Edit File: quantum.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 quantum inline methods. */ #ifndef MAGICKCORE_QUANTUM_H #define MAGICKCORE_QUANTUM_H #include <float.h> #include "magick/image.h" #include "magick/semaphore.h" #if defined(__cplusplus) || defined(c_plusplus) extern "C" { #endif #define RoundToQuantum(quantum) ClampToQuantum(quantum) typedef enum { UndefinedEndian, LSBEndian, MSBEndian } EndianType; typedef enum { UndefinedQuantumAlpha, AssociatedQuantumAlpha, DisassociatedQuantumAlpha } QuantumAlphaType; typedef enum { UndefinedQuantumFormat, FloatingPointQuantumFormat, SignedQuantumFormat, UnsignedQuantumFormat } QuantumFormatType; typedef enum { UndefinedQuantum, AlphaQuantum, BlackQuantum, BlueQuantum, CMYKAQuantum, CMYKQuantum, CyanQuantum, GrayAlphaQuantum, GrayQuantum, GreenQuantum, IndexAlphaQuantum, IndexQuantum, MagentaQuantum, OpacityQuantum, RedQuantum, RGBAQuantum, BGRAQuantum, RGBOQuantum, RGBQuantum, YellowQuantum, GrayPadQuantum, /* deprecated */ RGBPadQuantum, CbYCrYQuantum, CbYCrQuantum, CbYCrAQuantum, CMYKOQuantum, BGRQuantum, BGROQuantum } QuantumType; typedef struct _QuantumInfo QuantumInfo; static inline Quantum ClampToQuantum(const MagickRealType quantum) { #if defined(MAGICKCORE_HDRI_SUPPORT) return((Quantum) quantum); #else if ((IsNaN(quantum) != 0) || (quantum <= 0.0)) return((Quantum) 0); if (quantum >= (MagickRealType) QuantumRange) return(QuantumRange); return((Quantum) (quantum+0.5)); #endif } #if (MAGICKCORE_QUANTUM_DEPTH == 8) static inline unsigned char ScaleQuantumToChar(const Quantum quantum) { #if !defined(MAGICKCORE_HDRI_SUPPORT) return((unsigned char) quantum); #else if ((IsNaN(quantum) != 0) || (quantum <= 0.0f)) return(0); if (quantum >= 255.0) return(255); return((unsigned char) (quantum+0.5f)); #endif } #elif (MAGICKCORE_QUANTUM_DEPTH == 16) static inline unsigned char ScaleQuantumToChar(const Quantum quantum) { #if !defined(MAGICKCORE_HDRI_SUPPORT) return((unsigned char) (((quantum+128UL)-((quantum+128UL) >> 8)) >> 8)); #else if ((IsNaN(quantum) != 0) || (quantum <= 0.0f)) return(0); if ((quantum/257.0f) >= 255.0f) return(255); return((unsigned char) (quantum/257.0f+0.5f)); #endif } #elif (MAGICKCORE_QUANTUM_DEPTH == 32) static inline unsigned char ScaleQuantumToChar(const Quantum quantum) { #if !defined(MAGICKCORE_HDRI_SUPPORT) return((unsigned char) ((quantum+MagickULLConstant(8421504))/ MagickULLConstant(16843009))); #else if ((IsNaN(quantum) != 0) || (quantum <= 0.0)) return(0); if ((quantum/16843009.0) >= 255.0) return(255); return((unsigned char) (quantum/16843009.0+0.5)); #endif } #elif (MAGICKCORE_QUANTUM_DEPTH == 64) static inline unsigned char ScaleQuantumToChar(const Quantum quantum) { #if !defined(MAGICKCORE_HDRI_SUPPORT) return((unsigned char) (quantum/72340172838076673.0+0.5)); #else if ((IsNaN(quantum) != 0) || (quantum <= 0.0)) return(0); if ((quantum/72340172838076673.0) >= 255.0) return(255); return((unsigned char) (quantum/72340172838076673.0+0.5)); #endif } #endif extern MagickExport EndianType GetQuantumEndian(const QuantumInfo *); extern MagickExport MagickBooleanType SetQuantumDepth(const Image *,QuantumInfo *,const size_t), SetQuantumEndian(const Image *,QuantumInfo *,const EndianType), SetQuantumFormat(const Image *,QuantumInfo *,const QuantumFormatType), SetQuantumPad(const Image *,QuantumInfo *,const size_t); extern MagickExport QuantumFormatType GetQuantumFormat(const QuantumInfo *); extern MagickExport QuantumInfo *AcquireQuantumInfo(const ImageInfo *,Image *), *DestroyQuantumInfo(QuantumInfo *); extern MagickExport QuantumType GetQuantumType(Image *,ExceptionInfo *); extern MagickExport size_t ExportQuantumPixels(const Image *,const CacheView *,const QuantumInfo *, const QuantumType,unsigned char *magick_restrict,ExceptionInfo *), GetQuantumExtent(const Image *,const QuantumInfo *,const QuantumType), ImportQuantumPixels(Image *,CacheView *,const QuantumInfo *,const QuantumType, const unsigned char *magick_restrict,ExceptionInfo *); extern MagickExport unsigned char *GetQuantumPixels(const QuantumInfo *); extern MagickExport void GetQuantumInfo(const ImageInfo *,QuantumInfo *), SetQuantumAlphaType(QuantumInfo *,const QuantumAlphaType), SetQuantumImageType(Image *,const QuantumType), SetQuantumMinIsWhite(QuantumInfo *,const MagickBooleanType), SetQuantumPack(QuantumInfo *,const MagickBooleanType), SetQuantumQuantum(QuantumInfo *,const size_t), SetQuantumScale(QuantumInfo *,const double); #if defined(__cplusplus) || defined(c_plusplus) } #endif #endif