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jogamp.opengl.util.pngj

pack-priv Class FilterWriteStrategy

Class Inheritance

extends Object

java.lang.Object
jogamp.opengl.util.pngj.FilterWriteStrategy

Manages the writer strategy for selecting the internal png predictor filter

Field Summary

Modifier and Type	Field and Description
private static final int	COMPUTE_STATS_EVERY_N_LINES
public final FilterType	configuredType
private FilterType	currentType
private int	discoverEachLines
private final double[]	histogram1
pack-priv final ImageInfo	imgInfo
private final double[]	lastEntropies
private int	lastRowTested
private final double[]	lastSums
private double[]	preference

Constructor Summary

Access	Constructor and Description
pack-priv	FilterWriteStrategy(final ImageInfo imgInfo, final FilterType configuredType)

Method Summary

Modifier and Type	Method and Description
public boolean	computesStatistics()
pack-priv void	fillResultsForFilter(final int rown, final FilterType type, final double sum, final int[] histo, final boolean tentative)
pack-priv FilterType	gimmeFilterType(final int rown, final boolean useEntropy)
public void	setPreference(final double none, final double sub, final double up, final double ave, final double paeth)
pack-priv boolean	shouldTestAll(final int rown)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

COMPUTE_STATS_EVERY_N_LINES	back to summary
private static final int COMPUTE_STATS_EVERY_N_LINES

configuredType	back to summary
public final FilterType configuredType

currentType	back to summary
private FilterType currentType

discoverEachLines	back to summary
private int discoverEachLines

histogram1	back to summary
private final double[] histogram1

imgInfo	back to summary
pack-priv final ImageInfo imgInfo

lastEntropies	back to summary
private final double[] lastEntropies

lastRowTested	back to summary
private int lastRowTested

lastSums	back to summary
private final double[] lastSums

preference	back to summary
private double[] preference

Constructor Detail

FilterWriteStrategy	back to summary
pack-priv FilterWriteStrategy(final ImageInfo imgInfo, final FilterType configuredType)

Method Detail

computesStatistics	back to summary
public boolean computesStatistics()

fillResultsForFilter	back to summary
pack-priv void fillResultsForFilter(final int rown, final FilterType type, final double sum, final int[] histo, final boolean tentative)

gimmeFilterType	back to summary
pack-priv FilterType gimmeFilterType(final int rown, final boolean useEntropy)

setPreference	back to summary
public void setPreference(final double none, final double sub, final double up, final double ave, final double paeth)

shouldTestAll	back to summary
pack-priv boolean shouldTestAll(final int rown)