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This is an automatically generated e-mail. To reply, visit:
<a href="http://git.reviewboard.kde.org/r/104922/">http://git.reviewboard.kde.org/r/104922/</a>
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<a href="http://git.reviewboard.kde.org/r/104922/diff/1/?file=64091#file64091line125" style="color: black; font-weight: bold; text-decoration: underline;">src/plugins/positionprovider/flightgear/FlightGearPositionProviderPlugin.cpp</a>
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(Diff revision 1)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void FlightGearPositionProviderPlugin::readPendingDatagrams()</pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">fixBadGPRMC</span><span class="p">(</span><span class="n">line</span><span class="p">);</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="n">fixBadGPRMC</span><span class="p">(</span><span class="n">line</span><span class="p">);</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">If the timestamp is not used (see below), you may remove this line as it fixes a not standard conform date format problem in the GPRMC sentences </pre>
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<a href="http://git.reviewboard.kde.org/r/104922/diff/1/?file=64091#file64091line161" style="color: black; font-weight: bold; text-decoration: underline;">src/plugins/positionprovider/flightgear/FlightGearPositionProviderPlugin.cpp</a>
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(Diff revision 1)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">void FlightGearPositionProviderPlugin::readPendingDatagrams()</pre></td>
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<td bgcolor="#c5ffc4" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="kt">double</span> <span class="k">const</span> <span class="n">alt</span> <span class="o">=</span> <span class="n">values</span><span class="p">[</span><span class="mi">9</span><span class="p">].</span><span class="n">toDouble</span><span class="p">();</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">you do not convert the feet value into meters as done in line 146.
According to http://de.wikipedia.org/wiki/NMEA_0183#Global_Positioning_System_Fix_Data_.28GGA.29 the entry after the height values contains the height unit. fg provides 'F' for feets.
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<a href="http://git.reviewboard.kde.org/r/104922/diff/1/?file=64091#file64091line223" style="color: black; font-weight: bold; text-decoration: underline;">src/plugins/positionprovider/flightgear/FlightGearPositionProviderPlugin.cpp</a>
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(Diff revision 1)
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<td colspan="4"><pre style="font-size: 8pt; line-height: 140%; margin: 0; ">QDateTime FlightGearPositionProviderPlugin::timestamp() const</pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">return</span> <span class="n">m_timestamp</span><span class="p">;</span></pre></td>
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<td bgcolor="#ffffff" width="50%"><pre style="font-size: 8pt; line-height: 140%; margin: 0; "> <span class="k">return</span> <span class="n">m_timestamp</span><span class="p">;</span></pre></td>
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<pre style="margin-left: 2em; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">here the timestamp from GPRMC record may be usable ? </pre>
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<pre style="white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">A different approach may be to include a copy of the nmea library source in the plugin dir or a 3rdparty dir located in marble's top level dir as qt does. The advantage is that you do not need to hack on the nmea protocol internals and in case the nmealib may be maintained and packaged in future, there is only minimal work required to switch to the external package. </pre>
<p>- Ralf</p>
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<p>On May 12th, 2012, 9:09 a.m., Dennis Nienhüser wrote:</p>
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<div>Review request for Marble and Ralf Habacker.</div>
<div>By Dennis Nienhüser.</div>
<p style="color: grey;"><i>Updated May 12, 2012, 9:09 a.m.</i></p>
<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Description </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">I'd like to have Linux distributions ship Marble with the flightgear position provider plugin. Currently that's unlikely to happen as the major distributions do not package the nmea library used by the plugin. I looked into replacing the dependency with gpsd/libgps, but unfortunately the sparse set of methods libgps provides only allows to parse json data or handle the communication via a socket.
The nmea format is quite simple however and flightgear only uses a small subset of it -- two of the sentences used are relevant to us. Therefore it's not too complicated to write our own parser without an additional dependency.</pre>
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Testing </h1>
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<pre style="margin: 0; padding: 0; white-space: pre-wrap; white-space: -moz-pre-wrap; white-space: -pre-wrap; white-space: -o-pre-wrap; word-wrap: break-word;">FlightGear version 2.4.0 on Linux, started with
fgfs --nmea=socket,out,5,localhost,5500,udp
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<h1 style="color: #575012; font-size: 10pt; margin-top: 1.5em;">Diffs</b> </h1>
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<li>Findnmealib.cmake <span style="color: grey">(7f14058)</span></li>
<li>src/plugins/positionprovider/CMakeLists.txt <span style="color: grey">(d3cfc3d)</span></li>
<li>src/plugins/positionprovider/flightgear/FlightGearPositionProviderPlugin.h <span style="color: grey">(c7c7dac)</span></li>
<li>src/plugins/positionprovider/flightgear/FlightGearPositionProviderPlugin.cpp <span style="color: grey">(af0eb9a)</span></li>
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<p><a href="http://git.reviewboard.kde.org/r/104922/diff/" style="margin-left: 3em;">View Diff</a></p>
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