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a28d63431a
Original commit message from CVS: * gst/gstbin.h: removed ';' from the end of macro defs * docs/gst/gstreamer-docs.sgml: * docs/gst/gstreamer-sections.txt: * docs/gst/tmpl/.cvsignore: * gst/gstbus.h: * gst/gstelement.c: (gst_element_class_init), (gst_element_set_state), (activate_pads), (gst_element_save_thyself): * gst/gstevent.c: (gst_event_new_newsegment): * gst/gstevent.h: * gst/gstiterator.c: * gst/gstiterator.h: * gst/gstpad.c: * gst/gstprobe.h: * gst/gstutils.c: (gst_pad_query_convert): * gst/gstutils.h: fixed parameter name mismatches between source, header and docs added some more docs, resolved the last batch of unused elements in docs (now someone needs to doc them)
112 lines
4.1 KiB
C
112 lines
4.1 KiB
C
/* GStreamer
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* Copyright (C) 2004 Wim Taymans <wim@fluendo.com>
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*
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* gstiterator.h: Header for GstIterator
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#ifndef __GST_ITERATOR_H__
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#define __GST_ITERATOR_H__
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#include <glib-object.h> /* for GValue in the fold */
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#include <gst/gstconfig.h>
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G_BEGIN_DECLS
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typedef enum {
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GST_ITERATOR_DONE = 0, /* no more items in the iterator */
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GST_ITERATOR_OK = 1, /* item retrieved */
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GST_ITERATOR_RESYNC = 2, /* datastructures changed while iterating */
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GST_ITERATOR_ERROR = 3, /* some error happened */
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} GstIteratorResult;
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typedef struct _GstIterator GstIterator;
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typedef enum {
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GST_ITERATOR_ITEM_SKIP = 0, /* skip item */
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GST_ITERATOR_ITEM_PASS = 1, /* return item */
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GST_ITERATOR_ITEM_END = 2, /* stop after this item */
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} GstIteratorItem;
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typedef void (*GstIteratorDisposeFunction) (gpointer owner);
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typedef GstIteratorResult (*GstIteratorNextFunction) (GstIterator *it, gpointer *result);
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typedef GstIteratorItem (*GstIteratorItemFunction) (GstIterator *it, gpointer item);
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typedef void (*GstIteratorResyncFunction) (GstIterator *it);
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typedef void (*GstIteratorFreeFunction) (GstIterator *it);
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typedef gboolean (*GstIteratorFoldFunction) (gpointer item, GValue *ret, gpointer user_data);
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#define GST_ITERATOR(it) ((GstIterator*)(it))
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#define GST_ITERATOR_LOCK(it) (GST_ITERATOR(it)->lock)
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#define GST_ITERATOR_COOKIE(it) (GST_ITERATOR(it)->cookie)
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#define GST_ITERATOR_ORIG_COOKIE(it) (GST_ITERATOR(it)->master_cookie)
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struct _GstIterator {
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GstIteratorNextFunction next;
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GstIteratorItemFunction item;
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GstIteratorResyncFunction resync;
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GstIteratorFreeFunction free;
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GstIterator *pushed; /* pushed iterator */
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GMutex *lock;
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guint32 cookie; /* cookie of the iterator */
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guint32 *master_cookie; /* pointer to guint32 holding the cookie when this
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iterator was created */
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/*< private >*/
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gpointer _gst_reserved[GST_PADDING];
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};
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/* creating iterators */
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GstIterator* gst_iterator_new (guint size,
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GMutex *lock,
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guint32 *master_cookie,
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GstIteratorNextFunction next,
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GstIteratorItemFunction item,
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GstIteratorResyncFunction resync,
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GstIteratorFreeFunction free);
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GstIterator* gst_iterator_new_list (GMutex *lock,
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guint32 *master_cookie,
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GList **list,
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gpointer owner,
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GstIteratorItemFunction item,
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GstIteratorDisposeFunction free);
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/* using iterators */
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GstIteratorResult gst_iterator_next (GstIterator *it, gpointer *elem);
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void gst_iterator_resync (GstIterator *it);
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void gst_iterator_free (GstIterator *it);
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void gst_iterator_push (GstIterator *it, GstIterator *other);
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/* higher-order functions that operate on iterators */
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GstIterator* gst_iterator_filter (GstIterator *it, GCompareFunc func,
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gpointer user_data);
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GstIteratorResult gst_iterator_fold (GstIterator *iter,
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GstIteratorFoldFunction func,
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GValue *ret, gpointer user_data);
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GstIteratorResult gst_iterator_foreach (GstIterator *iter,
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GFunc func, gpointer user_data);
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gpointer gst_iterator_find_custom (GstIterator *it, GCompareFunc func,
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gpointer user_data);
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G_END_DECLS
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#endif /* __GST_ITERATOR_H__ */
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