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spandsp 0.0.6
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#include <stdlib.h>#include <inttypes.h>#include <string.h>#include <stdio.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/v27ter_rx.h"#include "spandsp/private/logging.h"#include "spandsp/private/v27ter_rx.h"#include "v27ter_rx_4800_floating_rrc.h"#include "v27ter_rx_2400_floating_rrc.h"Macros | |
| #define | IAXMODEM_STUFF |
| #define | CARRIER_NOMINAL_FREQ 1800.0f |
| #define | BAUD_RATE_2400 1200 |
| #define | BAUD_RATE_4800 1600 |
| #define | EQUALIZER_DELTA 0.25f |
| #define | V27TER_TRAINING_SEG_3_LEN 50 |
| #define | V27TER_TRAINING_SEG_5_LEN 1074 |
| #define | V27TER_TRAINING_SEG_6_LEN 8 |
Functions | |
| float | v27ter_rx_carrier_frequency (v27ter_rx_state_t *s) |
| float | v27ter_rx_symbol_timing_correction (v27ter_rx_state_t *s) |
| float | v27ter_rx_signal_power (v27ter_rx_state_t *s) |
| void | v27ter_rx_signal_cutoff (v27ter_rx_state_t *s, float cutoff) |
| int | v27ter_rx_equalizer_state (v27ter_rx_state_t *s, complexf_t **coeffs) |
| Get a snapshot of the current equalizer coefficients. | |
| int | v27ter_rx (v27ter_rx_state_t *s, const int16_t amp[], int len) |
| int | v27ter_rx_fillin (v27ter_rx_state_t *s, int len) |
| void | v27ter_rx_set_put_bit (v27ter_rx_state_t *s, put_bit_func_t put_bit, void *user_data) |
| Change the put_bit function associated with a V.27ter modem receive context. | |
| void | v27ter_rx_set_modem_status_handler (v27ter_rx_state_t *s, modem_status_func_t handler, void *user_data) |
| Change the modem status report function associated with a V.27ter modem receive context. | |
| logging_state_t * | v27ter_rx_get_logging_state (v27ter_rx_state_t *s) |
| Get the logging context associated with a V.27ter modem receive context. | |
| int | v27ter_rx_restart (v27ter_rx_state_t *s, int bit_rate, int old_train) |
| Reinitialise an existing V.27ter modem receive context. | |
| v27ter_rx_state_t * | v27ter_rx_init (v27ter_rx_state_t *s, int bit_rate, put_bit_func_t put_bit, void *user_data) |
| Initialise a V.27ter modem receive context. | |
| int | v27ter_rx_release (v27ter_rx_state_t *s) |
| Release a V.27ter modem receive context. | |
| int | v27ter_rx_free (v27ter_rx_state_t *s) |
| Free a V.27ter modem receive context. | |
| void | v27ter_rx_set_qam_report_handler (v27ter_rx_state_t *s, qam_report_handler_t handler, void *user_data) |
| #define BAUD_RATE_2400 1200 |
The nominal baud or symbol rate in 2400bps mode
| #define BAUD_RATE_4800 1600 |
The nominal baud or symbol rate in 4800bps mode
| #define CARRIER_NOMINAL_FREQ 1800.0f |
The nominal frequency of the carrier, in Hertz
| #define EQUALIZER_DELTA 0.25f |
The adaption rate coefficient for the equalizer
| #define V27TER_TRAINING_SEG_3_LEN 50 |
The length of training segment 3, in symbols
| #define V27TER_TRAINING_SEG_5_LEN 1074 |
The length of training segment 5, in symbols
| #define V27TER_TRAINING_SEG_6_LEN 8 |
The length of training segment 6, in symbols
| float v27ter_rx_carrier_frequency | ( | v27ter_rx_state_t * | s | ) |
Get the current received carrier frequency.
| s | The modem context. |
References v27ter_rx_state_s::carrier_phase_rate, and dds_frequencyf().
| int v27ter_rx_equalizer_state | ( | v27ter_rx_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 v27ter_rx_state_s::eq_coeff.
| int v27ter_rx_free | ( | v27ter_rx_state_t * | s | ) |
Free a V.27ter modem receive context.
Free a V.27ter modem receive context.
| s | The modem context. |
| logging_state_t * v27ter_rx_get_logging_state | ( | v27ter_rx_state_t * | s | ) |
Get the logging context associated with a V.27ter modem receive context.
Get the logging context associated with a V.27ter modem receive context.
| s | The modem context. |
References v27ter_rx_state_s::logging.
| v27ter_rx_state_t * v27ter_rx_init | ( | v27ter_rx_state_t * | s, |
| int | bit_rate, | ||
| put_bit_func_t | put_bit, | ||
| void * | user_data | ||
| ) |
Initialise a V.27ter modem receive context.
Initialise a V.27ter modem receive context.
| s | The modem context. |
| bit_rate | The bit rate of the modem. Valid values are 2400 and 4800. |
| put_bit | The callback routine used to put the received data. |
| user_data | An opaque pointer passed to the put_bit routine. |
References v27ter_rx_state_s::logging, v27ter_rx_state_s::put_bit, v27ter_rx_state_s::put_bit_user_data, v27ter_rx_restart(), and v27ter_rx_signal_cutoff().
| int v27ter_rx_release | ( | v27ter_rx_state_t * | s | ) |
Release a V.27ter modem receive context.
Release a V.27ter modem receive context.
| s | The modem context. |
| int v27ter_rx_restart | ( | v27ter_rx_state_t * | s, |
| int | bit_rate, | ||
| int | old_train | ||
| ) |
Reinitialise an existing V.27ter modem receive context.
Reinitialise an existing V.27ter modem receive context.
| s | The modem context. |
| bit_rate | The bit rate of the modem. Valid values are 2400 and 4800. |
| old_train | TRUE if a previous trained values are to be reused. |
References v27ter_rx_state_s::agc_scaling, v27ter_rx_state_s::agc_scaling_save, v27ter_rx_state_s::baud_half, v27ter_rx_state_s::bit_rate, v27ter_rx_state_s::carrier_drop_pending, CARRIER_NOMINAL_FREQ, v27ter_rx_state_s::carrier_phase, v27ter_rx_state_s::carrier_phase_rate, v27ter_rx_state_s::carrier_phase_rate_save, v27ter_rx_state_s::carrier_track_i, v27ter_rx_state_s::carrier_track_p, v27ter_rx_state_s::constellation_state, v27ter_rx_state_s::diff_angles, v27ter_rx_state_s::eq_skip, v27ter_rx_state_s::gardner_integrate, v27ter_rx_state_s::gardner_step, v27ter_rx_state_s::high_sample, v27ter_rx_state_s::last_sample, v27ter_rx_state_s::logging, v27ter_rx_state_s::low_samples, v27ter_rx_state_s::old_train, v27ter_rx_state_s::power, power_meter_init(), v27ter_rx_state_s::rrc_filter, v27ter_rx_state_s::rrc_filter_step, v27ter_rx_state_s::scramble_reg, v27ter_rx_state_s::scrambler_pattern_count, v27ter_rx_state_s::signal_present, span_log(), v27ter_rx_state_s::total_baud_timing_correction, v27ter_rx_state_s::training_bc, v27ter_rx_state_s::training_count, v27ter_rx_state_s::training_error, and v27ter_rx_state_s::training_stage.
Referenced by v27ter_rx_init().
| void v27ter_rx_set_modem_status_handler | ( | v27ter_rx_state_t * | s, |
| modem_status_func_t | handler, | ||
| void * | user_data | ||
| ) |
Change the modem status report function associated with a V.27ter modem receive context.
Change the modem status report function associated with a V.27ter modem receive context.
| s | The modem context. |
| handler | The callback routine used to report modem status changes. |
| user_data | An opaque pointer. |
References v27ter_rx_state_s::status_handler, and v27ter_rx_state_s::status_user_data.
| void v27ter_rx_set_put_bit | ( | v27ter_rx_state_t * | s, |
| put_bit_func_t | put_bit, | ||
| void * | user_data | ||
| ) |
Change the put_bit function associated with a V.27ter modem receive context.
Change the put_bit function associated with a V.27ter modem receive context.
| s | The modem context. |
| put_bit | The callback routine used to handle received bits. |
| user_data | An opaque pointer. |
References v27ter_rx_state_s::put_bit, and v27ter_rx_state_s::put_bit_user_data.
| void v27ter_rx_set_qam_report_handler | ( | v27ter_rx_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 v27ter_rx_state_s::qam_report, and v27ter_rx_state_s::qam_user_data.
| void v27ter_rx_signal_cutoff | ( | v27ter_rx_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 v27ter_rx_state_s::carrier_off_power, v27ter_rx_state_s::carrier_on_power, and power_meter_level_dbm0().
Referenced by v27ter_rx_init().
| float v27ter_rx_signal_power | ( | v27ter_rx_state_t * | s | ) |
Get a current received signal power.
| s | The modem context. |
References v27ter_rx_state_s::power, and power_meter_current_dbm0().
| float v27ter_rx_symbol_timing_correction | ( | v27ter_rx_state_t * | s | ) |
Get the current symbol timing correction since startup.
| s | The modem context. |
References v27ter_rx_state_s::bit_rate, and v27ter_rx_state_s::total_baud_timing_correction.