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From: Levi Wilson <levi@leviwilson.com>
Date: Mon, 16 Mar 2020 13:56:37 -0400
Message-ID: <CACQjWJ=Mj_Qu434E56c8qxiMoxrATskVc13pFWzF1WRBXOSOPQ@mail.gmail.com>
To: tiff@lists.osgeo.org
Subject: [Tiff] Old-Style JPEG Support
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I'm having trouble working with some TIFF images that have the "Old JPEG
Support" compression.

The tiffsplit package dumps the following message when I try to use it:

./tools/tiffsplit old-style-jpeg.tif
TIFFReadDirectory: Warning, Unknown field with tag 32931 (0x80a3)
encountered.
TIFFReadDirectory: Warning, Unknown field with tag 32934 (0x80a6)
encountered.
TIFFReadRawStrip: Compression scheme does not support access to raw
uncompressed data.

At first I'd assumed that it wasn't compiled with it, so I tried building
it myself. When ./configure is ran (ubuntu) I see the following output:

 Support for external codecs:
  ZLIB support:                       yes
  Pixar log-format algorithm:         yes
  JPEG support:                       yes
  Old JPEG support:                   yes
  JPEG 8/12 bit dual mode:            no
  ISO JBIG support:                   yes
  LZMA2 support:                      yes
  ZSTD support:                       no
  WEBP support:                       no

So it looks like it should be available, but it isn't able to tiffsplit.

On a Windows subsystem, I downloaded the binaries / dependencies from the
GnuWin32 project and out of the gate it was able to tiffsplit the same
image (with some warnings, but it still was able to work with it).

My question is: how can I get something compiled on ubuntu to get a version
of tiffsplit that can better work with these files that I'm having trouble
with?

Thanks in advance,

Levi

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<div dir=3D"ltr"><div class=3D"gmail-gs" style=3D"margin:0px;padding:0px 0p=
x 20px;width:1487px;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-ser=
if;font-size:medium"><div class=3D"gmail-"><div id=3D"gmail-:246" class=3D"=
gmail-ii gmail-gt" style=3D"font-size:0.875rem;direction:ltr;margin:8px 0px=
 0px;padding:0px"><div id=3D"gmail-:245" class=3D"gmail-a3s gmail-aXjCH" st=
yle=3D"overflow:hidden;font-variant-numeric:normal;font-variant-east-asian:=
normal;font-stretch:normal;font-size:small;line-height:1.5;font-family:Aria=
l,Helvetica,sans-serif"><div dir=3D"ltr">I&#39;m having trouble working wit=
h some TIFF images that have the &quot;Old JPEG Support&quot; compression.<=
div><br></div><div>The tiffsplit package dumps the following message when I=
 try to use it:</div><div><br></div><div>./tools/tiffsplit old-style-jpeg.t=
if<br>TIFFReadDirectory: Warning, Unknown field with tag 32931 (0x80a3) enc=
ountered.<br>TIFFReadDirectory: Warning, Unknown field with tag 32934 (0x80=
a6) encountered.<br>TIFFReadRawStrip: Compression scheme does not support a=
ccess to raw uncompressed data.<br></div><div><br></div><div>At first I&#39=
;d assumed that it wasn&#39;t compiled with it, so I tried building it myse=
lf. When ./configure is ran (ubuntu) I see the following output:</div><div>=
<br></div><div>=C2=A0Support for external codecs:<br>=C2=A0 ZLIB support: =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=
=A0 yes<br>=C2=A0 Pixar log-format algorithm: =C2=A0 =C2=A0 =C2=A0 =C2=A0 y=
es<br>=C2=A0 JPEG support: =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0 yes<br>=C2=A0 Old JPEG support: =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 yes<br>=C2=A0 JPEG 8/12 bi=
t dual mode: =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0no<br>=C2=A0 ISO JBIG=
 support: =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 ye=
s<br>=C2=A0 LZMA2 support: =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0 =C2=A0 =C2=A0yes<br>=C2=A0 ZSTD support: =C2=A0 =C2=A0 =C2=
=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 no<br>=C2=A0 WE=
BP support: =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =
=C2=A0 =C2=A0 no<br></div><div><br></div><div>So it looks like it should be=
 available, but it isn&#39;t able to tiffsplit.</div><div><br></div><div>On=
 a Windows subsystem, I downloaded the binaries / dependencies from the Gnu=
Win32 project and out of the gate it was able to tiffsplit the same image (=
with some warnings, but it still was able to work with it).</div><div><br><=
/div><div>My question is: how can I get something compiled on ubuntu to get=
 a version of tiffsplit that can better work with these files that I&#39;m =
having trouble with?</div><div><br></div><div>Thanks in advance,</div><div>=
<br></div><div>Levi</div></div><div class=3D"gmail-yj6qo"></div><div class=
=3D"gmail-adL"></div></div></div><div class=3D"gmail-hi" style=3D"border-bo=
ttom-left-radius:1px;border-bottom-right-radius:1px;padding:0px;width:auto;=
background:rgb(242,242,242);margin:0px"></div></div></div><br class=3D"gmai=
l-Apple-interchange-newline"></div>

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