1 /*
2  * Copyright 2020 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 <cstring>
20 #include <ostream>
21 
22 namespace android {
23 namespace scheduler {
24 
25 // The seamlessness requirement of a Layer.
26 enum class Seamlessness {
27     // Indicates a requirement for a seamless mode switch.
28     OnlySeamless,
29     // Indicates that both seamless and seamed mode switches are allowed.
30     SeamedAndSeamless,
31     // Indicates no preference for seamlessness. For such layers the system will
32     // prefer seamless switches, but also non-seamless switches to the group of the
33     // default config are allowed.
34     Default
35 };
36 
toString(Seamlessness seamlessness)37 inline std::string toString(Seamlessness seamlessness) {
38     switch (seamlessness) {
39         case Seamlessness::OnlySeamless:
40             return "OnlySeamless";
41         case Seamlessness::SeamedAndSeamless:
42             return "SeamedAndSeamless";
43         case Seamlessness::Default:
44             return "Default";
45     }
46 }
47 
48 // Used by gtest
49 inline std::ostream& operator<<(std::ostream& os, Seamlessness val) {
50     return os << toString(val);
51 }
52 
53 } // namespace scheduler
54 } // namespace android
55