forked from openkylin/imagemagick
500 lines
17 KiB
C
500 lines
17 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% TTTTT IIIII M M %
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% T I MM MM %
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% T I M M M %
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% T I M M %
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% T IIIII M M %
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% %
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% %
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% Read PSX TIM 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/colormap.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/string_.h"
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#include "magick/module.h"
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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 T I M 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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% ReadTIMImage() reads a PSX TIM image file and returns it. It
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% allocates the memory necessary for the new Image structure and returns a
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% pointer to the new image.
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%
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% Contributed by os@scee.sony.co.uk.
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%
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% The format of the ReadTIMImage method is:
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%
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% Image *ReadTIMImage(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 *ReadTIMImage(const ImageInfo *image_info,ExceptionInfo *exception)
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{
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typedef struct _TIMInfo
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{
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size_t
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id,
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flag;
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} TIMInfo;
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TIMInfo
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tim_info;
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Image
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*image;
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int
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bits_per_pixel,
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has_clut;
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MagickBooleanType
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status;
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IndexPacket
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*indexes;
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ssize_t
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x;
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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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unsigned char
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*p;
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size_t
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bytes_per_line,
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height,
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image_size,
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pixel_mode,
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width;
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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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*tim_pixels;
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unsigned short
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word;
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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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Determine if this a TIM file.
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*/
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tim_info.id=ReadBlobLSBLong(image);
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do
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{
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/*
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Verify TIM identifier.
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*/
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if (tim_info.id != 0x00000010)
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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tim_info.flag=ReadBlobLSBLong(image);
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has_clut=tim_info.flag & (1 << 3) ? 1 : 0;
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pixel_mode=tim_info.flag & 0x07;
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switch ((int) pixel_mode)
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{
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case 0: bits_per_pixel=4; break;
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case 1: bits_per_pixel=8; break;
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case 2: bits_per_pixel=16; break;
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case 3: bits_per_pixel=24; break;
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default: bits_per_pixel=4; break;
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}
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image->depth=8;
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if (has_clut)
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{
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unsigned char
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*tim_colormap;
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/*
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Read TIM raster colormap.
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*/
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(void)ReadBlobLSBLong(image);
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(void)ReadBlobLSBShort(image);
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(void)ReadBlobLSBShort(image);
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width=ReadBlobLSBShort(image);
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height=ReadBlobLSBShort(image);
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image->columns=width;
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image->rows=height;
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if (AcquireImageColormap(image,pixel_mode == 1 ? 256UL : 16UL) == MagickFalse)
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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tim_colormap=(unsigned char *) AcquireQuantumMemory(image->colors,
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2UL*sizeof(*tim_colormap));
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if (tim_colormap == (unsigned char *) NULL)
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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count=ReadBlob(image,2*image->colors,tim_colormap);
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if (count != (ssize_t) (2*image->colors))
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{
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tim_colormap=(unsigned char *) RelinquishMagickMemory(tim_colormap);
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ThrowReaderException(CorruptImageError,
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"InsufficientImageDataInFile");
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}
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p=tim_colormap;
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for (i=0; i < (ssize_t) image->colors; i++)
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{
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word=(*p++);
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word|=(unsigned short) (*p++ << 8);
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image->colormap[i].blue=ScaleCharToQuantum(
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ScaleColor5to8(1UL*(word >> 10) & 0x1f));
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image->colormap[i].green=ScaleCharToQuantum(
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ScaleColor5to8(1UL*(word >> 5) & 0x1f));
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image->colormap[i].red=ScaleCharToQuantum(
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ScaleColor5to8(1UL*word & 0x1f));
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}
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tim_colormap=(unsigned char *) RelinquishMagickMemory(tim_colormap);
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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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/*
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Read image data.
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*/
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(void) ReadBlobLSBLong(image);
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(void) ReadBlobLSBShort(image);
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(void) ReadBlobLSBShort(image);
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width=ReadBlobLSBShort(image);
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height=ReadBlobLSBShort(image);
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image_size=2*width*height;
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bytes_per_line=width*2;
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width=(width*16)/bits_per_pixel;
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image->columns=width;
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image->rows=height;
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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=ResetImagePixels(image,exception);
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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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tim_pixels=(unsigned char *) AcquireQuantumMemory(image_size,
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sizeof(*tim_pixels));
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if (tim_pixels == (unsigned char *) NULL)
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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count=ReadBlob(image,image_size,tim_pixels);
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if (count != (ssize_t) (image_size))
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{
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tim_pixels=(unsigned char *) RelinquishMagickMemory(tim_pixels);
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ThrowReaderException(CorruptImageError,"InsufficientImageDataInFile");
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}
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/*
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Convert TIM raster image to pixel packets.
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*/
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switch (bits_per_pixel)
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{
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case 4:
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{
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/*
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Convert PseudoColor scanline.
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*/
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for (y=(ssize_t) image->rows-1; y >= 0; y--)
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{
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q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
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if (q == (PixelPacket *) NULL)
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break;
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indexes=GetAuthenticIndexQueue(image);
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p=tim_pixels+y*bytes_per_line;
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for (x=0; x < ((ssize_t) image->columns-1); x+=2)
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{
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SetPixelIndex(indexes+x,(*p) & 0x0f);
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SetPixelIndex(indexes+x+1,(*p >> 4) & 0x0f);
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p++;
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}
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if ((image->columns % 2) != 0)
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{
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SetPixelIndex(indexes+x,(*p >> 4) & 0x0f);
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p++;
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}
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if (SyncAuthenticPixels(image,exception) == MagickFalse)
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break;
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if (image->previous == (Image *) NULL)
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{
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status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
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image->rows);
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if (status == MagickFalse)
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break;
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}
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}
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break;
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}
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case 8:
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{
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/*
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Convert PseudoColor scanline.
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*/
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for (y=(ssize_t) image->rows-1; y >= 0; y--)
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{
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q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
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if (q == (PixelPacket *) NULL)
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break;
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indexes=GetAuthenticIndexQueue(image);
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p=tim_pixels+y*bytes_per_line;
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for (x=0; x < (ssize_t) image->columns; x++)
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SetPixelIndex(indexes+x,*p++);
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if (SyncAuthenticPixels(image,exception) == MagickFalse)
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break;
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if (image->previous == (Image *) NULL)
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{
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status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
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image->rows);
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if (status == MagickFalse)
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break;
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}
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}
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break;
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}
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case 16:
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{
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/*
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Convert DirectColor scanline.
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*/
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for (y=(ssize_t) image->rows-1; y >= 0; y--)
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{
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p=tim_pixels+y*bytes_per_line;
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q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
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if (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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word=(*p++);
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word|=(*p++ << 8);
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SetPixelBlue(q,ScaleCharToQuantum(ScaleColor5to8(
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(1UL*word >> 10) & 0x1f)));
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SetPixelGreen(q,ScaleCharToQuantum(ScaleColor5to8(
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(1UL*word >> 5) & 0x1f)));
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SetPixelRed(q,ScaleCharToQuantum(ScaleColor5to8(
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(1UL*word >> 0) & 0x1f)));
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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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if (image->previous == (Image *) NULL)
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{
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status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
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image->rows);
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if (status == MagickFalse)
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break;
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}
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}
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break;
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}
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case 24:
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{
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/*
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Convert DirectColor scanline.
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*/
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for (y=(ssize_t) image->rows-1; y >= 0; y--)
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{
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p=tim_pixels+y*bytes_per_line;
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q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
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if (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,ScaleCharToQuantum(*p++));
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SetPixelGreen(q,ScaleCharToQuantum(*p++));
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SetPixelBlue(q,ScaleCharToQuantum(*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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if (image->previous == (Image *) NULL)
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{
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status=SetImageProgress(image,LoadImageTag,(MagickOffsetType) y,
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image->rows);
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if (status == MagickFalse)
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break;
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}
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}
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break;
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}
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default:
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{
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tim_pixels=(unsigned char *) RelinquishMagickMemory(tim_pixels);
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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}
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}
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if (image->storage_class == PseudoClass)
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(void) SyncImage(image);
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tim_pixels=(unsigned char *) RelinquishMagickMemory(tim_pixels);
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if (EOFBlob(image) != MagickFalse)
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{
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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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/*
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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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tim_info.id=ReadBlobLSBLong(image);
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if (tim_info.id == 0x00000010)
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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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} while (tim_info.id == 0x00000010);
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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 T I M 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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% RegisterTIMImage() adds attributes for the TIM image format to
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% the list of supported formats. The attributes include the image format
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% tag, a method to read and/or write the format, whether the format
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% supports the saving of more than one frame to the same file or blob,
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% whether the format supports native in-memory I/O, and a brief
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% description of the format.
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%
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% The format of the RegisterTIMImage method is:
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%
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% size_t RegisterTIMImage(void)
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%
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*/
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ModuleExport size_t RegisterTIMImage(void)
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{
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MagickInfo
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*entry;
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entry=SetMagickInfo("TIM");
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entry->decoder=(DecodeImageHandler *) ReadTIMImage;
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entry->description=ConstantString("PSX TIM");
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entry->magick_module=ConstantString("TIM");
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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 T I M 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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% UnregisterTIMImage() removes format registrations made by the
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% TIM module from the list of supported formats.
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%
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% The format of the UnregisterTIMImage method is:
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%
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% UnregisterTIMImage(void)
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%
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*/
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ModuleExport void UnregisterTIMImage(void)
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{
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(void) UnregisterMagickInfo("TIM");
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}
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