Thanks a lot. <div class="gmail_quote">On Sun, Sep 9, 2012 at 11:19 AM, José Alburquerque <<a href="mailto:jaalburquerque@cox.net" target="_blank">jaalburquerque@cox.net</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="im">On Sun, 2012-09-09 at 09:46 +0300, Jiergir Ogoerg wrote: > Thanks, > To my desktop app startup time is critical, so, if I switch to the Gst > C interface do you think the gst_init() would never take longer than > say 200 milliseconds? Or is it nonetheless possible for it to take > much longer like over 1-2 seconds in some cases? </div>Actually, I think I spoke too soon in my last post. I was just thinking things through more thoroughly and since plug-in types are not accessible in C. It may be possible to register the wrapping functions for these plug-in types later (when they are constructed) and not at startup (in Gst::init()) since it is not possible to have these plug-in types from some C code and then try to wrap them in a C++ wrapper which is why we go through the process of loading the plug-ins and registering the wrapping functions in the first place. It may not even be necessary to register wrapping functions for these plug-in types. If the above is so, startup time (Gst::init()) will probably never be more than the 100ms you mentioned. I'll be looking into this this week at the end of which a new release should be out. If it this is doable, I'll include it in that release. In the meanwhile, however, I'm sure that using C will never have such a slow start-up time. gst_init() does not load all the possible plug-ins as gstreamermm does right now. <div class="HOEnZb"><div class="h5">> > > On Sun, Sep 9, 2012 at 7:37 AM, José Alburquerque > <<a href="mailto:jaalburquerque@cox.net">jaalburquerque@cox.net</a>> wrote: > On Sat, 2012-09-08 at 13:19 +0300, Jiergir Ogoerg wrote: > > Hi, > > Gst::init() takes like 100+ ms, on rare occasions it takes > even > > longer, like over 2-4 seconds. Is it normal? > > > Probably. The reason is that Gst::init() not only initializes > GStreamer, it also initializes glibmm (which it relies on) and > registers > methods that wrap C types to correct C++ types for all the > GStreamer > GObject and GstMiniObject derived types and all the GStreamer > plug-in > types that gstreamermm makes available to be used in a C++ > way. In the > process, it must load all the plug-ins that gstreamermm makes > available > (this is probably the most time consuming part though only for > the > execution for which the plug-ins have not been loaded; the > rest of the > executions wont experience so much a delay). We know of no > other way to > ensure that the C objects handled are correctly differentiated > and > treated as appropriate C++ classes. > > > > > To combat this I do Gst::init() in another pthread for my > gui app to > > show up instantly as usually. > > > > Using Ubuntu 12.04 amd64. > > Intel Core i5. > > > _______________________________________________ > > gstreamer-devel mailing list > > <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> > > > <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> > > > -- > José > > _______________________________________________ > gstreamer-devel mailing list > <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> > <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> > > > _______________________________________________ > gstreamer-devel mailing list > <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> > <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> -- José _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel" target="_blank">http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a> </div></div></blockquote></div>