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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% CCCC U U BBBB EEEEE %
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% C U U B B E %
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% C U U BBBB EEE %
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% C U U B B E %
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% CCCC UUU BBBB EEEEE %
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% %
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% %
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% Cube LUT Image Format %
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% %
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% Software Design %
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% Cristy %
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% July 2018 %
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% %
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% %
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% Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
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% dedicated to making software imaging solutions freely available. %
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% %
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% You may not use this file except in compliance with the License. You may %
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% obtain a copy of the License at %
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% %
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% https://imagemagick.org/script/license.php %
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% %
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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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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% See Cube LUT specification 1.0 @
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% https://wwwimages2.adobe.com/content/dam/acom/en/products/speedgrade/cc/pdfs/cube-lut-specification-1.0.pdf
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%
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*/
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/*
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Include declarations.
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*/
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#include "MagickCore/studio.h"
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#include "MagickCore/blob.h"
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#include "MagickCore/blob-private.h"
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#include "MagickCore/cache.h"
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#include "MagickCore/colorspace.h"
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#include "MagickCore/exception.h"
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#include "MagickCore/exception-private.h"
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#include "MagickCore/image.h"
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#include "MagickCore/image-private.h"
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#include "MagickCore/list.h"
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#include "MagickCore/magick.h"
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#include "MagickCore/memory_.h"
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#include "MagickCore/module.h"
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#include "MagickCore/monitor.h"
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#include "MagickCore/monitor-private.h"
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#include "MagickCore/pixel-accessor.h"
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#include "MagickCore/property.h"
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#include "MagickCore/quantum-private.h"
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#include "MagickCore/resource_.h"
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#include "MagickCore/static.h"
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#include "MagickCore/string_.h"
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#include "MagickCore/string-private.h"
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#include "MagickCore/thread-private.h"
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#include "MagickCore/token.h"
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% R e a d C U B E I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% ReadCUBEImage() creates a Cube color lookup table image and returns it. It
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% allocates the memory necessary for the new Image structure and returns a
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% pointer to the new image.
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%
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% The format of the ReadCUBEImage method is:
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%
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% Image *ReadCUBEImage(const ImageInfo *image_info,
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% ExceptionInfo *exception)
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%
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% A description of each parameter follows:
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%
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% o image_info: the image info.
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%
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% o exception: return any errors or warnings in this structure.
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%
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*/
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static Image *ReadCUBEImage(const ImageInfo *image_info,
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ExceptionInfo *exception)
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{
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#define FlattenCube(level,b,g,r) \
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((ssize_t) ((b)*(level)*(level)+(g)*(level)+(r)))
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typedef struct _CubePixel
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{
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float
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r,
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g,
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b;
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} CubePixel;
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char
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*buffer,
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token[MagickPathExtent],
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value[MagickPathExtent];
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CubePixel
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*cube;
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Image
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*image;
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MagickBooleanType
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status;
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MemoryInfo
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*cube_info;
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char
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*p;
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size_t
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cube_level,
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hald_level;
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ssize_t
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b,
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i,
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n;
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/*
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Read CUBE color lookup table.
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*/
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assert(image_info != (const ImageInfo *) NULL);
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assert(image_info->signature == MagickCoreSignature);
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if (image_info->debug != MagickFalse)
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
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image_info->filename);
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assert(exception != (ExceptionInfo *) NULL);
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assert(exception->signature == MagickCoreSignature);
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image=AcquireImage(image_info,exception);
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status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
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if (status == MagickFalse)
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{
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image=DestroyImageList(image);
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return((Image *) NULL);
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}
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cube_level=0;
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cube_info=(MemoryInfo *) NULL;
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cube=(CubePixel *) NULL;
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n=0;
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buffer=AcquireString("");
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*buffer='\0';
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p=buffer;
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while (ReadBlobString(image,p) != (char *) NULL)
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{
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const char
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*q;
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q=p;
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(void) GetNextToken(q,&q,MagickPathExtent,token);
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if ((*token == '#') || (*token == '\0'))
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continue;
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if (((LocaleCompare(token,"LUT_1D_SIZE") == 0) ||
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(LocaleCompare(token,"LUT_3D_SIZE") == 0)) &&
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(cube_info == (MemoryInfo *) NULL))
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{
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(void) GetNextToken(q,&q,MagickPathExtent,value);
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cube_level=(size_t) StringToLong(value);
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if (LocaleCompare(token,"LUT_1D_SIZE") == 0)
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cube_level=(size_t) ceil(pow((double) cube_level,1.0/3.0));
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if ((cube_level < 2) || (cube_level > 256))
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{
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buffer=DestroyString(buffer);
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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}
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cube_info=AcquireVirtualMemory(cube_level*cube_level,cube_level*
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sizeof(*cube));
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if (cube_info == (MemoryInfo *) NULL)
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{
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buffer=DestroyString(buffer);
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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}
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cube=(CubePixel *) GetVirtualMemoryBlob(cube_info);
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(void) memset(cube,0,cube_level*cube_level*cube_level*sizeof(*cube));
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}
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else
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if (LocaleCompare(token,"TITLE ") == 0)
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{
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(void) GetNextToken(q,&q,MagickPathExtent,value);
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(void) SetImageProperty(image,"title",value,exception);
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}
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else
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if (cube_level != 0)
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{
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char
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*r;
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if (n >= (ssize_t) (cube_level*cube_level*cube_level))
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break;
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r=buffer;
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cube[n].r=StringToDouble(r,&r);
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cube[n].g=StringToDouble(r,&r);
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cube[n].b=StringToDouble(r,&r);
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n++;
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}
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else
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if (('+' < *buffer) && (*buffer < ':'))
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break;
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}
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buffer=DestroyString(buffer);
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if (cube_level == 0)
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{
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if (cube_info != (MemoryInfo *) NULL)
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cube_info=RelinquishVirtualMemory(cube_info);
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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}
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/*
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Convert CUBE image to HALD.
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*/
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status=MagickTrue;
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hald_level=image_info->scene;
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if ((hald_level < 2) || (hald_level > 256))
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hald_level=8;
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image->columns=(size_t) (hald_level*hald_level*hald_level);
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image->rows=(size_t) (hald_level*hald_level*hald_level);
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status=SetImageExtent(image,image->columns,image->rows,exception);
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if (status == MagickFalse)
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{
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cube_info=RelinquishVirtualMemory(cube_info);
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return(DestroyImageList(image));
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}
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for (b=0; b < (ssize_t) (hald_level*hald_level); b++)
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{
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ssize_t
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g;
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if (status == MagickFalse)
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continue;
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for (g=0; g < (ssize_t) (hald_level*hald_level); g++)
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{
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Quantum
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*magick_restrict q;
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ssize_t
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r;
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if (status == MagickFalse)
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continue;
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q=QueueAuthenticPixels(image,(g % hald_level)*(hald_level*hald_level),
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(b*hald_level)+((g/hald_level) % (hald_level*hald_level)),hald_level*
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hald_level,1,exception);
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if (q == (Quantum *) NULL)
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{
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status=MagickFalse;
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continue;
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}
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for (r=0; r < (ssize_t) (hald_level*hald_level); r++)
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{
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CubePixel
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index,
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next,
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offset,
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scale;
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offset.r=(PerceptibleReciprocal((double) (hald_level*hald_level)-1.0)*
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r)*(cube_level-1.0);
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index.r=floor(offset.r);
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scale.r=offset.r-index.r;
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next.r=index.r+1;
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if ((size_t) index.r == (cube_level-1))
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next.r=index.r;
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offset.g=(PerceptibleReciprocal(((double) hald_level*hald_level)-1.0)*
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g)*(cube_level-1.0);
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index.g=floor(offset.g);
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scale.g=offset.g-index.g;
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next.g=index.g+1;
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if ((size_t) index.g == (cube_level-1))
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next.g=index.g;
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offset.b=(PerceptibleReciprocal(((double) hald_level*hald_level)-1.0)*
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b)*(cube_level-1.0);
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index.b=floor(offset.b);
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scale.b=offset.b-index.b;
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next.b=index.b+1;
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if ((size_t) index.b == (cube_level-1))
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next.b=index.b;
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SetPixelRed(image,ClampToQuantum(QuantumRange*(
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cube[FlattenCube(cube_level,index.b,index.g,index.r)].r+scale.r*(
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cube[FlattenCube(cube_level,index.b,index.g,next.r)].r-
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cube[FlattenCube(cube_level,index.b,index.g,index.r)].r))),q);
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SetPixelGreen(image,ClampToQuantum(QuantumRange*(
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cube[FlattenCube(cube_level,index.b,index.g,index.r)].g+scale.g*(
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cube[FlattenCube(cube_level,index.b,next.g,index.r)].g-
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cube[FlattenCube(cube_level,index.b,index.g,index.r)].g))),q);
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SetPixelBlue(image,ClampToQuantum(QuantumRange*(
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cube[FlattenCube(cube_level,index.b,index.g,index.r)].b+scale.b*(
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cube[FlattenCube(cube_level,next.b,index.g,index.r)].b-
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cube[FlattenCube(cube_level,index.b,index.g,index.r)].b))),q);
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q+=GetPixelChannels(image);
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}
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if (SyncAuthenticPixels(image,exception) == MagickFalse)
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status=MagickFalse;
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}
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}
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cube_info=RelinquishVirtualMemory(cube_info);
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(void) CloseBlob(image);
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if (status == MagickFalse)
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return(DestroyImageList(image));
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if (image_info->scene != 0)
|
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for (i=0; i < (ssize_t) image_info->scene; i++)
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AppendImageToList(&image,CloneImage(image,0,0,MagickTrue,exception));
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return(GetFirstImageInList(image));
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
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% %
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|
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% %
|
|
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% %
|
|
|
% R e g i s t e r H A L D I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% RegisterCUBEImage() adds attributes for the Hald color lookup table image
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% format to the list of supported formats. The attributes include the image
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% format tag, a method to read and/or write the format, whether the format
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|
% supports the saving of more than one frame to the same file or blob, whether
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% the format supports native in-memory I/O, and a brief description of the
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|
% format.
|
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|
%
|
|
|
% The format of the RegisterCUBEImage method is:
|
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|
%
|
|
|
% size_t RegisterCUBEImage(void)
|
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|
%
|
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|
*/
|
|
|
ModuleExport size_t RegisterCUBEImage(void)
|
|
|
{
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|
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MagickInfo
|
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|
*entry;
|
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|
|
|
entry=AcquireMagickInfo("CUBE","CUBE","Cube LUT");
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|
entry->decoder=(DecodeImageHandler *) ReadCUBEImage;
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|
entry->flags^=CoderAdjoinFlag;
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|
entry->format_type=ImplicitFormatType;
|
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|
entry->flags|=CoderRawSupportFlag;
|
|
|
entry->flags|=CoderEndianSupportFlag;
|
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|
(void) RegisterMagickInfo(entry);
|
|
|
return(MagickImageCoderSignature);
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|
}
|
|
|
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
% U n r e g i s t e r H A L D I m a g e %
|
|
|
% %
|
|
|
% %
|
|
|
% %
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
%
|
|
|
% UnregisterCUBEImage() removes format registrations made by the
|
|
|
% CUBE module from the list of supported formats.
|
|
|
%
|
|
|
% The format of the UnregisterCUBEImage method is:
|
|
|
%
|
|
|
% UnregisterCUBEImage(void)
|
|
|
%
|
|
|
*/
|
|
|
ModuleExport void UnregisterCUBEImage(void)
|
|
|
{
|
|
|
(void) UnregisterMagickInfo("CUBE");
|
|
|
}
|
