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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 __NNFW_SUPPORT_TFLITE_NNAPI_SESSION_H__
#define __NNFW_SUPPORT_TFLITE_NNAPI_SESSION_H__
#include "Session.h"
#include "support/tflite/nnapi_delegate.h"
namespace nnfw
{
namespace support
{
namespace tflite
{
class NNAPISession final : public Session
{
public:
NNAPISession(::tflite::Interpreter *interp) : _interp{interp}
{
// Construct Graph from Interpreter
_delegate.BuildGraph(_interp);
}
public:
::tflite::Interpreter *interp(void) override { return _interp; }
public:
bool prepare(void) override
{
// Explicitly turn off T/F lite internal NNAPI delegation in order to use locally defined
// NNAPI delegation.
_interp->UseNNAPI(false);
if (kTfLiteOk != _interp->AllocateTensors())
{
return false;
}
return true;
}
bool run(void) override
{
return kTfLiteOk == _delegate.Invoke(_interp);
}
bool teardown(void) override
{
// DO NOTHING
return true;
}
private:
::tflite::Interpreter * const _interp;
nnfw::NNAPIDelegate _delegate;
};
} // namespace tflite
} // namespace support
} // namespace nnfw
#endif // __NNFW_SUPPORT_TFLITE_NNAPI_SESSION_H__
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