gstreamer/gst/gstscheduler.h
Thomas Vander Stichele 3ffce00efc commiting wim's preliminary threaded work to a branch
Original commit message from CVS:
commiting wim's preliminary threaded work to a branch
2004-12-08 17:40:37 +00:00

146 lines
5.3 KiB
C

/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstscheduler.h: Header for default scheduler code
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GST_SCHEDULER_H__
#define __GST_SCHEDULER_H__
#include <glib.h>
#include <gst/gstelement.h>
#include <gst/gstbin.h>
#include <gst/gsttask.h>
G_BEGIN_DECLS
#define GST_TYPE_SCHEDULER (gst_scheduler_get_type ())
#define GST_SCHEDULER(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_SCHEDULER, GstScheduler))
#define GST_IS_SCHEDULER(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_SCHEDULER))
#define GST_SCHEDULER_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_SCHEDULER,GstSchedulerClass))
#define GST_IS_SCHEDULER_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_SCHEDULER))
#define GST_SCHEDULER_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_SCHEDULER, GstSchedulerClass))
typedef enum {
/* padding */
GST_SCHEDULER_FLAG_LAST = GST_OBJECT_FLAG_LAST + 4
} GstSchedulerFlags;
#define GST_SCHEDULER_PARENT(sched) ((sched)->parent)
#define GST_SCHEDULER_STATE(sched) ((sched)->state)
/*typedef struct _GstScheduler GstScheduler; */
/*typedef struct _GstSchedulerClass GstSchedulerClass; */
struct _GstScheduler {
GstObject object;
GstElement *parent;
gpointer _gst_reserved[GST_PADDING];
};
struct _GstSchedulerClass {
GstObjectClass parent_class;
/* virtual methods */
void (*setup) (GstScheduler *sched);
void (*reset) (GstScheduler *sched);
void (*add_element) (GstScheduler *sched, GstElement * element);
void (*remove_element) (GstScheduler *sched, GstElement * element);
GstTask* (*create_task) (GstScheduler *sched, GstTaskFunction func, gpointer data);
GstClockReturn (*clock_wait) (GstScheduler *sched, GstElement *element,
GstClockID id, GstClockTimeDiff *jitter);
/* for debugging */
void (*show) (GstScheduler *sched);
/* signals */
void (*object_sync) (GstScheduler *sched, GstClock *clock, GstObject *object,
GstClockID id);
gpointer _gst_reserved[GST_PADDING];
};
GType gst_scheduler_get_type (void);
void gst_scheduler_setup (GstScheduler *sched);
void gst_scheduler_reset (GstScheduler *sched);
GstTask* gst_scheduler_create_task (GstScheduler *sched, GstTaskFunction func, gpointer data);
GstClockReturn gst_scheduler_clock_wait (GstScheduler *sched, GstElement *element,
GstClockID id, GstClockTimeDiff *jitter);
void gst_scheduler_show (GstScheduler *sched);
/*
* creating schedulers
*
*/
#define GST_TYPE_SCHEDULER_FACTORY (gst_scheduler_factory_get_type ())
#define GST_SCHEDULER_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_SCHEDULER_FACTORY, GstSchedulerFactory))
#define GST_IS_SCHEDULER_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_SCHEDULER_FACTORY))
#define GST_SCHEDULER_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_SCHEDULER_FACTORY, GstSchedulerFactoryClass))
#define GST_IS_SCHEDULER_FACTORY_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_SCHEDULER_FACTORY))
#define GST_SCHEDULER_FACTORY_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_SCHEDULER_FACTORY, GstSchedulerFactoryClass))
/* change this to change the default scheduler */
#define GST_SCHEDULER_DEFAULT_NAME "thread"
typedef struct _GstSchedulerFactory GstSchedulerFactory;
typedef struct _GstSchedulerFactoryClass GstSchedulerFactoryClass;
struct _GstSchedulerFactory {
GstPluginFeature feature;
gchar *longdesc; /* long description of the scheduler (well, don't overdo it..) */
GType type; /* unique GType of the scheduler */
gpointer _gst_reserved[GST_PADDING];
};
struct _GstSchedulerFactoryClass {
GstPluginFeatureClass parent;
gpointer _gst_reserved[GST_PADDING];
};
GType gst_scheduler_factory_get_type (void);
gboolean gst_scheduler_register (GstPlugin *plugin, const gchar *name,
const gchar *longdesc, GType type);
GstSchedulerFactory* gst_scheduler_factory_new (const gchar *name, const gchar *longdesc, GType type);
void gst_scheduler_factory_destroy (GstSchedulerFactory *factory);
GstSchedulerFactory* gst_scheduler_factory_find (const gchar *name);
GstScheduler* gst_scheduler_factory_create (GstSchedulerFactory *factory, GstElement *parent);
GstScheduler* gst_scheduler_factory_make (const gchar *name, GstElement *parent);
void gst_scheduler_factory_set_default_name (const gchar* name);
G_CONST_RETURN gchar* gst_scheduler_factory_get_default_name (void);
G_END_DECLS
#endif /* __GST_SCHEDULER_H__ */