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spandsp 0.0.6
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#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.