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83 lines
2.5 KiB
83 lines
2.5 KiB
#ifndef _DTMF_H_
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#define _DTMF_H_
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#include <inttypes.h>
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#include <glib.h>
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#include <errno.h>
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#include <stdbool.h>
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#include "str.h"
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#include "socket.h"
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struct call_media;
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struct call_monologue;
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enum dtmf_trigger_type {
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DTMF_TRIGGER_BLOCK = 0,
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DTMF_TRIGGER_UNBLOCK,
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DTMF_TRIGGER_START_REC,
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DTMF_TRIGGER_STOP_REC,
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DTMF_TRIGGER_START_STOP_REC,
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DTMF_TRIGGER_PAUSE_REC,
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DTMF_TRIGGER_PAUSE_RESUME_REC,
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DTMF_TRIGGER_START_PAUSE_RESUME_REC,
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__NUM_DTMF_TRIGGERS,
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};
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extern const char *dtmf_trigger_types[__NUM_DTMF_TRIGGERS];
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struct dtmf_trigger_state {
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enum dtmf_trigger_type type; // points to matching action
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str trigger; // string to look for
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unsigned int matched; // how many digits matched so far
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bool inactive; // ignore even if set
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};
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struct dtmf_trigger_action {
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void (*matched)(struct call_media *, struct call_monologue *); // run when the trigger is found
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bool repeatable; // reset after a match or not
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void (*digit)(struct call_media *, struct call_monologue *); // run when any digit is found
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};
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#include "call.h"
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struct media_packet;
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struct call_media;
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struct call_monologue;
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struct dtmf_event {
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int code; // char for start, zero for end
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int volume;
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uint64_t ts;
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int rand_code; // state for random replace mode
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unsigned int index; // running counter of events
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enum block_dtmf_mode block_dtmf; // block mode at the time of the event
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};
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bool dtmf_init(void);
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int dtmf_event_packet(struct media_packet *, str *, int, uint64_t ts); // 0 = ok, 1 = end event, -1 = error
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int dtmf_event_payload(str *, uint64_t *, uint64_t, struct dtmf_event *, dtmf_event_q *);
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void dtmf_event_free(struct dtmf_event *);
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int dtmf_code_from_char(char);
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char dtmf_code_to_char(int code);
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const char *dtmf_inject(struct call_media *media, int code, int volume, int duration, int pause,
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struct call_media *sink);
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bool dtmf_do_logging(const call_t *, bool injected);
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void dtmf_dsp_event(const struct dtmf_event *new_event, struct dtmf_event *cur_event,
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struct call_media *media, int clockrate, uint64_t ts, bool injected);
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enum block_dtmf_mode dtmf_get_block_mode(call_t *call, struct call_monologue *ml);
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bool is_pcm_dtmf_block_mode(enum block_dtmf_mode mode);
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bool is_dtmf_replace_mode(enum block_dtmf_mode mode);
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struct dtmf_event *is_in_dtmf_event(dtmf_event_q *, uint32_t ts, int clockrate, unsigned int head,
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unsigned int trail);
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void dtmf_trigger_set(struct call_monologue *ml, enum dtmf_trigger_type,
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const str *s, bool inactive);
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extern struct dtmf_trigger_action dtmf_trigger_actions[__NUM_DTMF_TRIGGERS];
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#endif
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