pdfa/images_to_pdfa2b
Convert grayscale, CMYK or RGB image files in TIFF or JPEG format to PDF/A-2b, taking care of color space issues.
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<?php
/*
* Images to PDF/A:
* Convert grayscale, CMYK or RGB image files in TIFF or JPEG formats to
* PDF/A-2b, taking care of color space issues.
*
* Required software: PDFlib/PDFlib+PDI/PPS 9
* Required data: image files
*/
/* This is where the data files are. Adjust as necessary. */
$searchpath = dirname(__FILE__,3)."/input";
$outfile = "";
$title = "Images to PDF/A";
$imagefileRGB = "nesrin.jpg";
$imagefileCMYK = "kraxi_header.tif";
$imagefileGray = "nesrin_gray.jpg";
try {
$p = new PDFlib();
$p->set_option("searchpath={" . $searchpath . "}");
/* This means we must check return values of load_font() etc. */
$p->set_option("errorpolicy=return");
/* Output all contents conforming to PDF/A-2b */
if ($p->begin_document($outfile, "pdfa=PDF/A-2b") == 0)
throw new Exception("Error: " . $p->get_errmsg());
$p->set_info("Creator", "PDFlib Cookbook");
$p->set_info("Title", $title);
/* 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.
*/
if( $p->load_iccprofile("sRGB", "usage=outputintent") == 0)
{
throw new Exception("Error: " . p.get_errmsg() ."<br/>\n" .
"See www.pdflib.com for output intent ICC profiles.");
}
/* Load an ICC profile for CMYK images */
$icc = $p->load_iccprofile("ISOcoated_v2_eci.icc", "");
if ($icc == 0)
throw new Exception("Error: " . $p->get_errmsg());
$p->begin_page_ext(0, 0, "width=a4.width height=a4.height");
/* 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 == 0)
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 == 0)
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 == 0)
throw new Exception("Error: " . $p->get_errmsg());
$p->fit_image($image, 100, 80, "");
$p->close_image($image);
$p->end_page_ext("");
$p->end_document("");
$buf = $p->get_buffer();
$len = strlen($buf);
header("Content-type: application/pdf");
header("Content-Length: $len");
header("Content-Disposition: inline; filename=images_to_pdfa2b.pdf");
print $buf;
}
catch (PDFlibException $e) {
echo("PDFlib exception occurred:\n" .
"[" . $e->get_errnum() . "] " . $e->get_apiname() .
": " . $e->get_errmsg() . "\n");
exit(1);
}
catch (Throwable $e) {
echo("PHP exception occurred: " . $e->getMessage() . "\n");
exit(1);
}
$p = 0;
?>