Separate BrowserCdmManager from BrowserMediaPlayerManager.

content/browser/media/android/browser_cdm_manager.h

+// Copyright 2014 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_MEDIA_ANDROID_BROWSER_CDM_MANAGER_H_
+#define CONTENT_BROWSER_MEDIA_ANDROID_BROWSER_CDM_MANAGER_H_
+
+#include <map>
+#include <string>
+#include <vector>
+
+#include "base/basictypes.h"
+#include "base/callback.h"
+#include "base/memory/scoped_ptr.h"
+#include "content/common/content_export.h"
+#include "content/common/media/cdm_messages_enums.h"
+#include "ipc/ipc_message.h"
+// TODO(xhwang): Drop this when KeyError is moved to a common header.
+#include "media/base/media_keys.h"
+#include "url/gurl.h"
+
+namespace media {
+class BrowserCdm;
+}
+
+namespace content {
+
+class RenderFrameHost;
+class WebContents;
+
+// This class manages all CDM objects. It receives control operations from the
+// the render process, and forwards them to corresponding CDM object. Callbacks
+// from CDM objects are converted to IPCs and then sent to the render process.
+class CONTENT_EXPORT BrowserCdmManager {
+ public:
+  // Creates a new BrowserCdmManager for |rfh|.
+  static BrowserCdmManager* Create(RenderFrameHost* rfh);
+
+  ~BrowserCdmManager();
+
+  media::BrowserCdm* GetCdm(int cdm_id);
+
+  // CDM callbacks.
+  void OnSessionCreated(int cdm_id,
+                        uint32 session_id,
+                        const std::string& web_session_id);
+  void OnSessionMessage(int cdm_id,
+                        uint32 session_id,
+                        const std::vector<uint8>& message,
+                        const GURL& destination_url);
+  void OnSessionReady(int cdm_id, uint32 session_id);
+  void OnSessionClosed(int cdm_id, uint32 session_id);
+  void OnSessionError(int cdm_id,
+                      uint32 session_id,
+                      media::MediaKeys::KeyError error_code,
+                      uint32 system_code);
+
+  // Message handlers.
+  void OnInitializeCdm(int cdm_id,
+                       const std::string& key_system,
+                       const GURL& frame_url);
+  void OnCreateSession(int cdm_id,
+                       uint32 session_id,
+                       CdmHostMsg_CreateSession_ContentType content_type,
+                       const std::vector<uint8>& init_data);
+  void OnUpdateSession(int cdm_id,
+                       uint32 session_id,
+                       const std::vector<uint8>& response);
+  void OnReleaseSession(int cdm_id, uint32 session_id);
+  void OnSetCdm(int player_id, int cdm_id);
+  void OnDestroyCdm(int cdm_id);
+
+ private:
+  // Clients must use Create() or subclass constructor.
+  explicit BrowserCdmManager(RenderFrameHost* render_frame_host);
+
+  // Cancels all pending session creations associated with |cdm_id|.
+  void CancelAllPendingSessionCreations(int cdm_id);
+
+  // Adds a new CDM identified by |cdm_id| for the given |key_system| and
+  // |security_origin|.
+  void AddCdm(int cdm_id,
+              const std::string& key_system,
+              const GURL& security_origin);
+
+  // Removes the CDM with the specified id.
+  void RemoveCdm(int cdm_id);
+
+  int RoutingID();
+
+  // Helper function to send messages to RenderFrameObserver.
+  bool Send(IPC::Message* msg);
+
+  // If |permitted| is false, it does nothing but send
+  // |CdmMsg_SessionError| IPC message.
+  // The primary use case is infobar permission callback, i.e., when infobar
+  // can decide user's intention either from interacting with the actual info
+  // bar or from the saved preference.
+  void CreateSessionIfPermitted(int cdm_id,
+                                uint32 session_id,
+                                const std::string& content_type,
+                                const std::vector<uint8>& init_data,
+                                bool permitted);
+
+  RenderFrameHost* const render_frame_host_;
+
+  WebContents* const web_contents_;
+
+  // A map from CDM IDs to managed CDMs.
+  // TODO(xhwang): Use ScopedPtrHashMap for CdmMap.
+  typedef std::map<int, media::BrowserCdm*> CdmMap;
+  CdmMap cdm_map_;
+
+  // Map from CDM ID to CDM's security origin.
+  std::map<int, GURL> cdm_security_origin_map_;
+
+  // NOTE: Weak pointers must be invalidated before all other member variables.
+  base::WeakPtrFactory<BrowserCdmManager> weak_ptr_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(BrowserCdmManager);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_MEDIA_ANDROID_BROWSER_CDM_MANAGER_H_