quantize.c File Reference

#include "magick/studio.h"
#include "magick/artifact.h"
#include "magick/attribute.h"
#include "magick/cache-view.h"
#include "magick/color.h"
#include "magick/color-private.h"
#include "magick/colormap.h"
#include "magick/colorspace.h"
#include "magick/colorspace-private.h"
#include "magick/enhance.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/histogram.h"
#include "magick/image.h"
#include "magick/image-private.h"
#include "magick/list.h"
#include "magick/memory_.h"
#include "magick/monitor.h"
#include "magick/monitor-private.h"
#include "magick/option.h"
#include "magick/pixel-private.h"
#include "magick/quantize.h"
#include "magick/quantum.h"
#include "magick/resource_.h"
#include "magick/string_.h"
#include "magick/string-private.h"
#include "magick/thread-private.h"

Include dependency graph for quantize.c:

Data Structures
struct	_NodeInfo
struct	_Nodes
struct	_CubeInfo
Defines
#define	CacheShift 2
#define	ErrorQueueLength 16
#define	MaxNodes 266817
#define	MaxTreeDepth 8
#define	NodesInAList 1920
#define	AssignImageTag "Assign/Image"
#define	ClassifyImageTag "Classify/Image"
#define	RedShift(pixel) (((pixel) >> CacheShift) << (0*(8-CacheShift)))
#define	GreenShift(pixel) (((pixel) >> CacheShift) << (1*(8-CacheShift)))
#define	BlueShift(pixel) (((pixel) >> CacheShift) << (2*(8-CacheShift)))
#define	AlphaShift(pixel) (((pixel) >> CacheShift) << (3*(8-CacheShift)))
#define	DitherImageTag "Dither/Image"
#define	DitherImageTag "Dither/Image"
#define	PosterizeImageTag "Posterize/Image"
#define	PosterizePixel(pixel)
#define	ReduceImageTag "Reduce/Image"
Typedefs
typedef struct _NodeInfo	NodeInfo
typedef struct _Nodes	Nodes
typedef struct _CubeInfo	CubeInfo
Functions
static CubeInfo *	GetCubeInfo (const QuantizeInfo *, const size_t, const size_t)
static NodeInfo *	GetNodeInfo (CubeInfo , const size_t, const size_t, NodeInfo )
static MagickBooleanType	AssignImageColors (Image , CubeInfo )
static MagickBooleanType	ClassifyImageColors (CubeInfo , const Image , ExceptionInfo *)
static MagickBooleanType	DitherImage (Image , CubeInfo )
static MagickBooleanType	SetGrayscaleImage (Image *)
static size_t	DefineImageColormap (Image , CubeInfo , NodeInfo *)
static void	ClosestColor (const Image , CubeInfo , const NodeInfo *)
static void	DestroyCubeInfo (CubeInfo *)
static void	PruneLevel (CubeInfo , const NodeInfo )
static void	PruneToCubeDepth (CubeInfo , const NodeInfo )
static void	ReduceImageColors (const Image , CubeInfo )
MagickExport QuantizeInfo *	AcquireQuantizeInfo (const ImageInfo *image_info)
static void	AssociateAlphaPixel (const CubeInfo cube_info, const PixelPacket pixel, DoublePixelPacket *alpha_pixel)
static size_t	ColorToNodeId (const CubeInfo cube_info, const DoublePixelPacket pixel, size_t index)
static MagickBooleanType	IsSameColor (const Image image, const PixelPacket p, const PixelPacket *q)
static void	SetAssociatedAlpha (const Image image, CubeInfo cube_info)
MagickExport QuantizeInfo *	CloneQuantizeInfo (const QuantizeInfo *quantize_info)
MagickExport MagickBooleanType	CompressImageColormap (Image *image)
MagickExport QuantizeInfo *	DestroyQuantizeInfo (QuantizeInfo *quantize_info)
static DoublePixelPacket **	DestroyPixelThreadSet (DoublePixelPacket **pixels)
static DoublePixelPacket **	AcquirePixelThreadSet (const size_t count)
static ssize_t	CacheOffset (CubeInfo cube_info, const DoublePixelPacket pixel)
static MagickBooleanType	FloydSteinbergDither (Image image, CubeInfo cube_info)
static MagickBooleanType	RiemersmaDither (Image , CacheView , CubeInfo *, const unsigned int)
static void	Riemersma (Image image, CacheView image_view, CubeInfo *cube_info, const size_t level, const unsigned int direction)
MagickExport MagickBooleanType	GetImageQuantizeError (Image *image)
MagickExport void	GetQuantizeInfo (QuantizeInfo *quantize_info)
static double	MagickRound (double x)
MagickExport MagickBooleanType	PosterizeImage (Image *image, const size_t levels, const MagickBooleanType dither)
MagickExport MagickBooleanType	PosterizeImageChannel (Image *image, const ChannelType channel, const size_t levels, const MagickBooleanType dither)
static void	PruneChild (CubeInfo cube_info, const NodeInfo node_info)
MagickExport MagickBooleanType	QuantizeImage (const QuantizeInfo quantize_info, Image image)
MagickExport MagickBooleanType	QuantizeImages (const QuantizeInfo quantize_info, Image images)
static size_t	QuantizeErrorFlatten (const CubeInfo cube_info, const NodeInfo node_info, const ssize_t offset, MagickRealType *quantize_error)
static void	Reduce (CubeInfo cube_info, const NodeInfo node_info)
static int	MagickRealTypeCompare (const void error_p, const void error_q)
MagickExport MagickBooleanType	RemapImage (const QuantizeInfo quantize_info, Image image, const Image *remap_image)
MagickExport MagickBooleanType	RemapImages (const QuantizeInfo quantize_info, Image images, const Image *remap_image)
static int	IntensityCompare (const void x, const void y)

Define Documentation

#define AlphaShift ( pixel ) (((pixel) >> CacheShift) << (3*(8-CacheShift)))

Referenced by CacheOffset().

#define AssignImageTag "Assign/Image"

Referenced by AssignImageColors(), and QuantizeImages().

#define BlueShift ( pixel ) (((pixel) >> CacheShift) << (2*(8-CacheShift)))

Referenced by CacheOffset().

#define CacheShift 2

Referenced by GetCubeInfo().

#define ClassifyImageTag "Classify/Image"

Referenced by ClassifyImageColors().

#define DitherImageTag "Dither/Image"

Referenced by FloydSteinbergDither(), OrderedPosterizeImageChannel(), and RiemersmaDither().

#define ErrorQueueLength 16

Referenced by DitherImage(), GetCubeInfo(), and RiemersmaDither().

#define GreenShift ( pixel ) (((pixel) >> CacheShift) << (1*(8-CacheShift)))

Referenced by CacheOffset().

#define MaxNodes 266817

Referenced by ClassifyImageColors().

#define MaxTreeDepth 8

#define NodesInAList 1920

#define PosterizeImageTag "Posterize/Image"

Referenced by PosterizeImageChannel().

#define PosterizePixel ( pixel )

Value:

ClampToQuantum((MagickRealType) QuantumRange*( \
  MagickRound(QuantumScale*pixel*(levels-1)))/MagickMax((ssize_t) levels-1,1))

Referenced by PosterizeImageChannel().

#define RedShift ( pixel ) (((pixel) >> CacheShift) << (0*(8-CacheShift)))

Referenced by CacheOffset().

#define ReduceImageTag "Reduce/Image"

Referenced by ReduceImageColors().

Typedef Documentation

typedef struct _CubeInfo CubeInfo

typedef struct _NodeInfo NodeInfo

typedef struct _Nodes Nodes

Function Documentation

static DoublePixelPacket** AcquirePixelThreadSet ( const size_t count ) [static]

References AcquireQuantumMemory(), DestroyPixelThreadSet(), GetMagickResourceLimit(), and ThreadResource.

Referenced by FloydSteinbergDither().

MagickExport QuantizeInfo* AcquireQuantizeInfo ( const ImageInfo * image_info )

References AcquireMagickMemory(), _ImageInfo::dither, _QuantizeInfo::dither, _QuantizeInfo::dither_method, GetImageOption(), GetQuantizeInfo(), MagickDitherOptions, MagickFalse, _QuantizeInfo::measure_error, ParseCommandOption(), ResourceLimitFatalError, ThrowFatalException, and _ImageInfo::verbose.

Referenced by PosterizeImageChannel(), and SetImageType().

static MagickBooleanType AssignImageColors	(	Image *	image,
		CubeInfo *	cube_info
	)			`[static]`

References AcquireAuthenticCacheView(), AcquireImageColormap(), AssignImageTag, _CubeInfo::associate_alpha, AssociateAlphaPixel(), _PixelPacket::blue, _NodeInfo::child, ClosestColor(), _CubeInfo::color_number, _Image::colormap, _Image::colors, _QuantizeInfo::colorspace, _Image::colorspace, ColorToNodeId(), _Image::columns, DefineImageColormap(), DestroyCacheView(), _CubeInfo::distance, _QuantizeInfo::dither, _QuantizeInfo::dither_method, DitherImage(), _Image::exception, _Image::filename, GetCacheViewAuthenticIndexQueue(), GetCacheViewAuthenticPixels(), GetImageQuantizeError(), GetPixelLuma(), GRAYColorspace, _PixelPacket::green, IsSameColor(), IssRGBCompatibleColorspace(), LinearGRAYColorspace, magick_restrict, MagickFalse, MagickTrue, _CubeInfo::maximum_colors, MaxTreeDepth, _QuantizeInfo::measure_error, NoDitherMethod, _QuantizeInfo::number_colors, _PixelPacket::opacity, _NodeInfo::parent, _Image::progress_monitor, PseudoClass, _CubeInfo::quantize_info, QuantumRange, _PixelPacket::red, ResourceLimitError, _CubeInfo::root, _Image::rows, SetImageProgress(), SetPixelIndex, SetPixelOpacity, SetPixelRgb, _Image::storage_class, SyncCacheViewAuthenticPixels(), SyncImage(), _CubeInfo::target, ThrowBinaryImageException, TransformImageColorspace(), _CubeInfo::transparent_index, _CubeInfo::transparent_pixels, and UndefinedColorspace.

Referenced by QuantizeImage(), QuantizeImages(), RemapImage(), and RemapImages().

static void AssociateAlphaPixel	(	const CubeInfo *	cube_info,
		const PixelPacket *	pixel,
		DoublePixelPacket *	alpha_pixel
	)			`[inline, static]`

References _CubeInfo::associate_alpha, _DoublePixelPacket::blue, GetPixelBlue, GetPixelGreen, GetPixelOpacity, GetPixelRed, _DoublePixelPacket::green, _DoublePixelPacket::index, MagickFalse, _DoublePixelPacket::opacity, _PixelPacket::opacity, OpaqueOpacity, QuantumRange, QuantumScale, and _DoublePixelPacket::red.

Referenced by AssignImageColors(), ClassifyImageColors(), FloydSteinbergDither(), and RiemersmaDither().

static ssize_t CacheOffset	(	CubeInfo *	cube_info,
		const DoublePixelPacket *	pixel
	)			`[inline, static]`

References AlphaShift, _CubeInfo::associate_alpha, _DoublePixelPacket::blue, BlueShift, ClampPixel(), _DoublePixelPacket::green, GreenShift, MagickFalse, _DoublePixelPacket::opacity, _DoublePixelPacket::red, RedShift, and ScaleQuantumToChar().

Referenced by FloydSteinbergDither(), and RiemersmaDither().

static MagickBooleanType ClassifyImageColors	(	CubeInfo *	cube_info,
		const Image *	image,
		ExceptionInfo *	exception
	)

References AcquireVirtualCacheView(), _CubeInfo::associate_alpha, AssociateAlphaPixel(), _DoublePixelPacket::blue, _NodeInfo::child, ClampPixel(), ClassifyImageTag, CMYKColorspace, _CubeInfo::colors, _Image::colorspace, _QuantizeInfo::colorspace, ColorToNodeId(), _Image::columns, _CubeInfo::depth, DestroyCacheView(), _Image::filename, GetCacheViewVirtualPixels(), GetMagickModule, GetNodeInfo(), _DoublePixelPacket::green, _DoublePixelPacket::index, IsNaN, IsSameColor(), IssRGBCompatibleColorspace(), magick_restrict, MagickFalse, MagickTrue, _CubeInfo::maximum_colors, MaxNodes, MaxTreeDepth, _CubeInfo::nodes, _NodeInfo::number_unique, _DoublePixelPacket::opacity, OpaqueOpacity, PruneLevel(), PruneToCubeDepth(), _NodeInfo::quantize_error, _CubeInfo::quantize_info, QuantumRange, QuantumScale, _DoublePixelPacket::red, ResourceLimitError, _CubeInfo::root, _Image::rows, SetAssociatedAlpha(), SetImageProgress(), sRGBColorspace, ThrowMagickException(), _NodeInfo::total_color, TransformImageColorspace(), and UndefinedColorspace.

Referenced by QuantizeImage(), QuantizeImages(), RemapImage(), and RemapImages().

MagickExport QuantizeInfo* CloneQuantizeInfo ( const QuantizeInfo * quantize_info )

References AcquireMagickMemory(), _QuantizeInfo::colorspace, _QuantizeInfo::dither, _QuantizeInfo::dither_method, GetQuantizeInfo(), _QuantizeInfo::measure_error, _QuantizeInfo::number_colors, ResourceLimitFatalError, ThrowFatalException, and _QuantizeInfo::tree_depth.

Referenced by GetCubeInfo(), and XGetResourceInfo().

static void ClosestColor	(	const Image *	image,
		CubeInfo *	cube_info,
		const NodeInfo *	node_info
	)			`[static]`

References _CubeInfo::associate_alpha, _NodeInfo::child, _CubeInfo::color_number, _NodeInfo::color_number, _Image::colormap, _CubeInfo::distance, GetPixelAlpha, GetPixelBlue, GetPixelGreen, GetPixelRed, magick_restrict, MagickFalse, _NodeInfo::number_unique, QuantumScale, and _CubeInfo::target.

Referenced by AssignImageColors(), FloydSteinbergDither(), and RiemersmaDither().

static size_t ColorToNodeId	(	const CubeInfo *	cube_info,
		const DoublePixelPacket *	pixel,
		size_t	index
	)			`[inline, static]`

References _CubeInfo::associate_alpha, ClampPixel(), GetPixelBlue, GetPixelGreen, GetPixelOpacity, GetPixelRed, MagickFalse, and ScaleQuantumToChar().

Referenced by AssignImageColors(), ClassifyImageColors(), FloydSteinbergDither(), and RiemersmaDither().

MagickExport MagickBooleanType CompressImageColormap ( Image * image )

References _Image::colors, _Image::debug, _Image::exception, _Image::filename, GetMagickModule, GetQuantizeInfo(), IsPaletteImage(), LogMagickEvent(), MagickCoreSignature, MagickFalse, MaxTreeDepth, _QuantizeInfo::number_colors, QuantizeImage(), _Image::signature, TraceEvent, and _QuantizeInfo::tree_depth.

static size_t DefineImageColormap	(	Image *	image,
		CubeInfo *	cube_info,
		NodeInfo *	node_info
	)			`[static]`

static void DestroyCubeInfo ( CubeInfo * cube_info )

References DestroyQuantizeInfo(), _CubeInfo::memory_info, _Nodes::next, _CubeInfo::node_queue, _Nodes::nodes, _CubeInfo::quantize_info, RelinquishMagickMemory(), and RelinquishVirtualMemory().

Referenced by QuantizeImage(), QuantizeImages(), RemapImage(), and RemapImages().

static DoublePixelPacket** DestroyPixelThreadSet ( DoublePixelPacket ** pixels ) [static]

References GetMagickResourceLimit(), RelinquishMagickMemory(), and ThreadResource.

Referenced by AcquirePixelThreadSet(), and FloydSteinbergDither().

MagickExport QuantizeInfo* DestroyQuantizeInfo ( QuantizeInfo * quantize_info )

References GetMagickModule, LogMagickEvent(), MagickCoreSignature, RelinquishMagickMemory(), _QuantizeInfo::signature, and TraceEvent.

Referenced by DestroyCubeInfo(), PosterizeImageChannel(), SetImageType(), and XDestroyResourceInfo().

static MagickBooleanType DitherImage	(	Image *	image,
		CubeInfo *	cube_info
	)

static MagickBooleanType FloydSteinbergDither	(	Image *	image,
		CubeInfo *	cube_info
	)			`[static]`

References AcquireAuthenticCacheView(), AcquirePixelThreadSet(), _CubeInfo::associate_alpha, AssociateAlphaPixel(), _DoublePixelPacket::blue, _CubeInfo::cache, CacheOffset(), _NodeInfo::child, ClampPixel(), ClosestColor(), _CubeInfo::color_number, _Image::colormap, ColorToNodeId(), _Image::columns, DestroyCacheView(), DestroyPixelThreadSet(), _CubeInfo::distance, DitherImageTag, _Image::exception, GetCacheViewAuthenticIndexQueue(), GetCacheViewAuthenticPixels(), GetImageArtifact(), GetOpenMPThreadId(), _DoublePixelPacket::green, magick_restrict, MagickFalse, MagickTrue, MaxTreeDepth, _QuantizeInfo::measure_error, _PixelPacket::opacity, _DoublePixelPacket::opacity, _NodeInfo::parent, _Image::progress_monitor, PseudoClass, _CubeInfo::quantize_info, QuantumRange, _DoublePixelPacket::red, _CubeInfo::root, _Image::rows, SetImageProgress(), SetPixelIndex, SetPixelOpacity, SetPixelRgb, _Image::storage_class, StringToDoubleInterval(), SyncCacheViewAuthenticPixels(), and _CubeInfo::target.

Referenced by DitherImage().

static CubeInfo * GetCubeInfo	(	const QuantizeInfo *	quantize_info,
		const size_t	depth,
		const size_t	maximum_colors
	)			`[static]`

MagickExport MagickBooleanType GetImageQuantizeError ( Image * image )

References AcquireVirtualCacheView(), _PixelPacket::blue, _Image::colormap, _Image::columns, _Image::debug, DestroyCacheView(), DirectClass, _Image::error, _Image::exception, _Image::filename, GetCacheViewAuthenticIndexQueue(), GetCacheViewVirtualPixels(), GetMagickModule, GetNumberColors(), GetPixelAlpha, GetPixelBlue, GetPixelGreen, GetPixelIndex, GetPixelRed, _PixelPacket::green, LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickTrue, _Image::matte, _ErrorInfo::mean_error_per_pixel, _ErrorInfo::normalized_maximum_error, _ErrorInfo::normalized_mean_error, _PixelPacket::opacity, PerceptibleReciprocal(), QuantumRange, QuantumScale, _PixelPacket::red, _Image::rows, _Image::signature, _Image::storage_class, _Image::total_colors, and TraceEvent.

Referenced by AssignImageColors(), and QuantizationError().

static NodeInfo * GetNodeInfo	(	CubeInfo *	cube_info,
		const size_t	id,
		const size_t	level,
		NodeInfo *	parent
	)			`[static]`

References AcquireMagickMemory(), AcquireQuantumMemory(), _CubeInfo::free_nodes, _NodeInfo::id, _NodeInfo::level, _Nodes::next, _CubeInfo::next_node, _CubeInfo::node_queue, _CubeInfo::nodes, _Nodes::nodes, NodesInAList, and _NodeInfo::parent.

Referenced by ClassifyImageColors(), and GetCubeInfo().

MagickExport void GetQuantizeInfo ( QuantizeInfo * quantize_info )

static int IntensityCompare	(	const void *	x,
		const void *	y
	)			`[static]`

References PixelPacketIntensity().

Referenced by SetGrayscaleImage().

static MagickBooleanType IsSameColor	(	const Image *	image,
		const PixelPacket *	p,
		const PixelPacket *	q
	)			`[inline, static]`

References GetPixelBlue, GetPixelGreen, GetPixelOpacity, GetPixelRed, MagickFalse, MagickTrue, and _Image::matte.

Referenced by AssignImageColors(), ClassifyImageColors(), and SetGrayscaleImage().

static int MagickRealTypeCompare	(	const void *	error_p,
		const void *	error_q
	)			`[static]`

References MagickEpsilon.

Referenced by ReduceImageColors().

static double MagickRound ( double x ) [inline, static]

MagickExport MagickBooleanType PosterizeImage	(	Image *	image,
		const size_t	levels,
		const MagickBooleanType	dither
	)

References DefaultChannels, and PosterizeImageChannel().

MagickExport MagickBooleanType PosterizeImageChannel	(	Image *	image,
		const ChannelType	channel,
		const size_t	levels,
		const MagickBooleanType	dither
	)

References AcquireAuthenticCacheView(), AcquireQuantizeInfo(), _PixelPacket::blue, BlueChannel, CMYKColorspace, _Image::colormap, _Image::colors, _Image::colorspace, _Image::columns, _Image::debug, DestroyCacheView(), DestroyQuantizeInfo(), _QuantizeInfo::dither, _Image::exception, _Image::filename, GetCacheViewAuthenticIndexQueue(), GetCacheViewAuthenticPixels(), GetMagickModule, GetPixelBlue, GetPixelGreen, GetPixelIndex, GetPixelOpacity, GetPixelRed, _PixelPacket::green, GreenChannel, IndexChannel, LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickMin, MagickTrue, _Image::matte, MaxColormapSize, MaxTreeDepth, _QuantizeInfo::number_colors, _PixelPacket::opacity, OpacityChannel, PosterizeImageTag, PosterizePixel, _Image::progress_monitor, PseudoClass, QuantizeImage(), _PixelPacket::red, RedChannel, _Image::rows, SetImageProgress(), SetPixelBlue, SetPixelGreen, SetPixelIndex, SetPixelOpacity, SetPixelRed, _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), TraceEvent, and _QuantizeInfo::tree_depth.

Referenced by PosterizeImage().

static void PruneChild	(	CubeInfo *	cube_info,
		const NodeInfo *	node_info
	)			`[static]`

References _CubeInfo::associate_alpha, _DoublePixelPacket::blue, _NodeInfo::child, _DoublePixelPacket::green, _NodeInfo::id, MagickFalse, _CubeInfo::maximum_colors, _CubeInfo::nodes, _NodeInfo::number_unique, _DoublePixelPacket::opacity, _NodeInfo::parent, _DoublePixelPacket::red, and _NodeInfo::total_color.

Referenced by PruneLevel(), PruneToCubeDepth(), and Reduce().

static void PruneLevel	(	CubeInfo *	cube_info,
		const NodeInfo *	node_info
	)

References _CubeInfo::associate_alpha, _NodeInfo::child, _CubeInfo::depth, _NodeInfo::level, MagickFalse, and PruneChild().

Referenced by ClassifyImageColors().

static void PruneToCubeDepth	(	CubeInfo *	cube_info,
		const NodeInfo *	node_info
	)

References _CubeInfo::associate_alpha, _NodeInfo::child, _CubeInfo::depth, _NodeInfo::level, MagickFalse, and PruneChild().

Referenced by ClassifyImageColors().

static size_t QuantizeErrorFlatten	(	const CubeInfo *	cube_info,
		const NodeInfo *	node_info,
		const ssize_t	offset,
		MagickRealType *	quantize_error
	)			`[static]`

References _CubeInfo::associate_alpha, _NodeInfo::child, MagickFalse, _CubeInfo::nodes, and _NodeInfo::quantize_error.

Referenced by ReduceImageColors().

MagickExport MagickBooleanType QuantizeImage	(	const QuantizeInfo *	quantize_info,
		Image *	image
	)

MagickExport MagickBooleanType QuantizeImages	(	const QuantizeInfo *	quantize_info,
		Image *	images
	)

static void Reduce	(	CubeInfo *	cube_info,
		const NodeInfo *	node_info
	)			`[static]`

References _CubeInfo::associate_alpha, _NodeInfo::child, _CubeInfo::colors, MagickFalse, _CubeInfo::next_threshold, _NodeInfo::number_unique, PruneChild(), _CubeInfo::pruning_threshold, and _NodeInfo::quantize_error.

Referenced by ReduceImageColors().

static void ReduceImageColors	(	const Image *	image,
		CubeInfo *	cube_info
	)

References AcquireQuantumMemory(), _CubeInfo::colors, MagickFalse, MagickRealTypeCompare(), _CubeInfo::maximum_colors, _CubeInfo::next_threshold, _CubeInfo::nodes, _CubeInfo::pruning_threshold, _NodeInfo::quantize_error, QuantizeErrorFlatten(), Reduce(), ReduceImageTag, RelinquishMagickMemory(), _CubeInfo::root, and SetImageProgress().

Referenced by QuantizeImage(), and QuantizeImages().

MagickExport MagickBooleanType RemapImage	(	const QuantizeInfo *	quantize_info,
		Image *	image,
		const Image *	remap_image
	)

MagickExport MagickBooleanType RemapImages	(	const QuantizeInfo *	quantize_info,
		Image *	images,
		const Image *	remap_image
	)

static void Riemersma	(	Image *	image,
		CacheView *	image_view,
		CubeInfo *	cube_info,
		const size_t	level,
		const unsigned int	direction
	)			`[static]`

References EastGravity, NorthGravity, RiemersmaDither(), SouthGravity, and WestGravity.

Referenced by DitherImage().

static MagickBooleanType RiemersmaDither	(	Image *	image,
		CacheView *	image_view,
		CubeInfo *	cube_info,
		const unsigned int	direction
	)			`[static]`

References _CubeInfo::associate_alpha, AssociateAlphaPixel(), _DoublePixelPacket::blue, _CubeInfo::cache, CacheOffset(), _NodeInfo::child, ClampPixel(), ClosestColor(), _CubeInfo::color_number, _Image::colormap, ColorToNodeId(), _Image::columns, _CubeInfo::distance, DitherImageTag, EastGravity, _CubeInfo::error, ErrorQueueLength, _Image::exception, GetCacheViewAuthenticIndexQueue(), GetCacheViewAuthenticPixels(), _DoublePixelPacket::green, magick_restrict, MagickFalse, MagickTrue, MaxTreeDepth, _QuantizeInfo::measure_error, NorthGravity, _CubeInfo::offset, _PixelPacket::opacity, _DoublePixelPacket::opacity, _NodeInfo::parent, PseudoClass, _CubeInfo::quantize_info, QuantumRange, _DoublePixelPacket::red, _CubeInfo::root, _Image::rows, SetImageProgress(), SetPixelOpacity, SetPixelRgb, SouthGravity, _CubeInfo::span, _Image::storage_class, SyncCacheViewAuthenticPixels(), _CubeInfo::target, _CubeInfo::weights, WestGravity, _CubeInfo::x, and _CubeInfo::y.

Referenced by DitherImage(), and Riemersma().

static void SetAssociatedAlpha	(	const Image *	image,
		CubeInfo *	cube_info
	)			`[inline, static]`

References _CubeInfo::associate_alpha, _QuantizeInfo::colorspace, GRAYColorspace, LinearGRAYColorspace, MagickFalse, _Image::matte, _QuantizeInfo::number_colors, and _CubeInfo::quantize_info.

Referenced by ClassifyImageColors().

static MagickBooleanType SetGrayscaleImage ( Image * image )

References AcquireAuthenticCacheView(), AcquireImageColormap(), AcquireQuantumMemory(), BilevelType, _PixelPacket::blue, _Image::colormap, _Image::colors, _Image::columns, DestroyCacheView(), _Image::exception, _Image::filename, GetCacheViewAuthenticIndexQueue(), GetCacheViewAuthenticPixels(), GetPixelBlue, GetPixelGreen, GetPixelIndex, GetPixelRed, GRAYColorspace, GrayscaleType, _PixelPacket::green, IntensityCompare(), IsSameColor(), magick_restrict, MagickCoreSignature, MagickFalse, MagickMax, MagickTrue, MaxColormapSize, MaxMap, _PixelPacket::opacity, PseudoClass, _PixelPacket::red, RelinquishMagickMemory(), ResourceLimitError, _Image::rows, ScaleQuantumToMap(), SetImageMonochrome(), SetPixelIndex, _Image::signature, _Image::storage_class, SyncCacheViewAuthenticPixels(), ThrowBinaryException, TransformImageColorspace(), and _Image::type.

Referenced by QuantizeImage().

quantize.c File Reference

Data Structures

Defines

Typedefs

Functions

Define Documentation

Typedef Documentation

Function Documentation