49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
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#include "../libfsk/fsk.h"
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#include "../libdtmf/dtmf_encode.h"
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enum cid_state {
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CID_STATE_NULL = 0,
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CID_STATE_WAIT_DTAS,
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CID_STATE_SEND_DTAS,
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CID_STATE_WAIT_TE_ACK,
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CID_STATE_WAIT_FSK,
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CID_STATE_SEND_FSK,
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CID_STATE_WAIT_DTMF,
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CID_STATE_SEND_DTMF,
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CID_STATE_WAIT_END,
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};
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typedef struct callerid {
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/* settings */
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int samplerate; /* sample rate to render output */
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char cw; /* use off-hook caller ID */
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char use_dtmf; /* if set, use DTMF instead of FSK, start digit given */
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/* play states */
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enum cid_state state; /* current action to perform */
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int wait; /* time to send silence until next tone is sent */
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/* frame */
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uint8_t data[1024]; /* buffer to hold frame data to be sent */
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int len; /* bytes in buffer */
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int pos; /* byte in buffer to play next */
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int bpos; /* bit to play next, in case of FSK */
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int seize, mark; /* bit counters for seizure and mark signal */
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/* tone generation */
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double dtas_sine[65536]; /* sine wave for both DT_AS frequencies at correct level */
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double dtas_phaseshift65536[2]; /* frequency of DT_AS */
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double dtas_phase65536[2]; /* current phase of DT_AS */
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int dt_as_count; /* count samples of DT_AS */
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fsk_mod_t fsk; /* modulator for FSK */
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dtmf_enc_t dtmf; /* modulator for DTMF */
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} callerid_t;
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int callerid_init(callerid_t *cid, int samplerate, int bell, char dtmf);
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void callerid_exit(callerid_t *cid);
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int callerid_set(callerid_t *cid, int cw, int dt_as, const char *callerid, uint8_t caller_type, int use_date);
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void callerid_te_ack(callerid_t *cid, char digit);
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int callerid_send(callerid_t *cid, sample_t *samples, int length);
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