1 /*
2 * Copyright (C) 2010 The Android Open Source Project
3 *
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
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
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.
15 */
16
17 #include <sensor/Sensor.h>
18
19 #include <inttypes.h>
20
21 #include <binder/AppOpsManager.h>
22 #include <binder/IPermissionController.h>
23 #include <binder/IServiceManager.h>
24 #include <android_permission_flags.h>
25
26 /*
27 * The permission to use for activity recognition sensors (like step counter).
28 * See sensor types for more details on what sensors should require this
29 * permission.
30 */
31 #define SENSOR_PERMISSION_ACTIVITY_RECOGNITION "android.permission.ACTIVITY_RECOGNITION"
32
33 // ----------------------------------------------------------------------------
34 namespace android {
35 // ----------------------------------------------------------------------------
36
Sensor(const char * name)37 Sensor::Sensor(const char * name) :
38 mName(name), mHandle(0), mType(0),
39 mMinValue(0), mMaxValue(0), mResolution(0),
40 mPower(0), mMinDelay(0), mVersion(0), mFifoReservedEventCount(0),
41 mFifoMaxEventCount(0), mRequiredAppOp(-1),
42 mMaxDelay(0), mFlags(0) {
43 }
44
Sensor(struct sensor_t const * hwSensor,int halVersion)45 Sensor::Sensor(struct sensor_t const* hwSensor, int halVersion) :
46 Sensor(*hwSensor, uuid_t(), halVersion) {
47 }
48
Sensor(struct sensor_t const & hwSensor,const uuid_t & uuid,int halVersion)49 Sensor::Sensor(struct sensor_t const& hwSensor, const uuid_t& uuid, int halVersion) :
50 Sensor("") {
51 mName = hwSensor.name;
52 mVendor = hwSensor.vendor;
53 mVersion = hwSensor.version;
54 mHandle = hwSensor.handle;
55 mType = hwSensor.type;
56 mMinValue = 0; // FIXME: minValue
57 mMaxValue = hwSensor.maxRange; // FIXME: maxValue
58 mResolution = hwSensor.resolution;
59 mPower = hwSensor.power;
60 mMinDelay = hwSensor.minDelay;
61 mFlags = 0;
62 mUuid = uuid;
63
64 // Set fifo event count zero for older devices which do not support batching. Fused
65 // sensors also have their fifo counts set to zero.
66 if (halVersion > SENSORS_DEVICE_API_VERSION_1_0) {
67 mFifoReservedEventCount = hwSensor.fifoReservedEventCount;
68 mFifoMaxEventCount = hwSensor.fifoMaxEventCount;
69 } else {
70 mFifoReservedEventCount = 0;
71 mFifoMaxEventCount = 0;
72 }
73
74 if (halVersion >= SENSORS_DEVICE_API_VERSION_1_3) {
75 if (hwSensor.maxDelay > INT_MAX) {
76 // Max delay is declared as a 64 bit integer for 64 bit architectures. But it should
77 // always fit in a 32 bit integer, log error and cap it to INT_MAX.
78 ALOGE("Sensor maxDelay overflow error %s %" PRId64, mName.c_str(),
79 static_cast<int64_t>(hwSensor.maxDelay));
80 mMaxDelay = INT_MAX;
81 } else {
82 mMaxDelay = static_cast<int32_t>(hwSensor.maxDelay);
83 }
84 } else {
85 // For older hals set maxDelay to 0.
86 mMaxDelay = 0;
87 }
88
89 // Ensure existing sensors have correct string type, required permissions and reporting mode.
90 // Set reportingMode for all android defined sensor types, set wake-up flag only for proximity
91 // sensor, significant motion, tilt, pick_up gesture, wake gesture and glance gesture on older
92 // HALs. Newer HALs can define both wake-up and non wake-up proximity sensors.
93 // All the OEM defined defined sensors have flags set to whatever is provided by the HAL.
94 switch (mType) {
95 case SENSOR_TYPE_ACCELEROMETER:
96 mStringType = SENSOR_STRING_TYPE_ACCELEROMETER;
97 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
98 break;
99 case SENSOR_TYPE_AMBIENT_TEMPERATURE:
100 mStringType = SENSOR_STRING_TYPE_AMBIENT_TEMPERATURE;
101 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
102 break;
103 case SENSOR_TYPE_GAME_ROTATION_VECTOR:
104 mStringType = SENSOR_STRING_TYPE_GAME_ROTATION_VECTOR;
105 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
106 break;
107 case SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR:
108 mStringType = SENSOR_STRING_TYPE_GEOMAGNETIC_ROTATION_VECTOR;
109 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
110 break;
111 case SENSOR_TYPE_GRAVITY:
112 mStringType = SENSOR_STRING_TYPE_GRAVITY;
113 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
114 break;
115 case SENSOR_TYPE_GYROSCOPE:
116 mStringType = SENSOR_STRING_TYPE_GYROSCOPE;
117 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
118 break;
119 case SENSOR_TYPE_GYROSCOPE_UNCALIBRATED:
120 mStringType = SENSOR_STRING_TYPE_GYROSCOPE_UNCALIBRATED;
121 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
122 break;
123 case SENSOR_TYPE_HEART_RATE: {
124 mStringType = SENSOR_STRING_TYPE_HEART_RATE;
125 mRequiredPermission =
126 android::permission::flags::replace_body_sensor_permission_enabled() ?
127 SENSOR_PERMISSION_READ_HEART_RATE : SENSOR_PERMISSION_BODY_SENSORS;
128 AppOpsManager appOps;
129 mRequiredAppOp = appOps.permissionToOpCode(String16(mRequiredPermission));
130 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
131 } break;
132 case SENSOR_TYPE_LIGHT:
133 mStringType = SENSOR_STRING_TYPE_LIGHT;
134 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
135 break;
136 case SENSOR_TYPE_LINEAR_ACCELERATION:
137 mStringType = SENSOR_STRING_TYPE_LINEAR_ACCELERATION;
138 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
139 break;
140 case SENSOR_TYPE_MAGNETIC_FIELD:
141 mStringType = SENSOR_STRING_TYPE_MAGNETIC_FIELD;
142 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
143 break;
144 case SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED:
145 mStringType = SENSOR_STRING_TYPE_MAGNETIC_FIELD_UNCALIBRATED;
146 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
147 break;
148 case SENSOR_TYPE_ORIENTATION:
149 mStringType = SENSOR_STRING_TYPE_ORIENTATION;
150 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
151 break;
152 case SENSOR_TYPE_PRESSURE:
153 mStringType = SENSOR_STRING_TYPE_PRESSURE;
154 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
155 break;
156 case SENSOR_TYPE_PROXIMITY:
157 mStringType = SENSOR_STRING_TYPE_PROXIMITY;
158 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
159 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
160 mFlags |= SENSOR_FLAG_WAKE_UP;
161 }
162 break;
163 case SENSOR_TYPE_RELATIVE_HUMIDITY:
164 mStringType = SENSOR_STRING_TYPE_RELATIVE_HUMIDITY;
165 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
166 break;
167 case SENSOR_TYPE_ROTATION_VECTOR:
168 mStringType = SENSOR_STRING_TYPE_ROTATION_VECTOR;
169 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
170 break;
171 case SENSOR_TYPE_SIGNIFICANT_MOTION:
172 mStringType = SENSOR_STRING_TYPE_SIGNIFICANT_MOTION;
173 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE;
174 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
175 mFlags |= SENSOR_FLAG_WAKE_UP;
176 }
177 break;
178 case SENSOR_TYPE_STEP_COUNTER: {
179 mStringType = SENSOR_STRING_TYPE_STEP_COUNTER;
180 mRequiredPermission = SENSOR_PERMISSION_ACTIVITY_RECOGNITION;
181 AppOpsManager appOps;
182 mRequiredAppOp =
183 appOps.permissionToOpCode(String16(mRequiredPermission));
184 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
185 } break;
186 case SENSOR_TYPE_STEP_DETECTOR: {
187 mStringType = SENSOR_STRING_TYPE_STEP_DETECTOR;
188 mRequiredPermission = SENSOR_PERMISSION_ACTIVITY_RECOGNITION;
189 AppOpsManager appOps;
190 mRequiredAppOp =
191 appOps.permissionToOpCode(String16(mRequiredPermission));
192 mFlags |= SENSOR_FLAG_SPECIAL_REPORTING_MODE;
193 } break;
194 case SENSOR_TYPE_TEMPERATURE:
195 mStringType = SENSOR_STRING_TYPE_TEMPERATURE;
196 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
197 break;
198 case SENSOR_TYPE_TILT_DETECTOR:
199 mStringType = SENSOR_STRING_TYPE_TILT_DETECTOR;
200 mFlags |= SENSOR_FLAG_SPECIAL_REPORTING_MODE;
201 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
202 mFlags |= SENSOR_FLAG_WAKE_UP;
203 }
204 break;
205 case SENSOR_TYPE_WAKE_GESTURE:
206 mStringType = SENSOR_STRING_TYPE_WAKE_GESTURE;
207 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE;
208 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
209 mFlags |= SENSOR_FLAG_WAKE_UP;
210 }
211 break;
212 case SENSOR_TYPE_GLANCE_GESTURE:
213 mStringType = SENSOR_STRING_TYPE_GLANCE_GESTURE;
214 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE;
215 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
216 mFlags |= SENSOR_FLAG_WAKE_UP;
217 }
218 break;
219 case SENSOR_TYPE_PICK_UP_GESTURE:
220 mStringType = SENSOR_STRING_TYPE_PICK_UP_GESTURE;
221 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE;
222 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
223 mFlags |= SENSOR_FLAG_WAKE_UP;
224 }
225 break;
226 case SENSOR_TYPE_LOW_LATENCY_OFFBODY_DETECT:
227 mStringType = SENSOR_STRING_TYPE_LOW_LATENCY_OFFBODY_DETECT;
228 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
229 break;
230 case SENSOR_TYPE_WRIST_TILT_GESTURE:
231 mStringType = SENSOR_STRING_TYPE_WRIST_TILT_GESTURE;
232 mFlags |= SENSOR_FLAG_SPECIAL_REPORTING_MODE;
233 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
234 mFlags |= SENSOR_FLAG_WAKE_UP;
235 }
236 break;
237 case SENSOR_TYPE_DEVICE_ORIENTATION:
238 mStringType = SENSOR_STRING_TYPE_DEVICE_ORIENTATION;
239 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
240 break;
241 case SENSOR_TYPE_DYNAMIC_SENSOR_META:
242 mStringType = SENSOR_STRING_TYPE_DYNAMIC_SENSOR_META;
243 mFlags |= SENSOR_FLAG_SPECIAL_REPORTING_MODE; // special trigger
244 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
245 mFlags |= SENSOR_FLAG_WAKE_UP;
246 }
247 break;
248 case SENSOR_TYPE_POSE_6DOF:
249 mStringType = SENSOR_STRING_TYPE_POSE_6DOF;
250 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
251 break;
252 case SENSOR_TYPE_STATIONARY_DETECT:
253 mStringType = SENSOR_STRING_TYPE_STATIONARY_DETECT;
254 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE;
255 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
256 mFlags |= SENSOR_FLAG_WAKE_UP;
257 }
258 break;
259 case SENSOR_TYPE_MOTION_DETECT:
260 mStringType = SENSOR_STRING_TYPE_MOTION_DETECT;
261 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE;
262 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) {
263 mFlags |= SENSOR_FLAG_WAKE_UP;
264 }
265 break;
266 case SENSOR_TYPE_HEART_BEAT:
267 mStringType = SENSOR_STRING_TYPE_HEART_BEAT;
268 mFlags |= SENSOR_FLAG_SPECIAL_REPORTING_MODE;
269 break;
270 case SENSOR_TYPE_ACCELEROMETER_UNCALIBRATED:
271 mStringType = SENSOR_STRING_TYPE_ACCELEROMETER_UNCALIBRATED;
272 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
273 break;
274 case SENSOR_TYPE_HINGE_ANGLE:
275 mStringType = SENSOR_STRING_TYPE_HINGE_ANGLE;
276 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
277 break;
278 case SENSOR_TYPE_HEAD_TRACKER:
279 mStringType = SENSOR_STRING_TYPE_HEAD_TRACKER;
280 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
281 break;
282 case SENSOR_TYPE_ACCELEROMETER_LIMITED_AXES:
283 mStringType = SENSOR_STRING_TYPE_ACCELEROMETER_LIMITED_AXES;
284 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
285 break;
286 case SENSOR_TYPE_GYROSCOPE_LIMITED_AXES:
287 mStringType = SENSOR_STRING_TYPE_GYROSCOPE_LIMITED_AXES;
288 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
289 break;
290 case SENSOR_TYPE_ACCELEROMETER_LIMITED_AXES_UNCALIBRATED:
291 mStringType = SENSOR_STRING_TYPE_ACCELEROMETER_LIMITED_AXES_UNCALIBRATED;
292 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
293 break;
294 case SENSOR_TYPE_GYROSCOPE_LIMITED_AXES_UNCALIBRATED:
295 mStringType = SENSOR_STRING_TYPE_GYROSCOPE_LIMITED_AXES_UNCALIBRATED;
296 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
297 break;
298 case SENSOR_TYPE_HEADING:
299 mStringType = SENSOR_STRING_TYPE_HEADING;
300 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
301 break;
302 default:
303 // Only pipe the stringType, requiredPermission and flags for custom sensors.
304 if (halVersion > SENSORS_DEVICE_API_VERSION_1_0 && hwSensor.stringType) {
305 mStringType = hwSensor.stringType;
306 }
307 if (halVersion > SENSORS_DEVICE_API_VERSION_1_0 && hwSensor.requiredPermission) {
308 mRequiredPermission = hwSensor.requiredPermission;
309 bool requiresBodySensorPermission =
310 !strcmp(mRequiredPermission, SENSOR_PERMISSION_BODY_SENSORS);
311 if (android::permission::flags::replace_body_sensor_permission_enabled()) {
312 if (requiresBodySensorPermission) {
313 ALOGE("Sensor %s using deprecated Body Sensor permission", mName.c_str());
314 }
315
316 AppOpsManager appOps;
317 // Lookup to see if an AppOp exists for the permission. If none
318 // does, the default value of -1 is used.
319 mRequiredAppOp = appOps.permissionToOpCode(String16(mRequiredPermission));
320 } else if (requiresBodySensorPermission) {
321 AppOpsManager appOps;
322 mRequiredAppOp = appOps.permissionToOpCode(String16(SENSOR_PERMISSION_BODY_SENSORS));
323 }
324 }
325
326 if (halVersion >= SENSORS_DEVICE_API_VERSION_1_3) {
327 mFlags = static_cast<uint32_t>(hwSensor.flags);
328 } else {
329 // This is an OEM defined sensor on an older HAL. Use minDelay to determine the
330 // reporting mode of the sensor.
331 if (mMinDelay > 0) {
332 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE;
333 } else if (mMinDelay == 0) {
334 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE;
335 } else if (mMinDelay < 0) {
336 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE;
337 }
338 }
339 break;
340 }
341
342 if (halVersion >= SENSORS_DEVICE_API_VERSION_1_3) {
343 // Wake-up flag of HAL 1.3 and above is set here
344 mFlags |= (hwSensor.flags & SENSOR_FLAG_WAKE_UP);
345
346 // Log error if the reporting mode is not as expected, but respect HAL setting.
347 int actualReportingMode = (hwSensor.flags & REPORTING_MODE_MASK) >> REPORTING_MODE_SHIFT;
348 int expectedReportingMode = (mFlags & REPORTING_MODE_MASK) >> REPORTING_MODE_SHIFT;
349 if (actualReportingMode != expectedReportingMode) {
350 ALOGE("Reporting Mode incorrect: sensor %s handle=%#010" PRIx32 " type=%" PRId32 " "
351 "actual=%d expected=%d",
352 mName.c_str(), mHandle, mType, actualReportingMode, expectedReportingMode);
353 }
354 }
355
356 // Feature flags
357 // Set DYNAMIC_SENSOR_MASK and ADDITIONAL_INFO_MASK flag here. Compatible with HAL 1_3.
358 if (halVersion >= SENSORS_DEVICE_API_VERSION_1_3) {
359 mFlags |= hwSensor.flags & (DYNAMIC_SENSOR_MASK | ADDITIONAL_INFO_MASK);
360 }
361 // Set DIRECT_REPORT_MASK and DIRECT_CHANNEL_MASK flags. Compatible with HAL 1_3.
362 if (halVersion >= SENSORS_DEVICE_API_VERSION_1_3) {
363 // only on continuous sensors direct report mode is defined
364 if ((mFlags & REPORTING_MODE_MASK) == SENSOR_FLAG_CONTINUOUS_MODE) {
365 mFlags |= hwSensor.flags
366 & (SENSOR_FLAG_MASK_DIRECT_REPORT | SENSOR_FLAG_MASK_DIRECT_CHANNEL);
367 }
368 }
369 // Set DATA_INJECTION flag here. Defined in HAL 1_4.
370 if (halVersion >= SENSORS_DEVICE_API_VERSION_1_4) {
371 mFlags |= (hwSensor.flags & DATA_INJECTION_MASK);
372 }
373
374 if (mRequiredPermission.length() > 0) {
375 // If the sensor is protected by a permission we need to know if it is
376 // a runtime one to determine whether we can use the permission cache.
377 sp<IBinder> binder = defaultServiceManager()->getService(String16("permission"));
378 if (binder != nullptr) {
379 sp<IPermissionController> permCtrl = interface_cast<IPermissionController>(binder);
380 mRequiredPermissionRuntime = permCtrl->isRuntimePermission(
381 String16(mRequiredPermission));
382 }
383 }
384 }
385
~Sensor()386 Sensor::~Sensor() {
387 }
388
getName() const389 const String8& Sensor::getName() const {
390 return mName;
391 }
392
getVendor() const393 const String8& Sensor::getVendor() const {
394 return mVendor;
395 }
396
getHandle() const397 int32_t Sensor::getHandle() const {
398 return mHandle;
399 }
400
getType() const401 int32_t Sensor::getType() const {
402 return mType;
403 }
404
getMinValue() const405 float Sensor::getMinValue() const {
406 return mMinValue;
407 }
408
getMaxValue() const409 float Sensor::getMaxValue() const {
410 return mMaxValue;
411 }
412
getResolution() const413 float Sensor::getResolution() const {
414 return mResolution;
415 }
416
getPowerUsage() const417 float Sensor::getPowerUsage() const {
418 return mPower;
419 }
420
getMinDelay() const421 int32_t Sensor::getMinDelay() const {
422 return mMinDelay;
423 }
424
getMinDelayNs() const425 nsecs_t Sensor::getMinDelayNs() const {
426 return getMinDelay() * 1000;
427 }
428
getVersion() const429 int32_t Sensor::getVersion() const {
430 return mVersion;
431 }
432
getFifoReservedEventCount() const433 uint32_t Sensor::getFifoReservedEventCount() const {
434 return mFifoReservedEventCount;
435 }
436
getFifoMaxEventCount() const437 uint32_t Sensor::getFifoMaxEventCount() const {
438 return mFifoMaxEventCount;
439 }
440
getStringType() const441 const String8& Sensor::getStringType() const {
442 return mStringType;
443 }
444
getRequiredPermission() const445 const String8& Sensor::getRequiredPermission() const {
446 return mRequiredPermission;
447 }
448
isRequiredPermissionRuntime() const449 bool Sensor::isRequiredPermissionRuntime() const {
450 return mRequiredPermissionRuntime;
451 }
452
getRequiredAppOp() const453 int32_t Sensor::getRequiredAppOp() const {
454 return mRequiredAppOp;
455 }
456
getMaxDelay() const457 int32_t Sensor::getMaxDelay() const {
458 return mMaxDelay;
459 }
460
getFlags() const461 uint32_t Sensor::getFlags() const {
462 return mFlags;
463 }
464
isWakeUpSensor() const465 bool Sensor::isWakeUpSensor() const {
466 return (mFlags & SENSOR_FLAG_WAKE_UP) != 0;
467 }
468
isDynamicSensor() const469 bool Sensor::isDynamicSensor() const {
470 return (mFlags & SENSOR_FLAG_DYNAMIC_SENSOR) != 0;
471 }
472
isDataInjectionSupported() const473 bool Sensor::isDataInjectionSupported() const {
474 return (mFlags & SENSOR_FLAG_DATA_INJECTION) != 0;
475 }
476
hasAdditionalInfo() const477 bool Sensor::hasAdditionalInfo() const {
478 return (mFlags & SENSOR_FLAG_ADDITIONAL_INFO) != 0;
479 }
480
getHighestDirectReportRateLevel() const481 int32_t Sensor::getHighestDirectReportRateLevel() const {
482 return ((mFlags & SENSOR_FLAG_MASK_DIRECT_REPORT) >> SENSOR_FLAG_SHIFT_DIRECT_REPORT);
483 }
484
isDirectChannelTypeSupported(int32_t sharedMemType) const485 bool Sensor::isDirectChannelTypeSupported(int32_t sharedMemType) const {
486 switch (sharedMemType) {
487 case SENSOR_DIRECT_MEM_TYPE_ASHMEM:
488 return mFlags & SENSOR_FLAG_DIRECT_CHANNEL_ASHMEM;
489 case SENSOR_DIRECT_MEM_TYPE_GRALLOC:
490 return mFlags & SENSOR_FLAG_DIRECT_CHANNEL_GRALLOC;
491 default:
492 return false;
493 }
494 }
495
getReportingMode() const496 int32_t Sensor::getReportingMode() const {
497 return ((mFlags & REPORTING_MODE_MASK) >> REPORTING_MODE_SHIFT);
498 }
499
getUuid() const500 const Sensor::uuid_t& Sensor::getUuid() const {
501 return mUuid;
502 }
503
setId(int32_t id)504 void Sensor::setId(int32_t id) {
505 mId = id;
506 }
507
getId() const508 int32_t Sensor::getId() const {
509 return mId;
510 }
511
anonymizeUuid()512 void Sensor::anonymizeUuid() {
513 mUuid.i64[0] = mId;
514 mUuid.i64[1] = 0;
515 }
516
capMinDelayMicros(int32_t cappedMinDelay)517 void Sensor::capMinDelayMicros(int32_t cappedMinDelay) {
518 if (mMinDelay < cappedMinDelay) {
519 mMinDelay = cappedMinDelay;
520 }
521 }
522
capHighestDirectReportRateLevel(int32_t cappedRateLevel)523 void Sensor::capHighestDirectReportRateLevel(int32_t cappedRateLevel) {
524 if (cappedRateLevel < getHighestDirectReportRateLevel()) {
525 mFlags &= ~SENSOR_FLAG_MASK_DIRECT_REPORT;
526 mFlags |= cappedRateLevel << SENSOR_FLAG_SHIFT_DIRECT_REPORT;
527 }
528 }
529
getFlattenedSize() const530 size_t Sensor::getFlattenedSize() const {
531 size_t fixedSize =
532 sizeof(mVersion) + sizeof(mHandle) + sizeof(mType) +
533 sizeof(mMinValue) + sizeof(mMaxValue) + sizeof(mResolution) +
534 sizeof(mPower) + sizeof(mMinDelay) + sizeof(mFifoMaxEventCount) +
535 sizeof(mFifoMaxEventCount) + sizeof(mRequiredPermissionRuntime) +
536 sizeof(mRequiredAppOp) + sizeof(mMaxDelay) + sizeof(mFlags) +
537 sizeof(mUuid) + sizeof(mId);
538
539 size_t variableSize =
540 sizeof(uint32_t) + FlattenableUtils::align<4>(mName.length()) +
541 sizeof(uint32_t) + FlattenableUtils::align<4>(mVendor.length()) +
542 sizeof(uint32_t) + FlattenableUtils::align<4>(mStringType.length()) +
543 sizeof(uint32_t) + FlattenableUtils::align<4>(mRequiredPermission.length());
544
545 return fixedSize + variableSize;
546 }
547
flatten(void * buffer,size_t size) const548 status_t Sensor::flatten(void* buffer, size_t size) const {
549 if (size < getFlattenedSize()) {
550 return NO_MEMORY;
551 }
552
553 flattenString8(buffer, size, mName);
554 flattenString8(buffer, size, mVendor);
555 FlattenableUtils::write(buffer, size, mVersion);
556 FlattenableUtils::write(buffer, size, mHandle);
557 FlattenableUtils::write(buffer, size, mType);
558 FlattenableUtils::write(buffer, size, mMinValue);
559 FlattenableUtils::write(buffer, size, mMaxValue);
560 FlattenableUtils::write(buffer, size, mResolution);
561 FlattenableUtils::write(buffer, size, mPower);
562 FlattenableUtils::write(buffer, size, mMinDelay);
563 FlattenableUtils::write(buffer, size, mFifoReservedEventCount);
564 FlattenableUtils::write(buffer, size, mFifoMaxEventCount);
565 flattenString8(buffer, size, mStringType);
566 flattenString8(buffer, size, mRequiredPermission);
567 FlattenableUtils::write(buffer, size, mRequiredPermissionRuntime);
568 FlattenableUtils::write(buffer, size, mRequiredAppOp);
569 FlattenableUtils::write(buffer, size, mMaxDelay);
570 FlattenableUtils::write(buffer, size, mFlags);
571 FlattenableUtils::write(buffer, size, mUuid);
572 FlattenableUtils::write(buffer, size, mId);
573 return NO_ERROR;
574 }
575
unflatten(void const * buffer,size_t size)576 status_t Sensor::unflatten(void const* buffer, size_t size) {
577 if (!unflattenString8(buffer, size, mName)) {
578 return NO_MEMORY;
579 }
580 if (!unflattenString8(buffer, size, mVendor)) {
581 return NO_MEMORY;
582 }
583
584 size_t fixedSize1 =
585 sizeof(mVersion) + sizeof(mHandle) + sizeof(mType) + sizeof(mMinValue) +
586 sizeof(mMaxValue) + sizeof(mResolution) + sizeof(mPower) + sizeof(mMinDelay) +
587 sizeof(mFifoMaxEventCount) + sizeof(mFifoMaxEventCount);
588 if (size < fixedSize1) {
589 return NO_MEMORY;
590 }
591
592 FlattenableUtils::read(buffer, size, mVersion);
593 FlattenableUtils::read(buffer, size, mHandle);
594 FlattenableUtils::read(buffer, size, mType);
595 FlattenableUtils::read(buffer, size, mMinValue);
596 FlattenableUtils::read(buffer, size, mMaxValue);
597 FlattenableUtils::read(buffer, size, mResolution);
598 FlattenableUtils::read(buffer, size, mPower);
599 FlattenableUtils::read(buffer, size, mMinDelay);
600 FlattenableUtils::read(buffer, size, mFifoReservedEventCount);
601 FlattenableUtils::read(buffer, size, mFifoMaxEventCount);
602
603 if (!unflattenString8(buffer, size, mStringType)) {
604 return NO_MEMORY;
605 }
606 if (!unflattenString8(buffer, size, mRequiredPermission)) {
607 return NO_MEMORY;
608 }
609
610 size_t fixedSize2 =
611 sizeof(mRequiredPermissionRuntime) + sizeof(mRequiredAppOp) + sizeof(mMaxDelay) +
612 sizeof(mFlags) + sizeof(mUuid) + sizeof(mId);
613 if (size < fixedSize2) {
614 return NO_MEMORY;
615 }
616
617 FlattenableUtils::read(buffer, size, mRequiredPermissionRuntime);
618 FlattenableUtils::read(buffer, size, mRequiredAppOp);
619 FlattenableUtils::read(buffer, size, mMaxDelay);
620 FlattenableUtils::read(buffer, size, mFlags);
621 FlattenableUtils::read(buffer, size, mUuid);
622 FlattenableUtils::read(buffer, size, mId);
623 return NO_ERROR;
624 }
625
flattenString8(void * & buffer,size_t & size,const String8 & string8)626 void Sensor::flattenString8(void*& buffer, size_t& size,
627 const String8& string8) {
628 uint32_t len = static_cast<uint32_t>(string8.length());
629 FlattenableUtils::write(buffer, size, len);
630 memcpy(static_cast<char*>(buffer), string8.c_str(), len);
631 FlattenableUtils::advance(buffer, size, len);
632 size -= FlattenableUtils::align<4>(buffer);
633 }
634
unflattenString8(void const * & buffer,size_t & size,String8 & outputString8)635 bool Sensor::unflattenString8(void const*& buffer, size_t& size, String8& outputString8) {
636 uint32_t len;
637 if (size < sizeof(len)) {
638 return false;
639 }
640 FlattenableUtils::read(buffer, size, len);
641 if (size < len) {
642 return false;
643 }
644 outputString8 = String8(static_cast<char const*>(buffer), len);
645
646 if (size < FlattenableUtils::align<4>(len)) {
647 ALOGE("Malformed Sensor String8 field. Should be in a 4-byte aligned buffer but is not.");
648 return false;
649 }
650 FlattenableUtils::advance(buffer, size, FlattenableUtils::align<4>(len));
651
652 return true;
653 }
654
655 // ----------------------------------------------------------------------------
656 }; // namespace android
657