misc/adsb-tools
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Multiple parser support.

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This commit is contained in:
Ian Gulliver
2016-02-15 06:47:40 +00:00
parent 487ecd170c
commit bb1e5cf2ff
4 changed files with 93 additions and 26 deletions
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21
airspy_adsb.c
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@@ -1,3 +1,4 @@
#include <assert.h>
#include <stdbool.h>
#include <stdio.h>
#include <string.h>
@@ -5,19 +6,29 @@
#include "common.h"
#include "airspy_adsb.h"
static bool airspy_adsb_parse_common(char *, struct packet *);
struct backend_state {
uint64_t mlat_timestamp_last;
uint64_t mlat_timestamp_generation;
};
static bool airspy_adsb_parse_common(char *, struct packet *, struct backend_state *);
bool airspy_adsb_parse(struct buf *buf, struct packet *packet) {
void airspy_adsb_init() {
assert(sizeof(struct backend_state) <= PARSER_STATE_LEN);
}
bool airspy_adsb_parse(struct buf *buf, struct packet *packet, void *state_in) {
if (buf->length < 35 ||
buf_chr(buf, 0) != '*') {
return false;
}
struct backend_state *state = state_in;
if (buf->length >= 35 &&
buf_chr(buf, 33) == '\r' &&
buf_chr(buf, 34) == '\n' &&
buf_chr(buf, 15) == ';') {
if (!airspy_adsb_parse_common(buf_at(buf, 16), packet)) {
if (!airspy_adsb_parse_common(buf_at(buf, 16), packet, state)) {
return false;
}
packet->type = MODE_S_SHORT;
@@ -29,7 +40,7 @@ bool airspy_adsb_parse(struct buf *buf, struct packet *packet) {
buf_chr(buf, 47) == '\r' &&
buf_chr(buf, 48) == '\n' &&
buf_chr(buf, 29) == ';') {
if (!airspy_adsb_parse_common(buf_at(buf, 30), packet)) {
if (!airspy_adsb_parse_common(buf_at(buf, 30), packet, state)) {
return false;
}
packet->type = MODE_S_LONG;
@@ -40,7 +51,7 @@ bool airspy_adsb_parse(struct buf *buf, struct packet *packet) {
return false;
}
static bool airspy_adsb_parse_common(char *in, struct packet *packet) {
static bool airspy_adsb_parse_common(char *in, struct packet *packet, struct backend_state *state) {
if (in[8] != ';' ||
in[11] != ';' ||
in[16] != ';') {