mirror of
https://github.com/classilla/tenfourfox.git
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177 lines
5.3 KiB
Plaintext
177 lines
5.3 KiB
Plaintext
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "Hal.h"
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#include "nsITimer.h"
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#include "smslib.h"
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#include "nsComponentManagerUtils.h"
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#include <mach/mach.h>
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#include <cmath>
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#import <IOKit/IOKitLib.h>
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#define MEAN_GRAVITY 9.80665
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#define DEFAULT_SENSOR_POLL 100
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using namespace mozilla::hal;
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namespace mozilla {
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namespace hal_impl {
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static nsITimer* sUpdateTimer = nullptr;
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static bool sActiveSensors[NUM_SENSOR_TYPE];
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static io_connect_t sDataPort = IO_OBJECT_NULL;
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static uint64_t sLastMean = -1;
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static float
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LMUvalueToLux(uint64_t aValue)
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{
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//Conversion formula from regression. See Bug 793728.
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// -3*(10^-27)*x^4 + 2.6*(10^-19)*x^3 + -3.4*(10^-12)*x^2 + 3.9*(10^-5)*x - 0.19
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long double powerC4 = 1/pow((long double)10,27);
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long double powerC3 = 1/pow((long double)10,19);
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long double powerC2 = 1/pow((long double)10,12);
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long double powerC1 = 1/pow((long double)10,5);
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long double term4 = -3.0 * powerC4 * pow(aValue,4);
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long double term3 = 2.6 * powerC3 * pow(aValue,3);
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long double term2 = -3.4 * powerC2 * pow(aValue,2);
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long double term1 = 3.9 * powerC1 * aValue;
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float lux = ceil(static_cast<float>(term4 + term3 + term2 + term1 - 0.19));
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return lux > 0 ? lux : 0;
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}
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void
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UpdateHandler(nsITimer *aTimer, void *aClosure)
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{
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for (int i = 0; i < NUM_SENSOR_TYPE; i++) {
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if (!sActiveSensors[i]) {
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continue;
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}
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SensorType sensor = static_cast<SensorType>(i);
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InfallibleTArray<float> values;
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if (sensor == SENSOR_ACCELERATION) {
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sms_acceleration accel;
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smsGetData(&accel);
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values.AppendElement(accel.x * MEAN_GRAVITY);
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values.AppendElement(accel.y * MEAN_GRAVITY);
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values.AppendElement(accel.z * MEAN_GRAVITY);
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} else if (sensor == SENSOR_LIGHT && sDataPort != IO_OBJECT_NULL) {
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kern_return_t kr;
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uint32_t outputs = 2;
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uint64_t lightLMU[outputs];
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#if(0)
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kr = IOConnectCallMethod(sDataPort, 0, nil, 0, nil, 0, lightLMU, &outputs, nil, 0);
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#else
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/* 10.4 doesn't have IOConnectCallMethod. However, it does have the related
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IOConnectMethod* functions (see
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http://developer.apple.com/library/mac/#samplecode/SimpleUserClient/Listings/User_Client_Info_txt.html
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and
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http://www.osxbook.com/book/bonus/chapter10/light/
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The function above calls the hidden io_connect_t with
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0 (function #) nil (input value array) 0 (number of input values)
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nil (input struct parametre)
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lightLMU (output value array) &outputs (pointer to number of output values)
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nil (output struct parametre) 0 (output structure size).
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So the 10.4 equivalent is, based on Amit's code,
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*/
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SInt32 lightLMU_1; // can't use an array here
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SInt32 lightLMU_2;
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kr = IOConnectMethodScalarIScalarO(sDataPort, 0, // selector: read sensor
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0, // no inputs
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2, // two outputs
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&lightLMU_1, &lightLMU_2);
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lightLMU[0] = lightLMU_1;
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lightLMU[1] = lightLMU_2;
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// Whew!
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#endif
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if (kr == KERN_SUCCESS) {
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uint64_t mean = (lightLMU[0] + lightLMU[1]) / 2;
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if (mean == sLastMean) {
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continue;
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}
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sLastMean = mean;
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values.AppendElement(LMUvalueToLux(mean));
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} else if (kr == kIOReturnBusy) {
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continue;
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}
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}
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hal::SensorData sdata(sensor,
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PR_Now(),
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values,
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hal::SENSOR_ACCURACY_UNKNOWN);
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hal::NotifySensorChange(sdata);
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}
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}
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void
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EnableSensorNotifications(SensorType aSensor)
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{
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if (aSensor == SENSOR_ACCELERATION) {
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int result = smsStartup(nil, nil);
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if (result != SMS_SUCCESS) {
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return;
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}
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if (!smsLoadCalibration()) {
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return;
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}
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} else if (aSensor == SENSOR_LIGHT) {
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io_service_t serviceObject;
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serviceObject = IOServiceGetMatchingService(kIOMasterPortDefault,
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IOServiceMatching("AppleLMUController"));
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if (!serviceObject) {
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return;
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}
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kern_return_t kr;
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kr = IOServiceOpen(serviceObject, mach_task_self(), 0, &sDataPort);
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IOObjectRelease(serviceObject);
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if (kr != KERN_SUCCESS) {
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return;
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}
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} else {
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NS_WARNING("EnableSensorNotifications called on an unknown sensor type");
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return;
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}
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sActiveSensors[aSensor] = true;
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if (!sUpdateTimer) {
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CallCreateInstance("@mozilla.org/timer;1", &sUpdateTimer);
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if (sUpdateTimer) {
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sUpdateTimer->InitWithFuncCallback(UpdateHandler,
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nullptr,
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DEFAULT_SENSOR_POLL,
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nsITimer::TYPE_REPEATING_SLACK);
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}
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}
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}
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void
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DisableSensorNotifications(SensorType aSensor)
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{
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if (!sActiveSensors[aSensor] || (aSensor != SENSOR_ACCELERATION && aSensor != SENSOR_LIGHT)) {
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return;
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}
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sActiveSensors[aSensor] = false;
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if (aSensor == SENSOR_ACCELERATION) {
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smsShutdown();
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} else if (aSensor == SENSOR_LIGHT) {
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IOServiceClose(sDataPort);
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}
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// If all sensors are disabled, cancel the update timer.
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if (sUpdateTimer) {
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for (int i = 0; i < NUM_SENSOR_TYPE; i++) {
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if (sActiveSensors[i]) {
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return;
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}
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}
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sUpdateTimer->Cancel();
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NS_RELEASE(sUpdateTimer);
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}
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}
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} // namespace hal_impl
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} // namespace mozilla
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