| // Copyright 2017 Google Inc. 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 "cobalt/media_session/media_metadata.h" |
| |
| #include "base/containers/small_map.h" |
| #include "base/location.h" |
| #include "base/logging.h" |
| #include "base/message_loop_proxy.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" |
| |
| namespace cobalt { |
| namespace media_session { |
| |
| class MediaSessionClient; |
| |
| class MediaSession : public script::Wrappable { |
| friend class MediaSessionClient; |
| |
| public: |
| typedef script::CallbackFunction<void( |
| const scoped_refptr<MediaSessionActionDetails>& action_details)> |
| MediaSessionActionHandler; |
| typedef script::ScriptValue<MediaSessionActionHandler> |
| MediaSessionActionHandlerHolder; |
| typedef script::ScriptValue<MediaSessionActionHandler>::Reference |
| MediaSessionActionHandlerReference; |
| |
| private: |
| typedef base::SmallMap< |
| std::map<MediaSessionAction, MediaSessionActionHandlerReference*>, |
| kMediaSessionActionNumActions> ActionMap; |
| |
| public: |
| explicit MediaSession(MediaSessionClient* client); |
| ~MediaSession() override; |
| |
| scoped_refptr<MediaMetadata> metadata() const { return metadata_; } |
| |
| void set_metadata(scoped_refptr<MediaMetadata> value); |
| |
| MediaSessionPlaybackState playback_state() const { return state_; } |
| |
| void set_playback_state(MediaSessionPlaybackState state); |
| |
| void SetActionHandler(MediaSessionAction action, |
| const MediaSessionActionHandlerHolder& handler); |
| |
| DEFINE_WRAPPABLE_TYPE(MediaSession); |
| void TraceMembers(script::Tracer* tracer) override; |
| |
| private: |
| void MaybeQueueChangeTask(); |
| void OnChanged(); |
| |
| ActionMap action_map_; |
| MediaSessionClient* media_session_client_; |
| scoped_refptr<MediaMetadata> metadata_; |
| MediaSessionPlaybackState state_; |
| scoped_refptr<base::MessageLoopProxy> message_loop_; |
| bool is_change_task_queued_; |
| |
| DISALLOW_COPY_AND_ASSIGN(MediaSession); |
| }; |
| |
| } // namespace media_session |
| } // namespace cobalt |
| #endif // COBALT_MEDIA_SESSION_MEDIA_SESSION_H_ |