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/*=========================================================================
*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* 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.
*
*=========================================================================*/
#ifndef sitkHashImageFilter_h
#define sitkHashImageFilter_h
#include "sitkMacro.h"
#include "sitkMemberFunctionFactory.h"
#include "sitkImage.h"
#include "sitkBasicFilters.h"
#include "sitkImageFilter.h"
#include "sitkProcessObject.h"
namespace itk {
namespace simple {
/** \class HashImageFilter
* \brief Compute the sha1 or md5 hash of an image
*
* \sa itk::simple::Hash for the procedural interface
*/
class SITKBasicFilters_EXPORT HashImageFilter
: public ProcessObject {
public:
typedef HashImageFilter Self;
// function pointer type
typedef std::string (Self::*MemberFunctionType)( const Image& );
// this filter works with all itk::Image and itk::VectorImage types.
typedef typelist::Append<
typelist::Append< BasicPixelIDTypeList, ComplexPixelIDTypeList>::Type,
VectorPixelIDTypeList >::Type PixelIDTypeList;
HashImageFilter();
enum HashFunction { SHA1, MD5 };
SITK_RETURN_SELF_TYPE_HEADER SetHashFunction ( HashFunction hashFunction );
HashFunction GetHashFunction () const;
/** Name of this class */
std::string GetName() const { return std::string ( "Hash"); }
// Print ourselves out
std::string ToString() const;
std::string Execute ( const Image& );
private:
HashFunction m_HashFunction;
template <class TImageType> std::string ExecuteInternal ( const Image& image );
template <class TImageType> std::string ExecuteInternalLabelImage ( const Image& image );
// friend to get access to executeInternal member
friend struct detail::MemberFunctionAddressor<MemberFunctionType>;
friend struct detail::ExecuteInternalLabelImageAddressor<MemberFunctionType>;
nsstd::auto_ptr<detail::MemberFunctionFactory<MemberFunctionType> > m_MemberFactory;
};
SITKBasicFilters_EXPORT std::string Hash ( const Image& image, HashImageFilter::HashFunction function = HashImageFilter::SHA1 );
}
}
#endif
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