| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % V V IIIII CCCC AAA RRRR % |
| % V V I C A A R R % |
| % V V I C AAAAA RRRR % |
| % V V I C A A R R % |
| % V IIIII CCCC A A R R % |
| % % |
| % % |
| % Read/Write VICAR Rasterfile Format % |
| % % |
| % Software Design % |
| % John Cristy % |
| % July 1992 % |
| % % |
| % % |
| % Copyright 1999-2010 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. % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % |
| */ |
| |
| /* |
| Include declarations. |
| */ |
| #include "magick/studio.h" |
| #include "magick/blob.h" |
| #include "magick/blob-private.h" |
| #include "magick/cache.h" |
| #include "magick/colormap.h" |
| #include "magick/colorspace.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/magick.h" |
| #include "magick/memory_.h" |
| #include "magick/module.h" |
| #include "magick/monitor.h" |
| #include "magick/monitor-private.h" |
| #include "magick/quantum-private.h" |
| #include "magick/quantum-private.h" |
| #include "magick/static.h" |
| #include "magick/string_.h" |
| #include "magick/string-private.h" |
| |
| /* |
| Forward declarations. |
| */ |
| static MagickBooleanType |
| WriteVICARImage(const ImageInfo *,Image *); |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % I s V I C A R % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % IsVICAR() returns MagickTrue if the image format type, identified by the |
| % magick string, is VICAR. |
| % |
| % The format of the IsVICAR method is: |
| % |
| % MagickBooleanType IsVICAR(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 IsVICAR(const unsigned char *magick, |
| const size_t length) |
| { |
| if (length < 14) |
| return(MagickFalse); |
| if (LocaleNCompare((const char *) magick,"LBLSIZE",7) == 0) |
| return(MagickTrue); |
| if (LocaleNCompare((const char *) magick,"NJPL1I",6) == 0) |
| return(MagickTrue); |
| if (LocaleNCompare((const char *) magick,"PDS_VERSION_ID",14) == 0) |
| return(MagickTrue); |
| return(MagickFalse); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e a d V I C A R I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % ReadVICARImage() reads a VICAR 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 ReadVICARImage method is: |
| % |
| % Image *ReadVICARImage(const ImageInfo *image_info, |
| % ExceptionInfo *exception) |
| % |
| % A description of each parameter follows: |
| % |
| % o image: Method ReadVICARImage returns a pointer to the image after |
| % reading. A null image is returned if there is a memory shortage or if |
| % the image cannot be read. |
| % |
| % o image_info: the image info. |
| % |
| % o exception: return any errors or warnings in this structure. |
| % |
| % |
| */ |
| static Image *ReadVICARImage(const ImageInfo *image_info, |
| ExceptionInfo *exception) |
| { |
| char |
| keyword[MaxTextExtent], |
| value[MaxTextExtent]; |
| |
| Image |
| *image; |
| |
| int |
| c; |
| |
| ssize_t |
| y; |
| |
| MagickBooleanType |
| status, |
| value_expected; |
| |
| QuantumInfo |
| *quantum_info; |
| |
| QuantumType |
| quantum_type; |
| |
| register PixelPacket |
| *q; |
| |
| ssize_t |
| count; |
| |
| size_t |
| length; |
| |
| unsigned char |
| *pixels; |
| |
| /* |
| 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); |
| } |
| /* |
| Decode image header. |
| */ |
| c=ReadBlobByte(image); |
| count=1; |
| if (c == EOF) |
| { |
| image=DestroyImage(image); |
| return((Image *) NULL); |
| } |
| length=0; |
| image->columns=0; |
| image->rows=0; |
| while (isgraph(c) && ((image->columns == 0) || (image->rows == 0))) |
| { |
| if (isalnum(c) == MagickFalse) |
| { |
| c=ReadBlobByte(image); |
| count++; |
| } |
| else |
| { |
| register char |
| *p; |
| |
| /* |
| Determine a keyword and its value. |
| */ |
| p=keyword; |
| do |
| { |
| if ((size_t) (p-keyword) < (MaxTextExtent-1)) |
| *p++=c; |
| c=ReadBlobByte(image); |
| count++; |
| } while (isalnum(c) || (c == '_')); |
| *p='\0'; |
| value_expected=MagickFalse; |
| while ((isspace((int) ((unsigned char) c)) != 0) || (c == '=')) |
| { |
| if (c == '=') |
| value_expected=MagickTrue; |
| c=ReadBlobByte(image); |
| count++; |
| } |
| if (value_expected == MagickFalse) |
| continue; |
| p=value; |
| while (isalnum(c)) |
| { |
| if ((size_t) (p-value) < (MaxTextExtent-1)) |
| *p++=c; |
| c=ReadBlobByte(image); |
| count++; |
| } |
| *p='\0'; |
| /* |
| Assign a value to the specified keyword. |
| */ |
| if (LocaleCompare(keyword,"Label_RECORDS") == 0) |
| length=(ssize_t) StringToLong(value); |
| if (LocaleCompare(keyword,"LBLSIZE") == 0) |
| length=(ssize_t) StringToLong(value); |
| if (LocaleCompare(keyword,"RECORD_BYTES") == 0) |
| image->columns=StringToUnsignedLong(value); |
| if (LocaleCompare(keyword,"NS") == 0) |
| image->columns=StringToUnsignedLong(value); |
| if (LocaleCompare(keyword,"LINES") == 0) |
| image->rows=StringToUnsignedLong(value); |
| if (LocaleCompare(keyword,"NL") == 0) |
| image->rows=StringToUnsignedLong(value); |
| } |
| while (isspace((int) ((unsigned char) c)) != 0) |
| { |
| c=ReadBlobByte(image); |
| count++; |
| } |
| } |
| while (count < (ssize_t) length) |
| { |
| c=ReadBlobByte(image); |
| count++; |
| } |
| if ((image->columns == 0) || (image->rows == 0)) |
| ThrowReaderException(CorruptImageError,"NegativeOrZeroImageSize"); |
| image->depth=8; |
| if (AcquireImageColormap(image,256) == MagickFalse) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| if (image_info->ping != MagickFalse) |
| { |
| (void) CloseBlob(image); |
| return(GetFirstImageInList(image)); |
| } |
| /* |
| Read VICAR pixels. |
| */ |
| quantum_type=IndexQuantum; |
| quantum_info=AcquireQuantumInfo(image_info,image); |
| if (quantum_info == (QuantumInfo *) NULL) |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| pixels=GetQuantumPixels(quantum_info); |
| length=GetQuantumExtent(image,quantum_info,IndexQuantum); |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| if (q == (PixelPacket *) NULL) |
| break; |
| count=ReadBlob(image,length,pixels); |
| (void) ImportQuantumPixels(image,(CacheView *) NULL,quantum_info, |
| quantum_type,pixels,exception); |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| SetQuantumImageType(image,quantum_type); |
| quantum_info=DestroyQuantumInfo(quantum_info); |
| if (EOFBlob(image) != MagickFalse) |
| ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile", |
| image->filename); |
| (void) CloseBlob(image); |
| return(GetFirstImageInList(image)); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e g i s t e r V I C A R I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % RegisterVICARImage() adds attributes for the VICAR 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 RegisterVICARImage method is: |
| % |
| % size_t RegisterVICARImage(void) |
| % |
| */ |
| ModuleExport size_t RegisterVICARImage(void) |
| { |
| MagickInfo |
| *entry; |
| |
| entry=SetMagickInfo("VICAR"); |
| entry->decoder=(DecodeImageHandler *) ReadVICARImage; |
| entry->encoder=(EncodeImageHandler *) WriteVICARImage; |
| entry->magick=(IsImageFormatHandler *) IsVICAR; |
| entry->adjoin=MagickFalse; |
| entry->description=ConstantString("VICAR rasterfile format"); |
| entry->module=ConstantString("VICAR"); |
| (void) RegisterMagickInfo(entry); |
| return(MagickImageCoderSignature); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % U n r e g i s t e r V I C A R I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % UnregisterVICARImage() removes format registrations made by the |
| % VICAR module from the list of supported formats. |
| % |
| % The format of the UnregisterVICARImage method is: |
| % |
| % UnregisterVICARImage(void) |
| % |
| */ |
| ModuleExport void UnregisterVICARImage(void) |
| { |
| (void) UnregisterMagickInfo("VICAR"); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % W r i t e V I C A R I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % WriteVICARImage() writes an image in the VICAR rasterfile format. |
| % Vicar files contain a text header, followed by one or more planes of binary |
| % grayscale image data. Vicar files are designed to allow many planes to be |
| % stacked together to form image cubes. This method only writes a single |
| % grayscale plane. |
| % |
| % WriteVICARImage was written contributed by |
| % gorelick@esther.la.asu.edu. |
| % |
| % The format of the WriteVICARImage method is: |
| % |
| % MagickBooleanType WriteVICARImage(const ImageInfo *image_info, |
| % Image *image) |
| % |
| % A description of each parameter follows. |
| % |
| % o image_info: the image info. |
| % |
| % o image: The image. |
| % |
| */ |
| static MagickBooleanType WriteVICARImage(const ImageInfo *image_info, |
| Image *image) |
| { |
| char |
| header[MaxTextExtent]; |
| |
| int |
| y; |
| |
| MagickBooleanType |
| status; |
| |
| QuantumInfo |
| *quantum_info; |
| |
| register const PixelPacket |
| *p; |
| |
| ssize_t |
| count; |
| |
| size_t |
| length; |
| |
| unsigned char |
| *pixels; |
| |
| /* |
| 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); |
| if (image->colorspace != RGBColorspace) |
| (void) TransformImageColorspace(image,RGBColorspace); |
| /* |
| Write header. |
| */ |
| (void) ResetMagickMemory(header,' ',MaxTextExtent); |
| (void) FormatMagickString(header,MaxTextExtent, |
| "LBLSIZE=%.20g FORMAT='BYTE' TYPE='IMAGE' BUFSIZE=20000 DIM=2 EOL=0 " |
| "RECSIZE=%.20g ORG='BSQ' NL=%.20g NS=%.20g NB=1 N1=0 N2=0 N3=0 N4=0 NBB=0 " |
| "NLB=0 TASK='ImageMagick'",(double) MaxTextExtent,(double) image->columns, |
| (double) image->rows,(double) image->columns); |
| (void) WriteBlob(image,MaxTextExtent,(unsigned char *) header); |
| /* |
| Write VICAR pixels. |
| */ |
| image->depth=8; |
| quantum_info=AcquireQuantumInfo(image_info,image); |
| if (quantum_info == (QuantumInfo *) NULL) |
| ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| pixels=GetQuantumPixels(quantum_info); |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); |
| if (p == (const PixelPacket *) NULL) |
| break; |
| length=ExportQuantumPixels(image,(const CacheView *) NULL,quantum_info, |
| GrayQuantum,pixels,&image->exception); |
| count=WriteBlob(image,length,pixels); |
| if (count != (ssize_t) length) |
| break; |
| status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| quantum_info=DestroyQuantumInfo(quantum_info); |
| (void) CloseBlob(image); |
| return(MagickTrue); |
| } |