110 lines
3.7 KiB
C++
110 lines
3.7 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_TOOLS_DELEGATES_DELEGATE_PROVIDER_H_
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#define TENSORFLOW_LITE_TOOLS_DELEGATES_DELEGATE_PROVIDER_H_
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#include <string>
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#include <vector>
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#include "tensorflow/lite/c/common.h"
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#include "tensorflow/lite/tools/command_line_flags.h"
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#include "tensorflow/lite/tools/logging.h"
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#include "tensorflow/lite/tools/tool_params.h"
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namespace tflite {
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namespace tools {
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// Same w/ Interpreter::TfLiteDelegatePtr to avoid pulling
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// tensorflow/lite/interpreter.h dependency
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using TfLiteDelegatePtr =
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std::unique_ptr<TfLiteDelegate, void (*)(TfLiteDelegate*)>;
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class DelegateProvider {
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public:
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virtual ~DelegateProvider() {}
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// Create a list of command-line parsable flags based on tool params inside
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// 'params' whose value will be set to the corresponding runtime flag value.
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virtual std::vector<Flag> CreateFlags(ToolParams* params) const = 0;
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// Log tool params. If 'verbose' is set to false, the param is going to be
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// only logged if its value has been set, say via being parsed from
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// commandline flags.
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virtual void LogParams(const ToolParams& params, bool verbose) const = 0;
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// Create a TfLiteDelegate based on tool params.
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virtual TfLiteDelegatePtr CreateTfLiteDelegate(
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const ToolParams& params) const = 0;
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virtual std::string GetName() const = 0;
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const ToolParams& DefaultParams() const { return default_params_; }
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protected:
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template <typename T>
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Flag CreateFlag(const char* name, ToolParams* params,
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const std::string& usage) const {
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return Flag(
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name, [params, name](const T& val) { params->Set<T>(name, val); },
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default_params_.Get<T>(name), usage, Flag::kOptional);
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}
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ToolParams default_params_;
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};
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using DelegateProviderPtr = std::unique_ptr<DelegateProvider>;
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using DelegateProviderList = std::vector<DelegateProviderPtr>;
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class DelegateProviderRegistrar {
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public:
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template <typename T>
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struct Register {
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Register() {
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auto* const instance = DelegateProviderRegistrar::GetSingleton();
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instance->providers_.emplace_back(DelegateProviderPtr(new T()));
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}
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};
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static const DelegateProviderList& GetProviders() {
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return GetSingleton()->providers_;
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}
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private:
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DelegateProviderRegistrar() {}
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DelegateProviderRegistrar(const DelegateProviderRegistrar&) = delete;
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DelegateProviderRegistrar& operator=(const DelegateProviderRegistrar&) =
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delete;
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static DelegateProviderRegistrar* GetSingleton() {
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static auto* instance = new DelegateProviderRegistrar();
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return instance;
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}
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DelegateProviderList providers_;
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};
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#define REGISTER_DELEGATE_PROVIDER_VNAME(T) gDelegateProvider_##T##_
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#define REGISTER_DELEGATE_PROVIDER(T) \
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static DelegateProviderRegistrar::Register<T> \
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REGISTER_DELEGATE_PROVIDER_VNAME(T);
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// A global helper function to get all registered delegate providers.
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inline const DelegateProviderList& GetRegisteredDelegateProviders() {
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return DelegateProviderRegistrar::GetProviders();
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}
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} // namespace tools
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} // namespace tflite
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#endif // TENSORFLOW_LITE_TOOLS_DELEGATES_DELEGATE_PROVIDER_H_
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