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78 lines
2.6 KiB
C
78 lines
2.6 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.h>
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G_BEGIN_DECLS
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typedef enum {
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GST_ITERATOR_DONE = 0,
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GST_ITERATOR_OK = 1,
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GST_ITERATOR_RESYNC = 2,
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GST_ITERATOR_ERROR = 3,
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} GstIteratorResult;
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typedef struct _GstIterator GstIterator;
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typedef GstIteratorResult (*GstIteratorNextFunction) (GstIterator *it, gpointer *result);
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typedef void (*GstIteratorResyncFunction) (GstIterator *it);
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typedef void (*GstIteratorFreeFunction) (GstIterator *it);
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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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GstIteratorResyncFunction resync;
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GstIteratorFreeFunction free;
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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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};
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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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GstIteratorResyncFunction resync,
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GstIteratorFreeFunction free);
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GstIteratorResult gst_iterator_next (GstIterator *it, gpointer *result);
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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_foreach (GstIterator *it, GFunc function,
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gpointer user_data);
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gpointer gst_iterator_find_custom (GstIterator *it, gpointer user_data,
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GCompareFunc func);
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GstIterator* gst_iterator_filter (GstIterator *it, gpointer user_data,
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GCompareFunc func);
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G_END_DECLS
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#endif /* __GST_ITERATOR_H__ */
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