Index: device/generic_sensor/platform_sensor_ambient_light_mac.cc |
diff --git a/device/generic_sensor/platform_sensor_ambient_light_mac.cc b/device/generic_sensor/platform_sensor_ambient_light_mac.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..96098eeebfd1bda92d9deabadaad50f3db6a65d6 |
--- /dev/null |
+++ b/device/generic_sensor/platform_sensor_ambient_light_mac.cc |
@@ -0,0 +1,73 @@ |
+// 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 "device/generic_sensor/platform_sensor_ambient_light_mac.h" |
+ |
+#include "base/bind.h" |
+#include "device/generic_sensor/ambient_light_mac.h" |
+#include "device/generic_sensor/platform_sensor_provider_mac.h" |
+#include "device/generic_sensor/platform_sensor_util_mac.h" |
+#include "device/generic_sensor/shared_memory_seqlock_buffer.h" |
+ |
+namespace device { |
+ |
+struct DeviceLightData { |
Mikhail
2016/09/16 16:23:54
why is that needed?
|
+ DeviceLightData() : illuminance(0) {} |
+ double illuminance; |
+}; |
+ |
+typedef SharedMemorySeqLockBuffer<DeviceLightData> DeviceLightHardwareBuffer; |
Mikhail
2016/09/16 16:23:54
nit: using DeviceLightHardwareBuffer = ..
|
+ |
+PlatformSensorAmbientLightMac::PlatformSensorAmbientLightMac( |
+ mojom::SensorType type, |
+ mojo::ScopedSharedBufferMapping mapping, |
+ uint64_t buffer_size, |
+ PlatformSensorProvider* provider, |
+ const scoped_refptr<base::SingleThreadTaskRunner>& |
+ polling_thread_task_runner) |
+ : PlatformSensorMac(type, |
+ std::move(mapping), |
+ provider, |
+ polling_thread_task_runner), |
+ current_lux(0) { |
+ platformSensor_ = AmbientLightSensor::Create(); |
+} |
+ |
+mojom::ReportingMode PlatformSensorAmbientLightMac::GetReportingMode() { |
+ return mojom::ReportingMode::ON_CHANGE; |
+} |
+ |
+bool PlatformSensorAmbientLightMac::CheckSensorConfiguration( |
+ const PlatformSensorConfiguration& configuration) { |
+ return configuration.frequency() > 0 && configuration.frequency() <= 60; |
Mikhail
2016/09/16 16:23:54
PlatformSensorConfiguration::kMaxAllowedFrequency
|
+} |
+ |
+PlatformSensorConfiguration |
+PlatformSensorAmbientLightMac::GetDefaultConfiguration() { |
+ PlatformSensorConfiguration default_configuration; |
+ // Default configuration inherited from content/browser/device_sensors. |
+ default_configuration.set_frequency(5); |
+ return default_configuration; |
+} |
+ |
+void PlatformSensorAmbientLightMac::UpdateReading() { |
+ uint64_t lux_value[2]; |
+ platformSensor_->ReadSensorValue(lux_value); |
+ uint64_t mean = (lux_value[0] + lux_value[1]) / 2; |
+ double lux = device::LMUvalueToLux(mean); |
+ if (lux == current_lux) |
+ return; |
+ current_lux = lux; |
+ DeviceLightHardwareBuffer* light_buffer = |
+ static_cast<DeviceLightHardwareBuffer*>(shared_buffer_mapping_.get()); |
+ light_buffer->seqlock.WriteBegin(); |
+ light_buffer->data.illuminance = lux; |
+ light_buffer->seqlock.WriteEnd(); |
+ ui_task_runner_->PostTask( |
+ FROM_HERE, |
+ base::Bind(&PlatformSensorAmbientLightMac::NotifySensorReadingChanged, |
+ base::Unretained(this))); |
+} |
+ |
+} // namespace device |