ie_data.h

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// Copyright (C) 2018-2020 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
//
 
/**
 * @brief This header file defines the main Data representation node.
 *
 * @file ie_data.h
 */
#pragma once
 
#include <map>
#include <memory>
#include <string>
#include <vector>
 
#include "ie_common.h"
#include "ie_layouts.h"
#include "ie_precision.hpp"
 
namespace InferenceEngine {
/**
 * @brief This class represents the main Data representation node.
 *
 * The NN graphs are di-graphs consisting of data nodes and layer nodes.
 */
 
class INFERENCE_ENGINE_API_CLASS(Data) {
    class Impl;
public:
    /**
     * @brief An empty constructor (dimensionless)
     *
     * @param name Name of the data node
     * @param _precision Precision of the data
     * @param layout Data layout
     */
    Data(const std::string& name, Precision _precision, Layout layout = NCHW);
 
    /**
     * @brief A constructor with tensor descriptor
     *
     * @param name Name of the data node
     * @param desc Tensor descriptor
     */
    Data(const std::string& name, const TensorDesc& desc);
 
    /**
     * @brief A copy constructor
     *
     * @param data A data object to copy from
     */
    Data(const Data& data);
 
    /**
     * @brief An assignment operator
     *
     * @param data A data object to copy from
     * @return An assigned object
     */
    Data & operator = (const Data& data);
 
    /**
     * @brief Checks if the current node is resolved
     *
     * @return true if resolved, false otherwise.
     */
    bool isInitialized() const;
 
    /**
     * @brief Sets the data dimensions.
     *
     * After the current node is marked as resolved.
     *
     * @param a_dims Tensor dimensions to set
     */
    void setDims(const SizeVector& a_dims);
 
    /**
     * @brief Sets the layout value for this Data instance
     *
     * @param layout Layout value to set
     */
    void setLayout(Layout layout);
 
    /**
     * @brief changes dims and layout at same time
     *
     * @param dims new dimensions
     * @param layout new layout
     */
    void reshape(const SizeVector& dims, Layout layout);
 
    /**
     * @brief Gets the layout value for this Data instance
     */
    Layout getLayout() const;
 
    /**
     * @brief Gets Tensor descriptor reference
     *
     * @return reference to TensorDesc
     */
    const TensorDesc& getTensorDesc() const;
 
    /**
     * @brief Gets a precision type of this Data instance
     *
     * @return Precision type
     */
    const Precision& getPrecision() const;
 
    /**
     * @brief Sets a precision type of this Data instance
     *
     * @param precision Precision of the data
     */
    void setPrecision(const Precision& precision);
 
    /**
     * @return data dimensions
     */
    const SizeVector& getDims() const;
 
    /**
     * @return name of the data object
     */
    const std::string& getName() const;
 
    /**
     * @brief Sets a name the Data object
     *
     * @param newName Name of the data node
     */
 
    void setName(const std::string& newName);
 
    /**
     * @return convenient arbitrary user data holder
     */
    const UserValue& getUserObject() const;
 
    /**
     * @private
     * @brief Don't touch this field. An implementation details for Data object.
     */
    std::shared_ptr<Impl> _impl;
 
private:
    /**
     * @brief A unique name that identifies this data node
     */
    std::string name;
 
    /**
     * @brief A user utility place holder
     */
    UserValue userObject;
 
    /**
     * @brief A tensor descriptor
     */
    mutable TensorDesc tensorDesc;
};
}  // namespace InferenceEngine