1 /*
2 * Copyright (c) 2025 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 "dp_log.h"
18
19 namespace OHOS {
20 namespace CameraStandard {
21 namespace DeferredProcessing {
ChangeStateTo(const std::shared_ptr<State> & targetState)22 void StateMachine::ChangeStateTo(const std::shared_ptr<State> &targetState)
23 {
24 DP_CHECK_RETURN_LOG(currState_ == targetState, "already is type: %{public}d", currState_->GetState());
25
26 std::shared_ptr<State> lastState = currState_;
27 currState_ = targetState;
28 if (lastState == nullptr) {
29 DP_INFO_LOG("change to %{public}d", currState_->GetState());
30 } else {
31 DP_INFO_LOG("from %{public}d to %{public}d", lastState->GetState(), currState_->GetState());
32 lastState->OnStateExited();
33 }
34 currState_->OnStateEntered();
35 }
36 } // namespace DeferredProcessing
37 } // namespace CameraStandard
38 } // namespace OHOS