Hello,
As I understand the PDF Specifications it's possible to directly include a JPEG file in a PDF.
It has to be encapsulated into a XObject and its filter must be set to DCTDecode.
(Even the JPEG header and such get stored in the final PDF)
So I wrote a litte program using the Adobe PDFL that create such file, basically it reads the entire JPEG file using a ASStm [ASFileStmRdOpen()] which is called by the [PDEImageCreate()].
I set in the Create() call that the stream is encoded.
Of course it creates alongside this the appropriate PDEColorSpace.
In the end all of this works in RGB I get the intended output.
But when I use CMYK JPEG file, the PDF I get is the negative of the image (as if I applied Adjustements->Invert in Photoshop). Did I miss something for CMYK files ?
Below links to download the test files & the result :
- CMYK (JPG) http://dl.free.fr/h2jecWBpj (PDF) http://dl.free.fr/gv5zecOEp
- RGB (JPG) http://dl.free.fr/nccbrL1mg (PDF) http://dl.free.fr/ho5kqmkD4
Thanks for the help.
Message was edited by: blvd4
