[NTG-pdftex] [ pdftex-Patches-453 ] Object Streams for PDF-1.5

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Tue Jan 17 22:58:15 CET 2006


Patches item #453, was opened at 2005-11-26 18:05
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Category: Object Streams
Group: v1.30.0
Status: Open
>Resolution: Accepted
Priority: 5
Submitted By: Hartmut Henkel (hhenkel)
>Assigned to: Martin Schröder (oneiros)
Summary: Object Streams for PDF-1.5

Initial Comment:
Rough early patch, work in progress, produces PDF-1.5
object streams and cross reference streams. With the
patch, and enabled by \pdfminorversion=5, and with
luck, pdfetex produces e. g. from its WEB source a PDF
file with size 5.97 MByte instead of 11.2 MByte without
object streams.

Regards, Hartmut

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Comment By: Hartmut Henkel (hhenkel)
Date: 2006-01-07 01:06

Message:
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objstream.ch updated: 1. object stream statistics added. 2.
maximum allocation values are added in brackets. Example:

PDF statistics:
 630 PDF objects out of 1000 (max. 8388607)
 577 compressed objects within 6 object streams
 113 named destinations out of 1000 (max. 131072)
 8353 words of extra memory for PDF output out of 10000
(max. 10000000)

Regards, Hartmut

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Comment By: Hartmut Henkel (hhenkel)
Date: 2005-12-26 20:21

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Patch update. Object stream writing is now controlled by
primitive \pdfobjcompresslevel = 0...3 (/pdfobjectstreams
primitive removed). 0 = no object streams at all, 1 =
compress objects excluding the ones from embedded PDF files
(for handling of problematic PDF files) and /Info dictionary
(for legibility), 2 = also compress objects from embedded
PDF files, but leave /Info uncompressed, 3 = compress
everything.

Testing welcome.

Regards, Hartmut

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