1 /*
2  * Copyright (C) 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 #ifndef ANDROID_HARDWARE_CONTEXTHUB_COMMON_CHRE_CONNECTION_CALLBACK_H_
17 #define ANDROID_HARDWARE_CONTEXTHUB_COMMON_CHRE_CONNECTION_CALLBACK_H_
18 
19 namespace android::hardware::contexthub::common::implementation {
20 
21 /**
22  * The callback interface for ChreConnection.
23  *
24  * A Context Hub HAL should implement this interface so that the ChreConnection
25  * has an API to pass message to.
26  */
27 class ChreConnectionCallback {
28  public:
29   virtual ~ChreConnectionCallback() = default;
30   virtual void handleMessageFromChre(const unsigned char *message,
31                                      size_t messageLen) = 0;
32 
33   /** This method should be called when CHRE is reconnected to HAL and ready to
34    * accept new messages. */
onChreRestarted()35   virtual void onChreRestarted(){};
36 };
37 }  // namespace android::hardware::contexthub::common::implementation
38 #endif  // ANDROID_HARDWARE_CONTEXTHUB_COMMON_CHRE_CONNECTION_CALLBACK_H_