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Side by Side Diff: services/device/generic_sensor/platform_sensor_ambient_light_mac.cc

Issue 2865263002: Move //device/generic_sensor to be part of the internal implementation of the Device Service. (Closed)
Patch Set: code rebase Created 3 years, 7 months ago
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1 // Copyright 2016 The Chromium Authors. All rights reserved. 1 // Copyright 2016 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #include "device/generic_sensor/platform_sensor_ambient_light_mac.h" 5 #include "services/device/generic_sensor/platform_sensor_ambient_light_mac.h"
6 6
7 #include <stdint.h> 7 #include <stdint.h>
8 8
9 #include <IOKit/IOMessage.h> 9 #include <IOKit/IOMessage.h>
10 10
11 #include "base/bind.h" 11 #include "base/bind.h"
12 #include "device/base/synchronization/shared_memory_seqlock_buffer.h" 12 #include "device/base/synchronization/shared_memory_seqlock_buffer.h"
13 #include "device/generic_sensor/generic_sensor_consts.h" 13 #include "services/device/generic_sensor/generic_sensor_consts.h"
14 #include "device/generic_sensor/platform_sensor_provider_mac.h" 14 #include "services/device/generic_sensor/platform_sensor_provider_mac.h"
15 15
16 namespace { 16 namespace {
17 17
18 // Convert the value returned by the ambient light LMU sensor on Mac 18 // Convert the value returned by the ambient light LMU sensor on Mac
19 // hardware to a lux value. 19 // hardware to a lux value.
20 double LMUvalueToLux(uint64_t raw_value) { 20 double LMUvalueToLux(uint64_t raw_value) {
21 // Conversion formula from regression. 21 // Conversion formula from regression.
22 // https://bugzilla.mozilla.org/show_bug.cgi?id=793728 22 // https://bugzilla.mozilla.org/show_bug.cgi?id=793728
23 // Let x = raw_value, then 23 // Let x = raw_value, then
24 // lux = -2.978303814*(10^-27)*x^4 + 2.635687683*(10^-19)*x^3 - 24 // lux = -2.978303814*(10^-27)*x^4 + 2.635687683*(10^-19)*x^3 -
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166 current_lux_ = lux; 166 current_lux_ = lux;
167 167
168 SensorReading reading; 168 SensorReading reading;
169 reading.timestamp = (base::TimeTicks::Now() - base::TimeTicks()).InSecondsF(); 169 reading.timestamp = (base::TimeTicks::Now() - base::TimeTicks()).InSecondsF();
170 reading.values[0] = current_lux_; 170 reading.values[0] = current_lux_;
171 UpdateSensorReading(reading, true); 171 UpdateSensorReading(reading, true);
172 return true; 172 return true;
173 } 173 }
174 174
175 } // namespace device 175 } // namespace device
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