forked from openkylin/imagemagick
498 lines
19 KiB
C
498 lines
19 KiB
C
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% EEEEE PPPP TTTTT %
|
||
% E P P T %
|
||
% EEE PPPP T %
|
||
% E P T %
|
||
% EEEEE P T %
|
||
% %
|
||
% %
|
||
% Read/Write Encapsulated Postscript Format (with preview). %
|
||
% %
|
||
% Software Design %
|
||
% Cristy %
|
||
% July 1992 %
|
||
% %
|
||
% %
|
||
% Copyright 1999-2021 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://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 "magick/studio.h"
|
||
#include "magick/blob.h"
|
||
#include "magick/blob-private.h"
|
||
#include "magick/color.h"
|
||
#include "magick/constitute.h"
|
||
#include "magick/draw.h"
|
||
#include "magick/exception.h"
|
||
#include "magick/exception-private.h"
|
||
#include "magick/delegate.h"
|
||
#include "magick/geometry.h"
|
||
#include "magick/histogram.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/pixel-accessor.h"
|
||
#include "magick/quantize.h"
|
||
#include "magick/quantum-private.h"
|
||
#include "magick/resource_.h"
|
||
#include "magick/static.h"
|
||
#include "magick/string_.h"
|
||
#include "magick/module.h"
|
||
#include "magick/transform.h"
|
||
#include "magick/utility.h"
|
||
|
||
/*
|
||
Typedef declarations.
|
||
*/
|
||
typedef struct _EPTInfo
|
||
{
|
||
size_t
|
||
magick;
|
||
|
||
MagickOffsetType
|
||
postscript_offset,
|
||
tiff_offset;
|
||
|
||
size_t
|
||
postscript_length,
|
||
tiff_length;
|
||
|
||
unsigned char
|
||
*postscript,
|
||
*tiff;
|
||
} EPTInfo;
|
||
|
||
/*
|
||
Forward declarations.
|
||
*/
|
||
static MagickBooleanType
|
||
WriteEPTImage(const ImageInfo *,Image *);
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% I s E P T %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% IsEPT() returns MagickTrue if the image format type, identified by the
|
||
% magick string, is EPT.
|
||
%
|
||
% The format of the IsEPT method is:
|
||
%
|
||
% MagickBooleanType IsEPT(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 IsEPT(const unsigned char *magick,const size_t length)
|
||
{
|
||
if (length < 4)
|
||
return(MagickFalse);
|
||
if (memcmp(magick,"\305\320\323\306",4) == 0)
|
||
return(MagickTrue);
|
||
return(MagickFalse);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% R e a d E P T I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% ReadEPTImage() reads a binary Postscript 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 ReadEPTImage method is:
|
||
%
|
||
% Image *ReadEPTImage(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 *ReadEPTImage(const ImageInfo *image_info,ExceptionInfo *exception)
|
||
{
|
||
const void
|
||
*postscript_data,
|
||
*tiff_data;
|
||
|
||
EPTInfo
|
||
ept_info;
|
||
|
||
Image
|
||
*image;
|
||
|
||
ImageInfo
|
||
*read_info;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
MagickOffsetType
|
||
offset;
|
||
|
||
ssize_t
|
||
count;
|
||
|
||
/*
|
||
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);
|
||
image=AcquireImage(image_info);
|
||
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
|
||
if (status == MagickFalse)
|
||
{
|
||
image=DestroyImageList(image);
|
||
return((Image *) NULL);
|
||
}
|
||
ept_info.magick=ReadBlobLSBLong(image);
|
||
if (ept_info.magick != 0xc6d3d0c5ul)
|
||
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
||
ept_info.postscript_offset=(MagickOffsetType) ReadBlobLSBLong(image);
|
||
ept_info.postscript_length=ReadBlobLSBLong(image);
|
||
if ((MagickSizeType) ept_info.postscript_length > GetBlobSize(image))
|
||
ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
|
||
(void) ReadBlobLSBLong(image);
|
||
(void) ReadBlobLSBLong(image);
|
||
ept_info.tiff_offset=(MagickOffsetType) ReadBlobLSBLong(image);
|
||
ept_info.tiff_length=ReadBlobLSBLong(image);
|
||
if ((MagickSizeType) ept_info.tiff_length > GetBlobSize(image))
|
||
ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
|
||
(void) ReadBlobLSBShort(image);
|
||
ept_info.postscript=(unsigned char *) AcquireQuantumMemory(
|
||
ept_info.postscript_length+1,sizeof(*ept_info.postscript));
|
||
if (ept_info.postscript == (unsigned char *) NULL)
|
||
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
||
(void) memset(ept_info.postscript,0,(ept_info.postscript_length+1)*
|
||
sizeof(*ept_info.postscript));
|
||
ept_info.tiff=(unsigned char *) AcquireQuantumMemory(ept_info.tiff_length+1,
|
||
sizeof(*ept_info.tiff));
|
||
if (ept_info.tiff == (unsigned char *) NULL)
|
||
{
|
||
ept_info.postscript=(unsigned char *) RelinquishMagickMemory(
|
||
ept_info.postscript);
|
||
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
||
}
|
||
(void) memset(ept_info.tiff,0,(ept_info.tiff_length+1)*
|
||
sizeof(*ept_info.tiff));
|
||
offset=SeekBlob(image,ept_info.tiff_offset,SEEK_SET);
|
||
if ((ept_info.tiff_length != 0) && (offset < 30))
|
||
{
|
||
ept_info.tiff=(unsigned char *) RelinquishMagickMemory(ept_info.tiff);
|
||
ept_info.postscript=(unsigned char *) RelinquishMagickMemory(
|
||
ept_info.postscript);
|
||
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
||
}
|
||
tiff_data=ReadBlobStream(image,ept_info.tiff_length,ept_info.tiff,&count);
|
||
if (count != (ssize_t) (ept_info.tiff_length))
|
||
(void) ThrowMagickException(exception,GetMagickModule(),CorruptImageWarning,
|
||
"InsufficientImageDataInFile","`%s'",image->filename);
|
||
offset=SeekBlob(image,ept_info.postscript_offset,SEEK_SET);
|
||
if ((ept_info.postscript_length != 0) && (offset < 30))
|
||
{
|
||
ept_info.tiff=(unsigned char *) RelinquishMagickMemory(ept_info.tiff);
|
||
ept_info.postscript=(unsigned char *) RelinquishMagickMemory(
|
||
ept_info.postscript);
|
||
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
||
}
|
||
postscript_data=ReadBlobStream(image,ept_info.postscript_length,
|
||
ept_info.postscript,&count);
|
||
if (count != (ssize_t) (ept_info.postscript_length))
|
||
ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
|
||
(void) CloseBlob(image);
|
||
image=DestroyImage(image);
|
||
read_info=CloneImageInfo(image_info);
|
||
(void) CopyMagickString(read_info->magick,"EPS",MagickPathExtent);
|
||
image=BlobToImage(read_info,postscript_data,ept_info.postscript_length,
|
||
exception);
|
||
if (image == (Image *) NULL)
|
||
{
|
||
(void) CopyMagickString(read_info->magick,"TIFF",MagickPathExtent);
|
||
image=BlobToImage(read_info,tiff_data,ept_info.tiff_length,exception);
|
||
}
|
||
read_info=DestroyImageInfo(read_info);
|
||
if (image != (Image *) NULL)
|
||
{
|
||
(void) CopyMagickString(image->filename,image_info->filename,
|
||
MagickPathExtent);
|
||
(void) CopyMagickString(image->magick,"EPT",MagickPathExtent);
|
||
}
|
||
ept_info.tiff=(unsigned char *) RelinquishMagickMemory(ept_info.tiff);
|
||
ept_info.postscript=(unsigned char *) RelinquishMagickMemory(
|
||
ept_info.postscript);
|
||
return(image);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% R e g i s t e r E P T I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% RegisterEPTImage() adds attributes for the EPT 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 RegisterEPTImage method is:
|
||
%
|
||
% size_t RegisterEPTImage(void)
|
||
%
|
||
*/
|
||
ModuleExport size_t RegisterEPTImage(void)
|
||
{
|
||
MagickInfo
|
||
*entry;
|
||
|
||
entry=SetMagickInfo("EPT");
|
||
entry->decoder=(DecodeImageHandler *) ReadEPTImage;
|
||
entry->encoder=(EncodeImageHandler *) WriteEPTImage;
|
||
entry->magick=(IsImageFormatHandler *) IsEPT;
|
||
entry->seekable_stream=MagickTrue;
|
||
entry->adjoin=MagickFalse;
|
||
entry->blob_support=MagickFalse;
|
||
entry->description=ConstantString(
|
||
"Encapsulated PostScript with TIFF preview");
|
||
entry->magick_module=ConstantString("EPT");
|
||
(void) RegisterMagickInfo(entry);
|
||
entry=SetMagickInfo("EPT2");
|
||
entry->decoder=(DecodeImageHandler *) ReadEPTImage;
|
||
entry->encoder=(EncodeImageHandler *) WriteEPTImage;
|
||
entry->magick=(IsImageFormatHandler *) IsEPT;
|
||
entry->adjoin=MagickFalse;
|
||
entry->seekable_stream=MagickTrue;
|
||
entry->blob_support=MagickFalse;
|
||
entry->description=ConstantString(
|
||
"Encapsulated PostScript Level II with TIFF preview");
|
||
entry->magick_module=ConstantString("EPT");
|
||
(void) RegisterMagickInfo(entry);
|
||
entry=SetMagickInfo("EPT3");
|
||
entry->decoder=(DecodeImageHandler *) ReadEPTImage;
|
||
entry->encoder=(EncodeImageHandler *) WriteEPTImage;
|
||
entry->magick=(IsImageFormatHandler *) IsEPT;
|
||
entry->seekable_stream=MagickTrue;
|
||
entry->blob_support=MagickFalse;
|
||
entry->description=ConstantString(
|
||
"Encapsulated PostScript Level III with TIFF preview");
|
||
entry->magick_module=ConstantString("EPT");
|
||
(void) RegisterMagickInfo(entry);
|
||
return(MagickImageCoderSignature);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% U n r e g i s t e r E P T I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% UnregisterEPTImage() removes format registrations made by the
|
||
% EPT module from the list of supported formats.
|
||
%
|
||
% The format of the UnregisterEPTImage method is:
|
||
%
|
||
% UnregisterEPTImage(void)
|
||
%
|
||
*/
|
||
ModuleExport void UnregisterEPTImage(void)
|
||
{
|
||
(void) UnregisterMagickInfo("EPT");
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% W r i t e E P T I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% WriteEPTImage() writes an image in the Encapsulated Postscript format
|
||
% with a TIFF preview.
|
||
%
|
||
% The format of the WriteEPTImage method is:
|
||
%
|
||
% MagickBooleanType WriteEPTImage(const ImageInfo *image_info,Image *image)
|
||
%
|
||
% A description of each parameter follows.
|
||
%
|
||
% o image_info: the image info.
|
||
%
|
||
% o image: The image.
|
||
%
|
||
*/
|
||
static MagickBooleanType WriteEPTImage(const ImageInfo *image_info,Image *image)
|
||
{
|
||
char
|
||
filename[MaxTextExtent];
|
||
|
||
EPTInfo
|
||
ept_info;
|
||
|
||
Image
|
||
*write_image;
|
||
|
||
ImageInfo
|
||
*write_info;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
/*
|
||
Write EPT image.
|
||
*/
|
||
assert(image_info != (const ImageInfo *) NULL);
|
||
assert(image_info->signature == MagickCoreSignature);
|
||
assert(image != (Image *) NULL);
|
||
assert(image->signature == MagickCoreSignature);
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
|
||
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
|
||
if (status == MagickFalse)
|
||
return(status);
|
||
write_image=CloneImage(image,0,0,MagickTrue,&image->exception);
|
||
if (write_image == (Image *) NULL)
|
||
return(MagickFalse);
|
||
write_info=CloneImageInfo(image_info);
|
||
(void) CopyMagickString(write_info->filename,"EPS:",MagickPathExtent);
|
||
(void) CopyMagickString(write_info->magick,"EPS",MagickPathExtent);
|
||
if (LocaleCompare(image_info->magick,"EPT2") == 0)
|
||
{
|
||
(void) CopyMagickString(write_info->filename,"EPS2:",MagickPathExtent);
|
||
(void) CopyMagickString(write_info->magick,"EPS2",MagickPathExtent);
|
||
}
|
||
if (LocaleCompare(image_info->magick,"EPT3") == 0)
|
||
{
|
||
(void) CopyMagickString(write_info->filename,"EPS3:",MagickPathExtent);
|
||
(void) CopyMagickString(write_info->magick,"EPS3",MagickPathExtent);
|
||
}
|
||
(void) memset(&ept_info,0,sizeof(ept_info));
|
||
ept_info.magick=0xc6d3d0c5ul;
|
||
ept_info.postscript=(unsigned char *) ImageToBlob(write_info,write_image,
|
||
&ept_info.postscript_length,&image->exception);
|
||
write_image=DestroyImage(write_image);
|
||
write_info=DestroyImageInfo(write_info);
|
||
if (ept_info.postscript == (void *) NULL)
|
||
return(MagickFalse);
|
||
write_image=CloneImage(image,0,0,MagickTrue,&image->exception);
|
||
if (write_image == (Image *) NULL)
|
||
return(MagickFalse);
|
||
write_info=CloneImageInfo(image_info);
|
||
(void) CopyMagickString(write_info->magick,"TIFF",MaxTextExtent);
|
||
(void) FormatLocaleString(filename,MaxTextExtent,"tiff:%s",
|
||
write_info->filename);
|
||
(void) CopyMagickString(write_info->filename,filename,MaxTextExtent);
|
||
(void) TransformImage(&write_image,(char *) NULL,"512x512>");
|
||
if ((write_image->storage_class == DirectClass) ||
|
||
(write_image->colors > 256))
|
||
{
|
||
QuantizeInfo
|
||
quantize_info;
|
||
|
||
/*
|
||
EPT preview requires that the image is colormapped.
|
||
*/
|
||
GetQuantizeInfo(&quantize_info);
|
||
quantize_info.dither=IsPaletteImage(write_image,&image->exception) ==
|
||
MagickFalse ? MagickTrue : MagickFalse;
|
||
(void) QuantizeImage(&quantize_info,write_image);
|
||
}
|
||
write_info->compression=NoCompression;
|
||
ept_info.tiff=(unsigned char *) ImageToBlob(write_info,write_image,
|
||
&ept_info.tiff_length,&image->exception);
|
||
write_image=DestroyImage(write_image);
|
||
write_info=DestroyImageInfo(write_info);
|
||
if (ept_info.tiff == (void *) NULL)
|
||
{
|
||
ept_info.postscript=(unsigned char *) RelinquishMagickMemory(
|
||
ept_info.postscript);
|
||
return(MagickFalse);
|
||
}
|
||
/*
|
||
Write EPT image.
|
||
*/
|
||
(void) WriteBlobLSBLong(image,(unsigned int) ept_info.magick);
|
||
(void) WriteBlobLSBLong(image,30);
|
||
(void) WriteBlobLSBLong(image,(unsigned int) ept_info.postscript_length);
|
||
(void) WriteBlobLSBLong(image,0);
|
||
(void) WriteBlobLSBLong(image,0);
|
||
(void) WriteBlobLSBLong(image,(unsigned int) ept_info.postscript_length+30);
|
||
(void) WriteBlobLSBLong(image,(unsigned int) ept_info.tiff_length);
|
||
(void) WriteBlobLSBShort(image,0xffff);
|
||
(void) WriteBlob(image,ept_info.postscript_length,ept_info.postscript);
|
||
(void) WriteBlob(image,ept_info.tiff_length,ept_info.tiff);
|
||
/*
|
||
Relinquish resources.
|
||
*/
|
||
ept_info.postscript=(unsigned char *) RelinquishMagickMemory(
|
||
ept_info.postscript);
|
||
ept_info.tiff=(unsigned char *) RelinquishMagickMemory(ept_info.tiff);
|
||
(void) CloseBlob(image);
|
||
return(MagickTrue);
|
||
}
|