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comparison: hal/cocoa/CocoaSensor.mm
hal/cocoa/CocoaSensor.mm
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
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| -1:000000000000 | 0:a6b06de9c54f |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 3 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 #include "Hal.h" | |
| 5 #include "nsITimer.h" | |
| 6 #include "smslib.h" | |
| 7 #include "nsComponentManagerUtils.h" | |
| 8 | |
| 9 #include <mach/mach.h> | |
| 10 #include <cmath> | |
| 11 #import <IOKit/IOKitLib.h> | |
| 12 | |
| 13 #define MEAN_GRAVITY 9.80665 | |
| 14 #define DEFAULT_SENSOR_POLL 100 | |
| 15 using namespace mozilla::hal; | |
| 16 namespace mozilla { | |
| 17 namespace hal_impl { | |
| 18 static nsITimer* sUpdateTimer = nullptr; | |
| 19 static bool sActiveSensors[NUM_SENSOR_TYPE]; | |
| 20 static io_connect_t sDataPort = IO_OBJECT_NULL; | |
| 21 static uint64_t sLastMean = -1; | |
| 22 static float | |
| 23 LMUvalueToLux(uint64_t aValue) | |
| 24 { | |
| 25 //Conversion formula from regression. See Bug 793728. | |
| 26 // -3*(10^-27)*x^4 + 2.6*(10^-19)*x^3 + -3.4*(10^-12)*x^2 + 3.9*(10^-5)*x - 0.19 | |
| 27 long double powerC4 = 1/pow((long double)10,27); | |
| 28 long double powerC3 = 1/pow((long double)10,19); | |
| 29 long double powerC2 = 1/pow((long double)10,12); | |
| 30 long double powerC1 = 1/pow((long double)10,5); | |
| 31 | |
| 32 long double term4 = -3.0 * powerC4 * pow(aValue,4); | |
| 33 long double term3 = 2.6 * powerC3 * pow(aValue,3); | |
| 34 long double term2 = -3.4 * powerC2 * pow(aValue,2); | |
| 35 long double term1 = 3.9 * powerC1 * aValue; | |
| 36 | |
| 37 float lux = ceil(static_cast<float>(term4 + term3 + term2 + term1 - 0.19)); | |
| 38 return lux > 0 ? lux : 0; | |
| 39 } | |
| 40 void | |
| 41 UpdateHandler(nsITimer *aTimer, void *aClosure) | |
| 42 { | |
| 43 for (int i = 0; i < NUM_SENSOR_TYPE; i++) { | |
| 44 if (!sActiveSensors[i]) { | |
| 45 continue; | |
| 46 } | |
| 47 SensorType sensor = static_cast<SensorType>(i); | |
| 48 InfallibleTArray<float> values; | |
| 49 if (sensor == SENSOR_ACCELERATION) { | |
| 50 sms_acceleration accel; | |
| 51 smsGetData(&accel); | |
| 52 | |
| 53 values.AppendElement(accel.x * MEAN_GRAVITY); | |
| 54 values.AppendElement(accel.y * MEAN_GRAVITY); | |
| 55 values.AppendElement(accel.z * MEAN_GRAVITY); | |
| 56 } else if (sensor == SENSOR_LIGHT && sDataPort != IO_OBJECT_NULL) { | |
| 57 kern_return_t kr; | |
| 58 uint32_t outputs = 2; | |
| 59 uint64_t lightLMU[outputs]; | |
| 60 | |
| 61 kr = IOConnectCallMethod(sDataPort, 0, nil, 0, nil, 0, lightLMU, &outputs, nil, 0); | |
| 62 if (kr == KERN_SUCCESS) { | |
| 63 uint64_t mean = (lightLMU[0] + lightLMU[1]) / 2; | |
| 64 if (mean == sLastMean) { | |
| 65 continue; | |
| 66 } | |
| 67 sLastMean = mean; | |
| 68 values.AppendElement(LMUvalueToLux(mean)); | |
| 69 } else if (kr == kIOReturnBusy) { | |
| 70 continue; | |
| 71 } | |
| 72 } | |
| 73 | |
| 74 hal::SensorData sdata(sensor, | |
| 75 PR_Now(), | |
| 76 values, | |
| 77 hal::SENSOR_ACCURACY_UNKNOWN); | |
| 78 hal::NotifySensorChange(sdata); | |
| 79 } | |
| 80 } | |
| 81 void | |
| 82 EnableSensorNotifications(SensorType aSensor) | |
| 83 { | |
| 84 if (aSensor == SENSOR_ACCELERATION) { | |
| 85 int result = smsStartup(nil, nil); | |
| 86 | |
| 87 if (result != SMS_SUCCESS) { | |
| 88 return; | |
| 89 } | |
| 90 | |
| 91 if (!smsLoadCalibration()) { | |
| 92 return; | |
| 93 } | |
| 94 } else if (aSensor == SENSOR_LIGHT) { | |
| 95 io_service_t serviceObject; | |
| 96 serviceObject = IOServiceGetMatchingService(kIOMasterPortDefault, | |
| 97 IOServiceMatching("AppleLMUController")); | |
| 98 if (!serviceObject) { | |
| 99 return; | |
| 100 } | |
| 101 kern_return_t kr; | |
| 102 kr = IOServiceOpen(serviceObject, mach_task_self(), 0, &sDataPort); | |
| 103 IOObjectRelease(serviceObject); | |
| 104 if (kr != KERN_SUCCESS) { | |
| 105 return; | |
| 106 } | |
| 107 } else { | |
| 108 NS_WARNING("EnableSensorNotifications called on an unknown sensor type"); | |
| 109 return; | |
| 110 } | |
| 111 sActiveSensors[aSensor] = true; | |
| 112 | |
| 113 if (!sUpdateTimer) { | |
| 114 CallCreateInstance("@mozilla.org/timer;1", &sUpdateTimer); | |
| 115 if (sUpdateTimer) { | |
| 116 sUpdateTimer->InitWithFuncCallback(UpdateHandler, | |
| 117 nullptr, | |
| 118 DEFAULT_SENSOR_POLL, | |
| 119 nsITimer::TYPE_REPEATING_SLACK); | |
| 120 } | |
| 121 } | |
| 122 } | |
| 123 void | |
| 124 DisableSensorNotifications(SensorType aSensor) | |
| 125 { | |
| 126 if (!sActiveSensors[aSensor] || (aSensor != SENSOR_ACCELERATION && aSensor != SENSOR_LIGHT)) { | |
| 127 return; | |
| 128 } | |
| 129 | |
| 130 sActiveSensors[aSensor] = false; | |
| 131 | |
| 132 if (aSensor == SENSOR_ACCELERATION) { | |
| 133 smsShutdown(); | |
| 134 } else if (aSensor == SENSOR_LIGHT) { | |
| 135 IOServiceClose(sDataPort); | |
| 136 } | |
| 137 // If all sensors are disabled, cancel the update timer. | |
| 138 if (sUpdateTimer) { | |
| 139 for (int i = 0; i < NUM_SENSOR_TYPE; i++) { | |
| 140 if (sActiveSensors[i]) { | |
| 141 return; | |
| 142 } | |
| 143 } | |
| 144 sUpdateTimer->Cancel(); | |
| 145 NS_RELEASE(sUpdateTimer); | |
| 146 } | |
| 147 } | |
| 148 } // hal_impl | |
| 149 } // mozilla |
