26 #if !defined(_SPANDSP_DTMF_H_)
27 #define _SPANDSP_DTMF_H_
74 #define MAX_DTMF_DIGITS 128
76 typedef void (*digits_rx_callback_t)(
void *user_data,
const char *digits,
int len);
89 #if defined(__cplusplus)
148 tone_report_func_t callback,
198 digits_rx_callback_t callback,
211 #if defined(__cplusplus)
Definition: private/dtmf.h:50
int filter_dialtone
Definition: private/dtmf.h:61
char digits[MAX_DTMF_DIGITS+1]
Definition: private/dtmf.h:105
Definition: private/dtmf.h:33
int dtmf_rx_free(dtmf_rx_state_t *s)
Free a DTMF receiver context.
Definition: dtmf.c:417
dtmf_tx_state_t * dtmf_tx_init(dtmf_tx_state_t *s)
Initialise a DTMF tone generator context.
Definition: dtmf.c:515
void dtmf_rx_set_realtime_callback(dtmf_rx_state_t *s, tone_report_func_t callback, void *user_data)
Set a realtime callback for a DTMF receiver context.
Definition: dtmf.c:323
float threshold
Definition: private/dtmf.h:85
int dtmf_tx_put(dtmf_tx_state_t *s, const char *digits, int len)
Put a string of digits in a DTMF generator's input buffer.
Definition: dtmf.c:481
int dtmf_tx(dtmf_tx_state_t *s, int16_t amp[], int max_samples)
Generate a buffer of DTMF tones.
Definition: dtmf.c:451
int dtmf_tx_free(dtmf_tx_state_t *s)
Free a DTMF tone generator context.
Definition: dtmf.c:539
size_t dtmf_rx_get(dtmf_rx_state_t *s, char *buf, int max)
Get a string of digits from a DTMF receiver's output buffer.
Definition: dtmf.c:308
int dtmf_rx_status(dtmf_rx_state_t *s)
Get the status of DTMF detection during processing of the last audio chunk.
Definition: dtmf.c:298
void dtmf_tx_set_level(dtmf_tx_state_t *s, int level, int twist)
Change the transmit level for a DTMF tone generator context.
Definition: dtmf.c:501
int dtmf_rx(dtmf_rx_state_t *s, const int16_t amp[], int samples)
Process a block of received DTMF audio samples.
Definition: dtmf.c:101
dtmf_rx_state_t * dtmf_rx_init(dtmf_rx_state_t *s, digits_rx_callback_t callback, void *user_data)
Initialise a DTMF receiver context.
Definition: dtmf.c:360
float reverse_twist
Definition: private/dtmf.h:83
void dtmf_tx_set_timing(dtmf_tx_state_t *s, int on_time, int off_time)
Change the transmit on and off time for a DTMF tone generator context.
Definition: dtmf.c:508
void dtmf_rx_parms(dtmf_rx_state_t *s, int filter_dialtone, int twist, int reverse_twist, int threshold)
Adjust a DTMF receiver context.
Definition: dtmf.c:332
int dtmf_tx_release(dtmf_tx_state_t *s)
Release a DTMF tone generator context.
Definition: dtmf.c:533
int dtmf_rx_release(dtmf_rx_state_t *s)
Release a DTMF receiver context.
Definition: dtmf.c:411