1 /* 2 * Copyright (c) 2021-2021 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 #ifndef HISTREAMER_HIPLAYER_PREPARE_STATE_H 17 #define HISTREAMER_HIPLAYER_PREPARE_STATE_H 18 19 #include <memory> 20 #include "foundation/log.h" 21 #include "pipeline/core/error_code.h" 22 #include "play_executor.h" 23 #include "state.h" 24 25 namespace OHOS { 26 namespace Media { 27 class PreparingState : public State { 28 public: PreparingState(StateId stateId,PlayExecutor & executor)29 explicit PreparingState(StateId stateId, PlayExecutor& executor) : State(stateId, "PreparingState", executor) 30 { 31 } 32 33 ~PreparingState() override = default; 34 Enter(Intent)35 std::tuple<ErrorCode, Action> Enter(Intent) override 36 { 37 Action nextAction = Action::ACTION_BUTT; 38 auto rtv = executor_.PrepareFilters(); 39 if (rtv != ErrorCode::SUCCESS) { 40 nextAction = Action::TRANS_TO_INIT; 41 } 42 return {rtv, nextAction}; 43 } 44 Play()45 std::tuple<ErrorCode, Action> Play() override 46 { 47 MEDIA_LOG_W("Play received in preparing state."); 48 return {ErrorCode::SUCCESS, Action::ACTION_PENDING}; 49 } 50 Stop()51 std::tuple<ErrorCode, Action> Stop() override 52 { 53 return {ErrorCode::SUCCESS, Action::TRANS_TO_STOPPED}; 54 } 55 OnReady()56 std::tuple<ErrorCode, Action> OnReady() override 57 { 58 return {ErrorCode::SUCCESS, Action::TRANS_TO_READY}; 59 } 60 }; 61 } // namespace Media 62 } // namespace OHOS 63 #endif 64