| // 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_RENDERER_MEDIA_CDM_SESSION_ADAPTER_H_ |
| #define CONTENT_RENDERER_MEDIA_CDM_SESSION_ADAPTER_H_ |
| |
| #include <map> |
| |
| #include "base/basictypes.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/weak_ptr.h" |
| #include "media/base/media_keys.h" |
| #include "third_party/WebKit/public/platform/WebContentDecryptionModuleSession.h" |
| |
| #if defined(ENABLE_PEPPER_CDMS) |
| #include "content/renderer/media/crypto/pepper_cdm_wrapper.h" |
| #endif |
| |
| class GURL; |
| |
| namespace content { |
| |
| #if defined(OS_ANDROID) |
| class RendererCdmManager; |
| #endif |
| class WebContentDecryptionModuleSessionImpl; |
| |
| // Owns the CDM instance and makes calls from session objects to the CDM. |
| // Forwards the session ID-based callbacks of the MediaKeys interface to the |
| // appropriate session object. Callers should hold references to this class |
| // as long as they need the CDM instance. |
| class CdmSessionAdapter : public base::RefCounted<CdmSessionAdapter> { |
| public: |
| CdmSessionAdapter(); |
| |
| // Returns true on success. |
| bool Initialize( |
| #if defined(ENABLE_PEPPER_CDMS) |
| const CreatePepperCdmCB& create_pepper_cdm_cb, |
| #elif defined(OS_ANDROID) |
| RendererCdmManager* manager, |
| #endif |
| const std::string& key_system, |
| const GURL& security_origin); |
| |
| // Creates a new session and adds it to the internal map. The caller owns the |
| // created session. RemoveSession() must be called when destroying it. |
| WebContentDecryptionModuleSessionImpl* CreateSession( |
| blink::WebContentDecryptionModuleSession::Client* client); |
| |
| // Removes a session from the internal map. |
| void RemoveSession(uint32 session_id); |
| |
| // Initializes the session specified by |session_id| with the |content_type| |
| // and |init_data| provided. |
| void InitializeNewSession(uint32 session_id, |
| const std::string& content_type, |
| const uint8* init_data, |
| int init_data_length); |
| |
| // Updates the session specified by |session_id| with |response|. |
| void UpdateSession(uint32 session_id, |
| const uint8* response, |
| int response_length); |
| |
| // Releases the session specified by |session_id|. |
| void ReleaseSession(uint32 session_id); |
| |
| // Returns the Decryptor associated with this CDM. May be NULL if no |
| // Decryptor is associated with the MediaKeys object. |
| // TODO(jrummell): Figure out lifetimes, as WMPI may still use the decryptor |
| // after WebContentDecryptionModule is freed. http://crbug.com/330324 |
| media::Decryptor* GetDecryptor(); |
| |
| #if defined(OS_ANDROID) |
| // Returns the CDM ID associated with the |media_keys_|. May be kInvalidCdmId |
| // if no CDM ID is associated. |
| int GetCdmId() const; |
| #endif |
| |
| private: |
| friend class base::RefCounted<CdmSessionAdapter>; |
| typedef std::map<uint32, WebContentDecryptionModuleSessionImpl*> SessionMap; |
| |
| ~CdmSessionAdapter(); |
| |
| // Callbacks for firing session events. |
| void OnSessionCreated(uint32 session_id, const std::string& web_session_id); |
| void OnSessionMessage(uint32 session_id, |
| const std::vector<uint8>& message, |
| const GURL& destination_url); |
| void OnSessionReady(uint32 session_id); |
| void OnSessionClosed(uint32 session_id); |
| void OnSessionError(uint32 session_id, |
| media::MediaKeys::KeyError error_code, |
| uint32 system_code); |
| |
| // Helper function of the callbacks. |
| WebContentDecryptionModuleSessionImpl* GetSession(uint32 session_id); |
| |
| // Session ID should be unique per renderer process for debugging purposes. |
| static uint32 next_session_id_; |
| |
| scoped_ptr<media::MediaKeys> media_keys_; |
| |
| SessionMap sessions_; |
| |
| #if defined(OS_ANDROID) |
| int cdm_id_; |
| #endif |
| |
| // NOTE: Weak pointers must be invalidated before all other member variables. |
| base::WeakPtrFactory<CdmSessionAdapter> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(CdmSessionAdapter); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_RENDERER_MEDIA_CDM_SESSION_ADAPTER_H_ |