mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-23 18:21:04 +00:00
133 lines
4.1 KiB
C
133 lines
4.1 KiB
C
/* GStreamer
|
|
* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
|
|
* 2000 Wim Taymans <wtay@chello.be>
|
|
*
|
|
* gstbin.h: Header for GstBin container object
|
|
*
|
|
* 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_BIN_H__
|
|
#define __GST_BIN_H__
|
|
|
|
#include <gst/gstelement.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif /* __cplusplus */
|
|
|
|
extern GstElementDetails gst_bin_details;
|
|
extern GType _gst_bin_type;
|
|
|
|
#define GST_TYPE_BIN (_gst_bin_type)
|
|
# define GST_IS_BIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_BIN))
|
|
# define GST_IS_BIN_CLASS(obj) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_BIN))
|
|
|
|
#define GST_BIN_CAST(obj) ((GstBin*)(obj))
|
|
#define GST_BIN_CLASS_CAST(klass) ((GstBinClass*)(klass))
|
|
|
|
#ifdef GST_TYPE_PARANOID
|
|
# define GST_BIN(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_BIN, GstBin))
|
|
# define GST_BIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_BIN, GstBinClass))
|
|
#else
|
|
# define GST_BIN GST_BIN_CAST
|
|
# define GST_BIN_CLASS GST_BIN_CLASS_CAST
|
|
#endif
|
|
|
|
typedef enum {
|
|
/* this bin is a manager of child elements, i.e. a pipeline or thread */
|
|
GST_BIN_FLAG_MANAGER = GST_ELEMENT_FLAG_LAST,
|
|
|
|
/* this bin iterates itself */
|
|
GST_BIN_SELF_SCHEDULABLE,
|
|
|
|
/* we prefer to have cothreads when its an option, over chain-based */
|
|
GST_BIN_FLAG_PREFER_COTHREADS,
|
|
|
|
GST_BIN_FLAG_FIXED_CLOCK,
|
|
|
|
/* padding */
|
|
GST_BIN_FLAG_LAST = GST_ELEMENT_FLAG_LAST + 5,
|
|
} GstBinFlags;
|
|
|
|
/*typedef struct _GstBin GstBin; */
|
|
/*typedef struct _GstBinClass GstBinClass; */
|
|
|
|
struct _GstBin {
|
|
GstElement element;
|
|
|
|
/* our children */
|
|
gint numchildren;
|
|
GList *children;
|
|
|
|
GMutex *iterate_mutex;
|
|
GCond *iterate_cond;
|
|
|
|
GstElementState child_states[GST_NUM_STATES];
|
|
|
|
gpointer sched_private;
|
|
};
|
|
|
|
struct _GstBinClass {
|
|
GstElementClass parent_class;
|
|
|
|
/* signals */
|
|
void (*object_added) (GstObject *object, GstObject *child);
|
|
void (*object_removed) (GstObject *object, GstObject *child);
|
|
|
|
/* change the state of elements of the given type */
|
|
gboolean (*change_state_type) (GstBin *bin,
|
|
GstElementState state,
|
|
GType type);
|
|
/* run a full iteration of operation */
|
|
gboolean (*iterate) (GstBin *bin);
|
|
};
|
|
|
|
GType gst_bin_get_type (void);
|
|
GstElement* gst_bin_new (const gchar *name);
|
|
#define gst_bin_destroy(bin) gst_object_destroy(GST_OBJECT(bin))
|
|
|
|
/* add and remove elements from the bin */
|
|
void gst_bin_add (GstBin *bin, GstElement *element);
|
|
void gst_bin_add_many (GstBin *bin, GstElement *element_1, ...);
|
|
void gst_bin_remove (GstBin *bin, GstElement *element);
|
|
|
|
/* retrieve a single element or the list of children */
|
|
GstElement* gst_bin_get_by_name (GstBin *bin, const gchar *name);
|
|
GstElement* gst_bin_get_by_name_recurse_up (GstBin *bin, const gchar *name);
|
|
const GList* gst_bin_get_list (GstBin *bin);
|
|
|
|
gboolean gst_bin_set_state_type (GstBin *bin, GstElementState state, GType type);
|
|
|
|
gboolean gst_bin_iterate (GstBin *bin);
|
|
|
|
void gst_bin_use_clock (GstBin *bin, GstClock *clock);
|
|
GstClock* gst_bin_get_clock (GstBin *bin);
|
|
void gst_bin_auto_clock (GstBin *bin);
|
|
|
|
/* internal */
|
|
/* one of our childs signaled a state change */
|
|
void gst_bin_child_state_change (GstBin *bin, GstElementState oldstate,
|
|
GstElementState newstate, GstElement *child);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif /* __cplusplus */
|
|
|
|
|
|
#endif /* __GST_BIN_H__ */
|
|
|