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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% %
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% FFFFF AAA RRRR BBBB FFFFF EEEEE L DDDD %
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% F A A R R B B F E L D D %
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% FFF AAAAA RRRR BBBB FFF EEE L D D %
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% F A A R R B B F E L D D %
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% F A A R R BBBB F EEEEE LLLLL DDDD %
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% %
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% %
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% Support Farbfeld Image Format %
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% %
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% Software Design %
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% Dirk Lemstra %
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% November 2020 %
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% %
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% %
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% Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
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% dedicated to making software imaging solutions freely available. %
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% %
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% You may not use this file except in compliance with the License. You may %
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% obtain a copy of the License at %
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% %
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% https://imagemagick.org/script/license.php %
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% %
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% Unless required by applicable law or agreed to in writing, software %
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% distributed under the License is distributed on an "AS IS" BASIS, %
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% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
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% See the License for the specific language governing permissions and %
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% limitations under the License. %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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%
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*/
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/*
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Include declarations.
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*/
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#include "MagickCore/studio.h"
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#include "MagickCore/attribute.h"
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#include "MagickCore/blob.h"
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#include "MagickCore/blob-private.h"
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#include "MagickCore/cache.h"
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#include "MagickCore/color-private.h"
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#include "MagickCore/colormap.h"
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#include "MagickCore/colorspace.h"
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#include "MagickCore/colorspace-private.h"
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#include "MagickCore/exception.h"
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#include "MagickCore/exception-private.h"
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#include "MagickCore/image.h"
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#include "MagickCore/image-private.h"
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#include "MagickCore/list.h"
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#include "MagickCore/magick.h"
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#include "MagickCore/memory_.h"
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#include "MagickCore/monitor.h"
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#include "MagickCore/monitor-private.h"
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#include "MagickCore/quantum-private.h"
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#include "MagickCore/static.h"
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#include "MagickCore/string_.h"
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#include "MagickCore/module.h"
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/*
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Forward declarations.
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*/
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static MagickBooleanType
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WriteFARBFELDImage(const ImageInfo *,Image *,ExceptionInfo *);
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% I s F A R B F E L D %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% IsFARBFELD() returns MagickTrue if the image format type, identified by the
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% magick string, is Farbeld.
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%
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% The format of the IsFarbeld method is:
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%
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% MagickBooleanType IsFARBFELD(const unsigned char *magick,
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% const size_t extent)
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%
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% A description of each parameter follows:
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%
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% o magick: compare image format pattern against these bytes.
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%
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% o extent: Specifies the extent of the magick string.
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%
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*/
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static MagickBooleanType IsFARBFELD(const unsigned char *magick,
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const size_t extent)
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{
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if (extent < 8)
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return(MagickFalse);
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if (LocaleNCompare((char *) magick,"farbfeld",8) == 0)
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return(MagickTrue);
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return(MagickFalse);
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% R e a d F A R B F E L D I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% ReadFARBFELDImage() reads an image of raw bits in LSB order and returns it.
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% It allocates the memory necessary for the new Image structure and returns
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% a pointer to the new image.
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%
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% The format of the ReadFARBFELDImage method is:
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%
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% Image *ReadFARBFELDImage(const ImageInfo *image_info,
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% ExceptionInfo *exception)
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%
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% A description of each parameter follows:
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%
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% o image_info: the image info.
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%
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% o exception: return any errors or warnings in this structure.
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%
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*/
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static Image *ReadFARBFELDImage(const ImageInfo *image_info,
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ExceptionInfo *exception)
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{
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Image
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*image;
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QuantumInfo
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*quantum_info;
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MagickBooleanType
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status;
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MagickSizeType
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magic;
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size_t
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extent;
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ssize_t
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count,
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y;
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unsigned char
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*pixels;
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/*
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Open image file.
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*/
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assert(image_info != (const ImageInfo *) NULL);
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assert(image_info->signature == MagickCoreSignature);
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if (image_info->debug != MagickFalse)
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
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image_info->filename);
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assert(exception != (ExceptionInfo *) NULL);
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assert(exception->signature == MagickCoreSignature);
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image=AcquireImage(image_info,exception);
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status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
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if (status == MagickFalse)
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{
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image=DestroyImageList(image);
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return((Image *) NULL);
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}
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image->depth=16;
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image->endian=MSBEndian;
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magic=ReadBlobLongLong(image);
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if (magic != MagickULLConstant(7377303431559867492))
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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image->columns=(size_t) ReadBlobLong(image);
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image->rows=(size_t) ReadBlobLong(image);
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image->alpha_trait=BlendPixelTrait;
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if (image_info->ping != MagickFalse)
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{
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(void) CloseBlob(image);
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return(GetFirstImageInList(image));
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}
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status=SetImageExtent(image,image->columns,image->rows,exception);
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if (status == MagickFalse)
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return(DestroyImageList(image));
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quantum_info=AcquireQuantumInfo(image_info,image);
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if (quantum_info == (QuantumInfo *) NULL)
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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status=SetQuantumFormat(image,quantum_info,UnsignedQuantumFormat);
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extent=GetQuantumExtent(image,quantum_info,RGBAQuantum);
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pixels=GetQuantumPixels(quantum_info);
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for (y=0; y < (ssize_t) image->rows; y++)
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{
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const void
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*stream;
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Quantum
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*magick_restrict q;
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q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
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if (q == (Quantum *) NULL)
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break;
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stream=ReadBlobStream(image,extent,pixels,&count);
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if (count != (ssize_t) extent)
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break;
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(void) ImportQuantumPixels(image,(CacheView *) NULL,quantum_info,
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RGBAQuantum,(unsigned char *) stream,exception);
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if (SyncAuthenticPixels(image,exception) == MagickFalse)
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break;
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if (SetImageProgress(image,LoadImageTag,y,image->rows) == MagickFalse)
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break;
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}
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SetQuantumImageType(image,RGBAQuantum);
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quantum_info=DestroyQuantumInfo(quantum_info);
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if (y < (ssize_t) image->rows)
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ThrowReaderException(CorruptImageError,"UnableToReadImageData");
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if (EOFBlob(image) != MagickFalse)
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ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
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image->filename);
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(void) CloseBlob(image);
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return(GetFirstImageInList(image));
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% R e g i s t e r F A R B F E L D I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% RegisterFARBFELDImage() adds attributes for the FARBFELD image format to
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% the list of supported formats. The attributes include the image format
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% tag, a method to read and/or write the format, whether the format
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|
% supports the saving of more than one frame to the same file or blob,
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% whether the format supports native in-memory I/O, and a brief
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% description of the format.
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%
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% The format of the RegisterFARBFELDImage method is:
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%
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% size_t RegisterFARBFELDImage(void)
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%
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*/
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ModuleExport size_t RegisterFARBFELDImage(void)
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{
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MagickInfo
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*entry;
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entry=AcquireMagickInfo("FARBFELD","FARBFELD","Farbfeld");
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entry->decoder=(DecodeImageHandler *) ReadFARBFELDImage;
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entry->encoder=(EncodeImageHandler *) WriteFARBFELDImage;
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entry->magick=(IsImageFormatHandler *) IsFARBFELD;
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entry->flags|=CoderRawSupportFlag;
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entry->flags^=CoderAdjoinFlag;
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(void) RegisterMagickInfo(entry);
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entry=AcquireMagickInfo("FARBFELD","FF","Farbfeld");
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entry->decoder=(DecodeImageHandler *) ReadFARBFELDImage;
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entry->encoder=(EncodeImageHandler *) WriteFARBFELDImage;
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entry->magick=(IsImageFormatHandler *) IsFARBFELD;
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entry->flags|=CoderRawSupportFlag;
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entry->flags^=CoderAdjoinFlag;
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(void) RegisterMagickInfo(entry);
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return(MagickImageCoderSignature);
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}
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/*
|
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|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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|
% %
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% %
|
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% %
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% U n r e g i s t e r F A R B F E L D I m a g e %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
|
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% UnregisterFARBFELDImage() removes format registrations made by the
|
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% Farbfeld module from the list of supported formats.
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%
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|
% The format of the UnregisterFARBFELDImage method is:
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%
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% UnregisterFARBFELDImage(void)
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%
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*/
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ModuleExport void UnregisterFARBFELDImage(void)
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{
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(void) UnregisterMagickInfo("FARBFELD");
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}
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/*
|
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
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% %
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% %
|
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% %
|
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% W r i t e F A R B F E L D I m a g e %
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% %
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% %
|
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|
% %
|
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|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
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%
|
|
|
% WriteFARBFELDImage() writes an image of raw bits in MSB order to a file.
|
|
|
%
|
|
|
% The format of the WriteFARBFELDImage method is:
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|
|
%
|
|
|
% MagickBooleanType WriteFARBFELDImage(const ImageInfo *image_info,
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|
% Image *image,ExceptionInfo *exception)
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%
|
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|
% A description of each parameter follows.
|
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%
|
|
|
% o image_info: the image info.
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%
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% o image: The image.
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%
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% o exception: return any errors or warnings in this structure.
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%
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*/
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static MagickBooleanType WriteFARBFELDImage(const ImageInfo *image_info,
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Image *image,ExceptionInfo *exception)
|
|
|
{
|
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MagickBooleanType
|
|
|
status;
|
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|
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|
QuantumInfo
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|
*quantum_info;
|
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const Quantum
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|
*p;
|
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|
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|
size_t
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extent;
|
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|
ssize_t
|
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|
count,
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y;
|
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unsigned char
|
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*pixels;
|
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/*
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|
|
Open output image file.
|
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|
*/
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assert(image_info != (const ImageInfo *) NULL);
|
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|
assert(image_info->signature == MagickCoreSignature);
|
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|
assert(image != (Image *) NULL);
|
|
|
assert(image->signature == MagickCoreSignature);
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|
|
if (image->debug != MagickFalse)
|
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|
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
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|
assert(exception != (ExceptionInfo *) NULL);
|
|
|
assert(exception->signature == MagickCoreSignature);
|
|
|
status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
|
|
|
if (status == MagickFalse)
|
|
|
return(status);
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|
image->endian=MSBEndian;
|
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|
(void) WriteBlobLongLong(image,MagickULLConstant(7377303431559867492));
|
|
|
(void) WriteBlobLong(image,(unsigned int) image->columns);
|
|
|
(void) WriteBlobLong(image,(unsigned int) image->rows);
|
|
|
image->depth=16;
|
|
|
quantum_info=AcquireQuantumInfo(image_info,image);
|
|
|
if (quantum_info == (QuantumInfo *) NULL)
|
|
|
ThrowWriterException(ImageError,"MemoryAllocationFailed");
|
|
|
status=SetQuantumFormat(image,quantum_info,UnsignedQuantumFormat);
|
|
|
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,
|
|
|
RGBAQuantum,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);
|
|
|
}
|
