gstreamer/gst/gstbin.h
Andy Wingo a8b84d8a57 gst/gstpad.c (_gst_real_pad_fixate_accumulator): s/pointer/boxed/.
Original commit message from CVS:
2004-02-05  Andy Wingo  <wingo@pobox.com>

* gst/gstpad.c (_gst_real_pad_fixate_accumulator):
s/pointer/boxed/.

* gst/gstmarshal.list (VOID:BOXED, BOXED:BOXED): New marshallers.

* gst/gstpad.c (gst_real_pad_class_init): Use a BOXED:BOXED
marshaller for ::fixate, and VOID:BOXED for ::caps-nego-failed,
with the type=GST_TYPE_CAPS. This allows language bindings to know
what kind of data they're dealing with.

* gst/gstcaps.c (_gst_caps_value_init): GBoxed values initialize
to NULL when g_value_init is called. GstCaps, which rolls its own
type implementation, now does the same instead of allocating empty
caps.
(_gst_caps_initialize, _gst_caps_collect_value,
_gst_caps_lcopy_value): Provide collect_value and lcopy_value type
table methods. This allows G_VALUE_COLLECT to work.

2004-02-05  Andy Wingo  <wingo@pobox.com>

* configure.ac:
* testsuite/Makefile.am (SUBDIRS):
* testsuite/ghostpads/Makefile.am:
* testsuite/ghostpads/ghostpads.c: A new test for ghost pads.

* gst/gstpad.c (gst_pad_add_ghost_pad, gst_pad_remove_ghost_pad):
These two routines are the only ones that set
GST_GPAD_REALPAD(gpad), the ghost pad list, and the ghost pad's
pad template. They should be made static, depending on ABI needs.
(gst_real_pad_dispose): Handle the case of ghost pads without a
parent. Assert after dealing with ghost pads that the ghost pad
list is empty.
(gst_ghost_pad_class_init): New property added, ::real-pad. Can be
set after creation.
(gst_ghost_pad_dispose): Set ::real-pad to NULL.
(gst_ghost_pad_set_property, gst_ghost_pad_get_property): New
functions. set_property will call add_ghost_pad/remove_ghost_pad
as appropriate.
(gst_ghost_pad_new): All the work is offloaded to g_object_new.

* gst/gstelement.c (gst_element_add_pad): Handle ghost pads as well.
(gst_element_add_ghost_pad): Remove code duplicated from _add_pad.
(gst_element_remove_pad): Handle ghost pads as well.
(gst_element_remove_ghost_pad): Deprecated (could be removed,
depending on API-stability needs).

2004-02-05  Andy Wingo  <wingo@pobox.com>

* gst/gstbin.[ch]: (gst_bin_get_by_interface): GTypes are scalars,
of course they're const
2004-02-05 13:51:26 +00:00

132 lines
4.3 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>
G_BEGIN_DECLS
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(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))
typedef void (*GstBinPrePostIterateFunction) (GstBin *bin, gpointer user_data);
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;
GstElementState child_states[GST_NUM_STATES];
gpointer _gst_reserved[GST_PADDING];
};
struct _GstBinClass {
GstElementClass parent_class;
/* vtable */
void (*add_element) (GstBin *bin, GstElement *element);
void (*remove_element) (GstBin *bin, GstElement *element);
void (*child_state_change) (GstBin *bin, GstElementState oldstate,
GstElementState newstate, GstElement *element);
/* run a full iteration of operation */
gboolean (*iterate) (GstBin *bin);
/* signals */
void (*element_added) (GstBin *bin, GstElement *child);
void (*element_removed) (GstBin *bin, GstElement *child);
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 */
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);
void gst_bin_remove_many (GstBin *bin, GstElement *element_1, ...);
/* 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);
G_CONST_RETURN GList*
gst_bin_get_list (GstBin *bin);
GstElement* gst_bin_get_by_interface (GstBin *bin, GType interface);
GList * gst_bin_get_all_by_interface (GstBin *bin, GType interface);
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);
GstElementStateReturn gst_bin_sync_children_state (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);
void gst_bin_set_pre_iterate_function (GstBin *bin,
GstBinPrePostIterateFunction func,
gpointer user_data);
void gst_bin_set_post_iterate_function (GstBin *bin,
GstBinPrePostIterateFunction func,
gpointer user_data);
G_END_DECLS
#endif /* __GST_BIN_H__ */