| // Copyright 2017 The Cobalt Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #ifndef COBALT_MEDIA_SESSION_MEDIA_SESSION_H_ |
| #define COBALT_MEDIA_SESSION_MEDIA_SESSION_H_ |
| |
| #include <map> |
| #include <memory> |
| |
| #include "base/containers/small_map.h" |
| #include "base/location.h" |
| #include "base/logging.h" |
| #include "base/message_loop/message_loop.h" |
| #include "cobalt/media/web_media_player_factory.h" |
| #include "cobalt/media_session/media_metadata.h" |
| #include "cobalt/media_session/media_position_state.h" |
| #include "cobalt/media_session/media_session_action.h" |
| #include "cobalt/media_session/media_session_action_details.h" |
| #include "cobalt/media_session/media_session_playback_state.h" |
| #include "cobalt/script/callback_function.h" |
| #include "cobalt/script/script_value.h" |
| #include "cobalt/script/wrappable.h" |
| #include "starboard/time.h" |
| |
| namespace cobalt { |
| namespace media_session { |
| |
| class MediaSessionClient; |
| |
| class MediaSession : public script::Wrappable { |
| friend class MediaSessionClient; |
| |
| public: |
| typedef script::CallbackFunction<void( |
| const MediaSessionActionDetails& action_details)> |
| MediaSessionActionHandler; |
| typedef script::ScriptValue<MediaSessionActionHandler> |
| MediaSessionActionHandlerHolder; |
| typedef script::ScriptValue<MediaSessionActionHandler>::Reference |
| MediaSessionActionHandlerReference; |
| |
| private: |
| // typedef base::small_map< |
| // std::map<MediaSessionAction, MediaSessionActionHandlerReference*>, |
| // kMediaSessionActionNumActions> |
| // ActionMap; |
| typedef std::map<MediaSessionAction, |
| script::ScriptValue<MediaSessionActionHandler>::Reference*> |
| ActionMap; |
| |
| public: |
| MediaSession(); |
| ~MediaSession() override; |
| |
| explicit MediaSession(MediaSessionClient* client); |
| |
| scoped_refptr<MediaMetadata> metadata() const { return metadata_; } |
| |
| void set_metadata(scoped_refptr<MediaMetadata> value); |
| |
| MediaSessionPlaybackState playback_state() const { return playback_state_; } |
| |
| void set_playback_state(MediaSessionPlaybackState state); |
| |
| void SetActionHandler(MediaSessionAction action, |
| const MediaSessionActionHandlerHolder& handler); |
| |
| void SetPositionState(base::Optional<MediaPositionState> state); |
| |
| DEFINE_WRAPPABLE_TYPE(MediaSession); |
| void TraceMembers(script::Tracer* tracer) override; |
| |
| // Check whether a change task has been queued. Should only be called by |
| // unit tests. |
| bool IsChangeTaskQueuedForTesting() const; |
| |
| MediaSessionClient* media_session_client() { |
| return media_session_client_.get(); |
| } |
| |
| void EnsureMediaSessionClient(); |
| |
| private: |
| void MaybeQueueChangeTask(base::TimeDelta delay); |
| void OnChanged(); |
| |
| // Returns a time representing right now - may be overridden for testing. |
| virtual SbTimeMonotonic GetMonotonicNow() const { |
| return SbTimeGetMonotonicNow(); |
| } |
| |
| ActionMap action_map_; |
| std::unique_ptr<MediaSessionClient> media_session_client_; |
| scoped_refptr<MediaMetadata> metadata_; |
| MediaSessionPlaybackState playback_state_; |
| scoped_refptr<base::SingleThreadTaskRunner> task_runner_; |
| bool is_change_task_queued_; |
| SbTimeMonotonic last_position_updated_time_; |
| base::Optional<MediaPositionState> media_position_state_; |
| |
| DISALLOW_COPY_AND_ASSIGN(MediaSession); |
| }; |
| |
| } // namespace media_session |
| } // namespace cobalt |
| #endif // COBALT_MEDIA_SESSION_MEDIA_SESSION_H_ |