| spandsp 0.0.6
    | 
#include <inttypes.h>#include <string.h>#include <stdio.h>#include <stdlib.h>#include "floating_fudge.h"#include "spandsp/telephony.h"#include "spandsp/logging.h"#include "spandsp/complex.h"#include "spandsp/vector_float.h"#include "spandsp/complex_vector_float.h"#include "spandsp/vector_int.h"#include "spandsp/complex_vector_int.h"#include "spandsp/async.h"#include "spandsp/power_meter.h"#include "spandsp/arctan2.h"#include "spandsp/dds.h"#include "spandsp/complex_filters.h"#include "spandsp/v29rx.h"#include "spandsp/v22bis.h"#include "spandsp/private/logging.h"#include "spandsp/private/v22bis.h"#include "v22bis_rx_1200_floating_rrc.h"#include "v22bis_rx_2400_floating_rrc.h"| Macros | |
| #define | FP_SCALE(x) (x) | 
| #define | ms_to_symbols(t) (((t)*600)/1000) | 
| #define | EQUALIZER_DELTA 0.25f | 
| #define | PULSESHAPER_COEFF_SETS 12 | 
| Functions | |
| float | v22bis_rx_carrier_frequency (v22bis_state_t *s) | 
| float | v22bis_rx_symbol_timing_correction (v22bis_state_t *s) | 
| float | v22bis_rx_signal_power (v22bis_state_t *s) | 
| void | v22bis_rx_signal_cutoff (v22bis_state_t *s, float cutoff) | 
| void | v22bis_report_status_change (v22bis_state_t *s, int status) | 
| int | v22bis_rx_equalizer_state (v22bis_state_t *s, complexf_t **coeffs) | 
| Get a snapshot of the current equalizer coefficients. | |
| void | v22bis_equalizer_coefficient_reset (v22bis_state_t *s) | 
| int | v22bis_rx (v22bis_state_t *s, const int16_t amp[], int len) | 
| int | v22bis_rx_fillin (v22bis_state_t *s, int len) | 
| int | v22bis_rx_restart (v22bis_state_t *s) | 
| Reinitialise an existing V.22bis modem receive context. | |
| void | v22bis_rx_set_qam_report_handler (v22bis_state_t *s, qam_report_handler_t handler, void *user_data) | 
| #define EQUALIZER_DELTA 0.25f | 
The adaption rate coefficient for the equalizer
| #define PULSESHAPER_COEFF_SETS 12 | 
The number of phase shifted coefficient set for the pulse shaping/bandpass filter
| float v22bis_rx_carrier_frequency | ( | v22bis_state_t * | s | ) | 
Get the current received carrier frequency.
| s | The modem context. | 
References v22bis_state_s::carrier_phase_rate, and dds_frequencyf().
| int v22bis_rx_equalizer_state | ( | v22bis_state_t * | s, | 
| complexf_t ** | coeffs | ||
| ) | 
Get a snapshot of the current equalizer coefficients.
Get a snapshot of the current equalizer coefficients.
| coeffs | The vector of complex coefficients. | 
References v22bis_state_s::eq_coeff.
| int v22bis_rx_restart | ( | v22bis_state_t * | s | ) | 
Reinitialise an existing V.22bis modem receive context.
Reinitialise an existing V.22bis modem receive context.
| s | The modem context. | 
References v22bis_state_s::agc_scaling, v22bis_state_s::baud_phase, v22bis_state_s::calling_party, v22bis_state_s::carrier_phase, v22bis_state_s::carrier_phase_rate, v22bis_state_s::carrier_track_i, v22bis_state_s::carrier_track_p, v22bis_state_s::constellation_state, dds_phase_ratef(), v22bis_state_s::gardner_integrate, v22bis_state_s::gardner_step, power_meter_init(), v22bis_state_s::rrc_filter, v22bis_state_s::rrc_filter_step, v22bis_state_s::rx_power, v22bis_state_s::scramble_reg, v22bis_state_s::scrambler_pattern_count, v22bis_state_s::signal_present, v22bis_state_s::total_baud_timing_correction, v22bis_state_s::training, v22bis_state_s::training_count, v22bis_state_s::training_error, and v22bis_rx_signal_cutoff().
| void v22bis_rx_set_qam_report_handler | ( | v22bis_state_t * | s, | 
| qam_report_handler_t | handler, | ||
| void * | user_data | ||
| ) | 
Set a handler routine to process QAM status reports
| s | The modem context. | 
| handler | The handler routine. | 
| user_data | An opaque pointer passed to the handler routine. | 
References v22bis_state_s::qam_report, and v22bis_state_s::qam_user_data.
| void v22bis_rx_signal_cutoff | ( | v22bis_state_t * | s, | 
| float | cutoff | ||
| ) | 
Set the power level at which the carrier detection will cut in
| s | The modem context. | 
| cutoff | The signal cutoff power, in dBm0. | 
References v22bis_state_s::carrier_off_power, v22bis_state_s::carrier_on_power, and power_meter_level_dbm0().
Referenced by v22bis_rx_restart().
| float v22bis_rx_signal_power | ( | v22bis_state_t * | s | ) | 
Get a current received signal power.
| s | The modem context. | 
References power_meter_current_dbm0(), and v22bis_state_s::rx_power.
| float v22bis_rx_symbol_timing_correction | ( | v22bis_state_t * | s | ) | 
Get the current symbol timing correction since startup.
| s | The modem context. | 
References PULSESHAPER_COEFF_SETS, and v22bis_state_s::total_baud_timing_correction.