Add an example JPEG2000 to PDF script.

1 files changed, 39 insertions, 0 deletions

diff --git a/docs/examples/jpx-to-pdf.js b/docs/examples/jpx-to-pdf.js
new file mode 100644
index 00000000..ee95ab30
--- /dev/null
+++ b/docs/examples/jpx-to-pdf.js
@@ -0,0 +1,39 @@
+// Script to create a PDF from JPEG2000 images.
+// Each image be put on its own page.
+// This script can be used to create files to test JPEG2000 support in PDF viewers.
+
+var doc = new PDFDocument();
+
+function addJPXImage(filename, w, h) {
+	return doc.addRawStream(
+		readFile(filename),
+		{
+			Type: "XObject",
+			Subtype: "Image",
+			Width: w,
+			Height: h,
+			Filter: "JPXDecode"
+		}
+	);
+}
+
+function addJPXPage(filename) {
+	var image = new Image(filename);
+	var w = image.getWidth();
+	var h = image.getHeight();
+	var mediabox = [0, 0, w, h];
+	var resources = { XObject: { I: addJPXImage(filename, w, h) } };
+	var contents = "q " + w + " 0 0 " + h + " 0 0 cm /I Do Q";
+	doc.insertPage(-1, doc.addPage(mediabox, 0, resources, contents));
+}
+
+var i, n = argv.length;
+if (n < 2) {
+	print("usage: mutool run jpx-to-pdf.js file.jpx ...");
+	quit();
+}
+for (i = 1; i < n; ++i) {
+	addJPXPage(argv[i]);
+}
+
+doc.save("out.pdf", "ascii,pretty");