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+/*
+ * Copyright (c) 2018 Samsung Electronics Co., Ltd. All Rights Reserved
+ *
+ * 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.
+ */
+
+/**
+ * @file TensorView.h
+ * @brief This file contains TensorView class
+ * @ingroup COM_AI_RUNTIME
+ */
+
+#ifndef __NNFW_TFLITE_TENSOR_VIEW_H__
+#define __NNFW_TFLITE_TENSOR_VIEW_H__
+
+#include "tensorflow/lite/interpreter.h"
+
+#include "misc/tensor/Shape.h"
+#include "misc/tensor/Index.h"
+#include "misc/tensor/Reader.h"
+#include "misc/tensor/NonIncreasingStride.h"
+
+namespace nnfw
+{
+namespace tflite
+{
+
+/**
+ * @brief Class to define TensorView which is inherited from nnfw::misc::tensor::Reader<T> class
+ */
+template <typename T> class TensorView final : public nnfw::misc::tensor::Reader<T>
+{
+public:
+ /**
+ * @brief Construct a TensorView object with base and shape informations
+ * @param[in] shape The shape of a tensor
+ * @param[in] base The base address of a tensor
+ */
+ TensorView(const nnfw::misc::tensor::Shape &shape, T *base) : _shape{shape}, _base{base}
+ {
+ // Set 'stride'
+ _stride.init(_shape);
+ }
+
+public:
+ /**
+ * @brief Get shape of tensor
+ * @return Reference of shape
+ */
+ const nnfw::misc::tensor::Shape &shape(void) const { return _shape; }
+
+public:
+ /**
+ * @brief Get value of tensor index
+ * @param[in] index The tensor index
+ * @return The value at the index
+ */
+ T at(const nnfw::misc::tensor::Index &index) const override
+ {
+ const auto offset = _stride.offset(index);
+ return *(_base + offset);
+ }
+
+public:
+ /**
+ * @brief Get reference value of tensor index
+ * @param[in] index The tensor index
+ * @return The reference value at the index
+ */
+ T &at(const nnfw::misc::tensor::Index &index)
+ {
+ const auto offset = _stride.offset(index);
+ return *(_base + offset);
+ }
+
+private:
+ nnfw::misc::tensor::Shape _shape; /**< The tensor shape */
+
+public:
+ T *_base; /**< The base address of tensor */
+ nnfw::misc::tensor::NonIncreasingStride _stride; /**< The NonIncreasingStride object */
+
+public:
+ // TODO Introduce Operand ID class
+ /**
+ * @brief Create TensorView object using given parameters
+ * @param[in] interp The TfLite interpreter
+ * @param[in] tensor_index The tensor index
+ * @return The new TensorView<T> object
+ */
+ static TensorView<T> make(::tflite::Interpreter &interp, int tensor_index)
+ {
+ auto tensor_ptr = interp.tensor(tensor_index);
+
+ // Set 'shape'
+ nnfw::misc::tensor::Shape shape(tensor_ptr->dims->size);
+
+ for (uint32_t axis = 0; axis < shape.rank(); ++axis)
+ {
+ shape.dim(axis) = tensor_ptr->dims->data[axis];
+ }
+
+ return TensorView<T>(shape, interp.typed_tensor<T>(tensor_index));
+ }
+};
+
+} // namespace tflite
+} // namespace nnfw
+
+#endif // __NNFW_TFLITE_TENSOR_VIEW_H__