gstreamer/gst/gstbin.h
Ronald S. Bultje d8d03b6b98 docs/pwg/advanced-types.xml: Fix description for buffer-frames=0.
Original commit message from CVS:
* docs/pwg/advanced-types.xml:
Fix description for buffer-frames=0.
* docs/gst/tmpl/gstbin.sgml:
* gst/gstbin.c: (gst_bin_child_state_change_func),
(gst_bin_change_state), (gst_bin_change_state_norecurse):
* gst/gstbin.h:
* testsuite/threads/Makefile.am:
* testsuite/threads/threadi.c: (cb_timeout), (cb_quit), (cb_eos),
(cb_state), (cb_play), (main):
Fix non-recursive state changes to *really* change the state
of the object, and not just call parent_class->state_change.
Fix a lot of lockups caused by this. Fixes . Add test
for the problem. Also enable test to show  (fixed).
* gst/gstthread.c: (gst_thread_change_state),
(gst_thread_child_state_change):
Don't exit the thread if we go to NULL and are inside thread
context. Instead, return control to the main thread context
and exit from there.
* gst/gstelement.c: (gst_element_disable_threadsafe_properties):
Don't unset virtual functions, since those may still be used.
That's not necessarily correct, but suffices for now.
* configure.ac:
* testsuite/Makefile.am:
* testsuite/pad/Makefile.am:
* testsuite/pad/chainnopull.c: (gst_test_sink_class_init),
(gst_test_sink_base_init), (gst_test_sink_chain),
(gst_test_sink_init), (main):
* testsuite/pad/getnopush.c: (gst_test_src_class_init),
(gst_test_src_base_init), (gst_test_src_get), (gst_test_src_init),
(main):
* testsuite/pad/link.c: (gst_test_element_class_init),
(gst_test_element_base_init), (gst_test_src_get),
(gst_test_src_loop), (gst_test_src_init), (gst_test_filter_chain),
(gst_test_filter_loop), (gst_test_filter_init),
(gst_test_sink_chain), (gst_test_sink_loop), (gst_test_sink_init),
(cb_error), (main):
Add tests to show . Pass, but should fail (currently
disabled from the testsuite).
* gst/gstscheduler.c: (gst_scheduler_dispose):
Dereference child schedulers on dispose ().
* testsuite/bytestream/filepadsink.c: (gst_fp_sink_init):
Fix typo.
* testsuite/threads/thread.c: (main):
Add more debug.
2005-01-31 15:51:19 +00:00

136 lines
4.8 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
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))
/**
* GstBinFlags:
* @GST_BIN_FLAG_MANAGER: this bin is a manager of child elements, i.e.
* a pipeline or thread.
* @GST_BIN_SELF_SCHEDULABLE: the bin iterates itself.
* @GST_BIN_FLAG_PREFER_COTHREADS: we prefer to have cothreads when its
* an option, over chain-based.
* @GST_BIN_FLAG_FIXED_CLOCK: bin has one clock that cannot be changed.
* @GST_BIN_STATE_LOCKED: indicator that we are in a non-recursive
* state-change on the bin, or that kids should not change parent state.
* Both are internally used to prevent infinitely recursive loops of
* state changes. Since they are mutually exclusive and serve the same
* purpose, we use the same flag for them.
* @GST_BIN_FLAG_LAST: the last enum in the series of flags in a bin,
* 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 {
GST_BIN_FLAG_MANAGER = GST_ELEMENT_FLAG_LAST,
GST_BIN_SELF_SCHEDULABLE,
GST_BIN_FLAG_PREFER_COTHREADS,
GST_BIN_FLAG_FIXED_CLOCK,
GST_BIN_STATE_LOCKED,
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);
G_END_DECLS
#endif /* __GST_BIN_H__ */