1 /*
2  * Copyright 2022 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 <cstdint>
20 
21 #include <ftl/mixins.h>
22 
23 namespace android {
24 
25 // Sequential frame identifier, also known as FrameTimeline token.
26 //
27 // TODO(b/241285191): Pull to <gui/FrameTimelineInfo.h> and use VsyncId over int64_t everywhere.
28 struct VsyncId : ftl::DefaultConstructible<VsyncId, int64_t, -1>,
29                  ftl::Incrementable<VsyncId>,
30                  ftl::Equatable<VsyncId> {
31     using DefaultConstructible::DefaultConstructible;
32 };
33 
34 } // namespace android
35