| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % 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 1999-2020 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 "MagickCore/studio.h" |
| #include "MagickCore/blob.h" |
| #include "MagickCore/blob-private.h" |
| #include "MagickCore/color.h" |
| #include "MagickCore/constitute.h" |
| #include "MagickCore/draw.h" |
| #include "MagickCore/exception.h" |
| #include "MagickCore/exception-private.h" |
| #include "MagickCore/delegate.h" |
| #include "MagickCore/geometry.h" |
| #include "MagickCore/histogram.h" |
| #include "MagickCore/image.h" |
| #include "MagickCore/image-private.h" |
| #include "MagickCore/list.h" |
| #include "MagickCore/magick.h" |
| #include "MagickCore/memory_.h" |
| #include "MagickCore/monitor.h" |
| #include "MagickCore/monitor-private.h" |
| #include "MagickCore/quantize.h" |
| #include "MagickCore/resource_.h" |
| #include "MagickCore/resize.h" |
| #include "MagickCore/quantum-private.h" |
| #include "MagickCore/static.h" |
| #include "MagickCore/string_.h" |
| #include "MagickCore/module.h" |
| #include "MagickCore/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 *,ExceptionInfo *); |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % 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, |
| *tiff_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,exception); |
| 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)) |
| (void) ThrowMagickException(exception,GetMagickModule(),CorruptImageWarning, |
| "InsufficientImageDataInFile","`%s'",image->filename); |
| (void) CloseBlob(image); |
| image=DestroyImage(image); |
| read_info=CloneImageInfo(image_info); |
| read_info->number_scenes=1; |
| read_info->scene=0; |
| (void) CopyMagickString(read_info->magick,"EPS",MagickPathExtent); |
| image=BlobToImage(read_info,postscript_data,ept_info.postscript_length, |
| exception); |
| if (image != (Image *) NULL) |
| { |
| (void) CopyMagickString(image->filename,image_info->filename, |
| MagickPathExtent); |
| (void) CopyMagickString(image->magick,"EPT",MagickPathExtent); |
| } |
| (void) CopyMagickString(read_info->magick,"TIFF",MagickPathExtent); |
| tiff_image=BlobToImage(read_info,tiff_data,ept_info.tiff_length,exception); |
| if (tiff_image != (Image *) NULL) |
| { |
| if (image == (Image *) NULL) |
| image=tiff_image; |
| else |
| AppendImageToList(&image,tiff_image); |
| } |
| read_info=DestroyImageInfo(read_info); |
| ept_info.tiff=(unsigned char *) RelinquishMagickMemory(ept_info.tiff); |
| ept_info.postscript=(unsigned char *) RelinquishMagickMemory( |
| ept_info.postscript); |
| return(GetFirstImageInList(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=AcquireMagickInfo("EPT","EPT", |
| "Encapsulated PostScript with TIFF preview"); |
| entry->decoder=(DecodeImageHandler *) ReadEPTImage; |
| entry->encoder=(EncodeImageHandler *) WriteEPTImage; |
| entry->magick=(IsImageFormatHandler *) IsEPT; |
| entry->flags|=CoderDecoderSeekableStreamFlag; |
| entry->flags^=CoderAdjoinFlag; |
| entry->flags^=CoderBlobSupportFlag; |
| (void) RegisterMagickInfo(entry); |
| entry=AcquireMagickInfo("EPT","EPT2", |
| "Encapsulated PostScript Level II with TIFF preview"); |
| entry->decoder=(DecodeImageHandler *) ReadEPTImage; |
| entry->encoder=(EncodeImageHandler *) WriteEPTImage; |
| entry->magick=(IsImageFormatHandler *) IsEPT; |
| entry->flags^=CoderAdjoinFlag; |
| entry->flags|=CoderDecoderSeekableStreamFlag; |
| entry->flags^=CoderBlobSupportFlag; |
| (void) RegisterMagickInfo(entry); |
| entry=AcquireMagickInfo("EPT","EPT3", |
| "Encapsulated PostScript Level III with TIFF preview"); |
| entry->decoder=(DecodeImageHandler *) ReadEPTImage; |
| entry->encoder=(EncodeImageHandler *) WriteEPTImage; |
| entry->magick=(IsImageFormatHandler *) IsEPT; |
| entry->flags|=CoderDecoderSeekableStreamFlag; |
| entry->flags^=CoderBlobSupportFlag; |
| (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,ExceptionInfo *exception) |
| % |
| % A description of each parameter follows. |
| % |
| % o image_info: the image info. |
| % |
| % o image: The image. |
| % |
| % o exception: return any errors or warnings in this structure. |
| % |
| */ |
| static MagickBooleanType WriteEPTImage(const ImageInfo *image_info,Image *image, |
| ExceptionInfo *exception) |
| { |
| char |
| filename[MagickPathExtent]; |
| |
| 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); |
| assert(exception != (ExceptionInfo *) NULL); |
| assert(exception->signature == MagickCoreSignature); |
| status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception); |
| if (status == MagickFalse) |
| return(status); |
| write_image=CloneImage(image,0,0,MagickTrue,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,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,exception); |
| if (write_image == (Image *) NULL) |
| return(MagickFalse); |
| write_info=CloneImageInfo(image_info); |
| (void) CopyMagickString(write_info->magick,"TIFF",MagickPathExtent); |
| (void) FormatLocaleString(filename,MagickPathExtent,"tiff:%s", |
| write_info->filename); |
| (void) CopyMagickString(write_info->filename,filename,MagickPathExtent); |
| if ((write_image->columns > 512) || (write_image->rows > 512)) |
| { |
| Image |
| *resize_image; |
| |
| resize_image=ResizeImage(write_image,512,512,write_image->filter, |
| exception); |
| if (resize_image != (Image *) NULL) |
| { |
| write_image=DestroyImage(write_image); |
| write_image=resize_image; |
| } |
| } |
| 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_method=IdentifyPaletteImage(write_image, |
| exception) == MagickFalse ? RiemersmaDitherMethod : NoDitherMethod; |
| (void) QuantizeImage(&quantize_info,write_image,exception); |
| } |
| write_info->compression=NoCompression; |
| ept_info.tiff=(unsigned char *) ImageToBlob(write_info,write_image, |
| &ept_info.tiff_length,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); |
| } |
