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DEFINITIONS
This source file includes following definitions.
- WMFReadBlob
- WMFSeekBlob
- WMFTellBlob
- ReadWMFImage
- RegisterWMFImage
- UnregisterWMFImage
/*
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% Read Windows Metafile Format %
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% Software Design %
% John Cristy %
% December 2000 %
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% Copyright 1999-2011 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. %
% %
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*/
/*
Include declarations.
*/
#include "magick/studio.h"
#include "magick/property.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/color.h"
#include "magick/color-private.h"
#include "magick/constitute.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/image.h"
#include "magick/image-private.h"
#include "magick/list.h"
#include "magick/log.h"
#include "magick/magick.h"
#include "magick/memory_.h"
#include "magick/monitor.h"
#include "magick/monitor-private.h"
#include "magick/paint.h"
#include "magick/quantum-private.h"
#include "magick/static.h"
#include "magick/string_.h"
#include "magick/module.h"
#include "magick/type.h"
#include "magick/module.h"
#include "wand/MagickWand.h"
#if defined(MAGICKCORE_WMF_DELEGATE)
#include "libwmf/api.h"
#include "libwmf/eps.h"
/*
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% ReadWMFImage() reads an Windows Metafile 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 ReadWMFImage method is:
%
% Image *ReadWMFImage(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 int WMFReadBlob(void *image)
{
return(ReadBlobByte((Image *) image));
}
static int WMFSeekBlob(void *image,long offset)
{
return((int) SeekBlob((Image *) image,(MagickOffsetType) offset,SEEK_SET));
}
static long WMFTellBlob(void *image)
{
return((long) TellBlob((Image*) image));
}
static Image *ReadWMFImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
char
filename[MaxTextExtent];
int
unique_file;
FILE
*file;
Image
*image;
ImageInfo
*read_info;
MagickBooleanType
status;
size_t
flags;
wmfAPI
*wmf_info;
wmfAPI_Options
options;
wmfD_Rect
bounding_box;
wmf_eps_t
*eps_info;
wmf_error_t
wmf_status;
/*
Read WMF image.
*/
image=AcquireImage(image_info);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
wmf_info=(wmfAPI *) NULL;
flags=0;
flags|=WMF_OPT_IGNORE_NONFATAL;
flags|=WMF_OPT_FUNCTION;
options.function=wmf_eps_function;
wmf_status=wmf_api_create(&wmf_info,(unsigned long) flags,&options);
if (wmf_status != wmf_E_None)
{
if (wmf_info != (wmfAPI *) NULL)
wmf_api_destroy(wmf_info);
ThrowReaderException(DelegateError,"UnableToInitializeWMFLibrary");
}
wmf_status=wmf_bbuf_input(wmf_info,WMFReadBlob,WMFSeekBlob,WMFTellBlob,
(void *) image);
if (wmf_status != wmf_E_None)
{
wmf_api_destroy(wmf_info);
ThrowFileException(exception,FileOpenError,"UnableToOpenFile",
image->filename);
image=DestroyImageList(image);
return((Image *) NULL);
}
wmf_status=wmf_scan(wmf_info,0,&bounding_box);
if (wmf_status != wmf_E_None)
{
wmf_api_destroy(wmf_info);
ThrowReaderException(DelegateError,"FailedToScanFile");
}
eps_info=WMF_EPS_GetData(wmf_info);
file=(FILE *) NULL;
unique_file=AcquireUniqueFileResource(filename);
if (unique_file != -1)
file=fdopen(unique_file,"wb");
if ((unique_file == -1) || (file == (FILE *) NULL))
{
wmf_api_destroy(wmf_info);
ThrowReaderException(FileOpenError,"UnableToCreateTemporaryFile");
}
eps_info->out=wmf_stream_create(wmf_info,file);
eps_info->bbox=bounding_box;
wmf_status=wmf_play(wmf_info,0,&bounding_box);
if (wmf_status != wmf_E_None)
{
wmf_api_destroy(wmf_info);
ThrowReaderException(DelegateError,"FailedToRenderFile");
}
(void) fclose(file);
wmf_api_destroy(wmf_info);
(void) CloseBlob(image);
image=DestroyImage(image);
/*
Read EPS image.
*/
read_info=CloneImageInfo(image_info);
SetImageInfoBlob(read_info,(void *) NULL,0);
(void) FormatMagickString(read_info->filename,MaxTextExtent,"eps:%s",
filename);
image=ReadImage(read_info,exception);
read_info=DestroyImageInfo(read_info);
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,"WMF",MaxTextExtent);
}
(void) RelinquishUniqueFileResource(filename);
return(GetFirstImageInList(image));
}
#endif
/*
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% RegisterWMFImage() adds attributes for the WMF 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 RegisterWMFImage method is:
%
% size_t RegisterWMFImage(void)
%
*/
ModuleExport size_t RegisterWMFImage(void)
{
MagickInfo
*entry;
entry = SetMagickInfo("WMZ");
#if defined(MAGICKCORE_WMF_DELEGATE)
entry->decoder=ReadWMFImage;
#endif
entry->description=ConstantString("Compressed Windows Meta File");
entry->module=ConstantString("WMZ");
(void) RegisterMagickInfo(entry);
entry=SetMagickInfo("WMF");
#if defined(MAGICKCORE_WMF_DELEGATE)
entry->decoder=ReadWMFImage;
#endif
entry->description=ConstantString("Windows Meta File");
entry->module=ConstantString("WMF");
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
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% U n r e g i s t e r W M F I m a g e %
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% UnregisterWMFImage() removes format registrations made by the
% WMF module from the list of supported formats.
%
% The format of the UnregisterWMFImage method is:
%
% UnregisterWMFImage(void)
%
*/
ModuleExport void UnregisterWMFImage(void)
{
(void) UnregisterMagickInfo("WMZ");
(void) UnregisterMagickInfo("WMF");
}