/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % 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 Image Format % % % % Software Design % % John Cristy % % July 1992 % % % % % % Copyright 1999-2009 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/quantum-private.h" #include "magick/resource_.h" #include "magick/static.h" #include "magick/string_.h" #include "magick/module.h" /* Forward declarations. */ static MagickBooleanType WriteCALSImage(const ImageInfo *,Image *); /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % I s C A L S % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % IsCALS() returns MagickTrue if the image format type, identified by the % magick string, is CALS. % % 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); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e a d C A L S I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % ReadCALSImage() reads an Automated Interchange of Technical Information, % MIL-STD-1840A image file and returns it. It allocates the memorient_y 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 inline size_t WriteCALSLSBLong(FILE *file,const unsigned int value) { unsigned char buffer[4]; buffer[0]=(unsigned char) value; buffer[1]=(unsigned char) (value >> 8); buffer[2]=(unsigned char) (value >> 16); buffer[3]=(unsigned char) (value >> 24); return(fwrite(buffer,1,4,file)); } static Image *ReadCALSImage(const ImageInfo *image_info, ExceptionInfo *exception) { char filename[MaxTextExtent], header[129]; FILE *file; Image *image; ImageInfo *read_info; int c, unique_file; MagickBooleanType status; register long i; size_t length; ssize_t offset, strip_offset; unsigned int 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,"%u",&density); break; } if (LocaleNCompare(header,"rpelcnt:",8) == 0) { (void) sscanf(header+8,"%u,%u",&width,&height); break; } if (LocaleNCompare(header,"rorient:",8) == 0) { (void) sscanf(header+8,"%u,%u",&pel_path,&direction); if (pel_path == 90) orientation=5; else if (pel_path == 90) orientation=3; else if (pel_path == 270) orientation=7; if (direction == 90) orientation++; break; } if (LocaleNCompare(header,"rtype:",6) == 0) { (void) sscanf(header+6,"%u",&type); break; } break; } } } if ((width == 0) || (height == 0) || (type == 0)) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); /* Write CALS facsimile document wrapped as a TIFF image file. */ file=(FILE *) NULL; unique_file=AcquireUniqueFileResource(filename); if (unique_file != -1) file=fdopen(unique_file,"wb"); if ((unique_file == -1) || (file == (FILE *) NULL)) ThrowReaderException(FileOpenError,"UnableToCreateTemporaryFile"); length=fwrite("\111\111\052\000\010\000\000\000\016\000",1,10,file); length=fwrite("\376\000\003\000\001\000\000\000\000\000\000\000",1,12,file); length=fwrite("\000\001\004\000\001\000\000\000",1,8,file); length=WriteCALSLSBLong(file,width); length=fwrite("\001\001\004\000\001\000\000\000",1,8,file); length=WriteCALSLSBLong(file,height); length=fwrite("\002\001\003\000\001\000\000\000\001\000\000\000",1,12,file); length=fwrite("\003\001\003\000\001\000\000\000\004\000\000\000",1,12,file); length=fwrite("\006\001\003\000\001\000\000\000\000\000\000\000",1,12,file); length=fwrite("\021\001\003\000\001\000\000\000",1,8,file); strip_offset=10+(12*14)+4+8; length=WriteCALSLSBLong(file,(unsigned int) strip_offset); length=fwrite("\022\001\003\000\001\000\000\000",1,8,file); length=WriteCALSLSBLong(file,orientation); length=fwrite("\025\001\003\000\001\000\000\000\001\000\000\000",1,12,file); length=fwrite("\026\001\004\000\001\000\000\000",1,8,file); length=WriteCALSLSBLong(file,width); length=fwrite("\027\001\004\000\001\000\000\000\000\000\000\000",1,12,file); offset=(ssize_t) ftell(file)-4; length=fwrite("\032\001\005\000\001\000\000\000",1,8,file); length=WriteCALSLSBLong(file,(unsigned int) (strip_offset-8)); length=fwrite("\033\001\005\000\001\000\000\000",1,8,file); length=WriteCALSLSBLong(file,(unsigned int) (strip_offset-8)); length=fwrite("\050\001\003\000\001\000\000\000\002\000\000\000",1,12,file); length=fwrite("\000\000\000\000",1,4,file); length=WriteCALSLSBLong(file,density); length=WriteCALSLSBLong(file,1); for (length=0; (c=ReadBlobByte(image)) != EOF; length++) (void) fputc(c,file); (void) CloseBlob(image); image=DestroyImage(image); offset=(ssize_t) fseek(file,(long) offset,SEEK_SET); length=WriteCALSLSBLong(file,(unsigned int) length); (void) fclose(file); /* Read TIFF image. */ read_info=CloneImageInfo(image_info); SetImageInfoBlob(read_info,(void *) NULL,0); (void) FormatMagickString(read_info->filename,MaxTextExtent,"tiff:%.1024s", filename); image=ReadImage(read_info,exception); read_info=DestroyImageInfo(read_info); (void) RelinquishUniqueFileResource(filename); if (image == (Image *) NULL) return(image); return(GetFirstImageInList(image)); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e g i s t e r C A L S I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % RegisterCALSImage() adds attributes for the CALS X 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-memorient_y I/O, and a brief description of the format. % % The format of the RegisterCALSImage method is: % % unsigned long RegisterCALSImage(void) % */ ModuleExport unsigned long RegisterCALSImage(void) { MagickInfo *entry; entry=SetMagickInfo("CALS"); entry->decoder=(DecodeImageHandler *) ReadCALSImage; entry->encoder=(EncodeImageHandler *) WriteCALSImage; entry->adjoin=MagickFalse; entry->magick=(IsImageFormatHandler *) IsCALS; entry->description=ConstantString("Automated Interchange of Technical " "Information, MIL-STD-1840A"); entry->module=ConstantString("CALS"); (void) RegisterMagickInfo(entry); return(MagickImageCoderSignature); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % U n r e g i s t e r C A L S I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % 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("CALS"); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % W r i t e C A L S I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % WriteCALSImage() writes an image to a file in CALS type I 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 MagickBooleanType WriteCALSRecord(Image *image,const char *data) { char pad[128]; ssize_t count; register const char *p; register long i; i=0; if (data != (const char *) NULL) { p=data; for (i=0; (i < 128) && (p[i] != '\0'); i++); count=WriteBlob(image,(size_t) i,(unsigned char *) data); } if (i < 128) { /* Pad CALS record. */ i=128-i; (void) ResetMagickMemory(pad,' ',(size_t) i); count=WriteBlob(image,(size_t) i,(unsigned char *) pad); } return(count); } static MagickBooleanType WriteCALSImage(const ImageInfo *image_info, Image *image) { char buffer[129]; MagickBooleanType status; register long i; ssize_t count; unsigned long density, orient_x, orient_y; /* 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"); 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"); switch (image->orientation) { case TopRightOrientation: { orient_x=180; orient_y=270; break; } case BottomRightOrientation: { orient_x=180; orient_y=90; break; } case BottomLeftOrientation: orient_x=0; orient_y=90; break; case LeftTopOrientation: { orient_x=270; orient_y=0; break; } case RightTopOrientation: { orient_x=270; orient_y=180; break; } case RightBottomOrientation: { orient_x=90; orient_y=180; break; } case LeftBottomOrientation: { orient_x=90; orient_y=0; break; } default: { orient_x=0; orient_y=270; } } (void) FormatMagickString(buffer,MaxTextExtent,"rorient: %03ld,%03ld", orient_x,orient_y); count=WriteCALSRecord(image,buffer); (void) FormatMagickString(buffer,MaxTextExtent,"rpelcnt: %06lu,%06lu", image->columns,image->rows); count=WriteCALSRecord(image,buffer); density=200; if (image_info->density != (char *) NULL) { GeometryInfo geometry_info; (void) ParseGeometry(image_info->density,&geometry_info); density=(unsigned long) (geometry_info.rho+0.5); } (void) FormatMagickString(buffer,MaxTextExtent,"rdensty: %04lu",density); count=WriteCALSRecord(image,buffer); count=WriteCALSRecord(image,"notes: NONE"); (void) ResetMagickMemory(buffer,' ',128); for (i=0; i < 5; i++) (void) WriteBlob(image,128,(unsigned char *) buffer); status=Huffman2DEncodeImage(image_info,image,image); (void) CloseBlob(image); return(status); }