multilevel_lookup_solution Struct Reference

Distribution solution for a specific number of levels. More...

Data Fields
int32	levels
	The number of levels this solution provides.
uint8	lookup_table [256][256]
	64Kb table providing for fast access to multi-level screen values. More...
int32	refcount
	Reference counting.
struct multilevel_lookup_solution *	next
	Forward chain pointer. More...
struct multilevel_lookup_solution *	prev
	Backward chain pointer.

Detailed Description

Distribution solution for a specific number of levels.

The original implementation of this algorithm used a static pre-calculated distribution table, which only allowed for one single number of tone levels to be in use at any one time. Instead, we use a cache list so that we can co-exist two or more sets of screens using different numbers of tone levels.

This structure holds the distribution solution we have calculated for a specific number of levels.

Field Documentation

lookup_table

uint8 multilevel_lookup_solution::lookup_table[256][256]

64Kb table providing for fast access to multi-level screen values.

The first subscript is the input byte value, the second is the threshold value from the mini-HDS solution.

next

struct multilevel_lookup_solution* multilevel_lookup_solution::next

Forward chain pointer.

Chaining

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

• lib/htmeg/src/htm8ml.c