/* GStreamer

 * Copyright (C) 1999,2000 Erik Walthinsen <omega@cse.ogi.edu>

 *                    2000 Wim Taymans <wtay@chello.be>

 *                    2005 Wim Taymans <wim@fluendo.com>

 *

 * gstsystemclock.h: A clock implementation based on system time

 *

 * 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., 51 Franklin St, Fifth Floor,

 * Boston, MA 02110-1301, USA.

 */

#ifndef __GST_SYSTEM_CLOCK_H__

#define __GST_SYSTEM_CLOCK_H__

#include <gst/gstclock.h>

G_BEGIN_DECLS

#define GST_TYPE_SYSTEM_CLOCK                   (gst_system_clock_get_type ())

#define GST_SYSTEM_CLOCK(obj)                   (G_TYPE_CHECK_INSTANCE_CAST ((obj), GST_TYPE_SYSTEM_CLOCK, GstSystemClock))

#define GST_SYSTEM_CLOCK_CAST(obj)              ((GstSystemClock *)(obj))

#define GST_IS_SYSTEM_CLOCK(obj)                (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GST_TYPE_SYSTEM_CLOCK))

#define GST_SYSTEM_CLOCK_CLASS(klass)           (G_TYPE_CHECK_CLASS_CAST ((klass), GST_TYPE_SYSTEM_CLOCK, GstSystemClockClass))

#define GST_IS_SYSTEM_CLOCK_CLASS(klass)        (G_TYPE_CHECK_CLASS_TYPE ((klass), GST_TYPE_SYSTEM_CLOCK))

#define GST_SYSTEM_CLOCK_GET_CLASS(obj)         (G_TYPE_INSTANCE_GET_CLASS ((obj), GST_TYPE_SYSTEM_CLOCK, GstSystemClockClass))

typedef struct _GstSystemClock GstSystemClock;

typedef struct _GstSystemClockClass GstSystemClockClass;

typedef struct _GstSystemClockPrivate GstSystemClockPrivate;

/**

 * GstClockType:

 * @GST_CLOCK_TYPE_REALTIME: time since Epoch

 * @GST_CLOCK_TYPE_MONOTONIC: monotonic time since some unspecified starting

 *                            point

 * @GST_CLOCK_TYPE_OTHER: some other time source is used (Since: 1.0.5)

 *

 * The different kind of clocks.

 */

typedef enum {

  GST_CLOCK_TYPE_REALTIME       = 0,

  GST_CLOCK_TYPE_MONOTONIC      = 1,

  GST_CLOCK_TYPE_OTHER          = 2

} GstClockType;

/**

 * GstSystemClock:

 *

 * The default implementation of a #GstClock that uses the system time.

 */

struct _GstSystemClock {

  GstClock       clock;

  /*< private >*/

  GstSystemClockPrivate *priv;

  gpointer _gst_reserved[GST_PADDING];

};

struct _GstSystemClockClass {

  GstClockClass  parent_class;

  /*< private >*/

  gpointer _gst_reserved[GST_PADDING];

};

GST_API

GType                   gst_system_clock_get_type       (void);

GST_API

GstClock*               gst_system_clock_obtain         (void);

GST_API

void                    gst_system_clock_set_default    (GstClock *new_clock);

#ifdef G_DEFINE_AUTOPTR_CLEANUP_FUNC

G_DEFINE_AUTOPTR_CLEANUP_FUNC(GstSystemClock, gst_object_unref)

#endif

G_END_DECLS

#endif /* __GST_SYSTEM_CLOCK_H__ */