[Poppler-bugs] [Bug 27068] Use ICC profiles in PS output

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=27068

Adrian Johnson <ajohnson at redneon.com> changed:

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--- Comment #3 from Adrian Johnson <ajohnson at redneon.com> ---
Created attachment 107770
  --> https://bugs.freedesktop.org/attachment.cgi?id=107770&action=edit
ps: emit icc colorspace

I had forgotten that I never finished this patch. So four years later here is
the updated patch.

The changes are:
- support both LCMS 1 and 2

- Improve performance. Instead of caching what I did was assign each ICC color 
space in the PS output to an /ICCBased-x-y-z name and ensure each one is only
emitted once. The performance of the generation is improved as each color space
is only emitted once. The file size increase is kept to a minimum as the
/ICCBased-x-y-z name is used each time a color space is set instead of emitting
the entire CSA.

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