libspandsp 0.0.4
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#include <stdio.h>
#include <inttypes.h>
#include <stdlib.h>
#include <string.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/async.h"
#include "spandsp/dds.h"
#include "spandsp/power_meter.h"
#include "spandsp/v29tx.h"
#include "v29tx_floating_rrc.h"
Defines | |
#define | CARRIER_NOMINAL_FREQ 1700.0f |
#define | V29_TRAINING_SEG_TEP 0 |
#define | V29_TRAINING_SEG_1 (V29_TRAINING_SEG_TEP + 480) |
#define | V29_TRAINING_SEG_2 (V29_TRAINING_SEG_1 + 48) |
#define | V29_TRAINING_SEG_3 (V29_TRAINING_SEG_2 + 128) |
#define | V29_TRAINING_SEG_4 (V29_TRAINING_SEG_3 + 384) |
#define | V29_TRAINING_END (V29_TRAINING_SEG_4 + 48) |
#define | V29_TRAINING_SHUTDOWN_END (V29_TRAINING_END + 32) |
Functions | |
int | v29_tx (v29_tx_state_t *s, int16_t amp[], int len) |
void | v29_tx_power (v29_tx_state_t *s, float power) |
Adjust a V.29 modem transmit context's output power. | |
void | v29_tx_set_get_bit (v29_tx_state_t *s, get_bit_func_t get_bit, void *user_data) |
Change the get_bit function associated with a V.29 modem transmit context. | |
int | v29_tx_restart (v29_tx_state_t *s, int bit_rate, int tep) |
Reinitialise an existing V.29 modem transmit context. | |
v29_tx_state_t * | v29_tx_init (v29_tx_state_t *s, int bit_rate, int tep, get_bit_func_t get_bit, void *user_data) |
Initialise a V.29 modem transmit context. | |
int | v29_tx_free (v29_tx_state_t *s) |
Free a V.29 modem transmit context. |
int v29_tx_free | ( | v29_tx_state_t * | s | ) |
Free a V.29 modem transmit context.
Free a V.29 modem transmit context.
s | The modem context. |
v29_tx_state_t* v29_tx_init | ( | v29_tx_state_t * | s, |
int | bit_rate, | ||
int | tep, | ||
get_bit_func_t | get_bit, | ||
void * | user_data | ||
) |
Initialise a V.29 modem transmit context.
Initialise a V.29 modem transmit context. This must be called before the first use of the context, to initialise its contents.
s | The modem context. |
bit_rate | The bit rate of the modem. Valid values are 4800, 7200 and 9600. |
tep | TRUE is the optional TEP tone is to be transmitted. |
get_bit | The callback routine used to get the data to be transmitted. |
user_data | An opaque pointer. |
References v29_tx_state_t::carrier_phase_rate, dds_phase_ratef(), v29_tx_state_t::get_bit, v29_tx_state_t::logging, v29_tx_state_t::user_data, v29_tx_power(), and v29_tx_restart().
Referenced by fax_init(), t31_init(), and t38_gateway_init().
void v29_tx_power | ( | v29_tx_state_t * | s, |
float | power | ||
) |
Adjust a V.29 modem transmit context's output power.
Adjust a V.29 modem transmit context's power output.
s | The modem context. |
power | The power level, in dBm0 |
References v29_tx_state_t::base_gain.
Referenced by v29_tx_init().
int v29_tx_restart | ( | v29_tx_state_t * | s, |
int | bit_rate, | ||
int | tep | ||
) |
Reinitialise an existing V.29 modem transmit context.
Reinitialise an existing V.29 modem transmit context, so it may be reused.
s | The modem context. |
bit_rate | The bit rate of the modem. Valid values are 4800, 7200 and 9600. |
tep | TRUE is the optional TEP tone is to be transmitted. |
References v29_tx_state_t::baud_phase, v29_tx_state_t::bit_rate, v29_tx_state_t::carrier_phase, v29_tx_state_t::constellation_state, v29_tx_state_t::current_get_bit, v29_tx_state_t::in_training, v29_tx_state_t::logging, v29_tx_state_t::rrc_filter, v29_tx_state_t::rrc_filter_step, v29_tx_state_t::scramble_reg, span_log(), v29_tx_state_t::training_offset, v29_tx_state_t::training_scramble_reg, and v29_tx_state_t::training_step.
Referenced by v29_tx_init().
void v29_tx_set_get_bit | ( | v29_tx_state_t * | s, |
get_bit_func_t | get_bit, | ||
void * | user_data | ||
) |
Change the get_bit function associated with a V.29 modem transmit context.
Change the get_bit function associated with a V.29 modem transmit context.
s | The modem context. |
get_bit | The callback routine used to get the data to be transmitted. |
user_data | An opaque pointer. |
References v29_tx_state_t::current_get_bit, v29_tx_state_t::get_bit, and v29_tx_state_t::user_data.