90 lines
3.4 KiB
C
90 lines
3.4 KiB
C
#include <libfm/fm.h>
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#include <libmobile/sender.h>
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#include <libtimer/timer.h>
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/* current state of transmitter */
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enum euro_health_state {
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EURO_HEALTH_WORKING = 0,/* */
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EURO_HEALTH_DEGRADED, /* */
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EURO_HEALTH_OUTOFORDER, /* */
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};
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/* current state of incoming call */
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enum euro_call_state {
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EURO_CALL_NULL = 0,
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EURO_CALL_ANSWER, /* answer the call */
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EURO_CALL_DEGRADED, /* play announcement 'teilgestoert' */
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EURO_CALL_ACKNOWLEDGE, /* play announcement 'eurosignal xxx', transmit ID */
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EURO_CALL_RELEASED, /* caller hangs up, ID still not transmitted */
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EURO_CALL_UNASSIGNED, /* play announcement 'kein anschluss' */
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EURO_CALL_OUTOFORDER, /* play announcement 'gestoert' */
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EURO_CALL_BEEPING, /* call towards MNCC that beeps */
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};
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struct eurosignal;
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/* instance of incoming call */
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typedef struct euro_call {
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struct euro_call *next;
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struct eurosignal *euro;
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int callref; /* call reference */
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char station_id[7]; /* current station ID */
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int page_count; /* number of transmissions left */
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struct timer timer;
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enum euro_call_state state; /* current state */
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int announcement_count; /* used to replay annoucements */
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int16_t *announcement_spl; /* current sample */
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int announcement_size; /* current size */
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int announcement_index; /* current sample index */
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} euro_call_t;
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/* instance of eurosignal transmitter/receiver */
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typedef struct eurosignal {
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sender_t sender;
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/* system info */
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int tx; /* can transmit */
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int rx; /* can receive */
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int repeat; /* repetitions of ID transmission */
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int degraded; /* station is degraded */
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int random; /* random ID transmission */
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char random_id[7]; /* current ID */
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char random_count; /* number of transmissions left */
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uint32_t scan_from; /* scan ID from */
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uint32_t scan_to; /* scan ID to (scan if not 0) */
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/* calls */
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euro_call_t *call_list; /* linked list of all calls */
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/* display measurements */
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dispmeasparam_t *dmp_tone_level;
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dispmeasparam_t *dmp_tone_quality;
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/* dsp states */
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double sample_duration; /* how many seconds lasts a sample */
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double tx_phaseshift65536; /* current tone's phase shift per sample */
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double tx_phase; /* current phase of tone */
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double tx_time; /* current elapsed time of tone */
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char tx_digits[7]; /* current ID being transmitted */
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int tx_digit_index; /* current digit beein transmitted */
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fm_demod_t rx_demod; /* demodulator for frequency */
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iir_filter_t rx_lp; /* low pass to filter the frequency result */
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int rx_digit_count; /* count the tone until detected */
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char rx_digit_last; /* last tone, so we detect any change */
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int rx_digit_receiving; /* we receive digis */
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char rx_digits[7]; /* current ID being received */
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int rx_digit_index; /* current digit receiving */
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int rx_timeout_count; /* count the timeout */
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} euro_t;
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void euro_add_id(const char *id);
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double euro_kanal2freq(const char *kanal, int fm);
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void euro_list_channels(void);
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int euro_init(void);
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void euro_exit(void);
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int euro_create(const char *kanal, const char *device, int use_sdr, int samplerate, double rx_gain, double tx_gain, int fm, int tx, int rx, int repeat, int degraded, int random, uint32_t scan_from, uint32_t scan_to, const char *write_rx_wave, const char *write_tx_wave, const char *read_rx_wave, const char *read_tx_wave, int loopback);
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void euro_destroy(sender_t *sender);
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void euro_get_id(euro_t *euro, char *id);
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void euro_receive_id(euro_t *euro, char *id);
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