contrib/tiledTranscoder/TiledImageTranscoder.java

/*

   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.

 */
package org.apache.batik.apps.tiledTranscoder;

import java.awt.image.renderable.*;
import java.awt.image.*;
import java.io.*;

import org.apache.batik.transcoder.*;
import org.apache.batik.transcoder.image.*;

import org.apache.batik.ext.awt.image.*;
import org.apache.batik.ext.awt.image.codec.*;
import org.apache.batik.ext.awt.image.codec.tiff.*;
import org.apache.batik.ext.awt.image.rendered.*;
import org.apache.batik.ext.awt.image.renderable.*;

import org.w3c.dom.Document;

public class TiledImageTranscoder extends SVGAbstractTranscoder {
    
    /**
     * Constructs a new <code>ImageTranscoder</code>.
     */
    protected TiledImageTranscoder() {
    }


    /**
     * Transcodes the specified Document as an image in the specified output.
     *
     * @param document the document to transcode
     * @param uri the uri of the document or null if any
     * @param output the ouput where to transcode
     * @exception TranscoderException if an error occured while transcoding
     */
    protected void transcode(Document document,
                             String uri,
                             TranscoderOutput output)
            throws TranscoderException {

        // Sets up root, curTxf & curAoi
        super.transcode(document, uri, output);

        Filter f = this.root.getGraphicsNodeRable(true);
        
        RenderContext rc = new RenderContext(curTxf, null, null);
        RenderedImage img = f.createRendering(rc);

        // prepare the image to be painted
        int w = img.getWidth();
        int h = img.getHeight();

        try {
            int bands = img.getSampleModel().getNumBands();
            int [] off = new int[bands];
            for (int i=0; i<bands; i++)
                off[i] = i;
            SampleModel sm = new PixelInterleavedSampleModel
                (DataBuffer.TYPE_BYTE, 
                 w, (100000+w-1)/w, 
                 bands, w*bands, off);
            
            RenderedImage rimg = new FormatRed(GraphicsUtil.wrap(img), sm);

            TIFFImageEncoder enc = new TIFFImageEncoder
                (output.getOutputStream(), null);
            enc.encode(rimg);
        } catch (IOException ioe) {
            ioe.printStackTrace();
        }
    }


    public static void main (String [] args) {
        try {
            FileOutputStream fos = new FileOutputStream(args[1]);
            TiledImageTranscoder tit = new TiledImageTranscoder();
            tit.addTranscodingHint(KEY_WIDTH, Float.valueOf(10240));
            tit.transcode(new TranscoderInput("file:" + args[0]), 
                          new TranscoderOutput(fos));
        } catch (IOException ioe) {
            ioe.printStackTrace();
        } catch (TranscoderException te) {
            te.printStackTrace();
        }
    }
}