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Topic: RE: Need help RunLengthDecode Filter
Conf: (P-PDF) Developers, Msg: 57779
From: skajan
Date: 5/29/2002 05:28 PM

Thanks for your quick reply Aandi

Shan

-----Original Message-----
From: p-pdf-developer Listmanager
[mailto:listmanager@forum.planetpdf.com]
Sent: 11 October 2001 14:56
To: Recipients of 'p-pdf-developer' suppressed
Subject: Need help RunLengthDecode Filter


From: "Aandi"

--- Planet PDF Forum | http://forum.planetpdf.com ----

The last paragraph on page 49 of the PDF Specification, 2nd edition, has the
complete specification of RunLengthDecode. It should be possible to
implement this in any language that can read a stream of unsigned bytes from
the file. (Always remember that a single file may have multiple filters; you
need to be able to handle a list of filters).

As an example of the three types of length byte, here is a simple sample.
Each byte is shown in decimal.

1 100 101 254 107 128

decodes to

100 101 107 107 107 (end)

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