1 files changed, 108 insertions, 0 deletions
diff --git a/src/pocsag/pocsag.h b/src/pocsag/pocsag.h
new file mode 100644
index 0000000..1ebcd76
--- /dev/null
+++ b/src/pocsag/pocsag.h
@@ -0,0 +1,108 @@
+#include "../libmobile/sender.h"
+
+enum pocsag_function {
+	POCSAG_FUNCTION_NUMERIC = 0,
+	POCSAG_FUNCTION_BEEP1,
+	POCSAG_FUNCTION_BEEP2,
+	POCSAG_FUNCTION_ALPHA,
+};
+
+extern const char *pocsag_function_name[4];
+
+enum pocsag_state {
+	POCSAG_IDLE = 0,
+	POCSAG_PREAMBLE,
+	POCSAG_MESSAGE,
+};
+
+enum pocsag_language {
+	LANGUAGE_DEFAULT = 0,
+	LANGUAGE_GERMAN,
+};
+
+struct pocsag;
+
+/* instance of outgoing message */
+typedef struct pocsag_msg {
+	struct pocsag_msg	*next;
+	struct pocsag		*pocsag;
+	int			callref;		/* call reference */
+	uint32_t		ric;			/* current pager ID */
+	enum pocsag_function	function;		/* current function */
+	char			data[256];		/* message to be transmitted */
+	int			data_length;		/* length of message that is not 0-terminated */
+	int			data_index;		/* current character transmitting */
+	int			bit_index;		/* current bit transmitting */
+	char			padding;		/* EOT or other padding */
+} pocsag_msg_t;
+
+/* instance of pocsag transmitter/receiver */
+typedef struct pocsag {
+	sender_t		sender;
+
+	/* system info */
+	int			tx; 			/* can transmit */
+	int			rx;			/* can receive */
+	enum pocsag_language	language;		/* special characters */
+	enum pocsag_function	default_function;	/* default function, if not given by caller */
+	const char 		*default_message;	/* default message, if caller has no caller ID */
+	char			padding;		/* EOT or other padding */
+
+	/* tx states */
+	enum pocsag_state	state;			/* state (idle, preamble, message) */
+	pocsag_msg_t		*current_msg;		/* msg, if message codewords are transmitted */
+	int			word_count;		/* counter for codewords */
+	int			idle_count;		/* counts when to go idle */
+	uint32_t		scan_from, scan_to;	/* if not equal: scnning mode */
+
+	/* rx states */
+	int			rx_msg_valid;		/* currently in receiving message state */
+	uint32_t		rx_msg_ric;		/* ric of message */
+	enum pocsag_function	rx_msg_function;	/* function of message */
+	char			rx_msg_data[256];	/* data buffer */
+	int			rx_msg_data_length;	/* complete characters received */
+	int			rx_msg_bit_index;	/* current bit received for alphanumeric */
+
+	/* calls */
+	pocsag_msg_t		*msg_list;		/* linked list of all calls */
+
+	/* dsp states */
+	double			fsk_deviation;		/* deviation of FSK signal on sound card */
+	double			fsk_polarity;		/* polarity of FSK signal (-1.0 = bit '1' is down) */
+	sample_t		fsk_ramp_up[256];	/* samples of upward ramp shape */
+	sample_t		fsk_ramp_down[256];	/* samples of downward ramp shape */
+	double			fsk_bitduration;	/* duration of a bit in samples */
+	double			fsk_bitstep;		/* fraction of a bit each sample */
+	sample_t		*fsk_tx_buffer;		/* tx buffer for one data block */
+	int			fsk_tx_buffer_size;	/* size of tx buffer (in samples) */
+	int			fsk_tx_buffer_length;	/* usage of buffer (in samples) */
+	int			fsk_tx_buffer_pos;	/* current position sending buffer */
+	double			fsk_tx_phase;		/* current bit position */
+	uint8_t			fsk_tx_lastbit;		/* last bit of last message, to correctly ramp */
+	double			fsk_rx_phase;		/* current sample position */
+	uint8_t			fsk_rx_lastbit;		/* last bit of last message, to detect level */
+	uint32_t		fsk_rx_word;		/* shift register to receive codeword */
+	int			fsk_rx_sync;		/* counts down to next sync */
+	int			fsk_rx_index;		/* counts bits of received codeword */
+} pocsag_t;
+
+int msg_receive(const char *text);
+
+int pocsag_function_name2value(const char *text);
+void pocsag_list_channels(void);
+double pocsag_channel2freq(const char *kanal, double *deviation, double *polarity, int *baudrate);
+const char *pocsag_number_valid(const char *number);
+void pocsag_add_id(const char *id);
+int pocsag_init(void);
+void pocsag_exit(void);
+int pocsag_init(void);
+void pocsag_exit(void);
+void pocsag_new_state(pocsag_t *pocsag, enum pocsag_state new_state);
+void pocsag_msg_receive(enum pocsag_language language, const char *channel, uint32_t ric, enum pocsag_function function, const char *message);
+int pocsag_create(const char *kanal, double frequency, const char *device, int use_sdr, int samplerate, double rx_gain, double tx_gain, int tx, int rx, enum pocsag_language language, int baudrate, double deviation, double polarity, enum pocsag_function function, const char *message, char padding, 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 pocsag_destroy(sender_t *sender);
+void pocsag_msg_send(enum pocsag_language language, const char *text, size_t text_length);
+void pocsag_msg_destroy(pocsag_msg_t *msg);
+void pocsag_get_id(pocsag_t *euro, char *id);
+void pocsag_receive_id(pocsag_t *euro, char *id);
+void pocsag_msg_done(pocsag_t *pocsag);