t38_non_ecm_buffer.c File Reference

#include <inttypes.h>
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <time.h>
#include <string.h>
#include "floating_fudge.h"
#include <assert.h>
#include "spandsp/telephony.h"
#include "spandsp/logging.h"
#include "spandsp/queue.h"
#include "spandsp/dc_restore.h"
#include "spandsp/bit_operations.h"
#include "spandsp/async.h"
#include "spandsp/t38_non_ecm_buffer.h"
#include "spandsp/private/t38_non_ecm_buffer.h"

Enumerations
enum	{ TCF_AT_INITIAL_ALL_ONES = 0, TCF_AT_ALL_ZEROS = 1, IMAGE_WAITING_FOR_FIRST_EOL = 2, IMAGE_IN_PROGRESS = 3 }
Functions
int	t38_non_ecm_buffer_get_bit (void *user_data)
void	t38_non_ecm_buffer_push (t38_non_ecm_buffer_state_t *s)
	Inform a T.38 rate adapting non-ECM buffer context that the incoming data has finished, and the contents of the buffer should be played out as quickly as possible.
void	t38_non_ecm_buffer_inject (t38_non_ecm_buffer_state_t *s, const uint8_t *buf, int len)
	Inject data to T.38 rate adapting non-ECM buffer context.
void	t38_non_ecm_buffer_report_input_status (t38_non_ecm_buffer_state_t *s, logging_state_t *logging)
	Report the input status of a T.38 rate adapting non-ECM buffer context to the specified logging context.
void	t38_non_ecm_buffer_report_output_status (t38_non_ecm_buffer_state_t *s, logging_state_t *logging)
	Report the output status of a T.38 rate adapting non-ECM buffer context to the specified logging context.
void	t38_non_ecm_buffer_set_mode (t38_non_ecm_buffer_state_t *s, int mode, int min_bits_per_row)
	Set the mode of a T.38 rate adapting non-ECM buffer context.
t38_non_ecm_buffer_state_t *	t38_non_ecm_buffer_init (t38_non_ecm_buffer_state_t *s, int mode, int min_bits_per_row)
	Initialise a T.38 rate adapting non-ECM buffer context.
int	t38_non_ecm_buffer_release (t38_non_ecm_buffer_state_t *s)
int	t38_non_ecm_buffer_free (t38_non_ecm_buffer_state_t *s)

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Detailed Description

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Function Documentation

t38_non_ecm_buffer_state_t* t38_non_ecm_buffer_init	(	t38_non_ecm_buffer_state_t *	s,
		int	mode,
		int	min_row_bits
	)

Initialise a T.38 rate adapting non-ECM buffer context.

Parameters:

	s	The buffer context.
	mode	TRUE for image data mode, or FALSE for TCF mode.
	bits	The minimum number of bits per FAX image row.

Returns:

A pointer to the buffer context, or NULL if there was a problem.

void t38_non_ecm_buffer_inject	(	t38_non_ecm_buffer_state_t *	s,
		const uint8_t *	buf,
		int	len
	)

Inject data to T.38 rate adapting non-ECM buffer context.

Parameters:

	s	The buffer context.
	buf	The data buffer to be injected.
	len	The length of the data to be injected.

void t38_non_ecm_buffer_push

(

t38_non_ecm_buffer_state_t *

s

)

Inform a T.38 rate adapting non-ECM buffer context that the incoming data has finished, and the contents of the buffer should be played out as quickly as possible.

Parameters:

s

The buffer context.

void t38_non_ecm_buffer_report_input_status	(	t38_non_ecm_buffer_state_t *	s,
		logging_state_t *	logging
	)

Report the input status of a T.38 rate adapting non-ECM buffer context to the specified logging context.

Parameters:

	s	The buffer context.
	logging	The logging context.

void t38_non_ecm_buffer_report_output_status	(	t38_non_ecm_buffer_state_t *	s,
		logging_state_t *	logging
	)

Report the output status of a T.38 rate adapting non-ECM buffer context to the specified logging context.

Parameters:

	s	The buffer context.
	logging	The logging context.

void t38_non_ecm_buffer_set_mode	(	t38_non_ecm_buffer_state_t *	s,
		int	mode,
		int	min_row_bits
	)

Set the mode of a T.38 rate adapting non-ECM buffer context.

Parameters:

	s	The buffer context.
	mode	TRUE for image data mode, or FALSE for TCF mode.
	bits	The minimum number of bits per FAX image row.

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