This source file includes following definitions.
- IsEXR
- ReadEXRImage
- RegisterEXRImage
- UnregisterEXRImage
- WriteEXRImage
#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>
static MagickBooleanType
WriteEXRImage(const ImageInfo *,Image *);
#endif
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)
static Image *ReadEXRImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
const ImfHeader
*hdr_info;
Image
*image;
ImageInfo
*read_info;
ImfInputFile
*file;
ImfRgba
*scanline;
int
max_x,
max_y,
min_x,
min_y;
MagickBooleanType
status;
register ssize_t
x;
register PixelPacket
*q;
ssize_t
y;
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
if (image_info->debug != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickSignature);
image=AcquireImage(image_info);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
read_info=CloneImageInfo(image_info);
if (IsPathAccessible(read_info->filename) == MagickFalse)
{
(void) AcquireUniqueFilename(read_info->filename);
(void) ImageToFile(image,read_info->filename,exception);
}
file=ImfOpenInputFile(read_info->filename);
if (file == (ImfInputFile *) NULL)
{
ThrowFileException(exception,BlobError,"UnableToOpenBlob",
ImfErrorMessage());
if (LocaleCompare(image_info->filename,read_info->filename) != 0)
(void) RelinquishUniqueFileResource(read_info->filename);
read_info=DestroyImageInfo(read_info);
return((Image *) NULL);
}
hdr_info=ImfInputHeader(file);
ImfHeaderDisplayWindow(hdr_info,&min_x,&min_y,&max_x,&max_y);
image->columns=max_x-min_x+1UL;
image->rows=max_y-min_y+1UL;
image->matte=MagickTrue;
SetImageColorspace(image,RGBColorspace);
image->gamma=1.0;
if (image_info->ping != MagickFalse)
{
(void) ImfCloseInputFile(file);
if (LocaleCompare(image_info->filename,read_info->filename) != 0)
(void) RelinquishUniqueFileResource(read_info->filename);
read_info=DestroyImageInfo(read_info);
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
status=SetImageExtent(image,image->columns,image->rows);
if (status == MagickFalse)
{
InheritException(exception,&image->exception);
return(DestroyImageList(image));
}
scanline=(ImfRgba *) AcquireQuantumMemory(image->columns,sizeof(*scanline));
if (scanline == (ImfRgba *) NULL)
{
(void) ImfCloseInputFile(file);
if (LocaleCompare(image_info->filename,read_info->filename) != 0)
(void) RelinquishUniqueFileResource(read_info->filename);
read_info=DestroyImageInfo(read_info);
ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed");
}
for (y=0; y < (ssize_t) image->rows; y++)
{
q=QueueAuthenticPixels(image,0,y,image->columns,1,exception);
if (q == (PixelPacket *) NULL)
break;
ResetMagickMemory(scanline,0,image->columns*sizeof(*scanline));
ImfInputSetFrameBuffer(file,scanline-min_x-image->columns*(min_y+y),1,
image->columns);
ImfInputReadPixels(file,min_y+y,min_y+y);
for (x=0; x < (ssize_t) image->columns; x++)
{
SetPixelRed(q,ClampToQuantum((MagickRealType) QuantumRange*
ImfHalfToFloat(scanline[x].r)));
SetPixelGreen(q,ClampToQuantum((MagickRealType) QuantumRange*
ImfHalfToFloat(scanline[x].g)));
SetPixelBlue(q,ClampToQuantum((MagickRealType) QuantumRange*
ImfHalfToFloat(scanline[x].b)));
SetPixelAlpha(q,ClampToQuantum((MagickRealType) QuantumRange*
ImfHalfToFloat(scanline[x].a)));
q++;
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
scanline=(ImfRgba *) RelinquishMagickMemory(scanline);
(void) ImfCloseInputFile(file);
if (LocaleCompare(image_info->filename,read_info->filename) != 0)
(void) RelinquishUniqueFileResource(read_info->filename);
read_info=DestroyImageInfo(read_info);
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
#endif
ModuleExport size_t RegisterEXRImage(void)
{
MagickInfo
*entry;
entry=SetMagickInfo("EXR");
#if defined(MAGICKCORE_OPENEXR_DELEGATE)
entry->decoder=(DecodeImageHandler *) ReadEXRImage;
entry->encoder=(EncodeImageHandler *) WriteEXRImage;
#endif
entry->magick=(IsImageFormatHandler *) IsEXR;
entry->adjoin=MagickFalse;
entry->description=ConstantString("High Dynamic-range (HDR)");
entry->blob_support=MagickFalse;
entry->module=ConstantString("EXR");
(void) RegisterMagickInfo(entry);
return(MagickImageCoderSignature);
}
ModuleExport void UnregisterEXRImage(void)
{
(void) UnregisterMagickInfo("EXR");
}
#if defined(MAGICKCORE_OPENEXR_DELEGATE)
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;
register const PixelPacket
*p;
register ssize_t
x;
ssize_t
y;
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickSignature);
assert(image != (Image *) NULL);
assert(image->signature == MagickSignature);
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)
{
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)
{
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 (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");
}
ResetMagickMemory(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