| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CONTENT_BROWSER_MEDIA_SESSION_AUDIO_FOCUS_DELEGATE_H_ |
| #define CONTENT_BROWSER_MEDIA_SESSION_AUDIO_FOCUS_DELEGATE_H_ |
| |
| #include "services/media_session/public/mojom/audio_focus.mojom.h" |
| |
| namespace content { |
| |
| class MediaSessionImpl; |
| |
| // AudioFocusDelegate is an interface abstracting audio focus handling for the |
| // MediaSession class. |
| class AudioFocusDelegate { |
| public: |
| // Factory method returning an implementation of AudioFocusDelegate. |
| static std::unique_ptr<AudioFocusDelegate> Create( |
| MediaSessionImpl* media_session); |
| |
| virtual ~AudioFocusDelegate() = default; |
| |
| enum class AudioFocusResult { |
| kSuccess, |
| kFailed, |
| kDelayed, |
| }; |
| |
| virtual AudioFocusResult RequestAudioFocus( |
| media_session::mojom::AudioFocusType audio_focus_type) = 0; |
| virtual void AbandonAudioFocus() = 0; |
| |
| // Retrieves the current |AudioFocusType| for the associated |MediaSession|. |
| virtual base::Optional<media_session::mojom::AudioFocusType> |
| GetCurrentFocusType() const = 0; |
| |
| // |MediaSession| should call this when it's state changes. |
| virtual void MediaSessionInfoChanged( |
| media_session::mojom::MediaSessionInfoPtr) = 0; |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_MEDIA_SESSION_AUDIO_FOCUS_DELEGATE_H_ |