1074222 - CMYK Jpegs embedded in PDF show the wrong colours in firefox pdf preview.

Status: RESOLVED FIXED

(Firefox :: PDF Viewer, defect)

Description

[Robin Becker]

Attachment: screenshots.GIF upper is Firefox-32.03, lower is Acrobat

User Agent: Mozilla/5.0 (Windows NT 5.1; rv:32.0) Gecko/20100101 Firefox/32.0
Build ID: 20140923175406

Steps to reproduce:

I created a PDF using ReportLab with an embedded CMYK Jpeg.


Actual results:

When viewed in firefox preview the colours were wrong. See screenshots upper part. I suspect Firefox is ignoring a /Decode [ 1 0 1 0 1 0 1 0] command in the PDF.


Expected results:

The acrobat reader shows the correct colours see screenshots lower part

Comment 1

[Robin Becker]

Attachment: bad2.pdf the PDF that I used as a test

This PDF contains the following startup for the image 5 0 obj
<< /BitsPerComponent 8 /ColorSpace /DeviceCMYK /Decode [ 1 0 1 0 1 0 1 0 ] /Filter [ /ASCII85Decode /DCTDecode ] /Height 100 /Length 15796 
  /Subtype /Image /Type /XObject /Width 100 >>

If the /Decode [ 1 0 1 0 1 0 1 0 ] is replaced with blanks ie don't reverse the colour values then Acrobat also shows the wrong colours.

Comment 2

[Brendan Dahl [:bdahl]]

This looks fine on FF33 for me. Could you confirm with an updated version?

Comment 3

[Loic]

Working range: http://hg.mozilla.org/mozilla-central/pushloghtml?fromchange=bb35d1b73634&tochange=37f08ddaea48
Fixed by Bug 1025878 - Update pdf.js to version 1.0.370. r=yury

Comment 4

[Robin Becker]

I confirm I don't see this reversal on FF33 Beta and that the PDF preview does obey the /Decode array properly. Thanks for the fix.