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Searched refs:dT (Results 1 – 7 of 7) sorted by relevance

/frameworks/native/services/sensorservice/
DFusion.cpp188 void Fusion::initFusion(const vec4_t& q, float dT) in initFusion() argument
204 const float dT2 = dT*dT; in initFusion()
205 const float dT3 = dT2*dT; in initFusion()
208 const float q00 = gyroVAR * dT + 0.33333f * biasVAR * dT3; in initFusion()
211 const float q11 = biasVAR * dT; in initFusion()
229 bool Fusion::checkInitComplete(int what, const vec3_t& d, float dT) { in checkInitComplete() argument
242 mGyroRate = dT; in checkInitComplete()
243 mData[2] += d*dT; in checkInitComplete()
274 void Fusion::handleGyro(const vec3_t& w, float dT) { in handleGyro() argument
275 if (!checkInitComplete(GYRO, w, dT)) in handleGyro()
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DFusion.h59 void handleGyro(const vec3_t& w, float dT);
76 void initFusion(const vec4_t& q0, float dT);
78 void predict(const vec3_t& w, float dT);
DSensorFusion.cpp65 const float dT = (event.timestamp - mGyroTime) / 1000000000.0f; in process() local
66 mFusion.handleGyro(vec3_t(event.data), dT); in process()
68 const float freq = 1 / dT; in process()
70 const float alpha = 1 / (1 + dT); // 1s time-constant in process()
/frameworks/base/core/java/android/hardware/
DLegacySensorManager.java411 float dT = (mT[j] - mT[j+1])*ns; in filter() local
412 dT *= dT; in filter()
413 A += Z*dT; in filter()
414 B += T*(T*dT); in filter()
415 C += (T*dT); in filter()
416 D += Z*(T*dT); in filter()
417 E += dT; in filter()
/frameworks/base/libs/common_time/
Dclock_recovery.cpp93 const float ClockRecoveryLoop::dT = 1.0; member in android::ClockRecoveryLoop
98 const float ClockRecoveryLoop::bias_RC = (dT / (2 * 3.14159f * bias_Fc));
99 const float ClockRecoveryLoop::bias_Alpha = (dT / (bias_RC + dT));
255 delta_f = last_delta_f_ - dT*(CO - CObias); in pushDisciplineEvent()
260 dCO = Kc * (1.0f + dT/Ti) * delta_f - Kc * last_delta_f_; in pushDisciplineEvent()
Dclock_recovery.h59 static const float dT;
/frameworks/base/docs/html/guide/topics/sensors/
Dsensors_motion.jd269 // In this example, alpha is calculated as t / (t + dT),
271 // dT is the event delivery rate.
374 final float dT = (event.timestamp - timestamp) * NS2S;
395 float thetaOverTwo = omegaMagnitude * dT / 2.0f;