#include <inttypes.h>
#include <stdlib.h>
#include <memory.h>
#include <tgmath.h>
#include <math.h>
#include "floating_fudge.h"
#include <stdio.h>
#include "spandsp/telephony.h"
#include "spandsp/fast_convert.h"
#include "spandsp/logging.h"
#include "spandsp/complex.h"
#include "spandsp/dds.h"
#include "spandsp/tone_detect.h"
#include "spandsp/tone_generate.h"
#include "spandsp/super_tone_rx.h"
#include "spandsp/power_meter.h"
#include "spandsp/async.h"
#include "spandsp/fsk.h"
#include "spandsp/modem_connect_tones.h"
#include "spandsp/private/fsk.h"
#include "spandsp/private/modem_connect_tones.h"
Defines | |
#define | HDLC_FRAMING_OK_THRESHOLD 5 |
Functions | |
const char * | modem_connect_tone_to_str (int tone) |
SPAN_DECLARE_NONSTD (int) | |
Get the next bit of a transmitted serial bit stream. | |
modem_connect_tones_tx_state_t * | modem_connect_tones_tx_init (modem_connect_tones_tx_state_t *s, int tone_type) |
Initialise an instance of the modem connect tones generator. | |
int | modem_connect_tones_tx_release (modem_connect_tones_tx_state_t *s) |
Release an instance of the modem connect tones generator. | |
int | modem_connect_tones_tx_free (modem_connect_tones_tx_state_t *s) |
Free an instance of the modem connect tones generator. | |
int | modem_connect_tones_rx_get (modem_connect_tones_rx_state_t *s) |
Test if a modem_connect tone has been detected. | |
modem_connect_tones_rx_state_t * | modem_connect_tones_rx_init (modem_connect_tones_rx_state_t *s, int tone_type, tone_report_func_t tone_callback, void *user_data) |
Initialise an instance of the modem connect tones detector. | |
int | modem_connect_tones_rx_release (modem_connect_tones_rx_state_t *s) |
Release an instance of the modem connect tones detector. | |
int | modem_connect_tones_rx_free (modem_connect_tones_rx_state_t *s) |
Free an instance of the modem connect tones detector. |
int modem_connect_tones_rx_free | ( | modem_connect_tones_rx_state_t * | s | ) |
Free an instance of the modem connect tones detector.
s | The context. |
int modem_connect_tones_rx_get | ( | modem_connect_tones_rx_state_t * | s | ) |
Test if a modem_connect tone has been detected.
s | The context. |
References MODEM_CONNECT_TONES_NONE.
Referenced by SPAN_DECLARE_NONSTD().
modem_connect_tones_rx_state_t* modem_connect_tones_rx_init | ( | modem_connect_tones_rx_state_t * | s, | |
int | tone_type, | |||
tone_report_func_t | tone_callback, | |||
void * | user_data | |||
) |
Initialise an instance of the modem connect tones detector.
s | The context. | |
tone_type | The type of connect tone being tested for. | |
tone_callback | An optional callback routine, used to report tones | |
user_data | An opaque pointer passed to the callback routine, |
References fsk_rx_init(), fsk_rx_signal_cutoff(), MODEM_CONNECT_TONES_ANS, MODEM_CONNECT_TONES_ANS_PR, MODEM_CONNECT_TONES_ANSAM, MODEM_CONNECT_TONES_ANSAM_PR, MODEM_CONNECT_TONES_FAX_CED_OR_PREAMBLE, MODEM_CONNECT_TONES_FAX_PREAMBLE, and MODEM_CONNECT_TONES_NONE.
int modem_connect_tones_rx_release | ( | modem_connect_tones_rx_state_t * | s | ) |
Release an instance of the modem connect tones detector.
s | The context. |
int modem_connect_tones_tx_free | ( | modem_connect_tones_tx_state_t * | s | ) |
Free an instance of the modem connect tones generator.
s | The context. |
modem_connect_tones_tx_state_t* modem_connect_tones_tx_init | ( | modem_connect_tones_tx_state_t * | s, | |
int | tone_type | |||
) |
Initialise an instance of the modem connect tones generator.
s | The context. |
References dds_phase_rate(), dds_scaling_dbm0(), MODEM_CONNECT_TONES_ANS, MODEM_CONNECT_TONES_ANS_PR, MODEM_CONNECT_TONES_ANSAM, MODEM_CONNECT_TONES_ANSAM_PR, and MODEM_CONNECT_TONES_FAX_CNG.
int modem_connect_tones_tx_release | ( | modem_connect_tones_tx_state_t * | s | ) |
Release an instance of the modem connect tones generator.
s | The context. |
SPAN_DECLARE_NONSTD | ( | int | ) |
Get the next bit of a transmitted serial bit stream.
Get the next bit of data from a T.38 rate adapting non-ECM buffer context.
Get a bit of received non-ECM image data.
Get the next bit of a transmitted serial bit stream.
user_data | An opaque point which must point to a transmitter context. |
Get the next bit of a transmitted serial bit stream.
Process a block of received V.8 audio samples.
Fake processing of a missing block of received V.29 modem audio samples.
Fake processing of a missing block of received V.27ter modem audio samples.
Generate a block of V.22bis modem audio samples.
Fake processing of a missing block of received V.22bis modem audio samples.
Process a block of received V.18 audio samples.
Fake processing of a missing block of received V.17 modem audio samples.
Generate a block of FAX audio samples.
Apply fake received audio processing.
Generate a block of T.31 modem audio samples.
Fake processing of a missing block of received T.31 modem audio samples.
Dummy receive fillin callback.
Dummy receive callback.
Process a block of samples through an instance of the modem connect tones detector.
Get the next sequence of bytes for transmission.
Get the next byte for transmission.
Fake processing of a missing block of received FSK modem audio samples.
Process a block of received FSK modem audio samples.
Apply T.30 transmit processing to generate a block of audio samples.
Apply fake T.30 receive processing when a block of audio samples is missing (e.g due to packet loss).
s | The FAX context. | |
len | The number of samples to fake. |
Apply T.30 transmit processing to generate a block of audio samples.
s | The FAX context. | |
amp | The audio sample buffer. | |
max_len | The number of samples to be generated. |
Process a block of received FSK modem audio samples.
s | The modem context. | |
amp | The audio sample buffer. | |
len | The number of samples in the buffer. |
Fake processing of a missing block of received FSK modem audio samples (e.g due to packet loss).
s | The modem context. | |
len | The number of samples to fake. |
s | A pointer to an HDLC transmitter context. |
s | A pointer to an HDLC transmitter context. | |
buf | The buffer for the data. | |
max_len | The number of bytes to get. |
s | The context. | |
amp | An array of signal samples. | |
len | The number of samples in the array. |
A dummy routine to use as a receive callback, when we aren't really trying to process what is received. It just absorbs and ignores the data.
user_data | The context. | |
amp | The signal.buffer | |
len | The length of the signal buffer |
A dummy routine to use as a receive fillin callback, when we aren't really trying to process what is received. It just absorbs and ignores the request.
user_data | The context. | |
len | The length of the signal buffer |
Fake processing of a missing block of received T.31 modem audio samples (e.g due to packet loss).
s | The T.31 modem context. | |
len | The number of samples to fake. |
Generate a block of T.31 modem audio samples.
s | The T.31 modem context. | |
amp | The audio sample buffer. | |
max_len | The number of samples to be generated. |
Apply fake processing when a block of audio samples is missing (e.g due to packet loss).
s | The T.38 context. | |
len | The number of samples to fake. |
Generate a block of FAX audio samples.
s | The T.38 context. | |
amp | The audio sample buffer. | |
max_len | The number of samples to be generated. |
Fake processing of a missing block of received V.17 modem audio samples. (e.g due to packet loss).
s | The modem context. | |
len | The number of samples to fake. |
Process a block of received V.18 audio samples.
s | The V.18 context. | |
amp | The audio sample buffer. | |
len | The number of samples in the buffer. |
Fake processing of a missing block of received V.22bis modem audio samples. (e.g due to packet loss).
s | The modem context. | |
len | The number of samples to fake. |
Generate a block of V.22bis modem audio samples.
s | The modem context. | |
amp | The audio sample buffer. | |
len | The number of samples to be generated. |
Fake processing of a missing block of received V.27ter modem audio samples. (e.g due to packet loss).
s | The modem context. | |
len | The number of samples to fake. |
Fake processing of a missing block of received V.29 modem audio samples. (e.g due to packet loss).
s | The modem context. | |
len | The number of samples to fake. |
Process a block of received V.8 audio samples.
s | The V.8 context. | |
amp | The audio sample buffer. | |
len | The number of samples in the buffer. |
References MODEM_CONNECT_TONES_ANS, MODEM_CONNECT_TONES_ANS_PR, MODEM_CONNECT_TONES_ANSAM, MODEM_CONNECT_TONES_ANSAM_PR, MODEM_CONNECT_TONES_FAX_CED_OR_PREAMBLE, MODEM_CONNECT_TONES_FAX_CNG, MODEM_CONNECT_TONES_FAX_PREAMBLE, and MODEM_CONNECT_TONES_NONE.