53 lines
2.1 KiB
C++
53 lines
2.1 KiB
C++
/* Copyright 2020 The TensorFlow Authors. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==============================================================================*/
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#ifndef TENSORFLOW_LITE_DELEGATES_INTERPRETER_UTILS_H_
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#define TENSORFLOW_LITE_DELEGATES_INTERPRETER_UTILS_H_
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#include "tensorflow/lite/interpreter.h"
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// Utility functions and classes for using delegates.
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namespace tflite {
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namespace delegates {
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#if !TFLITE_EXPERIMENTAL_RUNTIME_EAGER
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class InterpreterUtils {
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public:
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/// Invokes an interpreter with automatic fallback from delegation to CPU.
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///
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/// If using the delegate fails, the delegate is automatically undone and an
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/// attempt made to return the interpreter to an invokable state.
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///
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/// Allowing the fallback is suitable only if both of the following hold:
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/// - The caller is known not to cache pointers to tensor data across Invoke()
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/// calls.
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/// - The model is not stateful (no variables, no LSTMs) or the state isn't
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/// needed between batches.
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///
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/// Returns one of the following three status codes:
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/// 1. kTfLiteOk: Success. Output is valid.
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/// 2. kTfLiteDelegateError: Delegate error but fallback succeeded. Output is
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/// valid.
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/// NOTE: This undoes all delegates previously applied to the Interpreter.
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/// 3. kTfLiteError: Unexpected/runtime failure. Output is invalid.
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/// WARNING: This is an experimental API and subject to change.
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static TfLiteStatus InvokeWithCPUFallback(Interpreter* interpreter);
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};
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#endif // !TFLITE_EXPERIMENTAL_RUNTIME_EAGER
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} // namespace delegates
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} // namespace tflite
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#endif // TENSORFLOW_LITE_DELEGATES_INTERPRETER_UTILS_H_
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