coders/webp.c

/*
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%                         Read/Write WebP Image Format                        %
%                                                                             %
%                              Software Design                                %
%                                John Cristy                                  %
%                                 March 2011                                  %
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%  Copyright 1999-2011 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.                                             %
%                                                                             %
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%
*/

/*
  Include declarations.
*/
#include "magick/studio.h"
#include "magick/blob.h"
#include "magick/blob-private.h"
#include "magick/client.h"
#include "magick/display.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/quantum-private.h"
#include "magick/static.h"
#include "magick/string_.h"
#include "magick/module.h"
#include "magick/utility.h"
#include "magick/xwindow.h"
#include "magick/xwindow-private.h"

/*
  Forward declarations.
*/
#if defined(MAGICKCORE_WEBP_DELEGATE)
static MagickBooleanType
  WriteWEBPImage(const ImageInfo *,Image *);
#endif

#if defined(MAGICKCORE_WEBP_DELEGATE)
/*
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%  ReadWEBPImage() reads an image in the WebP image format.
%
%  The format of the ReadWEBPImage method is:
%
%      Image *ReadWEBPImage(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 *ReadWEBPImage(const ImageInfo *image_info,
  ExceptionInfo *exception)
{
  return((Image *) NULL);
}
#endif

/*
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%   R e g i s t e r W E B P I m a g e                                         %
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%  RegisterWEBPImage() adds attributes for the WebP 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 RegisterWEBPImage method is:
%
%      size_t RegisterWEBPImage(void)
%
*/
ModuleExport size_t RegisterWEBPImage(void)
{
  MagickInfo
    *entry;

  entry=SetMagickInfo("X");
#if defined(MAGICKCORE_WEBP_DELEGATE)
  entry->decoder=(DecodeImageHandler *) ReadWEBPImage;
  entry->encoder=(EncodeImageHandler *) WriteWEBPImage;
#endif
  entry->format_type=ImplicitFormatType;
  entry->description=ConstantString("WebP Image Format");
  entry->module=ConstantString("WEBP");
  (void) RegisterMagickInfo(entry);
  return(MagickImageCoderSignature);
}

/*
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%   U n r e g i s t e r W E B P I m a g e                                     %
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%  UnregisterWEBPImage() removes format registrations made by the WebP module
%  from the list of supported formats.
%
%  The format of the UnregisterWEBPImage method is:
%
%      UnregisterWEBPImage(void)
%
*/
ModuleExport void UnregisterWEBPImage(void)
{
  (void) UnregisterMagickInfo("WEBP");
}
#if defined(MAGICKCORE_WEBP_DELEGATE)

/*
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%   W r i t e W E B P I m a g e                                               %
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%  WriteWEBPImage() writes an image in the WebP image format.
%
%  The format of the WriteWEBPImage method is:
%
%      MagickBooleanType WriteWEBPImage(const ImageInfo *image_info,
%        Image *image)
%
%  A description of each parameter follows.
%
%    o image_info: the image info.
%
%    o image:  The image.
%
*/
static MagickBooleanType WriteWEBPImage(const ImageInfo *image_info,
  Image *image)
{
  return(MagickFalse);
}
#endif