| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % CCCC U U BBBB EEEEE % |
| % C U U B B E % |
| % C U U BBBB EEE % |
| % C U U B B E % |
| % CCCC UUU BBBB EEEEE % |
| % % |
| % % |
| % Cube LUT Image Format % |
| % % |
| % Software Design % |
| % Cristy % |
| % July 2018 % |
| % % |
| % % |
| % Copyright 1999-2021 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. % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % See Cube LUT specification 1.0 @ |
| % https://wwwimages2.adobe.com/content/dam/acom/en/products/speedgrade/cc/pdfs/cube-lut-specification-1.0.pdf |
| % |
| */ |
| |
| /* |
| Include declarations. |
| */ |
| #include "MagickCore/studio.h" |
| #include "MagickCore/blob.h" |
| #include "MagickCore/blob-private.h" |
| #include "MagickCore/cache.h" |
| #include "MagickCore/colorspace.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/property.h" |
| #include "MagickCore/quantum-private.h" |
| #include "MagickCore/resource_.h" |
| #include "MagickCore/static.h" |
| #include "MagickCore/string_.h" |
| #include "MagickCore/string-private.h" |
| #include "MagickCore/thread-private.h" |
| #include "MagickCore/token.h" |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e a d C U B E I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % ReadCUBEImage() creates a Cube color lookup table image 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 ReadCUBEImage method is: |
| % |
| % Image *ReadCUBEImage(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 *ReadCUBEImage(const ImageInfo *image_info, |
| ExceptionInfo *exception) |
| { |
| #define FlattenCube(level,b,g,r) \ |
| ((ssize_t) ((b)*(level)*(level)+(g)*(level)+(r))) |
| |
| typedef struct _CubePixel |
| { |
| float |
| r, |
| g, |
| b; |
| } CubePixel; |
| |
| char |
| *buffer, |
| token[MagickPathExtent], |
| value[MagickPathExtent]; |
| |
| CubePixel |
| *cube; |
| |
| Image |
| *image; |
| |
| MagickBooleanType |
| status; |
| |
| MemoryInfo |
| *cube_info; |
| |
| char |
| *p; |
| |
| size_t |
| cube_level, |
| hald_level; |
| |
| ssize_t |
| b, |
| i, |
| n; |
| |
| /* |
| Read CUBE color lookup table. |
| */ |
| 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); |
| } |
| cube_level=0; |
| cube_info=(MemoryInfo *) NULL; |
| cube=(CubePixel *) NULL; |
| n=0; |
| buffer=AcquireString(""); |
| *buffer='\0'; |
| p=buffer; |
| while (ReadBlobString(image,p) != (char *) NULL) |
| { |
| const char |
| *q; |
| |
| q=p; |
| (void) GetNextToken(q,&q,MagickPathExtent,token); |
| if ((*token == '#') || (*token == '\0')) |
| continue; |
| if (((LocaleCompare(token,"LUT_1D_SIZE") == 0) || |
| (LocaleCompare(token,"LUT_3D_SIZE") == 0)) && |
| (cube_info == (MemoryInfo *) NULL)) |
| { |
| (void) GetNextToken(q,&q,MagickPathExtent,value); |
| cube_level=(size_t) StringToLong(value); |
| if (LocaleCompare(token,"LUT_1D_SIZE") == 0) |
| cube_level=(size_t) ceil(pow((double) cube_level,1.0/3.0)); |
| if ((cube_level < 2) || (cube_level > 256)) |
| { |
| buffer=DestroyString(buffer); |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| } |
| cube_info=AcquireVirtualMemory(cube_level*cube_level,cube_level* |
| sizeof(*cube)); |
| if (cube_info == (MemoryInfo *) NULL) |
| { |
| buffer=DestroyString(buffer); |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| } |
| cube=(CubePixel *) GetVirtualMemoryBlob(cube_info); |
| (void) memset(cube,0,cube_level*cube_level*cube_level*sizeof(*cube)); |
| } |
| else |
| if (LocaleCompare(token,"TITLE ") == 0) |
| { |
| (void) GetNextToken(q,&q,MagickPathExtent,value); |
| (void) SetImageProperty(image,"title",value,exception); |
| } |
| else |
| if (cube_level != 0) |
| { |
| char |
| *r; |
| |
| if (n >= (ssize_t) (cube_level*cube_level*cube_level)) |
| break; |
| r=buffer; |
| cube[n].r=StringToDouble(r,&r); |
| cube[n].g=StringToDouble(r,&r); |
| cube[n].b=StringToDouble(r,&r); |
| n++; |
| } |
| else |
| if (('+' < *buffer) && (*buffer < ':')) |
| break; |
| } |
| buffer=DestroyString(buffer); |
| if (cube_level == 0) |
| { |
| if (cube_info != (MemoryInfo *) NULL) |
| cube_info=RelinquishVirtualMemory(cube_info); |
| ThrowReaderException(CorruptImageError,"ImproperImageHeader"); |
| } |
| /* |
| Convert CUBE image to HALD. |
| */ |
| status=MagickTrue; |
| hald_level=image_info->scene; |
| if ((hald_level < 2) || (hald_level > 256)) |
| hald_level=8; |
| image->columns=(size_t) (hald_level*hald_level*hald_level); |
| image->rows=(size_t) (hald_level*hald_level*hald_level); |
| status=SetImageExtent(image,image->columns,image->rows,exception); |
| if (status == MagickFalse) |
| { |
| cube_info=RelinquishVirtualMemory(cube_info); |
| return(DestroyImageList(image)); |
| } |
| for (b=0; b < (ssize_t) (hald_level*hald_level); b++) |
| { |
| ssize_t |
| g; |
| |
| if (status == MagickFalse) |
| continue; |
| for (g=0; g < (ssize_t) (hald_level*hald_level); g++) |
| { |
| Quantum |
| *magick_restrict q; |
| |
| ssize_t |
| r; |
| |
| if (status == MagickFalse) |
| continue; |
| q=QueueAuthenticPixels(image,(g % hald_level)*(hald_level*hald_level), |
| (b*hald_level)+((g/hald_level) % (hald_level*hald_level)),hald_level* |
| hald_level,1,exception); |
| if (q == (Quantum *) NULL) |
| { |
| status=MagickFalse; |
| continue; |
| } |
| for (r=0; r < (ssize_t) (hald_level*hald_level); r++) |
| { |
| CubePixel |
| index, |
| next, |
| offset, |
| scale; |
| |
| offset.r=(PerceptibleReciprocal((double) (hald_level*hald_level)-1.0)* |
| r)*(cube_level-1.0); |
| index.r=floor(offset.r); |
| scale.r=offset.r-index.r; |
| next.r=index.r+1; |
| if ((size_t) index.r == (cube_level-1)) |
| next.r=index.r; |
| offset.g=(PerceptibleReciprocal(((double) hald_level*hald_level)-1.0)* |
| g)*(cube_level-1.0); |
| index.g=floor(offset.g); |
| scale.g=offset.g-index.g; |
| next.g=index.g+1; |
| if ((size_t) index.g == (cube_level-1)) |
| next.g=index.g; |
| offset.b=(PerceptibleReciprocal(((double) hald_level*hald_level)-1.0)* |
| b)*(cube_level-1.0); |
| index.b=floor(offset.b); |
| scale.b=offset.b-index.b; |
| next.b=index.b+1; |
| if ((size_t) index.b == (cube_level-1)) |
| next.b=index.b; |
| SetPixelRed(image,ClampToQuantum(QuantumRange*( |
| cube[FlattenCube(cube_level,index.b,index.g,index.r)].r+scale.r*( |
| cube[FlattenCube(cube_level,index.b,index.g,next.r)].r- |
| cube[FlattenCube(cube_level,index.b,index.g,index.r)].r))),q); |
| SetPixelGreen(image,ClampToQuantum(QuantumRange*( |
| cube[FlattenCube(cube_level,index.b,index.g,index.r)].g+scale.g*( |
| cube[FlattenCube(cube_level,index.b,next.g,index.r)].g- |
| cube[FlattenCube(cube_level,index.b,index.g,index.r)].g))),q); |
| SetPixelBlue(image,ClampToQuantum(QuantumRange*( |
| cube[FlattenCube(cube_level,index.b,index.g,index.r)].b+scale.b*( |
| cube[FlattenCube(cube_level,next.b,index.g,index.r)].b- |
| cube[FlattenCube(cube_level,index.b,index.g,index.r)].b))),q); |
| q+=GetPixelChannels(image); |
| } |
| if (SyncAuthenticPixels(image,exception) == MagickFalse) |
| status=MagickFalse; |
| } |
| } |
| cube_info=RelinquishVirtualMemory(cube_info); |
| (void) CloseBlob(image); |
| if (status == MagickFalse) |
| return(DestroyImageList(image)); |
| if (image_info->scene != 0) |
| for (i=0; i < (ssize_t) image_info->scene; i++) |
| AppendImageToList(&image,CloneImage(image,0,0,MagickTrue,exception)); |
| return(GetFirstImageInList(image)); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % R e g i s t e r H A L D I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % RegisterCUBEImage() adds attributes for the Hald color lookup table 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 RegisterCUBEImage method is: |
| % |
| % size_t RegisterCUBEImage(void) |
| % |
| */ |
| ModuleExport size_t RegisterCUBEImage(void) |
| { |
| MagickInfo |
| *entry; |
| |
| entry=AcquireMagickInfo("CUBE","CUBE","Cube LUT"); |
| entry->decoder=(DecodeImageHandler *) ReadCUBEImage; |
| entry->flags^=CoderAdjoinFlag; |
| entry->format_type=ImplicitFormatType; |
| entry->flags|=CoderRawSupportFlag; |
| entry->flags|=CoderEndianSupportFlag; |
| (void) RegisterMagickInfo(entry); |
| return(MagickImageCoderSignature); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % U n r e g i s t e r H A L D I m a g e % |
| % % |
| % % |
| % % |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % |
| % UnregisterCUBEImage() removes format registrations made by the |
| % CUBE module from the list of supported formats. |
| % |
| % The format of the UnregisterCUBEImage method is: |
| % |
| % UnregisterCUBEImage(void) |
| % |
| */ |
| ModuleExport void UnregisterCUBEImage(void) |
| { |
| (void) UnregisterMagickInfo("CUBE"); |
| } |
