Move android mediaplayer from render process to browser process.

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/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 {
+
+// 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|.
+  explicit MediaPlayerManagerAndroid(RenderViewHost* render_view_host);
+  virtual ~MediaPlayerManagerAndroid();
+
+  // RenderViewHostObserver overrides.
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+
+  // An internal method that checks for current time routinely and generates
+  // time update events.
+  void OnTimeUpdate(int player_id, base::TimeDelta current_time);
+
+  // Callbacks needed by media::MediaPlayerBridge.
+  void OnPrepared(int player_id, base::TimeDelta duration);
+  void OnPlaybackComplete(int player_id);
+  void OnBufferingUpdate(int player_id, int percentage);
+  void OnSeekComplete(int player_id, base::TimeDelta current_time);
+  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();
+
+  media::MediaPlayerBridge* GetPlayer(int player_id);
+
+ private:
+  // Message handlers.
+  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);
+
+  // An array of managed players.
+  ScopedVector<media::MediaPlayerBridge> players_;
+
+  DISALLOW_COPY_AND_ASSIGN(MediaPlayerManagerAndroid);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_ANDROID_MEDIA_PLAYER_MANAGER_ANDROID_H_