1 /*
2  * Copyright (c) 2021 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef VSYNC_IVSYNC_CONNECTION_H
17 #define VSYNC_IVSYNC_CONNECTION_H
18 
19 #include <iremote_broker.h>
20 #include "graphic_common.h"
21 
22 namespace OHOS {
23 namespace Rosen {
24 class IVSyncConnection : public IRemoteBroker {
25 public:
26     virtual VsyncError RequestNextVSync() = 0;
27     virtual VsyncError RequestNextVSync(const std::string& fromWhom, int64_t lastVSyncTS) = 0;
28 
29     virtual VsyncError GetReceiveFd(int32_t &fd) = 0;
30 
31     // We assume that the vsync frequency is FREQ:
32     // if rate <= 0, we just return error
33     // if rate > 0, we will continue to send Vsync signals at a frequency of FREQ / rate
34     virtual VsyncError SetVSyncRate(int32_t rate) = 0;
35 
36     virtual VsyncError Destroy() = 0;
37     virtual VsyncError SetUiDvsyncSwitch(bool dvsyncSwitch) = 0;
38     virtual VsyncError SetUiDvsyncConfig(int32_t bufferCount) = 0;
39     virtual VsyncError SetNativeDVSyncSwitch(bool dvsyncSwitch) = 0;
40 
41     DECLARE_INTERFACE_DESCRIPTOR(u"IVSyncConnection");
42 
43 protected:
44     enum {
45         IVSYNC_CONNECTION_REQUEST_NEXT_VSYNC,
46         IVSYNC_CONNECTION_GET_RECEIVE_FD,
47         IVSYNC_CONNECTION_SET_RATE,
48         IVSYNC_CONNECTION_DESTROY,
49         IVSYNC_CONNECTION_SET_UI_DVSYNC_SWITCH,
50         IVSYNC_CONNECTION_SET_UI_DVSYNC_CONFIG,
51         IVSYNC_CONNECTION_SET_NATIVE_DVSYNC_SWITCH,
52     };
53 };
54 } // namespace Vsync
55 } // namespace OHOS
56 
57 #endif // VSYNC_IVSYNC_CONNECTION_H
58