<div class="gmail_quote">2009/6/19 Wim Taymans <<a href="mailto:wim.taymans@gmail.com">wim.taymans@gmail.com</a>> <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> On Fri, 2009-06-19 at 16:02 +0000, Albert Costa wrote: Your approach will probably work. Current GIT /and the eventual 0.10.24) has framestepping through the STEP events, which should solve things in a more general way (when you need to keep audio synchronized too).</blockquote><div> </div><div>Does that means that the framestep draft [1] will be finally implemented in 0.10.24? Good news, though. Cheers [1] <a href="http://cgit.freedesktop.org/gstreamer/gstreamer/tree/docs/design/draft-framestep.txt">http://cgit.freedesktop.org/gstreamer/gstreamer/tree/docs/design/draft-framestep.txt</a> </div><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> Wim <div><div></div><div class="h5"> > Hi, > I'm trying to do the following: > I have an application that constructs and controls a pipeline. Merely, > my pipe would be "filesink ! decodebin ! identity sync=true ! > myfilter ! ffmpegcolorspace ! directdrawsink sync=false". > The element myfilter is currently just a pass-through element (it does > not process anything). My goal is, from the application, to play the > file only by moving a frame ahead when the user hits a key (in fact > later that would be a signal sent by another process). My idea was to > block the chain() function inside myfilter each time it is called, > untill a release notification is sent. What I did so far is : > in the chain() : > { > ... > g_mutex_lock(myfilter->lock); > do > { > g_cond_wait(myfilter->process_next, myfilter->lock); > } > g_mutex_unlock(myfilter ->lock); > ... > } > > > In my application, I have a specific function that gets the sink pad > of my filter element, and send a specific event on it. > In myfilter's sink_event function, I have a case of event type where I > call g_cond_signal(myfilter->process_next) (which I thought would > release the lock in the chain). > My problem is that when I launch the pipeline, the cond_wait does lock > the chain function; but then in my application specific function, > calling gst_pad_send_event never returns, and my event is thus not > received by my element. Eveything hangs... > Is there any way to have it working somehow? (another option was to > set the pipe in pause mode and send seek events to go to next frame, > but i'm using mpeg2 ts files that do not support seek anyway, and I > have other constraints for which I need an element that can be > controled). > Any help would be appreciated, > Regards, > Al > > > > > > </div></div>> ------------------------------------------------------------------------------ > Crystal Reports - New Free Runtime and 30 Day Trial > Check out the new simplified licensing option that enables unlimited > royalty-free distribution of the report engine for externally facing > server and web deployment. > <a href="http://p.sf.net/sfu/businessobjects" target="_blank">http://p.sf.net/sfu/businessobjects</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> ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. <a href="http://p.sf.net/sfu/businessobjects" target="_blank">http://p.sf.net/sfu/businessobjects</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> -- Andoni Morales Alastruey LongoMatch:The Digital Coach <a href="http://www.longomatch.ylatuya.es">http://www.longomatch.ylatuya.es</a>