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DEFINITIONS
This source file includes following definitions.
- ReadMASKImage
- RegisterMASKImage
- UnregisterMASKImage
- WriteMASKImage
/*
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% Write Mask File. %
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% Software Design %
% John Cristy %
% July 1992 %
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% Copyright 1999-2013 ImageMagick Studio LLC, a non-profit organization %
% dedicated to making software imaging solutions freely available. %
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% You may not use this file except in compliance with the License. You may %
% obtain a copy of the License at %
% %
% http://www.imagemagick.org/script/license.php %
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% 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. %
% %
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/*
Include declarations.
*/
#include "magick/studio.h"
#include "magick/attribute.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/constitute.h"
#include "magick/enhance.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/list.h"
#include "magick/magick.h"
#include "magick/memory_.h"
#include "magick/monitor.h"
#include "magick/monitor-private.h"
#include "magick/pixel-accessor.h"
#include "magick/quantum-private.h"
#include "magick/static.h"
#include "magick/string_.h"
#include "magick/module.h"
/*
Forward declarations.
*/
static MagickBooleanType
WriteMASKImage(const ImageInfo *,Image *);
/*
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% R e a d M A S K I m a g e %
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% ReadMASKImage returns the image mask associated with the image.
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% The format of the ReadMASKImage method is:
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% Image *ReadMASKImage(const ImageInfo *image_info,
% ExceptionInfo *exception)
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% A description of each parameter follows:
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% o image_info: the image info.
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% o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadMASKImage(const ImageInfo *image_info,
ExceptionInfo *exception)
{
Image
*image;
ImageInfo
*read_info;
/*
Initialize Image structure.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickSignature);
read_info=CloneImageInfo(image_info);
SetImageInfoBlob(read_info,(void *) NULL,0);
*read_info->magick='\0';
image=ReadImage(read_info,exception);
read_info=DestroyImageInfo(read_info);
if (image != (Image *) NULL)
{
MagickBooleanType
status;
status=GrayscaleImage(image,image->intensity);
if (status == MagickFalse)
image=DestroyImage(image);
}
return(GetFirstImageInList(image));
}
/*
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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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% RegisterMASKImage() adds attributes for the MASK image format to
% the list of supported formats. The attributes include the image format
% tag, a method to read and/or write the format, whether the format
% supports the saving of more than one frame to the same file or blob,
% whether the format supports native in-memory I/O, and a brief
% description of the format.
%
% The format of the RegisterMASKImage method is:
%
% size_t RegisterMASKImage(void)
%
*/
ModuleExport size_t RegisterMASKImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("MASK");
entry->decoder=(DecodeImageHandler *) ReadMASKImage;
entry->encoder=(EncodeImageHandler *) WriteMASKImage;
entry->description=ConstantString("Image Clip Mask");
entry->module=ConstantString("MASK");
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
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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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% UnregisterMASKImage() removes format registrations made by the
% MASK module from the list of supported formats.
%
% The format of the UnregisterMASKImage method is:
%
% UnregisterMASKImage(void)
%
*/
ModuleExport void UnregisterMASKImage(void)
{
(void) UnregisterMagickInfo("MASK");
}
/*
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% W r i t e M A S K I m a g e %
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% WriteMASKImage() writes an image mask to a file.
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% The format of the WriteMASKImage method is:
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% MagickBooleanType WriteMASKImage(const ImageInfo *image_info,
% Image *image)
%
% A description of each parameter follows.
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% o image_info: the image info.
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% o image: The image.
%
*/
static MagickBooleanType WriteMASKImage(const ImageInfo *image_info,
Image *image)
{
Image
*mask_image;
ImageInfo
*write_info;
MagickBooleanType
status;
if (image->mask == (Image *) NULL)
ThrowWriterException(CoderError,"ImageDoesNotHaveAMask");
mask_image=CloneImage(image->mask,0,0,MagickTrue,&image->exception);
if (mask_image == (Image *) NULL)
return(MagickFalse);
(void) SetImageType(mask_image,TrueColorType);
(void) CopyMagickString(mask_image->filename,image->filename,MaxTextExtent);
write_info=CloneImageInfo(image_info);
(void) SetImageInfo(write_info,1,&image->exception);
if (LocaleCompare(write_info->magick,"MASK") == 0)
(void) FormatLocaleString(mask_image->filename,MaxTextExtent,"miff:%s",
write_info->filename);
status=WriteImage(write_info,mask_image);
mask_image=DestroyImage(mask_image);
write_info=DestroyImageInfo(write_info);
return(status);
}