Peng Xu | e36e347 | 2016-11-03 11:57:10 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (C) 2016 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 "SensorDevice.h" |
| 18 | #include "SensorDirectConnection.h" |
| 19 | #include <hardware/sensors.h> |
| 20 | |
| 21 | #include <sys/stat.h> |
| 22 | |
| 23 | #define UNUSED(x) (void)(x) |
| 24 | |
| 25 | namespace android { |
| 26 | |
| 27 | SensorService::SensorDirectConnection::SensorDirectConnection(const sp<SensorService>& service, |
| 28 | uid_t uid, const sensors_direct_mem_t *mem, int32_t halChannelHandle, |
| 29 | const String16& opPackageName) |
| 30 | : mService(service), mUid(uid), mMem(*mem), |
| 31 | mHalChannelHandle(halChannelHandle), |
| 32 | mOpPackageName(opPackageName) { |
| 33 | ALOGD_IF(DEBUG_CONNECTIONS, "Created SensorDirectConnection"); |
| 34 | } |
| 35 | |
| 36 | SensorService::SensorDirectConnection::~SensorDirectConnection() { |
| 37 | ALOGD_IF(DEBUG_CONNECTIONS, "~SensorDirectConnection %p", this); |
| 38 | |
| 39 | stopAll(); |
| 40 | mService->cleanupConnection(this); |
| 41 | if (mMem.handle != nullptr) { |
| 42 | native_handle_close(mMem.handle); |
| 43 | native_handle_delete(const_cast<struct native_handle*>(mMem.handle)); |
| 44 | } |
| 45 | } |
| 46 | |
| 47 | void SensorService::SensorDirectConnection::onFirstRef() { |
| 48 | } |
| 49 | |
| 50 | void SensorService::SensorDirectConnection::dump(String8& result) const { |
| 51 | Mutex::Autolock _l(mConnectionLock); |
| 52 | result.appendFormat("\tPackage %s, HAL channel handle %d, total sensor activated %zu\n", |
| 53 | String8(mOpPackageName).string(), getHalChannelHandle(), mActivated.size()); |
| 54 | for (auto &i : mActivated) { |
| 55 | result.appendFormat("\t\tSensor %#08x, rate %d\n", i.first, i.second); |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | sp<BitTube> SensorService::SensorDirectConnection::getSensorChannel() const { |
| 60 | return nullptr; |
| 61 | } |
| 62 | |
| 63 | status_t SensorService::SensorDirectConnection::enableDisable( |
| 64 | int handle, bool enabled, nsecs_t samplingPeriodNs, nsecs_t maxBatchReportLatencyNs, |
| 65 | int reservedFlags) { |
| 66 | // SensorDirectConnection does not support enableDisable, parameters not used |
| 67 | UNUSED(handle); |
| 68 | UNUSED(enabled); |
| 69 | UNUSED(samplingPeriodNs); |
| 70 | UNUSED(maxBatchReportLatencyNs); |
| 71 | UNUSED(reservedFlags); |
| 72 | return INVALID_OPERATION; |
| 73 | } |
| 74 | |
| 75 | status_t SensorService::SensorDirectConnection::setEventRate( |
| 76 | int handle, nsecs_t samplingPeriodNs) { |
| 77 | // SensorDirectConnection does not support setEventRate, parameters not used |
| 78 | UNUSED(handle); |
| 79 | UNUSED(samplingPeriodNs); |
| 80 | return INVALID_OPERATION; |
| 81 | } |
| 82 | |
| 83 | status_t SensorService::SensorDirectConnection::flush() { |
| 84 | // SensorDirectConnection does not support flush |
| 85 | return INVALID_OPERATION; |
| 86 | } |
| 87 | |
| 88 | int32_t SensorService::SensorDirectConnection::configureChannel(int handle, int rateLevel) { |
| 89 | |
| 90 | if (handle == -1 && rateLevel == SENSOR_DIRECT_RATE_STOP) { |
| 91 | stopAll(); |
| 92 | return NO_ERROR; |
| 93 | } |
| 94 | |
| 95 | if (mService->isOperationRestricted(mOpPackageName)) { |
| 96 | return PERMISSION_DENIED; |
| 97 | } |
| 98 | |
| 99 | sp<SensorInterface> si = mService->getSensorInterfaceFromHandle(handle); |
| 100 | if (si == nullptr) { |
| 101 | return NAME_NOT_FOUND; |
| 102 | } |
| 103 | |
| 104 | const Sensor& s = si->getSensor(); |
| 105 | if (!SensorService::canAccessSensor(s, "config direct channel", mOpPackageName)) { |
| 106 | return PERMISSION_DENIED; |
| 107 | } |
| 108 | |
| 109 | if (s.getHighestDirectReportRateLevel() == 0 |
| 110 | || rateLevel > s.getHighestDirectReportRateLevel() |
| 111 | || !s.isDirectChannelTypeSupported(mMem.type)) { |
| 112 | return INVALID_OPERATION; |
| 113 | } |
| 114 | |
| 115 | struct sensors_direct_cfg_t config = { |
| 116 | .rate_level = rateLevel |
| 117 | }; |
| 118 | |
| 119 | Mutex::Autolock _l(mConnectionLock); |
| 120 | SensorDevice& dev(SensorDevice::getInstance()); |
| 121 | int ret = dev.configureDirectChannel(handle, getHalChannelHandle(), &config); |
| 122 | |
| 123 | if (rateLevel == SENSOR_DIRECT_RATE_STOP) { |
| 124 | if (ret == NO_ERROR) { |
| 125 | mActivated.erase(handle); |
| 126 | } else if (ret > 0) { |
| 127 | ret = UNKNOWN_ERROR; |
| 128 | } |
| 129 | } else { |
| 130 | if (ret > 0) { |
| 131 | mActivated[handle] = rateLevel; |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | return ret; |
| 136 | } |
| 137 | |
| 138 | void SensorService::SensorDirectConnection::stopAll(bool backupRecord) { |
| 139 | |
| 140 | struct sensors_direct_cfg_t config = { |
| 141 | .rate_level = SENSOR_DIRECT_RATE_STOP |
| 142 | }; |
| 143 | |
| 144 | Mutex::Autolock _l(mConnectionLock); |
| 145 | SensorDevice& dev(SensorDevice::getInstance()); |
| 146 | for (auto &i : mActivated) { |
| 147 | dev.configureDirectChannel(i.first, getHalChannelHandle(), &config); |
| 148 | } |
| 149 | |
| 150 | if (backupRecord && mActivatedBackup.empty()) { |
| 151 | mActivatedBackup = mActivated; |
| 152 | } |
| 153 | mActivated.clear(); |
| 154 | } |
| 155 | |
| 156 | void SensorService::SensorDirectConnection::recoverAll() { |
| 157 | stopAll(false); |
| 158 | |
| 159 | Mutex::Autolock _l(mConnectionLock); |
| 160 | SensorDevice& dev(SensorDevice::getInstance()); |
| 161 | |
| 162 | // recover list of report from backup |
| 163 | mActivated = mActivatedBackup; |
| 164 | mActivatedBackup.clear(); |
| 165 | |
| 166 | // re-enable them |
| 167 | for (auto &i : mActivated) { |
| 168 | struct sensors_direct_cfg_t config = { |
| 169 | .rate_level = i.second |
| 170 | }; |
| 171 | dev.configureDirectChannel(i.first, getHalChannelHandle(), &config); |
| 172 | } |
| 173 | } |
| 174 | |
| 175 | int32_t SensorService::SensorDirectConnection::getHalChannelHandle() const { |
| 176 | return mHalChannelHandle; |
| 177 | } |
| 178 | |
| 179 | bool SensorService::SensorDirectConnection::isEquivalent(const sensors_direct_mem_t *mem) const { |
| 180 | bool ret = false; |
| 181 | |
| 182 | if (mMem.type == mem->type) { |
| 183 | switch (mMem.type) { |
| 184 | case SENSOR_DIRECT_MEM_TYPE_ASHMEM: { |
| 185 | struct stat s1, s2; |
| 186 | int fd1, fd2; |
| 187 | fd1 = mMem.handle->data[0]; |
| 188 | fd2 = mem->handle->data[1]; |
| 189 | if (fstat(fd1, &s1) < 0 || fstat(fd2, &s2) < 0 || s1.st_ino == s2.st_ino) { |
| 190 | ret = true; |
| 191 | } |
| 192 | } |
| 193 | case SENSOR_DIRECT_MEM_TYPE_GRALLOC: |
| 194 | LOG_FATAL("%s: Implement GRALLOC or remove", __FUNCTION__); |
| 195 | ret = true; |
| 196 | default: |
| 197 | ALOGE("Unexpected mem type %d", mMem.type); |
| 198 | ret = true; |
| 199 | } |
| 200 | } |
| 201 | return ret; |
| 202 | } |
| 203 | |
| 204 | } // namespace android |
| 205 | |