resources/images
Print information about all images in the document.
Download Java Code Show Output Show Input PDF
import com.pdflib.pCOS;
import com.pdflib.pCOSException;
import com.pdflib.cookbook.pcos.pcos_cookbook_example;
/**
* Print information about all images in the document.
* <p>
* Required software: pCOS interface 3 (pCOS 3.x, PDFlib+PDI/PPS 7.x, TET 2.2,
* PLOP 3.x) <br>
* Required data: PDF document
*
* @version $Id: images.java,v 1.9 2010/09/29 16:38:06 tm Exp $
*/
public class images extends pcos_cookbook_example {
/* This is where the data files are. Adjust as necessary. */
private final static String SEARCH_PATH = "../input";
public void example_code(pCOS p, String filename) throws pCOSException,
/* Open the PDF document */
int doc = p.open_document(filename, "");
if (doc == -1)
throw new Exception("Error: " + p.get_errmsg());
System.out.println("File name: " + p.pcos_get_string(doc, "filename"));
int imagecount = (int) p.pcos_get_number(doc, "length:images");
System.out.println("Image count: " + imagecount);
for (int image = 0; image < imagecount; image += 1) {
System.out.print(" Image " + (image + 1) + ", ");
String objtype = p.pcos_get_string(doc, "type:images[" + image
+ "]/Filter");
if (objtype.equals("name")) {
String filter = p.pcos_get_string(doc, "images[" + image
+ "]/Filter");
System.out.print("Filter=" + filter);
}
else if (objtype.equals("array")) {
String filter = p.pcos_get_string(doc, "images[" + image
+ "]/Filter[0]");
System.out.print("Filter=" + filter);
int filtercount = (int) p.pcos_get_number(doc, "length:images["
+ image + "]/Filter");
for (int f = 1; f < filtercount; f++) {
filter = p.pcos_get_string(doc, "images[" + image
+ "]/Filter[" + f + "]");
System.out.print("+" + filter);
}
}
System.out.print(", "
+ (int) p.pcos_get_number(doc, "images[" + image + "]/Width")
+ "x"
+ (int) p.pcos_get_number(doc, "images[" + image + "]/Height")
+ ", ");
System.out.print(
(int) p.pcos_get_number(doc, "images[" + image + "]/bpc")
+ " bits per component, ");
check_colorspace(p, doc, image);
System.out.println();
}
p.close_document(doc);
}
private static void check_colorspace(pCOS p, int doc, int image)
throws pCOSException {
String objtype = p.pcos_get_string(doc, "type:images[" + image
+ "]/ColorSpace");
if (objtype.equals("name")) {
System.out.print(p.pcos_get_string(doc, "images[" + image
+ "]/ColorSpace"));
}
else if (objtype.equals("array")) {
String cs = p.pcos_get_string(doc, "images[" + image
+ "]/ColorSpace[0]");
System.out.print(cs);
if (cs.equals("Indexed") || cs.equals("Separation")) {
System.out.print(" "
+ p.pcos_get_string(doc, "images[" + image
+ "]/ColorSpace[1]"));
}
}
else if (objtype.equals("null")) {
System.out.print("ImageMask");
}
else {
System.out.print("(complex ColorSpace)");
}
}
public images(String[] argv, String readable_name, String search_path,
String full_rcs_file_name, String revision) {
super(argv, readable_name, search_path, full_rcs_file_name, revision);
}
public static void main(String argv[]) {
images example = new images(argv, "Image XObjects", SEARCH_PATH,
"$RCSfile: images.java,v $", "$Revision: 1.9 $");
example.execute();
}
}