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/*
* Copyright (C) 2015 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.
*/
#ifndef ANDROID_EVENT_WORKER_H_
#define ANDROID_EVENT_WORKER_H_
#include <hardware/hardware.h>
#include <hardware/hwcomposer.h>
#include <hardware/hwcomposer2.h>
#include <stdint.h>
#include <atomic>
#include <map>
#include "DrmDevice.h"
#include "utils/Worker.h"
namespace android {
class VsyncCallback {
public:
virtual ~VsyncCallback() = default;
virtual void Callback(int display, int64_t timestamp) = 0;
};
class VSyncWorker : public Worker {
public:
VSyncWorker();
~VSyncWorker() override = default;
int Init(DrmDevice *drm, int display);
void RegisterCallback(std::shared_ptr<VsyncCallback> callback);
void RegisterClientCallback(hwc2_callback_data_t data,
hwc2_function_pointer_t hook);
void VSyncControl(bool enabled);
protected:
void Routine() override;
private:
int64_t GetPhasedVSync(int64_t frame_ns, int64_t current) const;
int SyntheticWaitVBlank(int64_t *timestamp);
DrmDevice *drm_;
// shared_ptr since we need to use this outside of the thread lock (to
// actually call the hook) and we don't want the memory freed until we're
// done
std::shared_ptr<VsyncCallback> callback_ = NULL;
int display_;
std::atomic_bool enabled_;
int64_t last_timestamp_;
hwc2_callback_data_t vsync_callback_data_ = NULL;
HWC2_PFN_VSYNC vsync_callback_hook_ = NULL;
};
} // namespace android
#endif
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