/* $Id: images_to_pdfa.java,v 1.6 2008/04/08 12:59:45 katja Exp $
 * Images to PDF/A:
 * Convert grayscale, CMYK or RGB image files in TIFF or JPEG formats to 
 * PDF/A-1b, taking care of color space issues.
 *
 * Required software: PDFlib/PDFlib+PDI/PPS 7
 * Required data: image files
 */
package com.pdflib.cookbook.pdflib.pdf_flavors;

import com.pdflib.pdflib;
import com.pdflib.PDFlibException;

public class images_to_pdfa
{
    public static void main (String argv[])
    {
    /* This is where the data files are. Adjust as necessary. */
    String searchpath = "../input";
    String outfile = "images_to_pdfa.pdf";
    String title = "Images to PDF/A";

    pdflib p = null;
    String imagefileRGB = "nesrin.jpg";
    String imagefileCMYK = "kraxi_header.tif";
    String imagefileGray = "nesrin_gray.jpg";

    int image, icc;

    try {
        p = new pdflib();

        p.set_parameter("SearchPath", searchpath);

        /* This means we must check return values of load_font() etc. */
        p.set_parameter("errorpolicy", "return");

        /* Output all contents conforming to PDF/A-1b */
        if (p.begin_document(outfile, "pdfa=PDF/A-1b:2005") == -1)
            throw new Exception("Error: " + p.get_errmsg());
        
        p.set_info("Creator", "PDFlib Cookbook");
        p.set_info("Title", title + " $Revision: 1.6 $");

        /* Use sRGB as output intent since it allows the color spaces ICC-based,
         * grayscale, and RGB. CMYK images must be tagged with a suitable CMYK
         * ICC profile.
         */
        p.load_iccprofile("sRGB", "usage=outputintent");
        
        /* Load an ICC profile for CMYK images */
        icc = p.load_iccprofile("ISOcoated.icc", "");
        if (icc == -1)
            throw new Exception("Error: " + p.get_errmsg());

        p.begin_page_ext(595, 842, "");

        /* We can use an RGB image without any further options since we
         * supplied an RGB output intent profile.
         */
        image = p.load_image("auto", imagefileRGB, "");
        if (image == -1)
            throw new Exception("Error: " + p.get_errmsg());

        p.fit_image(image, 100, 550, "scale=0.5");
        p.close_image(image);
        
        /* Similarly, we can use a grayscale image without any further options
         * since we supplied an RGB output intent profile.
         */
        image = p.load_image("auto", imagefileGray, "");
        if (image == -1)
            throw new Exception("Error: " + p.get_errmsg());

        p.fit_image(image, 100, 250, "scale=0.5");
        p.close_image(image);
        
        /* For CMYK images we explicitly assign a CMYK ICC profile */
        image = p.load_image("auto", imagefileCMYK, "iccprofile=" + icc);
        if (image == -1)
            throw new Exception("Error: " + p.get_errmsg());

        p.fit_image(image, 100, 80, "");
        p.close_image(image);

        p.end_page_ext("");

        p.end_document("");

        } catch (PDFlibException e){
            System.err.print("PDFlib exception occurred:\n");
            System.err.print("[" + e.get_errnum() + "] " + e.get_apiname() +
                ": " + e.get_errmsg() + "\n");
        } catch (Exception e) {
            System.err.println(e.getMessage());
        } finally {
            if (p != null) {
                p.delete();
            }
        }
    }
}