content/browser/media/media_web_contents_observer.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_MEDIA_MEDIA_WEB_CONTENTS_OBSERVER_H_
   6 #define CONTENT_BROWSER_MEDIA_MEDIA_WEB_CONTENTS_OBSERVER_H_
   7
   8 #include "base/compiler_specific.h"
   9 #include "base/containers/scoped_ptr_hash_map.h"
  10 #include "content/common/content_export.h"
  11 #include "content/public/browser/web_contents_observer.h"
  12
  13 namespace content {
  14
  15 class BrowserCdmManager;
  16 #if defined(OS_ANDROID)
  17 class BrowserMediaPlayerManager;
  18 #endif  // defined(OS_ANDROID)
  19 class RenderViewHost;
  20
  21 // This class manages all RenderFrame based media related managers at the
  22 // browser side. It receives IPC messages from media RenderFrameObservers and
  23 // forwards them to the corresponding managers. The managers are responsible
  24 // for sending IPCs back to the RenderFrameObservers at the render side.
  25 class CONTENT_EXPORT MediaWebContentsObserver : public WebContentsObserver {
  26  public:
  27   explicit MediaWebContentsObserver(RenderViewHost* render_view_host);
  28   virtual ~MediaWebContentsObserver();
  29
  30   // WebContentsObserver implementations.
  31   virtual void RenderFrameDeleted(RenderFrameHost* render_frame_host) OVERRIDE;
  32   virtual bool OnMessageReceived(const IPC::Message& message,
  33                                  RenderFrameHost* render_frame_host) OVERRIDE;
  34
  35   // Helper function to handle CDM IPC messages. Returns whether the |message|
  36   // is handled in the function.
  37   bool OnCdmMessageReceived(const IPC::Message& message,
  38                             RenderFrameHost* render_frame_host);
  39
  40   // Gets the CDM manager associated with |render_frame_host|. Creates
  41   // a new one if it doesn't exist. The caller doesn't own the returned pointer.
  42   BrowserCdmManager* GetCdmManager(RenderFrameHost* render_frame_host);
  43
  44 #if defined(OS_ANDROID)
  45   // Helper functions to handle media player IPC messages. Returns whether the
  46   // |message| is handled in the function.
  47   bool OnMediaPlayerMessageReceived(const IPC::Message& message,
  48                                     RenderFrameHost* render_frame_host);
  49   bool OnMediaPlayerSetCdmMessageReceived(const IPC::Message& message,
  50                                           RenderFrameHost* render_frame_host);
  51
  52   // Gets the media player manager associated with |render_frame_host|. Creates
  53   // a new one if it doesn't exist. The caller doesn't own the returned pointer.
  54   BrowserMediaPlayerManager* GetMediaPlayerManager(
  55       RenderFrameHost* render_frame_host);
  56
  57   void OnSetCdm(RenderFrameHost* render_frame_host, int player_id, int cdm_id);
  58
  59   // Pauses all media player.
  60   void PauseVideo();
  61
  62 #if defined(VIDEO_HOLE)
  63   void OnFrameInfoUpdated();
  64 #endif  // defined(VIDEO_HOLE)
  65
  66 #endif  // defined(OS_ANDROID)
  67
  68  private:
  69   // Map from RenderFrameHost* to BrowserCdmManager.
  70   typedef base::ScopedPtrHashMap<uintptr_t, BrowserCdmManager> CdmManagerMap;
  71   CdmManagerMap cdm_managers_;
  72
  73 #if defined(OS_ANDROID)
  74   // Map from RenderFrameHost* to BrowserMediaPlayerManager.
  75   typedef base::ScopedPtrHashMap<uintptr_t, BrowserMediaPlayerManager>
  76       MediaPlayerManagerMap;
  77   MediaPlayerManagerMap media_player_managers_;
  78 #endif  // defined(OS_ANDROID)
  79
  80   DISALLOW_COPY_AND_ASSIGN(MediaWebContentsObserver);
  81 };
  82
  83 }  // namespace content
  84
  85 #endif  // CONTENT_BROWSER_MEDIA_MEDIA_WEB_CONTENTS_OBSERVER_H_