mirror of
https://github.com/ImageMagick/ImageMagick.git
synced 2026-05-25 11:24:54 +02:00
Dirk Lemstra
515 lines
18 KiB
C
515 lines
18 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% DDDD M M RRRR %
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% D D MM MM R R %
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% D D M M M RRRR %
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% D D M M R R %
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% DDDD M M R R %
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% %
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% %
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% Get or put content to a Digital Media Repository. %
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% %
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% Software Design %
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% Cristy %
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% May 2023 %
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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/blob.h"
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#include "MagickCore/blob-private.h"
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#include "MagickCore/client.h"
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#include "MagickCore/colormap.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/pixel-accessor.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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#include "MagickCore/utility.h"
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#include "MagickCore/xwindow-private.h"
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#if defined(MAGICKCORE_DMR_DELEGATE)
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#include <MagickCache/MagickCache.h>
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#endif
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#if defined(MAGICKCORE_DMR_DELEGATE)
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/*
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Forward declarations.
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*/
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static MagickBooleanType
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WriteDMRImage(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 D M R 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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% ReadDMRImage() reads an image from a digital media repository and returns it.
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% It allocates the memory necessary for the new Image structure and returns a
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% pointer to the new image.
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%
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% The format of the ReadDMRImage method is:
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%
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% Image *ReadDMRImage(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 *ReadDMRImage(const ImageInfo *image_info,ExceptionInfo *exception)
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{
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#define DestroyDMRResources() \
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{ \
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if (cache != (MagickCache *) NULL) \
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cache=DestroyMagickCache(cache); \
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if (message != (char *) NULL) \
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message=DestroyString(message); \
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if (passkey != (StringInfo *) NULL) \
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passkey=DestroyStringInfo(passkey); \
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if (passphrase != (StringInfo *) NULL) \
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passphrase=DestroyStringInfo(passphrase); \
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if (path != (char *) NULL) \
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path=DestroyString(path); \
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if (resource != (MagickCacheResource *) NULL) \
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resource=DestroyMagickCacheResource(resource); \
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}
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#define ThrowDMRReadException() \
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{ \
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DestroyDMRResources(); \
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if (image != (Image *) NULL) \
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image=DestroyImageList(image); \
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return(image); \
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}
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char
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*message = (char *) NULL,
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*path = (char *) NULL;
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const char
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*option;
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Image
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*image = (Image *) NULL;
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MagickBooleanType
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status;
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MagickCache
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*cache = (MagickCache *) NULL;
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MagickCacheResource
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*resource = (MagickCacheResource *) NULL;
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MagickCacheResourceType
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type;
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StringInfo
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*passkey = (StringInfo *) NULL,
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*passphrase = (StringInfo *) NULL;
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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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option=GetImageOption(image_info,"dmr:path");
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if (option != (const char *) NULL)
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path=ConstantString(option);
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option=GetImageOption(image_info,"dmr:passkey");
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if (option != (const char *) NULL)
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{
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passkey=FileToStringInfo(option,~0UL,exception);
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if (passkey == (StringInfo *) NULL)
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{
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message=GetExceptionMessage(errno);
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(void) ThrowMagickException(exception,GetMagickModule(),OptionError,
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"unable to read passkey","`%s': %s",option,message);
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ThrowDMRReadException();
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}
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}
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option=GetImageOption(image_info,"dmr:passphrase");
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if (option != (const char *) NULL)
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{
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passphrase=FileToStringInfo(option,~0UL,exception);
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if (passphrase == (StringInfo *) NULL)
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{
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message=GetExceptionMessage(errno);
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(void) ThrowMagickException(exception,GetMagickModule(),OptionError,
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"unable to read passphrase","`%s': %s",option,message);
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ThrowDMRReadException();
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}
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}
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cache=AcquireMagickCache(path,passkey);
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if (cache == (MagickCache *) NULL)
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{
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message=GetExceptionMessage(errno);
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(void) ThrowMagickException(exception,GetMagickModule(),OptionError,
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"unable to open digital media repository","`%s': %s",path,message);
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ThrowDMRReadException();
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}
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resource=AcquireMagickCacheResource(cache,image_info->filename);
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type=GetMagickCacheResourceType(resource);
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image=(Image *) NULL;
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switch (type)
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{
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case ImageResourceType:
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{
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image=GetMagickCacheResourceImage(cache,resource,(const char *) NULL);
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if (image != (Image *) NULL)
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image=CloneImageList(image,exception);
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break;
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}
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case BlobResourceType:
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{
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ImageInfo
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*read_info;
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void *blob = GetMagickCacheResourceBlob(cache,resource);
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if (blob == (void *) NULL)
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break;
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read_info=AcquireImageInfo();
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image=BlobToImage(read_info,blob,GetMagickCacheResourceExtent(
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resource),exception);
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read_info=DestroyImageInfo(read_info);
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break;
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}
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case MetaResourceType:
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{
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const char *meta = GetMagickCacheResourceMeta(cache,resource);
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if (meta == (char *) NULL)
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break;
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image=AcquireImage(image_info,exception);
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(void) SetImageExtent(image,1,1,exception);
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(void) SetImageBackgroundColor(image,exception);
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(void) SetImageProperty(image,"dmr:meta",meta,exception);
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break;
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}
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default:
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{
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(void) ThrowMagickException(exception,GetMagickModule(),OptionError,
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"resource type not supported","`%s'",image_info->filename);
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ThrowDMRReadException();
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}
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}
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if (image == (Image *) NULL)
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{
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(void) ThrowMagickException(exception,GetMagickModule(),OptionError,
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"no such resource","`%s'",image_info->filename);
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ThrowDMRReadException();
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}
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if (passphrase != (StringInfo *) NULL)
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{
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status=PasskeyDecipherImage(image,passphrase,exception);
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if (status == MagickFalse)
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ThrowDMRReadException();
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}
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DestroyDMRResources();
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return(image);
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}
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#endif
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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 D M R 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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% RegisterDMRImage() adds attributes for the Magick Cache repository format
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% to 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 supports
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% the saving of more than one frame to the same file or blob, whether the
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% format supports native in-memory I/O, and a brief description of the format.
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%
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% The format of the RegisterDMRImage method is:
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%
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% size_t RegisterDMRImage(void)
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%
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*/
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ModuleExport size_t RegisterDMRImage(void)
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{
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MagickInfo
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*entry;
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entry=AcquireMagickInfo("DMR","DMR","Digital Media Repository");
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#if defined(MAGICKCORE_DMR_DELEGATE)
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entry->decoder=(DecodeImageHandler *) ReadDMRImage;
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entry->encoder=(EncodeImageHandler *) WriteDMRImage;
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#endif
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entry->flags^=CoderBlobSupportFlag;
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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 D M R 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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% UnregisterDMRImage() removes format registrations made by the MCR module
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% from the list of supported formats.
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%
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% The format of the UnregisterDMRImage method is:
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%
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% UnregisterDMRImage(void)
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%
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*/
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ModuleExport void UnregisterDMRImage(void)
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{
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(void) UnregisterMagickInfo("DMR");
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}
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#if defined(MAGICKCORE_DMR_DELEGATE)
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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 D M R 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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% WriteDMRImage() puts an image to the digital media repository.
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%
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% The format of the WriteDMRImage method is:
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%
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% MagickBooleanType WriteDMRImage(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 WriteDMRImage(const ImageInfo *image_info,Image *image,
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ExceptionInfo *exception)
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{
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#define ThrowDMRWriteException() \
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{ \
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DestroyDMRResources(); \
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return(MagickFalse); \
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}
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char
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*message = (char *) NULL,
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*path = (char *) NULL;
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const char
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*option;
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MagickBooleanType
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status;
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MagickCache
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*cache = (MagickCache *) NULL;
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MagickCacheResource
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*resource = (MagickCacheResource *) NULL;
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MagickCacheResourceType
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type;
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StringInfo
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*passkey = (StringInfo *) NULL,
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*passphrase = (StringInfo *) NULL;
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time_t
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ttl = 0;
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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 != (const 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",
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image_info->filename);
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option=GetImageOption(image_info,"dmr:path");
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if (option != (const char *) NULL)
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path=ConstantString(option);
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option=GetImageOption(image_info,"dmr:passkey");
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if (option != (const char *) NULL)
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{
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passkey=FileToStringInfo(option,~0UL,exception);
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if (passkey == (StringInfo *) NULL)
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{
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message=GetExceptionMessage(errno);
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(void) ThrowMagickException(exception,GetMagickModule(),OptionError,
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"unable to read passkey","`%s': %s",option,message);
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ThrowDMRWriteException();
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}
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}
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option=GetImageOption(image_info,"dmr:passphrase");
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if (option != (const char *) NULL)
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{
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passphrase=FileToStringInfo(option,~0UL,exception);
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if (passphrase == (StringInfo *) NULL)
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{
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message=GetExceptionMessage(errno);
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(void) ThrowMagickException(exception,GetMagickModule(),OptionError,
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"unable to read passphrase","`%s': %s",option,message);
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ThrowDMRWriteException();
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}
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}
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option=GetImageOption(image_info,"dmr:ttl");
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if (option != (const char *) NULL)
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{
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char
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*q;
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/*
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Time to live, absolute or relative, e.g. 1440, 2 hours, 3 days, ...
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*/
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ttl=(time_t) InterpretLocaleValue(option,&q);
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if (q != option)
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{
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while (isspace((int) ((unsigned char) *q)) != 0)
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q++;
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if (LocaleNCompare(q,"second",6) == 0)
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ttl*=1;
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if (LocaleNCompare(q,"minute",6) == 0)
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ttl*=60;
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if (LocaleNCompare(q,"hour",4) == 0)
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ttl*=3600;
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if (LocaleNCompare(q,"day",3) == 0)
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ttl*=86400;
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if (LocaleNCompare(q,"week",4) == 0)
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ttl*=604800;
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if (LocaleNCompare(q,"month",5) == 0)
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ttl*=2628000;
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if (LocaleNCompare(q,"year",4) == 0)
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ttl*=31536000;
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}
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}
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cache=AcquireMagickCache(path,passkey);
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if (cache == (MagickCache *) NULL)
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{
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message=GetExceptionMessage(errno);
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(void) ThrowMagickException(exception,GetMagickModule(),OptionError,
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"unable to open digital media repository","`%s': %s",path,message);
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ThrowDMRWriteException();
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}
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resource=AcquireMagickCacheResource(cache,image_info->filename);
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SetMagickCacheResourceTTL(resource,ttl);
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type=GetMagickCacheResourceType(resource);
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switch (type)
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{
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case ImageResourceType:
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{
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Image
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*resource_image;
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resource_image=CloneImageList(image,exception);
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if (resource_image == (Image *) NULL)
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ThrowDMRWriteException();
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if (passphrase != (StringInfo *) NULL)
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{
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status=PasskeyEncipherImage(resource_image,passphrase,exception);
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if (status == MagickFalse)
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ThrowDMRWriteException();
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}
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status=PutMagickCacheResourceImage(cache,resource,resource_image);
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resource_image=DestroyImageList(resource_image);
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break;
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}
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case BlobResourceType:
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{
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size_t
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extent;
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ImageInfo *write_info = AcquireImageInfo();
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void *blob = ImageToBlob(write_info,image,&extent,exception);
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write_info=DestroyImageInfo(write_info);
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if (blob == (void *) NULL)
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ThrowDMRWriteException();
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status=PutMagickCacheResourceBlob(cache,resource,extent,blob);
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blob=RelinquishMagickMemory(blob);
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break;
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}
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case MetaResourceType:
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{
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const char *meta = GetImageProperty(image,"dmr:meta",exception);
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if (meta == (const char *) NULL)
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ThrowDMRWriteException();
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status=PutMagickCacheResourceMeta(cache,resource,meta);
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if (status == MagickFalse)
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(void) ThrowMagickException(exception,GetMagickModule(),OptionError,
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"no such metadata","`%s'",image->filename);
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break;
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}
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default:
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{
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(void) ThrowMagickException(exception,GetMagickModule(),OptionError,
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"resource type not supported","`%s'",image->filename);
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ThrowDMRWriteException();
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break;
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}
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}
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if (status == MagickFalse)
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ThrowDMRWriteException();
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DestroyDMRResources();
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return(status);
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}
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#endif
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