122 lines
4.3 KiB
C++
122 lines
4.3 KiB
C++
/*
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* Copyright (C) 2019 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "OccupantAwareness.h"
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namespace android {
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namespace hardware {
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namespace automotive {
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namespace occupant_awareness {
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namespace V1_0 {
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namespace implementation {
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using ndk::ScopedAStatus;
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static const int32_t kAllCapabilities = OccupantAwareness::CAP_PRESENCE_DETECTION |
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OccupantAwareness::CAP_GAZE_DETECTION |
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OccupantAwareness::CAP_DRIVER_MONITORING_DETECTION;
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ScopedAStatus OccupantAwareness::startDetection(OccupantAwarenessStatus* status) {
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std::lock_guard<std::mutex> lock(mMutex);
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if (mStatus != OccupantAwarenessStatus::NOT_SUPPORTED) {
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mStatus = OccupantAwarenessStatus::NOT_SUPPORTED;
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if (mCallback) {
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mCallback->onSystemStatusChanged(kAllCapabilities,
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OccupantAwarenessStatus::NOT_SUPPORTED);
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}
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}
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*status = mStatus;
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return ScopedAStatus::ok();
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}
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ScopedAStatus OccupantAwareness::stopDetection(OccupantAwarenessStatus* status) {
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std::lock_guard<std::mutex> lock(mMutex);
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if (mStatus != OccupantAwarenessStatus::NOT_INITIALIZED) {
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mStatus = OccupantAwarenessStatus::NOT_INITIALIZED;
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if (mCallback) {
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mCallback->onSystemStatusChanged(kAllCapabilities,
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OccupantAwarenessStatus::NOT_INITIALIZED);
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}
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}
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*status = mStatus;
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return ScopedAStatus::ok();
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}
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ScopedAStatus OccupantAwareness::getCapabilityForRole(Role occupantRole, int32_t* capabilities) {
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if (!isValidRole(occupantRole)) {
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return ScopedAStatus::fromExceptionCode(EX_TRANSACTION_FAILED);
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}
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// No awareness capability for default HAL.
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*capabilities = 0;
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return ScopedAStatus::ok();
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}
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ScopedAStatus OccupantAwareness::getState(Role occupantRole, int detectionCapability,
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OccupantAwarenessStatus* status) {
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if (!isValidRole(occupantRole)) {
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return ScopedAStatus::fromExceptionCode(EX_TRANSACTION_FAILED);
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}
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if (!isValidDetectionCapabilities(detectionCapability) ||
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!isSingularCapability(detectionCapability)) {
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return ScopedAStatus::fromExceptionCode(EX_TRANSACTION_FAILED);
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}
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std::lock_guard<std::mutex> lock(mMutex);
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*status = mStatus;
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return ScopedAStatus::ok();
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}
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ScopedAStatus OccupantAwareness::setCallback(
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const std::shared_ptr<IOccupantAwarenessClientCallback>& callback) {
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if (callback == nullptr) {
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return ScopedAStatus::fromExceptionCode(EX_TRANSACTION_FAILED);
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}
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std::lock_guard<std::mutex> lock(mMutex);
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mCallback = callback;
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return ScopedAStatus::ok();
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}
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ScopedAStatus OccupantAwareness::getLatestDetection(OccupantDetections* detections) {
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// No detection generated for default hal.
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(void)detections;
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return ScopedAStatus::fromExceptionCode(EX_TRANSACTION_FAILED);
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}
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bool OccupantAwareness::isValidRole(Role occupantRole) {
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int intVal = static_cast<int>(occupantRole);
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int allOccupants = static_cast<int>(Role::ALL_OCCUPANTS);
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return (occupantRole != Role::INVALID) && ((intVal & (~allOccupants)) == 0);
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}
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bool OccupantAwareness::isValidDetectionCapabilities(int detectionCapabilities) {
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return (detectionCapabilities != CAP_NONE) &&
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((detectionCapabilities & (~kAllCapabilities)) == 0);
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}
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bool OccupantAwareness::isSingularCapability(int detectionCapability) {
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// Check whether the value is 0, or the value has only one bit set.
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return (detectionCapability & (detectionCapability - 1)) == 0;
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}
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} // namespace implementation
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} // namespace V1_0
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} // namespace occupant_awareness
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} // namespace automotive
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} // namespace hardware
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} // namespace android
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