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 "base/memory/scoped_ptr.h"
  11 #include "content/common/content_export.h"
  12 #include "content/public/browser/web_contents_observer.h"
  13
  14 namespace content {
  15
  16 #if defined(OS_ANDROID)
  17 class MediaPlayersObserver;
  18 #endif  // defined(OS_ANDROID)
  19
  20 class BrowserCdmManager;
  21 class BrowserMediaPlayerManager;
  22
  23 // This class manages all RenderFrame based media related managers at the
  24 // browser side. It receives IPC messages from media RenderFrameObservers and
  25 // forwards them to the corresponding managers. The managers are responsible
  26 // for sending IPCs back to the RenderFrameObservers at the render side.
  27 class CONTENT_EXPORT MediaWebContentsObserver : public WebContentsObserver {
  28  public:
  29   explicit MediaWebContentsObserver(WebContents* web_contents);
  30   ~MediaWebContentsObserver() override;
  31
  32   // WebContentsObserver implementations.
  33   void RenderFrameDeleted(RenderFrameHost* render_frame_host) override;
  34
  35 #if defined(OS_ANDROID)
  36   bool OnMessageReceived(const IPC::Message& message,
  37                          RenderFrameHost* render_frame_host) override;
  38
  39   // Helper functions to handle media player IPC messages. Returns whether the
  40   // |message| is handled in the function.
  41   bool OnMediaPlayerMessageReceived(const IPC::Message& message,
  42                                     RenderFrameHost* render_frame_host);
  43   bool OnMediaPlayerSetCdmMessageReceived(const IPC::Message& message,
  44                                           RenderFrameHost* render_frame_host);
  45
  46   // Gets the media player manager associated with |render_frame_host|. Creates
  47   // a new one if it doesn't exist. The caller doesn't own the returned pointer.
  48   BrowserMediaPlayerManager* GetMediaPlayerManager(
  49       RenderFrameHost* render_frame_host);
  50
  51   void OnSetCdm(RenderFrameHost* render_frame_host, int player_id, int cdm_id);
  52
  53   MediaPlayersObserver* GetMediaPlayersObserver() const;
  54
  55 #if defined(VIDEO_HOLE)
  56   void OnFrameInfoUpdated();
  57 #endif  // defined(VIDEO_HOLE)
  58
  59  private:
  60   // Map from RenderFrameHost* to BrowserMediaPlayerManager.
  61   typedef base::ScopedPtrHashMap<uintptr_t,
  62                                  scoped_ptr<BrowserMediaPlayerManager>>
  63       MediaPlayerManagerMap;
  64   MediaPlayerManagerMap media_player_managers_;
  65 #endif  // defined(OS_ANDROID)
  66
  67  private:
  68   DISALLOW_COPY_AND_ASSIGN(MediaWebContentsObserver);
  69 };
  70
  71 }  // namespace content
  72
  73 #endif  // CONTENT_BROWSER_MEDIA_MEDIA_WEB_CONTENTS_OBSERVER_H_