forked from openkylin/imagemagick
245 lines
9.8 KiB
C
245 lines
9.8 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% M M AAA SSSSS K K %
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% MM MM A A SS K K %
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% M M M AAAAA SSS KKK %
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% M M A A SS K K %
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% M M A A SSSSS K K %
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% %
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% %
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% Write Mask File. %
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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/attribute.h"
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#include "magick/blob.h"
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#include "magick/blob-private.h"
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#include "magick/constitute.h"
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#include "magick/enhance.h"
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#include "magick/exception.h"
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#include "magick/exception-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/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/static.h"
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#include "magick/string_.h"
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#include "magick/module.h"
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/*
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Forward declarations.
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*/
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static MagickBooleanType
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WriteMASKImage(const ImageInfo *,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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% R e a d M A S K 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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% ReadMASKImage returns the image mask associated with the image.
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%
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% The format of the ReadMASKImage method is:
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%
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% Image *ReadMASKImage(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 *ReadMASKImage(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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ImageInfo
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*read_info;
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/*
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Initialize Image structure.
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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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read_info=CloneImageInfo(image_info);
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SetImageInfoBlob(read_info,(void *) NULL,0);
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(void) CopyMagickString(read_info->magick,"MIFF",MaxTextExtent);
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image=ReadImage(read_info,exception);
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read_info=DestroyImageInfo(read_info);
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if (image != (Image *) NULL)
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{
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MagickBooleanType
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status;
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status=GrayscaleImage(image,image->intensity);
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if (status == MagickFalse)
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image=DestroyImage(image);
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}
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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 M A S K 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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% RegisterMASKImage() adds attributes for the MASK image format to
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% the list of supported formats. The attributes include the image format
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% 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,
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% whether the format supports native in-memory I/O, and a brief
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% description of the format.
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%
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% The format of the RegisterMASKImage method is:
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%
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% size_t RegisterMASKImage(void)
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%
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*/
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ModuleExport size_t RegisterMASKImage(void)
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{
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MagickInfo
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*entry;
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entry=SetMagickInfo("MASK");
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entry->decoder=(DecodeImageHandler *) ReadMASKImage;
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entry->encoder=(EncodeImageHandler *) WriteMASKImage;
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entry->description=ConstantString("Image Clip Mask");
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entry->magick_module=ConstantString("MASK");
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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 M A S K 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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% UnregisterMASKImage() removes format registrations made by the
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% MASK module from the list of supported formats.
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%
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% The format of the UnregisterMASKImage method is:
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%
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% UnregisterMASKImage(void)
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%
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*/
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ModuleExport void UnregisterMASKImage(void)
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{
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(void) UnregisterMagickInfo("MASK");
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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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% W r i t e M A S K 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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% WriteMASKImage() writes an image mask to a file.
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%
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% The format of the WriteMASKImage method is:
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%
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% MagickBooleanType WriteMASKImage(const ImageInfo *image_info,
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% Image *image)
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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 image: The image.
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%
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*/
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static MagickBooleanType WriteMASKImage(const ImageInfo *image_info,
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Image *image)
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{
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Image
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*mask_image;
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ImageInfo
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*write_info;
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MagickBooleanType
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status;
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if (image->mask == (Image *) NULL)
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ThrowWriterException(CoderError,"ImageDoesNotHaveAMask");
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mask_image=CloneImage(image->mask,0,0,MagickTrue,&image->exception);
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if (mask_image == (Image *) NULL)
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return(MagickFalse);
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(void) SetImageType(mask_image,TrueColorType);
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(void) CopyMagickString(mask_image->filename,image->filename,MaxTextExtent);
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write_info=CloneImageInfo(image_info);
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*write_info->magick='\0';
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(void) SetImageInfo(write_info,1,&image->exception);
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if ((*write_info->magick == '\0') ||
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(LocaleCompare(write_info->magick,"MASK") == 0))
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(void) FormatLocaleString(mask_image->filename,MaxTextExtent,"miff:%s",
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write_info->filename);
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status=WriteImage(write_info,mask_image);
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mask_image=DestroyImage(mask_image);
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write_info=DestroyImageInfo(write_info);
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return(status);
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}
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