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/*
% Copyright (C) 2003-2020 GraphicsMagick Group
% Copyright (C) 2002 ImageMagick Studio
% Copyright 1991-1999 E. I. du Pont de Nemours and Company
%
% This program is covered by multiple licenses, which are described in
% Copyright.txt. You should have received a copy of Copyright.txt with this
% package; otherwise see http://www.graphicsmagick.org/www/Copyright.html.
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% PPPP W W PPPP %
% P P W W P P %
% PPPP W W PPPP %
% P W W W P %
% P W W P %
% %
% %
% Read Seattle Film Works Image Format. %
% %
% %
% Software Design %
% John Cristy %
% July 1992 %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
Include declarations.
*/
#include "magick/studio.h"
#include "magick/blob.h"
#include "magick/constitute.h"
#include "magick/magick.h"
#include "magick/monitor.h"
#include "magick/tempfile.h"
#include "magick/utility.h"
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% I s P W P %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method IsPWP returns True if the image format type, identified by the
% magick string, is PWP.
%
% The format of the IsPWP method is:
%
% unsigned int IsPWP(const unsigned char *magick,const size_t length)
%
% A description of each parameter follows:
%
% o status: Method IsPWP returns True if the image format type is PWP.
%
% 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 IsPWP(const unsigned char *magick,const size_t length)
{
if (length < 5)
return(False);
if (LocaleNCompare((char *) magick,"SFW95",5) == 0)
return(True);
return(False);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d P W P I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method ReadPWPImage reads a Seattle Film Works multi-image file 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 ReadPWPImage method is:
%
% Image *ReadPWPImage(const ImageInfo *image_info,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image: Method ReadPWPImage 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 a ImageInfo structure.
%
% o exception: return any errors or warnings in this structure.
%
%
*/
static Image *ReadPWPImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
FILE
*file;
Image
*image,
*next_image,
*pwp_image;
ImageInfo
*clone_info;
int
c;
MonitorHandler
handler;
register Image
*p;
register unsigned long
i;
size_t
count;
unsigned char
magick[MaxTextExtent];
unsigned int
status;
unsigned long
filesize;
/*
Open image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickSignature);
image=(Image *) NULL;
pwp_image=AllocateImage(image_info);
status=OpenBlob(image_info,pwp_image,ReadBinaryBlobMode,exception);
if (status == False)
ThrowReaderException(FileOpenError,UnableToOpenFile,pwp_image);
count=ReadBlob(pwp_image,5,(char *) magick);
if ((count != 5) || (LocaleNCompare((char *) magick,"SFW95",5) != 0))
ThrowReaderException(CorruptImageError,ImproperImageHeader,pwp_image);
clone_info=CloneImageInfo(image_info);
clone_info->blob=(void *) NULL;
clone_info->length=0;
for ( ; ; )
{
(void) memset(magick,0,sizeof(magick));
for (c=ReadBlobByte(pwp_image); c != EOF; c=ReadBlobByte(pwp_image))
{
for (i=0; i < 17; i++)
magick[i]=magick[i+1];
magick[17]=(unsigned char) c;
if (LocaleNCompare((char *) (magick+12),"SFW94A",6) == 0)
break;
}
if (c == EOF)
{
ThrowException(exception,CorruptImageError,UnexpectedEndOfFile,
clone_info->filename);
break;
}
if (LocaleNCompare((char *) (magick+12),"SFW94A",6) != 0)
{
ThrowException(exception,CorruptImageError,ImproperImageHeader,
clone_info->filename);
break;
}
/*
Dump SFW image to a temporary file.
*/
{
char tmpfile[MaxTextExtent];
file=AcquireTemporaryFileStream(tmpfile,BinaryFileIOMode);
if (file == (FILE *) NULL)
{
ThrowException(exception,FileOpenError,UnableToCreateTemporaryFile,
clone_info->filename);
break;
}
(void) strlcpy(clone_info->filename,"SFW:",sizeof(clone_info->filename));
(void) strlcat(clone_info->filename,tmpfile,sizeof(clone_info->filename));
}
(void) fwrite("SFW94A",1,6,file);
filesize=(65535L*magick[2]+256L*magick[1]+magick[0]) & 0xFFFFFFFF;
for (i=0; i < filesize; i++)
{
if ((c=ReadBlobByte(pwp_image)) == EOF)
break;
(void) fputc(c,file);
}
(void) fclose(file);
if (c == EOF)
{
ThrowException(exception,CorruptImageError,UnexpectedEndOfFile,
clone_info->filename);
break;
}
handler=SetMonitorHandler((MonitorHandler) NULL);
next_image=ReadImage(clone_info,exception);
(void) LiberateTemporaryFile(clone_info->filename);
(void) SetMonitorHandler(handler);
if (next_image == (Image *) NULL)
break;
StopTimer(&next_image->timer);
FormatString(next_image->filename,"slide_%02ld.sfw",next_image->scene);
if (image == (Image *) NULL)
image=next_image;
else
{
/*
Link image into image list.
*/
for (p=image; p->next != (Image *) NULL; p=p->next);
next_image->previous=p;
next_image->scene=p->scene+1;
p->next=next_image;
}
if (image_info->subrange != 0)
if (next_image->scene >= (image_info->subimage+image_info->subrange-1))
break;
if (!MagickMonitorFormatted(TellBlob(pwp_image),GetBlobSize(image),
&image->exception,LoadImagesText,
image->filename))
break;
}
DestroyImageInfo(clone_info);
CloseBlob(pwp_image);
DestroyImage(pwp_image);
return(image);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r P W P I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method RegisterPWPImage adds attributes for the PWP 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 RegisterPWPImage method is:
%
% RegisterPWPImage(void)
%
*/
ModuleExport void RegisterPWPImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("PWP");
entry->decoder=(DecoderHandler) ReadPWPImage;
entry->magick=(MagickHandler) IsPWP;
entry->description="Seattle Film Works";
entry->module="PWP";
entry->coder_class=UnstableCoderClass;
(void) RegisterMagickInfo(entry);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r P W P I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% Method UnregisterPWPImage removes format registrations made by the
% PWP module from the list of supported formats.
%
% The format of the UnregisterPWPImage method is:
%
% UnregisterPWPImage(void)
%
*/
ModuleExport void UnregisterPWPImage(void)
{
(void) UnregisterMagickInfo("PWP");
}
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