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Diffstat (limited to 'runtimes/libs/tflite/include/tflite/NNAPISession.h')
-rw-r--r-- | runtimes/libs/tflite/include/tflite/NNAPISession.h | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/runtimes/libs/tflite/include/tflite/NNAPISession.h b/runtimes/libs/tflite/include/tflite/NNAPISession.h new file mode 100644 index 000000000..b2a999d10 --- /dev/null +++ b/runtimes/libs/tflite/include/tflite/NNAPISession.h @@ -0,0 +1,101 @@ +/* + * 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 NNAPISession.h + * @brief This file contains NNAPISession class + * @ingroup COM_AI_RUNTIME + */ + +#ifndef __NNFW_TFLITE_NNAPI_SESSION_H__ +#define __NNFW_TFLITE_NNAPI_SESSION_H__ + +#include "Session.h" +#include "tflite/ext/nnapi_delegate.h" + +namespace nnfw +{ +namespace tflite +{ + +/** + * @brief Class to define NNAPI interpreter session which is inherited from Session class + */ +class NNAPISession final : public Session +{ +public: + /** + * @brief Construct a NNAPISession object with interpreter of TfLite + * @param[in] interp The TfLite interpreter pointer + * @note Invoke BuildGraph() of NNAPI delegate from Interpreter + */ + NNAPISession(::tflite::Interpreter *interp) : _interp{interp} + { + // Construct Graph from Interpreter + _delegate.BuildGraph(_interp); + } + +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 + { + // 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; + } + + /** + * @brief Run the Invoke function of NNAPI delegate + * @return @c true if Invoke() is successful, otherwise @c false + */ + bool run(void) override { return kTfLiteOk == _delegate.Invoke(_interp); } + + /** + * @brief Tear down TfLite interpreter session + * @return @c true always + */ + bool teardown(void) override + { + // DO NOTHING + return true; + } + +private: + ::tflite::Interpreter *const _interp; + nnfw::tflite::NNAPIDelegate _delegate; +}; + +} // namespace tflite +} // namespace nnfw + +#endif // __NNFW_TFLITE_NNAPI_SESSION_H__ |