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// Copyright 2016 The Chromium 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 "services/device/generic_sensor/platform_sensor_win.h"
#include "base/bind.h"
#include "base/single_thread_task_runner.h"
namespace device {
namespace {
constexpr double kDefaultSensorReportingFrequency = 5.0;
} // namespace
PlatformSensorWin::PlatformSensorWin(
mojom::SensorType type,
SensorReadingSharedBuffer* reading_buffer,
PlatformSensorProvider* provider,
scoped_refptr<base::SingleThreadTaskRunner> sensor_thread_runner,
std::unique_ptr<PlatformSensorReaderWinBase> sensor_reader)
: PlatformSensor(type, reading_buffer, provider),
sensor_thread_runner_(sensor_thread_runner),
sensor_reader_(sensor_reader.release()) {
DCHECK(sensor_reader_);
sensor_reader_->SetClient(this);
}
PlatformSensorConfiguration PlatformSensorWin::GetDefaultConfiguration() {
return PlatformSensorConfiguration(kDefaultSensorReportingFrequency);
}
mojom::ReportingMode PlatformSensorWin::GetReportingMode() {
// All Windows sensors, even with high accuracy / sensitivity will not report
// reading updates continuously. Therefore, return ON_CHANGE by default.
return mojom::ReportingMode::ON_CHANGE;
}
double PlatformSensorWin::GetMaximumSupportedFrequency() {
base::TimeDelta minimal_reporting_interval_ms =
sensor_reader_->GetMinimalReportingInterval();
if (minimal_reporting_interval_ms.is_zero())
return kDefaultSensorReportingFrequency;
return 1.0 / minimal_reporting_interval_ms.InSecondsF();
}
void PlatformSensorWin::OnReadingUpdated(const SensorReading& reading) {
UpdateSharedBufferAndNotifyClients(reading);
}
void PlatformSensorWin::OnSensorError() {
PostTaskToMainSequence(FROM_HERE,
base::BindOnce(&PlatformSensorWin::NotifySensorError,
weak_factory_.GetWeakPtr()));
}
bool PlatformSensorWin::StartSensor(
const PlatformSensorConfiguration& configuration) {
DCHECK(main_task_runner()->RunsTasksInCurrentSequence());
return sensor_reader_->StartSensor(configuration);
}
void PlatformSensorWin::StopSensor() {
DCHECK(main_task_runner()->RunsTasksInCurrentSequence());
sensor_reader_->StopSensor();
}
bool PlatformSensorWin::CheckSensorConfiguration(
const PlatformSensorConfiguration& configuration) {
DCHECK(main_task_runner()->RunsTasksInCurrentSequence());
base::TimeDelta minimal_reporting_interval_ms =
sensor_reader_->GetMinimalReportingInterval();
if (minimal_reporting_interval_ms.is_zero())
return true;
double max_frequency = 1.0 / minimal_reporting_interval_ms.InSecondsF();
return configuration.frequency() <= max_frequency;
}
PlatformSensorWin::~PlatformSensorWin() {
sensor_reader_->SetClient(nullptr);
sensor_thread_runner_->DeleteSoon(FROM_HERE, sensor_reader_);
}
} // namespace device
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