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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - PDF hint table fails to load if PDFDoc is opened with stream start offset != 0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95061#c4">Comment # 4</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - PDF hint table fails to load if PDFDoc is opened with stream start offset != 0"
href="https://bugs.freedesktop.org/show_bug.cgi?id=95061">bug 95061</a>
from <span class="vcard"><a class="email" href="mailto:seksfemfire@gmail.com" title="Ole Liabø <seksfemfire@gmail.com>"> <span class="fn">Ole Liabø</span></a>
</span></b>
<pre>1. I would like to withdraw my original patch - it does not solve all the
issues. Sorry for committing it prematurely. The original bug still remains
though.
2. "The main stream of a PDF always starts with offset 0": This is true if
the filename PDFDoc constructor is used. But my bug refer to when the
PDFDoc is created with a BaseStream as input. This stream could have a
offset != 0, fex if you have concatenated many PDFS into one file. Today
the code does not handle this case and the use of this PDFDoc constructor
should be avoided until it's fixed. I'm working on a more comprehensive
patch.
On Tue, Apr 26, 2016 at 12:21 PM, <<a href="mailto:bugzilla-daemon@freedesktop.org">bugzilla-daemon@freedesktop.org</a>> wrote:
<span class="quote">> *<a href="show_bug.cgi?id=95061#c3">Comment # 3</a> <<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - PDF hint table fails to load if PDFDoc is opened with stream start offset != 0"
href="show_bug.cgi?id=95061#c3">https://bugs.freedesktop.org/show_bug.cgi?id=95061#c3</a>> on
> <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - PDF hint table fails to load if PDFDoc is opened with stream start offset != 0"
href="show_bug.cgi?id=95061">bug 95061</a> <<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - PDF hint table fails to load if PDFDoc is opened with stream start offset != 0"
href="show_bug.cgi?id=95061">https://bugs.freedesktop.org/show_bug.cgi?id=95061</a>> from Thomas
> Freitag <<a href="mailto:Thomas.Freitag@alfa.de">Thomas.Freitag@alfa.de</a>> *</span >
>
<span class="quote">> I'm a little bit confused about it:
> 1. If I parse the PDF of <a href="show_bug.cgi?id=95061#c2">comment 2</a> <<a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - PDF hint table fails to load if PDFDoc is opened with stream start offset != 0"
href="show_bug.cgi?id=95061#c2">https://bugs.freedesktop.org/show_bug.cgi?id=95061#c2</a>> i.e. with /utils/pdftoppm -png -f 1 -l 1
> -cropbox I don't get any error messages.
> 2. The main stream of a PDF always starts with offset 0
> 3. The PDF spec says about the H entry in the "Linearization Parameter
> Dictionary": offset1 shall be the offset of the primary hint stream from the
> beginning(!!!) of the file.
> 4. All offsets in poppler, i.e. also the xref offets, are offsets from the
> beginning of a file and never add some hypothetical offet of substreams</span >
>
<span class="quote">> ------------------------------
> You are receiving this mail because:</span >
>
<span class="quote">> - You reported the bug.</span >
>
></pre>
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