import java.io.*;
import java.util.*;
import java.awt.image.*;
import java.awt.geom.*;
import java.awt.*;
import javax.media.jai.*;
import com.sun.media.jai.codec.*;
import org.faceless.pdf2.*;

// Quick and dirty example showing how to convert a PDF
// to a TIFF class F file.
//
// Usage: java PDFToClassF file.pdf
// Creates a file called "fax.tif"
//
public class PDFToClassF {

    static final float dpix = 204, dpiy = 196;

    public static void main(String[] args) throws Exception {
        PDF pdf = new PDF(new PDFReader(new File(args[0])));
        PDFParser parser = new PDFParser(pdf);

        byte[] b = new byte[] { -1, 0 };
        ColorModel model = new IndexColorModel(1, 2, b, b, b);
        BufferedImage[] images = new BufferedImage[pdf.getNumberOfPages()];

        for (int i=0;i<images.length;i++) {
            PDFPage page = pdf.getPage(i);
            PagePainter painter = parser.getPagePainter(i);
            int w = Math.round(page.getWidth() * dpix / 72);
            int h = Math.round(page.getHeight() * dpiy / 72);
            float[] box = page.getBox("ViewBox");

            WritableRaster raster = Raster.createPackedRaster(DataBuffer.TYPE_BYTE, w, h, 1, 1, null);
            images[i] = new BufferedImage(model, raster, false, null);
            Graphics2D graphics = (Graphics2D)images[i].createGraphics();
            // You might want to test the following two to see if they make any
            // appreciable difference in terms of speed or quality.
            graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_DEFAULT);
            graphics.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_DEFAULT);
            float dpi = (float)Math.max(dpix, dpiy);
            if (dpix!=dpiy) {
                graphics.transform(new AffineTransform(dpix/dpi, 0, 0, dpiy/dpi, 0, 0));
            }
            painter.drawSubImage(graphics, box[0], box[1], box[2], box[3], dpi);
            graphics.dispose();
        }

        FileOutputStream out = new FileOutputStream("fax.tif");
        TIFFEncodeParam param = new TIFFEncodeParam();
        param.setCompression(TIFFEncodeParam.COMPRESSION_GROUP3_2D);
	TIFFField xres = new TIFFField(0x11A, TIFFField.TIFF_RATIONAL, 1, new long[][]{{ (long)dpix, 1 }});
	TIFFField yres = new TIFFField(0x11B, TIFFField.TIFF_RATIONAL, 1, new long[][]{{ (long)dpiy, 1 }});
	param.setExtraFields(new TIFFField[] { xres, yres });
        ImageEncoder encoder = ImageCodec.createImageEncoder("TIFF", out, param);
	if (images.length > 1) {
            param.setExtraImages(Arrays.asList(images).subList(1, images.length).iterator());
	}
        encoder.encode(images[0]);
        out.close();
    }
}