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/*
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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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% Cristy %
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% April 2007 %
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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 "MagickCore/studio.h"
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#include "MagickCore/blob.h"
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#include "MagickCore/blob-private.h"
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#include "MagickCore/cache.h"
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#include "MagickCore/exception.h"
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#include "MagickCore/exception-private.h"
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#include "MagickCore/image.h"
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#include "MagickCore/image-private.h"
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#include "MagickCore/list.h"
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#include "MagickCore/magick.h"
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#include "MagickCore/memory_.h"
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#include "MagickCore/option.h"
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#include "MagickCore/pixel-accessor.h"
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#include "MagickCore/property.h"
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#include "MagickCore/quantum-private.h"
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#include "MagickCore/static.h"
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#include "MagickCore/string_.h"
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#include "MagickCore/module.h"
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#include "MagickCore/resource_.h"
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#include "MagickCore/utility.h"
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#if defined(MAGICKCORE_OPENEXR_DELEGATE)
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#include <ImfCRgbaFile.h>
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#if IMF_VERSION_NUMBER > 1
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#include <OpenEXRConfig.h>
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|
#endif
|
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/*
|
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Typedef declaractions.
|
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*/
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typedef struct _EXRWindowInfo
|
|
|
{
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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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} EXRWindowInfo;
|
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/*
|
|
|
Forward declarations.
|
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|
*/
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static MagickBooleanType
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|
WriteEXRImage(const ImageInfo *,Image *,ExceptionInfo *);
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#endif
|
|
|
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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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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%
|
|
|
% IsEXR() returns MagickTrue if the image format type, identified by the
|
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|
% magick string, is EXR.
|
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|
%
|
|
|
% The format of the IsEXR method is:
|
|
|
%
|
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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)
|
|
|
{
|
|
|
if (length < 4)
|
|
|
return(MagickFalse);
|
|
|
if (memcmp(magick,"\166\057\061\001",4) == 0)
|
|
|
return(MagickTrue);
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|
|
return(MagickFalse);
|
|
|
}
|
|
|
|
|
|
#if defined(MAGICKCORE_OPENEXR_DELEGATE)
|
|
|
/*
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
% %
|
|
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% %
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% %
|
|
|
% R e a d E X R I m a g e %
|
|
|
% %
|
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|
% %
|
|
|
% %
|
|
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|
|
|
%
|
|
|
% 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;
|
|
|
|
|
|
int
|
|
|
compression;
|
|
|
|
|
|
MagickBooleanType
|
|
|
status;
|
|
|
|
|
|
Quantum
|
|
|
*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,exception);
|
|
|
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);
|
|
|
ImfHeaderDataWindow(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->alpha_trait=BlendPixelTrait;
|
|
|
(void) SetImageColorspace(image,RGBColorspace,exception);
|
|
|
image->gamma=1.0;
|
|
|
image->compression=NoCompression;
|
|
|
compression=ImfHeaderCompression(hdr_info);
|
|
|
if (compression == IMF_RLE_COMPRESSION)
|
|
|
image->compression=RLECompression;
|
|
|
if (compression == IMF_ZIPS_COMPRESSION)
|
|
|
image->compression=ZipSCompression;
|
|
|
if (compression == IMF_ZIP_COMPRESSION)
|
|
|
image->compression=ZipCompression;
|
|
|
if (compression == IMF_PIZ_COMPRESSION)
|
|
|
image->compression=PizCompression;
|
|
|
if (compression == IMF_PXR24_COMPRESSION)
|
|
|
image->compression=Pxr24Compression;
|
|
|
#if defined(IMF_B44_COMPRESSION)
|
|
|
if (compression == IMF_B44_COMPRESSION)
|
|
|
image->compression=B44Compression;
|
|
|
#endif
|
|
|
#if defined(IMF_B44A_COMPRESSION)
|
|
|
if (compression == IMF_B44A_COMPRESSION)
|
|
|
image->compression=B44ACompression;
|
|
|
#endif
|
|
|
#if defined(IMF_DWAA_COMPRESSION)
|
|
|
if (compression == IMF_DWAA_COMPRESSION)
|
|
|
image->compression=DWAACompression;
|
|
|
#endif
|
|
|
#if defined(IMF_DWAB_COMPRESSION)
|
|
|
if (compression == IMF_DWAB_COMPRESSION)
|
|
|
image->compression=DWABCompression;
|
|
|
#endif
|
|
|
if (image_info->ping != MagickFalse)
|
|
|
{
|
|
|
(void) ImfCloseInputFile(file);
|
|
|
(void) CloseBlob(image);
|
|
|
return(GetFirstImageInList(image));
|
|
|
}
|
|
|
status=SetImageExtent(image,image->columns,image->rows,exception);
|
|
|
if (status == MagickFalse)
|
|
|
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 == (Quantum *) 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++)
|
|
|
{
|
|
|
SetPixelViaPixelInfo(image,&image->background_color,q);
|
|
|
q+=GetPixelChannels(image);
|
|
|
}
|
|
|
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))
|
|
|
SetPixelViaPixelInfo(image,&image->background_color,q);
|
|
|
else
|
|
|
{
|
|
|
SetPixelRed(image,ClampToQuantum((MagickRealType) QuantumRange*
|
|
|
ImfHalfToFloat(scanline[xx].r)),q);
|
|
|
SetPixelGreen(image,ClampToQuantum((MagickRealType) QuantumRange*
|
|
|
ImfHalfToFloat(scanline[xx].g)),q);
|
|
|
SetPixelBlue(image,ClampToQuantum((MagickRealType) QuantumRange*
|
|
|
ImfHalfToFloat(scanline[xx].b)),q);
|
|
|
SetPixelAlpha(image,ClampToQuantum((MagickRealType) QuantumRange*
|
|
|
ImfHalfToFloat(scanline[xx].a)),q);
|
|
|
}
|
|
|
q+=GetPixelChannels(image);
|
|
|
}
|
|
|
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=AcquireMagickInfo("EXR","EXR","High Dynamic-range (HDR)");
|
|
|
#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->flags|=CoderDecoderSeekableStreamFlag;
|
|
|
entry->flags^=CoderAdjoinFlag;
|
|
|
entry->flags^=CoderBlobSupportFlag;
|
|
|
(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,ExceptionInfo *exception)
|
|
|
%
|
|
|
% A description of each parameter follows.
|
|
|
%
|
|
|
% o image_info: the image info.
|
|
|
%
|
|
|
% o image: The image.
|
|
|
%
|
|
|
% o exception: return any errors or warnings in this structure.
|
|
|
%
|
|
|
*/
|
|
|
static MagickBooleanType WriteEXRImage(const ImageInfo *image_info,Image *image,
|
|
|
ExceptionInfo *exception)
|
|
|
{
|
|
|
const char
|
|
|
*sampling_factor,
|
|
|
*value;
|
|
|
|
|
|
ImageInfo
|
|
|
*write_info;
|
|
|
|
|
|
ImfHalf
|
|
|
half_quantum;
|
|
|
|
|
|
ImfHeader
|
|
|
*hdr_info;
|
|
|
|
|
|
ImfOutputFile
|
|
|
*file;
|
|
|
|
|
|
ImfRgba
|
|
|
*scanline;
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|
|
|
|
|
int
|
|
|
channels,
|
|
|
compression,
|
|
|
factors[3];
|
|
|
|
|
|
MagickBooleanType
|
|
|
status;
|
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|
|
|
|
const Quantum
|
|
|
*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);
|
|
|
assert(exception != (ExceptionInfo *) NULL);
|
|
|
assert(exception->signature == MagickCoreSignature);
|
|
|
status=OpenBlob(image_info,image,WriteBinaryBlobMode,exception);
|
|
|
if (status == MagickFalse)
|
|
|
return(status);
|
|
|
(void) SetImageColorspace(image,RGBColorspace,exception);
|
|
|
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 == RLECompression)
|
|
|
compression=IMF_RLE_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(IMF_B44_COMPRESSION)
|
|
|
if (write_info->compression == B44Compression)
|
|
|
compression=IMF_B44_COMPRESSION;
|
|
|
#endif
|
|
|
#if defined(IMF_B44A_COMPRESSION)
|
|
|
if (write_info->compression == B44ACompression)
|
|
|
compression=IMF_B44A_COMPRESSION;
|
|
|
#endif
|
|
|
#if defined(IMF_DWAA_COMPRESSION)
|
|
|
if (write_info->compression == DWAACompression)
|
|
|
compression=IMF_DWAA_COMPRESSION;
|
|
|
#endif
|
|
|
#if defined(IMF_DWAB_COMPRESSION)
|
|
|
if (write_info->compression == DWABCompression)
|
|
|
compression=IMF_DWAB_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(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(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(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->alpha_trait != UndefinedPixelTrait ? IMF_WRITE_YCA :
|
|
|
IMF_WRITE_YC;
|
|
|
else
|
|
|
channels=image->alpha_trait != UndefinedPixelTrait ? 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(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,exception);
|
|
|
if (p == (const Quantum *) NULL)
|
|
|
break;
|
|
|
for (x=0; x < (ssize_t) image->columns; x++)
|
|
|
{
|
|
|
ImfFloatToHalf(QuantumScale*GetPixelRed(image,p),&half_quantum);
|
|
|
scanline[x].r=half_quantum;
|
|
|
ImfFloatToHalf(QuantumScale*GetPixelGreen(image,p),&half_quantum);
|
|
|
scanline[x].g=half_quantum;
|
|
|
ImfFloatToHalf(QuantumScale*GetPixelBlue(image,p),&half_quantum);
|
|
|
scanline[x].b=half_quantum;
|
|
|
if (image->alpha_trait == UndefinedPixelTrait)
|
|
|
ImfFloatToHalf(1.0,&half_quantum);
|
|
|
else
|
|
|
ImfFloatToHalf(QuantumScale*GetPixelAlpha(image,p),&half_quantum);
|
|
|
scanline[x].a=half_quantum;
|
|
|
p+=GetPixelChannels(image);
|
|
|
}
|
|
|
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,exception);
|
|
|
(void) RelinquishUniqueFileResource(write_info->filename);
|
|
|
write_info=DestroyImageInfo(write_info);
|
|
|
(void) CloseBlob(image);
|
|
|
return(MagickTrue);
|
|
|
}
|
|
|
#endif
|
