| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % 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 % |
| % John Cristy % |
| % April 2007 % |
| % % |
| % % |
| % Copyright 1999-2010 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 % |
| % % |
| % http://www.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/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> |
| |
| /* |
| 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; |
| |
| Image |
| *image; |
| |
| ImageInfo |
| *read_info; |
| |
| ImfInputFile |
| *file; |
| |
| ImfRgba |
| *scanline; |
| |
| int |
| max_x, |
| max_y, |
| min_x, |
| min_y; |
| |
| long |
| y; |
| |
| register long |
| x; |
| |
| register PixelPacket |
| *q; |
| |
| MagickBooleanType |
| status; |
| |
| /* |
| Open image. |
| */ |
| 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()); |
| read_info=DestroyImageInfo(read_info); |
| return((Image *) NULL); |
| } |
| hdr_info=ImfInputHeader(file); |
| ImfHeaderDataWindow(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; |
| 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)); |
| } |
| scanline=(ImfRgba *) AcquireQuantumMemory(image->columns,sizeof(*scanline)); |
| if (scanline == (ImfRgba *) NULL) |
| { |
| (void) ImfCloseInputFile(file); |
| ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); |
| } |
| for (y=0; y < (long) image->rows; y++) |
| { |
| q=QueueAuthenticPixels(image,0,y,image->columns,1,exception); |
| if (q == (PixelPacket *) NULL) |
| break; |
| 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 < (long) image->columns; x++) |
| { |
| q->red=ClampToQuantum((MagickRealType) QuantumRange*ImfHalfToFloat( |
| scanline[x].r)); |
| q->green=ClampToQuantum((MagickRealType) QuantumRange*ImfHalfToFloat( |
| scanline[x].g)); |
| q->blue=ClampToQuantum((MagickRealType) QuantumRange*ImfHalfToFloat( |
| scanline[x].b)); |
| q->opacity=ClampToQuantum((MagickRealType) QuantumRange-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 |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % 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: |
| % |
| % unsigned long RegisterEXRImage(void) |
| % |
| */ |
| ModuleExport unsigned long 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); |
| } |
| |
| /* |
| %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| % % |
| % % |
| % % |
| % 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) |
| { |
| ImageInfo |
| *write_info; |
| |
| ImfHalf |
| half_quantum; |
| |
| ImfHeader |
| *hdr_info; |
| |
| ImfOutputFile |
| *file; |
| |
| ImfRgba |
| *scanline; |
| |
| int |
| compression; |
| |
| long |
| y; |
| |
| MagickBooleanType |
| status; |
| |
| register const PixelPacket |
| *p; |
| |
| register long |
| x; |
| |
| /* |
| Open output image file. |
| */ |
| 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); |
| 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 |
| ImfHeaderSetCompression(hdr_info,compression); |
| ImfHeaderSetLineOrder(hdr_info,IMF_INCREASING_Y); |
| file=ImfOpenOutputFile(write_info->filename,hdr_info,IMF_WRITE_RGBA); |
| ImfDeleteHeader(hdr_info); |
| if (file == (ImfOutputFile *) NULL) |
| { |
| ThrowFileException(&image->exception,BlobError,"UnableToOpenBlob", |
| ImfErrorMessage()); |
| write_info=DestroyImageInfo(write_info); |
| return(MagickFalse); |
| } |
| scanline=(ImfRgba *) AcquireQuantumMemory(image->columns,sizeof(*scanline)); |
| if (scanline == (ImfRgba *) NULL) |
| { |
| (void) ImfCloseOutputFile(file); |
| ThrowWriterException(ResourceLimitError,"MemoryAllocationFailed"); |
| } |
| for (y=0; y < (long) image->rows; y++) |
| { |
| p=GetVirtualPixels(image,0,y,image->columns,1,&image->exception); |
| if (p == (const PixelPacket *) NULL) |
| break; |
| for (x=0; x < (long) image->columns; x++) |
| { |
| ImfFloatToHalf(QuantumScale*p->red,&half_quantum); |
| scanline[x].r=half_quantum; |
| ImfFloatToHalf(QuantumScale*p->green,&half_quantum); |
| scanline[x].g=half_quantum; |
| ImfFloatToHalf(QuantumScale*p->blue,&half_quantum); |
| scanline[x].b=half_quantum; |
| if (image->matte == MagickFalse) |
| ImfFloatToHalf(1.0,&half_quantum); |
| else |
| ImfFloatToHalf(1.0-QuantumScale*p->opacity,&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 |