/**
 *  Packet management routines
 *
 *  @author sjlee@suprema.co.kr
 *  @see    
 */


/*  
 *  Copyright (c) 2006 Suprema Co., Ltd. All Rights Reserved.
 * 
 *  This software is the confidential and proprietary information of 
 *  Suprema Co., Ltd. ("Confidential Information").  You shall not
 *  disclose such Confidential Information and shall use it only in
 *  accordance with the terms of the license agreement you entered into
 *  with Suprema.
 */

#ifndef __BS_PACKET_H__
#define __BS_PACKET_H__

#define WIN32_LEAN_AND_MEAN
#include <windows.h>

//
// Constants
//
#define BS_PACKET_START_CODE	"{{<<"
#define BS_PACKET_END_CODE		">>}}"
#define BS_PACKET_HEADER_LEN	32
#define BS_PACKET_TRAILER_LEN	8
#define BS_SINGLE_PACKET_LEN	40
#define BS_MAX_SEND_LEN		(4*1024)
#define BS_MAX_RECV_LEN		(4*1024)
#define BS_BROADCAST_ID			0
#define BS_MAX_DATA_LEN			(512*1024)

//
// Byte position of packet components
//
#define BS_PACKET_START_CODE_POS	0
#define BS_PACKET_START_CODE_LEN	4
#define BS_PACKET_BIOSTATION_ID_POS	4
#define BS_PACKET_BIOSTATION_ID_LEN	4
#define BS_PACKET_RESERVED1_POS		8
#define BS_PACKET_RESERVED1_LEN		4
#define BS_PACKET_INDEX_POS			12
#define BS_PACKET_INDEX_LEN			2
#define BS_PACKET_TOTAL_NO_POS      14
#define BS_PACKET_TOTAL_NO_LEN		2
#define BS_PACKET_PAYLOAD_SIZE_POS	16
#define BS_PACKET_PAYLOAD_SIZE_LEN	4
#define BS_PACKET_COMMAND_POS		20
#define BS_PACKET_COMMAND_LEN		2
#define BS_PACKET_FLAG_POS			22
#define BS_PACKET_FLAG_LEN			2
#define BS_PACKET_RETURN_CODE_POS	22
#define BS_PACKET_RETURN_CODE_LEN	2
#define BS_PACKET_PARAM1_POS		24
#define BS_PACKET_PARAM1_LEN		4
#define BS_PACKET_PARAM2_POS		28
#define BS_PACKET_PARAM2_LEN		4

#define BS_TRAILER_CHECKSUM_POS		0
#define BS_TRAILER_CHECKSUM_LEN		4
#define BS_TRAILER_END_CODE_POS		4
#define BS_TRAILER_END_CODE_LEN		4

#ifdef __cplusplus
extern "C" 
{
#endif

void BS_MakeSinglePacket( unsigned short command, unsigned id, unsigned short flag, unsigned param1, unsigned param2, unsigned char* packet );
void BS_MakeSinglePacketWithPayload( unsigned short command, unsigned id, unsigned short flag, unsigned param1, unsigned param2, unsigned char* payload, unsigned payloadSize, unsigned char* header, unsigned char* trailer );
void BS_MakePacket( unsigned short command, unsigned id, unsigned short packetIndex, unsigned short totalPacket, unsigned short flag, unsigned param1, unsigned param2, unsigned char* payload, unsigned payloadSize, unsigned char* header, unsigned char* trailer );

unsigned BS_CalculateChecksum( unsigned char* packet, int size );

unsigned short BS_GetUShortValue( unsigned char* packet, int pos );
unsigned BS_GetUIntValue( unsigned char* packet, int pos );

#ifdef __cplusplus
}
#endif

#endif