mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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fdaa2307da
Original commit message from CVS: A very small change to make eos somewhat work. no inner bins are checked. When an element fires EOS, the chain with that element is removed from the scheduler (marked inactive). If all chains are inactive, the bin fires EOS.
147 lines
3.8 KiB
C
147 lines
3.8 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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* gstbin.h: Header for GstBin container object
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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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typedef struct __GstBinChain _GstBinChain;
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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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gint num_eos_providers;
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GList *eos_providers;
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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 *chains;
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gint num_chains;
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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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};
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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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void (*object_removed) (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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void (*schedule) (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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struct __GstBinChain {
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GList *elements;
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gint num_elements;
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GList *entries;
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gboolean need_cothreads;
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gboolean need_scheduling;
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};
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GtkType gst_bin_get_type (void);
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GstElement* gst_bin_new (const 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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const 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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void gst_bin_schedule (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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