Why would you want to write a completely new PDF library when there are
NUMEROUS ones out there – including the iText library whose mailing list you
posted on…
Leonard
From: New Developer <[email protected]<mailto:[email protected]>>
Reply-To: Post here
<[email protected]<mailto:[email protected]>>
Date: Sat, 1 Oct 2011 08:16:17 -0700
To: Post here
<[email protected]<mailto:[email protected]>>
Subject: [iText-questions] Seeing guidance on PDF images
I'm trying to develop a mini PDF library and I'm stuck on getting images into
the PDF
using to read just a simple (camera generated picture) jpg file
Bitmap bmp;
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bmp.compress(CompressFormat.JPEG, 100 , bos);
How do I get this into the PDF format ?
currently this is what I have
"<< /Type /XObject \n" +
" /Subtype /Image \n" +
" /Width " + bmp.getWidth() + " \n" +
" /Height " + bmp.getHeight() + " \n" +
" /ColorSpace /DeviceRGB \n" +
" /BitsPerComponent 8 \n" +
" /Length " + bos.size() + " \n" +
" /Filter /ASCIIHexDecode \n" +
">> \n" +
"stream \n" +
bos.toString() + "\n" +
"endstream \n" +
"endobj \n\n";
1) I think my /Filter is wrong not sure what to use ?
2) The test image is 341 x 256 => 87296 bos.size() returns 84156 and
yet when I count the number of bytes between stream and endstream in the
generated .pdf file I get 78814 ? What causes these changes ?
3) What is the /Filter equivalence for CompressFormat.JPEG and
CompressFormat.PNG ?
Please any help to get from the bitmap to a displayed image in the PDF file
would be greatly appreciated.
Thanks in Advance
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