45 lines
1.4 KiB
C
45 lines
1.4 KiB
C
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#include "packet.h"
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char *packet_type_names[] = {
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"Mode-S short",
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"Mode-S long",
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};
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static uint64_t packet_mlat_timestamp_scale_mhz_in(uint64_t timestamp, uint32_t mhz) {
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return timestamp * (PACKET_MLAT_MHZ / mhz);
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}
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static uint64_t packet_mlat_timestamp_scale_width_in(uint64_t timestamp, uint64_t max, struct packet_mlat_state *state) {
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if (timestamp < state->timestamp_last) {
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// Counter reset
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state->timestamp_generation += max;
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}
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state->timestamp_last = timestamp;
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return state->timestamp_generation + timestamp;
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}
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static uint64_t packet_mlat_timestamp_scale_mhz_out(uint64_t timestamp, uint64_t mhz) {
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return timestamp / (PACKET_MLAT_MHZ / mhz);
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}
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static uint64_t packet_mlat_timestamp_scale_width_out(uint64_t timestamp, uint64_t max) {
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return timestamp % max;
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}
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uint64_t packet_mlat_timestamp_scale_in(uint64_t timestamp, uint64_t max, uint16_t mhz, struct packet_mlat_state *state) {
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return packet_mlat_timestamp_scale_mhz_in(packet_mlat_timestamp_scale_width_in(timestamp, max, state), mhz);
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}
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uint64_t packet_mlat_timestamp_scale_out(uint64_t timestamp, uint64_t max, uint16_t mhz) {
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return packet_mlat_timestamp_scale_width_out(packet_mlat_timestamp_scale_mhz_out(timestamp, mhz), max);
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}
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uint32_t packet_rssi_scale_in(uint32_t value, uint32_t max) {
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return value * (PACKET_RSSI_MAX / max);
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}
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uint32_t packet_rssi_scale_out(uint32_t value, uint32_t max) {
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return value / (PACKET_RSSI_MAX / max);
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}
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