forked from openkylin/imagemagick
624 lines
21 KiB
C
624 lines
21 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% RRRR AAA W W %
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% R R A A W W %
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% RRRR AAAAA W W W %
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% R R A A WW WW %
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% R R A A W W %
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% %
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% %
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% Read/Write RAW 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/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/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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/*
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Forward declarations.
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*/
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static MagickBooleanType
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WriteRAWImage(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 R A W 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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% ReadRAWImage() reads an image of raw samples and returns it. It allocates
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% the memory necessary for the new Image structure and returns a pointer to
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% the new image.
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%
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% The format of the ReadRAWImage method is:
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%
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% Image *ReadRAWImage(const ImageInfo *image_info,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 *ReadRAWImage(const ImageInfo *image_info,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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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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status=SetImageExtent(image,image->columns,image->rows);
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if (status == MagickFalse)
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{
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InheritException(exception,&image->exception);
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return(DestroyImageList(image));
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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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Create virtual canvas to support cropping (i.e. image.gray[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_type=GrayQuantum;
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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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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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scene=0;
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count=0;
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length=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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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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if (count != (ssize_t) length)
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break;
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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,"UnexpectedEndOfFile",
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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,exception);
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if (q == (PixelPacket *) NULL)
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break;
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length=ImportQuantumPixels(canvas_image,(CacheView *) NULL,quantum_info,
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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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image->columns,1,exception);
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q=QueueAuthenticPixels(image,0,y-image->extract_info.y,image->columns,
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1,exception);
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if ((p == (const PixelPacket *) NULL) || (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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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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if (count != (ssize_t) length)
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break;
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}
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SetQuantumImageType(image,quantum_type);
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/*
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Proceed to next image.
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*/
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if (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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if (count == (ssize_t) length)
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{
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/*
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Allocate next image structure.
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*/
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AcquireNextImage(image_info,image);
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if (GetNextImageInList(image) == (Image *) NULL)
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{
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status=MagickFalse;
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break;
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}
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image=SyncNextImageInList(image);
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status=SetImageProgress(image,LoadImagesTag,TellBlob(image),
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GetBlobSize(image));
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if (status == MagickFalse)
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break;
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}
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scene++;
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} while (count == (ssize_t) length);
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quantum_info=DestroyQuantumInfo(quantum_info);
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InheritException(exception,&canvas_image->exception);
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InheritException(exception,&image->exception);
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canvas_image=DestroyImage(canvas_image);
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(void) CloseBlob(image);
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if (status == MagickFalse)
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return(DestroyImageList(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 R A W 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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% RegisterRAWImage() adds attributes for the RAW image format to the list of
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% supported formats. The attributes include the image format tag, a method to
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% read and/or write the format, whether the format supports the saving of
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% more than one frame to the same file or blob, whether the format supports
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% native in-memory I/O, and a brief description of the format.
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%
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% The format of the RegisterRAWImage method is:
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%
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% size_t RegisterRAWImage(void)
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%
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*/
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ModuleExport size_t RegisterRAWImage(void)
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{
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MagickInfo
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*entry;
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entry=SetMagickInfo("R");
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entry->decoder=(DecodeImageHandler *) ReadRAWImage;
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entry->encoder=(EncodeImageHandler *) WriteRAWImage;
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entry->raw=MagickTrue;
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entry->endian_support=MagickTrue;
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entry->format_type=ImplicitFormatType;
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entry->description=ConstantString("Raw red samples");
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entry->magick_module=ConstantString("RAW");
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(void) RegisterMagickInfo(entry);
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entry=SetMagickInfo("C");
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entry->decoder=(DecodeImageHandler *) ReadRAWImage;
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entry->encoder=(EncodeImageHandler *) WriteRAWImage;
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entry->raw=MagickTrue;
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entry->endian_support=MagickTrue;
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entry->format_type=ImplicitFormatType;
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entry->description=ConstantString("Raw cyan samples");
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entry->magick_module=ConstantString("RAW");
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(void) RegisterMagickInfo(entry);
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entry=SetMagickInfo("G");
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entry->decoder=(DecodeImageHandler *) ReadRAWImage;
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entry->encoder=(EncodeImageHandler *) WriteRAWImage;
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entry->raw=MagickTrue;
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entry->endian_support=MagickTrue;
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entry->format_type=ImplicitFormatType;
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entry->description=ConstantString("Raw green samples");
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entry->magick_module=ConstantString("RAW");
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(void) RegisterMagickInfo(entry);
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entry=SetMagickInfo("M");
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entry->decoder=(DecodeImageHandler *) ReadRAWImage;
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entry->encoder=(EncodeImageHandler *) WriteRAWImage;
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entry->raw=MagickTrue;
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entry->endian_support=MagickTrue;
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entry->format_type=ImplicitFormatType;
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entry->description=ConstantString("Raw magenta samples");
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entry->magick_module=ConstantString("RAW");
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(void) RegisterMagickInfo(entry);
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entry=SetMagickInfo("B");
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entry->decoder=(DecodeImageHandler *) ReadRAWImage;
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entry->encoder=(EncodeImageHandler *) WriteRAWImage;
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entry->raw=MagickTrue;
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entry->endian_support=MagickTrue;
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entry->format_type=ImplicitFormatType;
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entry->description=ConstantString("Raw blue samples");
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entry->magick_module=ConstantString("RAW");
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(void) RegisterMagickInfo(entry);
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entry=SetMagickInfo("Y");
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entry->decoder=(DecodeImageHandler *) ReadRAWImage;
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entry->encoder=(EncodeImageHandler *) WriteRAWImage;
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entry->raw=MagickTrue;
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entry->endian_support=MagickTrue;
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entry->format_type=ImplicitFormatType;
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entry->description=ConstantString("Raw yellow samples");
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entry->magick_module=ConstantString("RAW");
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(void) RegisterMagickInfo(entry);
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entry=SetMagickInfo("A");
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entry->decoder=(DecodeImageHandler *) ReadRAWImage;
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entry->encoder=(EncodeImageHandler *) WriteRAWImage;
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entry->raw=MagickTrue;
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entry->endian_support=MagickTrue;
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entry->format_type=ImplicitFormatType;
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entry->description=ConstantString("Raw alpha samples");
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entry->magick_module=ConstantString("RAW");
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(void) RegisterMagickInfo(entry);
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entry=SetMagickInfo("O");
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entry->decoder=(DecodeImageHandler *) ReadRAWImage;
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entry->encoder=(EncodeImageHandler *) WriteRAWImage;
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entry->raw=MagickTrue;
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entry->endian_support=MagickTrue;
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entry->format_type=ImplicitFormatType;
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entry->description=ConstantString("Raw opacity samples");
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entry->magick_module=ConstantString("RAW");
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(void) RegisterMagickInfo(entry);
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entry=SetMagickInfo("K");
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entry->decoder=(DecodeImageHandler *) ReadRAWImage;
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entry->encoder=(EncodeImageHandler *) WriteRAWImage;
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entry->raw=MagickTrue;
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entry->endian_support=MagickTrue;
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entry->format_type=ImplicitFormatType;
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entry->description=ConstantString("Raw black samples");
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entry->magick_module=ConstantString("RAW");
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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 R A W 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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% UnregisterRAWImage() removes format registrations made by the RAW module
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% from the list of supported formats.
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%
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% The format of the UnregisterRAWImage method is:
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%
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% UnregisterRAWImage(void)
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%
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*/
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ModuleExport void UnregisterRAWImage(void)
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{
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(void) UnregisterMagickInfo("R");
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(void) UnregisterMagickInfo("C");
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(void) UnregisterMagickInfo("G");
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(void) UnregisterMagickInfo("M");
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(void) UnregisterMagickInfo("B");
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(void) UnregisterMagickInfo("Y");
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(void) UnregisterMagickInfo("A");
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(void) UnregisterMagickInfo("O");
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(void) UnregisterMagickInfo("K");
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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 R A W 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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% WriteRAWImage() writes an image to a file as raw intensity values.
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%
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% The format of the WriteRAWImage method is:
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%
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% MagickBooleanType WriteRAWImage(const ImageInfo *image_info,Image *image)
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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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*/
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static MagickBooleanType WriteRAWImage(const ImageInfo *image_info,Image *image)
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{
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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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MagickBooleanType
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status;
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const PixelPacket
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*p;
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size_t
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imageListLength,
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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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status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
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if (status == MagickFalse)
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return(status);
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switch (*image->magick)
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{
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case 'A':
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case 'a':
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{
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quantum_type=AlphaQuantum;
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break;
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}
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case 'B':
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case 'b':
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{
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quantum_type=BlueQuantum;
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break;
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}
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case 'C':
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case 'c':
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{
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quantum_type=CyanQuantum;
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if (image->colorspace == CMYKColorspace)
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break;
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ThrowWriterException(ImageError,"ColorSeparatedImageRequired");
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}
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case 'g':
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case 'G':
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{
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quantum_type=GreenQuantum;
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break;
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}
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case 'I':
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case 'i':
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{
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quantum_type=IndexQuantum;
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break;
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}
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case 'K':
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||
case 'k':
|
||
{
|
||
quantum_type=BlackQuantum;
|
||
if (image->colorspace == CMYKColorspace)
|
||
break;
|
||
ThrowWriterException(ImageError,"ColorSeparatedImageRequired");
|
||
}
|
||
case 'M':
|
||
case 'm':
|
||
{
|
||
quantum_type=MagentaQuantum;
|
||
if (image->colorspace == CMYKColorspace)
|
||
break;
|
||
ThrowWriterException(ImageError,"ColorSeparatedImageRequired");
|
||
}
|
||
case 'o':
|
||
case 'O':
|
||
{
|
||
quantum_type=OpacityQuantum;
|
||
break;
|
||
}
|
||
case 'R':
|
||
case 'r':
|
||
{
|
||
quantum_type=RedQuantum;
|
||
break;
|
||
}
|
||
case 'Y':
|
||
case 'y':
|
||
{
|
||
quantum_type=YellowQuantum;
|
||
if (image->colorspace == CMYKColorspace)
|
||
break;
|
||
ThrowWriterException(ImageError,"ColorSeparatedImageRequired");
|
||
}
|
||
default:
|
||
{
|
||
quantum_type=GrayQuantum;
|
||
break;
|
||
}
|
||
}
|
||
scene=0;
|
||
imageListLength=GetImageListLength(image);
|
||
do
|
||
{
|
||
/*
|
||
Convert image to RAW raster pixels.
|
||
*/
|
||
quantum_info=AcquireQuantumInfo(image_info,image);
|
||
if (quantum_info == (QuantumInfo *) NULL)
|
||
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
|
||
pixels=GetQuantumPixels(quantum_info);
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
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;
|
||
}
|
||
}
|
||
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);
|
||
}
|