Does "about-to-finish" signal work for video files?
Locked
 
|
Hello everyone, I am trying to solve the gapless issue programming the event triggered for that signal. I am handling video files (.avi)
The code is very straightforward andn simple, nonetheless it doesn't work. It plays the first and for the second one it throws the following message: (playbin:4324): GLib-GObject-CRITICAL **: g_object_set: assertion `G_IS_OBJECT (object)' failed Any suggestion? thansks Rossana Here is the code: void about_to_finish_cb (GstElement * element, gpointer * uri) { // uri has the name of the next avi file gchar* uri2 = (gchar*)uri; g_object_set (G_OBJECT (element), "uri",uri2, NULL); g_object_set (G_OBJECT (element), "suburi","file:///home/rossana/video3.srt", NULL); } gint main (gint argc, gchar *argv[]) { GMainLoop *loop = 0; GstElement *play = 0; GstBus *bus = 0; /* set up */ gst_init (&argc, &argv); loop = g_main_loop_new (NULL, FALSE); play = gst_element_factory_make ("playbin2", "play"); g_object_set (G_OBJECT (play), "uri","file:///home/rossana/video1.avi", NULL); bus = gst_pipeline_get_bus (GST_PIPELINE (play)); gst_bus_add_watch (bus, bus_call, loop); gst_object_unref (bus); char uri_next[] = "file:///home/rossana/video3.avi"; g_signal_connect (play, "about-to-finish", G_CALLBACK (about_to_finish_cb),uri_next); gst_element_set_state (play, GST_STATE_PLAYING); /* now run */ g_main_loop_run (loop); /* also clean up */ gst_element_set_state (play, GST_STATE_NULL); gst_object_unref (GST_OBJECT (play)); return 0; } _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
Re: Does "about-to-finish" signal work for video files?
|
|
Am 24.02.2012 00:41, schrieb Rossana Guerra:
> Hello everyone, I am trying to solve the gapless issue programming the event > triggered for that signal. I am handling video files (.avi) > The code is very straightforward andn simple, nonetheless it doesn't work. > It plays the first and for the second one it throws the following message: > > (playbin:4324): GLib-GObject-CRITICAL **: g_object_set: assertion `G_IS_OBJECT > (object)' failed run your app as G_DEBUG="fatal_critials" gdb --args ./myapp <options> this will terminate the app on that error. WHen that happend type "bt" to get a backtrace and you see where the error happend. Stefan > > Any suggestion? thansks > > Rossana > > Here is the code: > > > void about_to_finish_cb (GstElement * element, gpointer * uri) > { > // uri has the name of the next avi file > > gchar* uri2 = (gchar*)uri; > g_object_set (G_OBJECT (element), "uri",uri2, NULL); > g_object_set (G_OBJECT (element), > "suburi","file:///home/rossana/video3.srt", NULL); > > } > > gint main (gint argc, gchar *argv[]) > { > GMainLoop *loop = 0; > GstElement *play = 0; > GstBus *bus = 0; > > > /* set up */ > gst_init (&argc, &argv); > > loop = g_main_loop_new (NULL, FALSE); > play = gst_element_factory_make ("playbin2", "play"); > > g_object_set (G_OBJECT (play), "uri","file:///home/rossana/video1.avi", NULL); > > bus = gst_pipeline_get_bus (GST_PIPELINE (play)); > gst_bus_add_watch (bus, bus_call, loop); > gst_object_unref (bus); > > char uri_next[] = "file:///home/rossana/video3.avi"; > g_signal_connect (play, "about-to-finish", G_CALLBACK > (about_to_finish_cb),uri_next); > gst_element_set_state (play, GST_STATE_PLAYING); > > /* now run */ > g_main_loop_run (loop); > > /* also clean up */ > gst_element_set_state (play, GST_STATE_NULL); > gst_object_unref (GST_OBJECT (play)); > > return 0; > } > > > > > _______________________________________________ > gstreamer-devel mailing list > [hidden email] > http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
|
|
thanks, I'll respond as soon as I try.
Cheers Rossana 2012/2/26 Stefan Kost <[hidden email]>: > Am 24.02.2012 00:41, schrieb Rossana Guerra: >> Hello everyone, I am trying to solve the gapless issue programming the event >> triggered for that signal. I am handling video files (.avi) >> The code is very straightforward andn simple, nonetheless it doesn't work. >> It plays the first and for the second one it throws the following message: >> >> (playbin:4324): GLib-GObject-CRITICAL **: g_object_set: assertion `G_IS_OBJECT >> (object)' failed > > run your app as > G_DEBUG="fatal_critials" gdb --args ./myapp <options> > > this will terminate the app on that error. WHen that happend type "bt" to get a > backtrace and you see where the error happend. > > Stefan > >> >> Any suggestion? thansks >> >> Rossana >> >> Here is the code: >> >> >> void about_to_finish_cb (GstElement * element, gpointer * uri) >> { >> // uri has the name of the next avi file >> >> gchar* uri2 = (gchar*)uri; >> g_object_set (G_OBJECT (element), "uri",uri2, NULL); >> g_object_set (G_OBJECT (element), >> "suburi","file:///home/rossana/video3.srt", NULL); >> >> } >> >> gint main (gint argc, gchar *argv[]) >> { >> GMainLoop *loop = 0; >> GstElement *play = 0; >> GstBus *bus = 0; >> >> >> /* set up */ >> gst_init (&argc, &argv); >> >> loop = g_main_loop_new (NULL, FALSE); >> play = gst_element_factory_make ("playbin2", "play"); >> >> g_object_set (G_OBJECT (play), "uri","file:///home/rossana/video1.avi", NULL); >> >> bus = gst_pipeline_get_bus (GST_PIPELINE (play)); >> gst_bus_add_watch (bus, bus_call, loop); >> gst_object_unref (bus); >> >> char uri_next[] = "file:///home/rossana/video3.avi"; >> g_signal_connect (play, "about-to-finish", G_CALLBACK >> (about_to_finish_cb),uri_next); >> gst_element_set_state (play, GST_STATE_PLAYING); >> >> /* now run */ >> g_main_loop_run (loop); >> >> /* also clean up */ >> gst_element_set_state (play, GST_STATE_NULL); >> gst_object_unref (GST_OBJECT (play)); >> >> return 0; >> } >> >> >> >> >> _______________________________________________ >> gstreamer-devel mailing list >> [hidden email] >> http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel > > _______________________________________________ > gstreamer-devel mailing list > [hidden email] > http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
|
|
Hi Rossana ,
I ever met the same issue. It turns to be the bug of video-sink. FYI: You 'd better change the uri in the main thread, and add change state READY ,change state PLAYING around it. Forrest |
|
|
Hi, yes, the bug issue Stephan suggested didn't help so much, bund of code hard to see.
Forrest, could you give me an example please? I don't get it. Thanks and regards Rossana
2012/2/27 forestzhu <[hidden email]> Hi Rossana , _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
|
|
Hi Rossana,
My method is a temporary solution. You should push the plugin-developer to fix the bug. 1.Build a listening thread in the main process before build the pipeline 2.In the "about-to-finish" signal handle send a message to the listening thread. 3.In the listening thread change the uri of playbin2. static void player_change_uri (PLAYER *player) { gst_element_set_state(player->pipeline,GST_STATE_READY); g_object_set (player->pipeline, "uri", get_new_uri(), NULL); gst_element_set_state(player->pipeline,GST_STATE_PLAYING); } Regards! forrest |
|
|
Hi, thanks for the response, interesting tip. I´ll need to work around a little in some concepts before trying it.
Cheers! Rossana 2012/2/28 forestzhu <[hidden email]> Hi Rossana, _______________________________________________ gstreamer-devel mailing list [hidden email] http://lists.freedesktop.org/mailman/listinfo/gstreamer-devel |
«
Return to GStreamer-devel
|
1 view|%1 views
| Free forum by Nabble | Edit this page |