t4_tx_state_s Struct Reference

#include <t4_tx.h>

List of all members.

Public Attributes
t4_row_read_handler_t	row_handler
	Callback function to read a row of pixels from the image source.
void *	row_handler_user_data
	Opaque pointer passed to row_read_handler.
int	line_encoding
	The type of compression used between the FAX machines.
int	line_encoding_bilevel
int	line_encoding_gray
int	line_encoding_colour
int	row_squashing_ratio
	When superfine and fine resolution images need to be squahed vertically to a lower resolution, this value sets the number of source rows which must be squashed to form each row on the wire.
uint32_t	image_width
	The width of the current page, in pixels.
uint32_t	image_length
	The length of the current page, in pixels.
int	line_image_size
	The size of the compressed image on the line side, in bits.
int	start_page
	The first page to transfer. -1 to start at the beginning of the file.
int	stop_page
	The last page to transfer. -1 to continue to the end of the file.
int	header_overlays_image
	TRUE for FAX page headers to overlay (i.e. replace) the beginning of the page image. FALSE for FAX page headers to add to the overall length of the page.
const char *	header_info
	The text which will be used in FAX page header. No text results in no header line.
const char *	local_ident
	The local ident string. This is used with header_info to form a page header line.
int	current_page
	The page number of current page. The first page is zero. If FAX page headers are used, the page number in the header will be one more than this value (i.e. they start from 1).
char *	header_text
	The composed text of the FAX page header, if there is one.
tz_t *	tz
	Optional per instance time zone for the FAX page header timestamp.
int	header_row
	Row counter for playing out the rows of the header line.
union {
t4_t6_encode_state_t   t4_t6
t42_encode_state_t   t42
t85_encode_state_t   t85
}	encoder
image_translate_state_t	translator
int	apply_lab
lab_params_t	lab_params
uint8_t *	colour_map
int	colour_map_entries
t4_tx_metadata_t	metadata
t4_tx_tiff_state_t	tiff
	All TIFF file specific state information for the T.4 context.
logging_state_t	logging
	Error and flow logging control.

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Detailed Description

T.4 FAX compression descriptor. This defines the working state for a single instance of a T.4 FAX compression channel.

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

• private/t4_tx.h