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#ifndef COMMON_TSTAMPER_HPP
#define COMMON_TSTAMPER_HPP

#include <unordered_map>
#include <stdint.h>
#include <avbts_message.hpp>

#define HWTIMESTAMPER_EXTENDED_MESSAGE_SIZE 4096	/*!< Maximum size of HWTimestamper extended message */

/**
 * @brief Provides a generic interface for hardware timestamping
 */
class CommonTimestamper {
protected:
	uint8_t version; //!< HWTimestamper version

public:
	/**
	 * @brief Initializes the hardware timestamp unit
	 * @param iface_label [in] Interface label
	 * @param iface [in] Network interface
	 * @return true
	 */
	virtual bool HWTimestamper_init
		( InterfaceLabel *iface_label, OSNetworkInterface *iface )
		{ return true; }

	/**
	 * @brief Reset the hardware timestamp unit
	 * @return void
	 */
	virtual void HWTimestamper_reset(void) {
	}

	/**
	 * @brief  This method is called before the object is de-allocated.
	 * @return void
	 */
	virtual void HWTimestamper_final(void) {
	}

	/**
	 * @brief  Adjusts the hardware clock frequency
	 * @param  frequency_offset Frequency offset
	 * @return false
	 */
	virtual bool HWTimestamper_adjclockrate
	( float frequency_offset ) const
	{ return false; }

	/**
	 * @brief  Adjusts the hardware clock phase
	 * @param  phase_adjust Phase offset
	 * @return false
	 */
	virtual bool HWTimestamper_adjclockphase( int64_t phase_adjust )
	{ return false; }

	/**
	 * @brief  Get the cross timestamping information.
	 * The gPTP subsystem uses these samples to calculate
	 * ratios which can be used to translate or extrapolate
	 * one clock into another clock reference. The gPTP service
	 * uses these supplied cross timestamps to perform internal
	 * rate estimation and conversion functions.
	 * @param  system_time [out] System time
	 * @param  device_time [out] Device time
	 * @param  local_clock [out] Local clock
	 * @param  nominal_clock_rate [out] Nominal clock rate
	 * @return True in case of success. FALSE in case of error
	 */
	virtual bool HWTimestamper_gettime(Timestamp * system_time,
			Timestamp * device_time,
			uint32_t * local_clock,
			uint32_t * nominal_clock_rate) const = 0;

	/**
	 * @brief  Gets a string with the error from the hardware timestamp block
	 * @param  msg [out] String error
	 * @return void
	 * @todo There is no current implementation for this method.
	 */
	virtual void HWTimestamper_get_extderror(char *msg) const
	{
		*msg = '\0';
	}

	/**
	 * @brief  Starts the PPS (pulse per second) interface
	 * @return false
	 */
	virtual bool HWTimestamper_PPS_start() { return false; };

	/**
	 * @brief  Stops the PPS (pulse per second) interface
	 * @return true
	 */
	virtual bool HWTimestamper_PPS_stop() { return true; };

	/**
	 * @brief  Gets the HWTimestamper version
	 * @return version (signed integer)
	 */
	int getVersion() const
	{
		return version;
	}

	 /**
	 * @brief Default constructor. Sets version to zero.
	 */
	CommonTimestamper() { version = 0; }

	 /**
	 * @brief Deletes HWtimestamper object
	 */
	virtual ~CommonTimestamper() { }
};

#endif/*COMMON_TSTAMPER_HPP*/