android alsps代码跟踪
相关文件列表
01. frameworks/base/services/core/java/com/android/server/display/DisplayPowerController.java02. frameworks/base/services/core/java/com/android/server/display/DisplayManagerService.java 03. frameworks/base/services/core/java/com/android/server/power/PowerManagerService.java 04. frameworks/base/core/java/android/hardware/SystemSensorManager.java 05. frameworks/base/core/java/android/hardware/SensorManager.java 06. frameworks/base/core/jni/android_hardware_SensorManager.cpp 07. frameworks/native/libs/gui/SensorManager.cpp 08. frameworks/native/include/gui/SensorManager.h 09. frameworks/native/libs/gui/ISensorServer.cpp 10. frameworks/native/include/gui/ISensorServer.h 11. alps/frameworks/native/services/sensorservice/SensorService.h 12. frameworks/native/services/sensorservice/SensorService.cpp 20. frameworks/native/services/sensorservice/SensorInterface.h 21. vendor/mediatek/proprietary/hardware/sensor/sensors.c
1. ===============================================================================
frameworks/base/services/core/java/com/android/server/display/DisplayPowerController.java
public DisplayPowerController(Context context, DisplayPowerCallbacks callbacks, Handler handler, SensorManager sensorManager, DisplayBlanker blanker) { ... ... mSensorManager = sensorManager; ... ... if (!DEBUG_PRETEND_PROXIMITY_SENSOR_ABSENT) { mProximitySensor = mSensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY); if (mProximitySensor != null) { mProximityThreshold = Math.min(mProximitySensor.getMaximumRange(), TYPICAL_PROXIMITY_THRESHOLD); } } ... ... }
2. ================================================================================
frameworks/base/services/core/java/com/android/server/display/DisplayManagerService.java
private final class LocalService extends DisplayManagerInternal { @Override public void initPowerManagement(final DisplayPowerCallbacks callbacks, Handler handler, SensorManager sensorManager) { synchronized (mSyncRoot) { ... ... mDisplayPowerController = new DisplayPowerController( mContext, callbacks, handler, sensorManager, blanker); } } ... ... }
3. ================================================================================
frameworks/base/services/core/java/com/android/server/power/PowerManagerService.java
public final class PowerManagerService extends SystemService implements Watchdog.Monitor { ... ... public void systemReady(IAppOpsService appOps) { synchronized (mLock) { ... ... SensorManager sensorManager = new SystemSensorManager(mContext, mHandler.getLooper()); ... ... // Initialize display power management. mDisplayManagerInternal.initPowerManagement( mDisplayPowerCallbacks, mHandler, sensorManager); } } ... ... }
4. ================================================================================
frameworks/base/core/java/android/hardware/SystemSensorManager.java
public class SystemSensorManager extends SensorManager { ... ... //find == mSensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY); //## SensorManager private final ArrayList<Sensor> mFullSensorsList = new ArrayList<>(); ... ... /** {@hide} */ public SystemSensorManager(Context context, Looper mainLooper) { mMainLooper = mainLooper; mTargetSdkLevel = context.getApplicationInfo().targetSdkVersion; mContext = context; mNativeInstance = nativeCreate(context.getOpPackageName()); synchronized(mLock) { if (!sSensorModuleInitialized) { sSensorModuleInitialized = true; nativeClassInit(); } } // initialize the sensor list for (int index = 0;;++index) { Sensor sensor = new Sensor(); if (!nativeGetSensorAtIndex(mNativeInstance, sensor, index)) break; mFullSensorsList.add(sensor); mHandleToSensor.append(sensor.getHandle(), sensor); } } @Override protected List<Sensor> getFullSensorList() { return mFullSensorsList; } ... ... }
5. ================================================================================
frameworks/base/core/java/android/hardware/SensorManager.java
public abstract class SensorManager { ... ... public List<Sensor> getSensorList(int type) { // cache the returned lists the first time List<Sensor> list; final List<Sensor> fullList = getFullSensorList(); //## synchronized (mSensorListByType) { list = mSensorListByType.get(type); if (list == null) { if (type == Sensor.TYPE_ALL) { list = fullList; } else { list = new ArrayList<Sensor>(); for (Sensor i : fullList) { if (i.getType() == type) list.add(i); } } list = Collections.unmodifiableList(list); mSensorListByType.append(type, list); } } return list; } ... ...
//mProximitySensor = mSensorManager.getDefaultSensor(Sensor.TYPE_PROXIMITY); public Sensor getDefaultSensor(int type) { // TODO: need to be smarter, for now, just return the 1st sensor List<Sensor> l = getSensorList(type); boolean wakeUpSensor = false; // For the following sensor types, return a wake-up sensor. These types are by default // defined as wake-up sensors. For the rest of the SDK defined sensor types return a // non_wake-up version. if (type == Sensor.TYPE_PROXIMITY || type == Sensor.TYPE_SIGNIFICANT_MOTION || type == Sensor.TYPE_TILT_DETECTOR || type == Sensor.TYPE_WAKE_GESTURE || type == Sensor.TYPE_GLANCE_GESTURE || type == Sensor.TYPE_PICK_UP_GESTURE || type == Sensor.TYPE_WRIST_TILT_GESTURE) { wakeUpSensor = true; } for (Sensor sensor : l) { if (sensor.isWakeUpSensor() == wakeUpSensor) return sensor; } return null; } }
06. ================================================================================
JNI ================================================================================
frameworks/base/core/jni/android_hardware_SensorManager.cpp
... ... static jboolean nativeGetSensorAtIndex(JNIEnv *env, jclass clazz, jlong sensorManager, jobject sensor, jint index) { SensorManager* mgr = reinterpret_cast<SensorManager*>(sensorManager); Sensor const* const* sensorList; size_t count = mgr->getSensorList(&sensorList); //## if (size_t(index) >= count) { return false; } Sensor const* const list = sensorList[index]; //## const SensorOffsets& sensorOffsets(gSensorOffsets); jstring name = getInternedString(env, &list->getName()); jstring vendor = getInternedString(env, &list->getVendor()); jstring requiredPermission = getInternedString(env, &list->getRequiredPermission()); env->SetObjectField(sensor, sensorOffsets.name, name); env->SetObjectField(sensor, sensorOffsets.vendor, vendor); env->SetIntField(sensor, sensorOffsets.version, list->getVersion()); env->SetIntField(sensor, sensorOffsets.handle, list->getHandle()); env->SetFloatField(sensor, sensorOffsets.range, list->getMaxValue()); env->SetFloatField(sensor, sensorOffsets.resolution, list->getResolution()); env->SetFloatField(sensor, sensorOffsets.power, list->getPowerUsage()); env->SetIntField(sensor, sensorOffsets.minDelay, list->getMinDelay()); env->SetIntField(sensor, sensorOffsets.fifoReservedEventCount, list->getFifoReservedEventCount()); env->SetIntField(sensor, sensorOffsets.fifoMaxEventCount, list->getFifoMaxEventCount()); env->SetObjectField(sensor, sensorOffsets.requiredPermission, requiredPermission); env->SetIntField(sensor, sensorOffsets.maxDelay, list->getMaxDelay()); env->SetIntField(sensor, sensorOffsets.flags, list->getFlags()); if (env->CallBooleanMethod(sensor, sensorOffsets.setType, list->getType()) == JNI_FALSE) { jstring stringType = getInternedString(env, &list->getStringType()); env->SetObjectField(sensor, sensorOffsets.stringType, stringType); } return true; } ... ...
07. ================================================================================
frameworks/native/libs/gui/SensorManager.cpp
status_t SensorManager::assertStateLocked() const { if (mSensorServer == NULL) { // try for one second const String16 name("sensorservice"); for (int i=0 ; i<4 ; i++) { status_t err = getService(name, &mSensorServer); ... ... } ... ... mSensors = mSensorServer->getSensorList(mOpPackageName); //## size_t count = mSensors.size(); mSensorList = static_cast<Sensor const**>(malloc(count * sizeof(Sensor*))); for (size_t i=0 ; i<count ; i++) { mSensorList[i] = mSensors.array() + i; } } return NO_ERROR; } ssize_t SensorManager::getSensorList(Sensor const* const** list) const { Mutex::Autolock _l(mLock); status_t err = assertStateLocked(); if (err < 0) { return static_cast<ssize_t>(err); } *list = mSensorList; return static_cast<ssize_t>(mSensors.size()); }
08. ================================================================================
alps/frameworks/native/include/gui/SensorManager.h
class SensorManager : public ASensorManager { ... ... mutable sp<ISensorServer> mSensorServer; ... ... }
09. ===binder client (BpBinder)=&&=binder server (BnBinder)=======================================================
alps/frameworks/native/libs/gui/ISensorServer.cpp
class BpSensorServer : public BpInterface<ISensorServer> // find the getSensorList { public: ... ... virtual Vector<Sensor> getSensorList(const String16& opPackageName) { Parcel data, reply; data.writeInterfaceToken(ISensorServer::getInterfaceDescriptor()); data.writeString16(opPackageName); remote()->transact(GET_SENSOR_LIST, data, &reply); //## Sensor s; Vector<Sensor> v; uint32_t n = reply.readUint32(); v.setCapacity(n); while (n--) { reply.read(s); v.add(s); } return v; } ... ... } ... ... status_t BnSensorServer::onTransact( uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags) { switch(code) { case GET_SENSOR_LIST: { CHECK_INTERFACE(ISensorServer, data, reply); const String16& opPackageName = data.readString16(); Vector<Sensor> v(getSensorList(opPackageName)); //##SensorService::getSensorList size_t n = v.size(); reply->writeUint32(static_cast<uint32_t>(n)); for (size_t i = 0; i < n; i++) { reply->write(v[i]); } return NO_ERROR; } ... ... } return BBinder::onTransact(code, data, reply, flags); }
10. ===binder server (BnBinder)============================================================
alps/frameworks/native/include/gui/ISensorServer.h
class ISensorServer : public IInterface { public: DECLARE_META_INTERFACE(SensorServer); virtual Vector<Sensor> getSensorList(const String16& opPackageName) = 0; //## getSensorList virtual sp<ISensorEventConnection> createSensorEventConnection(const String8& packageName, int mode, const String16& opPackageName) = 0; virtual int32_t isDataInjectionEnabled() = 0; }; class BnSensorServer : public BnInterface<ISensorServer> { public: virtual status_t onTransact( uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags = 0); };
11 ================================================================================
alps/frameworks/native/services/sensorservice/SensorService.h
class SensorService : public BinderService<SensorService>, public BnSensorServer, protected Thread { ... ... Vector<Sensor> mSensorList; virtual Vector<Sensor> getSensorList(const String16& opPackageName); ... ... }
12. ================================================================================
frameworks/native/services/sensorservice/SensorService.cpp
Vector<Sensor> SensorService::getSensorList(const String16& opPackageName) { char value[PROPERTY_VALUE_MAX]; property_get("debug.sensors", value, "0"); const Vector<Sensor>& initialSensorList = (atoi(value)) ? mUserSensorListDebug : mUserSensorList; //## ?= mUserSensorList Vector<Sensor> accessibleSensorList; for (size_t i = 0; i < initialSensorList.size(); i++) { Sensor sensor = initialSensorList[i]; if (canAccessSensor(sensor, "getSensorList", opPackageName)) { accessibleSensorList.add(sensor); //## add SensorList } else { ALOGI("Skipped sensor %s because it requires permission %s and app op %d", sensor.getName().string(), sensor.getRequiredPermission().string(), sensor.getRequiredAppOp()); } } return accessibleSensorList; } void SensorService::onFirstRef() { sensor_t const* list; //## ssize_t count = dev.getSensorList(&list); ... ... for (ssize_t i=0 ; i<count ; i++) { registerSensor( new HardwareSensor(list[i]) ); //#### new Sensor ## ... ... } mUserSensorList = mSensorList; //## mSensorList if (hasGyro && hasAccel && hasMag) { Sensor aSensor; aSensor = registerVirtualSensor( new RotationVectorSensor() ); if (virtualSensorsNeeds & (1<<SENSOR_TYPE_ROTATION_VECTOR)) { mUserSensorList.add(aSensor); //## mSensorList } aSensor = registerVirtualSensor( new GravitySensor(list, count) ); if (virtualSensorsNeeds & (1<<SENSOR_TYPE_GRAVITY)) { mUserSensorList.add(aSensor); } aSensor = registerVirtualSensor( new LinearAccelerationSensor(list, count) ); if (virtualSensorsNeeds & (1<<SENSOR_TYPE_LINEAR_ACCELERATION)) { mUserSensorList.add(aSensor); } aSensor = registerVirtualSensor( new OrientationSensor() ); if (virtualSensorsNeeds & (1<<SENSOR_TYPE_ROTATION_VECTOR)) { mUserSensorList.replaceAt(aSensor, orientationIndex); } registerVirtualSensor( new CorrectedGyroSensor(list, count) ); registerVirtualSensor( new GyroDriftSensor() ); } mUserSensorListDebug = mSensorList; //## mSensorList ... ... } Sensor SensorService::registerSensor(SensorInterface* s) { sensors_event_t event; memset(&event, 0, sizeof(event)); const Sensor sensor(s->getSensor()); //## sensor // add to the sensor list (returned to clients) mSensorList.add(sensor); //## mSensorList // add to our handle->SensorInterface mapping mSensorMap.add(sensor.getHandle(), s); // create an entry in the mLastEventSeen array mLastEventSeen.add(sensor.getHandle(), NULL); return sensor; } Sensor SensorService::registerVirtualSensor(SensorInterface* s) { Sensor sensor = registerSensor(s); mVirtualSensorList.add( s ); return sensor; }
13 ================================================================================
alps/frameworks/native/services/sensorservice/SensorInterface.h
Sensor HardwareSensor::getSensor() const { return mSensor; }
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20 ================================================================================
alps/vendor/mediatek/proprietary/hardware/sensor/sensors.c
... ... #ifndef PROXIMITY_RANGE #define PROXIMITY_RANGE 1.00f #endif ... ... struct sensor_t sSensorList[] = { ... ... #if defined(CUSTOM_KERNEL_ALSPS) || defined(CUSTOM_KERNEL_PS) { .name = PROXIMITY, .vendor = PROXIMITY_VENDER, .version = 1, .handle = ID_PROXIMITY+ID_OFFSET, .type = SENSOR_TYPE_PROXIMITY, .maxRange = PROXIMITY_RANGE,//1.00f, .resolution = PROXIMITY_RESOLUTION,//1.0f, .power = PROXIMITY_POWER,//0.13f, .reserved = {} }, #endif //CUSTOM_KERNEL_ALSPS || CUSTOM_KERNEL_PS ... ... }
21 ————————————————————————————————————————-
alps/vendor/mediatek/proprietary/hardware/sensorhub/cwmcu/SensorChipInfo.cpp
... ... #ifndef PROXIMITY_RANGE #define PROXIMITY_RANGE 1.00f #endif ... ... struct sensor_t sSensorList[] = { ... ... #ifdef CUSTOM_KERNEL_PS { //Proximity .name = "Proximity Sensor", .vendor = "CyWee Group Ltd.", .version = 1, .handle = PROXIMITY, .type = SENSOR_TYPE_PROXIMITY, .maxRange = PROXIMITY_RANGE, .resolution = PROXIMITY_RESOLUTION, .power = PROXIMITY_POWER, .minDelay = 0, .fifoReservedEventCount = 0, .fifoMaxEventCount = 0, .stringType = NULL, .requiredPermission = NULL, .maxDelay = 10000, .flags = SENSOR_FLAG_WAKE_UP | SENSOR_FLAG_ON_CHANGE_MODE, }, #endif ... ... }
遗憾：未跟踪到maxRange, 只是搜索找到maxRange
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