pdfa/images_to_pdfa
Convert grayscale, CMYK or RGB image files in TIFF or JPEG formats to PDF/A-1b, taking care of color space issues.
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* 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.pdfa;
import com.pdflib.pdflib;
import com.pdflib.PDFlibException;
/**
* @author stm
*
*/
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");
check_pdflib_version(p, 7, 0, 4);
/* 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: 1.1.2.2 $");
/*
* 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();
}
}
}
/**
* Check whether the required minimum PDFlib version is available
*
* @param p
* the pdflib object
* @param major
* PDFlib major version number
* @param minor
* PDFlib minor version number
* @param revision
* PDFlib revision number
*
* @throws PDFlibException
* @throws Exception
*/
private static void check_pdflib_version(pdflib p, int major, int minor,
int revision) throws PDFlibException, Exception {
final int actualMajor = (int) p.get_value("major", 0);
final int actualMinor = (int) p.get_value("minor", 0);
final int actualRevision = (int) p.get_value("revision", 0);
/* Required minimum PDFlib version */
final int requiredVersion = major * 100 + minor * 10 + revision;
final int actualVersion = actualMajor * 100 + actualMinor * 10
+ actualRevision;
if (actualVersion < requiredVersion) {
throw new Exception("Error: PDFlib " + major + "." + minor + "."
+ revision + " or above is required");
}
}
}