1 /* GStreamer 2 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu> 3 * 2000 Wim Taymans <wtay@chello.be> 4 * 2005 Wim Taymans <wim@fluendo.com> 5 * 6 * gstsystemclock.h: A clock implementation based on system time 7 * 8 * This library is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU Library General Public 10 * License as published by the Free Software Foundation; either 11 * version 2 of the License, or (at your option) any later version. 12 * 13 * This library is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 * Library General Public License for more details. 17 * 18 * You should have received a copy of the GNU Library General Public 19 * License along with this library; if not, write to the 20 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 21 * Boston, MA 02110-1301, USA. 22 */ 23 24 25 #ifndef __GST_SYSTEM_CLOCK_H__ 26 #define __GST_SYSTEM_CLOCK_H__ 27 28 #include <gst/gstclock.h> 29 30 G_BEGIN_DECLS 31 32 #define GST_TYPE_SYSTEM_CLOCK (gst_system_clock_get_type ()) 33 #define GST_SYSTEM_CLOCK(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_SYSTEM_CLOCK, GstSystemClock)) 34 #define GST_SYSTEM_CLOCK_CAST(obj) ((GstSystemClock *)(obj)) 35 #define GST_IS_SYSTEM_CLOCK(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_SYSTEM_CLOCK)) 36 #define GST_SYSTEM_CLOCK_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_SYSTEM_CLOCK, GstSystemClockClass)) 37 #define GST_IS_SYSTEM_CLOCK_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_SYSTEM_CLOCK)) 38 #define GST_SYSTEM_CLOCK_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_SYSTEM_CLOCK, GstSystemClockClass)) 39 40 41 typedef struct _GstSystemClock GstSystemClock; 42 typedef struct _GstSystemClockClass GstSystemClockClass; 43 typedef struct _GstSystemClockPrivate GstSystemClockPrivate; 44 45 /** 46 * GstClockType: 47 * @GST_CLOCK_TYPE_REALTIME: time since Epoch 48 * @GST_CLOCK_TYPE_MONOTONIC: monotonic time since some unspecified starting 49 * point 50 * @GST_CLOCK_TYPE_OTHER: some other time source is used (Since: 1.0.5) 51 * 52 * The different kind of clocks. 53 */ 54 typedef enum { 55 GST_CLOCK_TYPE_REALTIME = 0, 56 GST_CLOCK_TYPE_MONOTONIC = 1, 57 GST_CLOCK_TYPE_OTHER = 2 58 } GstClockType; 59 60 /** 61 * GstSystemClock: 62 * 63 * The default implementation of a #GstClock that uses the system time. 64 */ 65 struct _GstSystemClock { 66 GstClock clock; 67 68 /*< private >*/ 69 GstSystemClockPrivate *priv; 70 71 gpointer _gst_reserved[GST_PADDING]; 72 }; 73 74 struct _GstSystemClockClass { 75 GstClockClass parent_class; 76 77 /*< private >*/ 78 gpointer _gst_reserved[GST_PADDING]; 79 }; 80 81 GST_API 82 GType gst_system_clock_get_type (void); 83 84 GST_API 85 GstClock* gst_system_clock_obtain (void); 86 87 GST_API 88 void gst_system_clock_set_default (GstClock *new_clock); 89 90 #ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC 91 G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstSystemClock, gst_object_unref) 92 #endif 93 94 G_END_DECLS 95 96 #endif /* __GST_SYSTEM_CLOCK_H__ */ 97