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_