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<p>Craig,</p>
<p>What would you be your idea: decode the PBF into JSON ? otherwise
re-using the existing code of the ESRI JSON driver is going to be
difficult as it assumes JSON everywhere.<br>
</p>
<p>For PBF reading, we have ogr/ogrsf_frmts/gpb.h used both by the
OSM PBF driver and the MVT driver. This is probably a bit tedious
to use than code generated by the protobuf compiler, but at least
this saves an extra dependency.</p>
<p>I'm a bit skeptical about the ability of a LLM to generate code
that will insert nicely into GDAL, but let's see...</p>
<p>Even<br>
</p>
<div class="moz-cite-prefix">Le 23/07/2025 à 00:04, Craig de Stigter
via gdal-dev a écrit :<br>
</div>
<blockquote type="cite"
cite="mid:CAF1M8pe+y0+bsZ74o1inkH3cggm3px3EN+wee+fH0GW+sv_E6A@mail.gmail.com">
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<div>Hi folks</div>
<div><br>
</div>
<div>OGR has support for ESRI FeatureService endpoints via the
<a
href="https://gdal.org/en/stable/drivers/vector/esrijson.html"
moz-do-not-send="true">ESRI JSON</a> driver.</div>
<div>I am wondering if there would be interest in adding PBF
support to that driver, so that we could ingest the more
efficient PBF versions of those endpoints.</div>
<div><br>
</div>
<div>As far as I can tell, this is *different* and unrelated
to the OSM PBF format that GDAL already supports.</div>
<div><br>
</div>
<div>Feature servers we have come across that support PBF seem
to return query results much faster and more reliably in PBF
rather than JSON.</div>
<div><br>
</div>
<div>We have some Python code internally (not using GDAL) that
handles the PBF, but it performs poorly due to being
computation code in Python. I am investigating ways to speed
it up using other languages. As part of this I may be in a
position to convert it to C++ and contribute it to GDAL, if
there is interest. I am no C++ developer but am becoming
proficient with Claude Code :)</div>
<div><br>
</div>
<div>I would lean towards implementing the PBF support as a
by-default optimisation on the existing ESRIJSON driver, if
the server advertises support for PBF - with a config option
to force use of JSON if necessary. A separate driver would
be an alternative but seems unnecessary since the PBF
structure is quite similar to the JSON structure (the main
difference is that geometries are encoded more efficiently)</div>
<div><br>
</div>
<div>I haven't given much time towards investigating how to do
this in GDAL, but would appreciate any tips or discussion.</div>
<br>
<span class="gmail_signature_prefix">-- </span><br>
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data-smartmail="gmail_signature">
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<div
style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">Regards,</div>
<div
style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">Craig</div>
<div
style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px"><br>
</div>
<div
style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">Platform
Engineer<br>
</div>
<div
style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px">Koordinates</div>
<div
style="color:rgb(0,0,0);font-family:Helvetica;font-size:12px"><a
href="http://koordinates.com/"
style="color:rgb(17,85,204)" target="_blank"
moz-do-not-send="true">koordinates.com</a> / <a
href="https://twitter.com/koordinates"
style="color:rgb(17,85,204)" target="_blank"
moz-do-not-send="true">@koordinates</a></div>
</div>
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<br>
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