462 lines
17 KiB
C
462 lines
17 KiB
C
/*
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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% %
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% %
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% %
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% EEEEE X X RRRR %
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% E X X R R %
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% EEE X RRRR %
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% E X X R R %
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% EEEEE X X R R %
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% %
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% %
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% Read/Write High Dynamic-Range (HDR) Image File Format %
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% %
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% Software Design %
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% John Cristy %
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% April 2007 %
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% %
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% %
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% Copyright 1999-2013 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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% http://www.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/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/pixel-accessor.h"
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#include "magick/property.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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#include "magick/resource_.h"
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#include "magick/utility.h"
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#if defined(MAGICKCORE_OPENEXR_DELEGATE)
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#include <ImfCRgbaFile.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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WriteEXRImage(const ImageInfo *,Image *);
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#endif
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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 E X R %
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% %
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% %
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% %
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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%
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% IsEXR() returns MagickTrue if the image format type, identified by the
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% magick string, is EXR.
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%
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% The format of the IsEXR method is:
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%
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% MagickBooleanType IsEXR(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 IsEXR(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,"\166\057\061\001",4) == 0)
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return(MagickTrue);
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return(MagickFalse);
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}
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#if defined(MAGICKCORE_OPENEXR_DELEGATE)
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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 E X R 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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% ReadEXRImage reads an image in the high dynamic-range (HDR) file format
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% developed by Industrial Light & Magic. It allocates the memory necessary
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% for the new Image structure and returns a pointer to the new image.
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%
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% The format of the ReadEXRImage method is:
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%
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% Image *ReadEXRImage(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 *ReadEXRImage(const ImageInfo *image_info,ExceptionInfo *exception)
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{
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const ImfHeader
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*hdr_info;
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Image
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*image;
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ImageInfo
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*read_info;
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ImfInputFile
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*file;
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ImfRgba
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*scanline;
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int
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max_x,
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max_y,
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min_x,
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min_y;
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MagickBooleanType
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status;
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register ssize_t
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x;
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register PixelPacket
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*q;
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ssize_t
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y;
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/*
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Open image.
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*/
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assert(image_info != (const ImageInfo *) NULL);
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assert(image_info->signature == MagickSignature);
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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 == MagickSignature);
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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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read_info=CloneImageInfo(image_info);
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if (IsPathAccessible(read_info->filename) == MagickFalse)
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{
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(void) AcquireUniqueFilename(read_info->filename);
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(void) ImageToFile(image,read_info->filename,exception);
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}
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file=ImfOpenInputFile(read_info->filename);
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if (file == (ImfInputFile *) NULL)
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{
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ThrowFileException(exception,BlobError,"UnableToOpenBlob",
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ImfErrorMessage());
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read_info=DestroyImageInfo(read_info);
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return((Image *) NULL);
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}
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hdr_info=ImfInputHeader(file);
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ImfHeaderDisplayWindow(hdr_info,&min_x,&min_y,&max_x,&max_y);
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image->columns=max_x-min_x+1UL;
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image->rows=max_y-min_y+1UL;
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image->matte=MagickTrue;
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SetImageColorspace(image,RGBColorspace);
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if (image_info->ping != MagickFalse)
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{
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(void) ImfCloseInputFile(file);
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if (LocaleCompare(image_info->filename,read_info->filename) != 0)
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(void) RelinquishUniqueFileResource(read_info->filename);
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read_info=DestroyImageInfo(read_info);
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(void) CloseBlob(image);
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return(GetFirstImageInList(image));
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}
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scanline=(ImfRgba *) AcquireQuantumMemory(image->columns,sizeof(*scanline));
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if (scanline == (ImfRgba *) NULL)
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{
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(void) ImfCloseInputFile(file);
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ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
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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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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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ImfInputSetFrameBuffer(file,scanline-min_x-image->columns*(min_y+y),1,
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image->columns);
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ImfInputReadPixels(file,min_y+y,min_y+y);
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for (x=0; x < (ssize_t) image->columns; x++)
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{
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SetPixelRed(q,ClampToQuantum((MagickRealType) QuantumRange*
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ImfHalfToFloat(scanline[x].r)));
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SetPixelGreen(q,ClampToQuantum((MagickRealType) QuantumRange*
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ImfHalfToFloat(scanline[x].g)));
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SetPixelBlue(q,ClampToQuantum((MagickRealType) QuantumRange*
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ImfHalfToFloat(scanline[x].b)));
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SetPixelAlpha(q,ClampToQuantum((MagickRealType) QuantumRange*
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ImfHalfToFloat(scanline[x].a)));
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q++;
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}
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if (SyncAuthenticPixels(image,exception) == MagickFalse)
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break;
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}
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scanline=(ImfRgba *) RelinquishMagickMemory(scanline);
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(void) ImfCloseInputFile(file);
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if (LocaleCompare(image_info->filename,read_info->filename) != 0)
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(void) RelinquishUniqueFileResource(read_info->filename);
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read_info=DestroyImageInfo(read_info);
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(void) CloseBlob(image);
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return(GetFirstImageInList(image));
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}
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#endif
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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 E X R 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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% RegisterEXRImage() adds properties for the EXR image format
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% to the list of supported formats. The properties 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 RegisterEXRImage method is:
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%
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% size_t RegisterEXRImage(void)
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%
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*/
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ModuleExport size_t RegisterEXRImage(void)
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{
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MagickInfo
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*entry;
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entry=SetMagickInfo("EXR");
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#if defined(MAGICKCORE_OPENEXR_DELEGATE)
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entry->decoder=(DecodeImageHandler *) ReadEXRImage;
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entry->encoder=(EncodeImageHandler *) WriteEXRImage;
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#endif
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entry->magick=(IsImageFormatHandler *) IsEXR;
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entry->adjoin=MagickFalse;
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entry->description=ConstantString("High Dynamic-range (HDR)");
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entry->blob_support=MagickFalse;
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entry->module=ConstantString("EXR");
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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 E X R 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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% UnregisterEXRImage() removes format registrations made by the
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% EXR module from the list of supported formats.
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%
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% The format of the UnregisterEXRImage method is:
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%
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% UnregisterEXRImage(void)
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%
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*/
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ModuleExport void UnregisterEXRImage(void)
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{
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(void) UnregisterMagickInfo("EXR");
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}
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#if defined(MAGICKCORE_OPENEXR_DELEGATE)
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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 E X R 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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% WriteEXRImage() writes an image to a file the in the high dynamic-range
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% (HDR) file format developed by Industrial Light & Magic.
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%
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% The format of the WriteEXRImage method is:
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%
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% MagickBooleanType WriteEXRImage(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 WriteEXRImage(const ImageInfo *image_info,Image *image)
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{
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ImageInfo
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*write_info;
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ImfHalf
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half_quantum;
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ImfHeader
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*hdr_info;
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ImfOutputFile
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*file;
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ImfRgba
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*scanline;
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int
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compression;
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MagickBooleanType
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status;
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register const PixelPacket
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*p;
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register ssize_t
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x;
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ssize_t
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y;
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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 == MagickSignature);
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assert(image != (Image *) NULL);
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assert(image->signature == MagickSignature);
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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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(void) SetImageColorspace(image,RGBColorspace);
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write_info=CloneImageInfo(image_info);
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(void) AcquireUniqueFilename(write_info->filename);
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hdr_info=ImfNewHeader();
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ImfHeaderSetDataWindow(hdr_info,0,0,(int) image->columns-1,(int)
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image->rows-1);
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ImfHeaderSetDisplayWindow(hdr_info,0,0,(int) image->columns-1,(int)
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image->rows-1);
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compression=IMF_NO_COMPRESSION;
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if (write_info->compression == ZipSCompression)
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compression=IMF_ZIPS_COMPRESSION;
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if (write_info->compression == ZipCompression)
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compression=IMF_ZIP_COMPRESSION;
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if (write_info->compression == PizCompression)
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compression=IMF_PIZ_COMPRESSION;
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if (write_info->compression == Pxr24Compression)
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compression=IMF_PXR24_COMPRESSION;
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#if defined(B44Compression)
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if (write_info->compression == B44Compression)
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compression=IMF_B44_COMPRESSION;
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#endif
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#if defined(B44ACompression)
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if (write_info->compression == B44ACompression)
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compression=IMF_B44A_COMPRESSION;
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#endif
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ImfHeaderSetCompression(hdr_info,compression);
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ImfHeaderSetLineOrder(hdr_info,IMF_INCREASING_Y);
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file=ImfOpenOutputFile(write_info->filename,hdr_info,IMF_WRITE_RGBA);
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ImfDeleteHeader(hdr_info);
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if (file == (ImfOutputFile *) NULL)
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{
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ThrowFileException(&image->exception,BlobError,"UnableToOpenBlob",
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ImfErrorMessage());
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write_info=DestroyImageInfo(write_info);
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return(MagickFalse);
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}
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scanline=(ImfRgba *) AcquireQuantumMemory(image->columns,sizeof(*scanline));
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if (scanline == (ImfRgba *) NULL)
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{
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(void) ImfCloseOutputFile(file);
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ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
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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 == (const 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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ImfFloatToHalf(QuantumScale*GetPixelRed(p),&half_quantum);
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scanline[x].r=half_quantum;
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ImfFloatToHalf(QuantumScale*GetPixelGreen(p),&half_quantum);
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scanline[x].g=half_quantum;
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ImfFloatToHalf(QuantumScale*GetPixelBlue(p),&half_quantum);
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scanline[x].b=half_quantum;
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if (image->matte == MagickFalse)
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ImfFloatToHalf(1.0,&half_quantum);
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else
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ImfFloatToHalf(1.0-QuantumScale*GetPixelOpacity(p),
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&half_quantum);
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scanline[x].a=half_quantum;
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p++;
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}
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ImfOutputSetFrameBuffer(file,scanline-(y*image->columns),1,image->columns);
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ImfOutputWritePixels(file,1);
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}
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(void) ImfCloseOutputFile(file);
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scanline=(ImfRgba *) RelinquishMagickMemory(scanline);
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(void) FileToImage(image,write_info->filename);
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(void) RelinquishUniqueFileResource(write_info->filename);
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write_info=DestroyImageInfo(write_info);
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(void) CloseBlob(image);
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return(MagickTrue);
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}
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#endif
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