1 /* 2 * Copyright (C) 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 PLAYBIN_STATE_H 17 #define PLAYBIN_STATE_H 18 19 #include "playbin_ctrler_base.h" 20 #include "state_machine.h" 21 #include "inner_msg_define.h" 22 23 namespace OHOS { 24 namespace Media { 25 class PlayBinCtrlerBase::BaseState : public State { 26 public: BaseState(PlayBinCtrlerBase & ctrler,const std::string & name)27 BaseState(PlayBinCtrlerBase &ctrler, const std::string &name) : State(name), ctrler_(ctrler) {} 28 virtual ~BaseState() = default; 29 30 virtual int32_t Prepare(); 31 virtual int32_t Play(); 32 virtual int32_t Pause(); 33 virtual int32_t Seek(int64_t timeUs, int32_t option); 34 virtual int32_t Stop(); 35 36 protected: 37 void OnMessageReceived(const InnerMessage &msg) final; ProcessMessage(const InnerMessage & msg)38 virtual void ProcessMessage(const InnerMessage &msg) {} 39 void ReportInvalidOperation(); 40 int32_t ChangePlayBinState(GstState targetState); 41 42 PlayBinCtrlerBase &ctrler_; 43 }; 44 45 class PlayBinCtrlerBase::IdleState : public PlayBinCtrlerBase::BaseState { 46 public: IdleState(PlayBinCtrlerBase & ctrler)47 explicit IdleState(PlayBinCtrlerBase &ctrler) : BaseState(ctrler, "idle_state") {} 48 ~IdleState() = default; 49 50 protected: 51 void StateEnter() override; 52 }; 53 54 class PlayBinCtrlerBase::InitializedState : public PlayBinCtrlerBase::BaseState { 55 public: InitializedState(PlayBinCtrlerBase & ctrler)56 explicit InitializedState(PlayBinCtrlerBase &ctrler) : BaseState(ctrler, "inited_state") {} 57 ~InitializedState() = default; 58 59 int32_t Prepare() override; 60 }; 61 62 class PlayBinCtrlerBase::PreparingState : public PlayBinCtrlerBase::BaseState { 63 public: PreparingState(PlayBinCtrlerBase & ctrler)64 explicit PreparingState(PlayBinCtrlerBase &ctrler) : BaseState(ctrler, "preparing_state") {} 65 ~PreparingState() = default; 66 67 int32_t Stop() override; 68 69 protected: 70 void ProcessMessage(const InnerMessage &msg) override; 71 void StateEnter() override; 72 void StateExit() override; 73 74 bool stateChanged_ = false; 75 }; 76 77 class PlayBinCtrlerBase::PreparedState : public PlayBinCtrlerBase::BaseState { 78 public: PreparedState(PlayBinCtrlerBase & ctrler)79 explicit PreparedState(PlayBinCtrlerBase &ctrler) : BaseState(ctrler, "prepared_state") {} 80 ~PreparedState() = default; 81 82 int32_t Prepare() override; 83 int32_t Play() override; 84 int32_t Seek(int64_t timeUs, int32_t option) override; 85 int32_t Stop() override; 86 87 protected: 88 void ProcessMessage(const InnerMessage &msg) override; 89 void StateEnter() override; 90 }; 91 92 class PlayBinCtrlerBase::PlayingState : public PlayBinCtrlerBase::BaseState { 93 public: PlayingState(PlayBinCtrlerBase & ctrler)94 explicit PlayingState(PlayBinCtrlerBase &ctrler) : BaseState(ctrler, "playing_state") {} 95 ~PlayingState() = default; 96 97 int32_t Play() override; 98 int32_t Pause() override; 99 int32_t Seek(int64_t timeUs, int32_t option) override; 100 int32_t Stop() override; 101 102 protected: 103 void ProcessMessage(const InnerMessage &msg) override; 104 void StateEnter() override; 105 106 bool seekPending_ = false; 107 }; 108 109 class PlayBinCtrlerBase::PausedState : public PlayBinCtrlerBase::BaseState { 110 public: PausedState(PlayBinCtrlerBase & ctrler)111 explicit PausedState(PlayBinCtrlerBase &ctrler) : BaseState(ctrler, "paused_state") {} 112 ~PausedState() = default; 113 114 int32_t Play() override; 115 int32_t Pause() override; 116 int32_t Seek(int64_t timeUs, int32_t option) override; 117 int32_t Stop() override; 118 119 protected: 120 void ProcessMessage(const InnerMessage &msg) override; 121 void StateEnter() override; 122 }; 123 124 class PlayBinCtrlerBase::StoppedState : public PlayBinCtrlerBase::BaseState { 125 public: StoppedState(PlayBinCtrlerBase & ctrler)126 explicit StoppedState(PlayBinCtrlerBase &ctrler) : BaseState(ctrler, "stopped_state") {} 127 ~StoppedState() = default; 128 129 int32_t Prepare() override; 130 int32_t Stop() override; 131 132 protected: 133 void ProcessMessage(const InnerMessage &msg) override; 134 void StateEnter() override; 135 }; 136 } // namespace Media 137 } // namespace OHOS 138 #endif // PLAYBIN_STATE_H