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087dee1f62
Original commit message from CVS: This is an attempt at not segfaulting on errors but reporting some usefull info instead. - bin changes so errors can propagate. - changed the _FAST macros to _CAST because that is what they do. - removed all references to cothreads out of the core, they are really a scheduler issue, handler with a sched_private gpointer. - added a live buffer count, for debugging buffer leaks. - added error checking in gst_scheduler_state_transition this solves the "out of cothreads" problem. - GST_ELEMENT_NO_ENTRY == GST_ELEMENT_INFINITE_LOOP - added 2 private element flasg for use by the scheduler (_COTHREAD_STOPPING) is now - added scheduler entry points: - _yield : to create possible scheduling points. - _interrupt: to stop execution of an element. - _error: to signal en error condition to the scheduler. - improved error messages for pads. - signal gst_element_error where appropriate. - added the a new bin to the parent before entering it so one can reference its children. - queue memleak fixes on dispose. - added possible deadlock detection in queue (turned off be default) - GstBasicScheduler is a real class of its own now, hiding its internal variables. - GST_ELEMENT_IS_COTHREAD_STOPPING is gone. either call explicit _yield operations, or make a sane loop. - Better state change handling in filesrc. Better error reporting/recovery too. - updated core plugins. - detect non decoupled elements on scheduler boundries and error.
150 lines
5.6 KiB
C
150 lines
5.6 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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* gstschedulerr.h: Header for default schedulerr 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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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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#define GST_TYPE_SCHEDULER \
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(gst_scheduler_get_type())
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#define GST_SCHEDULER(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_SCHEDULER,GstScheduler))
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#define GST_SCHEDULER_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_SCHEDULER,GstSchedulerClass))
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#define GST_IS_SCHEDULER(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_SCHEDULER))
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#define GST_IS_SCHEDULER_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_SCHEDULER))
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#define GST_SCHED_PARENT(sched) ((sched)->parent)
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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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};
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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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GstElementStateReturn
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(*state_transition) (GstScheduler *sched, GstElement *element, gint transition);
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void (*lock_element) (GstScheduler *sched, GstElement *element);
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void (*unlock_element) (GstScheduler *sched, GstElement *element);
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void (*yield) (GstScheduler *sched, GstElement *element);
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void (*interrupt) (GstScheduler *sched, GstElement *element);
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void (*error) (GstScheduler *sched, GstElement *element);
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void (*pad_connect) (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad);
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void (*pad_disconnect) (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad);
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void (*pad_select) (GstScheduler *sched, GList *padlist);
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gboolean (*iterate) (GstScheduler *sched);
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/* for debugging */
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void (*show) (GstScheduler *sched);
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/* signals go here */
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};
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GType gst_scheduler_get_type (void);
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#define gst_scheduler_destroy(sched) gst_object_destroy(GST_OBJECT(sched))
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void gst_scheduler_setup (GstScheduler *sched);
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void gst_scheduler_reset (GstScheduler *sched);
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void gst_scheduler_add_element (GstScheduler *sched, GstElement *element);
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void gst_scheduler_remove_element (GstScheduler *sched, GstElement *element);
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GstElementStateReturn gst_scheduler_state_transition (GstScheduler *sched, GstElement *element, gint transition);
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void gst_scheduler_lock_element (GstScheduler *sched, GstElement *element);
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void gst_scheduler_unlock_element (GstScheduler *sched, GstElement *element);
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void gst_scheduler_yield (GstScheduler *sched, GstElement *element);
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void gst_scheduler_interrupt (GstScheduler *sched, GstElement *element);
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void gst_scheduler_error (GstScheduler *sched, GstElement *element);
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void gst_scheduler_pad_connect (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad);
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void gst_scheduler_pad_disconnect (GstScheduler *sched, GstPad *srcpad, GstPad *sinkpad);
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GstPad* gst_scheduler_pad_select (GstScheduler *sched, GList *padlist);
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gboolean gst_scheduler_iterate (GstScheduler *sched);
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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_SCHEDULERFACTORY \
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(gst_schedulerfactory_get_type ())
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#define GST_SCHEDULERFACTORY(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_SCHEDULERFACTORY, GstSchedulerFactory))
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#define GST_SCHEDULERFACTORY_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_SCHEDULERFACTORY, GstSchedulerFactoryClass))
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#define GST_IS_SCHEDULERFACTORY(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_SCHEDULERFACTORY))
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#define GST_IS_SCHEDULERFACTORY_CLASS(obj) \
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(G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_SCHEDULERFACTORY))
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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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};
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struct _GstSchedulerFactoryClass {
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GstPluginFeatureClass parent;
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};
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GType gst_schedulerfactory_get_type (void);
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GstSchedulerFactory* gst_schedulerfactory_new (const gchar *name, const gchar *longdesc, GType type);
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void gst_schedulerfactory_destroy (GstSchedulerFactory *factory);
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GstSchedulerFactory* gst_schedulerfactory_find (const gchar *name);
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GList* gst_schedulerfactory_get_list (void);
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GstScheduler* gst_schedulerfactory_create (GstSchedulerFactory *factory, GstElement *parent);
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GstScheduler* gst_schedulerfactory_make (const gchar *name, GstElement *parent);
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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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