Implement out-of-band video compositing on Android: Step 1

content/browser/android/media_player_manager_android.h

 // Copyright (c) 2012 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_ANDROID_MEDIA_PLAYER_MANAGER_ANDROID_H_
 #define CONTENT_BROWSER_ANDROID_MEDIA_PLAYER_MANAGER_ANDROID_H_
 
 #include <map>
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/time.h"
 #include "content/browser/android/content_video_view.h"
 #include "content/public/browser/render_view_host_observer.h"
 #include "media/base/android/media_player_bridge.h"
 #include "media/base/android/media_player_bridge_manager.h"
 
 namespace content {
 
+class ExternalVideoSurfaceViewHolder;
+
 // This class manages all the MediaPlayerBridge objects. It receives
 // control operations from the the render process, and forwards
 // them to corresponding MediaPlayerBridge object. Callbacks from
 // MediaPlayerBridge objects are converted to IPCs and then sent to the
 // render process.
 class MediaPlayerManagerAndroid
     : public RenderViewHostObserver,
       public media::MediaPlayerBridgeManager {
  public:
   // Create a MediaPlayerManagerAndroid object for the |render_view_host|.
@@ skipping 23 matching lines @@
   void OnError(int player_id, int error);
   void OnVideoSizeChanged(int player_id, int width, int height);
 
   // media::MediaPlayerBridgeManager overrides.
   virtual void RequestMediaResources(media::MediaPlayerBridge* player) OVERRIDE;
   virtual void ReleaseMediaResources(media::MediaPlayerBridge* player) OVERRIDE;
 
   // Release all the players managed by this object.
   void DestroyAllMediaPlayers();
 
+  // External surface video rendering.
+  void SetExternalVideoSurfaceViewHolder(
+      ExternalVideoSurfaceViewHolder* holder);
+
   media::MediaPlayerBridge* GetFullscreenPlayer();
   media::MediaPlayerBridge* GetPlayer(int player_id);
 
  private:
   // Message handlers.
   void OnEnterFullscreen(int player_id);
   void OnExitFullscreen(int player_id);
   void OnInitialize(int player_id, const std::string& url,
                     const std::string& first_party_for_cookies);
   void OnStart(int player_id);
   void OnSeek(int player_id, base::TimeDelta time);
   void OnPause(int player_id);
   void OnReleaseResources(int player_id);
   void OnDestroyPlayer(int player_id);
+  void OnRequestExternalSurface(int player_id);
 
   // An array of managed players.
   ScopedVector<media::MediaPlayerBridge> players_;
 
   // The fullscreen video view object.
   ContentVideoView video_view_;
 
   // Player ID of the fullscreen media player.
   int fullscreen_player_id_;
 
+  // Player ID of the user of the external video surface.
+  int external_video_surface_user_id_;

[ycheo, 2013/03/14 09:45:52]

IMO, it would be better that this variable is managed in
ExternalVideoSurfaceViewHolder and you can add some method like isOwner() to
check if it is the current user.

[wonsik, 2013/03/14 10:57:01]

Done.

+
+  ExternalVideoSurfaceViewHolder* external_video_surface_view_holder_;
+
   DISALLOW_COPY_AND_ASSIGN(MediaPlayerManagerAndroid);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_ANDROID_MEDIA_PLAYER_MANAGER_ANDROID_H_