1 /*
2  * Copyright (C) 2023 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 #include "state_machine.h"
17 #include "hcodec_log.h"
18 
19 namespace OHOS::MediaAVCodec {
ChangeStateTo(const std::shared_ptr<State> & targetState)20 void StateMachine::ChangeStateTo(const std::shared_ptr<State> &targetState)
21 {
22     if (currState_ == targetState) {
23         LOGI("already %s", currState_->stateName_.c_str());
24         return;
25     }
26     std::shared_ptr<State> lastState = currState_;
27     currState_ = targetState;
28     if (lastState == nullptr) {
29         LOGI("change to %s", currState_->stateName_.c_str());
30     } else {
31         LOGI("%s -> %s", lastState->stateName_.c_str(), currState_->stateName_.c_str());
32         lastState->OnStateExited();
33     }
34     currState_->OnStateEntered();
35 }
36 
OnMsgReceived(const MsgInfo & info)37 void StateMachine::OnMsgReceived(const MsgInfo &info)
38 {
39     currState_->OnMsgReceived(info);
40 }
41 }