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DEFINITIONS
This source file includes following definitions.
- IsCALS
- ReadCALSImage
- RegisterCALSImage
- UnregisterCALSImage
- WriteCALSRecord
- WriteCALSImage
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% CCCC AAA L SSSSS %
% C A A L SS %
% C AAAAA L SSS %
% C A A L SS %
% CCCC A A LLLLL SSSSS %
% %
% %
% Read/Write CALS Raster Group 1 Image Format %
% %
% Software Design %
% John Cristy %
% July 1992 %
% %
% %
% Copyright 1999-2013 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 %
% %
% http://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. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% The CALS raster format is a standard developed by the Computer Aided
% Acquisition and Logistics Support (CALS) office of the United States
% Department of Defense to standardize graphics data interchange for
% electronic publishing, especially in the areas of technical graphics,
% CAD/CAM, and image processing applications.
%
*/
/*
Include declarations.
*/
#include "magick/studio.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/cache.h"
#include "magick/colorspace.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/geometry.h"
#include "magick/image.h"
#include "magick/image-private.h"
#include "magick/list.h"
#include "magick/magick.h"
#include "magick/memory_.h"
#include "magick/monitor.h"
#include "magick/monitor-private.h"
#include "magick/option.h"
#include "magick/pixel-accessor.h"
#include "magick/quantum-private.h"
#include "magick/resource_.h"
#include "magick/static.h"
#include "magick/string_.h"
#include "magick/module.h"
#if defined(MAGICKCORE_TIFF_DELEGATE)
/*
Forward declarations.
*/
static MagickBooleanType
WriteCALSImage(const ImageInfo *,Image *);
#endif
/*
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% %
% %
% %
% I s C A L S %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% IsCALS() returns MagickTrue if the image format type, identified by the
% magick string, is CALS Raster Group 1.
%
% The format of the IsCALS method is:
%
% MagickBooleanType IsCALS(const unsigned char *magick,const size_t length)
%
% A description of each parameter follows:
%
% o magick: compare image format pattern against these bytes.
%
% o length: Specifies the length of the magick string.
%
*/
static MagickBooleanType IsCALS(const unsigned char *magick,const size_t length)
{
if (length < 128)
return(MagickFalse);
if (LocaleNCompare((const char *) magick,"version: MIL-STD-1840",21) == 0)
return(MagickTrue);
if (LocaleNCompare((const char *) magick,"srcdocid:",9) == 0)
return(MagickTrue);
if (LocaleNCompare((const char *) magick,"rorient:",8) == 0)
return(MagickTrue);
return(MagickFalse);
}
/*
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% %
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% R e a d C A L S I m a g e %
% %
% %
% %
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%
% ReadCALSImage() reads an CALS Raster Group 1 image format 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 ReadCALSImage method is:
%
% Image *ReadCALSImage(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 *ReadCALSImage(const ImageInfo *image_info,
ExceptionInfo *exception)
{
char
filename[MaxTextExtent],
header[129],
message[MaxTextExtent];
FILE
*file;
Image
*image;
ImageInfo
*read_info;
int
c,
unique_file;
MagickBooleanType
status;
register ssize_t
i;
unsigned long
density,
direction,
height,
orientation,
pel_path,
type,
width;
/*
Open image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickSignature);
image=AcquireImage(image_info);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
/*
Read CALS header.
*/
(void) ResetMagickMemory(header,0,sizeof(header));
density=0;
direction=0;
orientation=1;
pel_path=0;
type=1;
width=0;
height=0;
for (i=0; i < 16; i++)
{
if (ReadBlob(image,128,(unsigned char *) header) != 128)
break;
switch (*header)
{
case 'R':
case 'r':
{
if (LocaleNCompare(header,"rdensty:",8) == 0)
{
(void) sscanf(header+8,"%lu",&density);
break;
}
if (LocaleNCompare(header,"rpelcnt:",8) == 0)
{
(void) sscanf(header+8,"%lu,%lu",&width,&height);
break;
}
if (LocaleNCompare(header,"rorient:",8) == 0)
{
(void) sscanf(header+8,"%lu,%lu",&pel_path,&direction);
if (pel_path == 90)
orientation=5;
else
if (pel_path == 180)
orientation=3;
else
if (pel_path == 270)
orientation=7;
if (direction == 90)
orientation++;
break;
}
if (LocaleNCompare(header,"rtype:",6) == 0)
{
(void) sscanf(header+6,"%lu",&type);
break;
}
break;
}
}
}
/*
Read CALS pixels.
*/
file=(FILE *) NULL;
unique_file=AcquireUniqueFileResource(filename);
if (unique_file != -1)
file=fdopen(unique_file,"wb");
if ((unique_file == -1) || (file == (FILE *) NULL))
ThrowImageException(FileOpenError,"UnableToCreateTemporaryFile");
while ((c=ReadBlobByte(image)) != EOF)
(void) fputc(c,file);
(void) fclose(file);
(void) CloseBlob(image);
image=DestroyImage(image);
read_info=CloneImageInfo(image_info);
SetImageInfoBlob(read_info,(void *) NULL,0);
(void) FormatLocaleString(read_info->filename,MaxTextExtent,"group4:%s",
filename);
(void) FormatLocaleString(message,MaxTextExtent,"%lux%lu",width,height);
read_info->size=ConstantString(message);
(void) FormatLocaleString(message,MaxTextExtent,"%lu",density);
read_info->density=ConstantString(message);
read_info->orientation=(OrientationType) orientation;
image=ReadImage(read_info,exception);
if (image != (Image *) NULL)
{
(void) CopyMagickString(image->filename,image_info->filename,
MaxTextExtent);
(void) CopyMagickString(image->magick_filename,image_info->filename,
MaxTextExtent);
(void) CopyMagickString(image->magick,"CALS",MaxTextExtent);
}
read_info=DestroyImageInfo(read_info);
(void) RelinquishUniqueFileResource(filename);
return(image);
}
/*
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% %
% %
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% R e g i s t e r C A L S I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterCALSImage() adds attributes for the CALS Raster Group 1 image file
% 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 RegisterCALSImage method is:
%
% size_t RegisterCALSImage(void)
%
*/
ModuleExport size_t RegisterCALSImage(void)
{
MagickInfo
*entry;
static const char
*CALSDescription=
{
"Continuous Acquisition and Life-cycle Support Type 1"
},
*CALSNote=
{
"Specified in MIL-R-28002 and MIL-PRF-28002"
};
entry=SetMagickInfo("CAL");
entry->decoder=(DecodeImageHandler *) ReadCALSImage;
#if defined(MAGICKCORE_TIFF_DELEGATE)
entry->encoder=(EncodeImageHandler *) WriteCALSImage;
#endif
entry->adjoin=MagickFalse;
entry->magick=(IsImageFormatHandler *) IsCALS;
entry->description=ConstantString(CALSDescription);
entry->note=ConstantString(CALSNote);
entry->module=ConstantString("CALS");
(void) RegisterMagickInfo(entry);
entry=SetMagickInfo("CALS");
entry->decoder=(DecodeImageHandler *) ReadCALSImage;
#if defined(MAGICKCORE_TIFF_DELEGATE)
entry->encoder=(EncodeImageHandler *) WriteCALSImage;
#endif
entry->adjoin=MagickFalse;
entry->magick=(IsImageFormatHandler *) IsCALS;
entry->description=ConstantString(CALSDescription);
entry->note=ConstantString(CALSNote);
entry->module=ConstantString("CALS");
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
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% %
% %
% %
% U n r e g i s t e r C A L S I m a g e %
% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterCALSImage() removes format registrations made by the
% CALS module from the list of supported formats.
%
% The format of the UnregisterCALSImage method is:
%
% UnregisterCALSImage(void)
%
*/
ModuleExport void UnregisterCALSImage(void)
{
(void) UnregisterMagickInfo("CAL");
(void) UnregisterMagickInfo("CALS");
}
#if defined(MAGICKCORE_TIFF_DELEGATE)
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W r i t e C A L S I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% WriteCALSImage() writes an image to a file in CALS Raster Group 1 image
% format.
%
% The format of the WriteCALSImage method is:
%
% MagickBooleanType WriteCALSImage(const ImageInfo *image_info,
% Image *image)
%
% A description of each parameter follows.
%
% o image_info: the image info.
%
% o image: The image.
%
*/
static ssize_t WriteCALSRecord(Image *image,const char *data)
{
char
pad[128];
register const char
*p;
register ssize_t
i;
ssize_t
count;
i=0;
count=0;
if (data != (const char *) NULL)
{
p=data;
for (i=0; (i < 128) && (p[i] != '\0'); i++);
count=WriteBlob(image,(size_t) i,(const unsigned char *) data);
}
if (i < 128)
{
i=128-i;
(void) ResetMagickMemory(pad,' ',(size_t) i);
count=WriteBlob(image,(size_t) i,(const unsigned char *) pad);
}
return(count);
}
static MagickBooleanType WriteCALSImage(const ImageInfo *image_info,
Image *image)
{
char
header[129];
Image
*group4_image;
ImageInfo
*write_info;
MagickBooleanType
status;
register ssize_t
i;
size_t
density,
length,
orient_x,
orient_y;
ssize_t
count;
unsigned char
*group4;
/*
Open output image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
if (status == MagickFalse)
return(status);
/*
Create standard CALS header.
*/
count=WriteCALSRecord(image,"srcdocid: NONE");
(void) count;
count=WriteCALSRecord(image,"dstdocid: NONE");
count=WriteCALSRecord(image,"txtfilid: NONE");
count=WriteCALSRecord(image,"figid: NONE");
count=WriteCALSRecord(image,"srcgph: NONE");
count=WriteCALSRecord(image,"docls: NONE");
count=WriteCALSRecord(image,"rtype: 1");
orient_x=0;
orient_y=0;
switch (image->orientation)
{
case TopRightOrientation:
{
orient_x=180;
orient_y=270;
break;
}
case BottomRightOrientation:
{
orient_x=180;
orient_y=90;
break;
}
case BottomLeftOrientation:
{
orient_y=90;
break;
}
case LeftTopOrientation:
{
orient_x=270;
break;
}
case RightTopOrientation:
{
orient_x=270;
orient_y=180;
break;
}
case RightBottomOrientation:
{
orient_x=90;
orient_y=180;
break;
}
case LeftBottomOrientation:
{
orient_x=90;
break;
}
default:
{
orient_y=270;
}
}
(void) FormatLocaleString(header,MaxTextExtent,"rorient: %03ld,%03ld",
(long) orient_x,(long) orient_y);
count=WriteCALSRecord(image,header);
(void) FormatLocaleString(header,MaxTextExtent,"rpelcnt: %06lu,%06lu",
(unsigned long) image->columns,(unsigned long) image->rows);
count=WriteCALSRecord(image,header);
density=200;
if (image_info->density != (char *) NULL)
{
GeometryInfo
geometry_info;
(void) ParseGeometry(image_info->density,&geometry_info);
density=(size_t) floor(geometry_info.rho+0.5);
}
(void) FormatLocaleString(header,MaxTextExtent,"rdensty: %04lu",
(unsigned long) density);
count=WriteCALSRecord(image,header);
count=WriteCALSRecord(image,"notes: NONE");
(void) ResetMagickMemory(header,' ',128);
for (i=0; i < 5; i++)
(void) WriteBlob(image,128,(unsigned char *) header);
/*
Write CALS pixels.
*/
write_info=CloneImageInfo(image_info);
(void) CopyMagickString(write_info->filename,"GROUP4:",MaxTextExtent);
(void) CopyMagickString(write_info->magick,"GROUP4",MaxTextExtent);
group4_image=CloneImage(image,0,0,MagickTrue,&image->exception);
if (group4_image == (Image *) NULL)
{
(void) CloseBlob(image);
return(MagickFalse);
}
group4=(unsigned char *) ImageToBlob(write_info,group4_image,&length,
&image->exception);
group4_image=DestroyImage(group4_image);
if (group4 == (unsigned char *) NULL)
{
(void) CloseBlob(image);
return(MagickFalse);
}
write_info=DestroyImageInfo(write_info);
if (WriteBlob(image,length,group4) != (ssize_t) length)
status=MagickFalse;
group4=(unsigned char *) RelinquishMagickMemory(group4);
(void) CloseBlob(image);
return(status);
}
#endif