Files
OCRmyPDF/PDFA_def.ps
T
Jim Barlow 564fb7a87e Support Ghostscript 9.14's new color conversion engine (not portable)
The flag -dUseCIEColor is now deprecated, as it invokes the old engine
which introduces color errors. The new engine requires a PDF/A file
header with hardcoded location of a ICC profile to use, now included in
the project. Portable iterations should generate a PDFA_def.ps based on
the target system; for now OS X with homebrew is presumed.

I have selected sRGB since scanners tend to capture RGB and printing
is not a major consideration for PDF/A.

Also note all file paths given to gs must be absolute. May its creators
be forever haunted for their failure to document this unexpected quirk.
2015-02-09 15:33:49 -08:00

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1.3 KiB
PostScript

%!
% This is a sample prefix file for creating a PDF/A document.
% Feel free to modify entries marked with "Customize".
% This assumes an ICC profile to reside in the file (ISO Coated sb.icc),
% unless the user modifies the corresponding line below.
% Define entries in the document Info dictionary :
/ICCProfile (/usr/local/share/ghostscript/iccprofiles/srgb.icc) % Customise
def
[ /Title (PDF) % Customise
/DOCINFO pdfmark
% Define an ICC profile :
[/_objdef {icc_PDFA} /type /stream /OBJ pdfmark
[{icc_PDFA}
<<
/N currentpagedevice /ProcessColorModel known {
currentpagedevice /ProcessColorModel get dup /DeviceGray eq
{pop 1} {
/DeviceRGB eq
{3}{4} ifelse
} ifelse
} {
(ERROR, unable to determine ProcessColorModel) == flush
} ifelse
>> /PUT pdfmark
[{icc_PDFA} ICCProfile (r) file /PUT pdfmark
% Define the output intent dictionary :
[/_objdef {OutputIntent_PDFA} /type /dict /OBJ pdfmark
[{OutputIntent_PDFA} <<
/Type /OutputIntent % Must be so (the standard requires).
/S /GTS_PDFA1 % Must be so (the standard requires).
/DestOutputProfile {icc_PDFA} % Must be so (see above).
/OutputConditionIdentifier (sRGB) % Customize
>> /PUT pdfmark
[{Catalog} <</OutputIntents [ {OutputIntent_PDFA} ]>> /PUT pdfmark