS);
- }
-
- /**
- * {@inheritDoc}
- * org.apache.fop.apps.FOUserAgent)
- */
- public void setUserAgent(FOUserAgent foUserAgent) {
- super.setUserAgent(foUserAgent);
-
- //Set target resolution
- int dpi = Math.round(userAgent.getTargetResolution());
- writerParams.setResolution(dpi);
- }
-
- /** {@inheritDoc} */
- public void startRenderer(OutputStream outputStream) throws IOException {
- this.outputStream = outputStream;
- super.startRenderer(outputStream);
- }
-
- /** {@inheritDoc} */
- public void stopRenderer() throws IOException {
- super.stopRenderer();
- log.debug("Starting TIFF encoding ...");
-
- // Creates lazy iterator over generated page images
- Iterator pageImagesItr = new LazyPageImagesIterator(getNumberOfPages(), log);
-
- // Creates writer
- ImageWriter writer = ImageWriterRegistry.getInstance().getWriterFor(getMimeType());
- if (writer == null) {
- BitmapRendererEventProducer eventProducer
- = BitmapRendererEventProducer.Provider.get(
- getUserAgent().getEventBroadcaster());
- eventProducer.noImageWriterFound(this, getMimeType());
- }
- if (writer.supportsMultiImageWriter()) {
- MultiImageWriter multiWriter = writer.createMultiImageWriter(outputStream);
- try {
- // Write all pages/images
- while (pageImagesItr.hasNext()) {
- RenderedImage img = (RenderedImage) pageImagesItr.next();
- multiWriter.writeImage(img, writerParams);
- }
- } finally {
- multiWriter.close();
- }
- } else {
- RenderedImage renderedImage = null;
- if (pageImagesItr.hasNext()) {
- renderedImage = (RenderedImage) pageImagesItr.next();
- }
- writer.writeImage(renderedImage, outputStream, writerParams);
- if (pageImagesItr.hasNext()) {
- BitmapRendererEventProducer eventProducer
- = BitmapRendererEventProducer.Provider.get(
- getUserAgent().getEventBroadcaster());
- eventProducer.stoppingAfterFirstPageNoFilename(this);
- }
- }
-
- // Cleaning
- outputStream.flush();
- clearViewportList();
- log.debug("TIFF encoding done.");
- }
-
- /** {@inheritDoc} */
- protected BufferedImage getBufferedImage(int bitmapWidth, int bitmapHeight) {
- return new BufferedImage(bitmapWidth, bitmapHeight, bufferedImageType);
- }
-
- /** Private inner class to lazy page rendering. */
- private class LazyPageImagesIterator implements Iterator {
- /** logging instance */
- private Log log;
-
- private int count;
-
- private int current = 0;
-
- /**
- * Main constructor
- * @param c number of pages to iterate over
- * @param log the logger to use (this is a hack so this compiles under JDK 1.3)
- */
- public LazyPageImagesIterator(int c, Log log) {
- count = c;
- this.log = log;
- }
-
- public boolean hasNext() {
- return current < count;
- }
-
- public Object next() {
- if (log.isDebugEnabled()) {
- log.debug("[" + (current + 1) + "]");
- }
-
- // Renders current page as image
- BufferedImage pageImage = null;
- try {
- pageImage = getPageImage(current++);
- } catch (FOPException e) {
- throw new NoSuchElementException(e.getMessage());
- }
-
- if (COMPRESSION_CCITT_T4.equalsIgnoreCase(writerParams.getCompressionMethod())
- || COMPRESSION_CCITT_T6.equalsIgnoreCase(writerParams.getCompressionMethod())) {
- return pageImage;
- } else {
- //Decorate the image with a packed sample model for encoding by the codec
- SinglePixelPackedSampleModel sppsm;
- sppsm = (SinglePixelPackedSampleModel)pageImage.getSampleModel();
-
- int bands = sppsm.getNumBands();
- int[] off = new int[bands];
- int w = pageImage.getWidth();
- int h = pageImage.getHeight();
- for (int i = 0; i < bands; i++) {
- off[i] = i;
- }
- SampleModel sm = new PixelInterleavedSampleModel(
- DataBuffer.TYPE_BYTE, w, h, bands, w * bands, off);
-
- RenderedImage rimg = new FormatRed(GraphicsUtil.wrap(pageImage), sm);
- return rimg;
- }
- }
-
- public void remove() {
- throw new UnsupportedOperationException(
- "Method 'remove' is not supported.");
- }
- }
-
- /** @param bufferedImageType an image type */
- public void setBufferedImageType(int bufferedImageType) {
- this.bufferedImageType = bufferedImageType;
- }
-
- /** @return image writer parameters */
- public ImageWriterParams getWriterParams() {
- return writerParams;
- }
- }
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