#include <stdlib.h>#include <inttypes.h>#include <string.h>#include <stdio.h>#include <tgmath.h>#include <math.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/v17tx.h"#include "spandsp/v17rx.h"#include "spandsp/private/logging.h"#include "spandsp/private/v17rx.h"#include "v17tx_constellation_maps.h"#include "v17rx_constellation_maps.h"#include "v17rx_floating_rrc.h"Defines | |
| #define | IAXMODEM_STUFF |
| #define | CARRIER_NOMINAL_FREQ 1800.0f |
| #define | BAUD_RATE 2400 |
| #define | EQUALIZER_DELTA 0.21f |
| #define | EQUALIZER_SLOW_ADAPT_RATIO 0.1f |
| #define | V17_TRAINING_SEG_1_LEN 256 |
| #define | V17_TRAINING_SEG_2_LEN 2976 |
| #define | V17_TRAINING_SHORT_SEG_2_LEN 38 |
| #define | V17_TRAINING_SEG_3_LEN 64 |
| #define | V17_TRAINING_SEG_4A_LEN 15 |
| #define | V17_TRAINING_SEG_4_LEN 48 |
| #define | V17_BRIDGE_WORD 0x8880 |
| #define | V17_EQUALIZER_LEN (V17_EQUALIZER_PRE_LEN + 1 + V17_EQUALIZER_POST_LEN) |
| #define | SYNC_LOW_BAND_EDGE_COEFF_0 1.764193f |
| #define | SYNC_LOW_BAND_EDGE_COEFF_1 -0.980100f |
| #define | SYNC_HIGH_BAND_EDGE_COEFF_0 -1.400072f |
| #define | SYNC_HIGH_BAND_EDGE_COEFF_1 -0.980100f |
| #define | SYNC_CROSS_CORR_COEFF_A -0.932131f |
| #define | SYNC_CROSS_CORR_COEFF_B 0.700036f |
| #define | SYNC_CROSS_CORR_COEFF_C -0.449451f |
Enumerations | |
| enum | { TRAINING_STAGE_NORMAL_OPERATION = 0, TRAINING_STAGE_SYMBOL_ACQUISITION, TRAINING_STAGE_LOG_PHASE, TRAINING_STAGE_SHORT_WAIT_FOR_CDBA, TRAINING_STAGE_WAIT_FOR_CDBA, TRAINING_STAGE_COARSE_TRAIN_ON_CDBA, TRAINING_STAGE_FINE_TRAIN_ON_CDBA, TRAINING_STAGE_SHORT_TRAIN_ON_CDBA_AND_TEST, TRAINING_STAGE_TRAIN_ON_CDBA_AND_TEST, TRAINING_STAGE_BRIDGE, TRAINING_STAGE_TCM_WINDUP, TRAINING_STAGE_TEST_ONES, TRAINING_STAGE_PARKED } |
Functions | |
| float | v17_rx_carrier_frequency (v17_rx_state_t *s) |
| float | v17_rx_symbol_timing_correction (v17_rx_state_t *s) |
| float | v17_rx_signal_power (v17_rx_state_t *s) |
| void | v17_rx_signal_cutoff (v17_rx_state_t *s, float cutoff) |
| int | v17_rx_equalizer_state (v17_rx_state_t *s, complexf_t **coeffs) |
| int | v17_rx (v17_rx_state_t *s, const int16_t amp[], int len) |
| int | v17_rx_fillin (v17_rx_state_t *s, int len) |
| void | v17_rx_set_put_bit (v17_rx_state_t *s, put_bit_func_t put_bit, void *user_data) |
| void | v17_rx_set_modem_status_handler (v17_rx_state_t *s, modem_tx_status_func_t handler, void *user_data) |
| logging_state_t * | v17_rx_get_logging_state (v17_rx_state_t *s) |
| int | v17_rx_restart (v17_rx_state_t *s, int bit_rate, int short_train) |
| v17_rx_state_t * | v17_rx_init (v17_rx_state_t *s, int bit_rate, put_bit_func_t put_bit, void *user_data) |
| int | v17_rx_release (v17_rx_state_t *s) |
| int | v17_rx_free (v17_rx_state_t *s) |
| void | v17_rx_set_qam_report_handler (v17_rx_state_t *s, qam_report_handler_t handler, void *user_data) |
| #define BAUD_RATE 2400 |
The nominal baud or symbol rate
| #define CARRIER_NOMINAL_FREQ 1800.0f |
The nominal frequency of the carrier, in Hertz
| #define EQUALIZER_DELTA 0.21f |
The adaption rate coefficient for the equalizer during initial training
| #define EQUALIZER_SLOW_ADAPT_RATIO 0.1f |
The adaption rate coefficient for the equalizer during continuous fine tuning
| #define V17_BRIDGE_WORD 0x8880 |
The 16 bit pattern used in the bridge section of the training sequence
| #define V17_EQUALIZER_LEN (V17_EQUALIZER_PRE_LEN + 1 + V17_EQUALIZER_POST_LEN) |
The length of the equalizer buffer
| #define V17_TRAINING_SEG_1_LEN 256 |
The length of training segment 1, in symbols
| #define V17_TRAINING_SEG_2_LEN 2976 |
The length of training segment 2 in long training mode, in symbols
| #define V17_TRAINING_SEG_3_LEN 64 |
The length of training segment 3, in symbols
| #define V17_TRAINING_SEG_4_LEN 48 |
The length of training segment 4, in symbols
| #define V17_TRAINING_SEG_4A_LEN 15 |
The length of training segment 4A, in symbols
| #define V17_TRAINING_SHORT_SEG_2_LEN 38 |
The length of training segment 2 in short training mode, in symbols
1.6.2