/**
 *  Communication channel management
 *
 *  @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.
 */

#define WIN32_LEAN_AND_MEAN
#include <winsock2.h>
#include <windows.h>
#include <crtdbg.h>
#include "usb.h"

#ifndef __BS_COMM_CHANNEL_H__
#define __BS_COMM_CHANNEL_H__


#define BS_DEFAULT_TIMEOUT 4000
#define BS_INPUT_TIMEOUT 10000


// channel type
typedef enum {
	BS_NOT_USED = -1,
	BS_COMM_SOCKET = 0,
	BS_COMM_SOCKET_UDP = 1,
	BS_COMM_SERIAL = 2,
	BS_COMM_USB = 3,
	BS_COMM_SERIAL_485 = 4,
	BS_COMM_USB_MEMORY = 5,
} BS_COMM_CHANNEL;

typedef struct {
	SOCKET handle;
	WSAEVENT event;
	struct sockaddr_in biostationAddr;
} BSSocketChannel;

typedef struct {
	SOCKET handle;
	WSAEVENT event;
	struct sockaddr_in biostationAddr;
} BSSocketUDPChannel;


typedef struct {
	HANDLE handle;
	int baudrate;
} BSSerialChannel;


typedef struct {
	usb_dev_handle* handle;
} BSUSBChannel;


typedef struct {
	int driveIndex;
} BSUSBMemoryChannel;


typedef struct {
	BS_COMM_CHANNEL channelType;
	unsigned biostationID;
	int timeout;
	int inputTimeout;
	union {
		BSSocketChannel socketChannel;
		BSSocketUDPChannel socketUDPChannel;
		BSSerialChannel serialChannel;
		BSUSBChannel USBChannel;
		BSUSBMemoryChannel USBMemoryChannel;
	} channel;
} BSCommChannel;

#ifdef __cplusplus
extern "C" 
{
#endif

int BS_GetAvailableHandle( BS_COMM_CHANNEL channelType );
void BS_ReleaseHandle( int handle );
BOOL BS_IsValidHandle( int handle, BS_COMM_CHANNEL channelType );
BSCommChannel* BS_GetCommChannel( int handle );

__declspec( dllexport ) int BS_ReadChannel( int handle, unsigned char* buf, int size, int timeout );
__declspec( dllexport ) int BS_WriteChannel( int handle, unsigned char* buf, int size, int timeout );

__declspec( dllexport ) int BS_CalculateChannelTimeout( int handle, int dataSize );

__declspec( dllexport ) int BS_ClearChannelReadBuffer( int handle );
__declspec( dllexport ) int BS_ClearChannelWriteBuffer( int handle );



#ifdef __cplusplus
}
#endif

#endif