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c2f41a8906
Original commit message from CVS: Next big merge. Added GstBus for mainloop integration. Added GstMessage for sending notifications on the bus. Added GstTask as an abstraction for pipeline entry points. Removed GstThread. Removed Schedulers. Simplified GstQueue for multithreaded core. Made _link threadsafe, removed old capsnego. Added STREAM_LOCK and PREROLL_LOCK in GstPad. Added pad blocking functions. Reworked scheduling functions in GstPad to prepare for scheduling updates soon. Moved events out of data stream. Simplified GstEvent types. Added return values to push/pull. Removed clocking from GstElement. Added prototypes for state change function for next merge. Removed iterate from bins and state change management. Fixed some elements, disabled others for now. Fixed -inspect and -launch. Added check for GstBus.
104 lines
3.3 KiB
C
104 lines
3.3 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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#include <gst/gstclock.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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#define GST_BUS_CAST(bus) ((GstBus*)(bus))
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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 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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{
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GstObject object;
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/*< private > */
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GQueue *queue;
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GMutex *queue_lock;
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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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/*< private > */
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gpointer _gst_reserved[GST_PADDING];
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};
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struct _GstBusClass
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{
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GstObjectClass parent_class;
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/*< private > */
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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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GstBus* gst_bus_new (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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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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GstMessageType gst_bus_poll (GstBus *bus, GstMessageType events,
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GstClockTimeDiff timeout);
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G_END_DECLS
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#endif /* __GST_BUS_H__ */
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