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..c46df34372b1e8dc847ad63ed67450c04d41ebb5 |
--- /dev/null |
+++ b/device/generic_sensor/platform_sensor_ambient_light_mac.cc |
@@ -0,0 +1,70 @@ |
+// 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/shared_memory_seqlock_buffer.h" |
+ |
+namespace device { |
+ |
+using DeviceLightHardwareBuffer = SharedMemorySeqLockBuffer<double>; |
+ |
+PlatformSensorAmbientLightMac::PlatformSensorAmbientLightMac( |
+ mojom::SensorType type, |
+ mojo::ScopedSharedBufferMapping mapping, |
+ uint64_t buffer_size, |
+ PlatformSensorProvider* provider, |
+ scoped_refptr<base::SingleThreadTaskRunner> polling_thread_task_runner) |
+ : PlatformSensorMac(type, |
+ std::move(mapping), |
+ provider, |
+ polling_thread_task_runner), |
+ current_lux(0) { |
+ platformSensor_ = AmbientLightSensor::Create(); |
+} |
+ |
+PlatformSensorAmbientLightMac::~PlatformSensorAmbientLightMac() = default; |
+ |
+mojom::ReportingMode PlatformSensorAmbientLightMac::GetReportingMode() { |
+ return mojom::ReportingMode::ON_CHANGE; |
+} |
+ |
+bool PlatformSensorAmbientLightMac::CheckSensorConfiguration( |
+ const PlatformSensorConfiguration& configuration) { |
+ return configuration.frequency() > 0 && |
+ configuration.frequency() <= |
+ 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 = AmbientLightSensor::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 = lux; |
+ light_buffer->seqlock.WriteEnd(); |
+ ui_task_runner_->PostTask( |
+ FROM_HERE, |
+ base::Bind(&PlatformSensorAmbientLightMac::NotifySensorReadingChanged, |
+ base::Unretained(this))); |
Mikhail
2016/09/19 06:25:18
GetWeakPtr() to solve the potential raise conditio
|
+} |
+ |
+} // namespace device |