// Copyright 2015 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_MEDIA_SESSION_OBSERVER_H_
#define CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_OBSERVER_H_

namespace content {

class MediaSessionObserver {
 public:
  MediaSessionObserver() = default;
  virtual ~MediaSessionObserver() = default;

  // The given |player_id| has been suspended by the MediaSession.
  virtual void OnSuspend(int player_id) = 0;

  // The given |player_id| has been resumed by the MediaSession.
  virtual void OnResume(int player_id) = 0;

  // The given |player_id| has been set a new volume multiplier by
  // the MediaSession.
  virtual void OnSetVolumeMultiplier(int player_id,
                                     double volume_multiplier) = 0;
};

}  // namespace content

#endif // CONTENT_BROWSER_MEDIA_SESSION_MEDIA_SESSION_OBSERVER_H_