1 /*
2  * Copyright (C) 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 #ifndef ANDROID_MEDIA_RESOURCE_POLICY_INTERFACE_H
18 #define ANDROID_MEDIA_RESOURCE_POLICY_INTERFACE_H
19 #include <memory>
20 namespace android {
21 
22 class ResourcePolicyCallbackInterface;
23 
24 // Interface for the SessionController to control the resource status updates.
25 class ResourcePolicyInterface {
26 public:
27     // Set the associated callback interface to send the events when resource
28     // status changes. (Set to nullptr will stop the updates.)
29     virtual void setCallback(const std::shared_ptr<ResourcePolicyCallbackInterface>& cb) = 0;
30     virtual void setPidResourceLost(pid_t pid) = 0;
31 
32 protected:
33     virtual ~ResourcePolicyInterface() = default;
34 };
35 
36 // Interface for notifying the SessionController of a change in resource status.
37 class ResourcePolicyCallbackInterface {
38 public:
39     // Called when codec resources become available. The controller may use this
40     // as a signal to attempt restart transcoding sessions that were previously
41     // paused due to temporary resource loss.
42     virtual void onResourceAvailable() = 0;
43 
44 protected:
45     virtual ~ResourcePolicyCallbackInterface() = default;
46 };
47 
48 }  // namespace android
49 #endif  // ANDROID_MEDIA_RESOURCE_POLICY_INTERFACE_H
50