forked from openkylin/imagemagick
426 lines
15 KiB
C
426 lines
15 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% AAA AAA IIIII %
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% A A A A I %
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% AAAAA AAAAA I %
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% A A A A I %
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% A A A A IIIII %
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% %
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% %
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% Read/Write AAI X Image Format %
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% %
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% Software Design %
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% Cristy %
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% July 1992 %
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% %
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% %
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% Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
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% dedicated to making software imaging solutions freely available. %
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% %
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% You may not use this file except in compliance with the License. You may %
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% obtain a copy of the License at %
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% %
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% https://imagemagick.org/script/license.php %
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% %
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% Unless required by applicable law or agreed to in writing, software %
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% distributed under the License is distributed on an "AS IS" BASIS, %
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% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
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% See the License for the specific language governing permissions and %
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% limitations under the License. %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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%
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*/
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/*
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Include declarations.
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*/
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#include "magick/studio.h"
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#include "magick/blob.h"
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#include "magick/blob-private.h"
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#include "magick/cache.h"
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#include "magick/colorspace.h"
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#include "magick/colorspace-private.h"
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#include "magick/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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Forward declarations.
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*/
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static MagickBooleanType
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WriteAAIImage(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 A A I 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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% ReadAAIImage() reads an AAI Dune 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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% The format of the ReadAAIImage method is:
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%
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% Image *ReadAAIImage(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 *ReadAAIImage(const ImageInfo *image_info,ExceptionInfo *exception)
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{
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Image
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*image;
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MagickBooleanType
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status;
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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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unsigned char
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*p;
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size_t
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height,
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length,
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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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*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 AAI Dune image.
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*/
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width=ReadBlobLSBLong(image);
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height=ReadBlobLSBLong(image);
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if (EOFBlob(image) != MagickFalse)
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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if ((width == 0UL) || (height == 0UL))
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ThrowReaderException(CorruptImageError,"ImproperImageHeader");
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do
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{
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/*
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Convert AAI raster image to pixel packets.
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*/
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image->columns=width;
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image->rows=height;
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image->depth=8;
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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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{
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InheritException(exception,&image->exception);
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return(DestroyImageList(image));
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}
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pixels=(unsigned char *) AcquireQuantumMemory(image->columns,
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4*sizeof(*pixels));
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if (pixels == (unsigned char *) NULL)
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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length=(size_t) 4*image->columns;
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for (y=0; y < (ssize_t) image->rows; y++)
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{
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count=ReadBlob(image,length,pixels);
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if ((size_t) count != length)
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{
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pixels=(unsigned char *) RelinquishMagickMemory(pixels);
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ThrowReaderException(CorruptImageError,"UnableToReadImageData");
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}
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p=pixels;
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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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SetPixelBlue(q,ScaleCharToQuantum(*p++));
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SetPixelGreen(q,ScaleCharToQuantum(*p++));
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SetPixelRed(q,ScaleCharToQuantum(*p++));
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if (*p == 254)
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*p=255;
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SetPixelAlpha(q,ScaleCharToQuantum(*p++));
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if (q->opacity != OpaqueOpacity)
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image->matte=MagickTrue;
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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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pixels=(unsigned char *) RelinquishMagickMemory(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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width=ReadBlobLSBLong(image);
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height=ReadBlobLSBLong(image);
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if ((width != 0UL) && (height != 0UL))
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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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return((Image *) NULL);
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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 ((width != 0UL) && (height != 0UL));
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(void) CloseBlob(image);
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return(GetFirstImageInList(image));
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}
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/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% R e g i s t e r A A I 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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% RegisterAAIImage() adds attributes for the AAI Dune image format to the list
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% of supported formats. The attributes include the image format tag, a
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% method to read and/or write the format, whether the format supports the
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% saving of more than one frame to the same file or blob, whether the format
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% supports native in-memory I/O, and a brief description of the format.
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%
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% The format of the RegisterAAIImage method is:
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%
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% size_t RegisterAAIImage(void)
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%
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*/
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ModuleExport size_t RegisterAAIImage(void)
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{
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MagickInfo
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*entry;
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entry=SetMagickInfo("AAI");
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entry->decoder=(DecodeImageHandler *) ReadAAIImage;
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entry->encoder=(EncodeImageHandler *) WriteAAIImage;
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entry->description=ConstantString("AAI Dune image");
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entry->magick_module=ConstantString("AAI");
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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 A A I 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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% UnregisterAAIImage() removes format registrations made by the
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% AAI module from the list of supported formats.
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%
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% The format of the UnregisterAAIImage method is:
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%
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% UnregisterAAIImage(void)
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%
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*/
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ModuleExport void UnregisterAAIImage(void)
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{
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(void) UnregisterMagickInfo("AAI");
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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 A A I 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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% WriteAAIImage() writes an image to a file in AAI Dune image format.
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%
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% The format of the WriteAAIImage method is:
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%
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% MagickBooleanType WriteAAIImage(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 WriteAAIImage(const ImageInfo *image_info,Image *image)
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{
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MagickBooleanType
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status;
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MagickOffsetType
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scene;
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const PixelPacket
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*magick_restrict p;
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ssize_t
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x;
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unsigned char
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*magick_restrict q;
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size_t
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imageListLength;
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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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scene=0;
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imageListLength=GetImageListLength(image);
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do
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{
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/*
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Write AAI header.
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*/
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(void) TransformImageColorspace(image,sRGBColorspace);
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(void) WriteBlobLSBLong(image,(unsigned int) image->columns);
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(void) WriteBlobLSBLong(image,(unsigned int) image->rows);
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/*
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Allocate memory for pixels.
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*/
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pixels=(unsigned char *) AcquireQuantumMemory(image->columns,
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4*sizeof(*pixels));
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if (pixels == (unsigned char *) NULL)
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ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
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/*
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Convert MIFF to AAI raster pixels.
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*/
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for (y=0; y < (ssize_t) image->rows; y++)
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{
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p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
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if (p == (PixelPacket *) NULL)
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break;
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q=pixels;
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for (x=0; x < (ssize_t) image->columns; x++)
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{
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*q++=ScaleQuantumToChar(GetPixelBlue(p));
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*q++=ScaleQuantumToChar(GetPixelGreen(p));
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*q++=ScaleQuantumToChar(GetPixelRed(p));
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*q=ScaleQuantumToChar((Quantum) (QuantumRange-(image->matte !=
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MagickFalse ? GetPixelOpacity(p) : OpaqueOpacity)));
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if (*q == 255)
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*q=254;
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p++;
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q++;
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}
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count=WriteBlob(image,(size_t) (q-pixels),pixels);
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if (count != (ssize_t) (q-pixels))
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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,SaveImageTag,(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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pixels=(unsigned char *) RelinquishMagickMemory(pixels);
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if (GetNextImageInList(image) == (Image *) NULL)
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break;
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image=SyncNextImageInList(image);
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status=SetImageProgress(image,SaveImagesTag,scene++,imageListLength);
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if (status == MagickFalse)
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break;
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} while (image_info->adjoin != MagickFalse);
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(void) CloseBlob(image);
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return(MagickTrue);
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}
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