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110 lines
4.3 KiB
C
110 lines
4.3 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wtay@chello.be>
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*
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* gstscheduler.h: Header for default scheduler code
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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_SCHEDULER_H__
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#define __GST_SCHEDULER_H__
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#include <glib.h>
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#include <gst/gstelement.h>
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#include <gst/gstdata.h>
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G_BEGIN_DECLS
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#define GST_TYPE_SCHEDULER (gst_scheduler_get_type ())
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#define GST_SCHEDULER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_SCHEDULER, GstScheduler))
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#define GST_IS_SCHEDULER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_SCHEDULER))
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#define GST_SCHEDULER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_SCHEDULER,GstSchedulerClass))
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#define GST_IS_SCHEDULER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_SCHEDULER))
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#define GST_SCHEDULER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_SCHEDULER, GstSchedulerClass))
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typedef enum {
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/* this scheduler works with a fixed clock */
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GST_SCHEDULER_FLAG_FIXED_CLOCK = GST_OBJECT_FLAG_LAST,
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/* padding */
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GST_SCHEDULER_FLAG_LAST = GST_OBJECT_FLAG_LAST + 4
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} GstSchedulerFlags;
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typedef (*GstMarshalFunc) (gpointer data);
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struct _GstScheduler {
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GstObject object;
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GstClock *clock;
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GstClock *current_clock;
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GList *clock_providers;
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GList *clock_receivers;
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gpointer _gst_reserved[GST_PADDING];
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};
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struct _GstSchedulerClass {
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GstObjectClass parent_class;
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/* virtual methods */
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/* required */
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void (*marshal) (GstScheduler *sched, GstMarshalFunc func, gpointer data);
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void (*add_action) (GstScheduler *sched, GstAction *action);
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void (*remove_action) (GstScheduler *sched, GstAction *action);
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/* FIXME: can/want this optional, too? */
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void (*pad_push) (GstScheduler *sched, GstRealPad *pad, GstData *data);
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/* optional */
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void (*update_values) (GstScheduler *sched, GstAction *action);
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void (*toggle_active) (GstScheduler *sched, GstAction *action);
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void (*add_element) (GstScheduler *sched, GstElement *element);
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void (*remove_element) (GstScheduler *sched, GstElement *element);
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GstElementStateReturn (*state_transition) (GstScheduler *sched, GstElement *element, gint transition);
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void (*error) (GstScheduler *sched, GstElement *element);
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/* FIXME: make this GstRealPad */
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void (*pad_link) (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad);
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void (*pad_unlink) (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad);
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/* for debugging */
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void (*show) (GstScheduler *sched);
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gpointer _gst_reserved[GST_PADDING];
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};
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GType gst_scheduler_get_type (void);
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void gst_scheduler_add_element (GstScheduler *sched, GstElement *element);
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void gst_scheduler_remove_element (GstScheduler *sched, GstElement *element);
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void gst_scheduler_marshal (GstScheduler *sched, GstMarshalFunc func, gpointer data);
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/* FIXME: make private? */
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GstElementStateReturn gst_scheduler_state_transition (GstScheduler *sched, GstElement *element, gint transition);
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void gst_scheduler_error (GstScheduler *sched, GstElement *element);
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void gst_scheduler_pad_link (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad);
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void gst_scheduler_pad_unlink (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad);
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void gst_scheduler_pad_push (GstScheduler *sched, GstRealPad *pad, GstData *data);
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void gst_scheduler_use_clock (GstScheduler *sched, GstClock *clock);
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void gst_scheduler_set_clock (GstScheduler *sched, GstClock *clock);
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GstClock* gst_scheduler_get_clock (GstScheduler *sched);
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void gst_scheduler_auto_clock (GstScheduler *sched);
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void gst_scheduler_show (GstScheduler *sched);
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G_END_DECLS
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#endif /* __GST_SCHEDULER_H__ */
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