mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-24 18:51:11 +00:00
ba5cecf321
Original commit message from CVS: * examples/Makefile.am: * examples/helloworld/helloworld.c: (event_loop), (main): * examples/queue/queue.c: (event_loop), (main): * examples/queue2/queue2.c: (main): Update a couple of the examples to work again. * gst/base/gstbasesink.c: (gst_base_sink_preroll_queue_empty), (gst_base_sink_preroll_queue_flush), (gst_base_sink_handle_event): Spelling corrections and extra debug. * gst/gstbin.c: (gst_bin_class_init), (gst_bin_init), (is_eos), (gst_bin_add_func), (bin_element_is_sink), (gst_bin_get_state), (gst_bin_change_state), (gst_bin_dispose), (bin_bus_handler): * gst/gstbin.h: * gst/gstpipeline.c: (gst_pipeline_init), (gst_pipeline_dispose), (gst_pipeline_change_state): * gst/gstpipeline.h: Move the bus handler for children to the GstBin, and create a separate bus for receiving messages from children to the one the bus sends 'upwards' on.
120 lines
4 KiB
C
120 lines
4 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>
|
|
#include <gst/gstiterator.h>
|
|
#include <gst/gstbus.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
GST_EXPORT 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(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_BIN))
|
|
#define GST_BIN_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_BIN, GstBinClass))
|
|
#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))
|
|
#define GST_BIN_CAST(obj) ((GstBin*)(obj))
|
|
|
|
/**
|
|
* GstBinFlags:
|
|
* @GST_BIN_FLAG_LAST: the last enum in the series of flags for bins.
|
|
* Derived classes can use this as first value in a list of flags.
|
|
*
|
|
* GstBinFlags are a set of flags specific to bins. Most are set/used
|
|
* internally. They can be checked using the GST_FLAG_IS_SET () macro,
|
|
* and (un)set using GST_FLAG_SET () and GST_FLAG_UNSET ().
|
|
*/
|
|
typedef enum {
|
|
/* padding */
|
|
GST_BIN_FLAG_LAST = GST_ELEMENT_FLAG_LAST + 5
|
|
} GstBinFlags;
|
|
|
|
/*typedef struct _GstBin GstBin; */
|
|
/*typedef struct _GstBinClass GstBinClass; */
|
|
|
|
#define GST_BIN_NUMCHILDREN(bin) (GST_BIN_CAST(bin)->numchildren);
|
|
#define GST_BIN_CHILDREN(bin) (GST_BIN_CAST(bin)->children);
|
|
#define GST_BIN_CHILDREN_COOKIE(bin) (GST_BIN_CAST(bin)->children_cookie);
|
|
|
|
struct _GstBin {
|
|
GstElement element;
|
|
|
|
/*< public >*/ /* with LOCK */
|
|
/* our children, subclass are supposed to update these
|
|
* fields to reflect their state with _iterate_*() */
|
|
gint numchildren;
|
|
GList *children;
|
|
guint32 children_cookie;
|
|
|
|
GstBus *child_bus; /* Bus we set on our children */
|
|
GList *eosed; /* list of elements that posted EOS */
|
|
|
|
/*< private >*/
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
struct _GstBinClass {
|
|
GstElementClass parent_class;
|
|
|
|
/*< private >*/
|
|
/* signals */
|
|
void (*element_added) (GstBin *bin, GstElement *child);
|
|
void (*element_removed) (GstBin *bin, GstElement *child);
|
|
|
|
/*< public >*/
|
|
/* virtual methods for subclasses */
|
|
gboolean (*add_element) (GstBin *bin, GstElement *element);
|
|
gboolean (*remove_element) (GstBin *bin, GstElement *element);
|
|
|
|
/*< private >*/
|
|
gpointer _gst_reserved[GST_PADDING];
|
|
};
|
|
|
|
GType gst_bin_get_type (void);
|
|
GstElement* gst_bin_new (const gchar *name);
|
|
|
|
/* add and remove elements from the bin */
|
|
gboolean gst_bin_add (GstBin *bin, GstElement *element);
|
|
gboolean gst_bin_remove (GstBin *bin, GstElement *element);
|
|
|
|
/* retrieve a single child */
|
|
GstElement* gst_bin_get_by_name (GstBin *bin, const gchar *name);
|
|
GstElement* gst_bin_get_by_name_recurse_up (GstBin *bin, const gchar *name);
|
|
GstElement* gst_bin_get_by_interface (GstBin *bin, GType interface);
|
|
|
|
/* retrieve multiple children */
|
|
GstIterator* gst_bin_iterate_elements (GstBin *bin);
|
|
GstIterator* gst_bin_iterate_recurse (GstBin *bin);
|
|
|
|
GstIterator* gst_bin_iterate_sinks (GstBin *bin);
|
|
GstIterator* gst_bin_iterate_all_by_interface (GstBin *bin, GType interface);
|
|
|
|
G_END_DECLS
|
|
|
|
|
|
#endif /* __GST_BIN_H__ */
|