| // 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_CDM_BROWSER_CDM_MANAGER_H_ |
| #define CONTENT_BROWSER_MEDIA_CDM_BROWSER_CDM_MANAGER_H_ |
| |
| #include <map> |
| #include <string> |
| #include <vector> |
| |
| #include "base/basictypes.h" |
| #include "base/callback.h" |
| #include "base/containers/scoped_ptr_hash_map.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "content/common/content_export.h" |
| #include "content/common/media/cdm_messages_enums.h" |
| #include "content/public/browser/browser_message_filter.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 { |
| |
| // 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 BrowserMessageFilter { |
| public: |
| // Returns the BrowserCdmManager associated with the |render_process_id|. |
| // Returns NULL if no BrowserCdmManager is associated. |
| static BrowserCdmManager* FromProcess(int render_process_id); |
| |
| // Constructs the BrowserCdmManager for |render_process_id| which runs on |
| // |task_runner|. |
| // If |task_runner| is not NULL, all CDM messages are posted to it. Otherwise, |
| // all messages are posted to the browser UI thread. |
| BrowserCdmManager(int render_process_id, |
| const scoped_refptr<base::TaskRunner>& task_runner); |
| |
| // BrowserMessageFilter implementations. |
| virtual void OnDestruct() const override; |
| virtual base::TaskRunner* OverrideTaskRunnerForMessage( |
| const IPC::Message& message) override; |
| virtual bool OnMessageReceived(const IPC::Message& message) override; |
| |
| media::BrowserCdm* GetCdm(int render_frame_id, int cdm_id); |
| |
| // Notifies that the render frame has been deleted so that all CDMs belongs |
| // to this render frame needs to be destroyed as well. This is needed because |
| // in some cases (e.g. fast termination of the renderer), the message to |
| // destroy the CDM will not be received. |
| void RenderFrameDeleted(int render_frame_id); |
| |
| protected: |
| friend class base::RefCountedThreadSafe<BrowserCdmManager>; |
| friend class base::DeleteHelper<BrowserCdmManager>; |
| virtual ~BrowserCdmManager(); |
| |
| private: |
| // CDM callbacks. |
| void OnSessionCreated(int render_frame_id, |
| int cdm_id, |
| uint32 session_id, |
| const std::string& web_session_id); |
| void OnSessionMessage(int render_frame_id, |
| int cdm_id, |
| uint32 session_id, |
| const std::vector<uint8>& message, |
| const GURL& destination_url); |
| void OnSessionReady(int render_frame_id, int cdm_id, uint32 session_id); |
| void OnSessionClosed(int render_frame_id, int cdm_id, uint32 session_id); |
| void OnSessionError(int render_frame_id, |
| int cdm_id, |
| uint32 session_id, |
| media::MediaKeys::KeyError error_code, |
| uint32 system_code); |
| |
| // Message handlers. |
| void OnInitializeCdm(int render_frame_id, |
| int cdm_id, |
| const std::string& key_system, |
| const GURL& frame_url); |
| void OnCreateSession(int render_frame_id, |
| int cdm_id, |
| uint32 session_id, |
| CdmHostMsg_CreateSession_ContentType content_type, |
| const std::vector<uint8>& init_data); |
| void OnUpdateSession(int render_frame_id, |
| int cdm_id, |
| uint32 session_id, |
| const std::vector<uint8>& response); |
| void OnReleaseSession(int render_frame_id, |
| int cdm_id, uint32 session_id); |
| void OnDestroyCdm(int render_frame_id, int cdm_id); |
| |
| void SendSessionError(int render_frame_id, int cdm_id, uint32 session_id); |
| |
| // Adds a new CDM identified by |cdm_id| for the given |key_system| and |
| // |security_origin|. |
| void AddCdm(int render_frame_id, |
| int cdm_id, |
| const std::string& key_system, |
| const GURL& security_origin); |
| |
| // Removes the CDM with the specified id. |
| void RemoveCdm(uint64 id); |
| |
| // 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 render_frame_id, |
| int cdm_id, |
| uint32 session_id, |
| const std::string& content_type, |
| const std::vector<uint8>& init_data, |
| bool permitted); |
| |
| const int render_process_id_; |
| |
| // TaskRunner to dispatch all CDM messages to. If it's NULL, all messages are |
| // dispatched to the browser UI thread. |
| scoped_refptr<base::TaskRunner> task_runner_; |
| |
| // The key in the following maps is a combination of |render_frame_id| and |
| // |cdm_id|. |
| |
| // Map of managed BrowserCdms. |
| typedef base::ScopedPtrHashMap<uint64, media::BrowserCdm> CdmMap; |
| CdmMap cdm_map_; |
| |
| // Map of CDM's security origin. |
| std::map<uint64, GURL> cdm_security_origin_map_; |
| |
| // Map of callbacks to cancel the permission request. |
| std::map<uint64, base::Closure> cdm_cancel_permission_map_; |
| |
| DISALLOW_COPY_AND_ASSIGN(BrowserCdmManager); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_MEDIA_CDM_BROWSER_CDM_MANAGER_H_ |