97 lines
1.9 KiB
C
97 lines
1.9 KiB
C
#pragma once
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#include <stdint.h>
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#include <sys/epoll.h>
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//////// peer
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// All specific peer structs must be castable to this.
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struct peer;
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typedef void (*peer_event_handler)(struct peer *);
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struct peer {
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int fd;
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peer_event_handler event_handler;
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};
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void peer_init();
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void peer_epoll_add(struct peer *, uint32_t);
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void peer_epoll_del(struct peer *);
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void peer_loop();
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//////// buf
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#define BUF_LEN_MAX 256
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struct buf {
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char buf[BUF_LEN_MAX];
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size_t start;
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size_t length;
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};
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#define BUF_INIT { \
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.start = 0, \
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.length = 0, \
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}
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#define buf_chr(buff, at) ((buff)->buf[(buff)->start + (at)])
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#define buf_at(buff, at) (&buf_chr(buff, at))
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void buf_init(struct buf *);
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ssize_t buf_fill(struct buf *, int);
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void buf_consume(struct buf *, size_t);
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//////// packet
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#define DATA_LEN_MAX 14
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struct packet {
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enum {
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MODE_S_SHORT,
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MODE_S_LONG,
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} type;
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#define NUM_TYPES 2
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uint8_t payload[DATA_LEN_MAX];
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uint64_t mlat_timestamp;
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uint32_t rssi;
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};
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extern char *packet_type_names[];
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//////// mlat
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#define MLAT_MHZ 120
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// Use the signed max to avoid problems with some consumers; it's large enough to not matter.
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#define MLAT_MAX INT64_MAX
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#define RSSI_MAX UINT32_MAX
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struct mlat_state {
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uint64_t timestamp_last;
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uint64_t timestamp_generation;
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};
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uint64_t mlat_timestamp_scale_in(uint64_t, uint64_t, uint16_t, struct mlat_state *);
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uint64_t mlat_timestamp_scale_out(uint64_t, uint64_t, uint16_t);
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//////// rssi
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uint32_t rssi_scale_in(uint32_t, uint32_t);
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uint32_t rssi_scale_out(uint32_t, uint32_t);
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//////// hex
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void hex_init();
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void hex_to_bin(uint8_t *, const char *, size_t);
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uint64_t hex_to_int(const char *, size_t);
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void hex_from_bin_upper(char *, const uint8_t *, size_t);
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void hex_from_bin_lower(char *, const uint8_t *, size_t);
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void hex_from_int_upper(char *, uint64_t, size_t);
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void hex_from_int_lower(char *, uint64_t, size_t);
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///////// retry timing
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void retry_init();
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void retry_cleanup();
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uint32_t retry_get_delay_ms(uint32_t);
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