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95 lines
3 KiB
C
95 lines
3 KiB
C
/* GStreamer
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* Copyright (C) 2004 Wim Taymans <wim@fluendo.com>
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*
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* gstbus.h: Header for GstBus subsystem
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_BUS_H__
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#define __GST_BUS_H__
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#include <gst/gsttypes.h>
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#include <gst/gstmessage.h>
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G_BEGIN_DECLS
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/* --- standard type macros --- */
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#define GST_TYPE_BUS (gst_bus_get_type ())
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#define GST_BUS(bus) (G_TYPE_CHECK_INSTANCE_CAST ((bus), GST_TYPE_BUS, GstBus))
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#define GST_IS_BUS(bus) (G_TYPE_CHECK_INSTANCE_TYPE ((bus), GST_TYPE_BUS))
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#define GST_BUS_CLASS(bclass) (G_TYPE_CHECK_CLASS_CAST ((bclass), GST_TYPE_BUS, GstBusClass))
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#define GST_IS_BUS_CLASS(bclass) (G_TYPE_CHECK_CLASS_TYPE ((bclass), GST_TYPE_BUS))
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#define GST_BUS_GET_CLASS(bus) (G_TYPE_INSTANCE_GET_CLASS ((bus), GST_TYPE_BUS, GstBusClass))
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typedef enum
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{
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GST_BUS_DROP = 0, /* drop message */
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GST_BUS_PASS = 1, /* pass message to async queue */
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GST_BUS_ASYNC = 2, /* pass message to async queue, continue if message is handled */
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} GstBusSyncReply;
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typedef struct _GstBus GstBus;
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typedef struct _GstBusClass GstBusClass;
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typedef GstBusSyncReply (*GstBusSyncHandler) (GstBus *bus, GstMessage *message, gpointer data);
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typedef gboolean (*GstBusHandler) (GstBus *bus, GstMessage *message, gpointer data);
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struct _GstBus {
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GstObject object;
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GAsyncQueue *queue;
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GstBusSyncHandler sync_handler;
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gpointer sync_handler_data;
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gint control_socket[2];
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GIOChannel *io_channel;
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gpointer _gst_reserved[GST_PADDING];
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};
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struct _GstBusClass {
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GstObjectClass parent_class;
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gpointer _gst_reserved[GST_PADDING];
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};
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GType gst_bus_get_type (void);
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gboolean gst_bus_post (GstBus *bus, GstMessage *message);
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gboolean gst_bus_have_pending (GstBus *bus);
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const GstMessage* gst_bus_peek (GstBus *bus);
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GstMessage* gst_bus_pop (GstBus *bus);
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void gst_bus_set_sync_handler (GstBus *bus, GstBusSyncHandler func,
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gpointer data);
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GSource* gst_bus_create_watch (GstBus *bus);
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guint gst_bus_add_watch_full (GstBus *bus,
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gint priority,
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GstBusHandler handler,
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gpointer user_data,
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GDestroyNotify notify);
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guint gst_bus_add_watch (GstBus *bus,
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GstBusHandler handler,
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gpointer user_data);
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G_END_DECLS
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#endif /* __GST_BUS_H__ */
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