<div style="font-family: Verdana;font-size: 12.0px;"><div>
<div>Thanks!</div>
<div>It seems to work better. I noticed though that both logging function are active in that case (tested ith a standalone application).</div>
<div> </div>
<div>The crashing does never happend in a standalone application, so unfortunetly i cannot reproduce it there. It may also arrise from multiple calling, so I added a protection like so:</div>
<div><span style=" color:#808000;">if</span><span style=" color:#c0c0c0;"> </span><span style=" color:#000000;">(!</span><span style=" color:#000000;">gst_is_initialized</span><span style=" color:#000000;">())</span>
<pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;"> </span><span style=" color:#000000;">{</span></pre>
<pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;"> </span><span style=" color:#000000;">gst_debug_set_default_threshold</span><span style=" color:#000000;">(</span><span style=" color:#800080;">GST_LEVEL_LOG</span><span style=" color:#000000;">);</span></pre>
<pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;"> </span><span style=" color:#000000;">gst_debug_add_log_function</span><span style=" color:#000000;">(&</span>gstLogFunction<span style=" color:#000000;">,</span><span style=" color:#c0c0c0;"> </span><span style=" color:#000080;">NULL</span><span style=" color:#000000;">,</span><span style=" color:#c0c0c0;"> </span><span style=" color:#000080;">NULL</span><span style=" color:#000000;">);</span></pre>
<pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;"> </span><span style=" color:#000000;">gst_debug_remove_log_function</span><span style=" color:#000000;">(&</span>gst_debug_log_default<span style=" color:#000000;">);</span></pre>
<pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;"> </span><span style=" color:#000000;">gst_init</span><span style=" color:#000000;">(</span><span style=" color:#000080;">NULL</span><span style=" color:#000000;">,</span><span style=" color:#c0c0c0;"> </span><span style=" color:#000080;">NULL</span><span style=" color:#000000;">);</span></pre>
<pre style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;"><span style=" color:#c0c0c0;"> </span><span style=" color:#000000;">}</span></pre>
</div>
<div> </div>
<div>BR</div>
<div>
<div name="quote" style="margin:10px 5px 5px 10px; padding: 10px 0 10px 10px; border-left:2px solid #C3D9E5; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;">
<div style="margin:0 0 10px 0;"><b>Gesendet:</b> Dienstag, 05. Januar 2016 um 14:06 Uhr<br/>
<b>Von:</b> "Sebastian Dröge-3 [via GStreamer-devel]" <<a href="/user/SendEmail.jtp?type=node&node=4675119&i=0" target="_top" rel="nofollow" link="external">[hidden email]</a>><br/>
<b>An:</b> pfarmer <<a href="/user/SendEmail.jtp?type=node&node=4675119&i=1" target="_top" rel="nofollow" link="external">[hidden email]</a>><br/>
<b>Betreff:</b> Re: Aw: Re: GStreamer application access violation in random locations</div>
<div name="quoted-content">On Di, 2016-01-05 at 04:36 -0800, pfarmer wrote:
<div class="shrinkable-quote">
<div class="shrinkable-quote"><br/>
> Hello,<br/>
> <br/>
> I am not able to crash the function I posted before earlier. It<br/>
> crashed for sure once, but it may have been realated to some logging<br/>
> initialization that were still in memory at Simulink. So I narrowed<br/>
> it down to the debugging functions of gstreamer. Here the new minimal<br/>
> s-function that crashes every now and then:<br/>
> [...]<br/>
> <br/>
> Note that it also crashes with the empty gstLogFunction().<br/>
> I would like however "redirect" the the gstreamer messages to the<br/>
> Simulink output. So I would like to use those functions.<br/>
> Does someone know what I could do to avoid the crashing?</div>
</div>
This probably does not crash if you first add your log function, then<br/>
remove the old one and only then call gst_init(). And make sure that<br/>
these 3 things are only ever done once per process.<br/>
<br/>
That's only a workaround though, somewhere there is a bug hiding. Can<br/>
you also reproduce this in a standalone application? <br/>
<br/>
--<br/>
Sebastian Dröge, Centricular Ltd · <a href="http://www.centricular.com" target="_blank" rel="nofollow" link="external">http://www.centricular.com</a><br/>
<br/>
<br/>
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