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|
/*
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% %
% %
% 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 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 "MagickCore/studio.h"
#include "MagickCore/blob.h"
#include "MagickCore/blob-private.h"
#include "MagickCore/cache.h"
#include "MagickCore/exception.h"
#include "MagickCore/exception-private.h"
#include "MagickCore/image.h"
#include "MagickCore/image-private.h"
#include "MagickCore/list.h"
#include "MagickCore/magick.h"
#include "MagickCore/memory_.h"
#include "MagickCore/option.h"
#include "MagickCore/pixel-accessor.h"
#include "MagickCore/property.h"
#include "MagickCore/quantum-private.h"
#include "MagickCore/static.h"
#include "MagickCore/string_.h"
#include "MagickCore/string-private.h"
#include "MagickCore/module.h"
#include "MagickCore/resource_.h"
#include "MagickCore/utility.h"
#if defined(MAGICKCORE_OPENEXR_DELEGATE)
#include <OpenEXRConfig.h>
#include <ImfCRgbaFile.h>
/*
Version 3.1.0 was released on 2021-07-21
We can remove backwards compatibility in a couple years.
*/
#define OPENEXR_VERSION_HACK \
(((OPENEXR_VERSION_MAJOR) << 24) | \
((OPENEXR_VERSION_MINOR) << 16) | \
((OPENEXR_VERSION_PATCH) << 8))
#if (OPENEXR_VERSION_HACK) >= 0x3010000
#define USE_OPENEXR_CORE
#include <openexr.h>
#endif
/*
Typedef declarations.
*/
#if defined(USE_OPENEXR_CORE)
typedef struct _EXRUserData
{
ExceptionInfo
*exception;
} EXRUserData;
#else
typedef struct _EXRWindowInfo
{
int
max_x,
max_y,
min_x,
min_y;
} EXRWindowInfo;
#endif
/*
Forward declarations.
*/
static MagickBooleanType
WriteEXRImage(const ImageInfo *,Image *,ExceptionInfo *);
#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.
%
*/
#if defined(USE_OPENEXR_CORE)
static void EXRError(exr_const_context_t ctxt,exr_result_t magick_unused(code),
const char* msg)
{
EXRUserData
*user_data;
magick_unreferenced(code);
exr_get_user_data(ctxt,(void **) &user_data);
(void) ThrowMagickException(user_data->exception,GetMagickModule(),
CoderError,"CorruptImage","`%s'",msg);
}
static MagickBooleanType InitializeEXRChannels(Image *image,exr_context_t ctxt,
exr_decode_pipeline_t decoder,size_t pixel_count,size_t columns,
PixelChannel *pixel_channels,size_t *pixel_size,uint8_t **data,
ExceptionInfo *exception)
{
char
channel_name[MagickPathExtent];
const char
*prefix;
exr_coding_channel_info_t
*channel;
int16_t
c;
MagickBooleanType
status;
size_t
prefix_length,
number_meta_channels;
uint8_t
*p;
*data=(uint8_t *) NULL;
if (decoder.channel_count >= (MaxPixelChannels-MetaPixelChannels))
ThrowBinaryException(CorruptImageError,"MaximumChannelsExceeded",
image->filename);
channel=decoder.channels;
prefix_length=0;
prefix=strrchr(decoder.channels[0].channel_name,'.');
if (prefix != (const char*) NULL)
{
/*
* When all channel names have the same prefix, we will skip that
* part when determining the channel type.
*/
prefix_length=1+(size_t)(prefix-decoder.channels[0].channel_name);
if (prefix_length < MagickPathExtent)
{
(void) CopyMagickString(channel_name,decoder.channels[0].channel_name
,prefix_length+1);
channel=decoder.channels;
for (c = 0; c < decoder.channel_count; ++c)
{
if (strncmp(channel->channel_name,channel_name,
prefix_length) != 0)
{
prefix_length=0;
break;
}
channel++;
}
}
}
channel=decoder.channels;
*pixel_size=0;
number_meta_channels=0;
status=MagickTrue;
for (c = 0; c < decoder.channel_count; ++c)
{
if ((channel->data_type != EXR_PIXEL_HALF) &&
(channel->data_type != EXR_PIXEL_FLOAT))
{
status=MagickFalse;
(void) ThrowMagickException(exception,GetMagickModule(),
CorruptImageError,"Unsupported channel data type","`%d'",
(int) channel->data_type );
break;
}
*pixel_size+=(size_t) channel->bytes_per_element;
if (LocaleNCompare(channel->channel_name+prefix_length,"R",1) == 0)
pixel_channels[c]=RedPixelChannel;
else if (LocaleNCompare(channel->channel_name+prefix_length,"G",1) == 0)
pixel_channels[c]=GreenPixelChannel;
else if (LocaleNCompare(channel->channel_name+prefix_length,"B",1) == 0)
pixel_channels[c]=BluePixelChannel;
else if (LocaleNCompare(channel->channel_name+prefix_length,"A",1) == 0)
{
pixel_channels[c]=AlphaPixelChannel;
image->alpha_trait=BlendPixelTrait;
}
else if (LocaleNCompare(channel->channel_name+prefix_length,"Y",1) == 0)
pixel_channels[c]=IndexPixelChannel; /* Gray channel */
else
{
pixel_channels[c]=(PixelChannel) (MetaPixelChannels+
number_meta_channels);
FormatLocaleString(channel_name,MagickPathExtent,
"exr:meta-channel.%d",(int) number_meta_channels);
number_meta_channels++;
SetImageProperty(image,channel_name,channel->channel_name,
exception);
}
channel++;
}
if ((status != MagickFalse) && (number_meta_channels > 0))
status=SetPixelMetaChannels(image,number_meta_channels,exception);
if (status == MagickFalse)
return(status);
if ((decoder.channel_count == 1) && (pixel_channels[0] == IndexPixelChannel))
image->colorspace=GRAYColorspace;
*data=(uint8_t *) AcquireQuantumMemory(*pixel_size,pixel_count);
if (*data == (uint8_t*)NULL)
{
exr_decoding_destroy(ctxt, &decoder);
ThrowBinaryException(ResourceLimitError,"MemoryAllocationFailed",
image->filename);
}
memset(*data,0,*pixel_size*pixel_count);
p=*data;
channel=decoder.channels;
for (c = 0; c < decoder.channel_count; ++c)
{
channel->decode_to_ptr=p;
channel->user_pixel_stride=(int32_t) *pixel_size;
channel->user_line_stride=(int32_t) (columns*(*pixel_size));
p+=(ptrdiff_t) channel->bytes_per_element;
channel++;
}
return(MagickTrue);
}
static inline MagickBooleanType ReadEXRPixels(Image *image,
exr_decode_pipeline_t decoder,PixelChannel *pixel_channels,uint8_t *p,
Quantum* q,size_t pixel_count,size_t columns,size_t stride,
ExceptionInfo *exception)
{
while (pixel_count > 0)
{
exr_coding_channel_info_t
*channel;
int16_t
c;
channel=decoder.channels;
for (c = 0; c < decoder.channel_count; ++c)
{
float
value;
PixelChannel
pixel_channel;
if (channel->data_type == EXR_PIXEL_HALF)
value=HalfToSinglePrecision(*(unsigned short *) p);
else
value=*(float *) p;
pixel_channel=pixel_channels[c];
if (pixel_channel == IndexPixelChannel)
SetPixelGray(image,ClampToQuantum((double) QuantumRange*value),q);
else
SetPixelChannel(image,pixel_channel,ClampToQuantum(
(double) QuantumRange*value),q);
p+=(ptrdiff_t) channel->bytes_per_element;
channel++;
}
q+=(ptrdiff_t) GetPixelChannels(image);
pixel_count--;
if ((stride != 0) && (pixel_count % columns == 0))
p+=(ptrdiff_t) stride;
}
return(SyncAuthenticPixels(image, exception));
}
static MagickBooleanType ReadEXRScanlineImage(exr_context_t ctxt,int part_index,
exr_attr_box2i_t data_window,Image *image,ExceptionInfo* exception)
{
exr_chunk_info_t
cinfo;
exr_decode_pipeline_t
decoder = EXR_DECODE_PIPELINE_INITIALIZER;
exr_result_t
result;
int32_t
scans_per_chunk;
MagickBooleanType
status;
PixelChannel
pixel_channels[MaxPixelChannels] = { UndefinedPixelChannel };
size_t
pixel_size,
pixel_count;
ssize_t
y;
uint8_t
*data;
result=exr_get_scanlines_per_chunk(ctxt,part_index,&scans_per_chunk);
if (result == EXR_ERR_SUCCESS)
result=exr_read_scanline_chunk_info(ctxt,part_index,data_window.min.y,
&cinfo);
if (result == EXR_ERR_SUCCESS)
result=exr_decoding_initialize(ctxt,part_index,&cinfo,&decoder);
if (result != EXR_ERR_SUCCESS)
ThrowBinaryException(CorruptImageError,"CorruptImage",image->filename);
pixel_count=(size_t) scans_per_chunk*image->columns;
status=InitializeEXRChannels(image,ctxt,decoder,pixel_count,image->columns,
pixel_channels,&pixel_size,&data,exception);
if (status == MagickFalse)
{
data=(uint8_t *) RelinquishMagickMemory(data);
exr_decoding_destroy(ctxt,&decoder);
return(status);
}
result=exr_decoding_choose_default_routines(ctxt,part_index,&decoder);
if (result != EXR_ERR_SUCCESS)
{
data=(uint8_t *) RelinquishMagickMemory(data);
exr_decoding_destroy(ctxt,&decoder);
ThrowBinaryException(CorruptImageError,"CorruptImage",image->filename);
}
for (y=0; y < (ssize_t) image->rows; y+= (ssize_t) scans_per_chunk)
{
Quantum
*q;
size_t
scans_count_to_read,
pixel_count_to_read;
if (y != 0)
{
int
yy = (int) y + data_window.min.y;
result=exr_read_scanline_chunk_info(ctxt,part_index,yy,&cinfo);
if (result == EXR_ERR_SUCCESS)
result=exr_decoding_update(ctxt,part_index,&cinfo,&decoder);
}
if (result == EXR_ERR_SUCCESS)
result=exr_decoding_run(ctxt,part_index,&decoder);
if (result != EXR_ERR_SUCCESS)
break;
scans_count_to_read=MagickMin((size_t) scans_per_chunk,image->rows-y);
pixel_count_to_read=scans_count_to_read*image->columns;
q=QueueAuthenticPixels(image,0,y,image->columns,scans_count_to_read,
exception);
if (q == (Quantum *) NULL)
break;
status=ReadEXRPixels(image,decoder,pixel_channels,data,q,pixel_count_to_read,
image->columns,0,exception);
if (status == MagickFalse)
break;
}
data=(uint8_t *) RelinquishMagickMemory(data);
exr_decoding_destroy(ctxt,&decoder);
if ((status != MagickFalse) && (result != EXR_ERR_SUCCESS))
status=MagickFalse;
return(status);
}
static MagickBooleanType ReadEXRTiledImage(exr_context_t ctxt,int part_index,
Image *image,ExceptionInfo* exception)
{
exr_chunk_info_t
cinfo;
exr_decode_pipeline_t
decoder = EXR_DECODE_PIPELINE_INITIALIZER;
exr_result_t
result;
int
tilex = 0,
tiley = 0;
MagickBooleanType
status;
PixelChannel
pixel_channels[MaxPixelChannels] = { UndefinedPixelChannel };
int32_t
levels_x,
levels_y,
tile_width = 0,
tile_height = 0;
size_t
pixel_size,
pixel_count;
ssize_t
y;
uint8_t
*data;
result=exr_get_tile_levels(ctxt,part_index,&levels_x,&levels_y);
if (result == EXR_ERR_SUCCESS)
result=exr_get_tile_sizes(ctxt,part_index,0,0,&tile_width,&tile_height);
if (result == EXR_ERR_SUCCESS)
result=exr_read_tile_chunk_info(ctxt,0,tilex,tiley,0,0,&cinfo);
if (result == EXR_ERR_SUCCESS)
result=exr_decoding_initialize(ctxt,part_index,&cinfo,&decoder);
if (result != EXR_ERR_SUCCESS)
ThrowBinaryException(CorruptImageError,"CorruptImage",image->filename);
if ((levels_x != 1) || (levels_y != 1))
{
exr_decoding_destroy(ctxt,&decoder);
(void) ThrowMagickException(exception,GetMagickModule(),
CorruptImageError,"Unsupported number of levels","`%d %d'",
levels_x,levels_y);
return(MagickFalse);
}
pixel_count=(size_t)tile_width*tile_height;
status=InitializeEXRChannels(image,ctxt,decoder,pixel_count,tile_width,
pixel_channels,&pixel_size,&data,exception);
if (status == MagickFalse)
{
data=(uint8_t *) RelinquishMagickMemory(data);
exr_decoding_destroy(ctxt,&decoder);
return(status);
}
result=exr_decoding_choose_default_routines(ctxt,part_index,&decoder);
if (result != EXR_ERR_SUCCESS)
{
data=(uint8_t *) RelinquishMagickMemory(data);
exr_decoding_destroy(ctxt,&decoder);
ThrowBinaryException(CorruptImageError,"CorruptImage",image->filename);
}
for (y=0; y < (ssize_t) image->rows; y+=(ssize_t) tile_height,tiley++)
{
Quantum
*q;
ssize_t
x;
tilex=0;
for (x=0; x < (ssize_t) image->columns; x+=(ssize_t) tile_width,tilex++)
{
size_t
columns,
rows,
stride;
if ((y != 0) || (x != 0))
{
result=exr_read_tile_chunk_info(ctxt,0,tilex,tiley,0,0,&cinfo);
if (result == EXR_ERR_SUCCESS)
result=exr_decoding_update(ctxt,part_index,&cinfo,&decoder);
}
if (result == EXR_ERR_SUCCESS)
result=exr_decoding_run(ctxt,part_index,&decoder);
if (result != EXR_ERR_SUCCESS)
break;
columns=MagickMin((size_t) tile_width,(size_t) image->columns-x);
rows=MagickMin((size_t) tile_height,(size_t) image->rows-y);
pixel_count=columns*rows;
q=QueueAuthenticPixels(image,x,y,columns,rows,exception);
if (q == (Quantum *) NULL)
break;
stride=(size_t) tile_width-columns;
if (stride != 0)
stride*=pixel_size;
status=ReadEXRPixels(image,decoder,pixel_channels,data,q,pixel_count,
columns,stride,exception);
if (status == MagickFalse)
break;
}
if ((status == MagickFalse) || (result != EXR_ERR_SUCCESS))
break;
}
data=(uint8_t *) RelinquishMagickMemory(data);
exr_decoding_destroy(ctxt,&decoder);
if ((status != MagickFalse) && (result != EXR_ERR_SUCCESS))
status=MagickFalse;
return(status);
}
static Image *ReadEXRImage(const ImageInfo *image_info,ExceptionInfo *exception)
{
exr_attr_box2i_t
data_window;
exr_compression_t
compression = EXR_COMPRESSION_NONE;
exr_context_t
ctxt;
exr_context_initializer_t
initializer = EXR_DEFAULT_CONTEXT_INITIALIZER;
exr_result_t
result;
exr_storage_t
storage_type = EXR_STORAGE_LAST_TYPE;
EXRUserData
user_data = { 0 };
Image
*image;
int
part_index = 0;
MagickBooleanType
status;
/*
Open image.
*/
assert(image_info != (const ImageInfo *) NULL);
assert(image_info->signature == MagickCoreSignature);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
image=AcquireImage(image_info,exception);
status=OpenBlob(image_info,image,ReadBinaryBlobMode,exception);
if (status == MagickFalse)
{
image=DestroyImageList(image);
return((Image *) NULL);
}
user_data.exception=exception;
initializer.error_handler_fn=EXRError;
initializer.user_data=(void *) &user_data;
initializer.max_image_height=(int) MagickMin(INT_MAX,
GetMagickResourceLimit(HeightResource));
initializer.max_image_width=(int) MagickMin(INT_MAX,
GetMagickResourceLimit(WidthResource));
result=exr_start_read(&ctxt,image->filename,&initializer);
if (result != EXR_ERR_SUCCESS)
{
exr_finish(&ctxt);
ThrowReaderException(BlobError,"UnableToOpenBlob");
}
result=exr_get_data_window(ctxt,part_index,&data_window);
if (result == EXR_ERR_SUCCESS)
result=exr_get_compression(ctxt,part_index,&compression);
if (result == EXR_ERR_SUCCESS)
result=exr_get_storage(ctxt,part_index,&storage_type);
if ((result != EXR_ERR_SUCCESS) ||
(data_window.min.x >= data_window.max.x) ||
(data_window.min.y >= data_window.max.y))
{
exr_finish(&ctxt);
ThrowReaderException(CorruptImageError,"CorruptImage");
}
image->columns=(size_t) (data_window.max.x-data_window.min.x+1L);
image->rows=(size_t) (data_window.max.y-data_window.min.y+1L);
image->gamma=1.0;
image->compression=NoCompression;
switch (compression)
{
case EXR_COMPRESSION_RLE: image->compression=RLECompression; break;
case EXR_COMPRESSION_ZIPS: image->compression=ZipSCompression; break;
case EXR_COMPRESSION_ZIP: image->compression=ZipCompression; break;
case EXR_COMPRESSION_PIZ: image->compression=PizCompression; break;
case EXR_COMPRESSION_PXR24: image->compression=Pxr24Compression; break;
case EXR_COMPRESSION_B44: image->compression=B44Compression; break;
case EXR_COMPRESSION_B44A: image->compression=B44ACompression; break;
case EXR_COMPRESSION_DWAA: image->compression=DWAACompression; break;
case EXR_COMPRESSION_DWAB: image->compression=DWABCompression; break;
default: break;
}
if (image_info->ping != MagickFalse)
{
exr_finish(&ctxt);
(void) CloseBlob(image);
return(GetFirstImageInList(image));
}
status=SetImageExtent(image,image->columns,image->rows,exception);
if (status == MagickFalse)
{
exr_finish(&ctxt);
(void) CloseBlob(image);
return(DestroyImageList(image));
}
switch (storage_type)
{
case EXR_STORAGE_SCANLINE:
case EXR_STORAGE_DEEP_SCANLINE:
status=ReadEXRScanlineImage(ctxt,part_index,data_window,image,exception);
break;
case EXR_STORAGE_TILED:
case EXR_STORAGE_DEEP_TILED:
status=ReadEXRTiledImage(ctxt,part_index,image,exception);
break;
default:
(void) ThrowMagickException(exception,GetMagickModule(),
CorruptImageError,"Unsupported storage type","`%d'",
(int) storage_type);
status=MagickFalse;
break;
}
exr_finish(&ctxt);
(void) CloseBlob(image);
if (status == MagickFalse)
return(DestroyImageList(image));
return(GetFirstImageInList(image));
}
#else
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);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",
image_info->filename);
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+1L);
image->rows=(size_t) (display_window.max_y-display_window.min_y+1L);
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)
{
(void) ImfCloseInputFile(file);
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+1L);
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+=(ptrdiff_t) GetPixelChannels(image);
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
continue;
}
(void) memset(scanline,0,columns*sizeof(*scanline));
if (ImfInputSetFrameBuffer(file,scanline-data_window.min_x-(ssize_t) columns*yy,1,columns) == 0)
{
status=MagickFalse;
break;
}
if (ImfInputReadPixels(file,yy,yy) == 0)
{
status=MagickFalse;
break;
}
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((double) QuantumRange*
(double) ImfHalfToFloat(scanline[xx].r)),q);
SetPixelGreen(image,ClampToQuantum((double) QuantumRange*
(double) ImfHalfToFloat(scanline[xx].g)),q);
SetPixelBlue(image,ClampToQuantum((double) QuantumRange*
(double) ImfHalfToFloat(scanline[xx].b)),q);
SetPixelAlpha(image,ClampToQuantum((double) QuantumRange*
(double) ImfHalfToFloat(scanline[xx].a)),q);
}
q+=(ptrdiff_t) GetPixelChannels(image);
}
if (SyncAuthenticPixels(image,exception) == MagickFalse)
break;
}
scanline=(ImfRgba *) RelinquishMagickMemory(scanline);
(void) ImfCloseInputFile(file);
if (status == MagickFalse)
ThrowReaderException(CorruptImageError,"UnableToReadImageData");
if (CloseBlob(image) == MagickFalse)
status=MagickFalse;
if (status == MagickFalse)
return(DestroyImageList(image));
return(GetFirstImageInList(image));
}
#endif
#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;
int
channels,
compression,
factors[3];
MagickBooleanType
status;
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);
assert(exception != (ExceptionInfo *) NULL);
assert(exception->signature == MagickCoreSignature);
if (IsEventLogging() != MagickFalse)
(void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",image->filename);
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 (MagickSscanf(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 (MagickSscanf(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((float) (QuantumScale*(double) GetPixelRed(image,p)),
&half_quantum);
scanline[x].r=half_quantum;
ImfFloatToHalf((float) (QuantumScale*(double) GetPixelGreen(image,p)),
&half_quantum);
scanline[x].g=half_quantum;
ImfFloatToHalf((float) (QuantumScale*(double) GetPixelBlue(image,p)),
&half_quantum);
scanline[x].b=half_quantum;
if ((image->alpha_trait & BlendPixelTrait) == 0)
ImfFloatToHalf(1.0,&half_quantum);
else
ImfFloatToHalf((float) (QuantumScale*(double) GetPixelAlpha(image,p)),
&half_quantum);
scanline[x].a=half_quantum;
p+=(ptrdiff_t) GetPixelChannels(image);
}
ImfOutputSetFrameBuffer(file,scanline-(y*(ssize_t) 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);
if (CloseBlob(image) == MagickFalse)
status=MagickFalse;
return(status);
}
#endif
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