fax_modems.h File Reference

Go to the source code of this file.

Typedefs
typedef fax_modems_state_s	fax_modems_state_t
Enumerations
enum	{   FAX_MODEM_NONE = -1, FAX_MODEM_FLUSH = 0, FAX_MODEM_SILENCE_TX, FAX_MODEM_SILENCE_RX,   FAX_MODEM_CED_TONE, FAX_MODEM_CNG_TONE, FAX_MODEM_NOCNG_TONE, FAX_MODEM_V21_TX,   FAX_MODEM_V17_TX, FAX_MODEM_V27TER_TX, FAX_MODEM_V29_TX, FAX_MODEM_V21_RX,   FAX_MODEM_V17_RX, FAX_MODEM_V27TER_RX, FAX_MODEM_V29_RX }
Functions
	SPAN_DECLARE_NONSTD (int) fax_modems_v17_v21_rx(void *user_data
	Get the next bit of data from a T.38 rate adapting non-ECM buffer context.
void	fax_modems_start_rx_modem (fax_modems_state_t *s, int which)
void	fax_modems_set_tep_mode (fax_modems_state_t *s, int use_tep)
int	fax_modems_restart (fax_modems_state_t *s)
fax_modems_state_t *	fax_modems_init (fax_modems_state_t *s, int use_tep, hdlc_frame_handler_t hdlc_accept, hdlc_underflow_handler_t hdlc_tx_underflow, put_bit_func_t non_ecm_put_bit, get_bit_func_t non_ecm_get_bit, tone_report_func_t tone_callback, void *user_data)
int	fax_modems_release (fax_modems_state_t *s)
int	fax_modems_free (fax_modems_state_t *s)
Variables
const int16_t	amp []
const int16_t int	len
const int16_t	amp []
const int16_t int	len
const int16_t	amp []
const int16_t int	len
int	len
int	len
int	len

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Detailed Description

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Typedef Documentation

typedef struct fax_modems_state_s fax_modems_state_t

The set of modems needed for FAX, plus the auxilliary stuff, like tone generation.

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Function Documentation

SPAN_DECLARE_NONSTD

(

int

)

Get the next bit of data from a T.38 rate adapting non-ECM buffer context.

Apply T.30 receive processing to a block of audio samples.

Parameters:

	s	The FAX context.
	amp	The audio sample buffer.
	len	The number of samples in the buffer.

Returns:

The number of samples unprocessed. This should only be non-zero if the software has reached the end of the FAX call.

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