#include <stdlib.h>
#include <inttypes.h>
#include <limits.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <time.h>
#include <memory.h>
#include <string.h>
#include <tgmath.h>
#include <math.h>
#include "floating_fudge.h"
#include <tiffio.h>
#include "spandsp/telephony.h"
#include "spandsp/logging.h"
#include "spandsp/bit_operations.h"
#include "spandsp/async.h"
#include "spandsp/timezone.h"
#include "spandsp/t4_rx.h"
#include "spandsp/t4_tx.h"
#include "spandsp/t4_t6_decode.h"
#include "spandsp/t4_t6_encode.h"
#include "spandsp/version.h"
#include "spandsp/private/logging.h"
#include "spandsp/private/t4_t6_decode.h"
#include "spandsp/private/t4_t6_encode.h"
#include "spandsp/private/t4_rx.h"
#include "spandsp/private/t4_tx.h"
#include "t4_t6_decode_states.h"
Defines | |
#define | CM_PER_INCH 2.54f |
#define | EOLS_TO_END_ANY_RX_PAGE 6 |
#define | EOLS_TO_END_T4_RX_PAGE 5 |
#define | EOLS_TO_END_T6_RX_PAGE 2 |
#define | STATE_TRACE(...) |
Functions | |
int | t4_rx_end_page (t4_state_t *s) |
Complete the reception of a page. | |
int | t4_rx_put_bit (t4_state_t *s, int bit) |
Put a bit of the current document page. | |
int | t4_rx_put_byte (t4_state_t *s, uint8_t byte) |
Put a byte of the current document page. | |
int | t4_rx_put_chunk (t4_state_t *s, const uint8_t buf[], int len) |
Put a byte of the current document page. | |
int | t4_rx_set_row_write_handler (t4_state_t *s, t4_row_write_handler_t handler, void *user_data) |
Set the row write handler for a T.4 receive context. | |
t4_state_t * | t4_rx_init (t4_state_t *s, const char *file, int output_encoding) |
Prepare for reception of a document. | |
int | t4_rx_start_page (t4_state_t *s) |
Prepare to receive the next page of the current document. | |
int | t4_rx_release (t4_state_t *s) |
End reception of a document. Tidy up and close the file. This should be used to end T.4 reception started with t4_rx_init. | |
int | t4_rx_free (t4_state_t *s) |
End reception of a document. Tidy up, close the file and free the context. This should be used to end T.4 reception started with t4_rx_init. | |
void | t4_rx_set_rx_encoding (t4_state_t *s, int encoding) |
Set the encoding for the received data. | |
void | t4_rx_set_image_width (t4_state_t *s, int width) |
Set the expected width of the received image, in pixel columns. | |
void | t4_rx_set_y_resolution (t4_state_t *s, int resolution) |
Set the row-to-row (y) resolution to expect for a received image. | |
void | t4_rx_set_x_resolution (t4_state_t *s, int resolution) |
Set the column-to-column (x) resolution to expect for a received image. | |
void | t4_rx_set_dcs (t4_state_t *s, const char *dcs) |
Set the DCS information of the fax, for inclusion in the file. | |
void | t4_rx_set_sub_address (t4_state_t *s, const char *sub_address) |
Set the sub-address of the fax, for inclusion in the file. | |
void | t4_rx_set_far_ident (t4_state_t *s, const char *ident) |
Set the identity of the remote machine, for inclusion in the file. | |
void | t4_rx_set_vendor (t4_state_t *s, const char *vendor) |
Set the vendor of the remote machine, for inclusion in the file. | |
void | t4_rx_set_model (t4_state_t *s, const char *model) |
Set the model of the remote machine, for inclusion in the file. | |
void | t4_rx_get_transfer_statistics (t4_state_t *s, t4_stats_t *t) |
Get the current transfer statistics. | |
const char * | t4_encoding_to_str (int encoding) |
Get the short text name of an encoding format. |
#define CM_PER_INCH 2.54f |
The number of centimetres in one inch
#define EOLS_TO_END_ANY_RX_PAGE 6 |
The number of EOLs to expect at the end of a T.4 page
Referenced by t4_rx_end_page().
#define EOLS_TO_END_T4_RX_PAGE 5 |
The number of EOLs to check at the end of a T.4 page
#define EOLS_TO_END_T6_RX_PAGE 2 |
The number of EOLs to check at the end of a T.6 page
const char* t4_encoding_to_str | ( | int | encoding | ) |
Get the short text name of an encoding format.
Get the short text name of an encoding format.
encoding | The encoding type. |
References T4_COMPRESSION_ITU_SYCC_T42, T4_COMPRESSION_ITU_T42, T4_COMPRESSION_ITU_T43, T4_COMPRESSION_ITU_T45, T4_COMPRESSION_ITU_T4_1D, T4_COMPRESSION_ITU_T4_2D, T4_COMPRESSION_ITU_T6, T4_COMPRESSION_ITU_T85, T4_COMPRESSION_ITU_T85_L0, and T4_COMPRESSION_NONE.
int t4_rx_end_page | ( | t4_state_t * | s | ) |
Complete the reception of a page.
s | The T.4 receive context. |
References EOLS_TO_END_ANY_RX_PAGE, span_log(), T4_COMPRESSION_ITU_T6, and t4_rx_put_bit().
int t4_rx_free | ( | t4_state_t * | s | ) |
End reception of a document. Tidy up, close the file and free the context. This should be used to end T.4 reception started with t4_rx_init.
s | The T.4 receive context. |
References t4_rx_release().
void t4_rx_get_transfer_statistics | ( | t4_state_t * | s, | |
t4_stats_t * | t | |||
) |
Get the current transfer statistics.
Get the current image transfer statistics.
s | The T.4 context. | |
t | A pointer to a statistics structure. |
Referenced by t30_get_transfer_statistics().
t4_state_t* t4_rx_init | ( | t4_state_t * | s, | |
const char * | file, | |||
int | output_encoding | |||
) |
Prepare for reception of a document.
s | The T.4 context. | |
file | The name of the file to be received. | |
output_encoding | The output encoding. |
References span_log(), T4_COMPRESSION_ITU_T4_1D, T4_COMPRESSION_ITU_T4_2D, and T4_COMPRESSION_ITU_T6.
int t4_rx_put_bit | ( | t4_state_t * | s, | |
int | bit | |||
) |
Put a bit of the current document page.
s | The T.4 context. | |
bit | The data bit. |
Referenced by t4_rx_end_page().
int t4_rx_put_byte | ( | t4_state_t * | s, | |
uint8_t | byte | |||
) |
Put a byte of the current document page.
s | The T.4 context. | |
byte | The data byte. |
Referenced by t30_non_ecm_put_byte().
int t4_rx_put_chunk | ( | t4_state_t * | s, | |
const uint8_t | buf[], | |||
int | len | |||
) |
Put a byte of the current document page.
s | The T.4 context. | |
buf | The buffer containing the chunk. | |
len | The length of the chunk. |
Referenced by t30_non_ecm_put_chunk().
int t4_rx_release | ( | t4_state_t * | s | ) |
End reception of a document. Tidy up and close the file. This should be used to end T.4 reception started with t4_rx_init.
s | The T.4 receive context. |
Referenced by t4_rx_free().
void t4_rx_set_dcs | ( | t4_state_t * | s, | |
const char * | dcs | |||
) |
Set the DCS information of the fax, for inclusion in the file.
s | The T.4 context. | |
dcs | The DCS information, formatted as an ASCII string. |
void t4_rx_set_far_ident | ( | t4_state_t * | s, | |
const char * | ident | |||
) |
Set the identity of the remote machine, for inclusion in the file.
s | The T.4 context. | |
ident | The identity string. |
void t4_rx_set_image_width | ( | t4_state_t * | s, | |
int | width | |||
) |
Set the expected width of the received image, in pixel columns.
s | The T.4 context. | |
width | The number of pixels across the image. |
void t4_rx_set_model | ( | t4_state_t * | s, | |
const char * | model | |||
) |
Set the model of the remote machine, for inclusion in the file.
s | The T.4 context. | |
model | The model string, or NULL. |
int t4_rx_set_row_write_handler | ( | t4_state_t * | s, | |
t4_row_write_handler_t | handler, | |||
void * | user_data | |||
) |
Set the row write handler for a T.4 receive context.
s | The T.4 receive context. | |
handler | A pointer to the handler routine. | |
user_data | An opaque pointer passed to the handler routine. |
void t4_rx_set_rx_encoding | ( | t4_state_t * | s, | |
int | encoding | |||
) |
Set the encoding for the received data.
s | The T.4 context. | |
encoding | The encoding. |
void t4_rx_set_sub_address | ( | t4_state_t * | s, | |
const char * | sub_address | |||
) |
Set the sub-address of the fax, for inclusion in the file.
s | The T.4 context. | |
sub_address | The sub-address string. |
void t4_rx_set_vendor | ( | t4_state_t * | s, | |
const char * | vendor | |||
) |
Set the vendor of the remote machine, for inclusion in the file.
s | The T.4 context. | |
vendor | The vendor string, or NULL. |
void t4_rx_set_x_resolution | ( | t4_state_t * | s, | |
int | resolution | |||
) |
Set the column-to-column (x) resolution to expect for a received image.
s | The T.4 context. | |
resolution | The resolution, in pixels per metre. |
void t4_rx_set_y_resolution | ( | t4_state_t * | s, | |
int | resolution | |||
) |
Set the row-to-row (y) resolution to expect for a received image.
s | The T.4 context. | |
resolution | The resolution, in pixels per metre. |
int t4_rx_start_page | ( | t4_state_t * | s | ) |
Prepare to receive the next page of the current document.
s | The T.4 context. |
References span_log(), and T4_COMPRESSION_ITU_T6.