direwolf/kiss_frame.h
WB2OSZ 8b81a3226f Version 1.2
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54 lines
1.2 KiB
C

/* kiss_frame.h */
#include "audio.h" /* for struct audio_s */
/*
* Special characters used by SLIP protocol.
*/
#define FEND 0xC0
#define FESC 0xDB
#define TFEND 0xDC
#define TFESC 0xDD
enum kiss_state_e {
KS_SEARCHING, /* Looking for FEND to start KISS frame. */
KS_COLLECTING}; /* In process of collecting KISS frame. */
#define MAX_KISS_LEN 2048 /* Spec calls for at least 1024. */
/* Might want to make it longer to accomodate */
/* maximum packet length. */
#define MAX_NOISE_LEN 100
typedef struct kiss_frame_s {
enum kiss_state_e state;
unsigned char kiss_msg[MAX_KISS_LEN];
/* Leading FEND is optional. */
/* Contains escapes and ending FEND. */
int kiss_len;
unsigned char noise[MAX_NOISE_LEN];
int noise_len;
} kiss_frame_t;
void kiss_frame_init (struct audio_s *pa);
int kiss_encapsulate (unsigned char *in, int ilen, unsigned char *out);
void kiss_rec_byte (kiss_frame_t *kf, unsigned char ch, int debug, void (*sendfun)(int,unsigned char*,int));
typedef enum fromto_e { FROM_CLIENT=0, TO_CLIENT=1 } fromto_t;
void kiss_debug_print (fromto_t fromto, char *special, unsigned char *pmsg, int msg_len);
/* end kiss_frame.h */