1 files changed, 100 insertions, 0 deletions
diff --git a/src/fuenf/fuenf.h b/src/fuenf/fuenf.h
new file mode 100644
index 0000000..cb335c7
--- /dev/null
+++ b/src/fuenf/fuenf.h
@@ -0,0 +1,100 @@
+#include "../libmobile/sender.h"
+#include "../libgoertzel/goertzel.h"
+#include "../libfm/fm.h"
+
+enum fuenf_state {
+	FUENF_STATE_IDLE = 0,
+	FUENF_STATE_RUF,
+	FUENF_STATE_DURCHSAGE,
+};
+
+extern const char *fuenf_funktion_name[8];
+
+enum fuenf_funktion {
+	FUENF_FUNKTION_RUF = 0,
+	FUENF_FUNKTION_FEUER,
+	FUENF_FUNKTION_PROBE,
+	FUENF_FUNKTION_WARNUNG,
+	FUENF_FUNKTION_ABC,
+	FUENF_FUNKTION_ENTWARNUNG,
+	FUENF_FUNKTION_KATASTROPHE,
+	FUENF_FUNKTION_TURBO, /* used for turbo scanning, where only pause and 5 tones are sent */
+};
+
+enum rx_state {
+	RX_STATE_RESET = 0,	/* wait for silence (after init, double tone or error) */
+	RX_STATE_IDLE,		/* receive silence, wait for digit */
+	RX_STATE_DIGIT,		/* wait for end of digit (next digit or silence) */
+	RX_STATE_WAIT_SIGNAL,	/* wait for double tone (up to 6 sec) */
+	RX_STATE_SIGNAL,	/* receive double tone and wait for minimum length (2 sec) */
+};
+
+/* definition for tone sequence */
+typedef struct tone_seq {
+	double	phasestep1, phasestep2;
+	double	duration;
+} tone_seq_t;
+
+#define DSP_NUM_DIGITS 11
+#define DSP_NUM_TONES 4
+
+/* instance of pocsag transmitter/receiver */
+typedef struct fuenf {
+	sender_t		sender;
+
+	/* system info */
+	int			tx; 			/* can transmit */
+	int			rx;			/* can receive */
+	enum fuenf_funktion	default_funktion;	/* default function, if not given by caller */
+
+	/* tx states */
+	enum fuenf_state	state;			/* state (idle, preamble, message) */
+	uint32_t		scan_from, scan_to;	/* if not equal: scnning mode */
+
+	/* rx states */
+
+	/* calls */
+	int			callref;
+
+	/* TX dsp states */
+	double			sample_duration;	/* length between samples in seconds */
+	enum fuenf_funktion	tx_funktion;
+	tone_seq_t		tx_seq[64];		/* transmit tone sequence */
+	int			tx_seq_length;		/* size of current tone sequence */
+	int			tx_seq_index;		/* current tone that is played */
+	double			tx_count;		/* counts duration of current tone */
+	double			tx_phase1, tx_phase2;	/* current phase of tone */
+
+	/* display measurements */
+	dispmeasparam_t		*dmp_digit_level;
+	dispmeasparam_t		*dmp_tone_levels[DSP_NUM_TONES];
+
+	/* RX dsp states */
+	enum rx_state		rx_state;		/* current state of decoder */
+	fm_demod_t		rx_digit_demod;		/* demodulator for frequency */
+	iir_filter_t		rx_digit_lp;		/* low pass to filter the frequency result */
+	int			rx_digit_last;		/* track if digit changes */
+	int			rx_digit_count;		/* count samples after digit changes */
+	goertzel_t		rx_tone_goertzel[DSP_NUM_TONES]; /* rx filter */
+	sample_t		*rx_tone_filter_spl;	/* buffer for rx filter */
+	int			rx_tone_filter_size;	/* length of buffer, will affect bandwidth of filter */
+	int			rx_tone_filter_pos;	/* samples in buffer */
+	double			rx_tone_levels[DSP_NUM_TONES]; /* last detected levels */
+	char			rx_callsign[6];		/* 5 digits + '\0' */
+	int			rx_callsign_count;	/* number of (complete) digits received */
+	enum fuenf_funktion	rx_function;		/* received signal */
+	int			rx_function_count;	/* counts duration in samples */
+} fuenf_t;
+
+void bos_list_channels(void);
+double bos_kanal2freq(const char *kanal);
+const char *bos_freq2kanal(const char *freq);
+const char *bos_number_valid(const char *number);
+int fuenf_init(void);
+void fuenf_exit(void);
+int fuenf_create(const char *kanal, double frequency, const char *device, int use_sdr, int samplerate, double rx_gain, double tx_gain, int tx, int rx, double max_deviation, double signal_deviation, enum fuenf_funktion funktion, 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);
+void fuenf_destroy(sender_t *sender);
+void fuenf_tx_done(fuenf_t *fuenf);
+void fuenf_rx_callsign(fuenf_t *fuenf, const char *callsign);
+void fuenf_rx_function(fuenf_t *fuenf, enum fuenf_funktion funktion);
+