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146 lines
5.3 KiB
C
146 lines
5.3 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/gstbin.h>
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#include <gst/gsttask.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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/* padding */
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GST_SCHEDULER_FLAG_LAST = GST_OBJECT_FLAG_LAST + 4
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} GstSchedulerFlags;
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#define GST_SCHEDULER_PARENT(sched) ((sched)->parent)
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#define GST_SCHEDULER_STATE(sched) ((sched)->state)
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/*typedef struct _GstScheduler GstScheduler; */
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/*typedef struct _GstSchedulerClass GstSchedulerClass; */
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struct _GstScheduler {
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GstObject object;
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GstElement *parent;
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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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void (*setup) (GstScheduler *sched);
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void (*reset) (GstScheduler *sched);
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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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GstTask* (*create_task) (GstScheduler *sched, GstTaskFunction func, gpointer data);
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GstClockReturn (*clock_wait) (GstScheduler *sched, GstElement *element,
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GstClockID id, GstClockTimeDiff *jitter);
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/* for debugging */
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void (*show) (GstScheduler *sched);
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/* signals */
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void (*object_sync) (GstScheduler *sched, GstClock *clock, GstObject *object,
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GstClockID id);
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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_setup (GstScheduler *sched);
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void gst_scheduler_reset (GstScheduler *sched);
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GstTask* gst_scheduler_create_task (GstScheduler *sched, GstTaskFunction func, gpointer data);
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GstClockReturn gst_scheduler_clock_wait (GstScheduler *sched, GstElement *element,
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GstClockID id, GstClockTimeDiff *jitter);
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void gst_scheduler_show (GstScheduler *sched);
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/*
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* creating schedulers
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*
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*/
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#define GST_TYPE_SCHEDULER_FACTORY (gst_scheduler_factory_get_type ())
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#define GST_SCHEDULER_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_SCHEDULER_FACTORY, GstSchedulerFactory))
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#define GST_IS_SCHEDULER_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_SCHEDULER_FACTORY))
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#define GST_SCHEDULER_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_SCHEDULER_FACTORY, GstSchedulerFactoryClass))
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#define GST_IS_SCHEDULER_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_SCHEDULER_FACTORY))
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#define GST_SCHEDULER_FACTORY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_SCHEDULER_FACTORY, GstSchedulerFactoryClass))
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/* change this to change the default scheduler */
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#define GST_SCHEDULER_DEFAULT_NAME "thread"
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typedef struct _GstSchedulerFactory GstSchedulerFactory;
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typedef struct _GstSchedulerFactoryClass GstSchedulerFactoryClass;
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struct _GstSchedulerFactory {
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GstPluginFeature feature;
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gchar *longdesc; /* long description of the scheduler (well, don't overdo it..) */
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GType type; /* unique GType of the scheduler */
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gpointer _gst_reserved[GST_PADDING];
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};
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struct _GstSchedulerFactoryClass {
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GstPluginFeatureClass parent;
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gpointer _gst_reserved[GST_PADDING];
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};
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GType gst_scheduler_factory_get_type (void);
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gboolean gst_scheduler_register (GstPlugin *plugin, const gchar *name,
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const gchar *longdesc, GType type);
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GstSchedulerFactory* gst_scheduler_factory_new (const gchar *name, const gchar *longdesc, GType type);
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void gst_scheduler_factory_destroy (GstSchedulerFactory *factory);
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GstSchedulerFactory* gst_scheduler_factory_find (const gchar *name);
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GstScheduler* gst_scheduler_factory_create (GstSchedulerFactory *factory, GstElement *parent);
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GstScheduler* gst_scheduler_factory_make (const gchar *name, GstElement *parent);
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void gst_scheduler_factory_set_default_name (const gchar* name);
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G_CONST_RETURN gchar* gst_scheduler_factory_get_default_name (void);
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G_END_DECLS
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#endif /* __GST_SCHEDULER_H__ */
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