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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_ASH_DBUS_MACHINE_LEARNING_DECISION_SERVICE_PROVIDER_H_
#define CHROME_BROWSER_ASH_DBUS_MACHINE_LEARNING_DECISION_SERVICE_PROVIDER_H_
#include <memory>
#include <string>
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "chromeos/ash/components/dbus/services/cros_dbus_service.h"
#include "dbus/exported_object.h"
namespace dbus {
class MethodCall;
} // namespace dbus
namespace ash {
namespace power {
namespace ml {
class UserActivityController;
} // namespace ml
} // namespace power
// This class processes machine learning decision requests from Chrome OS side.
//
// ShouldDeferScreenDim:
// % dbus-send --system --type=method_call --print-reply
// --dest=org.chromium.MlDecisionService
// /org/chromium/MlDecisionService
// org.chromium.MlDecisionService.ShouldDeferScreenDim
// boolean: true or false
//
// % (True means smart dim decides to defer the imminent screen dimming.)
//
// Now it only exports ShouldDeferScreenDim for powerd. New machine learning
// related methods can be added when required.
class MachineLearningDecisionServiceProvider
: public CrosDBusService::ServiceProviderInterface {
public:
MachineLearningDecisionServiceProvider();
MachineLearningDecisionServiceProvider(
const MachineLearningDecisionServiceProvider&) = delete;
MachineLearningDecisionServiceProvider& operator=(
const MachineLearningDecisionServiceProvider&) = delete;
~MachineLearningDecisionServiceProvider() override;
// CrosDBusService::ServiceProviderInterface overrides:
void Start(scoped_refptr<dbus::ExportedObject> exported_object) override;
private:
// Called from ExportedObject when a handler is exported as a D-Bus
// method or failed to be exported.
void OnExported(const std::string& interface_name,
const std::string& method_name,
bool success);
// Called on UI thread in response to D-Bus requests.
void ShouldDeferScreenDim(
dbus::MethodCall* method_call,
dbus::ExportedObject::ResponseSender response_sender);
// Sends |defer_dimming| as the response to a ShouldDeferScreenDim method
// call.
void SendSmartDimDecision(
std::unique_ptr<dbus::Response> response,
dbus::ExportedObject::ResponseSender response_sender,
bool defer_dimming);
// The real provider of ShouldDeferScreenDim
std::unique_ptr<power::ml::UserActivityController> user_activity_controller_;
// Keep this last so that all weak pointers will be invalidated at the
// beginning of destruction.
base::WeakPtrFactory<MachineLearningDecisionServiceProvider>
weak_ptr_factory_{this};
};
} // namespace ash
#endif // CHROME_BROWSER_ASH_DBUS_MACHINE_LEARNING_DECISION_SERVICE_PROVIDER_H_
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