| // 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_DOM_AUDIO_TRACK_H_ |
| #define COBALT_DOM_AUDIO_TRACK_H_ |
| |
| #include <string> |
| |
| #include "cobalt/dom/track_base.h" |
| #include "cobalt/script/wrappable.h" |
| |
| namespace cobalt { |
| namespace dom { |
| |
| class SourceBuffer; |
| |
| // The AudioTrack interface holds attributes of an audio track. |
| // https://www.w3.org/TR/html51/semantics-embedded-content.html#audiotrack-audiotrack |
| class AudioTrack : public TrackBase { |
| public: |
| // Custom, not in any spec. |
| // |
| AudioTrack(const std::string& id, const std::string& kind, |
| const std::string& label, const std::string& language, |
| bool enabled) |
| : TrackBase(id, kind, label, language, &AudioTrack::IsValidKind), |
| enabled_(enabled) {} |
| |
| // Web API: AudioTrack |
| // |
| using TrackBase::id; |
| using TrackBase::kind; |
| using TrackBase::label; |
| using TrackBase::language; |
| bool enabled() const { return enabled_; } |
| void set_enabled(bool enabled) { |
| if (enabled_ == enabled) { |
| return; |
| } |
| enabled_ = enabled; |
| if (media_element_) { |
| // TODO: Notify the media element. |
| // media_element_->OnAudioTrackChanged(this); |
| NOTREACHED(); |
| } |
| } |
| |
| // Custom, not in any spec. |
| // |
| static bool IsValidKind(const char* kind) { |
| // https://www.w3.org/TR/html51/semantics-embedded-content.html#dom-audiotrack-audiotrackkind |
| return strcmp(kind, "alternative") == 0 || |
| strcmp(kind, "descriptions") == 0 || |
| strcmp(kind, "main") == 0 || |
| strcmp(kind, "main-desc") == 0 || |
| strcmp(kind, "translation") == 0 || |
| strcmp(kind, "commentary") == 0 || |
| strlen(kind) == 0; |
| } |
| |
| DEFINE_WRAPPABLE_TYPE(AudioTrack); |
| |
| private: |
| bool enabled_; |
| }; |
| |
| } // namespace dom |
| } // namespace cobalt |
| |
| #endif // COBALT_DOM_AUDIO_TRACK_H_ |