<div dir="ltr"><div dir="ltr">Hello Julien,</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Apr 19, 2022 at 11:30 AM Julien Nabet <<a href="mailto:serval2412@yahoo.fr">serval2412@yahoo.fr</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>Hello,</p>
<p>I noticed some bugs about dealing with TIFF images (see
<a href="https://bugs.documentfoundation.org/show_bug.cgi?id=126152" target="_blank">https://bugs.documentfoundation.org/show_bug.cgi?id=126152</a> for the
meta).</p>
<p>According to <a href="https://en.wikipedia.org/wiki/TIFF" target="_blank">https://en.wikipedia.org/wiki/TIFF</a>, TIFF is quite
complex, I quote:</p>
<p>"TIFF is a complex format, defining many tags of which typically
only a few are used in each file. This led to implementations
supporting very varying subsets of the format, a situation that
gave rise to the joke that TIFF stands for <i>Thousands of
Incompatible File Formats</i>.".</p>
<p>So in <a href="https://gerrit.libreoffice.org/c/core/+/133108" target="_blank">https://gerrit.libreoffice.org/c/core/+/133108</a>, I wondered
if we could use Libtiff. Of course as<span id="gmail-m_-1655971597331728568hovercardTarget"> <span> <span>Tomaž
indicated</span></span></span> it'll need lots of work.
However Mike pointed out Luboš' commit about Webp to take example</p>
<p><a href="https://cgit.freedesktop.org/libreoffice/core/commit/?id=60eaa424c5e213f31227008e1ed66a646491a360" target="_blank">https://cgit.freedesktop.org/libreoffice/core/commit/?id=60eaa424c5e213f31227008e1ed66a646491a360</a>
("support for the WebP image format (<a href="https://bugs.documentfoundation.org/show_bug.cgi?id=114532" target="_blank">tdf#114532</a>)")
which can be a start.<br>
</p>
<p>But before this, is libtiff license compatible?</p>
<p>I mean, I retrieved source code of libtiff and m4/acinclude.m4
indicates (from line 192):</p>
<p>dnl This program is free software; you can redistribute it
and/or modify it<br>
dnl under the terms of the GNU General Public License as
published by the<br>
dnl Free Software Foundation; either version 2 of the License,
or (at your<br>
dnl option) any later version.<br>
</p>
<p>If I remember well, GPL isn't sufficient, we also need LGPL,
don't we?</p>
<p></p></div></blockquote><div><br></div><div>You quoted the license of GNU Autoconf. Libtiff has a BSD-like licence. <a href="https://gitlab.com/libtiff/libtiff/-/blob/master/COPYRIGHT">https://gitlab.com/libtiff/libtiff/-/blob/master/COPYRIGHT</a></div><div><br></div><div>Best regards,</div><div>Andras</div></div></div>