/* kiss_frame.h */
#include "audio.h" /* for struct audio_s */
/*
* The first byte of a KISS frame has:
* channel in upper nybble.
* command in lower nybble.
*/
#define KISS_CMD_DATA_FRAME 0
#define KISS_CMD_TXDELAY 1
#define KISS_CMD_PERSISTENCE 2
#define KISS_CMD_SLOTTIME 3
#define KISS_CMD_TXTAIL 4
#define KISS_CMD_FULLDUPLEX 5
#define KISS_CMD_SET_HARDWARE 6
#define XKISS_CMD_DATA 12 // Not supported. http://he.fi/pub/oh7lzb/bpq/multi-kiss.pdf
#define XKISS_CMD_POLL 14 // Not supported.
#define KISS_CMD_END_KISS 15
* Special characters used by SLIP protocol.
#define FEND 0xC0
#define FESC 0xDB
#define TFEND 0xDC
#define TFESC 0xDD
enum kiss_state_e {
KS_SEARCHING = 0, /* Looking for FEND to start KISS frame. */
/* Must be 0 so we can simply zero whole structure to initialize. */
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;
#ifndef KISSUTIL
void kiss_frame_init (struct audio_s *pa);
#endif
int kiss_encapsulate (unsigned char *in, int ilen, unsigned char *out);
int kiss_unwrap (unsigned char *in, int ilen, unsigned char *out);
void kiss_rec_byte (kiss_frame_t *kf, unsigned char ch, int debug, int client, void (*sendfun)(int,int,unsigned char*,int,int));
typedef enum fromto_e { FROM_CLIENT=0, TO_CLIENT=1 } fromto_t;
void kiss_process_msg (unsigned char *kiss_msg, int kiss_len, int debug, int client, void (*sendfun)(int,int,unsigned char*,int,int));
void kiss_debug_print (fromto_t fromto, char *special, unsigned char *pmsg, int msg_len);
/* end kiss_frame.h */