108 lines
3.6 KiB
C++
108 lines
3.6 KiB
C++
/*
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* Copyright (C) 2015 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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#ifndef ACTIVITY_H_
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#define ACTIVITY_H_
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#include <hardware/activity_recognition.h>
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#include <media/stagefright/foundation/ABase.h>
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#include <utils/KeyedVector.h>
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#include <utils/Vector.h>
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#include "activityeventhandler.h"
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#include "hubconnection.h"
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namespace android {
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class ActivityContext : public ActivityEventHandler {
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public:
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activity_recognition_device_t device;
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explicit ActivityContext(const struct hw_module_t *module);
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~ActivityContext();
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bool getHubAlive();
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void registerActivityCallback(
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const activity_recognition_callback_procs_t *callback);
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int enableActivityEvent(uint32_t activity_handle,
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uint32_t event_type, int64_t max_report_latency_ns);
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int disableActivityEvent(uint32_t activity_handle, uint32_t event_type);
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int flush();
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// ActivityEventHandler interface.
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virtual void OnActivityEvent(int sensorIndex, uint8_t eventIndex,
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uint64_t whenNs) override;
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virtual void OnFlush() override;
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virtual void OnSensorHubReset() override;
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private:
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android::sp<android::HubConnection> mHubConnection;
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android::Mutex mCallbackLock;
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const activity_recognition_callback_procs_t *mCallback;
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struct ActivityEvent {
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uint8_t eventIndex;
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int sensorIndex;
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uint64_t whenNs;
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};
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// Whether or not the newest published event index is known. When the AR HAL
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// is initially started this is set to false to allow any event index from
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// the sensor hub. It is also set to false when a hub reset occurs.
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bool mNewestPublishedEventIndexIsKnown;
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// The index of the newest published event. The next event from the sensor
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// hub must follow this event or else it will be pushed into a list of
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// events to be published once the gap in events has been received.
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uint8_t mNewestPublishedEventIndex;
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// The timestamp of the most recently published event. If the absolute value
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// of the delta of the next timestamp to the current timestamp is below some
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// threshold, this timestamp will be reused. This is used to ensure that
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// activity transitions share the same timestamp and works around agressive
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// AP->ContextHub time synchronization mechansims.
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uint64_t mNewestPublishedTimestamp;
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// The list of unpublished events. These are published once the next
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// event arrives and is greater than mNewestPublishedEventIndex by 1
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// (wrapping across 255).
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Vector<ActivityEvent> mUnpublishedEvents;
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// Track the number of flush events sent to the sensor hub.
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int mOutstandingFlushEvents;
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// Publishes remaining unpublished events.
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void PublishUnpublishedEvents();
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// Publishes an AR event to the AR HAL client.
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void PublishEvent(const ActivityEvent& event);
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// Searches for very old AR events, discards them and publishes EVENT_EXIT
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// transitions for all activities.
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void DiscardExpiredUnpublishedEvents(uint64_t whenNs);
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DISALLOW_EVIL_CONSTRUCTORS(ActivityContext);
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};
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} // namespace android
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#endif // ACTIVITY_H_
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