/*
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% BBBB IIIII M M %
% B B I MM MM %
% BBBB I M M M %
% B B I M M %
% BBBB IIIII M M %
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% Read/Write ImageMagick Image Format. %
% %
% %
% Software Design %
% John Cristy %
% July 1999 %
% %
% %
% Copyright (C) 2001 ImageMagick Studio, a non-profit organization dedicated %
% to making software imaging solutions freely available. %
% %
% Permission is hereby granted, free of charge, to any person obtaining a %
% copy of this software and associated documentation files ("ImageMagick"), %
% to deal in ImageMagick without restriction, including without limitation %
% the rights to use, copy, modify, merge, publish, distribute, sublicense, %
% and/or sell copies of ImageMagick, and to permit persons to whom the %
% ImageMagick is furnished to do so, subject to the following conditions: %
% %
% The above copyright notice and this permission notice shall be included in %
% all copies or substantial portions of ImageMagick. %
% %
% The software is provided "as is", without warranty of any kind, express or %
% implied, including but not limited to the warranties of merchantability, %
% fitness for a particular purpose and noninfringement. In no event shall %
% ImageMagick Studio be liable for any claim, damages or other liability, %
% whether in an action of contract, tort or otherwise, arising from, out of %
% or in connection with ImageMagick or the use or other dealings in %
% ImageMagick. %
% %
% Except as contained in this notice, the name of the ImageMagick Studio %
% shall not be used in advertising or otherwise to promote the sale, use or %
% other dealings in ImageMagick without prior written authorization from the %
% ImageMagick Studio. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
Include declarations.
*/
#include "magick.h"
#include "defines.h"
/*
Forward declarations.
*/
static unsigned int
Write8BIMImage(const ImageInfo *,Image *);
/*
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% I s 8 B I M %
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% Method Is8BIM returns True if the image format type, identified by the
% magick string, is 8BIM.
%
% The format of the Is8BIM method is:
%
% unsigned int Is8BIM(const unsigned char *magick,
% const unsigned int length)
%
% A description of each parameter follows:
%
% o status: Method Is8BIM returns True if the image format type is 8BIM.
%
% o magick: This string is generally the first few bytes of an image file
% or blob.
%
% o length: Specifies the length of the magick string.
%
%
*/
static unsigned int Is8BIM(const unsigned char *magick,
const unsigned int length)
{
if (length < 4)
return(False);
if (LocaleNCompare((char *) magick,"8BIM",4) == 0)
return(True);
return(False);
}
/*
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% R e a d 8 B I M I m a g e %
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%
% Method Read8BIMImage reads an binary file in the 8BIM format and returns it.
% It allocates the memory necessary for the new Image structure and returns a
% pointer to the new image. This method differs from the other decoder
% methods in that only the Photoshop resource (8BIM) information is useful in
% the returned image.
%
% The format of the Read8BIMImage method is:
%
% Image *Read8BIMImage(const ImageInfo *image_info,
% ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: Method Read8BIMImage returns a pointer to the image after
% reading. A null image is returned if there is a memory shortage or if
% the image cannot be read.
%
% o image_info: Specifies a pointer to an ImageInfo structure.
%
% o exception: return any errors or warnings in this structure.
%
%
*/
static Image *Read8BIMImage(const ImageInfo *image_info,
ExceptionInfo *exception)
{
Image
*image;
int
c;
register unsigned char
*q;
unsigned int
length,
status;
/*
Open image file.
*/
image=AllocateImage(image_info);
status=OpenBlob(image_info,image,ReadBinaryType);
if (status == False)
ThrowReaderException(FileOpenWarning,"Unable to open file",image);
image->columns=1;
image->rows=1;
SetImage(image,OpaqueOpacity);
/*
Read 8BIM image.
*/
length=MaxTextExtent;
image->iptc_profile.info=(unsigned char *) AcquireMemory(length+2);
for (q=image->iptc_profile.info; image->iptc_profile.info; q++)
{
c=ReadBlobByte(image);
if (c == EOF)
break;
if ((q-image->iptc_profile.info+1) >= (int) length)
{
image->iptc_profile.length=q-image->iptc_profile.info;
length<<=1;
ReacquireMemory((void **) &image->iptc_profile.info,length+2);
if (image->iptc_profile.info == (unsigned char *) NULL)
break;
q=image->iptc_profile.info+image->iptc_profile.length;
}
*q=(unsigned char) c;
}
if (image->iptc_profile.info == (unsigned char *) NULL)
ThrowReaderException(FileOpenWarning,"Memory allocation failed",image);
image->iptc_profile.length=q-image->iptc_profile.info;
CloseBlob(image);
return(image);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r 8 B I M I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method Register8BIMImage adds attributes for the 8BIM 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 Register8BIMImage method is:
%
% Register8BIMImage(void)
%
*/
ModuleExport void Register8BIMImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("8BIM");
entry->decoder=Read8BIMImage;
entry->encoder=Write8BIMImage;
entry->magick=Is8BIM;
entry->adjoin=False;
entry->description=AllocateString("Photoshop resource format");
entry->module=AllocateString("8BIM");
RegisterMagickInfo(entry);
}
/*
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% %
% %
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% U n r e g i s t e r 8 B I M I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method UnregisterBIMImage removes format registrations made by the
% BIM module from the list of supported formats.
%
% The format of the UnregisterBIMImage method is:
%
% Unregister8BIMImage(void)
%
*/
ModuleExport void Unregister8BIMImage(void)
{
UnregisterMagickInfo("8BIM");
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W r i t e 8 B I M I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method Write8BIMImage writes an image in the 8BIM format.
%
% The format of the Write8BIMImage method is:
%
% unsigned int Write8BIMImage(const ImageInfo *image_info,Image *image)
%
% A description of each parameter follows.
%
% o status: Method Write8BIMImage return True if the image is written.
% False is returned is there is a memory shortage or if the image file
% fails to write.
%
% o image_info: Specifies a pointer to an ImageInfo structure.
%
% o image: A pointer to a Image structure.
%
%
*/
static unsigned int Write8BIMImage(const ImageInfo *image_info,Image *image)
{
unsigned int
status;
if (image->iptc_profile.length == 0)
ThrowWriterException(FileOpenWarning,"No 8BIM data is available",image);
/*
Open image file.
*/
status=OpenBlob(image_info,image,WriteBinaryType);
if (status == False)
ThrowWriterException(FileOpenWarning,"Unable to open file",image);
(void) WriteBlob(image,(int) image->iptc_profile.length,
(char *) image->iptc_profile.info);
CloseBlob(image);
return(True);
}
