/*------------------------------------------------------------------
*
* Module: dlq.h
*---------------------------------------------------------------*/
#ifndef DLQ_H
#define DLQ_H 1
#include "ax25_pad.h"
#include "audio.h"
/* Types of things that can be in queue. */
typedef enum dlq_type_e {DLQ_REC_FRAME, DLQ_CONNECT_REQUEST, DLQ_DISCONNECT_REQUEST, DLQ_XMIT_DATA_REQUEST} dlq_type_t;
/* A queue item. */
// TODO: call this event rather than item.
// TODO: should add fences.
typedef struct dlq_item_s {
struct dlq_item_s *nextp; /* Next item in queue. */
dlq_type_t type; /* Type of item. */
/* DLQ_REC_FRAME, DLQ_CONNECT_REQUEST, DLQ_DISCONNECT_REQUEST, DLQ_XMIT_DATA_REQUEST */
int chan; /* Radio channel of origin. */
// Used for received frame.
int subchan; /* Winning "subchannel" when using multiple */
/* decoders on one channel. */
/* Special case, -1 means DTMF decoder. */
/* Maybe we should have a different type in this case? */
int slice; /* Winning slicer. */
packet_t pp; /* Pointer to frame structure. */
alevel_t alevel; /* Audio level. */
retry_t retries; /* Effort expended to get a valid CRC. */
char spectrum[MAX_SUBCHANS*MAX_SLICERS+1]; /* "Spectrum" display for multi-decoders. */
// Used by requests from a client application.
char addrs[AX25_MAX_ADDRS][AX25_MAX_ADDR_LEN];
int num_addr; /* Range 2 .. 10. */
int client;
int pid;
/* TODO: xmit data */
} dlq_item_t;
void dlq_init (void);
void dlq_rec_frame (int chan, int subchan, int slice, packet_t pp, alevel_t alevel, retry_t retries, char *spectrum);
void dlq_connect_request (char addrs[AX25_MAX_ADDRS][AX25_MAX_ADDR_LEN], int num_addr, int chan, int client, int pid);
void dlq_disconnect_request (char addrs[AX25_MAX_ADDRS][AX25_MAX_ADDR_LEN], int num_addr, int chan, int client);
void dlq_xmit_data_request (char addrs[AX25_MAX_ADDRS][AX25_MAX_ADDR_LEN], int num_addr, int chan, int clienti, int pid, char *xdata_ptr, int xdata_len);
int dlq_wait_while_empty (double timeout_val);
struct dlq_item_s *dlq_remove (void);
void dlq_delete (struct dlq_item_s *pitem);
#endif
/* end dlq.h */
