spandsp 0.0.6
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#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 "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"
Macros | |
#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_rx_state_t *s) |
Complete the reception of a page. More... | |
int | t4_rx_put_bit (t4_rx_state_t *s, int bit) |
Put a bit of the current document page. More... | |
int | t4_rx_put_byte (t4_rx_state_t *s, uint8_t byte) |
Put a byte of the current document page. More... | |
int | t4_rx_put_chunk (t4_rx_state_t *s, const uint8_t buf[], int len) |
Put a byte of the current document page. More... | |
int | t4_rx_set_row_write_handler (t4_rx_state_t *s, t4_row_write_handler_t handler, void *user_data) |
Set the row write handler for a T.4 receive context. More... | |
int | t4_rx_start_page (t4_rx_state_t *s) |
Prepare to receive the next page of the current document. More... | |
void | t4_rx_set_rx_encoding (t4_rx_state_t *s, int encoding) |
Set the encoding for the received data. More... | |
void | t4_rx_set_image_width (t4_rx_state_t *s, int width) |
Set the expected width of the received image, in pixel columns. More... | |
void | t4_rx_set_y_resolution (t4_rx_state_t *s, int resolution) |
Set the row-to-row (y) resolution to expect for a received image. More... | |
void | t4_rx_set_x_resolution (t4_rx_state_t *s, int resolution) |
Set the column-to-column (x) resolution to expect for a received image. More... | |
void | t4_rx_set_dcs (t4_rx_state_t *s, const char *dcs) |
Set the DCS information of the fax, for inclusion in the file. More... | |
void | t4_rx_set_sub_address (t4_rx_state_t *s, const char *sub_address) |
Set the sub-address of the fax, for inclusion in the file. More... | |
void | t4_rx_set_far_ident (t4_rx_state_t *s, const char *ident) |
Set the identity of the remote machine, for inclusion in the file. More... | |
void | t4_rx_set_vendor (t4_rx_state_t *s, const char *vendor) |
Set the vendor of the remote machine, for inclusion in the file. More... | |
void | t4_rx_set_model (t4_rx_state_t *s, const char *model) |
Set the model of the remote machine, for inclusion in the file. More... | |
void | t4_rx_get_transfer_statistics (t4_rx_state_t *s, t4_stats_t *t) |
Get the current transfer statistics. More... | |
const char * | t4_encoding_to_str (int encoding) |
Get the short text name of an encoding format. More... | |
t4_rx_state_t * | t4_rx_init (t4_rx_state_t *s, const char *file, int output_encoding) |
Prepare for reception of a document. More... | |
int | t4_rx_release (t4_rx_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. More... | |
int | t4_rx_free (t4_rx_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. More... | |
#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
#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_rx_state_t * | s | ) |
Complete the reception of a page.
s | The T.4 receive context. |
References t4_state_s::bytes_per_row, t4_t6_decode_state_s::curr_bad_row_run, t4_state_s::image_buffer, t4_state_s::image_length, t4_state_s::image_size, t4_state_s::line_encoding, t4_state_s::logging, t4_t6_decode_state_s::longest_bad_row_run, t4_t6_decode_state_s::row_write_handler, t4_t6_decode_state_s::row_write_user_data, span_log(), T4_COMPRESSION_ITU_T6, and t4_rx_put_bit().
int t4_rx_free | ( | t4_rx_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_rx_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. |
References t4_t6_decode_state_s::bad_rows, t4_stats_t::bad_rows, t4_state_s::current_page, t4_stats_t::encoding, t4_state_s::image_length, t4_state_s::image_width, t4_stats_t::length, t4_state_s::line_encoding, t4_state_s::line_image_size, t4_stats_t::line_image_size, t4_t6_decode_state_s::longest_bad_row_run, t4_stats_t::longest_bad_row_run, t4_tiff_state_t::pages_in_file, t4_stats_t::pages_in_file, t4_stats_t::pages_transferred, t4_tiff_state_t::start_page, t4_state_s::tiff, t4_stats_t::width, t4_state_s::x_resolution, t4_stats_t::x_resolution, t4_state_s::y_resolution, and t4_stats_t::y_resolution.
t4_rx_state_t * t4_rx_init | ( | t4_rx_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. |
int t4_rx_put_bit | ( | t4_rx_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_rx_state_t * | s, |
uint8_t | byte | ||
) |
Put a byte of the current document page.
s | The T.4 context. |
byte | The data byte. |
int t4_rx_put_chunk | ( | t4_rx_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. |
int t4_rx_release | ( | t4_rx_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. |
References t4_state_s::rx, t4_state_s::tiff, and t4_tiff_state_t::tiff_file.
Referenced by t4_rx_free().
void t4_rx_set_dcs | ( | t4_rx_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. |
References t4_rx_metadata_t::dcs, and t4_state_s::tiff.
void t4_rx_set_far_ident | ( | t4_rx_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. |
References t4_rx_metadata_t::far_ident, and t4_state_s::tiff.
void t4_rx_set_image_width | ( | t4_rx_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_rx_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_rx_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. |
References t4_t6_decode_state_s::row_write_handler, and t4_t6_decode_state_s::row_write_user_data.
void t4_rx_set_rx_encoding | ( | t4_rx_state_t * | s, |
int | encoding | ||
) |
Set the encoding for the received data.
s | The T.4 context. |
encoding | The encoding. |
References t4_state_s::line_encoding.
void t4_rx_set_sub_address | ( | t4_rx_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. |
References t4_rx_metadata_t::sub_address, and t4_state_s::tiff.
void t4_rx_set_vendor | ( | t4_rx_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. |
References t4_state_s::tiff, and t4_rx_metadata_t::vendor.
void t4_rx_set_x_resolution | ( | t4_rx_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. |
References t4_state_s::x_resolution.
void t4_rx_set_y_resolution | ( | t4_rx_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. |
References t4_state_s::y_resolution.
int t4_rx_start_page | ( | t4_rx_state_t * | s | ) |
Prepare to receive the next page of the current document.
s | The T.4 context. |
References t4_state_s::logging, and span_log().