<html><head><style type="text/css"></style></head><body><div style="font-family:'times new roman', 'new york', times, serif;font-size:12pt"><div>Hi Tim,</div><div>tried and approved, thanks a lot again for your help!</div><div>Regards,</div><div>Al</div><div style="font-family:times new roman, new york, times, serif;font-size:12pt"> <div style="font-family:arial, helvetica, sans-serif;font-size:13px"><hr size="1">De : Tim-Philipp Müller <t.i.m@zen.co.uk> À : gstreamer-devel@lists.sourceforge.net Envoyé le : Mar 6 juillet 2010, 10h 05min 22s Objet : Re: [gst-devel] Freeing application data from message On Mon, 2010-07-05 at 12:11 +0000, Albert Costa wrote: >  MyInfo* myinfo = new MyInfo; >  /* do stuff with myinfo, including allocating internal data */ > >  structure = gst_structure_new("FILTERMESSAGE", >    "info", G_TYPE_POINTER, (gpointer)myinfo, >    NULL); The problem here is that you're using G_TYPE_POINTER. If you use G_TYPE_POINTER, the type system doesn't know how to copy or free your data, so it's up to you to take care of this. What you should do is register a 'boxed type' for your structure, like this: static MyInfo * my_info_ref (MyInfo * info) {   if (info != NULL)     g_atomic_int_inc (&info->refcount);   return info; } static void my_info_unref (MyInfo * info) {   /* if we ended up with the refcount at zero, free it */   if (g_atomic_int_dec_and_test (&info->refcount)) {     /* g_free (info->foo); */     /* g_free (info);      */   } } #define MY_TYPE_INFO my_info_get_type() static GType my_info_get_type (void) {   static volatile gsize type = 0;   if (g_once_init_enter (&type)) {     GType tmp;     tmp = g_boxed_type_register_static ("MyInfo",         (GBoxedCopyFunc) my_info_ref,         (GBoxedFreeFunc) my_info_unref);     g_once_init_leave (&type, tmp);   }   return type; } Then you can use: > structure = gst_structure_new("FILTERMESSAGE", >    "info", MY_TYPE_INFO, myinfo, NULL); > my_info_unref (myinfo); and the info will be freed automatically with the message later (unless you are still holding refs). >  gst_bus_post (bus, msg); Use gst_element_post_message(). > On the other side, I have my application that watches the bus > messages, and gets my info: >    case GST_MESSAGE_APPLICATION: >        const GstStructure *structure = > gst_message_get_structure(message); >        MyInfo* info; >        info = > (MyInfo*)g_value_get_pointer(gst_structure_get_value(structure, > "info")); You can then use _get_boxed() here (to just get a pointer to your info structure), or _dup_boxed() (to get a pointer and a reference). > Cheers -Tim PS: you still have not filed a bug about that MTS typefind problem from a few days ago. Could you please do that and/or send me the (beginning of the) file? ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- <a href="http://p.sf.net/sfu/sprint-com-first" target="_blank">http://p.sf.net/sfu/sprint-com-first</a> _______________________________________________ gstreamer-devel mailing list <a ymailto="mailto:gstreamer-devel@lists.sourceforge.net" 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> </div></div><div style="position:fixed"></div> </div> </body></html>