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