mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-06-16 04:50:38 +00:00
70d2a801d9
Original commit message from CVS: 2005-03-01 Andy Wingo <wingo@pobox.com> * tests/complexity.c: Adjust to lack of gst_bin_iterate, boolean link return values. * gst/elements/gsttee.c, gst/elements/gsttee.h: I am the master of do-nothing plugins! Fear the dev-zero! * gst/elements/gstelements.c * gst/elements/Makefile.am: Add tee back to gstelements. * gst/gstutils.h * gst/gstutils.c (gst_pad_proxy_getcaps, gst_pad_proxy_setcaps): Resurrect from the dead. Use gst_iterator_fold to be threadsafe. * gst/gstiterator.h (GstIteratorFoldFunction): Return a bool. * gst/gstiterator.c (gst_iterator_fold): Only continue folding as long as the fold function returns TRUE. Add a bunch o docs. (gst_iterator_foreach): Add docs about when the iterator will be freed. (gst_iterator_find_custom): Make more efficient because of the bool-return-value thing. * check/gst/gstiterator.c (add_fold_func): Adapt to new fold-funcs-returning-bool policy. * gst/gstutils.h: * gst/gstutils.c (gst_element_link, gst_element_link_many) (gst_element_link_filtered, gst_element_link_pads) (gst_element_link_pads_filtered): It seems Wim changed the return type to booleans internally. Assume he knows what he's doing and change the prototypes as well.
109 lines
4 KiB
C
109 lines
4 KiB
C
/* GStreamer
|
|
* Copyright (C) 2004 Wim Taymans <wim@fluendo.com>
|
|
*
|
|
* gstiterator.h: Header for GstIterator
|
|
*
|
|
* 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_ITERATOR_H__
|
|
#define __GST_ITERATOR_H__
|
|
|
|
#include <glib.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
typedef enum {
|
|
GST_ITERATOR_DONE = 0, /* no more items in the iterator */
|
|
GST_ITERATOR_OK = 1, /* item retrieved */
|
|
GST_ITERATOR_RESYNC = 2, /* datastructures changed while iterating */
|
|
GST_ITERATOR_ERROR = 3, /* some error happened */
|
|
} GstIteratorResult;
|
|
|
|
typedef struct _GstIterator GstIterator;
|
|
|
|
typedef enum {
|
|
GST_ITERATOR_ITEM_SKIP = 0, /* skip item */
|
|
GST_ITERATOR_ITEM_PASS = 1, /* return item */
|
|
GST_ITERATOR_ITEM_END = 2, /* stop after this item */
|
|
} GstIteratorItem;
|
|
|
|
typedef void (*GstIteratorDisposeFunction) (gpointer owner);
|
|
|
|
typedef GstIteratorResult (*GstIteratorNextFunction) (GstIterator *it, gpointer *result);
|
|
typedef GstIteratorItem (*GstIteratorItemFunction) (GstIterator *it, gpointer item);
|
|
typedef void (*GstIteratorResyncFunction) (GstIterator *it);
|
|
typedef void (*GstIteratorFreeFunction) (GstIterator *it);
|
|
|
|
typedef gboolean (*GstIteratorFoldFunction) (gpointer item, GValue *ret, gpointer user_data);
|
|
|
|
#define GST_ITERATOR(it) ((GstIterator*)(it))
|
|
#define GST_ITERATOR_LOCK(it) (GST_ITERATOR(it)->lock)
|
|
#define GST_ITERATOR_COOKIE(it) (GST_ITERATOR(it)->cookie)
|
|
#define GST_ITERATOR_ORIG_COOKIE(it) (GST_ITERATOR(it)->master_cookie)
|
|
|
|
struct _GstIterator {
|
|
GstIteratorNextFunction next;
|
|
GstIteratorItemFunction item;
|
|
GstIteratorResyncFunction resync;
|
|
GstIteratorFreeFunction free;
|
|
|
|
GstIterator *pushed; /* pushed iterator */
|
|
|
|
GMutex *lock;
|
|
guint32 cookie; /* cookie of the iterator */
|
|
guint32 *master_cookie; /* pointer to guint32 holding the cookie when this
|
|
iterator was created */
|
|
};
|
|
|
|
/* creating iterators */
|
|
GstIterator* gst_iterator_new (guint size,
|
|
GMutex *lock,
|
|
guint32 *master_cookie,
|
|
GstIteratorNextFunction next,
|
|
GstIteratorItemFunction item,
|
|
GstIteratorResyncFunction resync,
|
|
GstIteratorFreeFunction free);
|
|
|
|
GstIterator* gst_iterator_new_list (GMutex *lock,
|
|
guint32 *master_cookie,
|
|
GList **list,
|
|
gpointer owner,
|
|
GstIteratorItemFunction item,
|
|
GstIteratorDisposeFunction free);
|
|
|
|
/* using iterators */
|
|
GstIteratorResult gst_iterator_next (GstIterator *it, gpointer *result);
|
|
void gst_iterator_resync (GstIterator *it);
|
|
void gst_iterator_free (GstIterator *it);
|
|
|
|
void gst_iterator_push (GstIterator *it, GstIterator *other);
|
|
|
|
/* higher-order functions that operate on iterators */
|
|
GstIterator* gst_iterator_filter (GstIterator *it, GCompareFunc func,
|
|
gpointer user_data);
|
|
GstIteratorResult gst_iterator_fold (GstIterator *iter,
|
|
GstIteratorFoldFunction func,
|
|
GValue *ret, gpointer user_data);
|
|
GstIteratorResult gst_iterator_foreach (GstIterator *iter,
|
|
GFunc func, gpointer user_data);
|
|
gpointer gst_iterator_find_custom (GstIterator *it, GCompareFunc func,
|
|
gpointer user_data);
|
|
|
|
G_END_DECLS
|
|
|
|
#endif /* __GST_ITERATOR_H__ */
|