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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_OPTIMIZATION_GUIDE_CORE_INFERENCE_MODEL_VALIDATOR_H_
#define COMPONENTS_OPTIMIZATION_GUIDE_CORE_INFERENCE_MODEL_VALIDATOR_H_
#include "base/task/sequenced_task_runner.h"
#include "components/optimization_guide/core/delivery/optimization_guide_model_provider.h"
#include "components/optimization_guide/core/inference/base_model_executor.h"
#include "components/optimization_guide/core/inference/model_executor.h"
#include "components/optimization_guide/core/inference/model_handler.h"
#include "components/optimization_guide/proto/models.pb.h"
namespace optimization_guide {
// Handler for loading and validating a model.
class ModelValidatorHandler
: public ModelHandler<float, const std::vector<float>&> {
public:
ModelValidatorHandler(
OptimizationGuideModelProvider* model_provider,
scoped_refptr<base::SequencedTaskRunner> background_task_runner);
~ModelValidatorHandler() override;
// Disallow copy/assign.
ModelValidatorHandler(const ModelValidatorHandler&) = delete;
ModelValidatorHandler& operator=(const ModelValidatorHandler&) = delete;
private:
// ModelValidatorHandler:
void OnModelUpdated(
optimization_guide::proto::OptimizationTarget optimization_target,
base::optional_ref<const ModelInfo> model_info) override;
// Invoked when the model has finished executing.
void OnModelExecutionComplete(const std::optional<float>& output);
base::WeakPtrFactory<ModelValidatorHandler> weak_ptr_factory_{this};
};
// Executor where the model loading and validation happens in the background
// thread. This is owned by ModelValidatorHandler.
class ModelValidatorExecutor
: public BaseModelExecutor<float, const std::vector<float>&> {
public:
ModelValidatorExecutor();
~ModelValidatorExecutor() override;
// Disallow copy/assign.
ModelValidatorExecutor(const ModelValidatorExecutor&) = delete;
ModelValidatorExecutor& operator=(const ModelValidatorExecutor&) = delete;
protected:
// BaseModelExecutor:
bool Preprocess(const std::vector<TfLiteTensor*>& input_tensors,
const std::vector<float>& input) override;
std::optional<float> Postprocess(
const std::vector<const TfLiteTensor*>& output_tensors) override;
};
} // namespace optimization_guide
#endif // COMPONENTS_OPTIMIZATION_GUIDE_CORE_INFERENCE_MODEL_VALIDATOR_H_
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