/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % % % FFFFF L IIIII FFFFF % % F L I F % % FFF L I FFF % % F L I F % % F LLLLL IIIII F % % % % % % Support FilmLight Image Format % % % % Software Design % % Cristy % % November 2020 % % % % % % 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. % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % */ /* Include declarations. */ #include "MagickCore/studio.h" #include "MagickCore/attribute.h" #include "MagickCore/blob.h" #include "MagickCore/blob-private.h" #include "MagickCore/cache.h" #include "MagickCore/color-private.h" #include "MagickCore/colormap.h" #include "MagickCore/colorspace.h" #include "MagickCore/colorspace-private.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/monitor.h" #include "MagickCore/monitor-private.h" #include "MagickCore/quantum-private.h" #include "MagickCore/static.h" #include "MagickCore/string_.h" #include "MagickCore/module.h" /* Forward declarations. */ static MagickBooleanType WriteFL32Image(const ImageInfo *,Image *,ExceptionInfo *); /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % I s F L 3 2 % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % IsFL32() returns MagickTrue if the image format type, identified by the % magick string, is FL32. % % The format of the IsFL32 method is: % % MagickBooleanType IsFL32(const unsigned char *magick,const size_t extent) % % A description of each parameter follows: % % o magick: compare image format pattern against these bytes. % % o extent: Specifies the extent of the magick string. % */ static MagickBooleanType IsFL32(const unsigned char *magick,const size_t extent) { if (extent < 4) return(MagickFalse); if (LocaleNCompare((char *) magick,"FL32",4) == 0) return(MagickTrue); return(MagickFalse); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e a d F L 3 2 I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % ReadFL32Image() reads an image of raw bits in LSB order 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 ReadFL32Image method is: % % Image *ReadFL32Image(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 *ReadFL32Image(const ImageInfo *image_info, ExceptionInfo *exception) { Image *image; QuantumInfo *quantum_info; QuantumType quantum_type; MagickBooleanType status; size_t extent; ssize_t count, y; unsigned char *pixels; unsigned int magic; /* 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); } magic=ReadBlobLSBLong(image); if (magic != 842222662) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); image->depth=32; image->endian=LSBEndian; image->rows=(size_t) ReadBlobLSBLong(image); image->columns=(size_t) ReadBlobLSBLong(image); image->number_channels=(size_t) ReadBlobLSBLong(image); if ((image->columns == 0) || (image->rows == 0) || (image->number_channels == 0) || (image->number_channels >= MaxPixelChannels)) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); if (image_info->ping != MagickFalse) { (void) CloseBlob(image); return(GetFirstImageInList(image)); } switch (image->number_channels) { case 1: { image->colorspace=GRAYColorspace; quantum_type=GrayQuantum; break; } case 2: { image->colorspace=GRAYColorspace; image->alpha_trait=BlendPixelTrait; quantum_type=GrayAlphaQuantum; break; } case 3: { quantum_type=RGBQuantum; break; } case 4: { image->alpha_trait=BlendPixelTrait; quantum_type=RGBAQuantum; break; } default: { quantum_type=RGBQuantum; image->number_meta_channels=image->number_channels-3; break; } } status=SetImageExtent(image,image->columns,image->rows,exception); if (status == MagickFalse) return(DestroyImageList(image)); /* Convert FL32 image to pixel packets. */ quantum_info=AcquireQuantumInfo(image_info,image); if (quantum_info == (QuantumInfo *) NULL) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); status=SetQuantumFormat(image,quantum_info,FloatingPointQuantumFormat); extent=GetQuantumExtent(image,quantum_info,quantum_type); pixels=GetQuantumPixels(quantum_info); for (y=0; y < (ssize_t) image->rows; y++) { const void *stream; Quantum *magick_restrict q; q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); if (q == (Quantum *) NULL) break; stream=ReadBlobStream(image,extent,pixels,&count); if (count != (ssize_t) extent) break; (void) ImportQuantumPixels(image,(CacheView *) NULL,quantum_info, quantum_type,(unsigned char *) stream,exception); if (SyncAuthenticPixels(image,exception) == MagickFalse) break; if (SetImageProgress(image,LoadImageTag,y,image->rows) == MagickFalse) break; } SetQuantumImageType(image,quantum_type); quantum_info=DestroyQuantumInfo(quantum_info); if (y < (ssize_t) image->rows) ThrowReaderException(CorruptImageError,"UnableToReadImageData"); if (EOFBlob(image) != MagickFalse) ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile", image->filename); (void) CloseBlob(image); return(GetFirstImageInList(image)); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e g i s t e r F L 3 2 I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % RegisterFL32Image() adds attributes for the FL32 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 RegisterFL32Image method is: % % size_t RegisterFL32Image(void) % */ ModuleExport size_t RegisterFL32Image(void) { MagickInfo *entry; entry=AcquireMagickInfo("FL32","FL32","FilmLight"); entry->decoder=(DecodeImageHandler *) ReadFL32Image; entry->encoder=(EncodeImageHandler *) WriteFL32Image; entry->magick=(IsImageFormatHandler *) IsFL32; entry->flags|=CoderRawSupportFlag; entry->flags^=CoderAdjoinFlag; (void) RegisterMagickInfo(entry); return(MagickImageCoderSignature); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % U n r e g i s t e r F L 3 2 I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % UnregisterFL32Image() removes format registrations made by the % FL32 module from the list of supported formats. % % The format of the UnregisterFL32Image method is: % % UnregisterFL32Image(void) % */ ModuleExport void UnregisterFL32Image(void) { (void) UnregisterMagickInfo("FL32"); } /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % W r i t e F L 3 2 I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % WriteFL32Image() writes an image of raw bits in LSB order to a file. % % The format of the WriteFL32Image method is: % % MagickBooleanType WriteFL32Image(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 WriteFL32Image(const ImageInfo *image_info, Image *image,ExceptionInfo *exception) { MagickBooleanType status; QuantumInfo *quantum_info; QuantumType quantum_type; const Quantum *p; size_t extent; ssize_t count, y; unsigned char *pixels; /* Open output image file. */ 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); (void) WriteBlobLSBLong(image,842222662U); (void) WriteBlobLSBLong(image,(unsigned int) image->rows); (void) WriteBlobLSBLong(image,(unsigned int) image->columns); (void) WriteBlobLSBLong(image,(unsigned int) image->number_channels); image->endian=LSBEndian; image->depth=32; switch (image->number_channels) { case 1: { quantum_type=GrayQuantum; break; } case 2: { quantum_type=GrayAlphaQuantum; break; } case 3: { quantum_type=RGBQuantum; break; } case 4: { quantum_type=RGBAQuantum; break; } default: { quantum_type=RGBQuantum; break; } } quantum_info=AcquireQuantumInfo(image_info,image); if (quantum_info == (QuantumInfo *) NULL) ThrowWriterException(ImageError,"MemoryAllocationFailed"); status=SetQuantumFormat(image,quantum_info,FloatingPointQuantumFormat); pixels=(unsigned char *) GetQuantumPixels(quantum_info); for (y=0; y < (ssize_t) image->rows; y++) { p=GetVirtualPixels(image,0,y,image->columns,1,exception); if (p == (const Quantum *) NULL) break; extent=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info, quantum_type,pixels,exception); count=WriteBlob(image,extent,pixels); if (count != (ssize_t) extent) break; status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y, image->rows); if (status == MagickFalse) break; } quantum_info=DestroyQuantumInfo(quantum_info); if (y < (ssize_t) image->rows) ThrowWriterException(CorruptImageError,"UnableToWriteImageData"); (void) CloseBlob(image); return(status); }