fax.hpp

收发传真的C源码

#if !defined(__FAX_HPP__)
#define __FAX_HPP__
#include "comm.hpp"
#include "faxhead.hpp"
/* ******************************************************************** *
 *
 *  Fax specific variables, structs, etc.
 *
 * ******************************************************************** */
struct HDLC_msg                             // format of HDLC message
    {
    BYTE   addr;                           // address byte (always 0xff)
    BYTE   ctl_fld;                        // control field
    BYTE   fax_ctl_fld;                    // FAX control field (FCF)
    BYTE   data[253];                      // optional data
    short    len;                            // received frame length
    };

/* ******************************************************************** *
 *
 *  Fax class definition
 *
 * ******************************************************************** */

class Fax : public Protocol
    {
    public:
	   FaxHeader header;
	   Fax     (Comm *,                    // Fax instance contstructor
			  char *,                    //   Comm instance, station ID
			  short(*)(short,               //   status routine
					FuncStat *),
			  void **,DWORD a_speed=19200);                   //   FuncStat parameter

			  ~Fax(void);                // destructor

	   short    Send(char *, char *,BOOL SkipDIS=FALSE);
	   short	Receive(char *,short status=1);           // receive a fax
	   char     nameBuffer[30];
    private:
	   char     chk_char;
	   Comm    *cp;                        // Comm instance
	   short    Send_CSI(void),             // send optional CSI
			 HDLC_Mode(short),             // set HDLC tx|rx mode
			 Data_Mode(short, short),        // set data tx|rx mode
			 Get_Speeds(void),           // get tx and rx speeds
			 Get_Line(char *, short),      // get a CR-terminate line
			 Get_Char(char *, short),      // get a character
			 Rcv_Hmsg(void),             // receive an HDLC frame
			 Send_Our_ID(BYTE),         // send our ID to remote
			 Send_Hmsg(BYTE,BYTE,short), // send an HDLC frame
			 Send_TSI(void),             // send TSI frame to remote
			 Send_DIS(void),             // send DIS frame to remote
			 Send_DCS(void),             // send DCS frame to remote
			 Init_Modem(short),           // initialize modem
			 (*stat)(short,                // status routine poshorter
				    FuncStat *),
			 connected;                  // HDLC link active
	   WORD   pbi;                        // page buffer index
	   long   oldspeed;                   // old commuincations speed
	   void   Reverse_Bytes(BYTE *, short);

	   void   Display_ID(char *, BYTE *,BOOL);
	   void   Display_Msg(short);
	   void   Display_Msg(char *);

	   void	  Reset_Modem(void);          // reset modem and comm parms
	   WORD   max_sendspeeds,max_recespeeds;
	   WORD   speeds;                     // speeds supported
								    // 1... .... 9600 transmit
								    // .1.. .... 7200
								    // ..1. .... 4800
								    // ...1 .... 2400
								    // .... 1... 9600 receive
								    // .... .1.. 7200
								    // .... ..1. 4800
								    // .... ...1 2400
	   BYTE
			*pagebuf,                    // page buffer area
			 Reverse_Byte(BYTE value);  // reverse bits in a byte
	   char   *station;                    // our station id
	   FuncStat fs;                  // fax status structure
	   union   {                           // accesss HDLC msg as chars
			 struct  HDLC_msg hmsg;      // HDLC message area
			 BYTE   cmsg[256];          // .. same as char array
			 };
	   DWORD   n_speed;
	   char    dis_msg[6];
	   char    dcs_msg[6];
    };

#endif