/*

 * Copyright (C) 2010  Miroslav Lichvar <mlichvar@redhat.com>

 * 

 * This program 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 2 of the License, or

 * (at your option) any later version.

 * 

 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.

 */

#ifndef CLOCK_H

#define CLOCK_H

#include "sysheaders.h"

#include "generator.h"

#define CLOCK_NTP_FLL_MODE2 0x1

#define CLOCK_NTP_PLL_CLAMP 0x2

class Clock {

	double time;

	double mono_time;

	double freq;

	Generator *freq_generator;

	Generator *step_generator;

	long base_tick;

	struct timex ntp_timex;

	int ntp_state;

	int ntp_shift_pll;

	int ntp_flags;

	long ntp_update_interval;

	double ntp_offset;

	double ntp_slew;

	long ss_offset;

	long ss_slew;

public:

	Clock();

	~Clock();

	double get_real_time() const;

	double get_monotonic_time() const;

	double get_total_freq() const;

	double get_raw_freq() const;

	double get_true_interval(double local_interval) const;

	double get_local_interval(double true_interval) const;

	void set_freq_generator(Generator *gen);

	void set_step_generator(Generator *gen);

	void set_freq(double freq);

	void set_time(double time);

	void step_time(double step);

	void set_ntp_shift_pll(int shift);

	void set_ntp_flag(int enable, int flag);

	void advance(double real_interval);

	void update(bool second);

	void update_ntp_offset(long offset);

	int adjtimex(struct timex *buf);

	int adjtime(const struct timeval *delta, struct timeval *olddelta);

};

class Refclock {

	double time;

	double offset;

	bool generate;

	bool valid;

	Generator *offset_generator;

public:

	Refclock();

	~Refclock();

	void set_offset_generator(Generator *gen);

	void update(double time, const Clock *clock);

	void set_generation(bool enable);

	bool get_sample(double *time, double *offset) const;

	void get_offsets(double *offsets, int size);

};

#endif