Collection of macros and functions shared by all QLxxx printer drivers. More...

Data Structures
struct	halftone_converter
	Halftone converter run-time data. More...

struct	ql_trim
	Trim the input raster to the available media. More...

struct	ql_job
	Collected data for the current job to process. More...

struct	ql_drv
	The main QL driver instance description. More...

struct	dk_roll_types
	QL printers roll types. More...

struct	ql_simple_command
	A simple QL printer command declaration. More...

Macros
#define	caps_print_debug(fmt, ...)

#define	ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))

#define	DOTS_TO_BYTES(x) ((x + 7U) / 8U)

#define	DOTS_TO_WORDS(x) ((x + 15U) / 16U)

#define	BIT(x) (1 << (x))

#define	_(string) (string)

#define	NLS_(string) (string)

#define	COLOUR_VAL_DARK 0x00

#define	COLOUR_VAL_BRIGHT 0xff

#define	PRINT_DOT_VAL 0x00

#define	DEFAULT_QL_LINE_SIZE 90

#define	QL_MEDIA_TYPE_CONTINUOUS 0xa

#define	QL_MEDIA_TYPE_DIE_CUT 0xb

#define	QL_QUALITY_PRINT 0x40 /* never use while bi-colour printing (according to the datasheet) */

#define	QL_FAST_PRINT 0x00 /* always use with bi-colour printing (according to the datasheet) */

#define	QL_MAX_SELECTIONS 10

#define	QL_FIRST_PAGE 1

#define	QL_NEXT_PAGE 0

Typedefs
typedef unsigned char	conv_type

Enumerations
enum	ql_half_tone { QL_UNKNOWN = 0 , QL_NONE = 1 , QL_ORDERED = 2 , QL_ERROR_DIFFUSION = 4 }

enum	dk_caps { DK_CAP_UNKNOWN = 0 , DK_CAP_CONTINUOUS = 1 , DK_CAP_DIE_CUT = 2 , DK_CAP_RED = 4 }

Functions
static struct ql_drv *	to_ql_drv (void *d)

void	sliding_halftone_get (struct halftone_converter *cnv)

void	sliding_halftone_put (struct halftone_converter *cnv)

void	halftone_line_no_dither (struct halftone_converter *cnv)

void	halftone_line_ordered (struct halftone_converter *cnv)

void	halftone_line_with_error_diffusion (struct halftone_converter *cnv)

void	move_in_next_line (struct halftone_converter *cnv, const struct caps_dot_grey raw[cnv->pixel_count])

void	move_in_empty_line (struct halftone_converter *cnv, conv_type val)

int	ql_dk_information_get (struct dk_roll_types medium, const char name)

int	ql_reset (struct ql_drv *t) __wur

int	ql_page_print (struct ql_drv *t) __wur

int	ql_last_page_print (struct ql_drv *t) __wur

int	ql_invalidate_and_initialize (struct ql_drv *t) __wur

int	ql_status_request (struct ql_drv *t, unsigned char buffer[32]) __wur

void	ql_driver_halftone_selection_setup (struct ql_drv t, struct caps_ppd_base base)

void	ql_driver_power_selection_setup (struct ql_drv t, struct caps_ppd_base base)

void	ql_driver_bi_colour_medium_selection_setup (struct ql_drv t, struct caps_ppd_base base)

void	ql_driver_base_setup (struct ql_drv *t)

int	ql_numerical_setting_read (struct ql_drv t, const char section, const char *keyword)

int	ql_job_header_generate (struct ql_drv *t)

int	ql_driver_send (struct ql_drv t, size_t count, const void data, int flush) __wur

int	ql_driver_data_send (struct ql_drv t, size_t count, const void data, int flush) __wur

void	ql_driver_raster_crop (struct ql_drv *t)

int	ql_page_header_generate (struct ql_drv *t, int first_page) __wur

int	ql_auto_powerdown (struct ql_drv *t, unsigned short time_out) __wur

int	ql_auto_powerup (struct ql_drv *t, unsigned short mode) __wur

static void	transform_to_monochrome (size_t input_cnt, const conv_type input[input_cnt], unsigned char *data)

static unsigned	pts_to_pixel (double pts, unsigned resolution)

static unsigned	mm_to_pixel (unsigned mm, unsigned resolution)

static double	pts_to_mm (double pts)

static double	mm_to_pts (double mm)

static double	pixel_to_mm (unsigned pixel, unsigned resolution)

enum ql_half_tone	ql_driver_job_halftone_get (struct ql_drv *t)

void	ql_driver_job_bi_colour_medium_get (struct ql_drv *t)

int	ql_monochome_page_print (struct ql_drv *t)

Detailed Description

Copyright: GNU General Public License 2 or later

Author: Jürgen Borleis

Warning: Use as experimental

Macro Definition Documentation

◆ caps_print_debug

#define caps_print_debug	(	fmt,
		...
	)

◆ ARRAY_SIZE

#define ARRAY_SIZE ( x ) (sizeof(x)/sizeof(x[0]))

always useful

◆ DOTS_TO_BYTES

#define DOTS_TO_BYTES ( x ) ((x + 7U) / 8U)

Convert an amount of (monochrome) dots into its corresponding amount of bytes and round up

◆ DOTS_TO_WORDS

#define DOTS_TO_WORDS ( x ) ((x + 15U) / 16U)

Convert an amount of (monochrome) dots into its corresponding amount of shorts and round up

◆ BIT

#define BIT ( x ) (1 << (x))

Just a little helper to write more readable code

◆ _

#define _ ( string ) (string)

◆ NLS_

#define NLS_ ( string ) (string)

◆ COLOUR_VAL_DARK

#define COLOUR_VAL_DARK 0x00

Value of black. The minimal value of a byte

◆ COLOUR_VAL_BRIGHT

#define COLOUR_VAL_BRIGHT 0xff

Value of white. The maximal value of a byte

◆ PRINT_DOT_VAL

#define PRINT_DOT_VAL 0x00

The value of a to be printed dot

◆ DEFAULT_QL_LINE_SIZE

#define DEFAULT_QL_LINE_SIZE 90

The generic count of bytes of one line of these QL printers

Note: This is valid only for a couple types of these printers. It should be set in the PPD instead.

◆ QL_MEDIA_TYPE_CONTINUOUS

#define QL_MEDIA_TYPE_CONTINUOUS 0xa

◆ QL_MEDIA_TYPE_DIE_CUT

#define QL_MEDIA_TYPE_DIE_CUT 0xb

◆ QL_QUALITY_PRINT

#define QL_QUALITY_PRINT 0x40 /* never use while bi-colour printing (according to the datasheet) */

◆ QL_FAST_PRINT

#define QL_FAST_PRINT 0x00 /* always use with bi-colour printing (according to the datasheet) */

◆ QL_MAX_SELECTIONS

#define QL_MAX_SELECTIONS 10

This is just a short-cut to simplify the addition of selections to the printer description

It is used to reserve a static selection table, which can be extended on demand at run-time.

◆ QL_FIRST_PAGE

#define QL_FIRST_PAGE 1

Used in ql_page_header_generate() to mark the first page in a print job

◆ QL_NEXT_PAGE

#define QL_NEXT_PAGE 0

Used in ql_page_header_generate() to mark the the next page in a print job (in contrast to the QL_FIRST_PAGE)

Typedef Documentation

◆ conv_type

typedef unsigned char conv_type

Enumeration Type Documentation

◆ ql_half_tone

enum ql_half_tone

Half tone method to be used for the raster

Enumerator
QL_UNKNOWN	not defined, or use some kind of default (let the user select one)
QL_NONE	Don't use any kind of half tone method
QL_ORDERED	Use an ordered half tone method
QL_ERROR_DIFFUSION	Use the error diffusion half tone method (Floyd-Steinberg)

◆ dk_caps

enum dk_caps

Enumerator
DK_CAP_UNKNOWN
DK_CAP_CONTINUOUS
DK_CAP_DIE_CUT
DK_CAP_RED	additionally red colour possible

Function Documentation

◆ to_ql_drv()

static struct ql_drv * to_ql_drv ( void * d )

inlinestatic

Convert the anonymous pointer from the libcapsdriver into our information collection

Parameters

[in] d Anonymous structure pointer

Returns: Pointer to our struct ql_drv

◆ sliding_halftone_get()

void sliding_halftone_get ( struct halftone_converter * cnv )

Prepare the sliding line buffers

Parameters

[in,out] cnv The converter structure to initialiaize

In order to run some kind of dithering we need signed values per pixel which must be larger than the incoming pixels data. Incoming pixels are of type 'unsigned char' with their grey values. Due to this conversion we do not need to honor any kind of saturation while calculating the dithered output.

Note: Does not return in case of memory failure

Precondition: halftone_converter::pixel_count must be already set and not '0'

◆ sliding_halftone_put()

void sliding_halftone_put ( struct halftone_converter * cnv )

Clean up image processing via sliding line buffers

Parameters

[in,out] cnv The converter structure to destroy

◆ halftone_line_no_dither()

void halftone_line_no_dither ( struct halftone_converter * cnv )

Quantize the top line without any half tone algorithm

Parameters

[in,out] cnv The converter structure to use

http://www.visgraf.impa.br/Courses/ip00/proj/Dithering1/average_dithering.html

◆ halftone_line_ordered()

void halftone_line_ordered ( struct halftone_converter * cnv )

Quantize the top line according to an "ordered dithering matrix"

Parameters

[in,out] cnv The converter structure to use

This is a simple algorithm with a 2x2 "ordered dithering matrix":

   | 1/10  3/10 | <-- cnv->sliding_lines[0]
   | 4/10  2/10 | <-- cnv->sliding_lines[1]

http://www.visgraf.impa.br/Courses/ip00/proj/Dithering1/ordered_dithering.html

Precondition: halftone_converter::sliding_lines[0] and halftone_converter::sliding_lines[1] must be valid

◆ halftone_line_with_error_diffusion()

void halftone_line_with_error_diffusion ( struct halftone_converter * cnv )

Quantize the top line according to the "Floyd-Steinberg error diffusion" and distribute the error around

Parameters

[in,out] cnv The converter structure to use

From: http://www.visgraf.impa.br/Courses/ip00/proj/Dithering1/floyd_steinberg_dithering.html

   |  N     *   7/16 | <-- cnv->sliding_lines[0]
   | 3/16  5/16 1/16 | <-- cnv->sliding_lines[1]

N previous pixel, * current pixel to process (e.g. X/Y position)

Precondition: halftone_converter::sliding_lines[0] and halftone_converter::sliding_lines[1] must be valid; At least three pixels must be in the lines

◆ move_in_next_line()

void move_in_next_line	(	struct halftone_converter *	cnv,
		const struct caps_dot_grey	raw[cnv->pixel_count]
	)

Move in the next line with raw raster data into the process

Parameters

[in,out]	cnv	The converter structure to destroy
[in]	raw	Buffer with raw pixel data (grey scale) in bytes

Throw away the content of the current top line, move all lines below one line up and fill the bottom line with new content from the given raw line.

Currently there are only two lines in the calculation buffer, so "moving" means "swapping" instead.

The byte based pixel data is copied into the sliding half tone structure and gets converted to signed short to be able run the half tone algorithm afterwards.

Note: In order to be able to calculate the bottom line of the image, you need to input an empty line instead. Empty means: it must contain a value, which isn't printed. Refer move_in_empty_line() for details

Precondition: raw must point to a buffer with halftone_converter::pixel_count bytes.

◆ move_in_empty_line()

void move_in_empty_line	(	struct halftone_converter *	cnv,
		conv_type	val
	)

Move in an empty line into the process

Parameters

[in,out]	cnv	The converter structure to use
[in]	val	'Empty' value (0…255)

'Empty' means val must have a value which should not print anything. For example COLOUR_VAL_BRIGHT.

◆ ql_dk_information_get()

int ql_dk_information_get	(	struct dk_roll_types *	medium,
		const char *	name
	)

Retrieve settings/information about a specific DK roll/cassette

Parameters

[out]	medium	The settings for the DK roll named by name
[in]	name	The DK roll name the settings should be retrieved for

Return values

0	On success, *medium is valid
-EINVAL	Roll with the given `name` not found

DK rolls can inherit settings from other rolls. This routine walks through the table and uses the dk_roll_types::like member to re-use their settings.

◆ ql_reset()

int ql_reset ( struct ql_drv * t )

Initialize/reset the printer

Parameters

[in] t Full job description

Return values

0	On success
Negative	Error code from the ql_driver_data_send() call

This command can also be used every time to terminate a current print

Note: To be sent once at the beginning of a print job (according to the manual)

◆ ql_page_print()

int ql_page_print ( struct ql_drv * t )

Finish the current page

Parameters

[in] t Full job description

Return values

0	On success
Negative	Error code from the ql_driver_data_send() call

This code is to be sent after a page.

It seems, this command is only to be sent, if more than one page in one job should be printed. If the job contains only one page, the ql_last_page_print() is enough to do the right thing.

Note: To be sent at the end of a page's raster, if it isn't the last page to be print (according to the manual)

◆ ql_last_page_print()

int ql_last_page_print ( struct ql_drv * t )

Finish the current print job

Parameters

[in] t Full job description

Return values

0	On success
Negative	Error code from the ql_driver_data_send() call

This code is to be sent after the last page to finish the whole print job.

Note: To be sent at the end of a page's raster, if it is the last page of the job (according to the manual)

◆ ql_invalidate_and_initialize()

int ql_invalidate_and_initialize ( struct ql_drv * t )

Start a new print job from the printer's point of view

Parameters

[in] t Full job description

Return values

0	On success
Negative	Error code from the ql_driver_data_send() call

To be sent at the beginning of a new print job or if the current processing has to be stopped at the printer's side.

From the datasheet: "If data transmission is to be stopped midway, send the “initialize” command after sending the “invalidate” command for the appropriate number of bytes to return to the receiving state, where the print buffer is cleared."

Note: invalidate means the specified amount of zero bytes; initialize means the *ESC,@* command in ql_reset(); To be sent once at the beginning of a print job (according to the manual)

◆ ql_status_request()

int ql_status_request	(	struct ql_drv *	t,
		unsigned char	buffer[32]
	)

Request and read status from printer.

Parameters

[in]	t	Full job description
[out]	buffer	Storage for the 32 status bytes read from the printer

Return values

0	Status read successfully
-ENODATA	No status information from the printer. `buffer` content is invalid
-ENODEV	If the printer is gone in the meanwhile. This is serious!
-errno	All error values from ql_driver_data_send(). They are serious!

Some run-time experiences:

the printer reports always the inserted cassette, even if the cover is opened (QL800 tested)
if no cassette is inserted, it returns 0x00 as the 'media_type' and width and length as 0.
whenever an error occur, the report is marked as an error report (field 'status_type')
if the cover is closed but whithout an inserted cassette the report isn't marked as an error report
it seems, the 'automatic status notification mode' works differently. At my side it didn't work at all

Precondition: Printer must be idle

◆ ql_driver_halftone_selection_setup()

void ql_driver_halftone_selection_setup	(	struct ql_drv *	t,
		struct caps_ppd_base *	base
	)

Add the power feature control selections to the printer description based on INI settings

Parameters

[in]	t	Full job description
[in,out]	base	Add selections to this printer description on demand

◆ ql_driver_power_selection_setup()

void ql_driver_power_selection_setup	(	struct ql_drv *	t,
		struct caps_ppd_base *	base
	)

Add the power feature control selections to the printer description based on INI settings

Parameters

[in]	t	Full job description
[in,out]	base	Add selections to this printer description on demand

Uses the INI boolean key powerctl in section [features] to setup a possible power setting of the printer. In this case, selections defining these features will be added to the printer description PPD.

◆ ql_driver_bi_colour_medium_selection_setup()

void ql_driver_bi_colour_medium_selection_setup	(	struct ql_drv *	t,
		struct caps_ppd_base *	base
	)

Add bi-colour medium selection to the printer description based on INI settings

Parameters

[in]	t	Full job description
[in,out]	base	Add selections to this printer description on demand

The bi-colour capability of the loaded cassette cannot be detected. It must be selected by the user. This function adds a corresponding selection to the printer description, if the printer has bi-colour capabilities.

Precondition: Printer's colour capabilities must be already set (by calling ql_driver_colour_from_INI() first)

◆ ql_driver_base_setup()

void ql_driver_base_setup ( struct ql_drv * t )

Read in the main INI file settings for the driver

Parameters

[in] t Full job description

◆ ql_numerical_setting_read()

int ql_numerical_setting_read	(	struct ql_drv *	t,
		const char *	section,
		const char *	keyword
	)

Helper to read in a positive integer INI setting

Parameters

[in,out]	t	Full job description
[in]	section	Name of the section, the setting should be read from
[in]	keyword	The keyword/setting to read in

Return values

Positive	The setting read from the INI
-ENODATA	No setting found
-EINVAL	Setting found, but doesn't look like an ASCII number
-ERANGE	Setting contains an invalid number for an 'int'

◆ ql_job_header_generate()

int ql_job_header_generate ( struct ql_drv * t )

Send the heading commands to setup the printer prior a print job

Parameters

[in] t Full job description

Called once per print job at the beginning

◆ ql_driver_send()

int ql_driver_send	(	struct ql_drv *	t,
		size_t	count,
		const void *	data,
		int	flush
	)

Send some data to the printer's stream

Parameters

[in,out]	t	Full job description
[in]	count	Count of bytes `data` points to
[in]	data	Pointer to the to be sent data
[in]	flush	'1' if the stream should be flushed

Return values

0	Data buffered (and send, if `flush` is nonzero)
-EINVAL	Printer device is unsuitable for writing
-EBADF	Really bad internal failure
-EFAULT	Really bad internal failure made by the caller
-EIO	Low-level I/O error

Note: It seems to me, if this call returns with an error code the data wasn't sent.

◆ ql_driver_data_send()

int ql_driver_data_send	(	struct ql_drv *	t,
		size_t	count,
		const void *	data,
		int	flush
	)

Send some data to the printer's stream or the development/debugging file

Parameters

[in,out]	t	Full job description
[in]	count	Count of bytes `data` points to
[in]	data	Pointer to the to be sent data
[in]	flush	'1' if the stream should be flushed

Return values

0	Data buffered (and send, if `flush` is nonzero)
-EINVAL	Printer device is unsuitable for writing
-EBADF	Really bad internal failure
-EFAULT	Really bad internal failure made by the caller
-EIO	Low-level I/O error

This sends the real printer data to the printer's stream like ql_driver_send() does, but of the debug option –writeto is in use, it writes it to the file instead.

This is for debugging/development purposes, to extract the generated wire data and check its content and format. It is required this way, since the driver depends on interactive data exchange with the printer and if something went wrong, there is no other easy to use chance to see the data in this case.

Todo:: Write a printer emulator instead.

◆ ql_driver_raster_crop()

void ql_driver_raster_crop ( struct ql_drv * t )

Crop the input raster to meet the printer's expectations/requirements

Parameters

[in] t Full job description

The printer device has some - hmm, lets it call - interesting requirements about the print data it accepts. Continuous labels are easy, but pre-cut labels aren't. In order to ensure the printer always cuts inbetween two pre-cut labels, we need to tweak the amount of lines to be print.

Read how_the_driver_deals_with_margins about details.

◆ ql_page_header_generate()

int ql_page_header_generate	(	struct ql_drv *	t,
		int	first_page
	)

Parameters

[in]	t	Full job description
[in]	first_page	QL_FIRST_PAGE if it is the page header for the first page, QL_NEXT_PAGE else

Return values

0	On success
-ENODEV	Device seems gone (e.g. channel to the next stage is gone)

Called once per page at the beginning

Note: In case of -ENODEV it makes no sense trying to send any further data or commands

Precondition: The ql_job::trim member must be up to date, e.g. its content matches the current raster page header

Todo:

Deal with QL_FAST_PRINT/QL_QUALITY_PRINT for monochrome use case

Do the QL_QUALITY_PRINT and QL_HIGH_RESOLUTION bits depend on each other?

Deal with auto cut setting and when to cut (and if the printer has a cutter). To make it simple: only "cut at end" and "cut each" should be supported

◆ ql_auto_powerdown()

int ql_auto_powerdown	(	struct ql_drv *	t,
		unsigned short	time_out
	)

Set the printer's auto power down behaviour if it is idle

Parameters

[in]	t	Full job description
[in]	time_out	Time out when idle to enter power down mode

time_out can be:

0x0000: disable auto power off
0x0001: auto power off after 10 minutes
0x0002: auto power off after 20 minutes
0x0003: auto power off after 30 minutes
0x0004: auto power off after 40 minutes
0x0005: auto power off after 50 minutes
0x0006: auto power off after 60 minutes

If the printer enters the power off mode, it disconnects itself from the USB and can be re-enabled only manually with its local power button. This is a really bad idea for remotly used printers.

Note: This command is reverse-engineered, it isn't listed in the programming manual; The big endian format for the subcommand's data (here time_val) is guessed only. All other printer commands use little endian for multibyte parameter. So, the command's data might have a different format/content than listed here

◆ ql_auto_powerup()

int ql_auto_powerup	(	struct ql_drv *	t,
		unsigned short	mode
	)

Set the printer's power up behaviour when connecting to external power

Parameters

[in]	t	Full job description
[in]	mode	Power On mode

mode can be:

0x0000 Keep offline when connecting to external power
0x0001 Go online when connecting to external power

Note: This command is reverse-engineered, it isn't listed in the programming manual; The big endian format for the subcommand's data (here mode) is guessed only. All other commands use little endian for multibyte parameter. So, the command's data might have a different format/content than listed here

◆ transform_to_monochrome()

static void transform_to_monochrome	(	size_t	input_cnt,
		const conv_type	input[input_cnt],
		unsigned char *	data
	)

inlinestatic

Convert an array of signed shorts into a monochrome pattern (one conv_type into one bit)

Parameters

[in]	input_cnt	Count of pixel in `input`
[in]	input	Where to get the quantized input data from
[out]	data	Where to store the converted monochrome output data to

Let the compiler optimize it when used.

Note: Since the printer prints from right to left, the input pattern gets mirrored(!) here. First pixel printed (at the right border) is the MSB of the first byte

Precondition: PRINT_DOT_VAL means: print a dot, everything else means: do not print a dot, e.g. the input data must already be quantized; input and data must point to different memories (no overlap, no side effects); input_cnt must be a multiple of 8

◆ pts_to_pixel()

static unsigned pts_to_pixel	(	double	pts,
		unsigned	resolution
	)

inlinestatic

Convert Postscript [pts] (1/72 inch) to [dots] at the given resolution

Parameters

[in]	pts	Postscript Points to convert
[in]	resolution	Dots Per Inch (DPI)

Returns: Dot count

◆ mm_to_pixel()

static unsigned mm_to_pixel	(	unsigned	mm,
		unsigned	resolution
	)

inlinestatic

Convert millimeter [mm] to [dots] at the given resolution

Parameters

[in]	mm	Millimeter to convert
[in]	resolution	Dots Per Inch (DPI)

Returns: Dot count

◆ pts_to_mm()

static double pts_to_mm ( double pts )

inlinestatic

Convert Postscript [pts] (1/72 inch) to [mm]

Parameters

[in] pts Postscript Points to convert

Returns: Value in [mm]

◆ mm_to_pts()

static double mm_to_pts ( double mm )

inlinestatic

Convert millimeter [mm] to points [pts]

Parameters

[in] mm Millimeter to convert

Returns: Length in [pts]

◆ pixel_to_mm()

static double pixel_to_mm	(	unsigned	pixel,
		unsigned	resolution
	)

inlinestatic

Convert an amount of pixel at a specific resolution into [millimeter]

Parameters

[in]	pixel	Pixel count to convert
[in]	resolution	Dots Per Inch (DPI)

Returns: Value in [mm]

◆ ql_driver_job_halftone_get()

enum ql_half_tone ql_driver_job_halftone_get ( struct ql_drv * t )

FIXME

◆ ql_driver_job_bi_colour_medium_get()

void ql_driver_job_bi_colour_medium_get ( struct ql_drv * t )

Get the current job related selection for the bi-colour medium capabilities

Parameters

[in] t Full job description

The bi-colour capability cannot be detected at runtime. So the user mus select it on a per job base to enable bi-colour print. This function checks the current selection and modifies ql_drv::bi_colour_medium_present accordingly.

◆ ql_monochome_page_print()

int ql_monochome_page_print ( struct ql_drv * t )

Convert the current page into the printer's wire data format

Parameters

[in] t Full job description

Return values

0	On success
-EINVAL	Unsupported raster input format
-ECANCELED	Termination request from outerspace

The routine loops through all lines of the current page and converts them into the printer's monochrome wire format

Note: The ql_trim::top_keep amount of lines of the input raster is printed.; In case of an error or a termination request, the print job gets terminated at the printer's side as well.

Precondition: The format was already checked, e.g. it fits into the printer's media.

Data Structures

Macros

Typedefs

Enumerations

Functions

Detailed Description

Macro Definition Documentation

◆ caps_print_debug

◆ ARRAY_SIZE

◆ DOTS_TO_BYTES

◆ DOTS_TO_WORDS

◆ BIT

◆ _

◆ NLS_

◆ COLOUR_VAL_DARK

◆ COLOUR_VAL_BRIGHT

◆ PRINT_DOT_VAL

◆ DEFAULT_QL_LINE_SIZE

◆ QL_MEDIA_TYPE_CONTINUOUS

◆ QL_MEDIA_TYPE_DIE_CUT

◆ QL_QUALITY_PRINT

◆ QL_FAST_PRINT

◆ QL_MAX_SELECTIONS

◆ QL_FIRST_PAGE

◆ QL_NEXT_PAGE

Typedef Documentation

◆ conv_type

Enumeration Type Documentation

◆ ql_half_tone

◆ dk_caps

Function Documentation

◆ to_ql_drv()

◆ sliding_halftone_get()

◆ sliding_halftone_put()

◆ halftone_line_no_dither()

◆ halftone_line_ordered()

◆ halftone_line_with_error_diffusion()

◆ move_in_next_line()

◆ move_in_empty_line()

◆ ql_dk_information_get()

◆ ql_reset()

◆ ql_page_print()

◆ ql_last_page_print()

◆ ql_invalidate_and_initialize()

◆ ql_status_request()

◆ ql_driver_halftone_selection_setup()

◆ ql_driver_power_selection_setup()

◆ ql_driver_bi_colour_medium_selection_setup()

◆ ql_driver_base_setup()

◆ ql_numerical_setting_read()

◆ ql_job_header_generate()

◆ ql_driver_send()

◆ ql_driver_data_send()

◆ ql_driver_raster_crop()

◆ ql_page_header_generate()

◆ ql_auto_powerdown()

◆ ql_auto_powerup()

◆ transform_to_monochrome()

◆ pts_to_pixel()

◆ mm_to_pixel()

◆ pts_to_mm()

◆ mm_to_pts()

◆ pixel_to_mm()

◆ ql_driver_job_halftone_get()

◆ ql_driver_job_bi_colour_medium_get()

◆ ql_monochome_page_print()