modem_connect_tones.c File Reference

#include <inttypes.h>
#include <stdlib.h>
#include "spandsp/telephony.h"
#include "spandsp/dds.h"
#include "spandsp/tone_detect.h"
#include "spandsp/tone_generate.h"
#include "spandsp/super_tone_rx.h"
#include "spandsp/modem_connect_tones.h"

Functions
int	modem_connect_tones_tx (modem_connect_tones_tx_state_t *s, int16_t amp[], int len)
	Generate a block of echo canceller disable tone samples.
modem_connect_tones_tx_state_t *	modem_connect_tones_tx_init (modem_connect_tones_tx_state_t *s, int tone_type)
	Initialse an instance of the echo canceller disable tone generator.
int	modem_connect_tones_rx (modem_connect_tones_rx_state_t *s, const int16_t amp[], int len)
	Process a block of samples through an instance of the modem_connect tones detector.
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.

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Detailed Description

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Function Documentation

int modem_connect_tones_rx (  modem_connect_tones_rx_state_t *  s, const int16_t  amp[], int  len )

Process a block of samples through an instance of the modem_connect tones detector. Parameters: s  The context. amp  An array of signal samples. len  The number of samples in the array. Returns: The number of unprocessed samples.

int modem_connect_tones_rx_get (  modem_connect_tones_rx_state_t *  s  )

Test if a modem_connect tone has been detected. Parameters: s  The context. Returns: TRUE if tone is detected, else FALSE.

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. Parameters: 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, Returns: A pointer to the context.

int modem_connect_tones_tx (  modem_connect_tones_tx_state_t *  s, int16_t  amp[], int  len )

Generate a block of echo canceller disable tone samples. Parameters: s  The context. amp  An array of signal samples. len  The number of samples to generate. Returns: The number of samples generated.

modem_connect_tones_tx_state_t* modem_connect_tones_tx_init (  modem_connect_tones_tx_state_t *  s, int  tone_type )

Initialse an instance of the echo canceller disable tone generator. Parameters: s  The context.

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