/* * Copyright 1999-2005 The Apache Software Foundation. * * Licensed 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 org.apache.avalon.framework.configuration.Configuration; import org.apache.avalon.framework.configuration.ConfigurationException; import org.apache.batik.ext.awt.image.GraphicsUtil; import org.apache.batik.ext.awt.image.codec.tiff.TIFFEncodeParam; import org.apache.batik.ext.awt.image.codec.tiff.TIFFField; import org.apache.batik.ext.awt.image.codec.tiff.TIFFImageDecoder; import org.apache.batik.ext.awt.image.codec.tiff.TIFFImageEncoder; import org.apache.batik.ext.awt.image.rendered.FormatRed; import org.apache.commons.logging.Log; import org.apache.fop.apps.FOPException; import org.apache.fop.render.java2d.Java2DRenderer; /** *
* 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: *
* This class actually does not render itself, instead it extends
* org.apache.fop.render.java2D.Java2DRenderer
and just encode
* rendering results into TIFF format using Batik's image codec
*/
public class TIFFRenderer extends Java2DRenderer {
/** The MIME type for tiff-Rendering */
public static final String MIME_TYPE = "image/tiff";
/** */
private TIFFEncodeParam renderParams;
private OutputStream outputStream;
/** @see org.apache.fop.render.AbstractRenderer */
public String getMimeType() {
return MIME_TYPE;
}
/** Creates TIFF renderer. */
public TIFFRenderer() {
renderParams = new TIFFEncodeParam();
//Default to packbits compression which is widely supported
renderParams.setCompression(TIFFEncodeParam.COMPRESSION_PACKBITS);
}
/**
* Configure the TIFF renderer. Get the configuration to be used for
* compression
* @see org.apache.avalon.framework.configuration.Configurable#configure(Configuration)
*/
public void configure(Configuration cfg) throws ConfigurationException {
//TODO Support output of monochrome bitmaps (fax-style)
String c = cfg.getChild("compression").getAttribute("value");
int comp = Integer.parseInt(c);
String name = null;
switch (comp) {
case TIFFEncodeParam.COMPRESSION_NONE:
name = "COMPRESSION_NONE";
break;
case TIFFEncodeParam.COMPRESSION_JPEG_TTN2:
name = "COMPRESSION_JPEG_TTN2";
break;
case TIFFEncodeParam.COMPRESSION_PACKBITS:
name = "COMPRESSION_PACKBITS";
break;
case TIFFEncodeParam.COMPRESSION_DEFLATE:
name = "COMPRESSION_DEFLATE";
break;
default:
log.info("TIFF compression not supported: " + comp);
return;
}
log.info("TIFF compression set to " + name);
}
/** @see org.apache.fop.render.Renderer#startRenderer(java.io.OutputStream) */
public void startRenderer(OutputStream outputStream) throws IOException {
this.outputStream = outputStream;
super.startRenderer(outputStream);
}
/** @see org.apache.fop.render.Renderer#stopRenderer() */
public void stopRenderer() throws IOException {
super.stopRenderer();
log.debug("Starting Tiff encoding ...");
//Set resolution
float pixSzMM = userAgent.getPixelUnitToMillimeter();
// num Pixs in 100 Meters
int numPix = (int)(((1000 * 100) / pixSzMM) + 0.5);
int denom = 100 * 100; // Centimeters per 100 Meters;
long [] rational = {numPix, denom};
TIFFField [] fields = {
new TIFFField(TIFFImageDecoder.TIFF_RESOLUTION_UNIT,
TIFFField.TIFF_SHORT, 1,
new char[] {(char)3}),
new TIFFField(TIFFImageDecoder.TIFF_X_RESOLUTION,
TIFFField.TIFF_RATIONAL, 1,
new long[][] {rational}),
new TIFFField(TIFFImageDecoder.TIFF_Y_RESOLUTION,
TIFFField.TIFF_RATIONAL, 1,
new long[][] {rational})
};
renderParams.setExtraFields(fields);
// Creates encoder
TIFFImageEncoder enc = new TIFFImageEncoder(outputStream, renderParams);
// Creates lazy iterator over generated page images
Iterator pageImagesItr = new LazyPageImagesIterator(getNumberOfPages(), log);
// The first image to be passed to enc
RenderedImage first = (RenderedImage) pageImagesItr.next();
// The other images are set to the renderParams
renderParams.setExtraImages(pageImagesItr);
// Start encoding
enc.encode(first);
// Cleaning
outputStream.flush();
clearViewportList();
log.debug("Tiff encoding done.");
}
/** 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() {
log.debug("[" + (current + 1) + "]");
// Renders current page as image
BufferedImage pageImage = null;
try {
pageImage = getPageImage(current++);
} catch (FOPException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
switch (renderParams.getCompression()) {
// These types of compression require a monochrome image
/* these compression types are not supported by the Batik codec
case TIFFEncodeParam.COMPRESSION_GROUP3_1D:
case TIFFEncodeParam.COMPRESSION_GROUP3_2D:
case TIFFEncodeParam.COMPRESSION_GROUP4:
BufferedImage faxImage = new BufferedImage(
pageImage.getWidth(), pageImage.getHeight(),
BufferedImage.TYPE_BYTE_BINARY);
faxImage.getGraphics().drawImage(pageImage, 0, 0, null);
return faxImage;*/
default:
//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.");
}
}
}