fetch_store.h

/*
 * Copyright (c) 2008-2016 the MRtrix3 contributors
 * 
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/
 * 
 * MRtrix is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * 
 * For more details, see www.mrtrix.org
 * 
 */

#ifndef __image_io_fetch_store_h__
#define __image_io_fetch_store_h__

#include "raw.h"
#include "datatype.h"

namespace MR
{


  template <typename ValueType>
    typename std::enable_if<!is_data_type<ValueType>::value, void>::type __set_fetch_store_functions (
        std::function<ValueType(const void*,size_t,default_type,default_type)>& /*fetch_func*/,
        std::function<void(ValueType,void*,size_t,default_type,default_type)>& /*store_func*/, 
        DataType /*datatype*/) { }



  template <typename ValueType>
    typename std::enable_if<is_data_type<ValueType>::value, void>::type __set_fetch_store_functions (
        std::function<ValueType(const void*,size_t,default_type,default_type)>& fetch_func,
        std::function<void(ValueType,void*,size_t,default_type,default_type)>& store_func, 
        DataType datatype);


  // define fetch/store methods for all types using C++11 extern templates, 
  // to avoid massive recompile times...
#define __DEFINE_FETCH_STORE_FUNCTION_FOR_TYPE(ValueType) \
  MRTRIX_EXTERN template void __set_fetch_store_functions<ValueType> ( \
      std::function<ValueType(const void*,size_t,default_type,default_type)>& fetch_func, \
        std::function<void(ValueType,void*,size_t,default_type,default_type)>& store_func, \
        DataType datatype) 

#define __DEFINE_FETCH_STORE_FUNCTIONS \
  __DEFINE_FETCH_STORE_FUNCTION_FOR_TYPE(bool); \
  __DEFINE_FETCH_STORE_FUNCTION_FOR_TYPE(uint8_t); \
  __DEFINE_FETCH_STORE_FUNCTION_FOR_TYPE(int8_t); \
  __DEFINE_FETCH_STORE_FUNCTION_FOR_TYPE(uint16_t); \
  __DEFINE_FETCH_STORE_FUNCTION_FOR_TYPE(int16_t); \
  __DEFINE_FETCH_STORE_FUNCTION_FOR_TYPE(uint32_t); \
  __DEFINE_FETCH_STORE_FUNCTION_FOR_TYPE(int32_t); \
  __DEFINE_FETCH_STORE_FUNCTION_FOR_TYPE(uint64_t); \
  __DEFINE_FETCH_STORE_FUNCTION_FOR_TYPE(int64_t); \
  __DEFINE_FETCH_STORE_FUNCTION_FOR_TYPE(float); \
  __DEFINE_FETCH_STORE_FUNCTION_FOR_TYPE(double); \
  __DEFINE_FETCH_STORE_FUNCTION_FOR_TYPE(cfloat); \
  __DEFINE_FETCH_STORE_FUNCTION_FOR_TYPE(cdouble)


#define MRTRIX_EXTERN extern
  __DEFINE_FETCH_STORE_FUNCTIONS;

}

#endif