text: // 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_PEPPER_PLAYER_DELEGATE_H_
  #define CONTENT_BROWSER_MEDIA_SESSION_PEPPER_PLAYER_DELEGATE_H_
  
  #include <stdint.h>
  
  #include "base/macros.h"
  #include "content/browser/media/session/media_session_player_observer.h"
  
  namespace content {
  
  class RenderFrameHost;
  
  class PepperPlayerDelegate : public MediaSessionPlayerObserver {
   public:
    // The Id can only be 0 for PepperPlayerDelegate. Declare the constant here so
    // it can be used elsewhere.
    static const int kPlayerId;
  
    PepperPlayerDelegate(RenderFrameHost* render_frame_host, int32_t pp_instance);
    ~PepperPlayerDelegate() override;
  
    // MediaSessionPlayerObserver implementation.
    void OnSuspend(int player_id) override;
    void OnResume(int player_id) override;
    void OnSetVolumeMultiplier(int player_id,
                               double volume_multiplier) override;
    RenderFrameHost* render_frame_host() const override;
  
   private:
    void SetVolume(int player_id, double volume);
  
    RenderFrameHost* render_frame_host_;
    int32_t pp_instance_;
  
    DISALLOW_COPY_AND_ASSIGN(PepperPlayerDelegate);
  };
  
  }  // namespace content
  
  #endif  // CONTENT_BROWSER_MEDIA_SESSION_PEPPER_PLAYER_DELEGATE_H_
  