Linux系统的imagemagick 7.1.0，支持exr格式转换

/* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % M M GGGG K K % % MM MM G K K % % M M M G GG KKK % % M M G G K K % % M M GGG K K % % % % % % Read/Write MGK Image Format. % % % % Software Design % % John Cristy % % July 1992 % % % % % % 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 <MagickCore/studio.h> #include <MagickCore/blob.h> #include <MagickCore/cache.h> #include <MagickCore/colorspace.h> #include <MagickCore/exception.h> #include <MagickCore/image.h> #include <MagickCore/list.h> #include <MagickCore/magick.h> #include <MagickCore/memory_.h> #include <MagickCore/monitor.h> #include <MagickCore/pixel-accessor.h> #include <MagickCore/string_.h> #include <MagickCore/module.h>  /* Forward declarations. */ static MagickBooleanType WriteMGKImage(const ImageInfo *,Image *,ExceptionInfo *);  /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % I s M G K % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % IsMGK() returns MagickTrue if the image format type, identified by the % magick string, is MGK. % % The format of the IsMGK method is: % % MagickBooleanType IsMGK(const unsigned char *magick,const size_t length) % % A description of each parameter follows: % % o magick: This string is generally the first few bytes of an image file % or blob. % % o length: Specifies the length of the magick string. % */ static MagickBooleanType IsMGK(const unsigned char *magick,const size_t length) { if (length < 7) return(MagickFalse); if (LocaleNCompare((char *) magick,"id=mgk",7) == 0) return(MagickTrue); return(MagickFalse); }  /* %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % % % % % % R e a d M G K I m a g e % % % % % % % %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% % % ReadMGKImage() reads a MGK image file and returns it. It allocates the % memory necessary for the new Image structure and returns a pointer to the % new image. % % The format of the ReadMGKImage method is: % % Image *ReadMGKImage(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 *ReadMGKImage(const ImageInfo *image_info,ExceptionInfo *exception) { char buffer[MaxTextExtent]; Image *image; long y; MagickBooleanType status; register long x; register Quantum *q; register unsigned char *p; ssize_t count; unsigned char *pixels; unsigned long columns, rows; /* Open image file. */ 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); } /* Read MGK image. */ (void) ReadBlobString(image,buffer); /* read magic number */ if (IsMGK(buffer,7) == MagickFalse) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); (void) ReadBlobString(image,buffer); count=(ssize_t) sscanf(buffer,"%lu %lu\n",&columns,&rows); if (count <= 0) ThrowReaderException(CorruptImageError,"ImproperImageHeader"); do { /* Initialize image structure. */ image->columns=columns; image->rows=rows; image->depth=8; if ((image_info->ping != MagickFalse) && (image_info->number_scenes != 0)) if (image->scene >= (image_info->scene+image_info->number_scenes-1)) break; /* Convert MGK raster image to pixel packets. */ if (SetImageExtent(image,image->columns,image->rows,exception) == MagickFalse) return(DestroyImageList(image)); pixels=(unsigned char *) AcquireQuantumMemory((size_t) image->columns, 3UL*sizeof(*pixels)); if (pixels == (unsigned char *) NULL) ThrowReaderException(ResourceLimitError,"MemoryAllocationFailed"); for (y=0; y < (ssize_t) image->rows; y++) { count=(ssize_t) ReadBlob(image,(size_t) (3*image->columns),pixels); if (count != (ssize_t) (3*image->columns))