| // Copyright 2018 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <memory> |
| #include <utility> |
| |
| #include <base/bind.h> |
| #include <base/check.h> |
| #include <dbus/exported_object.h> |
| #include <dbus/message.h> |
| |
| #include "power_manager/powerd/policy/backlight_controller.h" |
| |
| #include "power_manager/powerd/system/dbus_wrapper.h" |
| |
| namespace power_manager { |
| namespace policy { |
| |
| namespace { |
| |
| void OnIncreaseBrightness( |
| const BacklightController::IncreaseBrightnessCallback& callback, |
| dbus::MethodCall* method_call, |
| dbus::ExportedObject::ResponseSender response_sender) { |
| callback.Run(); |
| std::move(response_sender).Run(dbus::Response::FromMethodCall(method_call)); |
| } |
| |
| void OnDecreaseBrightness( |
| const BacklightController::DecreaseBrightnessCallback& callback, |
| dbus::MethodCall* method_call, |
| dbus::ExportedObject::ResponseSender response_sender) { |
| bool allow_off = true; |
| if (!dbus::MessageReader(method_call).PopBool(&allow_off)) |
| allow_off = true; |
| |
| callback.Run(allow_off); |
| std::move(response_sender).Run(dbus::Response::FromMethodCall(method_call)); |
| } |
| |
| void OnSetBrightness(const std::string& method_name, |
| const BacklightController::SetBrightnessCallback& callback, |
| dbus::MethodCall* method_call, |
| dbus::ExportedObject::ResponseSender response_sender) { |
| dbus::MessageReader reader(method_call); |
| SetBacklightBrightnessRequest request; |
| if (!reader.PopArrayOfBytesAsProto(&request)) { |
| LOG(ERROR) << "Invalid " << method_name << " args"; |
| std::move(response_sender) |
| .Run(dbus::ErrorResponse::FromMethodCall( |
| method_call, DBUS_ERROR_INVALID_ARGS, |
| "Expected SetBacklightBrightnessRequest protobuf")); |
| return; |
| } |
| |
| using Transition = policy::BacklightController::Transition; |
| Transition transition = Transition::FAST; |
| switch (request.transition()) { |
| case SetBacklightBrightnessRequest_Transition_INSTANT: |
| transition = Transition::INSTANT; |
| break; |
| case SetBacklightBrightnessRequest_Transition_FAST: |
| transition = Transition::FAST; |
| break; |
| case SetBacklightBrightnessRequest_Transition_SLOW: |
| transition = Transition::SLOW; |
| break; |
| } |
| |
| callback.Run(request.percent(), transition, request.cause()); |
| std::move(response_sender).Run(dbus::Response::FromMethodCall(method_call)); |
| } |
| |
| void OnGetBrightness(const std::string& method_name, |
| const BacklightController::GetBrightnessCallback& callback, |
| dbus::MethodCall* method_call, |
| dbus::ExportedObject::ResponseSender response_sender) { |
| double percent = 0.0; |
| bool success = false; |
| callback.Run(&percent, &success); |
| if (!success) { |
| std::move(response_sender) |
| .Run(dbus::ErrorResponse::FromMethodCall(method_call, DBUS_ERROR_FAILED, |
| "Couldn't fetch brightness")); |
| return; |
| } |
| |
| std::unique_ptr<dbus::Response> response = |
| dbus::Response::FromMethodCall(method_call); |
| dbus::MessageWriter(response.get()).AppendDouble(percent); |
| std::move(response_sender).Run(std::move(response)); |
| } |
| |
| } // namespace |
| |
| // static |
| void BacklightController::RegisterIncreaseBrightnessHandler( |
| system::DBusWrapperInterface* dbus_wrapper, |
| const std::string& method_name, |
| const IncreaseBrightnessCallback& callback) { |
| DCHECK(dbus_wrapper); |
| dbus_wrapper->ExportMethod(method_name, |
| base::Bind(&OnIncreaseBrightness, callback)); |
| } |
| |
| // static |
| void BacklightController::RegisterDecreaseBrightnessHandler( |
| system::DBusWrapperInterface* dbus_wrapper, |
| const std::string& method_name, |
| const DecreaseBrightnessCallback& callback) { |
| DCHECK(dbus_wrapper); |
| dbus_wrapper->ExportMethod(method_name, |
| base::Bind(&OnDecreaseBrightness, callback)); |
| } |
| |
| // static |
| void BacklightController::RegisterSetBrightnessHandler( |
| system::DBusWrapperInterface* dbus_wrapper, |
| const std::string& method_name, |
| const SetBrightnessCallback& callback) { |
| DCHECK(dbus_wrapper); |
| dbus_wrapper->ExportMethod( |
| method_name, base::Bind(&OnSetBrightness, method_name, callback)); |
| } |
| |
| // static |
| void BacklightController::RegisterGetBrightnessHandler( |
| system::DBusWrapperInterface* dbus_wrapper, |
| const std::string& method_name, |
| const GetBrightnessCallback& callback) { |
| DCHECK(dbus_wrapper); |
| dbus_wrapper->ExportMethod( |
| method_name, base::Bind(&OnGetBrightness, method_name, callback)); |
| } |
| |
| // static |
| void BacklightController::EmitBrightnessChangedSignal( |
| system::DBusWrapperInterface* dbus_wrapper, |
| const std::string& signal_name, |
| double brightness_percent, |
| BacklightBrightnessChange_Cause cause) { |
| DCHECK(dbus_wrapper); |
| dbus::Signal signal(kPowerManagerInterface, signal_name); |
| BacklightBrightnessChange proto; |
| proto.set_percent(brightness_percent); |
| proto.set_cause(cause); |
| dbus::MessageWriter(&signal).AppendProtoAsArrayOfBytes(proto); |
| dbus_wrapper->EmitSignal(&signal); |
| } |
| |
| } // namespace policy |
| } // namespace power_manager |