| /* |
| * Copyright (C) 2013 Apple Inc. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS |
| * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| * THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef MediaKeySession_h |
| #define MediaKeySession_h |
| |
| #include "bindings/core/v8/ScriptPromiseProperty.h" |
| #include "core/dom/ActiveDOMObject.h" |
| #include "core/dom/DOMException.h" |
| #include "modules/EventTargetModules.h" |
| #include "platform/Timer.h" |
| #include "platform/heap/Handle.h" |
| #include "public/platform/WebContentDecryptionModuleSession.h" |
| #include "wtf/Forward.h" |
| |
| namespace blink { |
| |
| class ScriptPromise; |
| class ScriptState; |
| class GenericEventQueue; |
| class MediaKeyError; |
| class MediaKeys; |
| class WebContentDecryptionModule; |
| class WebString; |
| |
| // References are held by JS only. However, even if all JS references are |
| // dropped, it won't be garbage collected until close event received or |
| // MediaKeys goes away (as determined by the validity of a WeakPtr). This allows |
| // the CDM to continue to fire events for this session, as long as the session |
| // is open. |
| // |
| // WeakPtr<MediaKeys> is used instead of having MediaKeys and MediaKeySession |
| // keep references to each other, and then having to inform the other object |
| // when it gets destroyed. |
| // |
| // Because this object controls the lifetime of the WebContentDecryptionModuleSession, |
| // it may outlive any JavaScript references as long as the MediaKeys object is alive. |
| // The WebContentDecryptionModuleSession has the same lifetime as this object. |
| class MediaKeySession FINAL |
| : public RefCountedGarbageCollectedWillBeGarbageCollectedFinalized<MediaKeySession>, public ActiveDOMObject, public EventTargetWithInlineData |
| , private WebContentDecryptionModuleSession::Client { |
| DEFINE_EVENT_TARGET_REFCOUNTING_WILL_BE_REMOVED(RefCountedGarbageCollected<MediaKeySession>); |
| WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(MediaKeySession); |
| public: |
| static ScriptPromise create(ScriptState*, MediaKeys*, const String& initDataType, PassRefPtr<ArrayBuffer> initData, const String& sessionType); |
| virtual ~MediaKeySession(); |
| |
| const String& keySystem() const { return m_keySystem; } |
| String sessionId() const; |
| ScriptPromise closed(ScriptState*); |
| |
| void setError(MediaKeyError*); |
| MediaKeyError* error() { return m_error.get(); } |
| |
| ScriptPromise update(ScriptState*, ArrayBuffer* response); |
| ScriptPromise update(ScriptState*, ArrayBufferView* response); |
| ScriptPromise release(ScriptState*); |
| |
| void enqueueEvent(PassRefPtrWillBeRawPtr<Event>); |
| |
| // EventTarget |
| virtual const AtomicString& interfaceName() const OVERRIDE; |
| virtual ExecutionContext* executionContext() const OVERRIDE; |
| |
| // ActiveDOMObject |
| virtual bool hasPendingActivity() const OVERRIDE; |
| virtual void stop() OVERRIDE; |
| |
| virtual void trace(Visitor*) OVERRIDE; |
| |
| private: |
| class PendingAction; |
| friend class MediaKeySessionInitializer; |
| |
| MediaKeySession(ExecutionContext*, MediaKeys*, PassOwnPtr<WebContentDecryptionModuleSession>); |
| void actionTimerFired(Timer<MediaKeySession>*); |
| |
| // WebContentDecryptionModuleSession::Client |
| virtual void message(const unsigned char* message, size_t messageLength, const WebURL& destinationURL) OVERRIDE; |
| virtual void ready() OVERRIDE; |
| virtual void close() OVERRIDE; |
| virtual void error(MediaKeyErrorCode, unsigned long systemCode) OVERRIDE; |
| virtual void error(WebContentDecryptionModuleException, unsigned long systemCode, const WebString& errorMessage) OVERRIDE; |
| |
| ScriptPromise updateInternal(ScriptState*, PassRefPtr<ArrayBuffer> response); |
| |
| String m_keySystem; |
| RefPtrWillBeMember<MediaKeyError> m_error; |
| OwnPtrWillBeMember<GenericEventQueue> m_asyncEventQueue; |
| OwnPtr<WebContentDecryptionModuleSession> m_session; |
| |
| // Used to determine if MediaKeys is still active. |
| WeakMember<MediaKeys> m_keys; |
| |
| // Is the CDM finished with this session? |
| bool m_isClosed; |
| |
| // Keep track of the closed promise. |
| typedef ScriptPromiseProperty<Member<MediaKeySession>, V8UndefinedType, RefPtrWillBeMember<DOMException> > ClosedPromise; |
| Member<ClosedPromise> m_closedPromise; |
| |
| HeapDeque<Member<PendingAction> > m_pendingActions; |
| Timer<MediaKeySession> m_actionTimer; |
| }; |
| |
| } // namespace blink |
| |
| #endif // MediaKeySession_h |