gstreamer/gst/gstscheduler.h
Wim Taymans e7f54b1e74 - Added a function to get the currently executing cothread
Original commit message from CVS:
- Added a function to get the currently executing cothread
- Removed some useless includes
- _interrupt now returns a boolean so the behaviour after the interrupt
can be controlled by the scheduler.
- Added a better way to set/get the default scheduler.
- make thread and pipeline get the default scheduler.
2001-12-27 00:47:41 +00:00

161 lines
6.1 KiB
C

/* GStreamer
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
* 2000 Wim Taymans <wtay@chello.be>
*
* gstschedulerr.h: Header for default schedulerr 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>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#define GST_TYPE_SCHEDULER \
(gst_scheduler_get_type())
#define GST_SCHEDULER(obj) \
(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SCHEDULER,GstScheduler))
#define GST_SCHEDULER_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SCHEDULER,GstSchedulerClass))
#define GST_IS_SCHEDULER(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SCHEDULER))
#define GST_IS_SCHEDULER_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SCHEDULER))
#define GST_SCHEDULER_PARENT(sched) ((sched)->parent)
#define GST_SCHEDULER_STATE(sched) ((sched)->state)
/*typedef struct _GstScheduler GstScheduler; */
/*typedef struct _GstSchedulerClass GstSchedulerClass; */
typedef enum {
GST_SCHEDULER_STATE_NONE,
GST_SCHEDULER_STATE_RUNNING,
GST_SCHEDULER_STATE_STOPPED,
GST_SCHEDULER_STATE_ERROR,
} GstSchedulerState;
struct _GstScheduler {
GstObject object;
GstElement *parent;
GstSchedulerState state;
};
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);
GstElementStateReturn (*state_transition) (GstScheduler *sched, GstElement *element, gint transition);
void (*lock_element) (GstScheduler *sched, GstElement *element);
void (*unlock_element) (GstScheduler *sched, GstElement *element);
void (*yield) (GstScheduler *sched, GstElement *element);
gboolean (*interrupt) (GstScheduler *sched, GstElement *element);
void (*error) (GstScheduler *sched, GstElement *element);
void (*pad_connect) (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad);
void (*pad_disconnect) (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad);
void (*pad_select) (GstScheduler *sched, GList *padlist);
GstSchedulerState (*iterate) (GstScheduler *sched);
/* for debugging */
void (*show) (GstScheduler *sched);
/* signals go here */
};
GType gst_scheduler_get_type (void);
#define gst_scheduler_destroy(sched) gst_object_destroy(GST_OBJECT(sched))
void gst_scheduler_setup (GstScheduler *sched);
void gst_scheduler_reset (GstScheduler *sched);
void gst_scheduler_add_element (GstScheduler *sched, GstElement *element);
void gst_scheduler_remove_element (GstScheduler *sched, GstElement *element);
GstElementStateReturn gst_scheduler_state_transition (GstScheduler *sched, GstElement *element, gint transition);
void gst_scheduler_lock_element (GstScheduler *sched, GstElement *element);
void gst_scheduler_unlock_element (GstScheduler *sched, GstElement *element);
void gst_scheduler_yield (GstScheduler *sched, GstElement *element);
gboolean gst_scheduler_interrupt (GstScheduler *sched, GstElement *element);
void gst_scheduler_error (GstScheduler *sched, GstElement *element);
void gst_scheduler_pad_connect (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad);
void gst_scheduler_pad_disconnect (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad);
GstPad* gst_scheduler_pad_select (GstScheduler *sched, GList *padlist);
gboolean gst_scheduler_iterate (GstScheduler *sched);
void gst_scheduler_show (GstScheduler *sched);
/*
* creating schedulers
*
*/
#define GST_TYPE_SCHEDULERFACTORY \
(gst_schedulerfactory_get_type ())
#define GST_SCHEDULERFACTORY(obj) \
(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_SCHEDULERFACTORY, GstSchedulerFactory))
#define GST_SCHEDULERFACTORY_CLASS(klass) \
(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_SCHEDULERFACTORY, GstSchedulerFactoryClass))
#define GST_IS_SCHEDULERFACTORY(obj) \
(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_SCHEDULERFACTORY))
#define GST_IS_SCHEDULERFACTORY_CLASS(obj) \
(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_SCHEDULERFACTORY))
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 */
};
struct _GstSchedulerFactoryClass {
GstPluginFeatureClass parent;
};
GType gst_schedulerfactory_get_type (void);
GstSchedulerFactory* gst_schedulerfactory_new (const gchar *name, const gchar *longdesc, GType type);
void gst_schedulerfactory_destroy (GstSchedulerFactory *factory);
GstSchedulerFactory* gst_schedulerfactory_find (const gchar *name);
GList* gst_schedulerfactory_get_list (void);
GstScheduler* gst_schedulerfactory_create (GstSchedulerFactory *factory, GstElement *parent);
GstScheduler* gst_schedulerfactory_make (const gchar *name, GstElement *parent);
void gst_schedulerfactory_set_default_name (const gchar* name);
const gchar* gst_schedulerfactory_get_default_name (void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_SCHEDULER_H__ */