28#if !defined(_SPANDSP_V29RX_H_)
29#define _SPANDSP_V29RX_H_
121#if defined(SPANDSP_USE_FIXED_POINT)
122#define V29_CONSTELLATION_SCALING_FACTOR 4096.0
124#define V29_CONSTELLATION_SCALING_FACTOR 1.0
127#if defined(SPANDSP_USE_FIXED_POINT)
128typedef void (*qam_report_handler_t)(
void *user_data,
const complexi16_t *constel,
const complexi16_t *target,
int symbol);
130typedef void (*qam_report_handler_t)(
void *user_data,
const complexf_t *constel,
const complexf_t *target,
int symbol);
139#if defined(__cplusplus)
214#if defined(SPANDSP_USE_FIXED_POINT)
246#if defined(__cplusplus)
void(* modem_status_func_t)(void *user_data, int status)
Definition async.h:113
void(* put_bit_func_t)(void *user_data, int bit)
Definition async.h:107
Definition private/logging.h:34
Definition private/v29rx.h:44
put_bit_func_t put_bit
The callback function used to put each bit received.
Definition private/v29rx.h:48
int bit_rate
The bit rate of the modem. Valid values are 4800, 7200 and 9600.
Definition private/v29rx.h:46
bool old_train
True if the previous trained values are to be reused.
Definition private/v29rx.h:143
int v29_rx_free(v29_rx_state_t *s)
Free a V.29 modem receive context.
Definition v29rx.c:1204
float v29_rx_carrier_frequency(v29_rx_state_t *s)
Definition v29rx.c:168
int v29_rx_equalizer_state(v29_rx_state_t *s, complexf_t **coeffs)
Get a snapshot of the current equalizer coefficients.
Definition v29rx.c:206
int v29_rx_release(v29_rx_state_t *s)
Release a V.29 modem receive context.
Definition v29rx.c:1198
v29_rx_state_t * v29_rx_init(v29_rx_state_t *s, int bit_rate, put_bit_func_t put_bit, void *user_data)
Initialise a V.29 modem receive context.
Definition v29rx.c:1165
void v29_rx_signal_cutoff(v29_rx_state_t *s, float cutoff)
Definition v29rx.c:186
float v29_rx_signal_power(v29_rx_state_t *s)
Definition v29rx.c:180
void v29_rx_set_modem_status_handler(v29_rx_state_t *s, modem_status_func_t handler, void *user_data)
Change the modem status report function associated with a V.29 modem receive context.
Definition v29rx.c:1064
int v29_rx_restart(v29_rx_state_t *s, int bit_rate, bool old_train)
Reinitialise an existing V.29 modem receive context.
Definition v29rx.c:1077
logging_state_t * v29_rx_get_logging_state(v29_rx_state_t *s)
Get the logging context associated with a V.29 modem receive context.
Definition v29rx.c:1071
void v29_rx_set_put_bit(v29_rx_state_t *s, put_bit_func_t put_bit, void *user_data)
Change the put_bit function associated with a V.29 modem receive context.
Definition v29rx.c:1057
void v29_rx_set_qam_report_handler(v29_rx_state_t *s, qam_report_handler_t handler, void *user_data)
Definition v29rx.c:1211
int v29_rx(v29_rx_state_t *s, const int16_t amp[], int len)
Process a block of received V.29 modem audio samples.
Definition v29rx.c:913
float v29_rx_symbol_timing_correction(v29_rx_state_t *s)
Definition v29rx.c:174
int v29_rx_fillin(v29_rx_state_t *s, int len)
Fake processing of a missing block of received V.29 modem audio samples.
Definition v29rx.c:1029