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/* 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 <gst/gstelement.h>
#include <gst/gstbin.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
extern GType _gst_schedule_type;
#define GST_TYPE_SCHEDULE (_gst_schedule_type)
# define GST_IS_SCHEDULE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_SCHEDULE))
# define GST_IS_SCHEDULE_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_SCHEDULE))
#define GST_SCHEDULE_FAST(obj) ((GstSchedule*)(obj))
#define GST_SCHEDULE_CLASS_FAST(klass) ((GstScheduleClass*)(klass))
#ifdef GST_TYPE_PARANOID
# define GST_SCHEDULE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_SCHEDULE, GstSchedule))
# define GST_SCHEDULE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_SCHEDULE, GstScheduleClass))
#else
# define GST_SCHEDULE GST_SCHEDULE_FAST
# define GST_SCHEDULE_CLASS GST_SCHEDULE_CLASS_FAST
#endif
#define GST_SCHED_PARENT(sched) ((sched)->parent)
//typedef struct _GstSchedule GstSchedule;
//typedef struct _GstScheduleClass GstScheduleClass;
typedef struct _GstScheduleChain GstScheduleChain;
struct _GstSchedule {
GstObject object;
GstElement *parent;
GList *elements;
gint num_elements;
GList *chains;
gint num_chains;
void (*add_element) (GstSchedule *sched, GstElement *element);
void (*remove_element) (GstSchedule *sched, GstElement *element);
void (*enable_element) (GstSchedule *sched, GstElement *element);
void (*disable_element) (GstSchedule *sched, GstElement *element);
void (*lock_element) (GstSchedule *sched, GstElement *element);
void (*unlock_element) (GstSchedule *sched, GstElement *element);
void (*pad_connect) (GstSchedule *sched, GstPad *srcpad, GstPad *sinkpad);
void (*pad_disconnect) (GstSchedule *sched, GstPad *srcpad, GstPad *sinkpad);
void (*pad_select) (GstSchedule *sched, GList *padlist);
gboolean (*iterate) (GstSchedule *sched);
};
struct _GstScheduleClass {
GstObjectClass parent_class;
};
#define GST_SCHEDULE_SAFETY(sched) if (sched)
//#define GST_SCHEDULE_SAFETY(sched)
#define GST_SCHEDULE_ADD_ELEMENT(sched,element) G_STMT_START{ \
GST_SCHEDULE_SAFETY(sched) { ((sched)->add_element((sched),(element))); } \
}G_STMT_END
#define GST_SCHEDULE_REMOVE_ELEMENT(sched,element) G_STMT_START{ \
GST_SCHEDULE_SAFETY(sched) { ((sched)->remove_element((sched),(element))); } \
}G_STMT_END
#define GST_SCHEDULE_ENABLE_ELEMENT(sched,element) G_STMT_START{ \
GST_SCHEDULE_SAFETY(sched) { ((sched)->enable_element((sched),(element))); } \
}G_STMT_END
#define GST_SCHEDULE_DISABLE_ELEMENT(sched,element) G_STMT_START{ \
GST_SCHEDULE_SAFETY(sched) { ((sched)->disable_element((sched),(element))); } \
}G_STMT_END
#define GST_SCHEDULE_LOCK_ELEMENT(sched,element) G_STMT_START{ \
GST_SCHEDULE_SAFETY(sched) { if ((sched)->lock_element != NULL) \
((sched)->lock_element((sched),(element))); } \
}G_STMT_END
#define GST_SCHEDULE_UNLOCK_ELEMENT(sched,element) G_STMT_START{ \
GST_SCHEDULE_SAFETY(sched) { if ((sched)->unlock_element != NULL) \
((sched)->unlock_element((sched),(element))); } \
}G_STMT_END
#define GST_SCHEDULE_PAD_CONNECT(sched,srcpad,sinkpad) G_STMT_START{ \
GST_SCHEDULE_SAFETY(sched) { ((sched)->pad_connect((sched),(srcpad),(sinkpad))); } \
}G_STMT_END
#define GST_SCHEDULE_PAD_DISCONNECT(sched,srcpad,sinkpad) G_STMT_START{ \
GST_SCHEDULE_SAFETY(sched) { ((sched)->pad_disconnect((sched),(srcpad),(sinkpad))); } \
}G_STMT_END
#define GST_SCHEDULE_ITERATE(sched) \
((sched)->iterate((sched)))
struct _GstScheduleChain {
GstSchedule *sched;
GList *disabled;
GList *elements;
gint num_elements;
GstElement *entry;
gint cothreaded_elements;
gboolean schedule;
};
GType gst_schedule_get_type (void);
GstSchedule* gst_schedule_new (GstElement *parent);
void gst_schedule_add_element (GstSchedule *sched, GstElement *element);
void gst_schedule_remove_element (GstSchedule *sched, GstElement *element);
void gst_schedule_enable_element (GstSchedule *sched, GstElement *element);
void gst_schedule_disable_element (GstSchedule *sched, GstElement *element);
void gst_schedule_pad_connect (GstSchedule *sched, GstPad *srcpad, GstPad *sinkpad);
void gst_schedule_pad_disconnect (GstSchedule *sched, GstPad *srcpad, GstPad *sinkpad);
GstPad* gst_schedule_pad_select (GstSchedule *sched, GList *padlist);
gboolean gst_schedule_iterate (GstSchedule *sched);
void gst_schedule_show (GstSchedule *sched);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GST_SCHEDULER_H__ */
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