/* GSequencer - Advanced GTK Sequencer
 * Copyright (C) 2005-2023 Joël Krähemann
 *
 * This file is part of GSequencer.
 *
 * GSequencer is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * GSequencer 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GSequencer.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __AGS_TIMESTAMP_H__
#define __AGS_TIMESTAMP_H__

#include <glib.h>
#include <glib-object.h>

G_BEGIN_DECLS

#define AGS_TYPE_TIMESTAMP                (ags_timestamp_get_type())
#define AGS_TYPE_TIMESTAMP_FLAGS          (ags_timestamp_flags_get_type())
#define AGS_TIMESTAMP(obj)                (G_TYPE_CHECK_INSTANCE_CAST((obj), AGS_TYPE_TIMESTAMP, AgsTimestamp))
#define AGS_TIMESTAMP_CLASS(class)        (G_TYPE_CHECK_CLASS_CAST((class), AGS_TYPE_TIMESTAMP, AgsTimestampClass))
#define AGS_IS_TIMESTAMP(obj)             (G_TYPE_CHECK_INSTANCE_TYPE ((obj), AGS_TYPE_TIMESTAMP))
#define AGS_IS_TIMESTAMP_CLASS(class)     (G_TYPE_CHECK_CLASS_TYPE ((class), AGS_TYPE_TIMESTAMP))
#define AGS_TIMESTAMP_GET_CLASS(obj)      (G_TYPE_INSTANCE_GET_CLASS ((obj), AGS_TYPE_TIMESTAMP, AgsTimestampClass))

#define AGS_TIMESTAMP_GET_OBJ_MUTEX(obj) (&(((AgsTimestamp *) obj)->obj_mutex))

typedef struct _AgsTimestamp AgsTimestamp;
typedef struct _AgsTimestampClass AgsTimestampClass;

/**
 * AgsTimestampFlags:
 * @AGS_TIMESTAMP_UNIX: unix timestamp is used
 * @AGS_TIMESTAMP_OFFSET: internal offset is used
 * @AGS_TIMESTAMP_OUTDATED: the timestamp is outdated
 * 
 * Enum values to control the behavior or indicate internal state of #AgsTimestamp by
 * enable/disable as sync_flags.
 */
typedef enum{
  AGS_TIMESTAMP_UNIX      = 1,
  AGS_TIMESTAMP_OFFSET    = 1 <<  1,
  AGS_TIMESTAMP_OUTDATED  = 1 <<  2,
}AgsTimestampFlags;

struct _AgsTimestamp
{
  GObject gobject;

  AgsTimestampFlags flags;

  GRecMutex obj_mutex;

  union{
    struct _unix{
      time_t time_val;
    }unix_time;
    struct _ags{
      guint64 offset;
    }ags_offset;
  }timer;

  gdouble delay;
  guint attack;
};

struct _AgsTimestampClass
{
  GObjectClass gobject;
};

GType ags_timestamp_get_type(void);
GType ags_timestamp_flags_get_type(void);

/* flags */
gboolean ags_timestamp_test_flags(AgsTimestamp *timestamp,
				  AgsTimestampFlags flags);
void ags_timestamp_set_flags(AgsTimestamp *timestamp,
			     AgsTimestampFlags flags);
void ags_timestamp_unset_flags(AgsTimestamp *timestamp,
			       AgsTimestampFlags flags);

/* query */
time_t ags_timestamp_get_unix_time(AgsTimestamp *timestamp);
void ags_timestamp_set_unix_time(AgsTimestamp *timestamp,
				 time_t unix_time);

guint64 ags_timestamp_get_ags_offset(AgsTimestamp *timestamp);
void ags_timestamp_set_ags_offset(AgsTimestamp *timestamp,
				  guint64 ags_offset);

/* */
AgsTimestamp* ags_timestamp_new();

G_END_DECLS

#endif /*__AGS_TIMESTAMP_H__*/
