1 /*
2  * Copyright (C) 2017 The Android Open Source Project
3  *
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
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
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.
15  */
16 
17 #pragma once
18 
19 #include <android/hardware/graphics/composer/2.1/IComposerCallback.h>
20 
21 #include <mutex>
22 #include <vector>
23 
24 namespace android {
25 namespace hardware {
26 namespace graphics {
27 namespace composer {
28 namespace V2_1 {
29 namespace vts {
30 
31 // IComposerCallback to be installed with IComposerClient::registerCallback.
32 class GraphicsComposerCallback : public IComposerCallback {
33    public:
34     void setVsyncAllowed(bool allowed);
35 
36     std::vector<Display> getDisplays() const;
37 
38     int getInvalidHotplugCount() const;
39 
40     int getInvalidRefreshCount() const;
41 
42     int getInvalidVsyncCount() const;
43 
44    private:
45     Return<void> onHotplug(Display display, Connection connection) override;
46     Return<void> onRefresh(Display display) override;
47     Return<void> onVsync(Display display, int64_t) override;
48 
49     mutable std::mutex mMutex;
50     // the set of all currently connected displays
51     std::vector<Display> mDisplays;
52     // true only when vsync is enabled
53     bool mVsyncAllowed = true;
54 
55     // track invalid callbacks
56     int mInvalidHotplugCount = 0;
57     int mInvalidRefreshCount = 0;
58     int mInvalidVsyncCount = 0;
59 };
60 
61 }  // namespace vts
62 }  // namespace V2_1
63 }  // namespace composer
64 }  // namespace graphics
65 }  // namespace hardware
66 }  // namespace android
67