forked from openkylin/imagemagick
245 lines
9.5 KiB
C
245 lines
9.5 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% H H AAA L DDDD %
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% H H A A L D D %
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% HHHHH AAAAA L D D %
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% H H A A L D D %
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% H H A A LLLLL DDDD %
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% %
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% %
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% Create Identity Hald CLUT Image Format %
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% %
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% Software Design %
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% Cristy %
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% July 1992 %
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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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%
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*/
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/*
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Include declarations.
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*/
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#include "magick/studio.h"
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#include "magick/blob.h"
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#include "magick/blob-private.h"
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#include "magick/cache.h"
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#include "magick/colorspace.h"
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#include "magick/exception.h"
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#include "magick/exception-private.h"
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#include "magick/image.h"
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#include "magick/image-private.h"
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#include "magick/list.h"
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#include "magick/magick.h"
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#include "magick/memory_.h"
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#include "magick/module.h"
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#include "magick/monitor.h"
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#include "magick/monitor-private.h"
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#include "magick/pixel-accessor.h"
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#include "magick/quantum-private.h"
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#include "magick/resource_.h"
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#include "magick/static.h"
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#include "magick/string_.h"
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#include "magick/string-private.h"
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#include "magick/thread-private.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 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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% ReadHALDImage() creates a Hald 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 ReadHALDImage method is:
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%
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% Image *ReadHALDImage(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 *ReadHALDImage(const ImageInfo *image_info,
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ExceptionInfo *exception)
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{
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Image
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*image;
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MagickBooleanType
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status;
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size_t
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cube_size,
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level;
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ssize_t
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i,
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y;
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/*
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Create HALD color lookup table image.
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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);
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level=0;
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if (*image_info->filename != '\0')
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level=StringToUnsignedLong(image_info->filename);
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if (image_info->scene != 0)
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level=image_info->scene;
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if ((level < 2) || (level > 256))
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level=8;
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status=MagickTrue;
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cube_size=level*level;
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image->columns=(size_t) (level*cube_size);
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image->rows=(size_t) (level*cube_size);
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status=SetImageExtent(image,image->columns,image->rows);
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if (status == MagickFalse)
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{
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InheritException(exception,&image->exception);
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return(DestroyImageList(image));
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}
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for (y=0; y < (ssize_t) image->rows; y+=(ssize_t) level)
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{
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ssize_t
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blue,
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green,
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red;
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PixelPacket
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*magick_restrict q;
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if (status == MagickFalse)
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continue;
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q=QueueAuthenticPixels(image,0,y,image->columns,(size_t) level,exception);
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if (q == (PixelPacket *) NULL)
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{
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status=MagickFalse;
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continue;
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}
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blue=y/(ssize_t) level;
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for (green=0; green < (ssize_t) cube_size; green++)
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{
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for (red=0; red < (ssize_t) cube_size; red++)
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{
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SetPixelRed(q,ClampToQuantum((MagickRealType)
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(QuantumRange*red/(cube_size-1.0))));
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SetPixelGreen(q,ClampToQuantum((MagickRealType)
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(QuantumRange*green/(cube_size-1.0))));
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SetPixelBlue(q,ClampToQuantum((MagickRealType)
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(QuantumRange*blue/(cube_size-1.0))));
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SetPixelOpacity(q,OpaqueOpacity);
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q++;
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}
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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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(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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% RegisterHALDImage() 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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%
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% The format of the RegisterHALDImage method is:
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%
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% size_t RegisterHALDImage(void)
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%
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*/
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ModuleExport size_t RegisterHALDImage(void)
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{
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MagickInfo
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*entry;
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entry=SetMagickInfo("HALD");
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entry->decoder=(DecodeImageHandler *) ReadHALDImage;
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entry->adjoin=MagickFalse;
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entry->format_type=ImplicitFormatType;
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entry->raw=MagickTrue;
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entry->endian_support=MagickTrue;
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entry->description=ConstantString("Identity Hald color lookup table image");
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entry->magick_module=ConstantString("HALD");
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(void) RegisterMagickInfo(entry);
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return(MagickImageCoderSignature);
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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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% U n 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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% UnregisterHALDImage() removes format registrations made by the
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% HALD module from the list of supported formats.
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%
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% The format of the UnregisterHALDImage method is:
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%
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% UnregisterHALDImage(void)
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%
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*/
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ModuleExport void UnregisterHALDImage(void)
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{
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(void) UnregisterMagickInfo("HALD");
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}
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