forked from openkylin/imagemagick
1039 lines
36 KiB
C
1039 lines
36 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% SSSSS U U N N %
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% SS U U NN N %
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% SSS U U N N N %
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% SS U U N NN %
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% SSSSS UUU N N %
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% %
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% %
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% Read/Write Sun Rasterfile 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/attribute.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/color.h"
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#include "magick/color-private.h"
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#include "magick/colormap.h"
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#include "magick/colormap-private.h"
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#include "magick/colorspace.h"
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#include "magick/colorspace-private.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/memory-private.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/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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WriteSUNImage(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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% I s S U N %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% IsSUN() returns MagickTrue if the image format type, identified by the
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% magick string, is SUN.
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%
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% The format of the IsSUN method is:
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%
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% MagickBooleanType IsSUN(const unsigned char *magick,const size_t length)
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%
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% A description of each parameter follows:
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%
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% o magick: compare image format pattern against these bytes.
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%
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% o length: Specifies the length of the magick string.
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%
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*/
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static MagickBooleanType IsSUN(const unsigned char *magick,const size_t length)
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{
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if (length < 4)
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return(MagickFalse);
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if (memcmp(magick,"\131\246\152\225",4) == 0)
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return(MagickTrue);
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return(MagickFalse);
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% D e c o d e 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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% DecodeImage unpacks the packed image pixels into runlength-encoded pixel
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% packets.
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%
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% The format of the DecodeImage method is:
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%
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% MagickBooleanType DecodeImage(const unsigned char *compressed_pixels,
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% const size_t length,unsigned char *pixels)
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%
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% A description of each parameter follows:
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%
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% o compressed_pixels: The address of a byte (8 bits) array of compressed
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% pixel data.
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%
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% o length: An integer value that is the total number of bytes of the
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% source image (as just read by ReadBlob)
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%
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% o pixels: The address of a byte (8 bits) array of pixel data created by
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% the uncompression process. The number of bytes in this array
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% must be at least equal to the number columns times the number of rows
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% of the source pixels.
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%
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*/
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static MagickBooleanType DecodeImage(const unsigned char *compressed_pixels,
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const size_t length,unsigned char *pixels,size_t extent)
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{
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const unsigned char
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*p;
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unsigned char
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*q;
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ssize_t
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count;
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unsigned char
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byte;
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(void) LogMagickEvent(TraceEvent,GetMagickModule(),"...");
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assert(compressed_pixels != (unsigned char *) NULL);
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assert(pixels != (unsigned char *) NULL);
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p=compressed_pixels;
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q=pixels;
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while (((size_t) (p-compressed_pixels) < length) &&
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((size_t) (q-pixels) < extent))
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{
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byte=(*p++);
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if (byte != 128U)
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*q++=byte;
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else
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{
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/*
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Runlength-encoded packet: <count><byte>.
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*/
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if (((size_t) (p-compressed_pixels) >= length))
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break;
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count=(*p++);
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if (count > 0)
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{
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if (((size_t) (p-compressed_pixels) >= length))
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break;
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byte=(*p++);
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}
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while ((count >= 0) && ((size_t) (q-pixels) < extent))
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{
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*q++=byte;
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count--;
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}
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}
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}
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return(((size_t) (q-pixels) == extent) ? MagickTrue : MagickFalse);
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% R e a d S U N 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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% ReadSUNImage() reads a SUN image file 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 ReadSUNImage method is:
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%
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% Image *ReadSUNImage(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 *ReadSUNImage(const ImageInfo *image_info,ExceptionInfo *exception)
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{
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#define RMT_EQUAL_RGB 1
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#define RMT_NONE 0
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#define RMT_RAW 2
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#define RT_STANDARD 1
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#define RT_ENCODED 2
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#define RT_FORMAT_RGB 3
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typedef struct _SUNInfo
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{
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unsigned int
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magic,
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width,
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height,
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depth,
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length,
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type,
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maptype,
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maplength;
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} SUNInfo;
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Image
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*image;
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int
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bit;
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MagickBooleanType
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status;
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MagickSizeType
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number_pixels;
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IndexPacket
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*indexes;
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PixelPacket
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*q;
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ssize_t
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i,
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x;
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unsigned char
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*p;
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size_t
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bytes_per_line,
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extent,
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height,
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pixels_length,
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quantum;
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ssize_t
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count,
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y;
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SUNInfo
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sun_info;
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unsigned char
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*sun_data,
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*sun_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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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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/*
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Read SUN raster header.
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*/
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(void) memset(&sun_info,0,sizeof(sun_info));
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sun_info.magic=ReadBlobMSBLong(image);
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do
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{
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/*
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Verify SUN identifier.
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*/
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if (sun_info.magic != 0x59a66a95)
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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sun_info.width=ReadBlobMSBLong(image);
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sun_info.height=ReadBlobMSBLong(image);
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sun_info.depth=ReadBlobMSBLong(image);
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sun_info.length=ReadBlobMSBLong(image);
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sun_info.type=ReadBlobMSBLong(image);
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sun_info.maptype=ReadBlobMSBLong(image);
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sun_info.maplength=ReadBlobMSBLong(image);
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if (sun_info.maplength > GetBlobSize(image))
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ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
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extent=(size_t) (sun_info.height*sun_info.width);
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if ((sun_info.height != 0) && (sun_info.width != (extent/sun_info.height)))
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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if ((sun_info.type != RT_STANDARD) && (sun_info.type != RT_ENCODED) &&
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(sun_info.type != RT_FORMAT_RGB))
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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if ((sun_info.maptype == RMT_NONE) && (sun_info.maplength != 0))
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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if ((sun_info.depth != 1) && (sun_info.depth != 8) &&
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(sun_info.depth != 24) && (sun_info.depth != 32))
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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if ((sun_info.maptype != RMT_NONE) && (sun_info.maptype != RMT_EQUAL_RGB) &&
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(sun_info.maptype != RMT_RAW))
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ThrowReaderException(CoderError,"ColormapTypeNotSupported");
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image->columns=sun_info.width;
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image->rows=sun_info.height;
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image->depth=sun_info.depth <= 8 ? sun_info.depth :
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MAGICKCORE_QUANTUM_DEPTH;
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if (sun_info.depth < 24)
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{
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size_t
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one;
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image->colors=sun_info.maplength;
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one=1;
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if (sun_info.maptype == RMT_NONE)
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image->colors=one << sun_info.depth;
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if (sun_info.maptype == RMT_EQUAL_RGB)
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image->colors=sun_info.maplength/3;
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if (image->colors == 0)
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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if (AcquireImageColormap(image,image->colors) == MagickFalse)
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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}
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switch (sun_info.maptype)
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{
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case RMT_NONE:
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break;
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case RMT_EQUAL_RGB:
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{
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unsigned char
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*sun_colormap;
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/*
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Read SUN raster colormap.
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*/
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sun_colormap=(unsigned char *) AcquireQuantumMemory(image->colors,
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sizeof(*sun_colormap));
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if (sun_colormap == (unsigned char *) NULL)
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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count=ReadBlob(image,image->colors,sun_colormap);
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if (count != (ssize_t) image->colors)
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{
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sun_colormap=(unsigned char *) RelinquishMagickMemory(sun_colormap);
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ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile");
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}
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for (i=0; i < (ssize_t) image->colors; i++)
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image->colormap[i].red=ScaleCharToQuantum(sun_colormap[i]);
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count=ReadBlob(image,image->colors,sun_colormap);
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if (count != (ssize_t) image->colors)
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{
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sun_colormap=(unsigned char *) RelinquishMagickMemory(sun_colormap);
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ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile");
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}
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for (i=0; i < (ssize_t) image->colors; i++)
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image->colormap[i].green=ScaleCharToQuantum(sun_colormap[i]);
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count=ReadBlob(image,image->colors,sun_colormap);
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if (count != (ssize_t) image->colors)
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||
{
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sun_colormap=(unsigned char *) RelinquishMagickMemory(sun_colormap);
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ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile");
|
||
}
|
||
for (i=0; i < (ssize_t) image->colors; i++)
|
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image->colormap[i].blue=ScaleCharToQuantum(sun_colormap[i]);
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sun_colormap=(unsigned char *) RelinquishMagickMemory(sun_colormap);
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break;
|
||
}
|
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case RMT_RAW:
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||
{
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||
unsigned char
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*sun_colormap;
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||
|
||
/*
|
||
Read SUN raster colormap.
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||
*/
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||
sun_colormap=(unsigned char *) AcquireQuantumMemory(sun_info.maplength,
|
||
sizeof(*sun_colormap));
|
||
if (sun_colormap == (unsigned char *) NULL)
|
||
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
||
count=ReadBlob(image,sun_info.maplength,sun_colormap);
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||
sun_colormap=(unsigned char *) RelinquishMagickMemory(sun_colormap);
|
||
if (count != (ssize_t) sun_info.maplength)
|
||
ThrowReaderException(CorruptImageError,"UnexpectedEndOfFile");
|
||
break;
|
||
}
|
||
default:
|
||
break;
|
||
}
|
||
image->matte=sun_info.depth == 32 ? MagickTrue : MagickFalse;
|
||
image->columns=sun_info.width;
|
||
image->rows=sun_info.height;
|
||
if (image_info->ping != MagickFalse)
|
||
{
|
||
(void) CloseBlob(image);
|
||
return(GetFirstImageInList(image));
|
||
}
|
||
status=SetImageExtent(image,image->columns,image->rows);
|
||
if (status == MagickFalse)
|
||
{
|
||
InheritException(exception,&image->exception);
|
||
return(DestroyImageList(image));
|
||
}
|
||
if (sun_info.length == 0)
|
||
ThrowReaderException(ResourceLimitError,"ImproperImageHeader");
|
||
number_pixels=(MagickSizeType) (image->columns*image->rows);
|
||
if ((sun_info.type != RT_ENCODED) &&
|
||
((number_pixels*sun_info.depth) > (8UL*sun_info.length)))
|
||
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
||
if (HeapOverflowSanityCheck(sun_info.width,sun_info.depth) != MagickFalse)
|
||
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
||
if (HeapOverflowSanityCheckGetSize(sun_info.width,sun_info.depth,&bytes_per_line) != MagickFalse)
|
||
ThrowReaderException(CorruptImageError,"ImproperImageHeader");
|
||
if ((sun_info.type != RT_ENCODED) && (sun_info.length > GetBlobSize(image)))
|
||
ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
|
||
sun_data=(unsigned char *) AcquireQuantumMemory(sun_info.length,
|
||
sizeof(*sun_data));
|
||
if (sun_data == (unsigned char *) NULL)
|
||
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
||
(void) memset(sun_data,0,sun_info.length*sizeof(*sun_data));
|
||
count=(ssize_t) ReadBlob(image,sun_info.length,sun_data);
|
||
if ((sun_info.type != RT_ENCODED) && (count != (ssize_t) sun_info.length))
|
||
{
|
||
sun_data=(unsigned char *) RelinquishMagickMemory(sun_data);
|
||
ThrowReaderException(CorruptImageError,"UnableToReadImageData");
|
||
}
|
||
height=sun_info.height;
|
||
if ((height == 0) || (sun_info.width == 0) || (sun_info.depth == 0) ||
|
||
((bytes_per_line/sun_info.depth) != sun_info.width))
|
||
{
|
||
sun_data=(unsigned char *) RelinquishMagickMemory(sun_data);
|
||
ThrowReaderException(ResourceLimitError,"ImproperImageHeader");
|
||
}
|
||
quantum=sun_info.depth == 1 ? 15 : 7;
|
||
bytes_per_line+=quantum;
|
||
bytes_per_line<<=1;
|
||
if ((bytes_per_line >> 1) != ((size_t) sun_info.width*sun_info.depth+quantum))
|
||
{
|
||
sun_data=(unsigned char *) RelinquishMagickMemory(sun_data);
|
||
ThrowReaderException(ResourceLimitError,"ImproperImageHeader");
|
||
}
|
||
bytes_per_line>>=4;
|
||
if (HeapOverflowSanityCheck(height,bytes_per_line) != MagickFalse)
|
||
{
|
||
sun_data=(unsigned char *) RelinquishMagickMemory(sun_data);
|
||
ThrowReaderException(ResourceLimitError,"ImproperImageHeader");
|
||
}
|
||
pixels_length=height*bytes_per_line;
|
||
sun_pixels=(unsigned char *) AcquireQuantumMemory(pixels_length+image->rows,
|
||
sizeof(*sun_pixels));
|
||
if (sun_pixels == (unsigned char *) NULL)
|
||
{
|
||
sun_data=(unsigned char *) RelinquishMagickMemory(sun_data);
|
||
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
|
||
}
|
||
(void) memset(sun_pixels,0,(pixels_length+image->rows)*sizeof(*sun_pixels));
|
||
if (sun_info.type == RT_ENCODED)
|
||
{
|
||
status=DecodeImage(sun_data,sun_info.length,sun_pixels,pixels_length);
|
||
if (status == MagickFalse)
|
||
{
|
||
sun_data=(unsigned char *) RelinquishMagickMemory(sun_data);
|
||
sun_pixels=(unsigned char *) RelinquishMagickMemory(sun_pixels);
|
||
ThrowReaderException(CorruptImageError,"UnableToReadImageData");
|
||
}
|
||
}
|
||
else
|
||
{
|
||
if (EOFBlob(image) != MagickFalse)
|
||
{
|
||
ThrowFileException(exception,CorruptImageError,
|
||
"UnexpectedEndOfFile",image->filename);
|
||
break;
|
||
}
|
||
if (sun_info.length > (pixels_length+image->rows))
|
||
{
|
||
sun_data=(unsigned char *) RelinquishMagickMemory(sun_data);
|
||
sun_pixels=(unsigned char *) RelinquishMagickMemory(sun_pixels);
|
||
ThrowReaderException(ResourceLimitError,"ImproperImageHeader");
|
||
}
|
||
(void) memcpy(sun_pixels,sun_data,sun_info.length);
|
||
}
|
||
sun_data=(unsigned char *) RelinquishMagickMemory(sun_data);
|
||
/*
|
||
Convert SUN raster image to pixel packets.
|
||
*/
|
||
p=sun_pixels;
|
||
if (sun_info.depth == 1)
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
break;
|
||
indexes=GetAuthenticIndexQueue(image);
|
||
for (x=0; x < ((ssize_t) image->columns-7); x+=8)
|
||
{
|
||
for (bit=7; bit >= 0; bit--)
|
||
SetPixelIndex(indexes+x+7-bit,((*p) & (0x01 << bit) ? 0x00 : 0x01));
|
||
p++;
|
||
}
|
||
if ((image->columns % 8) != 0)
|
||
{
|
||
for (bit=7; bit >= (int) (8-(image->columns % 8)); bit--)
|
||
SetPixelIndex(indexes+x+7-bit,(*p) & (0x01 << bit) ? 0x00 : 0x01);
|
||
p++;
|
||
}
|
||
if ((((image->columns/8)+(image->columns % 8 ? 1 : 0)) % 2) != 0)
|
||
p++;
|
||
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
||
break;
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
else
|
||
if (image->storage_class == PseudoClass)
|
||
{
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
break;
|
||
indexes=GetAuthenticIndexQueue(image);
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
SetPixelIndex(indexes+x,ConstrainColormapIndex(image,*p));
|
||
p++;
|
||
}
|
||
if ((image->columns % 2) != 0)
|
||
p++;
|
||
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
||
break;
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
size_t
|
||
bytes_per_pixel;
|
||
|
||
bytes_per_pixel=3;
|
||
if (image->matte != MagickFalse)
|
||
bytes_per_pixel++;
|
||
for (y=0; y < (ssize_t) image->rows; y++)
|
||
{
|
||
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
|
||
if (q == (PixelPacket *) NULL)
|
||
break;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
if (image->matte != MagickFalse)
|
||
SetPixelAlpha(q,ScaleCharToQuantum(*p++));
|
||
if (sun_info.type == RT_STANDARD)
|
||
{
|
||
SetPixelBlue(q,ScaleCharToQuantum(*p++));
|
||
SetPixelGreen(q,ScaleCharToQuantum(*p++));
|
||
SetPixelRed(q,ScaleCharToQuantum(*p++));
|
||
}
|
||
else
|
||
{
|
||
SetPixelRed(q,ScaleCharToQuantum(*p++));
|
||
SetPixelGreen(q,ScaleCharToQuantum(*p++));
|
||
SetPixelBlue(q,ScaleCharToQuantum(*p++));
|
||
}
|
||
if (image->colors != 0)
|
||
{
|
||
SetPixelRed(q,image->colormap[(ssize_t)
|
||
GetPixelRed(q)].red);
|
||
SetPixelGreen(q,image->colormap[(ssize_t)
|
||
GetPixelGreen(q)].green);
|
||
SetPixelBlue(q,image->colormap[(ssize_t)
|
||
GetPixelBlue(q)].blue);
|
||
}
|
||
q++;
|
||
}
|
||
if (((bytes_per_pixel*image->columns) % 2) != 0)
|
||
p++;
|
||
if (SyncAuthenticPixels(image,exception) == MagickFalse)
|
||
break;
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
if (image->storage_class == PseudoClass)
|
||
(void) SyncImage(image);
|
||
sun_pixels=(unsigned char *) RelinquishMagickMemory(sun_pixels);
|
||
/*
|
||
Proceed to next image.
|
||
*/
|
||
if (image_info->number_scenes != 0)
|
||
if (image->scene >= (image_info->scene+image_info->number_scenes-1))
|
||
break;
|
||
sun_info.magic=ReadBlobMSBLong(image);
|
||
if (sun_info.magic == 0x59a66a95)
|
||
{
|
||
/*
|
||
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;
|
||
}
|
||
} while (sun_info.magic == 0x59a66a95);
|
||
(void) CloseBlob(image);
|
||
if (status == MagickFalse)
|
||
return(DestroyImageList(image));
|
||
return(GetFirstImageInList(image));
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% R e g i s t e r S U N I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% RegisterSUNImage() adds attributes for the SUN 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 RegisterSUNImage method is:
|
||
%
|
||
% size_t RegisterSUNImage(void)
|
||
%
|
||
*/
|
||
ModuleExport size_t RegisterSUNImage(void)
|
||
{
|
||
MagickInfo
|
||
*entry;
|
||
|
||
entry=SetMagickInfo("RAS");
|
||
entry->decoder=(DecodeImageHandler *) ReadSUNImage;
|
||
entry->encoder=(EncodeImageHandler *) WriteSUNImage;
|
||
entry->magick=(IsImageFormatHandler *) IsSUN;
|
||
entry->description=ConstantString("SUN Rasterfile");
|
||
entry->seekable_stream=MagickTrue;
|
||
entry->magick_module=ConstantString("SUN");
|
||
(void) RegisterMagickInfo(entry);
|
||
entry=SetMagickInfo("SUN");
|
||
entry->decoder=(DecodeImageHandler *) ReadSUNImage;
|
||
entry->encoder=(EncodeImageHandler *) WriteSUNImage;
|
||
entry->description=ConstantString("SUN Rasterfile");
|
||
entry->seekable_stream=MagickTrue;
|
||
entry->magick_module=ConstantString("SUN");
|
||
(void) RegisterMagickInfo(entry);
|
||
return(MagickImageCoderSignature);
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% U n r e g i s t e r S U N I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% UnregisterSUNImage() removes format registrations made by the
|
||
% SUN module from the list of supported formats.
|
||
%
|
||
% The format of the UnregisterSUNImage method is:
|
||
%
|
||
% UnregisterSUNImage(void)
|
||
%
|
||
*/
|
||
ModuleExport void UnregisterSUNImage(void)
|
||
{
|
||
(void) UnregisterMagickInfo("RAS");
|
||
(void) UnregisterMagickInfo("SUN");
|
||
}
|
||
|
||
/*
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
% %
|
||
% %
|
||
% %
|
||
% W r i t e S U N I m a g e %
|
||
% %
|
||
% %
|
||
% %
|
||
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
||
%
|
||
% WriteSUNImage() writes an image in the SUN rasterfile format.
|
||
%
|
||
% The format of the WriteSUNImage method is:
|
||
%
|
||
% MagickBooleanType WriteSUNImage(const ImageInfo *image_info,Image *image)
|
||
%
|
||
% A description of each parameter follows.
|
||
%
|
||
% o image_info: the image info.
|
||
%
|
||
% o image: The image.
|
||
%
|
||
*/
|
||
static MagickBooleanType WriteSUNImage(const ImageInfo *image_info,Image *image)
|
||
{
|
||
#define RMT_EQUAL_RGB 1
|
||
#define RMT_NONE 0
|
||
#define RMT_RAW 2
|
||
#define RT_STANDARD 1
|
||
#define RT_FORMAT_RGB 3
|
||
|
||
typedef struct _SUNInfo
|
||
{
|
||
unsigned int
|
||
magic,
|
||
width,
|
||
height,
|
||
depth,
|
||
length,
|
||
type,
|
||
maptype,
|
||
maplength;
|
||
} SUNInfo;
|
||
|
||
MagickBooleanType
|
||
status;
|
||
|
||
MagickOffsetType
|
||
scene;
|
||
|
||
MagickSizeType
|
||
number_pixels;
|
||
|
||
const IndexPacket
|
||
*indexes;
|
||
|
||
const PixelPacket
|
||
*p;
|
||
|
||
ssize_t
|
||
i,
|
||
x;
|
||
|
||
size_t
|
||
imageListLength;
|
||
|
||
ssize_t
|
||
y;
|
||
|
||
SUNInfo
|
||
sun_info;
|
||
|
||
/*
|
||
Open output image file.
|
||
*/
|
||
assert(image_info != (const ImageInfo *) NULL);
|
||
assert(image_info->signature == MagickCoreSignature);
|
||
assert(image != (Image *) NULL);
|
||
assert(image->signature == MagickCoreSignature);
|
||
if (image->debug != MagickFalse)
|
||
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
|
||
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
|
||
if (status == MagickFalse)
|
||
return(status);
|
||
scene=0;
|
||
imageListLength=GetImageListLength(image);
|
||
do
|
||
{
|
||
/*
|
||
Initialize SUN raster file header.
|
||
*/
|
||
(void) TransformImageColorspace(image,sRGBColorspace);
|
||
sun_info.magic=0x59a66a95;
|
||
if ((image->columns != (unsigned int) image->columns) ||
|
||
(image->rows != (unsigned int) image->rows))
|
||
ThrowWriterException(ImageError,"WidthOrHeightExceedsLimit");
|
||
sun_info.width=(unsigned int) image->columns;
|
||
sun_info.height=(unsigned int) image->rows;
|
||
sun_info.type=(unsigned int) (image->storage_class == DirectClass ?
|
||
RT_FORMAT_RGB : RT_STANDARD);
|
||
sun_info.maptype=RMT_NONE;
|
||
sun_info.maplength=0;
|
||
number_pixels=(MagickSizeType) image->columns*image->rows;
|
||
if ((4*number_pixels) != (size_t) (4*number_pixels))
|
||
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
|
||
if (image->storage_class == DirectClass)
|
||
{
|
||
/*
|
||
Full color SUN raster.
|
||
*/
|
||
sun_info.depth=(unsigned int) image->matte ? 32U : 24U;
|
||
sun_info.length=(unsigned int) ((image->matte ? 4 : 3)*number_pixels);
|
||
sun_info.length+=sun_info.length & 0x01 ? (unsigned int) image->rows :
|
||
0;
|
||
}
|
||
else
|
||
if (SetImageMonochrome(image,&image->exception))
|
||
{
|
||
/*
|
||
Monochrome SUN raster.
|
||
*/
|
||
sun_info.depth=1;
|
||
sun_info.length=(unsigned int) (((image->columns+7) >> 3)*
|
||
image->rows);
|
||
sun_info.length+=(unsigned int) (((image->columns/8)+(image->columns %
|
||
8 ? 1 : 0)) % 2 ? image->rows : 0);
|
||
}
|
||
else
|
||
{
|
||
/*
|
||
Colormapped SUN raster.
|
||
*/
|
||
sun_info.depth=8;
|
||
sun_info.length=(unsigned int) number_pixels;
|
||
sun_info.length+=(unsigned int) (image->columns & 0x01 ? image->rows :
|
||
0);
|
||
sun_info.maptype=RMT_EQUAL_RGB;
|
||
sun_info.maplength=(unsigned int) (3*image->colors);
|
||
}
|
||
/*
|
||
Write SUN header.
|
||
*/
|
||
(void) WriteBlobMSBLong(image,sun_info.magic);
|
||
(void) WriteBlobMSBLong(image,sun_info.width);
|
||
(void) WriteBlobMSBLong(image,sun_info.height);
|
||
(void) WriteBlobMSBLong(image,sun_info.depth);
|
||
(void) WriteBlobMSBLong(image,sun_info.length);
|
||
(void) WriteBlobMSBLong(image,sun_info.type);
|
||
(void) WriteBlobMSBLong(image,sun_info.maptype);
|
||
(void) WriteBlobMSBLong(image,sun_info.maplength);
|
||
/*
|
||
Convert MIFF to SUN raster pixels.
|
||
*/
|
||
x=0;
|
||
y=0;
|
||
if (image->storage_class == DirectClass)
|
||
{
|
||
unsigned char
|
||
*q;
|
||
|
||
size_t
|
||
bytes_per_pixel,
|
||
length;
|
||
|
||
unsigned char
|
||
*pixels;
|
||
|
||
/*
|
||
Allocate memory for pixels.
|
||
*/
|
||
bytes_per_pixel=3;
|
||
if (image->matte != MagickFalse)
|
||
bytes_per_pixel++;
|
||
length=image->columns;
|
||
pixels=(unsigned char *) AcquireQuantumMemory(length,4*sizeof(*pixels));
|
||
if (pixels == (unsigned char *) NULL)
|
||
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
|
||
/*
|
||
Convert DirectClass packet to SUN RGB pixel.
|
||
*/
|
||
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;
|
||
q=pixels;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
if (image->matte != MagickFalse)
|
||
*q++=ScaleQuantumToChar(GetPixelAlpha(p));
|
||
*q++=ScaleQuantumToChar(GetPixelRed(p));
|
||
*q++=ScaleQuantumToChar(GetPixelGreen(p));
|
||
*q++=ScaleQuantumToChar(GetPixelBlue(p));
|
||
p++;
|
||
}
|
||
if (((bytes_per_pixel*image->columns) & 0x01) != 0)
|
||
*q++='\0'; /* pad scanline */
|
||
(void) WriteBlob(image,(size_t) (q-pixels),pixels);
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
pixels=(unsigned char *) RelinquishMagickMemory(pixels);
|
||
}
|
||
else
|
||
if (SetImageMonochrome(image,&image->exception))
|
||
{
|
||
unsigned char
|
||
bit,
|
||
byte;
|
||
|
||
/*
|
||
Convert PseudoClass image to a SUN monochrome image.
|
||
*/
|
||
(void) SetImageType(image,BilevelType);
|
||
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;
|
||
indexes=GetVirtualIndexQueue(image);
|
||
bit=0;
|
||
byte=0;
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
byte<<=1;
|
||
if (GetPixelLuma(image,p) < (QuantumRange/2.0))
|
||
byte|=0x01;
|
||
bit++;
|
||
if (bit == 8)
|
||
{
|
||
(void) WriteBlobByte(image,byte);
|
||
bit=0;
|
||
byte=0;
|
||
}
|
||
p++;
|
||
}
|
||
if (bit != 0)
|
||
(void) WriteBlobByte(image,(unsigned char) (byte << (8-bit)));
|
||
if ((((image->columns/8)+
|
||
(image->columns % 8 ? 1 : 0)) % 2) != 0)
|
||
(void) WriteBlobByte(image,0); /* pad scanline */
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
{
|
||
/*
|
||
Dump colormap to file.
|
||
*/
|
||
for (i=0; i < (ssize_t) image->colors; i++)
|
||
(void) WriteBlobByte(image,ScaleQuantumToChar(
|
||
image->colormap[i].red));
|
||
for (i=0; i < (ssize_t) image->colors; i++)
|
||
(void) WriteBlobByte(image,ScaleQuantumToChar(
|
||
image->colormap[i].green));
|
||
for (i=0; i < (ssize_t) image->colors; i++)
|
||
(void) WriteBlobByte(image,ScaleQuantumToChar(
|
||
image->colormap[i].blue));
|
||
/*
|
||
Convert PseudoClass packet to SUN colormapped pixel.
|
||
*/
|
||
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;
|
||
indexes=GetVirtualIndexQueue(image);
|
||
for (x=0; x < (ssize_t) image->columns; x++)
|
||
{
|
||
(void) WriteBlobByte(image,(unsigned char)
|
||
GetPixelIndex(indexes+x));
|
||
p++;
|
||
}
|
||
if (image->columns & 0x01)
|
||
(void) WriteBlobByte(image,0); /* pad scanline */
|
||
if (image->previous == (Image *) NULL)
|
||
{
|
||
status=SetImageProgress(image,SaveImageTag,(MagickOffsetType) y,
|
||
image->rows);
|
||
if (status == MagickFalse)
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
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);
|
||
}
|