<div class="gmail_quote">2010/11/18 Sebastian Dröge <<a href="mailto:sebastian.droege@collabora.co.uk">sebastian.droege@collabora.co.uk</a>> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> <div class="im">On Thu, 2010-11-18 at 13:00 -0200, Tiago Katcipis wrote: > > > That's all possible but the problem with that is, that a) the > state > change from NULL->READY happens synchronous in GStreamer and > that b) > basesrc wants to know the file size in READY already, > otherwise it will > never activate random access mode. > > > Well if it must be synchronous running the main loop on another Thread > does not to seem to be an option. What is done on gst_bus_poll seems > to fit here: > > 1 - the caller on the set_state will get blocked on the call > 2 - inside the call we mount the file and do all the stuff async using > the main_loop_run to block the caller > 3 - after everything is done we get out of the run call and give to > the basesrc the file size > > this way we can use the async GIO API, mount the file for the user > giving a "sync" operation to the set_state caller. But this approach > is pretty simple, if you guys still not implemented it... it is > because it has something pretty bad on it... it is because the same > problem that can happen on gst_bus_poll? </div>That would work in theory but the problem here is, that GStreamer does not require any running GLib main loop on the main context by policy. </blockquote><div> does not require, but if we create it? the user does not need to know that a main loop has been created, and if the mainloop on the main context already exists...we use it. but i agree that it is ugly and your suggestion seems to be better...make the transition of states async: <a href="https://bugzilla.gnome.org/show_bug.cgi?id=586939">https://bugzilla.gnome.org/show_bug.cgi?id=586939</a> so my question now is... is there any planning on doing this? because if it is not going to be done, even if it is not beautiful (like gst_bus_poll) it seems to be better to let the user "ask" the plugin to mount everything to him instead of having to catch a message "not-mounted" and them having to mount (asynchronously...a pain in the ass) and them setting the pipeline to play again. best regards, Katcipis </div><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> ------------------------------------------------------------------------------ Beautiful is writing same markup. Internet Explorer 9 supports standards for HTML5, CSS3, SVG 1.1, ECMAScript5, and DOM L2 & L3. Spend less time writing and rewriting code and more time creating great experiences on the web. Be a part of the beta today <a href="http://p.sf.net/sfu/msIE9-sfdev2dev" target="_blank">http://p.sf.net/sfu/msIE9-sfdev2dev</a> _______________________________________________ gstreamer-devel mailing list <a href="mailto:gstreamer-devel@lists.sourceforge.net">gstreamer-devel@lists.sourceforge.net</a> <a href="https://lists.sourceforge.net/lists/listinfo/gstreamer-devel" target="_blank">https://lists.sourceforge.net/lists/listinfo/gstreamer-devel</a> </blockquote></div> -- <a href="http://www.getgnulinux.org/windows">http://www.getgnulinux.org/windows</a>