mirror of
https://github.com/ImageMagick/ImageMagick.git
synced 2026-05-25 11:24:54 +02:00
Dirk Lemstra
338 lines
12 KiB
C
338 lines
12 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% SSSSS TTTTT RRRR IIIII M M GGGG %
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% SS T R R I MM MM G %
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% SSS T RRRR I M M M G GG %
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% SS T R R I M M G G %
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% SSSSS T R R IIIII M M GGG %
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% %
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% %
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% String to Image and Image to Strings %
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% %
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% Software Design %
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% Cristy %
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% March 2022 %
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% %
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% %
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% Copyright @ 1999 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/license/ %
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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 "MagickCore/studio.h"
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#include "MagickCore/attribute.h"
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#include "MagickCore/blob.h"
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#include "MagickCore/blob-private.h"
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#include "MagickCore/cache.h"
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#include "MagickCore/color-private.h"
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#include "MagickCore/colormap.h"
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#include "MagickCore/colorspace.h"
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#include "MagickCore/colorspace-private.h"
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#include "MagickCore/exception.h"
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#include "MagickCore/exception-private.h"
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#include "MagickCore/image.h"
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#include "MagickCore/image-private.h"
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#include "MagickCore/list.h"
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#include "MagickCore/magick.h"
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#include "MagickCore/memory_.h"
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#include "MagickCore/monitor.h"
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#include "MagickCore/monitor-private.h"
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#include "MagickCore/property.h"
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#include "MagickCore/quantum.h"
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#include "MagickCore/quantum-private.h"
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#include "MagickCore/static.h"
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#include "MagickCore/string_.h"
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#include "MagickCore/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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WriteSTRIMGImage(const ImageInfo *,Image *,ExceptionInfo *);
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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 S T R I M G 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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% ReadSTRIMGImage() encodes the filename as an image. It allocates the
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% memory necessary for the new Image structure and returns a pointer to the
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% new image.
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%
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% The format of the ReadSTRIMGImage method is:
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%
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% Image *ReadSTRIMGImage(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 *ReadSTRIMGImage(const ImageInfo *image_info,
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ExceptionInfo *exception)
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{
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char
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*string;
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Image
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*image;
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MagickBooleanType
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status;
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Quantum
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*q;
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ssize_t
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x;
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/*
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Open 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(exception != (ExceptionInfo *) NULL);
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assert(exception->signature == MagickCoreSignature);
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if (IsEventLogging() != MagickFalse)
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
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image_info->filename);
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image=AcquireImage(image_info,exception);
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string=InterpretImageProperties((ImageInfo *) image_info,image,
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image_info->filename,exception);
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if (string == (char *) NULL)
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return(DestroyImageList(image));
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image->depth=8;
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image->colorspace=GRAYColorspace;
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image->columns=strlen(string);
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image->rows=1;
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if (image_info->ping != MagickFalse)
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{
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string=DestroyString(string);
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(void) CloseBlob(image);
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return(GetFirstImageInList(image));
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}
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status=SetImageExtent(image,image->columns,image->rows,exception);
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if (status == MagickFalse)
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{
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string=DestroyString(string);
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(void) CloseBlob(image);
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return(DestroyImageList(image));
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}
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/*
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Convert string to an image.
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*/
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q=QueueAuthenticPixels(image,0,0,image->columns,1,exception);
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if (q == (Quantum *) NULL)
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{
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string=DestroyString(string);
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(void) CloseBlob(image);
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return(DestroyImageList(image));
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}
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for (x=0; x < (ssize_t) image->columns; x++)
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q[x]=ScaleCharToQuantum((unsigned char) string[x]);
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string=DestroyString(string);
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if (SyncAuthenticPixels(image,exception) == MagickFalse)
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{
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(void) CloseBlob(image);
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return(DestroyImageList(image));
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}
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if (CloseBlob(image) == MagickFalse)
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status=MagickFalse;
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if (status == MagickFalse)
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return(DestroyImageList(image));
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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 S T R I M G 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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% RegisterSTRIMGImage() adds attributes for the STRIMG 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 RegisterSTRIMGImage method is:
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%
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% size_t RegisterSTRIMGImage(void)
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%
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*/
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ModuleExport size_t RegisterSTRIMGImage(void)
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{
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MagickInfo
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*entry;
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entry=AcquireMagickInfo("STRIMG","STRIMG","String to image and back");
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entry->decoder=(DecodeImageHandler *) ReadSTRIMGImage;
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entry->encoder=(EncodeImageHandler *) WriteSTRIMGImage;
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entry->flags|=CoderRawSupportFlag;
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entry->flags^=CoderAdjoinFlag;
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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 S T R I M G 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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% UnregisterSTRIMGImage() removes format registrations made by the
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% STRIMG module from the list of supported formats.
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%
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% The format of the UnregisterSTRIMGImage method is:
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%
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% UnregisterSTRIMGImage(void)
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%
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*/
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ModuleExport void UnregisterSTRIMGImage(void)
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{
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(void) UnregisterMagickInfo("STRIMG");
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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 S T R I M G 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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% WriteSTRIMGImage() writes an image as a string.
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%
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% The format of the WriteSTRIMGImage method is:
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%
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% MagickBooleanType WriteSTRIMGImage(const ImageInfo *image_info,
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% Image *image,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 image: The image.
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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 MagickBooleanType WriteSTRIMGImage(const ImageInfo *image_info,
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Image *image,ExceptionInfo *exception)
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{
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MagickBooleanType
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status;
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QuantumInfo
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*quantum_info;
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ssize_t
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y;
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unsigned char
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*pixels;
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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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assert(exception != (ExceptionInfo *) NULL);
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assert(exception->signature == MagickCoreSignature);
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if (IsEventLogging() != MagickFalse)
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
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status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
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if (status == MagickFalse)
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return(status);
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/*
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Convert image to a string.
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*/
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quantum_info=AcquireQuantumInfo(image_info,image);
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if (quantum_info == (QuantumInfo *) NULL)
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ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
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if (SetQuantumDepth(image,quantum_info,8) == MagickFalse)
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{
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quantum_info=DestroyQuantumInfo(quantum_info);
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ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
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}
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pixels=(unsigned char *) GetQuantumPixels(quantum_info);
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for (y=0; y < (ssize_t) image->rows; y++)
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{
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const Quantum
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*p;
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size_t
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length;
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ssize_t
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count;
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p=GetVirtualPixels(image,0,y,image->columns,1,exception);
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if (p == (const Quantum *) NULL)
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break;
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length=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info,
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GrayQuantum,pixels,exception);
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count=WriteBlob(image,length,pixels);
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if (count != (ssize_t) length)
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break;
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if (image->previous == (Image *) NULL)
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{
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status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
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image->rows);
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if (status == MagickFalse)
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break;
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}
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}
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quantum_info=DestroyQuantumInfo(quantum_info);
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if (y < (ssize_t) image->rows)
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ThrowWriterException(CorruptImageError,"UnableToWriteImageData");
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if (CloseBlob(image) == MagickFalse)
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status=MagickFalse;
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return(status);
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}
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