// 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 #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 { 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 { public: CdmSessionAdapter(); // Returns true on success. bool Initialize( #if defined(ENABLE_PEPPER_CDMS) const CreatePepperCdmCB& create_pepper_cdm_cb, #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; typedef std::map 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& message, const std::string& 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_keys_; SessionMap sessions_; #if defined(OS_ANDROID) int cdm_id_; #endif // NOTE: Weak pointers must be invalidated before all other member variables. base::WeakPtrFactory weak_ptr_factory_; DISALLOW_COPY_AND_ASSIGN(CdmSessionAdapter); }; } // namespace content #endif // CONTENT_RENDERER_MEDIA_CDM_SESSION_ADAPTER_H_