text: /*
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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  %                               FFFFF  DDDD                                   %
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  %                               F      D   D                                  %
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  %                  Retrieve An Image Via a File Descriptor.                   %
  %                                                                             %
  %                              Software Design                                %
  %                                   Cristy                                    %
  %                              Bill Radcliffe                                 %
  %                                March 2000                                   %
  %                                                                             %
  %                                                                             %
  %  Copyright 1999-2017 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                                            %
  %                                                                             %
  %    https://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.                                             %
  %                                                                             %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  %
  */
  
  /*
    Include declarations.
  */
  #include "MagickCore/studio.h"
  #include "MagickCore/blob.h"
  #include "MagickCore/blob-private.h"
  #include "MagickCore/constitute.h"
  #include "MagickCore/exception.h"
  #include "MagickCore/exception-private.h"
  #include "MagickCore/image.h"
  #include "MagickCore/image-private.h"
  #include "MagickCore/list.h"
  #include "MagickCore/magick.h"
  #include "MagickCore/memory_.h"
  #include "MagickCore/module.h"
  #include "MagickCore/quantum-private.h"
  #include "MagickCore/static.h"
  #include "MagickCore/resource_.h"
  #include "MagickCore/string_.h"
  #include "MagickCore/string-private.h"
  #include "MagickCore/utility.h"
  
  /*
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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  %                                                                             %
  %   R e a d F D I m a g e                                                     %
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  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  %  ReadFDImage retrieves an image via a file descriptor, decodes the image,
  %  and returns it.  It allocates the memory necessary for the new Image
  %  structure and returns a pointer to the new image.
  %
  %  The format of the ReadFDImage method is:
  %
  %      Image *ReadFDImage(const ImageInfo *image_info,ExceptionInfo *exception)
  %
  %  A description of each parameter follows:
  %
  %    o image_info: the image info.
  %
  %    o exception: return any errors or warnings in this structure.
  %
  */
  static Image *ReadFDImage(const ImageInfo *image_info,ExceptionInfo *exception)
  {
    Image
      *image;
  
    ImageInfo
      *read_info;
  
    /*
      Open image file.
    */
    assert(image_info != (const ImageInfo *) NULL);
    assert(image_info->signature == MagickCoreSignature);
    if (image_info->debug != MagickFalse)
      (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
        image_info->filename);
    assert(exception != (ExceptionInfo *) NULL);
    assert(exception->signature == MagickCoreSignature);
    read_info=CloneImageInfo(image_info);
    read_info->file=fdopen(StringToLong(image_info->filename),"rb");
    if ((read_info->file ==  (FILE *) NULL) ||
        (IsGeometry(image_info->filename) == MagickFalse))
      {
        read_info=DestroyImageInfo(read_info);
        ThrowFileException(exception,BlobError,"UnableToOpenBlob",
          image_info->filename);
        return((Image *) NULL);
      }
    *read_info->magick='\0';
    image=ReadImage(read_info,exception);
    (void) fclose(read_info->file);
    read_info=DestroyImageInfo(read_info);
    if (image == (Image *) NULL)
      {
        (void) ThrowMagickException(exception,GetMagickModule(),CoderError,
          "NoDataReturned","`%s'",image_info->filename);
        return((Image *) NULL);
      }
    return(GetFirstImageInList(image));
  }
  
  /*
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %   R e g i s t e r F D I m a g e                                             %
  %                                                                             %
  %                                                                             %
  %                                                                             %
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  %  RegisterFDImage() adds attributes for the FD 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 RegisterFDImage method is:
  %
  %      size_t RegisterFDImage(void)
  %
  */
  ModuleExport size_t RegisterFDImage(void)
  {
    MagickInfo
      *entry;
  
    entry=AcquireMagickInfo("FD","FD","Read image from a file descriptor");
    entry->decoder=(DecodeImageHandler *) ReadFDImage;
    entry->flags|=CoderStealthFlag;
    (void) RegisterMagickInfo(entry);
    return(MagickImageCoderSignature);
  }
  
  /*
  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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  %                                                                             %
  %   U n r e g i s t e r F D I m a g e                                         %
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  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  %
  %  UnregisterFDImage() removes format registrations made by the FD module from
  %  the list of supported formats.
  %
  %  The format of the UnregisterFDImage method is:
  %
  %      UnregisterFDImage(void)
  %
  */
  ModuleExport void UnregisterFDImage(void)
  {
    (void) UnregisterMagickInfo("FD");
  }
  