/*****************************************************************************
 * steim2.h
 *
 * Steim2 encoder
 *
 * (c) 2000 Andres Heinloo, GFZ Potsdam
 *
 * 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, or (at your option) any later
 * version. For more information, see http://www.gnu.org/
 *
 * ================
 * Change log
 * ===============
 *
 * 01.01.2013 Adapted code to CAPS client library requirements (gempa GmbH)
 *****************************************************************************/

#ifndef CAPS_MSEED_STEIM2_H
#define CAPS_MSEED_STEIM2_H

#include "encoder.h"
#include "mseed.h"

namespace Gempa {
namespace CAPS {

//*****************************************************************************
// Steim2Frame
//*****************************************************************************

struct Steim2Frame {
	u_int32_t nibble_word;
	u_int32_t sample_word[15];
};

//*****************************************************************************
// Steim2Encoder
//*****************************************************************************

template<typename T>
class Steim2Encoder : public Encoder {
	public:
		Steim2Encoder(MSEEDFormat *format, int freqn, int freqd)
		    : Encoder(freqn, freqd), format(format), frame_count(0),
		  bp(0), fp(0), spw(4), last_sample(0), nibble_word(0) {
		}
		virtual ~Steim2Encoder();
		virtual void flush();

		virtual void push(void *value);
		virtual int type() const { return DE_STEIM2; }

	private:
		void update_spw(int bp);
		void store(int32_t value);
		void init_packet();
		void finish_packet();
		void update_packet();

		MSEEDEncoderPacket<Steim2Frame> get_packet() {
			return format->get_packet<Steim2Frame>(_clk.get_time(bp),
			                                       _clk.correction(), _timingQuality);
		}

		void queue_packet(MSEEDEncoderPacket<Steim2Frame> &pckt);

		int number_of_frames(const MSEEDEncoderPacket<Steim2Frame> &packet) {
			return (packet.datalen >> 6);
		}

	private:
		MSEEDFormat *format;
		int frame_count;
		int bp;
		int fp;
		int32_t last_s;
		int spw;
		int32_t last_sample;
		int32_t buf[8];
		u_int32_t nibble_word;
		MSEEDEncoderPacket<Steim2Frame> current_packet;
};


}
}


#include "steim2.ipp"

#endif // __STEIM2_H__