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pixel.h
/*
Copyright @ 1999 ImageMagick Studio LLC, a non-profit organization
dedicated to making software imaging solutions freely available.
You may not use this file except in compliance with the License. You may
obtain a copy of the License at
https://imagemagick.org/script/license.php
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
MagickCore image pixel methods.
*/
#ifndef MAGICKCORE_PIXEL_H
#define MAGICKCORE_PIXEL_H
#include "MagickCore/colorspace.h"
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
#define MaxPixelChannels 64
#undef index
/*
Pixel enum declarations.
*/
#if defined(MAGICKCORE_64BIT_CHANNEL_MASK_SUPPORT)
typedef enum : MagickOffsetType
#else
typedef enum
#endif
{
UndefinedChannel = 0x0000,
RedChannel = 0x0001,
GrayChannel = 0x0001,
CyanChannel = 0x0001,
LChannel = 0x0001,
GreenChannel = 0x0002,
MagentaChannel = 0x0002,
aChannel = 0x0002,
BlueChannel = 0x0004,
bChannel = 0x0002,
YellowChannel = 0x0004,
BlackChannel = 0x0008,
AlphaChannel = 0x0010,
OpacityChannel = 0x0010,
IndexChannel = 0x0020, /* Color Index Table? */
ReadMaskChannel = 0x0040, /* Pixel is Not Readable? */
WriteMaskChannel = 0x0080, /* Pixel is Write Protected? */
MetaChannel = 0x0100, /* not used */
CompositeMaskChannel = 0x0200, /* SVG mask */
CompositeChannels = 0x001F,
#if defined(MAGICKCORE_64BIT_CHANNEL_MASK_SUPPORT)
AllChannels = MagickLLConstant(0x7FFFFFFFFFFFFFFF),
#else
AllChannels = 0X7FFFFFF,
#endif
/*
Special purpose channel types.
FUTURE: are these needed any more - they are more like hacks
SyncChannels for example is NOT a real channel but a 'flag'
It really says -- "User has not defined channels"
Though it does have extra meaning in the "-auto-level" operator
*/
TrueAlphaChannel = 0x0100, /* extract actual alpha channel from opacity */
RGBChannels = 0x0200, /* set alpha from grayscale mask in RGB */
GrayChannels = 0x0400,
SyncChannels = 0x20000, /* channels modified as a single unit */
DefaultChannels = AllChannels
} ChannelType; /* must correspond to PixelChannel */
typedef enum
{
UndefinedPixelChannel = 0,
RedPixelChannel = 0,
CyanPixelChannel = 0,
GrayPixelChannel = 0,
LPixelChannel = 0,
LabelPixelChannel = 0,
YPixelChannel = 0,
aPixelChannel = 1,
GreenPixelChannel = 1,
MagentaPixelChannel = 1,
CbPixelChannel = 1,
bPixelChannel = 2,
BluePixelChannel = 2,
YellowPixelChannel = 2,
CrPixelChannel = 2,
BlackPixelChannel = 3,
AlphaPixelChannel = 4,
IndexPixelChannel = 5,
ReadMaskPixelChannel = 6,
WriteMaskPixelChannel = 7,
MetaPixelChannel = 8, /* deprecated */
CompositeMaskPixelChannel = 9,
MetaPixelChannels = 10,
IntensityPixelChannel = MaxPixelChannels, /* ???? */
CompositePixelChannel = MaxPixelChannels, /* ???? */
SyncPixelChannel = MaxPixelChannels+1 /* not a real channel */
} PixelChannel; /* must correspond to ChannelType */
typedef enum
{
UndefinedPixelIntensityMethod = 0,
AveragePixelIntensityMethod,
BrightnessPixelIntensityMethod,
LightnessPixelIntensityMethod,
MSPixelIntensityMethod,
Rec601LumaPixelIntensityMethod,
Rec601LuminancePixelIntensityMethod,
Rec709LumaPixelIntensityMethod,
Rec709LuminancePixelIntensityMethod,
RMSPixelIntensityMethod
} PixelIntensityMethod;
typedef enum
{
UndefinedInterpolatePixel,
AverageInterpolatePixel, /* Average 4 nearest neighbours */
Average9InterpolatePixel, /* Average 9 nearest neighbours */
Average16InterpolatePixel, /* Average 16 nearest neighbours */
BackgroundInterpolatePixel, /* Just return background color */
BilinearInterpolatePixel, /* Triangular filter interpolation */
BlendInterpolatePixel, /* blend of nearest 1, 2 or 4 pixels */
CatromInterpolatePixel, /* Catmull-Rom interpolation */
IntegerInterpolatePixel, /* Integer (floor) interpolation */
MeshInterpolatePixel, /* Triangular Mesh interpolation */
NearestInterpolatePixel, /* Nearest Neighbour Only */
SplineInterpolatePixel /* Cubic Spline (blurred) interpolation */
} PixelInterpolateMethod;
typedef enum
{
UndefinedPixelMask = 0x000000,
ReadPixelMask = 0x000001,
WritePixelMask = 0x000002,
CompositePixelMask = 0x000004
} PixelMask;
typedef enum
{
UndefinedPixelTrait = 0x000000,
CopyPixelTrait = 0x000001,
UpdatePixelTrait = 0x000002,
BlendPixelTrait = 0x000004
} PixelTrait;
typedef enum
{
UndefinedPixel,
CharPixel,
DoublePixel,
FloatPixel,
LongPixel,
LongLongPixel,
QuantumPixel,
ShortPixel
} StorageType;
/*
Pixel typedef declarations.
*/
typedef struct _PixelChannelMap
{
PixelChannel
channel;
PixelTrait
traits;
ssize_t
offset;
} PixelChannelMap;
typedef struct _PixelInfo
{
ClassType
storage_class;
ColorspaceType
colorspace;
PixelTrait
alpha_trait;
double
fuzz;
size_t
depth;
MagickSizeType
count;
MagickRealType
red,
green,
blue,
black,
alpha,
index;
} PixelInfo;
typedef struct _PixelPacket
{
unsigned int
red,
green,
blue,
alpha,
black;
} PixelPacket;
typedef struct _CacheView
CacheView_;
/*
Pixel method declarations.
*/
extern MagickExport ChannelType
SetPixelChannelMask(Image *,const ChannelType);
extern MagickExport MagickBooleanType
ExportImagePixels(const Image *,const ssize_t,const ssize_t,const size_t,
const size_t,const char *,const StorageType,void *,ExceptionInfo *),
ImportImagePixels(Image *,const ssize_t,const ssize_t,const size_t,
const size_t,const char *,const StorageType,const void *,ExceptionInfo *),
InterpolatePixelChannel(const Image *magick_restrict,const CacheView_ *,
const PixelChannel,const PixelInterpolateMethod,const double,const double,
double *,ExceptionInfo *),
InterpolatePixelChannels(const Image *magick_restrict,const CacheView_ *,
const Image * magick_restrict,const PixelInterpolateMethod,const double,
const double,Quantum *,ExceptionInfo *),
InterpolatePixelInfo(const Image *,const CacheView_ *,
const PixelInterpolateMethod,const double,const double,PixelInfo *,
ExceptionInfo *),
IsFuzzyEquivalencePixel(const Image *,const Quantum *,const Image *,
const Quantum *) magick_attribute((__pure__)),
IsFuzzyEquivalencePixelInfo(const PixelInfo *,const PixelInfo *)
magick_attribute((__pure__)),
SetPixelMetaChannels(Image *,const size_t,ExceptionInfo *),
SortImagePixels(Image *,ExceptionInfo *);
extern MagickExport MagickRealType
GetPixelInfoIntensity(const Image *magick_restrict,
const PixelInfo *magick_restrict) magick_hot_spot,
GetPixelIntensity(const Image *magick_restrict,
const Quantum *magick_restrict) magick_hot_spot;
extern MagickExport PixelChannelMap
*AcquirePixelChannelMap(void),
*ClonePixelChannelMap(PixelChannelMap *),
*DestroyPixelChannelMap(PixelChannelMap *);
extern MagickExport PixelInfo
*ClonePixelInfo(const PixelInfo *);
extern MagickExport MagickRealType
DecodePixelGamma(const MagickRealType) magick_hot_spot,
EncodePixelGamma(const MagickRealType) magick_hot_spot;
extern MagickExport void
ConformPixelInfo(Image *,const PixelInfo *,PixelInfo *,ExceptionInfo *),
GetPixelInfo(const Image *,PixelInfo *);
#if defined(__cplusplus) || defined(c_plusplus)
}
#endif
#endif
_CacheView
Definition cache-view.c:66
_ExceptionInfo
Definition exception.h:102
_Image
Definition image.h:132
_PixelChannelMap
Definition pixel.h:170
_PixelInfo
Definition pixel.h:182
_PixelPacket
Definition pixel.h:211