resample.c File Reference

#include "MagickCore/studio.h"
#include "MagickCore/artifact.h"
#include "MagickCore/color-private.h"
#include "MagickCore/cache.h"
#include "MagickCore/draw.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/gem.h"
#include "MagickCore/image.h"
#include "MagickCore/image-private.h"
#include "MagickCore/log.h"
#include "MagickCore/magick.h"
#include "MagickCore/memory_.h"
#include "MagickCore/memory-private.h"
#include "MagickCore/pixel.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/quantum.h"
#include "MagickCore/random_.h"
#include "MagickCore/resample.h"
#include "MagickCore/resize.h"
#include "MagickCore/resize-private.h"
#include "MagickCore/resource_.h"
#include "MagickCore/token.h"
#include "MagickCore/transform.h"
#include "MagickCore/signature-private.h"
#include "MagickCore/utility.h"
#include "MagickCore/utility-private.h"
#include "MagickCore/option.h"

Include dependency graph for resample.c:

Go to the source code of this file.

Data Structures
struct	_ResampleFilter

Macros
#define	EWA   1 /* Normal EWA handling - raw or clamped */
#define	EWA_CLAMP   1 /* EWA Clamping from Nicolas Robidoux */
#define	FILTER_LUT   1 /* Use a LUT rather then direct filter calls */
#define	DEBUG_ELLIPSE   0 /* output ellipse info for debug */
#define	DEBUG_HIT_MISS   0 /* output hit/miss pixels (as gnuplot commands) */
#define	DEBUG_NO_PIXEL_HIT   0 /* Make pixels that fail to hit anything - RED */
#define	WLUT_WIDTH   1024 /* size of the filter cache */
#define	DEBUG_HIT_MISS   0 /* only valid if DEBUG_ELLIPSE is enabled */

Functions
MagickExport ResampleFilter *	AcquireResampleFilter (const Image *image, ExceptionInfo *exception)
MagickExport ResampleFilter *	DestroyResampleFilter (ResampleFilter *resample_filter)
MagickExport MagickBooleanType	ResamplePixelColor (ResampleFilter *resample_filter, const double u0, const double v0, PixelInfo *pixel, ExceptionInfo *exception)
static void	ClampUpAxes (const double dux, const double dvx, const double duy, const double dvy, double *major_mag, double *minor_mag, double *major_unit_x, double *major_unit_y, double *minor_unit_x, double *minor_unit_y)
MagickExport void	ScaleResampleFilter (ResampleFilter *resample_filter, const double dux, const double duy, const double dvx, const double dvy)
MagickExport void	SetResampleFilter (ResampleFilter *resample_filter, const FilterType filter)
MagickExport MagickBooleanType	SetResampleFilterInterpolateMethod (ResampleFilter *resample_filter, const PixelInterpolateMethod method)
MagickExport MagickBooleanType	SetResampleFilterVirtualPixelMethod (ResampleFilter *resample_filter, const VirtualPixelMethod method)

Macro Definition Documentation

DEBUG_ELLIPSE

#define DEBUG_ELLIPSE   0 /* output ellipse info for debug */

Definition at line 82 of file resample.c.

DEBUG_HIT_MISS [1/2]

#define DEBUG_HIT_MISS   0 /* output hit/miss pixels (as gnuplot commands) */

Definition at line 83 of file resample.c.

DEBUG_HIT_MISS [2/2]

#define DEBUG_HIT_MISS   0 /* only valid if DEBUG_ELLIPSE is enabled */

Definition at line 83 of file resample.c.

DEBUG_NO_PIXEL_HIT

#define DEBUG_NO_PIXEL_HIT   0 /* Make pixels that fail to hit anything - RED */

Definition at line 84 of file resample.c.

EWA

#define EWA   1 /* Normal EWA handling - raw or clamped */

Definition at line 75 of file resample.c.

EWA_CLAMP

#define EWA_CLAMP   1 /* EWA Clamping from Nicolas Robidoux */

Definition at line 77 of file resample.c.

FILTER_LUT

#define FILTER_LUT   1 /* Use a LUT rather then direct filter calls */

Definition at line 79 of file resample.c.

WLUT_WIDTH

#define WLUT_WIDTH   1024 /* size of the filter cache */

Definition at line 87 of file resample.c.

Function Documentation

AcquireResampleFilter()

MagickExport ResampleFilter * AcquireResampleFilter	(	const Image *	image,
		ExceptionInfo *	exception
	)

Definition at line 208 of file resample.c.

References AcquireCriticalMemory(), AcquireVirtualCacheView(), _ResampleFilter::average_defined, _Image::columns, _ResampleFilter::debug, _ResampleFilter::exception, _Image::filename, _Image::filter, GetImageVirtualPixelMethod(), GetMagickModule, _ResampleFilter::image, _ResampleFilter::image_area, _Image::interpolate, IsEventLogging(), LogMagickEvent(), MagickCoreSignature, MagickFalse, ReferenceImage(), _Image::rows, SetResampleFilter(), SetResampleFilterInterpolateMethod(), SetResampleFilterVirtualPixelMethod(), _ExceptionInfo::signature, _Image::signature, _ResampleFilter::signature, TraceEvent, and _ResampleFilter::view.

Referenced by AcquireResampleFilterTLS(), and CompositeImage().

ClampUpAxes()

static void ClampUpAxes ( const double  dux, const double  dvx, const double  duy, const double  dvy, double *  major_mag, double *  minor_mag, double *  major_unit_x, double *  major_unit_y, double *  minor_unit_x, double *  minor_unit_y  )

inlinestatic

Definition at line 709 of file resample.c.

Referenced by ScaleResampleFilter().

DestroyResampleFilter()

MagickExport ResampleFilter * DestroyResampleFilter

(

ResampleFilter *

resample_filter

)

Definition at line 262 of file resample.c.

References DestroyCacheView(), DestroyImage(), DestroyResizeFilter(), _Image::filename, GetMagickModule, _ResampleFilter::image, IsEventLogging(), LogMagickEvent(), MagickCoreSignature, MagickFalse, RelinquishMagickMemory(), _ResampleFilter::signature, TraceEvent, and _ResampleFilter::view.

Referenced by CompositeImage(), and DestroyResampleFilterTLS().

ResamplePixelColor()

MagickExport MagickBooleanType ResamplePixelColor	(	ResampleFilter *	resample_filter,
		const double	u0,
		const double	v0,
		PixelInfo *	pixel,
		ExceptionInfo *	exception
	)

Definition at line 315 of file resample.c.

References _ResampleFilter::A, AcquireVirtualCacheView(), _PixelInfo::alpha, _PixelInfo::alpha_trait, _ResampleFilter::average_defined, _ResampleFilter::average_pixel, AverageInterpolatePixel, _ResampleFilter::B, _Image::background_color, BackgroundVirtualPixelMethod, _PixelInfo::black, BlackVirtualPixelMethod, _PixelInfo::blue, BoxFilter, _ResampleFilter::C, CheckerTileVirtualPixelMethod, ClampToQuantum(), CMYKColorspace, _PixelInfo::colorspace, _Image::columns, DestroyCacheView(), DestroyImage(), DitherVirtualPixelMethod, _ResampleFilter::do_interpolate, EdgeVirtualPixelMethod, _ResampleFilter::exception, _ResampleFilter::filter_lut, FormatLocaleFile(), GetCacheViewVirtualPixels(), GetPixelAlpha(), GetPixelBlack(), GetPixelBlue(), GetPixelChannels(), GetPixelGreen(), GetPixelInfo(), GetPixelInfoPixel(), GetPixelRed(), GetResizeFilterWeight(), GrayVirtualPixelMethod, _PixelInfo::green, HorizontalTileEdgeVirtualPixelMethod, HorizontalTileVirtualPixelMethod, _ResampleFilter::image, IntegerInterpolatePixel, _ResampleFilter::interpolate, InterpolatePixelInfo(), _ResampleFilter::limit_reached, MagickCoreSignature, MagickEpsilon, MagickFalse, MagickTrue, MaskVirtualPixelMethod, MirrorVirtualPixelMethod, QuantumRange, QuantumScale, RandomVirtualPixelMethod, _PixelInfo::red, ResizeImage(), _Image::rows, _ResampleFilter::signature, _ResampleFilter::slope, TileVirtualPixelMethod, TransparentVirtualPixelMethod, _ResampleFilter::Ulimit, UndefinedPixelTrait, UndefinedVirtualPixelMethod, _ResampleFilter::Uwidth, VerticalTileEdgeVirtualPixelMethod, VerticalTileVirtualPixelMethod, _ResampleFilter::view, _ResampleFilter::virtual_pixel, _ResampleFilter::Vlimit, WhiteVirtualPixelMethod, and WLUT_WIDTH.

Referenced by CompositeImage(), and DistortImage().

ScaleResampleFilter()

MagickExport void ScaleResampleFilter	(	ResampleFilter *	resample_filter,
		const double	dux,
		const double	duy,
		const double	dvx,
		const double	dvy
	)

Definition at line 1038 of file resample.c.

References _ResampleFilter::A, _ResampleFilter::B, _ResampleFilter::C, ClampUpAxes(), _ResampleFilter::filter, FormatLocaleFile(), _ResampleFilter::image_area, _ResampleFilter::limit_reached, MagickCoreSignature, MagickEpsilon, MagickFalse, MagickMaximumValue, MagickPI, MagickTrue, PerceptibleReciprocal(), PointFilter, RadiansToDegrees(), _ResampleFilter::signature, _ResampleFilter::slope, _ResampleFilter::support, _ResampleFilter::Ulimit, _ResampleFilter::Uwidth, _ResampleFilter::Vlimit, and WLUT_WIDTH.

Referenced by CompositeImage(), and SetResampleFilter().

SetResampleFilter()

MagickExport void SetResampleFilter	(	ResampleFilter *	resample_filter,
		const FilterType	filter
	)

Definition at line 1241 of file resample.c.

References AcquireResizeFilter(), CommandOptionToMnemonic(), DestroyResizeFilter(), _ResampleFilter::do_interpolate, _ResampleFilter::exception, _ResampleFilter::filter, _ResampleFilter::filter_lut, GetImageArtifact(), GetMagickModule, GetMagickPrecision(), GetResizeFilterSupport(), GetResizeFilterWeight(), _ResampleFilter::image, IsStringTrue(), MagickCoreSignature, MagickFalse, MagickFilterOptions, MagickTrue, ModuleError, PointFilter, RobidouxFilter, ScaleResampleFilter(), _ResampleFilter::signature, _ResampleFilter::support, ThrowMagickException(), UndefinedFilter, and WLUT_WIDTH.

Referenced by AcquireResampleFilter(), AcquireResampleFilterTLS(), and CompositeImage().

SetResampleFilterInterpolateMethod()

MagickExport MagickBooleanType SetResampleFilterInterpolateMethod	(	ResampleFilter *	resample_filter,
		const PixelInterpolateMethod	method
	)

Definition at line 1404 of file resample.c.

References _Image::filename, GetMagickModule, _ResampleFilter::image, _ResampleFilter::interpolate, IsEventLogging(), LogMagickEvent(), MagickCoreSignature, MagickFalse, MagickTrue, _ResampleFilter::signature, and TraceEvent.

Referenced by AcquireResampleFilter().

SetResampleFilterVirtualPixelMethod()

MagickExport MagickBooleanType SetResampleFilterVirtualPixelMethod	(	ResampleFilter *	resample_filter,
		const VirtualPixelMethod	method
	)

Definition at line 1443 of file resample.c.

References _Image::filename, GetMagickModule, _ResampleFilter::image, IsEventLogging(), LogMagickEvent(), MagickCoreSignature, MagickFalse, MagickTrue, SetCacheViewVirtualPixelMethod(), _ResampleFilter::signature, TraceEvent, UndefinedVirtualPixelMethod, _ResampleFilter::view, and _ResampleFilter::virtual_pixel.

Referenced by AcquireResampleFilter(), and AcquireResampleFilterTLS().