From owner-tiff@olympiakos.com  Mon Nov 29 19:02:51 1999
Received: (from uucp@localhost)
	by smtp02.oce.nl (8.9.3/8.9.3) id TAA21863
	for rvdt@smtp02; Mon, 29 Nov 1999 19:02:51 +0100 (MET)
>Received: from gate7.olympiakos.com ([207.176.88.85])
	by oce.nl (8.9.0/8.9.0) with ESMTP id SAA00443;
	Mon, 29 Nov 1999 18:59:29 +0100 (MET)
Received: from localhost (daemon@localhost)
	by gate7.olympiakos.com (8.9.3/8.9.3) with SMTP id MAA08822;
	Mon, 29 Nov 1999 12:58:40 -0500
Received: by gate7.olympiakos.com (bulk_mailer v1.9); Mon, 29 Nov 1999 12:58:20 -0500
Received: (from majordom@localhost)
	by gate7.olympiakos.com (8.9.3/8.9.3) id MAA08802
	for tiff-outgoing; Mon, 29 Nov 1999 12:58:20 -0500
X-Authentication-Warning: gate7.olympiakos.com: majordom set sender to owner-tiff@olympiakos.com using -f
Received: from deborah.paradise.net.nz (deborah.paradise.net.nz [203.96.152.32])
	by gate7.olympiakos.com (8.9.3/8.9.3) with ESMTP id MAA08799
	for <tiff@olympiakos.com>; Mon, 29 Nov 1999 12:58:13 -0500
Received: from onstreamserver (203-96-154-158.tnt7.paradise.net.nz [203.96.154.158])
	by deborah.paradise.net.nz (8.9.3) with SMTP id GAA17552;
	Tue, 30 Nov 1999 06:57:17 +1300
Message-ID: <002201bf3a93$76bd8a80$0077fea9@onstreamserver>
From: "David" <david.kelly@onstreamsystems.com>
To: "Frank Warmerdam" <warmerda@home.com>,
        "TIFF Mailing List" <tiff@olympiakos.com>
References: <38428BE4.34C3C18D@home.com>
Subject: Re: Handling  2-4 GB TIFF Files
Date: Tue, 30 Nov 1999 06:59:03 +1300
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Priority: 3
X-MSMail-Priority: Normal
X-Mailer: Microsoft Outlook Express 5.00.2615.200
X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2615.200
Sender: owner-tiff@olympiakos.com
Content-Type: text/plain;
	charset="iso-8859-1"

Dear Frank,

For the last few years, we have been writing a Windows32 Tiff handling
system (Trapeze) designed to handle any legal TIFF File. It may not be what
you want, but we would be keen  to work with you in achieving your aim if
you're interested. Our Test Tiff files are 20,000 pages long, and we claim
to be able to store maps and print them to scale of over 20 miles in length.
It would be of assistance to us, to find out if we can live up to our
claims!  We think we understand TIFF writing and reading as well as anyone
in the world. We don't use libraries of any sort (not event the C library as
it has bugs that prevent the handling of large files itself!) If you want to
have a preliminary look, Trapeze can be downloaded from
www.onstreamsystems.com.
I hope this is of some help to you.
Yours faithfully
David Kelly


----- Original Message -----
From: Frank Warmerdam <warmerda@home.com>
To: TIFF Mailing List <tiff@olympiakos.com>
Sent: Tuesday, November 30, 1999 3:21 AM
Subject: 2-4 GB TIFF Files


>
> Folks,
>
> On behalf of a client I am looking into generation of TIFF files in the
> 2-4GB range.  My first shock was to find that ext2fs on Linux doesn't
> support files larger than 2GB.  My second shock was to find that the
> toff_t type in tiffio.h (used for seeking for instance) is int32, a signed
> 32 bit integer, not unsigned as I would have assumed.
>
> While TIFF format is clearly limited to at most 4GB in a file, I had
assumed
> producing and consuming files in the 2-4GB range would not be particularly
> difficult.  Has anyone done this with libtiff?  Were changes to libtiff
> required?
>
> Best regards,
>
> ---------------------------------------+----------------------------------
----
> I set the clouds in motion - turned up | Frank Warmerdam,
warmerda@home.com
> light and sound - activate the windows | http://members.home.com/warmerda
> and watch the world go round - Rush    | Geospatial Programmer for Rent
>


