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91 lines
2.9 KiB
91 lines
2.9 KiB
/*
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* Copyright (C) 2017 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 "EventQueue.h"
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#include "utils.h"
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#include <utils/Looper.h>
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namespace android {
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namespace frameworks {
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namespace sensorservice {
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namespace V1_0 {
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namespace implementation {
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class EventQueueLooperCallback : public ::android::LooperCallback {
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public:
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EventQueueLooperCallback(sp<::android::SensorEventQueue> queue,
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sp<IEventQueueCallback> callback)
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: mQueue(queue), mCallback(callback) {
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}
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int handleEvent(__unused int fd, __unused int events, __unused void* data) {
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ASensorEvent event;
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ssize_t actual;
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auto internalQueue = mQueue.promote();
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if (internalQueue == nullptr) {
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return 1;
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}
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while ((actual = internalQueue->read(&event, 1 /* count */)) > 0) {
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internalQueue->sendAck(&event, actual);
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Return<void> ret = mCallback->onEvent(convertEvent(event));
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(void)ret.isOk(); // ignored
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}
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return 1; // continue to receive callbacks
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}
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private:
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wp<::android::SensorEventQueue> mQueue;
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sp<IEventQueueCallback> mCallback;
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};
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EventQueue::EventQueue(
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sp<IEventQueueCallback> callback,
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sp<::android::Looper> looper,
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sp<::android::SensorEventQueue> internalQueue)
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: mLooper(looper),
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mInternalQueue(internalQueue) {
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mLooper->addFd(internalQueue->getFd(), ALOOPER_POLL_CALLBACK, ALOOPER_EVENT_INPUT,
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new EventQueueLooperCallback(internalQueue, callback), nullptr /* data */);
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}
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void EventQueue::onLastStrongRef(const void *id) {
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IEventQueue::onLastStrongRef(id);
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mLooper->removeFd(mInternalQueue->getFd());
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}
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// Methods from ::android::frameworks::sensorservice::V1_0::IEventQueue follow.
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Return<Result> EventQueue::enableSensor(int32_t sensorHandle, int32_t samplingPeriodUs,
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int64_t maxBatchReportLatencyUs) {
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return convertResult(mInternalQueue->enableSensor(sensorHandle, samplingPeriodUs,
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maxBatchReportLatencyUs, 0 /* reserved flags */));
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}
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Return<Result> EventQueue::disableSensor(int32_t sensorHandle) {
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return convertResult(mInternalQueue->disableSensor(sensorHandle));
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}
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} // namespace implementation
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} // namespace V1_0
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} // namespace sensorservice
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} // namespace frameworks
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} // namespace android
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