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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% PPPP GGGG X X %
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% P P G X X %
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% PPPP G GG X %
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% P G G X X %
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% P GGG X X %
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% %
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% %
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% PGX JPEG 2000 Format %
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% %
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% Software Design %
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% Cristy %
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% July 2016 %
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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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WritePGXImage(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 P G X %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% IsPGXreturns True if the image format type, identified by the magick
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% string, is PGX.
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%
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% The format of the IsPGX method is:
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%
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% unsigned int IsPGX(const unsigned char *magick,const size_t length)
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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 length: Specifies the length of the magick string.
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%
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*/
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static unsigned int IsPGX(const unsigned char *magick,const size_t length)
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{
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if (length < 5)
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return(MagickFalse);
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if ((memcmp(magick,"PG ML",5) == 0) || (memcmp(magick,"PG LM",5) == 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 P G X 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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% ReadPGXImage() 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 ReadPGXImage method is:
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%
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% Image *ReadPGXImage(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 *ReadPGXImage(const ImageInfo *image_info,ExceptionInfo *exception)
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{
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char
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buffer[MagickPathExtent],
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endian[MagickPathExtent],
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sans[MagickPathExtent],
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sign[MagickPathExtent];
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Image
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*image;
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int
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height,
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precision,
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width;
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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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size_t
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length;
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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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if (ReadBlobString(image,buffer) == (char *) NULL)
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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count=(ssize_t) sscanf(buffer,"PG%[ \t]%2s%[ \t+-]%d%[ \t]%d%[ \t]%d",sans,
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endian,sign,&precision,sans,&width,sans,&height);
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if (count != 8)
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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image->depth=(size_t) precision;
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if (LocaleCompare(endian,"ML") == 0)
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image->endian=MSBEndian;
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image->columns=(size_t) width;
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image->rows=(size_t) height;
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if ((image->columns == 0) || (image->rows == 0))
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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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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/*
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Convert PGX image.
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*/
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(void) SetImageColorspace(image,GRAYColorspace,exception);
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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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length=GetQuantumExtent(image,quantum_info,GrayQuantum);
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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,length,pixels,&count);
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if (count != (ssize_t) length)
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break;
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(void) ImportQuantumPixels(image,(CacheView *) NULL,quantum_info,
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GrayQuantum,(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,(MagickOffsetType) y,image->rows) == MagickFalse)
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break;
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}
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SetQuantumImageType(image,GrayQuantum);
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quantum_info=DestroyQuantumInfo(quantum_info);
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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 P G X 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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% RegisterPGXImage() adds attributes for the PGX 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 RegisterPGXImage method is:
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%
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% size_t RegisterPGXImage(void)
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%
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*/
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ModuleExport size_t RegisterPGXImage(void)
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{
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MagickInfo
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*entry;
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entry=AcquireMagickInfo("PGX","PGX","JPEG 2000 uncompressed format");
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entry->decoder=(DecodeImageHandler *) ReadPGXImage;
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entry->encoder=(EncodeImageHandler *) WritePGXImage;
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entry->magick=(IsImageFormatHandler *) IsPGX;
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entry->flags^=CoderAdjoinFlag;
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entry->flags^=CoderUseExtensionFlag;
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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 P G X 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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% UnregisterPGXImage() removes format registrations made by the
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% PGX module from the list of supported formats.
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%
|
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% The format of the UnregisterPGXImage method is:
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%
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% UnregisterPGXImage(void)
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%
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*/
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ModuleExport void UnregisterPGXImage(void)
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{
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(void) UnregisterMagickInfo("PGX");
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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 P G X 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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% WritePGXImage() writes an image of raw bits in LSB order to a file.
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%
|
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|
% The format of the WritePGXImage method is:
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|
%
|
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% MagickBooleanType WritePGXImage(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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%
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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 WritePGXImage(const ImageInfo *image_info,Image *image,
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ExceptionInfo *exception)
|
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|
{
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char
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buffer[MagickPathExtent];
|
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MagickBooleanType
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|
status;
|
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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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size_t
|
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length;
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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);
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|
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);
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assert(exception->signature == MagickCoreSignature);
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status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
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|
if (status == MagickFalse)
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|
return(status);
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(void) FormatLocaleString(buffer,MagickPathExtent,"PG ML + %g %g %g\n",
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(double) image->depth,(double) image->columns,(double) image->rows);
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(void) WriteBlob(image,strlen(buffer),(unsigned char *) buffer);
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(void) TransformImageColorspace(image,sRGBColorspace,exception);
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|
quantum_info=AcquireQuantumInfo(image_info,image);
|
|
|
if (quantum_info == (QuantumInfo *) NULL)
|
|
|
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
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|
|
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;
|
|
|
length=ExportQuantumPixels(image,(CacheView *) NULL,quantum_info,
|
|
|
GrayQuantum,pixels,exception);
|
|
|
count=WriteBlob(image,length,pixels);
|
|
|
if (count != (ssize_t) length)
|
|
|
break;
|
|
|
count=WriteBlob(image,(size_t) (-(ssize_t) length) & 0x01,pixels);
|
|
|
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);
|
|
|
}
|
