DataContainer.h

/*
SyneRBI Synergistic Image Reconstruction Framework (SIRF)
Copyright 2015 - 2019 Rutherford Appleton Laboratory STFC
 
This is software developed for the Collaborative Computational
Project in Synergistic Reconstruction for Biomedical Imaging (formerly CCP PETMR)
(http://www.ccpsynerbi.ac.uk/).
 
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
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 SIRF_ABSTRACT_DATA_CONTAINER_TYPE
#define SIRF_ABSTRACT_DATA_CONTAINER_TYPE
 
#include<complex>
#include <map>
#include "sirf/iUtilities/DataHandle.h"
 
namespace sirf {
 
    typedef std::map<std::string, int> Dimensions;
 
    class DataContainer {
    public:
        virtual ~DataContainer() {}
        //virtual DataContainer* new_data_container() const = 0;
        virtual ObjectHandle<DataContainer>* new_data_container_handle() const = 0;
        virtual unsigned int items() const = 0;
        virtual bool is_complex() const = 0;
        virtual int bits() const
        {
            // default value
            return is_complex() ? 16 * sizeof(float) : 8 * sizeof(float);
        }
 
        virtual float norm() const = 0;
 
 
        virtual void dot(const DataContainer& dc, void* ptr) const = 0;
 
        virtual void sum(void* ptr) const = 0;
 
        virtual void max(void* ptr) const = 0;
 
        virtual void multiply
            (const DataContainer& x, const DataContainer& y) = 0;
        virtual void multiply
            (const DataContainer& x, const void* ptr_y) = 0;
 
        virtual void add
            (const DataContainer& x, const void* ptr_y) = 0;
 
        virtual void divide
            (const DataContainer& x, const DataContainer& y) = 0;
 
        virtual void maximum
            (const DataContainer& x, const DataContainer& y) = 0;
        virtual void maximum
            (const DataContainer& x, const void* ptr_y) = 0;
 
        virtual void minimum
            (const DataContainer& x, const DataContainer& y) = 0;
        virtual void minimum
            (const DataContainer& x, const void* ptr_y) = 0;
 
        virtual void power
            (const DataContainer& x, const DataContainer& y) = 0;
        virtual void power
            (const DataContainer& x, const void* ptr_y) = 0;
 
        virtual void exp(const DataContainer& x) = 0;
        virtual void log(const DataContainer& x) = 0;
        virtual void sqrt(const DataContainer& x) = 0;
        virtual void sign(const DataContainer& x) = 0;
        virtual void abs(const DataContainer& x) = 0;
 
        virtual void axpby(
            const void* ptr_a, const DataContainer& x,
            const void* ptr_b, const DataContainer& y) = 0;
        virtual void xapyb(
            const DataContainer& x, const void* ptr_a,
            const DataContainer& y, const void* ptr_b) = 0;
 
        virtual void xapyb(
            const DataContainer& x, const DataContainer& a,
            const DataContainer& y, const DataContainer& b) = 0;
 
        virtual void xapyb(
            const DataContainer& a_x, const void* ptr_a,
            const DataContainer& a_y, const DataContainer& a_b) = 0;
 
        void xapyb(
            const DataContainer& a_x, const DataContainer& a_a,
            const DataContainer& a_y, const void* ptr_b)
        {
            xapyb(a_y, ptr_b, a_x, a_a);
        }
 
        virtual void write(const std::string &filename) const = 0;
 
        bool is_empty() const
        {
            return items() < 1;
        }
 
        std::unique_ptr<DataContainer> clone() const
        {
            return std::unique_ptr<DataContainer>(this->clone_impl());
        }
 
        void conjugate()
        {
            this->conjugate_impl();
        }
 
        std::unique_ptr<DataContainer> conjugate() const
        {
            DataContainer* ptr = this->clone_impl();
            ptr->conjugate();
            return std::unique_ptr<DataContainer>(ptr);
        }
 
        template<typename T>
        static T product(T x, T y)
        {
            return x * y;
        }
 
        template<typename T>
        static T ratio(T x, T y)
        {
            return x / y;
        }
 
        template<typename T>
        static T inverse_ratio(T x, T y)
        {
            return y / x;
        }
 
        template<typename T>
        static T sum(T x, T y)
        {
            return x + y;
        }
 
        template<typename T>
        static T maximum(T x, T y)
        {
            return std::max(x, y);
        }
        template<typename T>
        static T maxabs(T x, T y)
        {
            return std::max(std::abs(x), std::abs(y));
        }
        template<typename T>
        static T maxreal(T x, T y)
        {
            return std::real(x) > std::real(y) ? x : y;
        }
 
        template<typename T>
        static T minimum(T x, T y)
        {
            return std::min(x, y);
        }
        template<typename T>
        static T minabs(T x, T y)
        {
            return std::min(std::abs(x), std::abs(y));
        }
        template<typename T>
        static T minreal(T x, T y)
        {
            return std::real(x) < std::real(y) ? x : y;
        }
        static std::complex<float> power(std::complex<float> x, std::complex<float> y)
        {
            return std::pow(x, y);
        }
        static std::complex<float> exp(std::complex<float> x)
        {
            return std::exp(x);
        }
        static std::complex<float> log(std::complex<float> x)
        {
            return std::log(x);
        }
        static std::complex<float> sqrt(std::complex<float> x)
        {
            return std::sqrt(x);
        }
        template<typename T>
        static T sign(T x)
        {
            return (std::real(x) > 0) - (std::real(x) < 0);
        }
        template<typename T>
        static T abs(T x)
        {
            return T(std::abs(x));
        }
 
    protected:
        virtual DataContainer* clone_impl() const = 0;
        virtual void conjugate_impl()
        {
            if (is_complex())
                THROW("complex data containes must override conjugate_impl()");
        }
    };
}
 
#endif