AOI_Screener Class Reference

Screener / halftoning. More...

Public Member Functions
	AOI_Screener (const char *screenerType)
void	PageStart (uint32_t channelCnt, uint32_t width, uint32_t height, uint32_t levels, const float *dotWeights, const uint16_t *linCurve)
void	PageEnd ()
void	ProcessLine (const void *inLine, void *outLine)

Detailed Description

Screener / halftoning.

See also

AOI_Renderer, AOI_WriteTIFF

The screener converts the contone output from the renderer to halftoned data (screens).

Definition at line 10 of file AOI_Screener.h.

Constructor & Destructor Documentation

AOI_Screener()

AOI_Screener::AOI_Screener

(

const char *

screenerType

)

Constructor of a screener of the given screenerType. Possible screeners are:

• CED

The access to the screeners is limited by the license.

Parameters

screenerType

Name of the screener to use.

Definition at line 1306 of file AOI_Screener.cpp.

Member Function Documentation

PageEnd()

void AOI_Screener::PageEnd

(

)

Ends the page and flushes all output.

See also

PageStart, ProcessLine

Definition at line 1351 of file AOI_Screener.cpp.

PageStart()

void AOI_Screener::PageStart	(	uint32_t	channelCnt,
		uint32_t	width,
		uint32_t	height,
		uint32_t	levels,
		const float *	dotWeights,
		const uint16_t *	linCurve )

Starts a page for the screener. The PageStart must be called before any calls to ProcessLine are valid. This call must be paired with PageEnd.

Parameters

channelCnt	Number of channels/inks in the contone image data.
width	Width of the image data in pixels.
height	Height of the image data in pixels.
levels	The number of output levels including 0. The number of levels dictate the number of bits used in the output. 2 level : 1 bit 3-4 level : 2 bits 5-16 level : 4 bits 16-64 level : 8 bits
dotWeights	Relative weights of the dots normalized to 1, including the weight of level 0 which must be 0.
linCurve	16 bits linearization curve. 256 entries.

See also

PageStart, PageEnd, ProcessLine

Definition at line 1336 of file AOI_Screener.cpp.

ProcessLine()

void AOI_Screener::ProcessLine	(	const void *	inLine,
		void *	outLine )

Provide 1 plane of contone data to the screener and receive the screened plane back. The feeding sequence of the data must be respected and goes from 0 to channelCount. Also empty channels must be fed to this method.

Parameters

inLine	Pointer to the contone data of width defined by PageStart.
outLine	Pointer to memory that receives the screened data.

See also

PageStart, PageEnd

Definition at line 1366 of file AOI_Screener.cpp.

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The documentation for this class was generated from the following files:

• C:/Environments/desktop/Source/PDFEngine/OpenAPI/AOI_Screener.h
• C:/Environments/desktop/Source/PDFEngine/OpenAPI/AOI_Screener.cpp