forked from openkylin/imagemagick
1135 lines
39 KiB
C
1135 lines
39 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% GGGG RRRR AAA Y Y %
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% G R R A A Y Y %
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% G GG RRRR AAAAA Y %
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% G G R R A A Y %
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% GGG R R A A Y %
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% %
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% %
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% Read/Write Raw GRAY Image Format %
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% %
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% Software Design %
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% Cristy %
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% July 1992 %
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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 "magick/studio.h"
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#include "magick/blob.h"
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#include "magick/blob-private.h"
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#include "magick/cache.h"
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#include "magick/colorspace.h"
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#include "magick/colorspace-private.h"
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#include "magick/channel.h"
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#include "magick/constitute.h"
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#include "magick/exception.h"
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#include "magick/exception-private.h"
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#include "magick/image.h"
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#include "magick/image-private.h"
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#include "magick/list.h"
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#include "magick/magick.h"
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#include "magick/memory_.h"
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#include "magick/monitor.h"
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#include "magick/monitor-private.h"
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#include "magick/pixel-accessor.h"
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#include "magick/pixel-private.h"
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#include "magick/quantum-private.h"
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#include "magick/static.h"
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#include "magick/statistic.h"
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#include "magick/string_.h"
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#include "magick/module.h"
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#include "magick/utility.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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WriteGRAYImage(const ImageInfo *,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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% R e a d G R A Y 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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% ReadGRAYImage() reads an image of raw GRAY, GRAYA, or GRAYO samples and returns
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% it. It allocates the memory necessary for the new Image structure and
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% returns a pointer to the new image.
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%
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% The format of the ReadGRAYImage method is:
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%
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% Image *ReadGRAYImage(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 *ReadGRAYImage(const ImageInfo *image_info,
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ExceptionInfo *exception)
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{
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const void
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*stream;
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Image
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*canvas_image,
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*image;
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MagickBooleanType
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status;
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MagickOffsetType
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scene;
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QuantumInfo
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*quantum_info;
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QuantumType
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quantum_type;
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ssize_t
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i;
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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);
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if ((image->columns == 0) || (image->rows == 0))
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ThrowReaderException(OptionError,"MustSpecifyImageSize");
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image->colorspace=GRAYColorspace;
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if (image_info->interlace != PartitionInterlace)
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{
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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 (DiscardBlobBytes(image,(MagickSizeType) image->offset) == MagickFalse)
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ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
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image->filename);
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}
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/*
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Create virtual canvas to support cropping (i.e. image.rgb[100x100+10+20]).
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*/
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canvas_image=CloneImage(image,image->extract_info.width,1,MagickFalse,
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exception);
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if (canvas_image == (Image *) NULL)
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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(void) SetImageVirtualPixelMethod(canvas_image,BlackVirtualPixelMethod);
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quantum_info=AcquireQuantumInfo(image_info,canvas_image);
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if (quantum_info == (QuantumInfo *) NULL)
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{
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canvas_image=DestroyImage(canvas_image);
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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}
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quantum_type=GrayQuantum;
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if (LocaleCompare(image_info->magick,"GRAYA") == 0)
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{
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quantum_type=GrayAlphaQuantum;
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image->matte=MagickTrue;
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}
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pixels=GetQuantumPixels(quantum_info);
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if (image_info->number_scenes != 0)
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while (image->scene < image_info->scene)
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{
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/*
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Skip to next image.
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*/
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image->scene++;
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length=GetQuantumExtent(canvas_image,quantum_info,quantum_type);
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for (y=0; y < (ssize_t) image->rows; y++)
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{
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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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}
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}
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count=0;
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length=0;
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scene=0;
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status=MagickTrue;
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stream=NULL;
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do
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{
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/*
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Read pixels to virtual canvas image then push to image.
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*/
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if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0))
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if (image->scene >= (image_info->scene+image_info->number_scenes-1))
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break;
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status=SetImageExtent(image,image->columns,image->rows);
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if (status == MagickFalse)
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break;
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switch (image_info->interlace)
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{
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case NoInterlace:
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default:
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{
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/*
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No interlacing: GGG...
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*/
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if (scene == 0)
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{
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length=GetQuantumExtent(canvas_image,quantum_info,quantum_type);
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stream=ReadBlobStream(image,length,pixels,&count);
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}
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for (y=0; y < (ssize_t) image->extract_info.height; y++)
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{
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const PixelPacket
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*magick_restrict p;
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PixelPacket
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*magick_restrict q;
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ssize_t
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x;
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if (count != (ssize_t) length)
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{
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status=MagickFalse;
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ThrowFileException(exception,CorruptImageError,
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"UnexpectedEndOfFile",image->filename);
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break;
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}
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q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
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exception);
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if (q == (PixelPacket *) NULL)
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break;
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length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
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quantum_info,quantum_type,(unsigned char *) stream,exception);
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if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
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break;
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if (((y-image->extract_info.y) >= 0) &&
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((y-image->extract_info.y) < (ssize_t) image->rows))
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{
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p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0,
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canvas_image->columns,1,exception);
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q=QueueAuthenticPixels(image,0,y-image->extract_info.y,
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image->columns,1,exception);
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if ((p == (const PixelPacket *) NULL) ||
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(q == (PixelPacket *) NULL))
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break;
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for (x=0; x < (ssize_t) image->columns; x++)
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{
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SetPixelRed(q,GetPixelRed(p));
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SetPixelGreen(q,GetPixelGreen(p));
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SetPixelBlue(q,GetPixelBlue(p));
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SetPixelOpacity(q,OpaqueOpacity);
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if (image->matte != MagickFalse)
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SetPixelOpacity(q,GetPixelOpacity(p));
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p++;
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q++;
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}
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if (SyncAuthenticPixels(image,exception) == MagickFalse)
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break;
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}
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if (image->previous == (Image *) NULL)
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{
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status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
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image->rows);
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if (status == MagickFalse)
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break;
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}
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stream=ReadBlobStream(image,length,pixels,&count);
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}
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break;
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}
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case LineInterlace:
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{
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static QuantumType
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quantum_types[4] =
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{
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GrayQuantum,
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AlphaQuantum
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};
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/*
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Line interlacing: G...G...G...
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*/
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if (scene == 0)
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{
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length=GetQuantumExtent(canvas_image,quantum_info,RedQuantum);
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stream=ReadBlobStream(image,length,pixels,&count);
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}
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for (y=0; y < (ssize_t) image->extract_info.height; y++)
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{
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for (i=0; i < (ssize_t) (image->matte != MagickFalse ? 4 : 3); i++)
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{
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const PixelPacket
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*magick_restrict p;
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PixelPacket
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*magick_restrict q;
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ssize_t
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x;
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if (count != (ssize_t) length)
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{
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status=MagickFalse;
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ThrowFileException(exception,CorruptImageError,
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"UnexpectedEndOfFile",image->filename);
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break;
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}
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quantum_type=quantum_types[i];
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q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
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exception);
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if (q == (PixelPacket *) NULL)
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break;
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length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
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quantum_info,quantum_type,(unsigned char *) stream,exception);
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if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
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break;
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if (((y-image->extract_info.y) >= 0) &&
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((y-image->extract_info.y) < (ssize_t) image->rows))
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{
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p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,
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0,canvas_image->columns,1,exception);
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q=GetAuthenticPixels(image,0,y-image->extract_info.y,
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image->columns,1,exception);
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if ((p == (const PixelPacket *) NULL) ||
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(q == (PixelPacket *) NULL))
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break;
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for (x=0; x < (ssize_t) image->columns; x++)
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{
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switch (quantum_type)
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{
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case GrayQuantum:
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{
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SetPixelGray(q,GetPixelGray(p));
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break;
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}
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case AlphaQuantum:
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{
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SetPixelAlpha(q,GetPixelAlpha(p));
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break;
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}
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default:
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break;
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}
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p++;
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q++;
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}
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if (SyncAuthenticPixels(image,exception) == MagickFalse)
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break;
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}
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stream=ReadBlobStream(image,length,pixels,&count);
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}
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if (image->previous == (Image *) NULL)
|
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{
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status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
|
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image->rows);
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if (status == MagickFalse)
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break;
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}
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}
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break;
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}
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case PlaneInterlace:
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{
|
||
/*
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Plane interlacing: GGG...GGG...GGG...
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*/
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if (scene == 0)
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{
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length=GetQuantumExtent(canvas_image,quantum_info,RedQuantum);
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stream=ReadBlobStream(image,length,pixels,&count);
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}
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for (y=0; y < (ssize_t) image->extract_info.height; y++)
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{
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const PixelPacket
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||
*magick_restrict p;
|
||
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||
PixelPacket
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||
*magick_restrict q;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
if (count != (ssize_t) length)
|
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{
|
||
status=MagickFalse;
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ThrowFileException(exception,CorruptImageError,
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"UnexpectedEndOfFile",image->filename);
|
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break;
|
||
}
|
||
q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
|
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exception);
|
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if (q == (PixelPacket *) NULL)
|
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break;
|
||
length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
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quantum_info,RedQuantum,(unsigned char *) stream,exception);
|
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if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
|
||
break;
|
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if (((y-image->extract_info.y) >= 0) &&
|
||
((y-image->extract_info.y) < (ssize_t) image->rows))
|
||
{
|
||
p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0,
|
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canvas_image->columns,1,exception);
|
||
q=GetAuthenticPixels(image,0,y-image->extract_info.y,
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image->columns,1,exception);
|
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if ((p == (const PixelPacket *) NULL) ||
|
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(q == (PixelPacket *) NULL))
|
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break;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
SetPixelGray(q,GetPixelGray(p));
|
||
p++;
|
||
q++;
|
||
}
|
||
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
||
break;
|
||
}
|
||
stream=ReadBlobStream(image,length,pixels,&count);
|
||
}
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,LoadImageTag,1,6);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
for (y=0; y < (ssize_t) image->extract_info.height; y++)
|
||
{
|
||
const PixelPacket
|
||
*magick_restrict p;
|
||
|
||
PixelPacket
|
||
*magick_restrict q;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
if (count != (ssize_t) length)
|
||
{
|
||
status=MagickFalse;
|
||
ThrowFileException(exception,CorruptImageError,
|
||
"UnexpectedEndOfFile",image->filename);
|
||
break;
|
||
}
|
||
q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
|
||
exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
break;
|
||
length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
|
||
quantum_info,GreenQuantum,(unsigned char *) stream,exception);
|
||
if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
|
||
break;
|
||
if (((y-image->extract_info.y) >= 0) &&
|
||
((y-image->extract_info.y) < (ssize_t) image->rows))
|
||
{
|
||
p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0,
|
||
canvas_image->columns,1,exception);
|
||
q=GetAuthenticPixels(image,0,y-image->extract_info.y,
|
||
image->columns,1,exception);
|
||
if ((p == (const PixelPacket *) NULL) ||
|
||
(q == (PixelPacket *) NULL))
|
||
break;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
SetPixelGreen(q,GetPixelGreen(p));
|
||
p++;
|
||
q++;
|
||
}
|
||
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
||
break;
|
||
}
|
||
stream=ReadBlobStream(image,length,pixels,&count);
|
||
}
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,LoadImageTag,2,6);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
if (image->matte != MagickFalse)
|
||
{
|
||
for (y=0; y < (ssize_t) image->extract_info.height; y++)
|
||
{
|
||
const PixelPacket
|
||
*magick_restrict p;
|
||
|
||
PixelPacket
|
||
*magick_restrict q;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
if (count != (ssize_t) length)
|
||
{
|
||
status=MagickFalse;
|
||
ThrowFileException(exception,CorruptImageError,
|
||
"UnexpectedEndOfFile",image->filename);
|
||
break;
|
||
}
|
||
q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
|
||
exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
break;
|
||
length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
|
||
quantum_info,AlphaQuantum,(unsigned char *) stream,exception);
|
||
if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
|
||
break;
|
||
if (((y-image->extract_info.y) >= 0) &&
|
||
((y-image->extract_info.y) < (ssize_t) image->rows))
|
||
{
|
||
p=GetVirtualPixels(canvas_image,
|
||
canvas_image->extract_info.x,0,canvas_image->columns,1,
|
||
exception);
|
||
q=GetAuthenticPixels(image,0,y-image->extract_info.y,
|
||
image->columns,1,exception);
|
||
if ((p == (const PixelPacket *) NULL) ||
|
||
(q == (PixelPacket *) NULL))
|
||
break;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
SetPixelOpacity(q,GetPixelOpacity(p));
|
||
p++;
|
||
q++;
|
||
}
|
||
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
||
break;
|
||
}
|
||
stream=ReadBlobStream(image,length,pixels,&count);
|
||
}
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,LoadImageTag,5,6);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,LoadImageTag,6,6);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
break;
|
||
}
|
||
case PartitionInterlace:
|
||
{
|
||
/*
|
||
Partition interlacing: GGG..., GGG..., GGG...
|
||
*/
|
||
AppendImageFormat("G",image->filename);
|
||
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
|
||
if (status == MagickFalse)
|
||
break;
|
||
if (DiscardBlobBytes(image,(MagickSizeType) image->offset) == MagickFalse)
|
||
{
|
||
status=MagickFalse;
|
||
ThrowFileException(exception,CorruptImageError,"UnexpectedEndOfFile",
|
||
image->filename);
|
||
break;
|
||
}
|
||
length=GetQuantumExtent(canvas_image,quantum_info,RedQuantum);
|
||
for (i=0; i < (ssize_t) scene; i++)
|
||
{
|
||
for (y=0; y < (ssize_t) image->extract_info.height; y++)
|
||
{
|
||
(void) ReadBlobStream(image,length,GetQuantumPixels(quantum_info),
|
||
&count);
|
||
if (count != (ssize_t) length)
|
||
break;
|
||
}
|
||
if (count != (ssize_t) length)
|
||
break;
|
||
}
|
||
stream=ReadBlobStream(image,length,pixels,&count);
|
||
for (y=0; y < (ssize_t) image->extract_info.height; y++)
|
||
{
|
||
const PixelPacket
|
||
*magick_restrict p;
|
||
|
||
PixelPacket
|
||
*magick_restrict q;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
if (count != (ssize_t) length)
|
||
{
|
||
status=MagickFalse;
|
||
ThrowFileException(exception,CorruptImageError,
|
||
"UnexpectedEndOfFile",image->filename);
|
||
break;
|
||
}
|
||
q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
|
||
exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
break;
|
||
length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
|
||
quantum_info,RedQuantum,(unsigned char *) stream,exception);
|
||
if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
|
||
break;
|
||
if (((y-image->extract_info.y) >= 0) &&
|
||
((y-image->extract_info.y) < (ssize_t) image->rows))
|
||
{
|
||
p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,0,
|
||
canvas_image->columns,1,exception);
|
||
q=GetAuthenticPixels(image,0,y-image->extract_info.y,
|
||
image->columns,1,exception);
|
||
if ((p == (const PixelPacket *) NULL) ||
|
||
(q == (PixelPacket *) NULL))
|
||
break;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
SetPixelGray(q,GetPixelGray(p));
|
||
p++;
|
||
q++;
|
||
}
|
||
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
||
break;
|
||
}
|
||
stream=ReadBlobStream(image,length,pixels,&count);
|
||
}
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,LoadImageTag,1,5);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
(void) CloseBlob(image);
|
||
if (image->matte != MagickFalse)
|
||
{
|
||
(void) CloseBlob(image);
|
||
AppendImageFormat("A",image->filename);
|
||
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
|
||
if (status == MagickFalse)
|
||
break;
|
||
length=GetQuantumExtent(canvas_image,quantum_info,AlphaQuantum);
|
||
for (i=0; i < (ssize_t) scene; i++)
|
||
{
|
||
for (y=0; y < (ssize_t) image->extract_info.height; y++)
|
||
{
|
||
(void) ReadBlobStream(image,length,GetQuantumPixels(
|
||
quantum_info),&count);
|
||
if (count != (ssize_t) length)
|
||
break;
|
||
}
|
||
if (count != (ssize_t) length)
|
||
break;
|
||
}
|
||
stream=ReadBlobStream(image,length,pixels,&count);
|
||
for (y=0; y < (ssize_t) image->extract_info.height; y++)
|
||
{
|
||
const PixelPacket
|
||
*magick_restrict p;
|
||
|
||
PixelPacket
|
||
*magick_restrict q;
|
||
|
||
ssize_t
|
||
x;
|
||
|
||
if (count != (ssize_t) length)
|
||
{
|
||
status=MagickFalse;
|
||
ThrowFileException(exception,CorruptImageError,
|
||
"UnexpectedEndOfFile",image->filename);
|
||
break;
|
||
}
|
||
q=GetAuthenticPixels(canvas_image,0,0,canvas_image->columns,1,
|
||
exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
break;
|
||
length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,
|
||
quantum_info,BlueQuantum,(unsigned char *) stream,exception);
|
||
if (SyncAuthenticPixels(canvas_image,exception) == MagickFalse)
|
||
break;
|
||
if (((y-image->extract_info.y) >= 0) &&
|
||
((y-image->extract_info.y) < (ssize_t) image->rows))
|
||
{
|
||
p=GetVirtualPixels(canvas_image,canvas_image->extract_info.x,
|
||
0,canvas_image->columns,1,exception);
|
||
q=GetAuthenticPixels(image,0,y-image->extract_info.y,
|
||
image->columns,1,exception);
|
||
if ((p == (const PixelPacket *) NULL) ||
|
||
(q == (PixelPacket *) NULL))
|
||
break;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
SetPixelAlpha(q,GetPixelAlpha(p));
|
||
p++;
|
||
q++;
|
||
}
|
||
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
||
break;
|
||
}
|
||
stream=ReadBlobStream(image,length,pixels,&count);
|
||
}
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,LoadImageTag,4,5);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
(void) CloseBlob(image);
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,LoadImageTag,5,5);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
if (status == MagickFalse)
|
||
break;
|
||
SetQuantumImageType(image,quantum_type);
|
||
/*
|
||
Proceed to next image.
|
||
*/
|
||
if (image_info->number_scenes != 0)
|
||
if (image->scene >= (image_info->scene+image_info->number_scenes-1))
|
||
break;
|
||
if (count == (ssize_t) length)
|
||
{
|
||
/*
|
||
Allocate next image structure.
|
||
*/
|
||
AcquireNextImage(image_info,image);
|
||
if (GetNextImageInList(image) == (Image *) NULL)
|
||
{
|
||
status=MagickFalse;
|
||
break;
|
||
}
|
||
image=SyncNextImageInList(image);
|
||
status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
|
||
GetBlobSize(image));
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
scene++;
|
||
} while (count == (ssize_t) length);
|
||
quantum_info=DestroyQuantumInfo(quantum_info);
|
||
InheritException(&image->exception,&canvas_image->exception);
|
||
canvas_image=DestroyImage(canvas_image);
|
||
(void) CloseBlob(image);
|
||
if (status == MagickFalse)
|
||
return(DestroyImageList(image));
|
||
return(GetFirstImageInList(image));
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% R e g i s t e r G R A Y I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% RegisterGRAYImage() adds attributes for the GRAY 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 RegisterGRAYImage method is:
|
||
%
|
||
% size_t RegisterGRAYImage(void)
|
||
%
|
||
*/
|
||
ModuleExport size_t RegisterGRAYImage(void)
|
||
{
|
||
MagickInfo
|
||
*entry;
|
||
|
||
entry=SetMagickInfo("GRAY");
|
||
entry->decoder=(DecodeImageHandler *) ReadGRAYImage;
|
||
entry->encoder=(EncodeImageHandler *) WriteGRAYImage;
|
||
entry->raw=MagickTrue;
|
||
entry->endian_support=MagickTrue;
|
||
entry->description=ConstantString("Raw gray samples");
|
||
entry->magick_module=ConstantString("GRAY");
|
||
(void) RegisterMagickInfo(entry);
|
||
entry=SetMagickInfo("GRAYA");
|
||
entry->decoder=(DecodeImageHandler *) ReadGRAYImage;
|
||
entry->encoder=(EncodeImageHandler *) WriteGRAYImage;
|
||
entry->raw=MagickTrue;
|
||
entry->endian_support=MagickTrue;
|
||
entry->description=ConstantString("Raw gray and alpha samples");
|
||
entry->magick_module=ConstantString("GRAY");
|
||
(void) RegisterMagickInfo(entry);
|
||
return(MagickImageCoderSignature);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% U n r e g i s t e r G R A Y I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% UnregisterGRAYImage() removes format registrations made by the GRAY module
|
||
% from the list of supported formats.
|
||
%
|
||
% The format of the UnregisterGRAYImage method is:
|
||
%
|
||
% UnregisterGRAYImage(void)
|
||
%
|
||
*/
|
||
ModuleExport void UnregisterGRAYImage(void)
|
||
{
|
||
(void) UnregisterMagickInfo("GRAYA");
|
||
(void) UnregisterMagickInfo("GRAY");
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% W r i t e G R A Y I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% WriteGRAYImage() writes an image to a file in the GRAY, GRAYA, or GRAYO
|
||
% rasterfile format.
|
||
%
|
||
% The format of the WriteGRAYImage method is:
|
||
%
|
||
% MagickBooleanType WriteGRAYImage(const ImageInfo *image_info,
|
||
% Image *image)
|
||
%
|
||
% A description of each parameter follows.
|
||
%
|
||
% o image_info: the image info.
|
||
%
|
||
% o image: The image.
|
||
%
|
||
*/
|
||
static MagickBooleanType WriteGRAYImage(const ImageInfo *image_info,
|
||
Image *image)
|
||
{
|
||
MagickBooleanType
|
||
status;
|
||
|
||
MagickOffsetType
|
||
scene;
|
||
|
||
QuantumInfo
|
||
*quantum_info;
|
||
|
||
QuantumType
|
||
quantum_type;
|
||
|
||
size_t
|
||
imageListLength,
|
||
length;
|
||
|
||
ssize_t
|
||
count,
|
||
y;
|
||
|
||
unsigned char
|
||
*pixels;
|
||
|
||
/*
|
||
Allocate memory for pixels.
|
||
*/
|
||
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);
|
||
if (image_info->interlace != PartitionInterlace)
|
||
{
|
||
/*
|
||
Open output image file.
|
||
*/
|
||
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
|
||
if (status == MagickFalse)
|
||
return(status);
|
||
}
|
||
quantum_type=GrayQuantum;
|
||
if (LocaleCompare(image_info->magick,"GRAYA") == 0)
|
||
quantum_type=GrayAlphaQuantum;
|
||
scene=0;
|
||
imageListLength=GetImageListLength(image);
|
||
do
|
||
{
|
||
/*
|
||
Convert MIFF to GRAY raster pixels.
|
||
*/
|
||
(void) TransformImageColorspace(image,GRAYColorspace);
|
||
if ((LocaleCompare(image_info->magick,"GRAYA") == 0) &&
|
||
(image->matte == MagickFalse))
|
||
(void) SetImageAlphaChannel(image,ResetAlphaChannel);
|
||
quantum_info=AcquireQuantumInfo(image_info,image);
|
||
if (quantum_info == (QuantumInfo *) NULL)
|
||
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
|
||
pixels=GetQuantumPixels(quantum_info);
|
||
switch (image_info->interlace)
|
||
{
|
||
case NoInterlace:
|
||
default:
|
||
{
|
||
/*
|
||
No interlacing: GGG...
|
||
*/
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
const PixelPacket
|
||
*magick_restrict p;
|
||
|
||
p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
break;
|
||
length=ExportQuantumPixels(image,(const CacheView *) NULL,
|
||
quantum_info,quantum_type,pixels,&image->exception);
|
||
count=WriteBlob(image,length,pixels);
|
||
if (count != (ssize_t) length)
|
||
break;
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
case LineInterlace:
|
||
{
|
||
/*
|
||
Line interlacing: GGG...GGG...GGG...
|
||
*/
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
const PixelPacket
|
||
*magick_restrict p;
|
||
|
||
p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
break;
|
||
length=ExportQuantumPixels(image,(const CacheView *) NULL,
|
||
quantum_info,GrayQuantum,pixels,&image->exception);
|
||
count=WriteBlob(image,length,pixels);
|
||
if (count != (ssize_t) length)
|
||
break;
|
||
if (quantum_type == GrayAlphaQuantum)
|
||
{
|
||
length=ExportQuantumPixels(image,(const CacheView *) NULL,
|
||
quantum_info,AlphaQuantum,pixels,&image->exception);
|
||
count=WriteBlob(image,length,pixels);
|
||
if (count != (ssize_t) length)
|
||
break;
|
||
}
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
break;
|
||
}
|
||
case PlaneInterlace:
|
||
{
|
||
/*
|
||
Plane interlacing: GGGGG..., GGGGG..., GGGGG...
|
||
*/
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
const PixelPacket
|
||
*magick_restrict p;
|
||
|
||
p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
break;
|
||
length=ExportQuantumPixels(image,(const CacheView *) NULL,
|
||
quantum_info,GrayQuantum,pixels,&image->exception);
|
||
count=WriteBlob(image,length,pixels);
|
||
if (count != (ssize_t) length)
|
||
break;
|
||
}
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,SaveImageTag,1,6);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
if (quantum_type == GrayAlphaQuantum)
|
||
{
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
const PixelPacket
|
||
*magick_restrict p;
|
||
|
||
p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
break;
|
||
length=ExportQuantumPixels(image,(const CacheView *) NULL,
|
||
quantum_info,AlphaQuantum,pixels,&image->exception);
|
||
count=WriteBlob(image,length,pixels);
|
||
if (count != (ssize_t) length)
|
||
break;
|
||
}
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,SaveImageTag,5,6);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
if (image_info->interlace == PartitionInterlace)
|
||
(void) CopyMagickString(image->filename,image_info->filename,
|
||
MaxTextExtent);
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,SaveImageTag,6,6);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
break;
|
||
}
|
||
case PartitionInterlace:
|
||
{
|
||
/*
|
||
Partition interlacing: GGG...
|
||
*/
|
||
AppendImageFormat("G",image->filename);
|
||
status=OpenBlob(image_info,image,scene == 0 ? WriteBinaryBlobMode :
|
||
AppendBinaryBlobMode,&image->exception);
|
||
if (status == MagickFalse)
|
||
return(status);
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
const PixelPacket
|
||
*magick_restrict p;
|
||
|
||
p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
break;
|
||
length=ExportQuantumPixels(image,(const CacheView *) NULL,
|
||
quantum_info,GrayQuantum,pixels,&image->exception);
|
||
count=WriteBlob(image,length,pixels);
|
||
if (count != (ssize_t) length)
|
||
break;
|
||
}
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,SaveImageTag,1,6);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
(void) CloseBlob(image);
|
||
if (quantum_type == GrayAlphaQuantum)
|
||
{
|
||
(void) CloseBlob(image);
|
||
AppendImageFormat("A",image->filename);
|
||
status=OpenBlob(image_info,image,scene == 0 ? WriteBinaryBlobMode :
|
||
AppendBinaryBlobMode,&image->exception);
|
||
if (status == MagickFalse)
|
||
return(status);
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
const PixelPacket
|
||
*magick_restrict p;
|
||
|
||
p=GetVirtualPixels(image,0,y,image->columns,1,
|
||
&image->exception);
|
||
if (p == (const PixelPacket *) NULL)
|
||
break;
|
||
length=ExportQuantumPixels(image,(const CacheView *) NULL,
|
||
quantum_info,AlphaQuantum,pixels,&image->exception);
|
||
count=WriteBlob(image,length,pixels);
|
||
if (count != (ssize_t) length)
|
||
break;
|
||
}
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,SaveImageTag,5,6);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
(void) CloseBlob(image);
|
||
(void) CopyMagickString(image->filename,image_info->filename,
|
||
MaxTextExtent);
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,SaveImageTag,6,6);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
quantum_info=DestroyQuantumInfo(quantum_info);
|
||
if (GetNextImageInList(image) == (Image *) NULL)
|
||
break;
|
||
image=SyncNextImageInList(image);
|
||
status=SetImageProgress(image,SaveImagesTag,scene++,imageListLength);
|
||
if (status == MagickFalse)
|
||
break;
|
||
} while (image_info->adjoin != MagickFalse);
|
||
(void) CloseBlob(image);
|
||
return(MagickTrue);
|
||
}
|