From cf67e65475c61c639ed506db91bd4d5340d88102 Mon Sep 17 00:00:00 2001 From: cristy Date: Tue, 3 Apr 2012 18:03:01 +0000 Subject: [PATCH] --- coders/fd.c | 186 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 186 insertions(+) create mode 100644 coders/fd.c diff --git a/coders/fd.c b/coders/fd.c new file mode 100644 index 000000000..85321d04f --- /dev/null +++ b/coders/fd.c @@ -0,0 +1,186 @@ +/* +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% % +% % +% % +% FFFFF DDDD % +% F D D % +% FFF D D % +% F D D % +% F DDDD % +% % +% % +% Retrieve An Image Via a File Descriptor. % +% % +% Software Design % +% John Cristy % +% Bill Radcliffe % +% March 2000 % +% % +% % +% Copyright 1999-2012 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 "MagickCore/studio.h" +#include "MagickCore/blob.h" +#include "MagickCore/blob-private.h" +#include "MagickCore/constitute.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/module.h" +#include "MagickCore/quantum-private.h" +#include "MagickCore/static.h" +#include "MagickCore/resource_.h" +#include "MagickCore/string_.h" +#include "MagickCore/string-private.h" +#include "MagickCore/utility.h" + +/* +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% % +% % +% % +% R e a d F D I m a g e % +% % +% % +% % +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% ReadFDImage retrieves an image via a file descriptor, decodes the image, +% 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 ReadFDImage method is: +% +% Image *ReadFDImage(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 *ReadFDImage(const ImageInfo *image_info,ExceptionInfo *exception) +{ + Image + *image; + + ImageInfo + *read_info; + + /* + Open image file. + */ + 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); + read_info=CloneImageInfo(image_info); + read_info->file=fdopen(StringToLong(image_info->filename),"rb"); + if (read_info->file == (FILE *) NULL) + { + ThrowFileException(exception,BlobError,"UnableToOpenBlob", + image_info->filename); + return((Image *) NULL); + } + *read_info->magick='\0'; + image=ReadImage(read_info,exception); + (void) fclose(read_info->file); + read_info=DestroyImageInfo(read_info); + if (image == (Image *) NULL) + { + (void) ThrowMagickException(exception,GetMagickModule(),CoderError, + "NoDataReturned","`%s'",image_info->filename); + return((Image *) NULL); + } + return(GetFirstImageInList(image)); +} + +/* +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% % +% % +% % +% R e g i s t e r F D I m a g e % +% % +% % +% % +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% RegisterFDImage() adds attributes for the FD image format to +% the list of supported formats. The attributes 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 RegisterFDImage method is: +% +% size_t RegisterFDImage(void) +% +*/ +ModuleExport size_t RegisterFDImage(void) +{ + MagickInfo + *entry; + + entry=SetMagickInfo("FD"); + entry->decoder=(DecodeImageHandler *) ReadFDImage; + entry->description=ConstantString("Read image from a file descriptor"); + entry->module=ConstantString("FD"); +// entry->stealth=MagickTrue; + (void) RegisterMagickInfo(entry); + return(MagickImageCoderSignature); +} + +/* +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% % +% % +% % +% U n r e g i s t e r F D I m a g e % +% % +% % +% % +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +% +% UnregisterFDImage() removes format registrations made by the FD module from +% the list of supported formats. +% +% The format of the UnregisterFDImage method is: +% +% UnregisterFDImage(void) +% +*/ +ModuleExport void UnregisterFDImage(void) +{ + (void) UnregisterMagickInfo("FD"); +} -- 2.40.0