Static build of Imagemagick 7.0.5-5
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194
bin/7.0.5-5/include/ImageMagick-7/MagickCore/quantum.h
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194
bin/7.0.5-5/include/ImageMagick-7/MagickCore/quantum.h
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/*
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Copyright 1999-2017 ImageMagick Studio LLC, a non-profit organization
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dedicated to making software imaging solutions freely available.
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You may not use this file except in compliance with the License.
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obtain a copy of the License at
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https://www.imagemagick.org/script/license.php
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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MagickCore quantum inline methods.
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*/
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#ifndef MAGICKCORE_QUANTUM_H
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#define MAGICKCORE_QUANTUM_H
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#include "MagickCore/image.h"
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#include "MagickCore/semaphore.h"
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#if defined(__cplusplus) || defined(c_plusplus)
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extern "C" {
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#endif
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typedef enum
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{
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UndefinedEndian,
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LSBEndian,
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MSBEndian
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} EndianType;
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typedef enum
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{
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UndefinedQuantumAlpha,
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AssociatedQuantumAlpha,
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DisassociatedQuantumAlpha
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} QuantumAlphaType;
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typedef enum
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{
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UndefinedQuantumFormat,
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FloatingPointQuantumFormat,
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SignedQuantumFormat,
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UnsignedQuantumFormat
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} QuantumFormatType;
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typedef enum
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{
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UndefinedQuantum,
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AlphaQuantum,
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BGRAQuantum,
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BGROQuantum,
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BGRQuantum,
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BlackQuantum,
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BlueQuantum,
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CbYCrAQuantum,
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CbYCrQuantum,
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CbYCrYQuantum,
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CMYKAQuantum,
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CMYKOQuantum,
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CMYKQuantum,
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CyanQuantum,
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GrayAlphaQuantum,
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GrayQuantum,
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GreenQuantum,
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IndexAlphaQuantum,
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IndexQuantum,
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MagentaQuantum,
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OpacityQuantum,
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RedQuantum,
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RGBAQuantum,
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RGBOQuantum,
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RGBPadQuantum,
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RGBQuantum,
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YellowQuantum
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} QuantumType;
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typedef struct _QuantumInfo
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QuantumInfo;
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static inline Quantum ClampToQuantum(const MagickRealType value)
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{
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#if defined(MAGICKCORE_HDRI_SUPPORT)
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return((Quantum) value);
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#else
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if (value <= 0.0f)
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return((Quantum) 0);
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if (value >= (MagickRealType) QuantumRange)
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return(QuantumRange);
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return((Quantum) (value+0.5f));
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#endif
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}
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#if (MAGICKCORE_QUANTUM_DEPTH == 8)
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static inline unsigned char ScaleQuantumToChar(const Quantum quantum)
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{
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#if !defined(MAGICKCORE_HDRI_SUPPORT)
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return((unsigned char) quantum);
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#else
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if (quantum <= 0.0)
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return(0);
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if (quantum >= 255.0)
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return(255);
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return((unsigned char) (quantum+0.5));
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#endif
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}
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#elif (MAGICKCORE_QUANTUM_DEPTH == 16)
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static inline unsigned char ScaleQuantumToChar(const Quantum quantum)
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{
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#if !defined(MAGICKCORE_HDRI_SUPPORT)
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return((unsigned char) (((quantum+128UL)-((quantum+128UL) >> 8)) >> 8));
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#else
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if (quantum <= 0.0)
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return(0);
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if ((quantum/257.0) >= 255.0)
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return(255);
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return((unsigned char) (quantum/257.0+0.5));
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#endif
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}
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#elif (MAGICKCORE_QUANTUM_DEPTH == 32)
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static inline unsigned char ScaleQuantumToChar(const Quantum quantum)
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{
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#if !defined(MAGICKCORE_HDRI_SUPPORT)
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return((unsigned char) ((quantum+MagickULLConstant(8421504))/
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MagickULLConstant(16843009)));
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#else
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if (quantum <= 0.0)
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return(0);
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if ((quantum/16843009.0) >= 255.0)
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return(255);
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return((unsigned char) (quantum/16843009.0+0.5));
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#endif
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}
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#elif (MAGICKCORE_QUANTUM_DEPTH == 64)
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static inline unsigned char ScaleQuantumToChar(const Quantum quantum)
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{
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#if !defined(MAGICKCORE_HDRI_SUPPORT)
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return((unsigned char) (quantum/72340172838076673.0+0.5));
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#else
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if (quantum <= 0.0)
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return(0);
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if ((quantum/72340172838076673.0) >= 255.0)
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return(255);
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return((unsigned char) (quantum/72340172838076673.0+0.5));
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#endif
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}
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#endif
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extern MagickExport EndianType
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GetQuantumEndian(const QuantumInfo *);
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extern MagickExport MagickBooleanType
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SetQuantumDepth(const Image *,QuantumInfo *,const size_t),
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SetQuantumEndian(const Image *,QuantumInfo *,const EndianType),
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SetQuantumFormat(const Image *,QuantumInfo *,const QuantumFormatType),
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SetQuantumPad(const Image *,QuantumInfo *,const size_t);
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extern MagickExport QuantumFormatType
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GetQuantumFormat(const QuantumInfo *);
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extern MagickExport QuantumInfo
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*AcquireQuantumInfo(const ImageInfo *,Image *),
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*DestroyQuantumInfo(QuantumInfo *);
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extern MagickExport QuantumType
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GetQuantumType(Image *,ExceptionInfo *);
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extern MagickExport size_t
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ExportQuantumPixels(const Image *,CacheView *,QuantumInfo *,const QuantumType,
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unsigned char *magick_restrict,ExceptionInfo *),
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GetQuantumExtent(const Image *,const QuantumInfo *,const QuantumType),
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ImportQuantumPixels(const Image *,CacheView *,QuantumInfo *,const QuantumType,
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const unsigned char *magick_restrict,ExceptionInfo *);
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extern MagickExport unsigned char
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*GetQuantumPixels(const QuantumInfo *);
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extern MagickExport void
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GetQuantumInfo(const ImageInfo *,QuantumInfo *),
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SetQuantumAlphaType(QuantumInfo *,const QuantumAlphaType),
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SetQuantumImageType(Image *,const QuantumType),
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SetQuantumMinIsWhite(QuantumInfo *,const MagickBooleanType),
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SetQuantumPack(QuantumInfo *,const MagickBooleanType),
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SetQuantumQuantum(QuantumInfo *,const size_t),
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SetQuantumScale(QuantumInfo *,const double);
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#if defined(__cplusplus) || defined(c_plusplus)
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}
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#endif
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#endif
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