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_CDM_BROWSER_CDM_MANAGER_H_ 6 #define CONTENT_BROWSER_MEDIA_CDM_BROWSER_CDM_MANAGER_H_ 7 8 #include <map> 9 #include <string> 10 #include <vector> 11 12 #include "base/basictypes.h" 13 #include "base/callback.h" 14 #include "base/containers/scoped_ptr_hash_map.h" 15 #include "base/memory/scoped_ptr.h" 16 #include "content/common/content_export.h" 17 #include "content/common/media/cdm_messages_enums.h" 18 #include "content/public/browser/browser_message_filter.h" 19 #include "ipc/ipc_message.h" 20 // TODO(xhwang): Drop this when KeyError is moved to a common header. 21 #include "media/base/media_keys.h" 22 #include "url/gurl.h" 23 24 namespace media { 25 class BrowserCdm; 26 } 27 28 namespace content { 29 30 // This class manages all CDM objects. It receives control operations from the 31 // the render process, and forwards them to corresponding CDM object. Callbacks 32 // from CDM objects are converted to IPCs and then sent to the render process. 33 class CONTENT_EXPORT BrowserCdmManager : public BrowserMessageFilter { 34 public: 35 // Returns the BrowserCdmManager associated with the |render_process_id|. 36 // Returns NULL if no BrowserCdmManager is associated. 37 static BrowserCdmManager* FromProcess(int render_process_id); 38 39 // Constructs the BrowserCdmManager for |render_process_id| which runs on 40 // |task_runner|. 41 // If |task_runner| is not NULL, all CDM messages are posted to it. Otherwise, 42 // all messages are posted to the browser UI thread. 43 BrowserCdmManager(int render_process_id, 44 const scoped_refptr<base::TaskRunner>& task_runner); 45 46 // BrowserMessageFilter implementations. 47 virtual void OnDestruct() const OVERRIDE; 48 virtual base::TaskRunner* OverrideTaskRunnerForMessage( 49 const IPC::Message& message) OVERRIDE; 50 virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE; 51 52 media::BrowserCdm* GetCdm(int render_frame_id, int cdm_id); 53 54 // Notifies that the render frame has been deleted so that all CDMs belongs 55 // to this render frame needs to be destroyed as well. This is needed because 56 // in some cases (e.g. fast termination of the renderer), the message to 57 // destroy the CDM will not be received. 58 void RenderFrameDeleted(int render_frame_id); 59 60 protected: 61 friend class base::RefCountedThreadSafe<BrowserCdmManager>; 62 friend class base::DeleteHelper<BrowserCdmManager>; 63 virtual ~BrowserCdmManager(); 64 65 private: 66 // CDM callbacks. 67 void OnSessionCreated(int render_frame_id, 68 int cdm_id, 69 uint32 session_id, 70 const std::string& web_session_id); 71 void OnSessionMessage(int render_frame_id, 72 int cdm_id, 73 uint32 session_id, 74 const std::vector<uint8>& message, 75 const GURL& destination_url); 76 void OnSessionReady(int render_frame_id, int cdm_id, uint32 session_id); 77 void OnSessionClosed(int render_frame_id, int cdm_id, uint32 session_id); 78 void OnSessionError(int render_frame_id, 79 int cdm_id, 80 uint32 session_id, 81 media::MediaKeys::KeyError error_code, 82 uint32 system_code); 83 84 // Message handlers. 85 void OnInitializeCdm(int render_frame_id, 86 int cdm_id, 87 const std::string& key_system, 88 const GURL& frame_url); 89 void OnCreateSession(int render_frame_id, 90 int cdm_id, 91 uint32 session_id, 92 CdmHostMsg_CreateSession_ContentType content_type, 93 const std::vector<uint8>& init_data); 94 void OnUpdateSession(int render_frame_id, 95 int cdm_id, 96 uint32 session_id, 97 const std::vector<uint8>& response); 98 void OnReleaseSession(int render_frame_id, 99 int cdm_id, uint32 session_id); 100 void OnDestroyCdm(int render_frame_id, int cdm_id); 101 102 void SendSessionError(int render_frame_id, int cdm_id, uint32 session_id); 103 104 // Adds a new CDM identified by |cdm_id| for the given |key_system| and 105 // |security_origin|. 106 void AddCdm(int render_frame_id, 107 int cdm_id, 108 const std::string& key_system, 109 const GURL& security_origin); 110 111 // Removes the CDM with the specified id. 112 void RemoveCdm(uint64 id); 113 114 // If |permitted| is false, it does nothing but send 115 // |CdmMsg_SessionError| IPC message. 116 // The primary use case is infobar permission callback, i.e., when infobar 117 // can decide user's intention either from interacting with the actual info 118 // bar or from the saved preference. 119 void CreateSessionIfPermitted(int render_frame_id, 120 int cdm_id, 121 uint32 session_id, 122 const std::string& content_type, 123 const std::vector<uint8>& init_data, 124 bool permitted); 125 126 const int render_process_id_; 127 128 // TaskRunner to dispatch all CDM messages to. If it's NULL, all messages are 129 // dispatched to the browser UI thread. 130 scoped_refptr<base::TaskRunner> task_runner_; 131 132 // The key in the following maps is a combination of |render_frame_id| and 133 // |cdm_id|. 134 135 // Map of managed BrowserCdms. 136 typedef base::ScopedPtrHashMap<uint64, media::BrowserCdm> CdmMap; 137 CdmMap cdm_map_; 138 139 // Map of CDM's security origin. 140 std::map<uint64, GURL> cdm_security_origin_map_; 141 142 // Map of callbacks to cancel the permission request. 143 std::map<uint64, base::Closure> cdm_cancel_permission_map_; 144 145 DISALLOW_COPY_AND_ASSIGN(BrowserCdmManager); 146 }; 147 148 } // namespace content 149 150 #endif // CONTENT_BROWSER_MEDIA_CDM_BROWSER_CDM_MANAGER_H_ 151
