Create a PDFPage instance from Quartz-format image

FROM : Scott.D.R
DATE : Tue Mar 04 00:06:27 2008

Hi everyone.
As the developer documents mention, we can create a PDFPage from a 
NSImage. After did some experiments, I found it was very handy to do 
some tasks. Thanks to Apple.

However, I want to know whether it is possible to create the PDFPage 
instance directly from the CGImage, CIImage and so on? I know we can 
draw these image object into the PDFContext to generate a PDF file. 
But that isn't what I want. And what is more, I want to do that 
"directly", that is, without any time-and-space-consuming conversion 
between the NSImage object and Quartz image objects.

Thank you very much for any reply.

Best regards.