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 <tgmath.h>
#include <math.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"

Functions

int t38_non_ecm_buffer_get_bit (void *user_data)
 Get the next bit of data from a T.38 rate adapting non-ECM buffer context.
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_row_bits)
 Set the mode of a T.38 rate adapting non-ECM buffer context.
t38_non_ecm_buffer_state_tt38_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.
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)

Detailed Description


Function Documentation

int t38_non_ecm_buffer_get_bit ( void *  user_data  ) 

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

Parameters:
user_data The buffer context, cast to a void pointer.
Returns:
The next bit, or one of the values indicating a change of modem status.

References t38_non_ecm_buffer_state_s::bit_no, t38_non_ecm_buffer_state_s::data, t38_non_ecm_buffer_state_s::data_finished, t38_non_ecm_buffer_state_s::flow_control_fill_octet, t38_non_ecm_buffer_state_s::flow_control_fill_octets, t38_non_ecm_buffer_state_s::latest_eol_ptr, t38_non_ecm_buffer_state_s::octet, t38_non_ecm_buffer_state_s::out_octets, t38_non_ecm_buffer_state_s::out_ptr, and T38_NON_ECM_TX_BUF_LEN.

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.

Referenced by t38_gateway_init().

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.

References T38_NON_ECM_TX_BUF_LEN.

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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