spandsp  3.0.0
t4_tx_metadata_t Struct Reference

#include <t4_tx.h>

Public Attributes

int compression
 The type of compression used on the wire.
 
int image_type
 Image type - bi-level, gray, colour, etc.
 
int width_code
 The width code for the image on the line side.
 
uint32_t image_width
 The width of the current page on the wire, in pixels.
 
uint32_t image_length
 The length of the current page on the wire, in pixels.
 
int x_resolution
 Column-to-column (X) resolution in pixels per metre on the wire.
 
int y_resolution
 Row-to-row (Y) resolution in pixels per metre on the wire.
 
int resolution_code
 Code for the combined X and Y resolution on the wire.
 

Detailed Description

T.4 FAX compression metadata descriptor. This contains information about the image which may be relevant to the backend, but is not generally relevant to the image encoding process. The exception here is the y-resolution, which is used in T.4 2-D encoding for non-ECM applications, to optimise the balance of density and robustness.


The documentation for this struct was generated from the following file: