2 * Copyright (C) 2015 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #ifndef ANDROID_EVENT_WORKER_H_
18 #define ANDROID_EVENT_WORKER_H_
20 #include <hardware/hardware.h>
21 #include <hardware/hwcomposer.h>
22 #include <hardware/hwcomposer2.h>
27 #include "DrmDevice.h"
28 #include "utils/Worker.h"
34 virtual ~VsyncCallback() {
36 virtual void Callback(int display, int64_t timestamp) = 0;
39 class VSyncWorker : public Worker {
42 ~VSyncWorker() override;
44 int Init(DrmDevice *drm, int display);
45 void RegisterCallback(std::shared_ptr<VsyncCallback> callback);
46 void RegisterClientCallback(hwc2_callback_data_t data,
47 hwc2_function_pointer_t hook);
49 void VSyncControl(bool enabled);
52 void Routine() override;
55 int64_t GetPhasedVSync(int64_t frame_ns, int64_t current);
56 int SyntheticWaitVBlank(int64_t *timestamp);
60 // shared_ptr since we need to use this outside of the thread lock (to
61 // actually call the hook) and we don't want the memory freed until we're
63 std::shared_ptr<VsyncCallback> callback_ = NULL;
66 std::atomic_bool enabled_;
67 int64_t last_timestamp_;
69 hwc2_callback_data_t vsync_callback_data_ = NULL;
70 HWC2_PFN_VSYNC vsync_callback_hook_ = NULL;
72 } // namespace android