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102 lines
3.2 KiB
C
102 lines
3.2 KiB
C
/* GStreamer
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* Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>
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* 2000 Wim Taymans <wim.taymans@chello.be>
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*
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* gsttimecache.h: Header for GstTimeCache
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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_TIME_CACHE_H__
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#define __GST_TIME_CACHE_H__
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#include <gst/gstobject.h>
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G_BEGIN_DECLS
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#define GST_TYPE_TIME_CACHE (gst_time_cache_get_type ())
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#define GST_TIME_CACHE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_TIME_CACHE, GstTimeCache))
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#define GST_TIME_CACHE_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_TIME_CACHE, GstTimeCacheClass))
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#define GST_IS_TIME_CACHE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_TIME_CACHE))
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#define GST_IS_TIME_CACHE_CLASS(obj) (GST_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_TIME_CACHE))
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typedef struct _GstTimeCacheEntry GstTimeCacheEntry;
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typedef struct _GstTimeCacheGroup GstTimeCacheGroup;
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typedef struct _GstTimeCache GstTimeCache;
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typedef struct _GstTimeCacheClass GstTimeCacheClass;
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typedef enum {
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GST_TIME_CACHE_UNKNOWN,
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GST_TIME_CACHE_CERTAIN,
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GST_TIME_CACHE_FUZZY_LOCATION,
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GST_TIME_CACHE_FUZZY_TIMESTAMP,
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GST_TIME_CACHE_FUZZY
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} GstTimeCacheCertainty;
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struct _GstTimeCacheEntry {
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guint64 location;
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gint64 timestamp;
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};
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struct _GstTimeCacheGroup {
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/* unique ID of group in cache */
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gint groupnum;
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/* list of entries */
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GList *entries;
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/* the certainty level of the group */
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GstTimeCacheCertainty certainty;
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/* peer group that contains more certain entries */
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gint peergroup;
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/* range variables */
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gint64 mintimestamp,maxtimestamp;
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guint64 minlocation,maxlocation;
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};
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struct _GstTimeCacheClass {
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GstObjectClass parent_class;
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};
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struct _GstTimeCache {
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GstObject object;
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GList *groups;
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GstTimeCacheGroup *curgroup;
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gint maxgroup;
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};
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GType gst_time_cache_get_type (void);
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GstTimeCache* gst_time_cache_new (void);
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gint gst_time_cache_get_group (GstTimeCache *tc);
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gint gst_time_cache_new_group (GstTimeCache *tc);
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gboolean gst_time_cache_set_group (GstTimeCache *tc, gint groupnum);
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void gst_time_cache_set_certainty (GstTimeCache *tc, GstTimeCacheCertainty certainty);
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GstTimeCacheCertainty gst_time_cache_get_certainty (GstTimeCache *tc);
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void gst_time_cache_add_entry (GstTimeCache *tc, guint64 location, gint64 timestamp);
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gboolean gst_time_cache_find_location (GstTimeCache *tc, guint64 location, gint64 *timestamp);
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gboolean gst_time_cache_find_timestamp (GstTimeCache *tc, gint64 timestamp, guint64 *location);
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G_END_DECLS
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#endif /* __GST_TIME_CACHE_H__ */
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