2 * Copyright (C) 2010 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
19 #include <sys/types.h>
20 #include <sys/limits.h>
22 #include <utils/Errors.h>
23 #include <utils/String8.h>
24 #include <utils/Flattenable.h>
26 #include <hardware/sensors.h>
28 #include <binder/AppOpsManager.h>
29 #include <binder/IServiceManager.h>
31 #include <gui/Sensor.h>
34 // ----------------------------------------------------------------------------
36 // ----------------------------------------------------------------------------
39 : mHandle(0), mType(0),
40 mMinValue(0), mMaxValue(0), mResolution(0),
41 mPower(0), mMinDelay(0), mFifoReservedEventCount(0), mFifoMaxEventCount(0),
42 mMaxDelay(0), mFlags(0)
46 Sensor::Sensor(struct sensor_t const* hwSensor, int halVersion)
48 mName = hwSensor->name;
49 mVendor = hwSensor->vendor;
50 mVersion = hwSensor->version;
51 mHandle = hwSensor->handle;
52 mType = hwSensor->type;
53 mMinValue = 0; // FIXME: minValue
54 mMaxValue = hwSensor->maxRange; // FIXME: maxValue
55 mResolution = hwSensor->resolution;
56 mPower = hwSensor->power;
57 mMinDelay = hwSensor->minDelay;
60 // Set fifo event count zero for older devices which do not support batching. Fused
61 // sensors also have their fifo counts set to zero.
62 if (halVersion > SENSORS_DEVICE_API_VERSION_1_0) {
63 mFifoReservedEventCount = hwSensor->fifoReservedEventCount;
64 mFifoMaxEventCount = hwSensor->fifoMaxEventCount;
66 mFifoReservedEventCount = 0;
67 mFifoMaxEventCount = 0;
70 if (halVersion >= SENSORS_DEVICE_API_VERSION_1_3) {
71 if (hwSensor->maxDelay > INT_MAX) {
72 // Max delay is declared as a 64 bit integer for 64 bit architectures. But it should
73 // always fit in a 32 bit integer, log error and cap it to INT_MAX.
74 ALOGE("Sensor maxDelay overflow error %s %" PRId64, mName.string(),
75 static_cast<int64_t>(hwSensor->maxDelay));
78 mMaxDelay = static_cast<int32_t>(hwSensor->maxDelay);
81 // For older hals set maxDelay to 0.
85 // Ensure existing sensors have correct string type, required permissions and reporting mode.
86 // Set reportingMode for all android defined sensor types, set wake-up flag only for proximity
87 // sensor, significant motion, tilt, pick_up gesture, wake gesture and glance gesture on older
88 // HALs. Newer HALs can define both wake-up and non wake-up proximity sensors.
89 // All the OEM defined defined sensors have flags set to whatever is provided by the HAL.
91 case SENSOR_TYPE_ACCELEROMETER:
92 mStringType = SENSOR_STRING_TYPE_ACCELEROMETER;
93 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
95 case SENSOR_TYPE_AMBIENT_TEMPERATURE:
96 mStringType = SENSOR_STRING_TYPE_AMBIENT_TEMPERATURE;
97 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
99 case SENSOR_TYPE_GAME_ROTATION_VECTOR:
100 mStringType = SENSOR_STRING_TYPE_GAME_ROTATION_VECTOR;
101 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
103 case SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR:
104 mStringType = SENSOR_STRING_TYPE_GEOMAGNETIC_ROTATION_VECTOR;
105 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
107 case SENSOR_TYPE_GRAVITY:
108 mStringType = SENSOR_STRING_TYPE_GRAVITY;
109 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
111 case SENSOR_TYPE_GYROSCOPE:
112 mStringType = SENSOR_STRING_TYPE_GYROSCOPE;
113 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
115 case SENSOR_TYPE_GYROSCOPE_UNCALIBRATED:
116 mStringType = SENSOR_STRING_TYPE_GYROSCOPE_UNCALIBRATED;
117 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
119 case SENSOR_TYPE_HEART_RATE: {
120 mStringType = SENSOR_STRING_TYPE_HEART_RATE;
121 mRequiredPermission = SENSOR_PERMISSION_BODY_SENSORS;
122 AppOpsManager appOps;
123 mRequiredAppOp = appOps.permissionToOpCode(String16(SENSOR_PERMISSION_BODY_SENSORS));
124 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
126 case SENSOR_TYPE_LIGHT:
127 mStringType = SENSOR_STRING_TYPE_LIGHT;
128 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
130 case SENSOR_TYPE_LINEAR_ACCELERATION:
131 mStringType = SENSOR_STRING_TYPE_LINEAR_ACCELERATION;
132 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
134 case SENSOR_TYPE_MAGNETIC_FIELD:
135 mStringType = SENSOR_STRING_TYPE_MAGNETIC_FIELD;
136 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
138 case SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED:
139 mStringType = SENSOR_STRING_TYPE_MAGNETIC_FIELD_UNCALIBRATED;
140 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
142 case SENSOR_TYPE_ORIENTATION:
143 mStringType = SENSOR_STRING_TYPE_ORIENTATION;
144 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
146 case SENSOR_TYPE_PRESSURE:
147 mStringType = SENSOR_STRING_TYPE_PRESSURE;
148 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
150 case SENSOR_TYPE_PROXIMITY:
151 mStringType = SENSOR_STRING_TYPE_PROXIMITY;
152 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
153 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
154 mFlags |= SENSOR_FLAG_WAKE_UP;
157 case SENSOR_TYPE_RELATIVE_HUMIDITY:
158 mStringType = SENSOR_STRING_TYPE_RELATIVE_HUMIDITY;
159 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
161 case SENSOR_TYPE_ROTATION_VECTOR:
162 mStringType = SENSOR_STRING_TYPE_ROTATION_VECTOR;
163 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
165 case SENSOR_TYPE_SIGNIFICANT_MOTION:
166 mStringType = SENSOR_STRING_TYPE_SIGNIFICANT_MOTION;
167 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE;
168 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
169 mFlags |= SENSOR_FLAG_WAKE_UP;
172 case SENSOR_TYPE_STEP_COUNTER:
173 mStringType = SENSOR_STRING_TYPE_STEP_COUNTER;
174 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
176 case SENSOR_TYPE_STEP_DETECTOR:
177 mStringType = SENSOR_STRING_TYPE_STEP_DETECTOR;
178 mFlags |= SENSOR_FLAG_SPECIAL_REPORTING_MODE;
180 case SENSOR_TYPE_TEMPERATURE:
181 mStringType = SENSOR_STRING_TYPE_TEMPERATURE;
182 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
184 case SENSOR_TYPE_TILT_DETECTOR:
185 mStringType = SENSOR_STRING_TYPE_TILT_DETECTOR;
186 mFlags |= SENSOR_FLAG_SPECIAL_REPORTING_MODE;
187 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
188 mFlags |= SENSOR_FLAG_WAKE_UP;
191 case SENSOR_TYPE_WAKE_GESTURE:
192 mStringType = SENSOR_STRING_TYPE_WAKE_GESTURE;
193 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE;
194 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
195 mFlags |= SENSOR_FLAG_WAKE_UP;
198 case SENSOR_TYPE_GLANCE_GESTURE:
199 mStringType = SENSOR_STRING_TYPE_GLANCE_GESTURE;
200 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE;
201 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
202 mFlags |= SENSOR_FLAG_WAKE_UP;
205 case SENSOR_TYPE_PICK_UP_GESTURE:
206 mStringType = SENSOR_STRING_TYPE_PICK_UP_GESTURE;
207 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE;
208 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
209 mFlags |= SENSOR_FLAG_WAKE_UP;
212 case SENSOR_TYPE_WRIST_TILT_GESTURE:
213 mStringType = SENSOR_STRING_TYPE_WRIST_TILT_GESTURE;
214 mFlags |= SENSOR_FLAG_SPECIAL_REPORTING_MODE;
215 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
216 mFlags |= SENSOR_FLAG_WAKE_UP;
220 // Only pipe the stringType, requiredPermission and flags for custom sensors.
221 if (halVersion > SENSORS_DEVICE_API_VERSION_1_0 && hwSensor->stringType) {
222 mStringType = hwSensor->stringType;
224 if (halVersion > SENSORS_DEVICE_API_VERSION_1_0 && hwSensor->requiredPermission) {
225 mRequiredPermission = hwSensor->requiredPermission;
226 if (!strcmp(mRequiredPermission, SENSOR_PERMISSION_BODY_SENSORS)) {
227 AppOpsManager appOps;
228 mRequiredAppOp = appOps.permissionToOpCode(String16(SENSOR_PERMISSION_BODY_SENSORS));
232 if (halVersion >= SENSORS_DEVICE_API_VERSION_1_3) {
233 mFlags = static_cast<uint32_t>(hwSensor->flags);
235 // This is an OEM defined sensor on an older HAL. Use minDelay to determine the
236 // reporting mode of the sensor.
238 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
239 } else if (mMinDelay == 0) {
240 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
241 } else if (mMinDelay < 0) {
242 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE;
248 // For the newer HALs log errors if reporting mask flags are set incorrectly.
249 if (halVersion >= SENSORS_DEVICE_API_VERSION_1_3) {
250 // Wake-up flag is set here.
251 mFlags |= (hwSensor->flags & SENSOR_FLAG_WAKE_UP);
252 if (mFlags != hwSensor->flags) {
253 int actualReportingMode =
254 (hwSensor->flags & REPORTING_MODE_MASK) >> REPORTING_MODE_SHIFT;
255 int expectedReportingMode = (mFlags & REPORTING_MODE_MASK) >> REPORTING_MODE_SHIFT;
256 if (actualReportingMode != expectedReportingMode) {
257 ALOGE("Reporting Mode incorrect: sensor %s handle=%d type=%d "
258 "actual=%d expected=%d",
259 mName.string(), mHandle, mType, actualReportingMode, expectedReportingMode);
265 if (mRequiredPermission.length() > 0) {
266 // If the sensor is protected by a permission we need to know if it is
267 // a runtime one to determine whether we can use the permission cache.
268 sp<IBinder> binder = defaultServiceManager()->getService(String16("permission"));
270 sp<IPermissionController> permCtrl = interface_cast<IPermissionController>(binder);
271 mRequiredPermissionRuntime = permCtrl->isRuntimePermission(
272 String16(mRequiredPermission));
281 const String8& Sensor::getName() const {
285 const String8& Sensor::getVendor() const {
289 int32_t Sensor::getHandle() const {
293 int32_t Sensor::getType() const {
297 float Sensor::getMinValue() const {
301 float Sensor::getMaxValue() const {
305 float Sensor::getResolution() const {
309 float Sensor::getPowerUsage() const {
313 int32_t Sensor::getMinDelay() const {
317 nsecs_t Sensor::getMinDelayNs() const {
318 return getMinDelay() * 1000;
321 int32_t Sensor::getVersion() const {
325 uint32_t Sensor::getFifoReservedEventCount() const {
326 return mFifoReservedEventCount;
329 uint32_t Sensor::getFifoMaxEventCount() const {
330 return mFifoMaxEventCount;
333 const String8& Sensor::getStringType() const {
337 const String8& Sensor::getRequiredPermission() const {
338 return mRequiredPermission;
341 bool Sensor::isRequiredPermissionRuntime() const {
342 return mRequiredPermissionRuntime;
345 int32_t Sensor::getRequiredAppOp() const {
346 return mRequiredAppOp;
349 int32_t Sensor::getMaxDelay() const {
353 uint32_t Sensor::getFlags() const {
357 bool Sensor::isWakeUpSensor() const {
358 return mFlags & SENSOR_FLAG_WAKE_UP;
361 int32_t Sensor::getReportingMode() const {
362 return ((mFlags & REPORTING_MODE_MASK) >> REPORTING_MODE_SHIFT);
365 size_t Sensor::getFlattenedSize() const
368 sizeof(int32_t) * 3 +
370 sizeof(int32_t) * 6 +
373 size_t variableSize =
374 sizeof(uint32_t) + FlattenableUtils::align<4>(mName.length()) +
375 sizeof(uint32_t) + FlattenableUtils::align<4>(mVendor.length()) +
376 sizeof(uint32_t) + FlattenableUtils::align<4>(mStringType.length()) +
377 sizeof(uint32_t) + FlattenableUtils::align<4>(mRequiredPermission.length());
379 return fixedSize + variableSize;
382 status_t Sensor::flatten(void* buffer, size_t size) const {
383 if (size < getFlattenedSize()) {
387 flattenString8(buffer, size, mName);
388 flattenString8(buffer, size, mVendor);
389 FlattenableUtils::write(buffer, size, mVersion);
390 FlattenableUtils::write(buffer, size, mHandle);
391 FlattenableUtils::write(buffer, size, mType);
392 FlattenableUtils::write(buffer, size, mMinValue);
393 FlattenableUtils::write(buffer, size, mMaxValue);
394 FlattenableUtils::write(buffer, size, mResolution);
395 FlattenableUtils::write(buffer, size, mPower);
396 FlattenableUtils::write(buffer, size, mMinDelay);
397 FlattenableUtils::write(buffer, size, mFifoReservedEventCount);
398 FlattenableUtils::write(buffer, size, mFifoMaxEventCount);
399 flattenString8(buffer, size, mStringType);
400 flattenString8(buffer, size, mRequiredPermission);
401 FlattenableUtils::write(buffer, size, mRequiredPermissionRuntime);
402 FlattenableUtils::write(buffer, size, mRequiredAppOp);
403 FlattenableUtils::write(buffer, size, mMaxDelay);
404 FlattenableUtils::write(buffer, size, mFlags);
408 status_t Sensor::unflatten(void const* buffer, size_t size) {
409 if (!unflattenString8(buffer, size, mName)) {
412 if (!unflattenString8(buffer, size, mVendor)) {
417 sizeof(int32_t) * 3 +
420 if (size < fixedSize) {
424 FlattenableUtils::read(buffer, size, mVersion);
425 FlattenableUtils::read(buffer, size, mHandle);
426 FlattenableUtils::read(buffer, size, mType);
427 FlattenableUtils::read(buffer, size, mMinValue);
428 FlattenableUtils::read(buffer, size, mMaxValue);
429 FlattenableUtils::read(buffer, size, mResolution);
430 FlattenableUtils::read(buffer, size, mPower);
431 FlattenableUtils::read(buffer, size, mMinDelay);
432 FlattenableUtils::read(buffer, size, mFifoReservedEventCount);
433 FlattenableUtils::read(buffer, size, mFifoMaxEventCount);
435 if (!unflattenString8(buffer, size, mStringType)) {
438 if (!unflattenString8(buffer, size, mRequiredPermission)) {
441 FlattenableUtils::read(buffer, size, mRequiredPermissionRuntime);
442 FlattenableUtils::read(buffer, size, mRequiredAppOp);
443 FlattenableUtils::read(buffer, size, mMaxDelay);
444 FlattenableUtils::read(buffer, size, mFlags);
448 void Sensor::flattenString8(void*& buffer, size_t& size,
449 const String8& string8) {
450 uint32_t len = static_cast<uint32_t>(string8.length());
451 FlattenableUtils::write(buffer, size, len);
452 memcpy(static_cast<char*>(buffer), string8.string(), len);
453 FlattenableUtils::advance(buffer, size, FlattenableUtils::align<4>(len));
456 bool Sensor::unflattenString8(void const*& buffer, size_t& size, String8& outputString8) {
458 if (size < sizeof(len)) {
461 FlattenableUtils::read(buffer, size, len);
465 outputString8.setTo(static_cast<char const*>(buffer), len);
466 FlattenableUtils::advance(buffer, size, FlattenableUtils::align<4>(len));
470 // ----------------------------------------------------------------------------
471 }; // namespace android