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 25 // ---------------------------------------------------------------------------- 26 namespace android { 27 // ---------------------------------------------------------------------------- 28 29 Sensor::Sensor(const char * name) : 30 mName(name), mHandle(0), mType(0), 31 mMinValue(0), mMaxValue(0), mResolution(0), 32 mPower(0), mMinDelay(0), mVersion(0), mFifoReservedEventCount(0), 33 mFifoMaxEventCount(0), mRequiredAppOp(-1), 34 mMaxDelay(0), mFlags(0) { 35 } 36 37 Sensor::Sensor(struct sensor_t const* hwSensor, int halVersion) : 38 Sensor(*hwSensor, uuid_t(), halVersion) { 39 } 40 41 Sensor::Sensor(struct sensor_t const& hwSensor, const uuid_t& uuid, int halVersion) : 42 Sensor("") { 43 mName = hwSensor.name; 44 mVendor = hwSensor.vendor; 45 mVersion = hwSensor.version; 46 mHandle = hwSensor.handle; 47 mType = hwSensor.type; 48 mMinValue = 0; // FIXME: minValue 49 mMaxValue = hwSensor.maxRange; // FIXME: maxValue 50 mResolution = hwSensor.resolution; 51 mPower = hwSensor.power; 52 mMinDelay = hwSensor.minDelay; 53 mFlags = 0; 54 mUuid = uuid; 55 56 // Set fifo event count zero for older devices which do not support batching. Fused 57 // sensors also have their fifo counts set to zero. 58 if (halVersion > SENSORS_DEVICE_API_VERSION_1_0) { 59 mFifoReservedEventCount = hwSensor.fifoReservedEventCount; 60 mFifoMaxEventCount = hwSensor.fifoMaxEventCount; 61 } else { 62 mFifoReservedEventCount = 0; 63 mFifoMaxEventCount = 0; 64 } 65 66 if (halVersion >= SENSORS_DEVICE_API_VERSION_1_3) { 67 if (hwSensor.maxDelay > INT_MAX) { 68 // Max delay is declared as a 64 bit integer for 64 bit architectures. But it should 69 // always fit in a 32 bit integer, log error and cap it to INT_MAX. 70 ALOGE("Sensor maxDelay overflow error %s %" PRId64, mName.string(), 71 static_cast<int64_t>(hwSensor.maxDelay)); 72 mMaxDelay = INT_MAX; 73 } else { 74 mMaxDelay = static_cast<int32_t>(hwSensor.maxDelay); 75 } 76 } else { 77 // For older hals set maxDelay to 0. 78 mMaxDelay = 0; 79 } 80 81 // Ensure existing sensors have correct string type, required permissions and reporting mode. 82 // Set reportingMode for all android defined sensor types, set wake-up flag only for proximity 83 // sensor, significant motion, tilt, pick_up gesture, wake gesture and glance gesture on older 84 // HALs. Newer HALs can define both wake-up and non wake-up proximity sensors. 85 // All the OEM defined defined sensors have flags set to whatever is provided by the HAL. 86 switch (mType) { 87 case SENSOR_TYPE_ACCELEROMETER: 88 mStringType = SENSOR_STRING_TYPE_ACCELEROMETER; 89 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE; 90 break; 91 case SENSOR_TYPE_AMBIENT_TEMPERATURE: 92 mStringType = SENSOR_STRING_TYPE_AMBIENT_TEMPERATURE; 93 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE; 94 break; 95 case SENSOR_TYPE_GAME_ROTATION_VECTOR: 96 mStringType = SENSOR_STRING_TYPE_GAME_ROTATION_VECTOR; 97 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE; 98 break; 99 case SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR: 100 mStringType = SENSOR_STRING_TYPE_GEOMAGNETIC_ROTATION_VECTOR; 101 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE; 102 break; 103 case SENSOR_TYPE_GRAVITY: 104 mStringType = SENSOR_STRING_TYPE_GRAVITY; 105 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE; 106 break; 107 case SENSOR_TYPE_GYROSCOPE: 108 mStringType = SENSOR_STRING_TYPE_GYROSCOPE; 109 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE; 110 break; 111 case SENSOR_TYPE_GYROSCOPE_UNCALIBRATED: 112 mStringType = SENSOR_STRING_TYPE_GYROSCOPE_UNCALIBRATED; 113 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE; 114 break; 115 case SENSOR_TYPE_HEART_RATE: { 116 mStringType = SENSOR_STRING_TYPE_HEART_RATE; 117 mRequiredPermission = SENSOR_PERMISSION_BODY_SENSORS; 118 AppOpsManager appOps; 119 mRequiredAppOp = appOps.permissionToOpCode(String16(SENSOR_PERMISSION_BODY_SENSORS)); 120 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE; 121 } break; 122 case SENSOR_TYPE_LIGHT: 123 mStringType = SENSOR_STRING_TYPE_LIGHT; 124 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE; 125 break; 126 case SENSOR_TYPE_LINEAR_ACCELERATION: 127 mStringType = SENSOR_STRING_TYPE_LINEAR_ACCELERATION; 128 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE; 129 break; 130 case SENSOR_TYPE_MAGNETIC_FIELD: 131 mStringType = SENSOR_STRING_TYPE_MAGNETIC_FIELD; 132 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE; 133 break; 134 case SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED: 135 mStringType = SENSOR_STRING_TYPE_MAGNETIC_FIELD_UNCALIBRATED; 136 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE; 137 break; 138 case SENSOR_TYPE_ORIENTATION: 139 mStringType = SENSOR_STRING_TYPE_ORIENTATION; 140 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE; 141 break; 142 case SENSOR_TYPE_PRESSURE: 143 mStringType = SENSOR_STRING_TYPE_PRESSURE; 144 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE; 145 break; 146 case SENSOR_TYPE_PROXIMITY: 147 mStringType = SENSOR_STRING_TYPE_PROXIMITY; 148 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE; 149 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) { 150 mFlags |= SENSOR_FLAG_WAKE_UP; 151 } 152 break; 153 case SENSOR_TYPE_RELATIVE_HUMIDITY: 154 mStringType = SENSOR_STRING_TYPE_RELATIVE_HUMIDITY; 155 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE; 156 break; 157 case SENSOR_TYPE_ROTATION_VECTOR: 158 mStringType = SENSOR_STRING_TYPE_ROTATION_VECTOR; 159 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE; 160 break; 161 case SENSOR_TYPE_SIGNIFICANT_MOTION: 162 mStringType = SENSOR_STRING_TYPE_SIGNIFICANT_MOTION; 163 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE; 164 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) { 165 mFlags |= SENSOR_FLAG_WAKE_UP; 166 } 167 break; 168 case SENSOR_TYPE_STEP_COUNTER: 169 mStringType = SENSOR_STRING_TYPE_STEP_COUNTER; 170 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE; 171 break; 172 case SENSOR_TYPE_STEP_DETECTOR: 173 mStringType = SENSOR_STRING_TYPE_STEP_DETECTOR; 174 mFlags |= SENSOR_FLAG_SPECIAL_REPORTING_MODE; 175 break; 176 case SENSOR_TYPE_TEMPERATURE: 177 mStringType = SENSOR_STRING_TYPE_TEMPERATURE; 178 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE; 179 break; 180 case SENSOR_TYPE_TILT_DETECTOR: 181 mStringType = SENSOR_STRING_TYPE_TILT_DETECTOR; 182 mFlags |= SENSOR_FLAG_SPECIAL_REPORTING_MODE; 183 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) { 184 mFlags |= SENSOR_FLAG_WAKE_UP; 185 } 186 break; 187 case SENSOR_TYPE_WAKE_GESTURE: 188 mStringType = SENSOR_STRING_TYPE_WAKE_GESTURE; 189 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE; 190 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) { 191 mFlags |= SENSOR_FLAG_WAKE_UP; 192 } 193 break; 194 case SENSOR_TYPE_GLANCE_GESTURE: 195 mStringType = SENSOR_STRING_TYPE_GLANCE_GESTURE; 196 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE; 197 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) { 198 mFlags |= SENSOR_FLAG_WAKE_UP; 199 } 200 break; 201 case SENSOR_TYPE_PICK_UP_GESTURE: 202 mStringType = SENSOR_STRING_TYPE_PICK_UP_GESTURE; 203 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE; 204 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) { 205 mFlags |= SENSOR_FLAG_WAKE_UP; 206 } 207 break; 208 case SENSOR_TYPE_LOW_LATENCY_OFFBODY_DETECT: 209 mStringType = SENSOR_STRING_TYPE_LOW_LATENCY_OFFBODY_DETECT; 210 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE; 211 break; 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; 217 } 218 break; 219 case SENSOR_TYPE_DYNAMIC_SENSOR_META: 220 mStringType = SENSOR_STRING_TYPE_DYNAMIC_SENSOR_META; 221 mFlags |= SENSOR_FLAG_SPECIAL_REPORTING_MODE; // special trigger 222 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) { 223 mFlags |= SENSOR_FLAG_WAKE_UP; 224 } 225 break; 226 case SENSOR_TYPE_POSE_6DOF: 227 mStringType = SENSOR_STRING_TYPE_POSE_6DOF; 228 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE; 229 break; 230 case SENSOR_TYPE_STATIONARY_DETECT: 231 mStringType = SENSOR_STRING_TYPE_STATIONARY_DETECT; 232 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE; 233 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) { 234 mFlags |= SENSOR_FLAG_WAKE_UP; 235 } 236 break; 237 case SENSOR_TYPE_MOTION_DETECT: 238 mStringType = SENSOR_STRING_TYPE_MOTION_DETECT; 239 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE; 240 if (halVersion < SENSORS_DEVICE_API_VERSION_1_3) { 241 mFlags |= SENSOR_FLAG_WAKE_UP; 242 } 243 break; 244 case SENSOR_TYPE_HEART_BEAT: 245 mStringType = SENSOR_STRING_TYPE_HEART_BEAT; 246 mFlags |= SENSOR_FLAG_SPECIAL_REPORTING_MODE; 247 break; 248 249 // TODO: Placeholder for LLOB sensor type 250 251 252 case SENSOR_TYPE_ACCELEROMETER_UNCALIBRATED: 253 mStringType = SENSOR_STRING_TYPE_ACCELEROMETER_UNCALIBRATED; 254 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE; 255 break; 256 default: 257 // Only pipe the stringType, requiredPermission and flags for custom sensors. 258 if (halVersion > SENSORS_DEVICE_API_VERSION_1_0 && hwSensor.stringType) { 259 mStringType = hwSensor.stringType; 260 } 261 if (halVersion > SENSORS_DEVICE_API_VERSION_1_0 && hwSensor.requiredPermission) { 262 mRequiredPermission = hwSensor.requiredPermission; 263 if (!strcmp(mRequiredPermission, SENSOR_PERMISSION_BODY_SENSORS)) { 264 AppOpsManager appOps; 265 mRequiredAppOp = appOps.permissionToOpCode(String16(SENSOR_PERMISSION_BODY_SENSORS)); 266 } 267 } 268 269 if (halVersion >= SENSORS_DEVICE_API_VERSION_1_3) { 270 mFlags = static_cast<uint32_t>(hwSensor.flags); 271 } else { 272 // This is an OEM defined sensor on an older HAL. Use minDelay to determine the 273 // reporting mode of the sensor. 274 if (mMinDelay > 0) { 275 mFlags |= SENSOR_FLAG_CONTINUOUS_MODE; 276 } else if (mMinDelay == 0) { 277 mFlags |= SENSOR_FLAG_ON_CHANGE_MODE; 278 } else if (mMinDelay < 0) { 279 mFlags |= SENSOR_FLAG_ONE_SHOT_MODE; 280 } 281 } 282 break; 283 } 284 285 if (halVersion >= SENSORS_DEVICE_API_VERSION_1_3) { 286 // Wake-up flag of HAL 1.3 and above is set here 287 mFlags |= (hwSensor.flags & SENSOR_FLAG_WAKE_UP); 288 289 // Log error if the reporting mode is not as expected, but respect HAL setting. 290 int actualReportingMode = (hwSensor.flags & REPORTING_MODE_MASK) >> REPORTING_MODE_SHIFT; 291 int expectedReportingMode = (mFlags & REPORTING_MODE_MASK) >> REPORTING_MODE_SHIFT; 292 if (actualReportingMode != expectedReportingMode) { 293 ALOGE("Reporting Mode incorrect: sensor %s handle=%#010" PRIx32 " type=%" PRId32 " " 294 "actual=%d expected=%d", 295 mName.string(), mHandle, mType, actualReportingMode, expectedReportingMode); 296 } 297 } 298 299 // Feature flags 300 // Set DYNAMIC_SENSOR_MASK and ADDITIONAL_INFO_MASK flag here. Compatible with HAL 1_3. 301 if (halVersion >= SENSORS_DEVICE_API_VERSION_1_3) { 302 mFlags |= hwSensor.flags & (DYNAMIC_SENSOR_MASK | ADDITIONAL_INFO_MASK); 303 } 304 // Set DIRECT_REPORT_MASK and DIRECT_CHANNEL_MASK flags. Compatible with HAL 1_3. 305 if (halVersion >= SENSORS_DEVICE_API_VERSION_1_3) { 306 // only on continuous sensors direct report mode is defined 307 if ((mFlags & REPORTING_MODE_MASK) == SENSOR_FLAG_CONTINUOUS_MODE) { 308 mFlags |= hwSensor.flags 309 & (SENSOR_FLAG_MASK_DIRECT_REPORT | SENSOR_FLAG_MASK_DIRECT_CHANNEL); 310 } 311 } 312 // Set DATA_INJECTION flag here. Defined in HAL 1_4. 313 if (halVersion >= SENSORS_DEVICE_API_VERSION_1_4) { 314 mFlags |= (hwSensor.flags & DATA_INJECTION_MASK); 315 } 316 317 if (mRequiredPermission.length() > 0) { 318 // If the sensor is protected by a permission we need to know if it is 319 // a runtime one to determine whether we can use the permission cache. 320 sp<IBinder> binder = defaultServiceManager()->getService(String16("permission")); 321 if (binder != 0) { 322 sp<IPermissionController> permCtrl = interface_cast<IPermissionController>(binder); 323 mRequiredPermissionRuntime = permCtrl->isRuntimePermission( 324 String16(mRequiredPermission)); 325 } 326 } 327 } 328 329 Sensor::~Sensor() { 330 } 331 332 const String8& Sensor::getName() const { 333 return mName; 334 } 335 336 const String8& Sensor::getVendor() const { 337 return mVendor; 338 } 339 340 int32_t Sensor::getHandle() const { 341 return mHandle; 342 } 343 344 int32_t Sensor::getType() const { 345 return mType; 346 } 347 348 float Sensor::getMinValue() const { 349 return mMinValue; 350 } 351 352 float Sensor::getMaxValue() const { 353 return mMaxValue; 354 } 355 356 float Sensor::getResolution() const { 357 return mResolution; 358 } 359 360 float Sensor::getPowerUsage() const { 361 return mPower; 362 } 363 364 int32_t Sensor::getMinDelay() const { 365 return mMinDelay; 366 } 367 368 nsecs_t Sensor::getMinDelayNs() const { 369 return getMinDelay() * 1000; 370 } 371 372 int32_t Sensor::getVersion() const { 373 return mVersion; 374 } 375 376 uint32_t Sensor::getFifoReservedEventCount() const { 377 return mFifoReservedEventCount; 378 } 379 380 uint32_t Sensor::getFifoMaxEventCount() const { 381 return mFifoMaxEventCount; 382 } 383 384 const String8& Sensor::getStringType() const { 385 return mStringType; 386 } 387 388 const String8& Sensor::getRequiredPermission() const { 389 return mRequiredPermission; 390 } 391 392 bool Sensor::isRequiredPermissionRuntime() const { 393 return mRequiredPermissionRuntime; 394 } 395 396 int32_t Sensor::getRequiredAppOp() const { 397 return mRequiredAppOp; 398 } 399 400 int32_t Sensor::getMaxDelay() const { 401 return mMaxDelay; 402 } 403 404 uint32_t Sensor::getFlags() const { 405 return mFlags; 406 } 407 408 bool Sensor::isWakeUpSensor() const { 409 return (mFlags & SENSOR_FLAG_WAKE_UP) != 0; 410 } 411 412 bool Sensor::isDynamicSensor() const { 413 return (mFlags & SENSOR_FLAG_DYNAMIC_SENSOR) != 0; 414 } 415 416 bool Sensor::isDataInjectionSupported() const { 417 return (mFlags & SENSOR_FLAG_DATA_INJECTION) != 0; 418 } 419 420 bool Sensor::hasAdditionalInfo() const { 421 return (mFlags & SENSOR_FLAG_ADDITIONAL_INFO) != 0; 422 } 423 424 int32_t Sensor::getHighestDirectReportRateLevel() const { 425 return ((mFlags & SENSOR_FLAG_MASK_DIRECT_REPORT) >> SENSOR_FLAG_SHIFT_DIRECT_REPORT); 426 } 427 428 bool Sensor::isDirectChannelTypeSupported(int32_t sharedMemType) const { 429 switch (sharedMemType) { 430 case SENSOR_DIRECT_MEM_TYPE_ASHMEM: 431 return mFlags & SENSOR_FLAG_DIRECT_CHANNEL_ASHMEM; 432 case SENSOR_DIRECT_MEM_TYPE_GRALLOC: 433 return mFlags & SENSOR_FLAG_DIRECT_CHANNEL_GRALLOC; 434 default: 435 return false; 436 } 437 } 438 439 int32_t Sensor::getReportingMode() const { 440 return ((mFlags & REPORTING_MODE_MASK) >> REPORTING_MODE_SHIFT); 441 } 442 443 const Sensor::uuid_t& Sensor::getUuid() const { 444 return mUuid; 445 } 446 447 void Sensor::setId(int32_t id) { 448 mUuid.i64[0] = id; 449 mUuid.i64[1] = 0; 450 } 451 452 int32_t Sensor::getId() const { 453 return int32_t(mUuid.i64[0]); 454 } 455 456 size_t Sensor::getFlattenedSize() const { 457 size_t fixedSize = 458 sizeof(mVersion) + sizeof(mHandle) + sizeof(mType) + 459 sizeof(mMinValue) + sizeof(mMaxValue) + sizeof(mResolution) + 460 sizeof(mPower) + sizeof(mMinDelay) + sizeof(mFifoMaxEventCount) + 461 sizeof(mFifoMaxEventCount) + sizeof(mRequiredPermissionRuntime) + 462 sizeof(mRequiredAppOp) + sizeof(mMaxDelay) + sizeof(mFlags) + sizeof(mUuid); 463 464 size_t variableSize = 465 sizeof(uint32_t) + FlattenableUtils::align<4>(mName.length()) + 466 sizeof(uint32_t) + FlattenableUtils::align<4>(mVendor.length()) + 467 sizeof(uint32_t) + FlattenableUtils::align<4>(mStringType.length()) + 468 sizeof(uint32_t) + FlattenableUtils::align<4>(mRequiredPermission.length()); 469 470 return fixedSize + variableSize; 471 } 472 473 status_t Sensor::flatten(void* buffer, size_t size) const { 474 if (size < getFlattenedSize()) { 475 return NO_MEMORY; 476 } 477 478 flattenString8(buffer, size, mName); 479 flattenString8(buffer, size, mVendor); 480 FlattenableUtils::write(buffer, size, mVersion); 481 FlattenableUtils::write(buffer, size, mHandle); 482 FlattenableUtils::write(buffer, size, mType); 483 FlattenableUtils::write(buffer, size, mMinValue); 484 FlattenableUtils::write(buffer, size, mMaxValue); 485 FlattenableUtils::write(buffer, size, mResolution); 486 FlattenableUtils::write(buffer, size, mPower); 487 FlattenableUtils::write(buffer, size, mMinDelay); 488 FlattenableUtils::write(buffer, size, mFifoReservedEventCount); 489 FlattenableUtils::write(buffer, size, mFifoMaxEventCount); 490 flattenString8(buffer, size, mStringType); 491 flattenString8(buffer, size, mRequiredPermission); 492 FlattenableUtils::write(buffer, size, mRequiredPermissionRuntime); 493 FlattenableUtils::write(buffer, size, mRequiredAppOp); 494 FlattenableUtils::write(buffer, size, mMaxDelay); 495 FlattenableUtils::write(buffer, size, mFlags); 496 if (mUuid.i64[1] != 0) { 497 // We should never hit this case with our current API, but we 498 // could via a careless API change. If that happens, 499 // this code will keep us from leaking our UUID (while probably 500 // breaking dynamic sensors). See b/29547335. 501 ALOGW("Sensor with UUID being flattened; sending 0. Expect " 502 "bad dynamic sensor behavior"); 503 uuid_t tmpUuid; // default constructor makes this 0. 504 FlattenableUtils::write(buffer, size, tmpUuid); 505 } else { 506 FlattenableUtils::write(buffer, size, mUuid); 507 } 508 return NO_ERROR; 509 } 510 511 status_t Sensor::unflatten(void const* buffer, size_t size) { 512 if (!unflattenString8(buffer, size, mName)) { 513 return NO_MEMORY; 514 } 515 if (!unflattenString8(buffer, size, mVendor)) { 516 return NO_MEMORY; 517 } 518 519 size_t fixedSize1 = 520 sizeof(mVersion) + sizeof(mHandle) + sizeof(mType) + sizeof(mMinValue) + 521 sizeof(mMaxValue) + sizeof(mResolution) + sizeof(mPower) + sizeof(mMinDelay) + 522 sizeof(mFifoMaxEventCount) + sizeof(mFifoMaxEventCount); 523 if (size < fixedSize1) { 524 return NO_MEMORY; 525 } 526 527 FlattenableUtils::read(buffer, size, mVersion); 528 FlattenableUtils::read(buffer, size, mHandle); 529 FlattenableUtils::read(buffer, size, mType); 530 FlattenableUtils::read(buffer, size, mMinValue); 531 FlattenableUtils::read(buffer, size, mMaxValue); 532 FlattenableUtils::read(buffer, size, mResolution); 533 FlattenableUtils::read(buffer, size, mPower); 534 FlattenableUtils::read(buffer, size, mMinDelay); 535 FlattenableUtils::read(buffer, size, mFifoReservedEventCount); 536 FlattenableUtils::read(buffer, size, mFifoMaxEventCount); 537 538 if (!unflattenString8(buffer, size, mStringType)) { 539 return NO_MEMORY; 540 } 541 if (!unflattenString8(buffer, size, mRequiredPermission)) { 542 return NO_MEMORY; 543 } 544 545 size_t fixedSize2 = 546 sizeof(mRequiredPermissionRuntime) + sizeof(mRequiredAppOp) + sizeof(mMaxDelay) + 547 sizeof(mFlags) + sizeof(mUuid); 548 if (size < fixedSize2) { 549 return NO_MEMORY; 550 } 551 552 FlattenableUtils::read(buffer, size, mRequiredPermissionRuntime); 553 FlattenableUtils::read(buffer, size, mRequiredAppOp); 554 FlattenableUtils::read(buffer, size, mMaxDelay); 555 FlattenableUtils::read(buffer, size, mFlags); 556 FlattenableUtils::read(buffer, size, mUuid); 557 return NO_ERROR; 558 } 559 560 void Sensor::flattenString8(void*& buffer, size_t& size, 561 const String8& string8) { 562 uint32_t len = static_cast<uint32_t>(string8.length()); 563 FlattenableUtils::write(buffer, size, len); 564 memcpy(static_cast<char*>(buffer), string8.string(), len); 565 FlattenableUtils::advance(buffer, size, FlattenableUtils::align<4>(len)); 566 } 567 568 bool Sensor::unflattenString8(void const*& buffer, size_t& size, String8& outputString8) { 569 uint32_t len; 570 if (size < sizeof(len)) { 571 return false; 572 } 573 FlattenableUtils::read(buffer, size, len); 574 if (size < len) { 575 return false; 576 } 577 outputString8.setTo(static_cast<char const*>(buffer), len); 578 FlattenableUtils::advance(buffer, size, FlattenableUtils::align<4>(len)); 579 return true; 580 } 581 582 // ---------------------------------------------------------------------------- 583 }; // namespace android 584
