| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "SensorDevice.h" |
| #include "SensorDirectConnection.h" |
| #include <hardware/sensors.h> |
| |
| #define UNUSED(x) (void)(x) |
| |
| namespace android { |
| |
| SensorService::SensorDirectConnection::SensorDirectConnection(const sp<SensorService>& service, |
| uid_t uid, const sensors_direct_mem_t *mem, int32_t halChannelHandle, |
| const String16& opPackageName) |
| : mService(service), mUid(uid), mMem(*mem), |
| mHalChannelHandle(halChannelHandle), |
| mOpPackageName(opPackageName), mDestroyed(false) { |
| ALOGD_IF(DEBUG_CONNECTIONS, "Created SensorDirectConnection"); |
| } |
| |
| SensorService::SensorDirectConnection::~SensorDirectConnection() { |
| ALOGD_IF(DEBUG_CONNECTIONS, "~SensorDirectConnection %p", this); |
| destroy(); |
| } |
| |
| void SensorService::SensorDirectConnection::destroy() { |
| Mutex::Autolock _l(mDestroyLock); |
| // destroy once only |
| if (mDestroyed) { |
| return; |
| } |
| |
| stopAll(); |
| mService->cleanupConnection(this); |
| if (mMem.handle != nullptr) { |
| native_handle_close(mMem.handle); |
| native_handle_delete(const_cast<struct native_handle*>(mMem.handle)); |
| } |
| mDestroyed = true; |
| } |
| |
| void SensorService::SensorDirectConnection::onFirstRef() { |
| } |
| |
| void SensorService::SensorDirectConnection::dump(String8& result) const { |
| Mutex::Autolock _l(mConnectionLock); |
| result.appendFormat("\tPackage %s, HAL channel handle %d, total sensor activated %zu\n", |
| String8(mOpPackageName).string(), getHalChannelHandle(), mActivated.size()); |
| for (auto &i : mActivated) { |
| result.appendFormat("\t\tSensor %#08x, rate %d\n", i.first, i.second); |
| } |
| } |
| |
| sp<BitTube> SensorService::SensorDirectConnection::getSensorChannel() const { |
| return nullptr; |
| } |
| |
| status_t SensorService::SensorDirectConnection::enableDisable( |
| int handle, bool enabled, nsecs_t samplingPeriodNs, nsecs_t maxBatchReportLatencyNs, |
| int reservedFlags) { |
| // SensorDirectConnection does not support enableDisable, parameters not used |
| UNUSED(handle); |
| UNUSED(enabled); |
| UNUSED(samplingPeriodNs); |
| UNUSED(maxBatchReportLatencyNs); |
| UNUSED(reservedFlags); |
| return INVALID_OPERATION; |
| } |
| |
| status_t SensorService::SensorDirectConnection::setEventRate( |
| int handle, nsecs_t samplingPeriodNs) { |
| // SensorDirectConnection does not support setEventRate, parameters not used |
| UNUSED(handle); |
| UNUSED(samplingPeriodNs); |
| return INVALID_OPERATION; |
| } |
| |
| status_t SensorService::SensorDirectConnection::flush() { |
| // SensorDirectConnection does not support flush |
| return INVALID_OPERATION; |
| } |
| |
| int32_t SensorService::SensorDirectConnection::configureChannel(int handle, int rateLevel) { |
| |
| if (handle == -1 && rateLevel == SENSOR_DIRECT_RATE_STOP) { |
| stopAll(); |
| return NO_ERROR; |
| } |
| |
| if (mService->isOperationRestricted(mOpPackageName)) { |
| return PERMISSION_DENIED; |
| } |
| |
| sp<SensorInterface> si = mService->getSensorInterfaceFromHandle(handle); |
| if (si == nullptr) { |
| return NAME_NOT_FOUND; |
| } |
| |
| const Sensor& s = si->getSensor(); |
| if (!SensorService::canAccessSensor(s, "config direct channel", mOpPackageName)) { |
| return PERMISSION_DENIED; |
| } |
| |
| if (s.getHighestDirectReportRateLevel() == 0 |
| || rateLevel > s.getHighestDirectReportRateLevel() |
| || !s.isDirectChannelTypeSupported(mMem.type)) { |
| return INVALID_OPERATION; |
| } |
| |
| struct sensors_direct_cfg_t config = { |
| .rate_level = rateLevel |
| }; |
| |
| Mutex::Autolock _l(mConnectionLock); |
| SensorDevice& dev(SensorDevice::getInstance()); |
| int ret = dev.configureDirectChannel(handle, getHalChannelHandle(), &config); |
| |
| if (rateLevel == SENSOR_DIRECT_RATE_STOP) { |
| if (ret == NO_ERROR) { |
| mActivated.erase(handle); |
| } else if (ret > 0) { |
| ret = UNKNOWN_ERROR; |
| } |
| } else { |
| if (ret > 0) { |
| mActivated[handle] = rateLevel; |
| } |
| } |
| |
| return ret; |
| } |
| |
| void SensorService::SensorDirectConnection::stopAll(bool backupRecord) { |
| |
| struct sensors_direct_cfg_t config = { |
| .rate_level = SENSOR_DIRECT_RATE_STOP |
| }; |
| |
| Mutex::Autolock _l(mConnectionLock); |
| SensorDevice& dev(SensorDevice::getInstance()); |
| for (auto &i : mActivated) { |
| dev.configureDirectChannel(i.first, getHalChannelHandle(), &config); |
| } |
| |
| if (backupRecord && mActivatedBackup.empty()) { |
| mActivatedBackup = mActivated; |
| } |
| mActivated.clear(); |
| } |
| |
| void SensorService::SensorDirectConnection::recoverAll() { |
| stopAll(false); |
| |
| Mutex::Autolock _l(mConnectionLock); |
| SensorDevice& dev(SensorDevice::getInstance()); |
| |
| // recover list of report from backup |
| mActivated = mActivatedBackup; |
| mActivatedBackup.clear(); |
| |
| // re-enable them |
| for (auto &i : mActivated) { |
| struct sensors_direct_cfg_t config = { |
| .rate_level = i.second |
| }; |
| dev.configureDirectChannel(i.first, getHalChannelHandle(), &config); |
| } |
| } |
| |
| int32_t SensorService::SensorDirectConnection::getHalChannelHandle() const { |
| return mHalChannelHandle; |
| } |
| |
| bool SensorService::SensorDirectConnection::isEquivalent(const sensors_direct_mem_t *mem) const { |
| bool ret = false; |
| |
| if (mMem.type == mem->type) { |
| switch (mMem.type) { |
| case SENSOR_DIRECT_MEM_TYPE_ASHMEM: { |
| // there is no known method to test if two ashmem fds are equivalent besides |
| // trivially comparing the fd values (ino number from fstat() are always the |
| // same, pointing to "/dev/ashmem"). |
| int fd1 = mMem.handle->data[0]; |
| int fd2 = mem->handle->data[0]; |
| ret = (fd1 == fd2); |
| break; |
| } |
| case SENSOR_DIRECT_MEM_TYPE_GRALLOC: |
| // there is no known method to test if two gralloc handle are equivalent |
| ret = false; |
| break; |
| default: |
| // should never happen |
| ALOGE("Unexpected mem type %d", mMem.type); |
| ret = true; |
| break; |
| } |
| } |
| return ret; |
| } |
| |
| } // namespace android |
| |