hi folks, before i get to bed, i wanted to share this little example of gstreamer states and tags, maybe someone finds it useful (or has some additions/corrections).
good night osku ps. is it "normal" that i get: In function ‘bus_callback’: 86: warning: passing argument 2 of ‘gst_tag_list_foreach’ from incompatible pointer type when compiling?
// -*- tab-width: 4 -*- /* valac --pkg gstreamer-0.10 stream_states_and_tags.vala ./stream_states_and_tags http://scfire-dtc-aa06.stream.aol.com:80/stream/1018 */ using Gst; dynamic Gst.Element play_src; void foreach_tag (Gst.TagList list, string tag) { GLib.Value tag_string = GLib.Value(typeof(string)); GLib.Value foobar = list.get_value_index (tag, 0); foobar.transform(ref tag_string); stdout.printf ("got tag: %s=%s\n", tag, tag_string.get_string()); } bool bus_callback (Gst.Bus bus, Gst.Message message) { GLib.Error err; string debug; Gst.State oldstate; Gst.State newstate; Gst.State penstate; Gst.TagList tag_list; switch (message.type) { case Gst.MessageType.ERROR: play_src.set_state (State.NULL); message.parse_error (out err, out debug); stdout.printf ("Error: %s\n", err.message); break; case Gst.MessageType.TAG: message.parse_tag (out tag_list); tag_list.foreach (foreach_tag); break; case Gst.MessageType.STATE_CHANGED: message.parse_state_changed ( out oldstate, out newstate, out penstate); stdout.printf ("state changed: %s>%s|%s\n", oldstate.to_string(), newstate.to_string(), penstate.to_string()); break; default: stdout.printf ("unhandled state: %s\n", message.type.to_string()); break; } return true; } public static int main (string[] args) { if (args.length <= 1) { stdout.printf ("Usage: %s <url to audio stream>\n", args[0]); return 1; } Gst.init (ref args); Gst.Bus bus; play_src = Gst.ElementFactory.make ("playbin", "play_src"); bus = play_src.get_bus (); bus.add_watch (bus_callback); play_src.uri = args[1]; play_src.set_state (State.PLAYING); var loop = new MainLoop (null, false); loop.run (); return 0; } // vim:tabstop=4:
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