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diff --git a/compiler/tflchef/core/src/DataChef.h b/compiler/tflchef/core/src/DataChef.h
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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.
+ */
+
+#ifndef __DATA_CHEF_H__
+#define __DATA_CHEF_H__
+
+#include "Arguments.h"
+
+#include <cstdint>
+#include <memory>
+#include <vector>
+
+using Data = std::vector<uint8_t>;
+
+/**
+ * @brief Data Generator
+ */
+struct DataChef
+{
+  virtual ~DataChef() = default;
+
+  // TODO Allow users to query the type of elements that this DataChef generates
+
+  /**
+   * @brief Generate a sequence of 'count' elements as a byte sequence
+   *
+   * Let D be the return value of generate(N).
+   * Then, D.size() == N * sizeof(T) where T is the element type.
+   */
+  virtual Data generate(int32_t count) const = 0;
+};
+
+/**
+ * @brief Data Generator Factory
+ */
+struct DataChefFactory
+{
+  virtual ~DataChefFactory() = default;
+
+  virtual std::unique_ptr<DataChef> create(const Arguments &args) const = 0;
+};
+
+#endif // __DATA_CHEF_H__