channel.c File Reference

#include "MagickCore/studio.h"
#include "MagickCore/cache-private.h"
#include "MagickCore/channel.h"
#include "MagickCore/colorspace-private.h"
#include "MagickCore/composite-private.h"
#include "MagickCore/enhance.h"
#include "MagickCore/image.h"
#include "MagickCore/list.h"
#include "MagickCore/log.h"
#include "MagickCore/monitor.h"
#include "MagickCore/monitor-private.h"
#include "MagickCore/option.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/pixel-private.h"
#include "MagickCore/resource_.h"
#include "MagickCore/string-private.h"
#include "MagickCore/thread-private.h"
#include "MagickCore/token.h"
#include "MagickCore/utility.h"
#include "MagickCore/version.h"

Defines
#define	ChannelFxImageTag   "ChannelFx/Image"
#define	CombineImageTag   "Combine/Image"
#define	GetChannelBit(mask, bit)   (((size_t) (mask) >> (size_t) (bit)) & 0x01)
#define	SeparateImageTag   "Separate/Image"
Enumerations
enum	ChannelFx { ExtractChannelOp, AssignChannelOp, ExchangeChannelOp, TransferChannelOp }
Functions
static MagickBooleanType	ChannelImage (Image *destination_image, const PixelChannel destination_channel, const ChannelFx channel_op, const Image *source_image, const PixelChannel source_channel, const Quantum pixel, ExceptionInfo *exception)
MagickExport Image *	ChannelFxImage (const Image *image, const char *expression, ExceptionInfo *exception)
MagickExport Image *	CombineImages (const Image *image, const ColorspaceType colorspace, ExceptionInfo *exception)
MagickExport MagickBooleanType	GetImageAlphaChannel (const Image *image)
MagickExport Image *	SeparateImage (const Image *image, const ChannelType channel_type, ExceptionInfo *exception)
MagickExport Image *	SeparateImages (const Image *image, ExceptionInfo *exception)
static void	FlattenPixelInfo (const Image *image, const PixelInfo *p, const double alpha, const Quantum *q, const double beta, Quantum *composite)
MagickExport MagickBooleanType	SetImageAlphaChannel (Image *image, const AlphaChannelOption alpha_type, ExceptionInfo *exception)

---

Define Documentation

#define ChannelFxImageTag   "ChannelFx/Image"

Referenced by ChannelFxImage().

#define CombineImageTag   "Combine/Image"

Referenced by CombineImages().

#define GetChannelBit	(	mask,
		bit		)	(((size_t) (mask) >> (size_t) (bit)) & 0x01)

Referenced by SeparateImage(), and SetPixelChannelMask().

#define SeparateImageTag   "Separate/Image"

Referenced by SeparateImage().

---

Enumeration Type Documentation

enum ChannelFx

Enumerator:

ExtractChannelOp
AssignChannelOp
ExchangeChannelOp
TransferChannelOp

---

Function Documentation

MagickExport Image* ChannelFxImage	(	const Image *	image,
		const char *	expression,
		ExceptionInfo *	exception
	)

References _Image::alpha_trait, AlphaPixelChannel, AppendImageToList(), AssignChannelOp, BlackPixelChannel, BlendPixelTrait, BluePixelChannel, ChannelFxImageTag, ChannelImage(), _Image::channels, ClampToQuantum(), CloneImage(), _Image::colorspace, CompositeMaskChannel, CompositeMaskPixelChannel, _Image::debug, DestroyImageList(), DirectClass, ExchangeChannelOp, ExtractChannelOp, _Image::filename, GetFirstImageInList(), GetLastImageInList(), GetMagickModule, GetNextImageInList(), GetNextToken(), GetPixelChannels(), GRAYColorspace, GreenPixelChannel, IndexPixelChannel, IsGrayColorspace(), LogMagickEvent(), MagickCoreSignature, MagickFalse, MagickPathExtent, MagickTrue, MetaPixelChannel, OptionError, ParseChannelOption(), ParsePixelChannelOption(), QuantumRange, ReadMaskChannel, ReadMaskPixelChannel, RedPixelChannel, SetImageColorspace(), SetImageProgress(), SetImageStorageClass(), SetPixelChannelMask(), SetPixelMetaChannels(), _ExceptionInfo::signature, _Image::signature, sRGBColorspace, StringToDoubleInterval(), ThrowMagickException(), TraceEvent, TransferChannelOp, UndefinedChannel, UndefinedColorspace, WriteMaskChannel, and WriteMaskPixelChannel.

static MagickBooleanType ChannelImage	(	Image *	destination_image,
		const PixelChannel	destination_channel,
		const ChannelFx	channel_op,
		const Image *	source_image,
		const PixelChannel	source_channel,
		const Quantum	pixel,
		ExceptionInfo *	exception
	)			[static]

References AcquireAuthenticCacheView(), AcquireVirtualCacheView(), AssignChannelOp, _Image::columns, DestroyCacheView(), GetCacheViewAuthenticPixels(), GetCacheViewVirtualPixels(), GetPixelChannel(), GetPixelChannels(), GetPixelChannelTraits(), magick_restrict, MagickFalse, MagickMin, MagickTrue, _Image::rows, SetPixelChannel(), SyncCacheViewAuthenticPixels(), and UndefinedPixelTrait.

Referenced by ChannelFxImage().

MagickExport Image* CombineImages	(	const Image *	image,
		const ColorspaceType	colorspace,
		ExceptionInfo *	exception
	)

References AcquireAuthenticCacheView(), AcquireVirtualCacheView(), _Image::alpha_trait, BlendPixelTrait, CloneImage(), CMYKColorspace, _Image::colorspace, _Image::columns, CombineImageTag, _Image::debug, DestroyCacheView(), DestroyImage(), DirectClass, _Image::filename, _Image::gamma, GetCacheViewAuthenticPixels(), GetCacheViewVirtualPixels(), GetImageListLength(), GetMagickModule, GetNextImageInList(), GetPixelChannelChannel(), GetPixelChannels(), GetPixelChannelTraits(), GetPixelGray(), GRAYColorspace, LinearGRAYColorspace, LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickEpsilon, MagickFalse, MagickTrue, _Image::progress_monitor, RGBColorspace, _Image::rows, SetImageColorspace(), SetImageProgress(), SetImageStorageClass(), _ExceptionInfo::signature, _Image::signature, sRGBColorspace, SyncCacheViewAuthenticPixels(), TraceEvent, UndefinedColorspace, and UndefinedPixelTrait.

static void FlattenPixelInfo	(	const Image *	image,
		const PixelInfo *	p,
		const double	alpha,
		const Quantum *	q,
		const double	beta,
		Quantum *	composite
	)			[inline, static]

References AlphaPixelChannel, _PixelInfo::black, BlackPixelChannel, _PixelInfo::blue, BluePixelChannel, ClampToQuantum(), GetPixelChannelChannel(), GetPixelChannels(), GetPixelChannelTraits(), _PixelInfo::green, GreenPixelChannel, MagickOver_(), PerceptibleReciprocal(), QuantumRange, QuantumScale, _PixelInfo::red, RedPixelChannel, and UndefinedPixelTrait.

Referenced by SetImageAlphaChannel().

MagickExport MagickBooleanType GetImageAlphaChannel

(

const Image *

image

)

References _Image::alpha_trait, _Image::debug, GetMagickModule, LogMagickEvent(), MagickCoreSignature, MagickFalse, MagickTrue, _Image::signature, TraceEvent, and UndefinedPixelTrait.

MagickExport Image* SeparateImage	(	const Image *	image,
		const ChannelType	channel_type,
		ExceptionInfo *	exception
	)

References AcquireAuthenticCacheView(), AcquireVirtualCacheView(), _Image::alpha_trait, CloneImage(), _Image::columns, _Image::debug, DefaultChannels, DestroyCacheView(), DestroyImage(), DirectClass, _Image::filename, _Image::gamma, GetCacheViewVirtualPixels(), GetChannelBit, GetMagickModule, GetPixelChannelChannel(), GetPixelChannels(), GetPixelChannelTraits(), GRAYColorspace, GrayPixelChannel, LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickTrue, _Image::progress_monitor, QueueCacheViewAuthenticPixels(), _Image::rows, SeparateImageTag, SetImageChannelMask(), SetImageColorspace(), SetImageProgress(), SetImageStorageClass(), SetPixelChannel(), _ExceptionInfo::signature, _Image::signature, SyncCacheViewAuthenticPixels(), TraceEvent, and UndefinedPixelTrait.

Referenced by DrawClippingMask(), DrawCompositeMask(), and SeparateImages().

MagickExport Image* SeparateImages	(	const Image *	image,
		ExceptionInfo *	exception
	)

References AppendImageToList(), _Image::debug, _Image::filename, GetMagickModule, GetPixelChannelChannel(), GetPixelChannels(), GetPixelChannelTraits(), LogMagickEvent(), MagickCoreSignature, MagickFalse, NewImageList(), SeparateImage(), _Image::signature, TraceEvent, UndefinedChannel, UndefinedPixelTrait, and UpdatePixelTrait.

MagickExport MagickBooleanType SetImageAlphaChannel	(	Image *	image,
		const AlphaChannelOption	alpha_type,
		ExceptionInfo *	exception
	)

References AcquireAuthenticCacheView(), ActivateAlphaChannel, _PixelInfo::alpha, _PixelInfo::alpha_trait, _Image::alpha_trait, AlphaCompositeOp, AlphaPixelChannel, AssociateAlphaChannel, _Image::background_color, BackgroundAlphaChannel, BlendPixelTrait, _Image::channel_mask, ClampToQuantum(), _Image::columns, CompositeImage(), ConformPixelInfo(), CopyAlphaChannel, CopyPixelTrait, DeactivateAlphaChannel, _Image::debug, DestroyCacheView(), DirectClass, DisassociateAlphaChannel, DiscreteAlphaChannel, ExtractAlphaChannel, FlattenPixelInfo(), GetCacheViewAuthenticPixels(), GetMagickModule, GetPixelAlpha(), GetPixelChannelChannel(), GetPixelChannels(), GetPixelChannelTraits(), GetPixelIntensity(), IntensityCompositeOp, LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickTrue, OffAlphaChannel, OnAlphaChannel, OpaqueAlpha, OpaqueAlphaChannel, PerceptibleReciprocal(), QuantumScale, RemoveAlphaChannel, _Image::rows, SetAlphaChannel, SetImageAlpha(), SetImageStorageClass(), SetPixelChannel(), SetPixelChannelMask(), SetPixelViaPixelInfo(), ShapeAlphaChannel, _Image::signature, SyncCacheViewAuthenticPixels(), SyncImagePixelCache(), TraceEvent, TransparentAlpha, TransparentAlphaChannel, UndefinedAlphaChannel, UndefinedPixelTrait, and UpdatePixelTrait.

Referenced by CannyEdgeImage(), ClearBounds(), ClutImage(), CompareImages(), CompositeImage(), DistortResizeImage(), DrawPrimitive(), HaldClutImage(), ImplodeImage(), MorphologyApply(), OptimizeLayerFrames(), PolaroidImage(), RenderMVGContent(), RenderPostscript(), SetImageBackgroundColor(), SetImageType(), ShadowImage(), ShearImage(), ShearRotateImage(), SimilarityImage(), SwirlImage(), ThumbnailImage(), TransparentPaintImage(), and TransparentPaintImageChroma().