Defines |
#define | DEFAULT_DTMF_TX_LEVEL -10 |
#define | DEFAULT_DTMF_TX_ON_TIME 50 |
#define | DEFAULT_DTMF_TX_OFF_TIME 55 |
#define | DTMF_THRESHOLD 171032462.0f |
#define | DTMF_NORMAL_TWIST 6.309f |
#define | DTMF_REVERSE_TWIST 2.512f |
#define | DTMF_RELATIVE_PEAK_ROW 6.309f |
#define | DTMF_RELATIVE_PEAK_COL 6.309f |
#define | DTMF_TO_TOTAL_ENERGY 83.868f |
#define | DTMF_POWER_OFFSET 110.395f |
#define | DTMF_SAMPLES_PER_BLOCK 102 |
Functions |
int | dtmf_rx (dtmf_rx_state_t *s, const int16_t amp[], int samples) |
int | dtmf_rx_status (dtmf_rx_state_t *s) |
size_t | dtmf_rx_get (dtmf_rx_state_t *s, char *buf, int max) |
void | dtmf_rx_set_realtime_callback (dtmf_rx_state_t *s, tone_report_func_t callback, void *user_data) |
void | dtmf_rx_parms (dtmf_rx_state_t *s, int filter_dialtone, int twist, int reverse_twist, int threshold) |
dtmf_rx_state_t * | dtmf_rx_init (dtmf_rx_state_t *s, digits_rx_callback_t callback, void *user_data) |
int | dtmf_rx_release (dtmf_rx_state_t *s) |
int | dtmf_rx_free (dtmf_rx_state_t *s) |
int | dtmf_tx (dtmf_tx_state_t *s, int16_t amp[], int max_samples) |
int | dtmf_tx_put (dtmf_tx_state_t *s, const char *digits, int len) |
void | dtmf_tx_set_level (dtmf_tx_state_t *s, int level, int twist) |
void | dtmf_tx_set_timing (dtmf_tx_state_t *s, int on_time, int off_time) |
dtmf_tx_state_t * | dtmf_tx_init (dtmf_tx_state_t *s) |
int | dtmf_tx_release (dtmf_tx_state_t *s) |
int | dtmf_tx_free (dtmf_tx_state_t *s) |