2 * Copyright (C) 2004 Wim Taymans <wim@fluendo.com>
4 * gstbus.h: Header for GstBus subsystem
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Library General Public License for more details.
16 * You should have received a copy of the GNU Library General Public
17 * License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 * Boston, MA 02111-1307, USA.
25 typedef struct _GstBus GstBus;
26 typedef struct _GstBusClass GstBusClass;
28 #include <gst/gstmessage.h>
29 #include <gst/gstclock.h>
33 /* --- standard type macros --- */
34 #define GST_TYPE_BUS (gst_bus_get_type ())
35 #define GST_BUS(bus) (G_TYPE_CHECK_INSTANCE_CAST ((bus), GST_TYPE_BUS, GstBus))
36 #define GST_IS_BUS(bus) (G_TYPE_CHECK_INSTANCE_TYPE ((bus), GST_TYPE_BUS))
37 #define GST_BUS_CLASS(bclass) (G_TYPE_CHECK_CLASS_CAST ((bclass), GST_TYPE_BUS, GstBusClass))
38 #define GST_IS_BUS_CLASS(bclass) (G_TYPE_CHECK_CLASS_TYPE ((bclass), GST_TYPE_BUS))
39 #define GST_BUS_GET_CLASS(bus) (G_TYPE_INSTANCE_GET_CLASS ((bus), GST_TYPE_BUS, GstBusClass))
40 #define GST_BUS_CAST(bus) ((GstBus*)(bus))
43 GST_BUS_FLUSHING = GST_OBJECT_FLAG_LAST,
45 GST_BUS_FLAG_LAST = GST_OBJECT_FLAG_LAST + 1
50 GST_BUS_DROP = 0, /* drop message */
51 GST_BUS_PASS = 1, /* pass message to async queue */
52 GST_BUS_ASYNC = 2, /* pass message to async queue, continue if message is handled */
55 typedef GstBusSyncReply (*GstBusSyncHandler) (GstBus * bus, GstMessage * message, gpointer data);
56 typedef gboolean (*GstBusHandler) (GstBus * bus, GstMessage * message, gpointer data);
66 GstBusSyncHandler sync_handler;
67 gpointer sync_handler_data;
70 gpointer _gst_reserved[GST_PADDING];
75 GstObjectClass parent_class;
78 gpointer _gst_reserved[GST_PADDING];
81 GType gst_bus_get_type (void);
83 GstBus* gst_bus_new (void);
85 gboolean gst_bus_post (GstBus * bus, GstMessage * message);
87 gboolean gst_bus_have_pending (GstBus * bus);
88 GstMessage * gst_bus_peek (GstBus * bus);
89 GstMessage * gst_bus_pop (GstBus * bus);
90 void gst_bus_set_flushing (GstBus * bus, gboolean flushing);
92 void gst_bus_set_sync_handler (GstBus * bus, GstBusSyncHandler func,
95 GSource * gst_bus_create_watch (GstBus * bus);
96 guint gst_bus_add_watch_full (GstBus * bus,
98 GstBusHandler handler,
100 GDestroyNotify notify);
101 guint gst_bus_add_watch (GstBus * bus,
102 GstBusHandler handler,
104 GstMessageType gst_bus_poll (GstBus *bus, GstMessageType events,
105 GstClockTimeDiff timeout);
109 #endif /* __GST_BUS_H__ */