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<p class="MsoNormal"><span lang="EN-US">Hi all,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">This is Oona, a junior software engineer. I send this email to ask your help about my gstreamer application:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Recently, I met a <b>memory leak problem </b>on TX1 platform, when my gstreamer application tried to reconnect to the camera by rtsp.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Moreover, the tegra I’m using is:<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US"># R28 (release), REVISION: 2.0, GCID: 10567845, BOARD: t210ref, EABI: aarch64, DATE: Fri Mar 2 04:58:16 UTC 2018<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-US">Gstreamer is:<o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US">gst-inspect-1.0 version 1.8.1<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US">GStreamer 1.8.3<o:p></o:p></span></b></p>
<p class="MsoNormal"><b><span lang="EN-US">https://launchpad.net/distros/ubuntu/+source/gstreamer1.0<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Problem Details:<o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1">
<![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">The application will call gst_init() at the very first, then builds pipleline as “<u>rtspsrc location=rtsp://${usrname}:${pwd}@${ip}:${port}/cam/realmonitor?channel=1&subtype=0 protocols=tcp ! rtph264depay !
h264parse ! omxh264dec ! video/x-raw, format=NV12 ! appsink sync=false async=false name=appsink1</u>”. As expected, it gets data from camera.
<b>By `top` commands, I can see its occupied-memory is ~108M;</b><o:p></o:p></span></p>
<p class="MsoNormal">（<span lang="EN-US">disable ${ip}</span>）<span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1">
<![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">Of course, the application fails to get data. And the application is trying to reconnect the pipeline periodically.
<b>It is still occupied ~108M;</b><o:p></o:p></span></p>
<p class="MsoNormal">（<span lang="EN-US">enable ${ip}</span>）<span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoListParagraph" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1">
<![if !supportLists]><span lang="EN-US"><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-US">The application succeeds to get video again. However, the memory rises to
<b>~180M!</b><o:p></o:p></span></p>
<p class="MsoNormal"><b><span lang="EN-US">After trying 2,3 for times, I finds that: the memory will increase by -80M each time when it succeed in reconnection.
<o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">The following code segment is the reconnection (first close() then open()). I think I have unref all the resources in close(), in addition, I unref gst-sample, gst-message in time.
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">```<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">int GSTCameraMini::open() {<br>
this->m_camera_state = CAM_INIT; <br>
this -> build_pipeline(); <br>
gst_element_set_state(this -> pipeline, GST_STATE_PLAYING);<br>
return 0;<br>
}<br>
<br>
int GSTCameraMini::close() {<br>
this->m_camera_state = CAM_OFFLINE; <br>
gst_element_set_state(this -> pipeline, GST_STATE_NULL);<br>
// unref appsink<br>
gst_object_unref(G_OBJECT(this -> appsink));<br>
// unref bus<br>
gst_object_unref(G_OBJECT(this -> bus));<br>
// unref pipeline<br>
gst_object_unref(G_OBJECT(this -> pipeline)); <br>
return 0;<br>
}<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">```<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I have no idea where goes wrong, and this problem makes me headache for a long time. It is a bug from gstreamer or other?
<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Sincerely looking forward to your reply.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Best & Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Oona <o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
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