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DEFINITIONS
This source file includes following definitions.
- RegisterPREVIEWImage
- UnregisterPREVIEWImage
- WritePreviewImage
/*
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% Write A Preview Image. %
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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. %
% %
% 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 %
% %
% 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/property.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/client.h"
#include "magick/constitute.h"
#include "magick/effect.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/image.h"
#include "magick/image-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/resize.h"
#include "magick/resource_.h"
#include "magick/static.h"
#include "magick/string_.h"
#include "magick/module.h"
#include "magick/transform.h"
#include "magick/utility.h"
/*
Forward declarations.
*/
static MagickBooleanType
WritePreviewImage(const ImageInfo *,Image *);
/*
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% R e g i s t e r P R E V I E W I m a g e %
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% RegisterPREVIEWImage() adds attributes for the Preview 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 RegisterPREVIEWImage method is:
%
% size_t RegisterPREVIEWImage(void)
%
*/
ModuleExport size_t RegisterPREVIEWImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("PREVIEW");
entry->encoder=(EncodeImageHandler *) WritePreviewImage;
entry->adjoin=MagickFalse;
entry->format_type=ImplicitFormatType;
entry->description=ConstantString(
"Show a preview an image enhancement, effect, or f/x");
entry->module=ConstantString("PREVIEW");
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
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% U n r e g i s t e r P R E V I E W I m a g e %
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% UnregisterPREVIEWImage() removes format registrations made by the
% PREVIEW module from the list of supported formats.
%
% The format of the UnregisterPREVIEWImage method is:
%
% UnregisterPREVIEWImage(void)
%
*/
ModuleExport void UnregisterPREVIEWImage(void)
{
(void) UnregisterMagickInfo("PREVIEW");
}
/*
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% W r i t e P R E V I E W I m a g e %
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% WritePreviewImage creates several tiles each with a varying
% stength of an image enhancement function (e.g. gamma). The image is written
% in the MIFF format.
%
% The format of the WritePreviewImage method is:
%
% MagickBooleanType WritePreviewImage(const ImageInfo *image_info,
% Image *image)
%
% A description of each parameter follows.
%
% o image_info: the image info.
%
% o image: The image.
%
*/
static MagickBooleanType WritePreviewImage(const ImageInfo *image_info,
Image *image)
{
Image
*preview_image;
ImageInfo
*write_info;
MagickBooleanType
status;
/*
Open output image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
preview_image=PreviewImage(image,image_info->preview_type,&image->exception);
if (preview_image == (Image *) NULL)
return(MagickFalse);
(void) CopyMagickString(preview_image->filename,image_info->filename,
MaxTextExtent);
write_info=CloneImageInfo(image_info);
(void) SetImageInfo(write_info,1,&image->exception);
if (LocaleCompare(write_info->magick,"PREVIEW") == 0)
(void) FormatLocaleString(preview_image->filename,MaxTextExtent,
"miff:%s",image_info->filename);
status=WriteImage(write_info,preview_image);
preview_image=DestroyImage(preview_image);
write_info=DestroyImageInfo(write_info);
return(status);
}