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/*
* Copyright 2018 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.
*/
#pragma once
#include <mutex>
#include <string>
#include "DispSync.h"
#include "EventThread.h"
#include "TracedOrdinal.h"
namespace android {
class DispSyncSource final : public VSyncSource, private DispSync::Callback {
public:
DispSyncSource(DispSync* dispSync, nsecs_t phaseOffset, bool traceVsync, const char* name);
~DispSyncSource() override = default;
// The following methods are implementation of VSyncSource.
const char* getName() const override { return mName; }
void setVSyncEnabled(bool enable) override;
void setCallback(VSyncSource::Callback* callback) override;
void setPhaseOffset(nsecs_t phaseOffset) override;
void dump(std::string&) const override;
private:
// The following method is the implementation of the DispSync::Callback.
void onDispSyncEvent(nsecs_t when, nsecs_t expectedVSyncTimestamp) override;
const char* const mName;
TracedOrdinal<int> mValue;
const bool mTraceVsync;
const std::string mVsyncOnLabel;
nsecs_t mLastCallbackTime GUARDED_BY(mVsyncMutex) = 0;
DispSync* mDispSync;
std::mutex mCallbackMutex;
VSyncSource::Callback* mCallback GUARDED_BY(mCallbackMutex) = nullptr;
mutable std::mutex mVsyncMutex;
TracedOrdinal<nsecs_t> mPhaseOffset GUARDED_BY(mVsyncMutex);
bool mEnabled GUARDED_BY(mVsyncMutex) = false;
};
} // namespace android
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