forked from openkylin/imagemagick
202 lines
8.4 KiB
C
202 lines
8.4 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% PPPP RRRR EEEEE V V IIIII EEEEE W W %
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% P P R R E V V I E W W %
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% PPPP RRRR EEE V V I EEE W W %
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% P R R E V V I E W W W %
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% P R R EEEEE V IIIII EEEEE W W %
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% %
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% %
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% Write A Preview Image. %
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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/property.h"
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#include "magick/blob.h"
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#include "magick/blob-private.h"
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#include "magick/client.h"
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#include "magick/constitute.h"
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#include "magick/effect.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/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/resize.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/module.h"
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#include "magick/transform.h"
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#include "magick/utility.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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WritePreviewImage(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 g i s t e r P R E V I E W 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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% RegisterPREVIEWImage() adds attributes for the Preview 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 RegisterPREVIEWImage method is:
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%
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% size_t RegisterPREVIEWImage(void)
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%
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*/
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ModuleExport size_t RegisterPREVIEWImage(void)
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{
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MagickInfo
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*entry;
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entry=SetMagickInfo("PREVIEW");
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entry->encoder=(EncodeImageHandler *) WritePreviewImage;
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entry->adjoin=MagickFalse;
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entry->format_type=ImplicitFormatType;
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entry->description=ConstantString(
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"Show a preview an image enhancement, effect, or f/x");
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entry->magick_module=ConstantString("PREVIEW");
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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 P R E V I E W 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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% UnregisterPREVIEWImage() removes format registrations made by the
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% PREVIEW module from the list of supported formats.
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%
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% The format of the UnregisterPREVIEWImage method is:
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%
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% UnregisterPREVIEWImage(void)
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%
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*/
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ModuleExport void UnregisterPREVIEWImage(void)
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{
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(void) UnregisterMagickInfo("PREVIEW");
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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 P R E V I E W 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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% WritePreviewImage creates several tiles each with a varying
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% stength of an image enhancement function (e.g. gamma). The image is written
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% in the MIFF format.
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%
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% The format of the WritePreviewImage method is:
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%
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% MagickBooleanType WritePreviewImage(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 WritePreviewImage(const ImageInfo *image_info,
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Image *image)
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{
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Image
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*preview_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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/*
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Open output image file.
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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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assert(image != (Image *) NULL);
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assert(image->signature == MagickCoreSignature);
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if (image->debug != MagickFalse)
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
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preview_image=PreviewImage(image,image_info->preview_type,&image->exception);
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if (preview_image == (Image *) NULL)
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return(MagickFalse);
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(void) CopyMagickString(preview_image->filename,image_info->filename,
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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,"PREVIEW") == 0))
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(void) FormatLocaleString(preview_image->filename,MaxTextExtent,
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"miff:%s",image_info->filename);
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status=WriteImage(write_info,preview_image);
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preview_image=DestroyImage(preview_image);
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write_info=DestroyImageInfo(write_info);
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return(status);
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}
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