mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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c287566d0c
Original commit message from CVS: Massive scheduling changes (again). Not entirely complete, but getting closer. Need to think about various scheduling plans that we might want to produce, and figure out the rules for what is legal, and how to get the results we need as far as the plan.
127 lines
3.4 KiB
C
127 lines
3.4 KiB
C
/* Gnome-Streamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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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_BIN_H__
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#define __GST_BIN_H__
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#include <gst/gstelement.h>
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#include <gst/cothreads.h>
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#ifdef __cplusplus
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extern "C" {
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#endif /* __cplusplus */
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extern GstElementDetails gst_bin_details;
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#define GST_TYPE_BIN \
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(gst_bin_get_type())
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#define GST_BIN(obj) \
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(GTK_CHECK_CAST((obj),GST_TYPE_BIN,GstBin))
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#define GST_BIN_CLASS(klass) \
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(GTK_CHECK_CLASS_CAST((klass),GST_TYPE_BIN,GstBinClass))
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#define GST_IS_BIN(obj) \
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(GTK_CHECK_TYPE((obj),GST_TYPE_BIN))
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#define GST_IS_BIN_CLASS(obj) \
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(GTK_CHECK_CLASS_TYPE((klass),GST_TYPE_BIN))
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typedef enum {
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// this bin is a manager of child elements, i.e. a pipeline or thread
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GST_BIN_FLAG_MANAGER = GST_ELEMENT_FLAG_LAST,
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// we prefer to have cothreads when its an option, over chain-based
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GST_BIN_FLAG_PREFER_COTHREADS,
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/* padding */
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GST_BIN_FLAG_LAST = GST_ELEMENT_FLAG_LAST + 4,
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} GstBinFlags;
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typedef struct _GstBin GstBin;
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typedef struct _GstBinClass GstBinClass;
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struct _GstBin {
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GstElement element;
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// our children
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gint numchildren;
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GList *children;
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// iteration state
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gboolean need_cothreads;
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GList *managed_elements;
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gint num_managed_elements;
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GList *entries;
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gint num_entries;
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cothread_context *threadcontext;
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gboolean use_cothreads;
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GList *outside_schedules;
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};
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struct _GstBinClass {
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GstElementClass parent_class;
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/* signals */
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void (*object_added) (GstObject *object, GstObject *child);
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/* change the state of elements of the given type */
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gboolean (*change_state_type) (GstBin *bin,
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GstElementState state,
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GtkType type);
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/* create a plan for the execution of the bin */
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void (*create_plan) (GstBin *bin);
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/* run a full iteration of operation */
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void (*iterate) (GstBin *bin);
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};
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GtkType gst_bin_get_type (void);
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GstElement* gst_bin_new (gchar *name);
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#define gst_bin_destroy(bin) gst_object_destroy(GST_OBJECT(bin))
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/* add and remove elements from the bin */
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void gst_bin_add (GstBin *bin,
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GstElement *element);
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void gst_bin_remove (GstBin *bin,
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GstElement *element);
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/* retrieve a single element or the list of children */
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GstElement* gst_bin_get_by_name (GstBin *bin,
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gchar *name);
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GList* gst_bin_get_list (GstBin *bin);
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void gst_bin_create_plan (GstBin *bin);
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gboolean gst_bin_set_state_type (GstBin *bin,
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GstElementState state,
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GtkType type);
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void gst_bin_iterate (GstBin *bin);
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// hack FIXME
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void gst_bin_use_cothreads (GstBin *bin,
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gboolean enabled);
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#ifdef __cplusplus
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}
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#endif /* __cplusplus */
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#endif /* __GST_BIN_H__ */
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