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b93de9e922
Original commit message from CVS: Docs updates Changed the cothread to use sigjmp_buf removed some unused methods. Some code cleanups.
147 lines
4.9 KiB
C
147 lines
4.9 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 <gst/gstelement.h>
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#include <gst/gstbin.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#define GST_TYPE_SCHEDULE \
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(gst_schedule_get_type())
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#define GST_SCHEDULE(obj) \
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(GTK_CHECK_CAST((obj),GST_TYPE_SCHEDULE,GstSchedule))
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#define GST_SCHEDULE_CLASS(klass) \
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(GTK_CHECK_CLASS_CAST((klass),GST_TYPE_SCHEDULE,GstScheduleClass))
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#define GST_IS_SCHEDULE(obj) \
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(GTK_CHECK_TYPE((obj),GST_TYPE_SCHEDULE))
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#define GST_IS_SCHEDULE_CLASS(klass) \
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(GTK_CHECK_CLASS_TYPE((klass),GST_TYPE_SCHEDULE))
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#define GST_SCHED_PARENT(sched) ((sched)->parent)
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//typedef struct _GstSchedule GstSchedule;
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//typedef struct _GstScheduleClass GstScheduleClass;
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typedef struct _GstScheduleChain GstScheduleChain;
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struct _GstSchedule {
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GstObject object;
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GstElement *parent;
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GList *elements;
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gint num_elements;
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GList *chains;
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gint num_chains;
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void (*add_element) (GstSchedule *sched, GstElement *element);
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void (*remove_element) (GstSchedule *sched, GstElement *element);
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void (*enable_element) (GstSchedule *sched, GstElement *element);
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void (*disable_element) (GstSchedule *sched, GstElement *element);
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void (*lock_element) (GstSchedule *sched, GstElement *element);
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void (*unlock_element) (GstSchedule *sched, GstElement *element);
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void (*pad_connect) (GstSchedule *sched, GstPad *srcpad, GstPad *sinkpad);
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void (*pad_disconnect) (GstSchedule *sched, GstPad *srcpad, GstPad *sinkpad);
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gboolean (*iterate) (GstSchedule *sched);
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};
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struct _GstScheduleClass {
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GstObjectClass parent_class;
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};
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#define GST_SCHEDULE_SAFETY(sched) if (sched)
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//#define GST_SCHEDULE_SAFETY(sched)
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#define GST_SCHEDULE_ADD_ELEMENT(sched,element) G_STMT_START{ \
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GST_SCHEDULE_SAFETY(sched) { ((sched)->add_element((sched),(element))); } \
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}G_STMT_END
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#define GST_SCHEDULE_REMOVE_ELEMENT(sched,element) G_STMT_START{ \
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GST_SCHEDULE_SAFETY(sched) { ((sched)->remove_element((sched),(element))); } \
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}G_STMT_END
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#define GST_SCHEDULE_ENABLE_ELEMENT(sched,element) G_STMT_START{ \
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GST_SCHEDULE_SAFETY(sched) { ((sched)->enable_element((sched),(element))); } \
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}G_STMT_END
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#define GST_SCHEDULE_DISABLE_ELEMENT(sched,element) G_STMT_START{ \
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GST_SCHEDULE_SAFETY(sched) { ((sched)->disable_element((sched),(element))); } \
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}G_STMT_END
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#define GST_SCHEDULE_LOCK_ELEMENT(sched,element) G_STMT_START{ \
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GST_SCHEDULE_SAFETY(sched) { if ((sched)->lock_element != NULL) \
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((sched)->lock_element((sched),(element))); } \
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}G_STMT_END
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#define GST_SCHEDULE_UNLOCK_ELEMENT(sched,element) G_STMT_START{ \
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GST_SCHEDULE_SAFETY(sched) { if ((sched)->unlock_element != NULL) \
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((sched)->unlock_element((sched),(element))); } \
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}G_STMT_END
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#define GST_SCHEDULE_PAD_CONNECT(sched,srcpad,sinkpad) G_STMT_START{ \
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GST_SCHEDULE_SAFETY(sched) { ((sched)->pad_connect((sched),(srcpad),(sinkpad))); } \
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}G_STMT_END
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#define GST_SCHEDULE_PAD_DISCONNECT(sched,srcpad,sinkpad) G_STMT_START{ \
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GST_SCHEDULE_SAFETY(sched) { ((sched)->pad_disconnect((sched),(srcpad),(sinkpad))); } \
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}G_STMT_END
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#define GST_SCHEDULE_ITERATE(sched) \
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((sched)->iterate((sched)))
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struct _GstScheduleChain {
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GstSchedule *sched;
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GList *disabled;
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GList *elements;
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gint num_elements;
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GstElement *entry;
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gint cothreaded_elements;
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gboolean schedule;
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};
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GtkType gst_schedule_get_type (void);
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GstSchedule* gst_schedule_new (GstElement *parent);
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void gst_schedule_add_element (GstSchedule *sched, GstElement *element);
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void gst_schedule_remove_element (GstSchedule *sched, GstElement *element);
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void gst_schedule_enable_element (GstSchedule *sched, GstElement *element);
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void gst_schedule_disable_element (GstSchedule *sched, GstElement *element);
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void gst_schedule_pad_connect (GstSchedule *sched, GstPad *srcpad, GstPad *sinkpad);
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void gst_schedule_pad_disconnect (GstSchedule *sched, GstPad *srcpad, GstPad *sinkpad);
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gboolean gst_schedule_iterate (GstSchedule *sched);
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void gst_schedule_show (GstSchedule *sched);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __GST_SCHEDULER_H__ */
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