| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % SSSSS CCCC TTTTT % |
| % SS C T % |
| % SSS C T % |
| % SS C T % |
| % SSSSS CCCC T % |
| % % |
| % % |
| % Read Scitex HandShake Image Format % |
| % % |
| % 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/cache.h" |
| #include "MagickCore/exception.h" |
| #include "MagickCore/exception-private.h" |
| #include "MagickCore/image.h" |
| #include "MagickCore/image-private.h" |
| #include "MagickCore/list.h" |
| #include "MagickCore/magick.h" |
| #include "MagickCore/memory_.h" |
| #include "MagickCore/module.h" |
| #include "MagickCore/monitor.h" |
| #include "MagickCore/monitor-private.h" |
| #include "MagickCore/pixel-accessor.h" |
| #include "MagickCore/quantum-private.h" |
| #include "MagickCore/static.h" |
| #include "MagickCore/string_.h" |
| #include "MagickCore/string-private.h" |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % I s S C T % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % IsSCT() returns MagickTrue if the image format type, identified by the |
| % magick string, is SCT. |
| % |
| % The format of the IsSCT method is: |
| % |
| % MagickBooleanType IsSCT(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 IsSCT(const unsigned char *magick,const size_t length) |
| { |
| if (length < 2) |
| return(MagickFalse); |
| if (LocaleNCompare((const char *) magick,"CT",2) == 0) |
| return(MagickTrue); |
| return(MagickFalse); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e a d S C T I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % ReadSCTImage() reads a Scitex 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 ReadSCTImage method is: |
| % |
| % Image *ReadSCTImage(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 *ReadSCTImage(const ImageInfo *image_info,ExceptionInfo *exception) |
| { |
| char |
| magick[2]; |
| |
| Image |
| *image; |
| |
| MagickBooleanType |
| status; |
| |
| double |
| height, |
| width; |
| |
| int |
| c; |
| |
| Quantum |
| pixel; |
| |
| register ssize_t |
| i, |
| x; |
| |
| register Quantum |
| *q; |
| |
| ssize_t |
| count, |
| y; |
| |
| unsigned char |
| buffer[768]; |
| |
| size_t |
| separations, |
| separations_mask, |
| units; |
| |
| /* |
| 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); |
| } |
| /* |
| Read control block. |
| */ |
| memset(magick,0,sizeof(magick)); |
| memset(buffer,0,sizeof(buffer)); |
| count=ReadBlob(image,80,buffer); |
| (void) count; |
| count=ReadBlob(image,2,(unsigned char *) magick); |
| if ((LocaleNCompare((char *) magick,"CT",2) != 0) && |
| (LocaleNCompare((char *) magick,"LW",2) != 0) && |
| (LocaleNCompare((char *) magick,"BM",2) != 0) && |
| (LocaleNCompare((char *) magick,"PG",2) != 0) && |
| (LocaleNCompare((char *) magick,"TX",2) != 0)) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| if ((LocaleNCompare((char *) magick,"LW",2) == 0) || |
| (LocaleNCompare((char *) magick,"BM",2) == 0) || |
| (LocaleNCompare((char *) magick,"PG",2) == 0) || |
| (LocaleNCompare((char *) magick,"TX",2) == 0)) |
| ThrowReaderException(CoderError,"OnlyContinuousTonePictureSupported"); |
| count=ReadBlob(image,174,buffer); |
| count=ReadBlob(image,768,buffer); |
| /* |
| Read paramter block. |
| */ |
| units=1UL*ReadBlobByte(image); |
| if (units == 0) |
| image->units=PixelsPerCentimeterResolution; |
| separations=1UL*ReadBlobByte(image); |
| separations_mask=ReadBlobMSBShort(image); |
| count=ReadBlob(image,14,buffer); |
| buffer[14]='\0'; |
| height=StringToDouble((char *) buffer,(char **) NULL); |
| count=ReadBlob(image,14,buffer); |
| width=StringToDouble((char *) buffer,(char **) NULL); |
| count=ReadBlob(image,12,buffer); |
| buffer[12]='\0'; |
| image->rows=StringToUnsignedLong((char *) buffer); |
| count=ReadBlob(image,12,buffer); |
| image->columns=StringToUnsignedLong((char *) buffer); |
| count=ReadBlob(image,200,buffer); |
| count=ReadBlob(image,768,buffer); |
| if (separations_mask == 0x0f) |
| SetImageColorspace(image,CMYKColorspace,exception); |
| if ((image->columns < 1) || (image->rows < 1) || |
| (width < MagickEpsilon) || (height < MagickEpsilon)) |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| image->resolution.x=1.0*image->columns/width; |
| image->resolution.y=1.0*image->rows/height; |
| if (image_info->ping != MagickFalse) |
| { |
| (void) CloseBlob(image); |
| return(GetFirstImageInList(image)); |
| } |
| status=SetImageExtent(image,image->columns,image->rows,exception); |
| if (status == MagickFalse) |
| return(DestroyImageList(image)); |
| /* |
| Convert SCT raster image to pixel packets. |
| */ |
| c=0; |
| for (y=0; y < (ssize_t) image->rows; y++) |
| { |
| for (i=0; i < (ssize_t) separations; i++) |
| { |
| q=GetAuthenticPixels(image,0,y,image->columns,1,exception); |
| if (q == (Quantum *) NULL) |
| break; |
| for (x=0; x < (ssize_t) image->columns; x++) |
| { |
| c=ReadBlobByte(image); |
| if (c == EOF) |
| break; |
| pixel=(Quantum) ScaleCharToQuantum((unsigned char) c); |
| if (image->colorspace == CMYKColorspace) |
| pixel=(Quantum) (QuantumRange-pixel); |
| switch (i) |
| { |
| case 0: |
| { |
| SetPixelRed(image,pixel,q); |
| SetPixelGreen(image,pixel,q); |
| SetPixelBlue(image,pixel,q); |
| break; |
| } |
| case 1: |
| { |
| SetPixelGreen(image,pixel,q); |
| break; |
| } |
| case 2: |
| { |
| SetPixelBlue(image,pixel,q); |
| break; |
| } |
| case 3: |
| { |
| if (image->colorspace == CMYKColorspace) |
| SetPixelBlack(image,pixel,q); |
| break; |
| } |
| } |
| q+=GetPixelChannels(image); |
| } |
| if (x < (ssize_t) image->columns) |
| break; |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| break; |
| if ((image->columns % 2) != 0) |
| (void) ReadBlobByte(image); /* pad */ |
| } |
| if (i < (ssize_t) separations) |
| break; |
| status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y, |
| image->rows); |
| if (status == MagickFalse) |
| break; |
| } |
| if (EOFBlob(image) != MagickFalse) |
| ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile", |
| image->filename); |
| (void) CloseBlob(image); |
| return(GetFirstImageInList(image)); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e g i s t e r S C T I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % RegisterSCTImage() adds attributes for the SCT 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 RegisterSCTImage method is: |
| % |
| % size_t RegisterSCTImage(void) |
| % |
| */ |
| ModuleExport size_t RegisterSCTImage(void) |
| { |
| MagickInfo |
| *entry; |
| |
| entry=AcquireMagickInfo("SCT","SCT","Scitex HandShake"); |
| entry->decoder=(DecodeImageHandler *) ReadSCTImage; |
| entry->magick=(IsImageFormatHandler *) IsSCT; |
| entry->flags^=CoderAdjoinFlag; |
| (void) RegisterMagickInfo(entry); |
| return(MagickImageCoderSignature); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % U n r e g i s t e r S C T I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % UnregisterSCTImage() removes format registrations made by the |
| % SCT module from the list of supported formats. |
| % |
| % The format of the UnregisterSCTImage method is: |
| % |
| % UnregisterSCTImage(void) |
| % |
| */ |
| ModuleExport void UnregisterSCTImage(void) |
| { |
| (void) UnregisterMagickInfo("SCT"); |
| } |
