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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 InterpreterSession.h
* @brief This file contains InterpreterSession class
* @ingroup COM_AI_RUNTIME
*/
#ifndef __NNFW_TFLITE_INTERPRETER_SESSION_H__
#define __NNFW_TFLITE_INTERPRETER_SESSION_H__
#include "Session.h"
namespace nnfw
{
namespace tflite
{
/**
* @brief Class to define TfLite interpreter session which is inherited from Session class
*/
class InterpreterSession final : public Session
{
public:
/**
* @brief Construct a InterpreterSession object with interpreter of TfLite
* @param[in] interp The TfLite interpreter pointer
*/
InterpreterSession(::tflite::Interpreter *interp) : _interp{interp}
{
// DO NOTHING
}
public:
/**
* @brief Get TfLite interpreter pointer
* @return The TfLite interpreter
*/
::tflite::Interpreter *interp(void) override { return _interp; }
public:
/**
* @brief Prepare the TfLite interpreter session
* @return @c true if tensor preparation is successful, otherwise @c false
*/
bool prepare(void) override
{
_interp->UseNNAPI(false);
if (kTfLiteOk != _interp->AllocateTensors())
{
return false;
}
return true;
}
/**
* @brief Run the Invoke function of TfLite interpreter
* @return @c true if Invoke() is successful, otherwise @c false
*/
bool run(void) override
{
// Return true if Invoke returns kTfLiteOk
return kTfLiteOk == _interp->Invoke();
}
/**
* @brief Tear down TfLite interpreter session
* @return @c true always
*/
bool teardown(void) override
{
// Do NOTHING currently
return true;
}
private:
::tflite::Interpreter *const _interp;
};
} // namespace tflite
} // namespace nnfw
#endif // __NNFW_TFLITE_INTERPRETER_SESSION_H__
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