Printing an image to a Postscript printer generates empty sheet

[zdohnal]

Hi,

I was dealing with CUPS upstream test suite which we run in Fedora 38 (libcupsfilters 2.0b4) and found out an empty sheet of paper is printed out if a user has a postscript driver and wants to print a JPEG file.

Input file: testfile.jpg.txt
Job log: job_log.txt
PPD file: north-fiile.ppd.txt
Output file: ps.txt

The suspicious lines in logs are:

Mar 14 16:53:52 fedora cupsd[24030]: [Job 56] cfFilterImageToPDF: Before scaling: xppi=0, yppi=0, zoom=1.00
Mar 14 16:53:52 fedora cupsd[24030]: [Job 56] cfFilterImageToPDF: Before scaling: xprint=0.0, yprint=0.0
Mar 14 16:53:52 fedora cupsd[24030]: [Job 56] cfFilterImageToPDF: cfImageGetXPPI(img) = 72, cfImageGetYPPI(img) = 72, aspect = 1.000000
Mar 14 16:53:52 fedora cupsd[24030]: [Job 56] cfFilterImageToPDF: Portrait size is 0.00 x 0.00 inches
Mar 14 16:53:52 fedora cupsd[24030]: [Job 56] cfFilterImageToPDF: Landscape size is 0.00 x 0.00 inches

It looks like the image is loaded incorrectly...

Would you mind looking into it?

[zdohnal]

Updating the title - printing any image (.jpeg, .png, .tiff) to a Postscript-only printer is affected - I'm debugging it now, so far cfRasterPrepareHeader() returns only zeros for page size, so the problem origins from there.

[zdohnal]

Actually the problem happens in libppd - we don't create media-col attribute if there is no PageSize or media. Transferring to libppd.