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imagemagick/coders/exr.c

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Import Upstream version 6.9.11.60
2023-02-03 21:16:55 +08:00
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% EEEEE X X RRRR %
% E X X R R %
% EEE X RRRR %
% E X X R R %
% EEEEE X X R R %
% %
% %
% Read/Write High Dynamic-Range (HDR) Image File Format %
% %
% Software Design %
% Cristy %
% April 2007 %
% %
% %
% Copyright 1999-2021 ImageMagick Studio LLC, a non-profit organization %
% dedicated to making software imaging solutions freely available. %
% %
% You may not use this file except in compliance with the License. You may %
% obtain a copy of the License at %
% %
% https://imagemagick.org/script/license.php %
% %
% Unless required by applicable law or agreed to in writing, software %
% distributed under the License is distributed on an "AS IS" BASIS, %
% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. %
% See the License for the specific language governing permissions and %
% limitations under the License. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
%
*/
/*
Include declarations.
*/
#include "magick/studio.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/cache.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/image.h"
#include "magick/image-private.h"
#include "magick/list.h"
#include "magick/magick.h"
#include "magick/memory_.h"
#include "magick/option.h"
#include "magick/pixel-accessor.h"
#include "magick/property.h"
#include "magick/quantum-private.h"
#include "magick/static.h"
#include "magick/string_.h"
#include "magick/module.h"
#include "magick/resource_.h"
#include "magick/utility.h"
#if defined(MAGICKCORE_OPENEXR_DELEGATE)
#include <ImfCRgbaFile.h>
#if IMF_VERSION_NUMBER > 1
#include <OpenEXRConfig.h>
#endif
/*
Typedef declaractions.
*/
typedef struct _EXRWindowInfo
{
int
max_x,
max_y,
min_x,
min_y;
} EXRWindowInfo;
/*
Forward declarations.
*/
static MagickBooleanType
WriteEXRImage(const ImageInfo *,Image *);
#endif
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% I s E X R %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% IsEXR() returns MagickTrue if the image format type, identified by the
% magick string, is EXR.
%
% The format of the IsEXR method is:
%
% MagickBooleanType IsEXR(const unsigned char *magick,const size_t length)
%
% A description of each parameter follows:
%
% o magick: compare image format pattern against these bytes.
%
% o length: Specifies the length of the magick string.
%
*/
static MagickBooleanType IsEXR(const unsigned char *magick,const size_t length)
{
if (length < 4)
return(MagickFalse);
if (memcmp(magick,"\166\057\061\001",4) == 0)
return(MagickTrue);
return(MagickFalse);
}
#if defined(MAGICKCORE_OPENEXR_DELEGATE)
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e a d E X R I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% ReadEXRImage reads an image in the high dynamic-range (HDR) file format
% developed by Industrial Light & Magic. It allocates the memory necessary
% for the new Image structure and returns a pointer to the new image.
%
% The format of the ReadEXRImage method is:
%
% Image *ReadEXRImage(const ImageInfo *image_info,ExceptionInfo *exception)
%
% A description of each parameter follows:
%
% o image_info: the image info.
%
% o exception: return any errors or warnings in this structure.
%
*/
static Image *ReadEXRImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
const ImfHeader
*hdr_info;
EXRWindowInfo
data_window,
display_window;
Image
*image;
ImfInputFile
*file;
ImfRgba
*scanline;
MagickBooleanType
status;
PixelPacket
*q;
size_t
columns;
ssize_t
y;
/*
Open image.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickCoreSignature);
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
image=AcquireImage(image_info);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
file=ImfOpenInputFile(image->filename);
if (file == (ImfInputFile *) NULL)
{
ThrowFileException(exception,BlobError,"UnableToOpenBlob",
ImfErrorMessage());
image=DestroyImageList(image);
return((Image *) NULL);
}
hdr_info=ImfInputHeader(file);
ImfHeaderDisplayWindow(hdr_info,&display_window.min_x,&display_window.min_y,
&display_window.max_x,&display_window.max_y);
image->columns=(size_t) (display_window.max_x-display_window.min_x+1UL);
image->rows=(size_t) (display_window.max_y-display_window.min_y+1UL);
image->matte=MagickTrue;
(void) SetImageColorspace(image,RGBColorspace);
image->gamma=1.0;
if (image_info->ping != MagickFalse)
{
(void) ImfCloseInputFile(file);
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
status=SetImageExtent(image,image->columns,image->rows);
if (status == MagickFalse)
{
InheritException(exception,&image->exception);
return(DestroyImageList(image));
}
ImfHeaderDataWindow(hdr_info,&data_window.min_x,&data_window.min_y,
&data_window.max_x,&data_window.max_y);
columns=(size_t) (data_window.max_x-data_window.min_x+1UL);
if ((display_window.min_x > data_window.max_x) ||
(display_window.min_x+(int) image->columns <= data_window.min_x))
scanline=(ImfRgba *) NULL;
else
{
scanline=(ImfRgba *) AcquireQuantumMemory(columns,sizeof(*scanline));
if (scanline == (ImfRgba *) NULL)
{
(void) ImfCloseInputFile(file);
image=DestroyImageList(image);
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
}
}
for (y=0; y < (ssize_t) image->rows; y++)
{
int
yy;
ssize_t
x;
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (PixelPacket *) NULL)
break;
yy=(int) (display_window.min_y+y);
if ((yy < data_window.min_y) || (yy > data_window.max_y) ||
(scanline == (ImfRgba *) NULL))
{
for (x=0; x < (ssize_t) image->columns; x++)
{
SetPixelRed(q,image->background_color.red);
SetPixelGreen(q,image->background_color.green);
SetPixelBlue(q,image->background_color.blue);
SetPixelOpacity(q,image->background_color.opacity);
q++;
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
continue;
}
(void) memset(scanline,0,columns*sizeof(*scanline));
ImfInputSetFrameBuffer(file,scanline-data_window.min_x-columns*yy,1,
columns);
ImfInputReadPixels(file,yy,yy);
for (x=0; x < (ssize_t) image->columns; x++)
{
int
xx;
xx=(int) (display_window.min_x+x-data_window.min_x);
if ((xx < 0) || (display_window.min_x+(int) x > data_window.max_x))
{
SetPixelRed(q,image->background_color.red);
SetPixelGreen(q,image->background_color.green);
SetPixelBlue(q,image->background_color.blue);
SetPixelOpacity(q,image->background_color.opacity);
}
else
{
SetPixelRed(q,ClampToQuantum((MagickRealType) QuantumRange*
ImfHalfToFloat(scanline[xx].r)));
SetPixelGreen(q,ClampToQuantum((MagickRealType) QuantumRange*
ImfHalfToFloat(scanline[xx].g)));
SetPixelBlue(q,ClampToQuantum((MagickRealType) QuantumRange*
ImfHalfToFloat(scanline[xx].b)));
SetPixelAlpha(q,ClampToQuantum((MagickRealType) QuantumRange*
ImfHalfToFloat(scanline[xx].a)));
}
q++;
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
scanline=(ImfRgba *) RelinquishMagickMemory(scanline);
(void) ImfCloseInputFile(file);
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
#endif
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% R e g i s t e r E X R I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% RegisterEXRImage() adds properties for the EXR image format
% to the list of supported formats. The properties include the image format
% tag, a method to read and/or write the format, whether the format
% supports the saving of more than one frame to the same file or blob,
% whether the format supports native in-memory I/O, and a brief
% description of the format.
%
% The format of the RegisterEXRImage method is:
%
% size_t RegisterEXRImage(void)
%
*/
ModuleExport size_t RegisterEXRImage(void)
{
char
version[MagickPathExtent];
MagickInfo
*entry;
*version='\0';
entry=SetMagickInfo("EXR");
#if defined(MAGICKCORE_OPENEXR_DELEGATE)
entry->decoder=(DecodeImageHandler *) ReadEXRImage;
entry->encoder=(EncodeImageHandler *) WriteEXRImage;
#if defined( OPENEXR_PACKAGE_STRING)
(void) FormatLocaleString(version,MagickPathExtent,OPENEXR_PACKAGE_STRING);
#endif
#endif
entry->magick=(IsImageFormatHandler *) IsEXR;
if (*version != '\0')
entry->version=ConstantString(version);
entry->adjoin=MagickFalse;
entry->description=ConstantString("High Dynamic-range (HDR)");
entry->blob_support=MagickFalse;
entry->seekable_stream=MagickTrue;
entry->magick_module=ConstantString("EXR");
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% U n r e g i s t e r E X R I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% UnregisterEXRImage() removes format registrations made by the
% EXR module from the list of supported formats.
%
% The format of the UnregisterEXRImage method is:
%
% UnregisterEXRImage(void)
%
*/
ModuleExport void UnregisterEXRImage(void)
{
(void) UnregisterMagickInfo("EXR");
}
#if defined(MAGICKCORE_OPENEXR_DELEGATE)
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% W r i t e E X R I m a g e %
% %
% %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% WriteEXRImage() writes an image to a file the in the high dynamic-range
% (HDR) file format developed by Industrial Light & Magic.
%
% The format of the WriteEXRImage method is:
%
% MagickBooleanType WriteEXRImage(const ImageInfo *image_info,Image *image)
%
% A description of each parameter follows.
%
% o image_info: the image info.
%
% o image: The image.
%
*/
static MagickBooleanType WriteEXRImage(const ImageInfo *image_info,Image *image)
{
const char
*sampling_factor,
*value;
ImageInfo
*write_info;
ImfHalf
half_quantum;
ImfHeader
*hdr_info;
ImfOutputFile
*file;
ImfRgba
*scanline;
int
channels,
compression,
factors[3];
MagickBooleanType
status;
const PixelPacket
*p;
ssize_t
x;
ssize_t
y;
/*
Open output image file.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickCoreSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickCoreSignature);
if (image->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
status=OpenBlob(image_info,image,WriteBinaryBlobMode,&image->exception);
if (status == MagickFalse)
return(status);
(void) SetImageColorspace(image,RGBColorspace);
write_info=CloneImageInfo(image_info);
(void) AcquireUniqueFilename(write_info->filename);
hdr_info=ImfNewHeader();
ImfHeaderSetDataWindow(hdr_info,0,0,(int) image->columns-1,(int)
image->rows-1);
ImfHeaderSetDisplayWindow(hdr_info,0,0,(int) image->columns-1,(int)
image->rows-1);
compression=IMF_NO_COMPRESSION;
if (write_info->compression == ZipSCompression)
compression=IMF_ZIPS_COMPRESSION;
if (write_info->compression == ZipCompression)
compression=IMF_ZIP_COMPRESSION;
if (write_info->compression == PizCompression)
compression=IMF_PIZ_COMPRESSION;
if (write_info->compression == Pxr24Compression)
compression=IMF_PXR24_COMPRESSION;
#if defined(B44Compression)
if (write_info->compression == B44Compression)
compression=IMF_B44_COMPRESSION;
#endif
#if defined(B44ACompression)
if (write_info->compression == B44ACompression)
compression=IMF_B44A_COMPRESSION;
#endif
channels=0;
value=GetImageOption(image_info,"exr:color-type");
if (value != (const char *) NULL)
{
if (LocaleCompare(value,"RGB") == 0)
channels=IMF_WRITE_RGB;
else if (LocaleCompare(value,"RGBA") == 0)
channels=IMF_WRITE_RGBA;
else if (LocaleCompare(value,"YC") == 0)
channels=IMF_WRITE_YC;
else if (LocaleCompare(value,"YCA") == 0)
channels=IMF_WRITE_YCA;
else if (LocaleCompare(value,"Y") == 0)
channels=IMF_WRITE_Y;
else if (LocaleCompare(value,"YA") == 0)
channels=IMF_WRITE_YA;
else if (LocaleCompare(value,"R") == 0)
channels=IMF_WRITE_R;
else if (LocaleCompare(value,"G") == 0)
channels=IMF_WRITE_G;
else if (LocaleCompare(value,"B") == 0)
channels=IMF_WRITE_B;
else if (LocaleCompare(value,"A") == 0)
channels=IMF_WRITE_A;
else
(void) ThrowMagickException(&image->exception,GetMagickModule(),
CoderWarning,"ignoring invalid defined exr:color-type","=%s",value);
}
sampling_factor=(const char *) NULL;
factors[0]=0;
if (image_info->sampling_factor != (char *) NULL)
sampling_factor=image_info->sampling_factor;
if (sampling_factor != NULL)
{
/*
Sampling factors, valid values are 1x1 or 2x2.
*/
if (sscanf(sampling_factor,"%d:%d:%d",factors,factors+1,factors+2) == 3)
{
if ((factors[0] == factors[1]) && (factors[1] == factors[2]))
factors[0]=1;
else
if ((factors[0] == (2*factors[1])) && (factors[2] == 0))
factors[0]=2;
}
else
if (sscanf(sampling_factor,"%dx%d",factors,factors+1) == 2)
{
if (factors[0] != factors[1])
factors[0]=0;
}
if ((factors[0] != 1) && (factors[0] != 2))
(void) ThrowMagickException(&image->exception,GetMagickModule(),
CoderWarning,"ignoring sampling-factor","=%s",sampling_factor);
else if (channels != 0)
{
/*
Cross check given color type and subsampling.
*/
factors[1]=((channels == IMF_WRITE_YCA) ||
(channels == IMF_WRITE_YC)) ? 2 : 1;
if (factors[0] != factors[1])
(void) ThrowMagickException(&image->exception,GetMagickModule(),
CoderWarning,"sampling-factor and color type mismatch","=%s",
sampling_factor);
}
}
if (channels == 0)
{
/*
If no color type given, select it now.
*/
if (factors[0] == 2)
channels=image->matte ? IMF_WRITE_YCA : IMF_WRITE_YC;
else
channels=image->matte ? IMF_WRITE_RGBA : IMF_WRITE_RGB;
}
ImfHeaderSetCompression(hdr_info,compression);
ImfHeaderSetLineOrder(hdr_info,IMF_INCREASING_Y);
file=ImfOpenOutputFile(write_info->filename,hdr_info,channels);
ImfDeleteHeader(hdr_info);
if (file == (ImfOutputFile *) NULL)
{
(void) RelinquishUniqueFileResource(write_info->filename);
write_info=DestroyImageInfo(write_info);
ThrowFileException(&image->exception,BlobError,"UnableToOpenBlob",
ImfErrorMessage());
return(MagickFalse);
}
scanline=(ImfRgba *) AcquireQuantumMemory(image->columns,sizeof(*scanline));
if (scanline == (ImfRgba *) NULL)
{
(void) ImfCloseOutputFile(file);
(void) RelinquishUniqueFileResource(write_info->filename);
write_info=DestroyImageInfo(write_info);
ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed");
}
memset(scanline,0,image->columns*sizeof(*scanline));
for (y=0; y < (ssize_t) image->rows; y++)
{
p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception);
if (p == (const PixelPacket *) NULL)
break;
for (x=0; x < (ssize_t) image->columns; x++)
{
ImfFloatToHalf(QuantumScale*GetPixelRed(p),&half_quantum);
scanline[x].r=half_quantum;
ImfFloatToHalf(QuantumScale*GetPixelGreen(p),&half_quantum);
scanline[x].g=half_quantum;
ImfFloatToHalf(QuantumScale*GetPixelBlue(p),&half_quantum);
scanline[x].b=half_quantum;
if (image->matte == MagickFalse)
ImfFloatToHalf(1.0,&half_quantum);
else
ImfFloatToHalf(1.0-QuantumScale*GetPixelOpacity(p),&half_quantum);
scanline[x].a=half_quantum;
p++;
}
ImfOutputSetFrameBuffer(file,scanline-(y*image->columns),1,image->columns);
ImfOutputWritePixels(file,1);
}
(void) ImfCloseOutputFile(file);
scanline=(ImfRgba *) RelinquishMagickMemory(scanline);
(void) FileToImage(image,write_info->filename);
(void) RelinquishUniqueFileResource(write_info->filename);
write_info=DestroyImageInfo(write_info);
(void) CloseBlob(image);
return(MagickTrue);
}
#endif