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/*
* 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/v8/ScriptWrappable.h"
#include "core/dom/ContextLifecycleObserver.h"
#include "core/events/EventTarget.h"
#include "platform/Timer.h"
#include "platform/drm/ContentDecryptionModuleSession.h"
#include "wtf/Deque.h"
#include "wtf/PassRefPtr.h"
#include "wtf/RefCounted.h"
#include "wtf/Uint8Array.h"
#include "wtf/text/WTFString.h"
namespace WebCore {
class ContentDecryptionModule;
class ContentDecryptionModuleSession;
class ExceptionState;
class GenericEventQueue;
class MediaKeyError;
class MediaKeys;
// References are held by JS and MediaKeys.
// Because this object controls the lifetime of the ContentDecryptionModuleSession,
// it may outlive any references to it as long as the MediaKeys object is alive.
// The ContentDecryptionModuleSession has the same lifetime as this object.
class MediaKeySession
: public RefCounted<MediaKeySession>, public ScriptWrappable, public EventTargetWithInlineData, public ContextLifecycleObserver
, private ContentDecryptionModuleSessionClient {
REFCOUNTED_EVENT_TARGET(MediaKeySession);
public:
static PassRefPtr<MediaKeySession> create(ExecutionContext*, ContentDecryptionModule*, MediaKeys*);
~MediaKeySession();
const String& keySystem() const { return m_keySystem; }
String sessionId() const;
void setError(MediaKeyError*);
MediaKeyError* error() { return m_error.get(); }
void generateKeyRequest(const String& mimeType, Uint8Array* initData);
void update(Uint8Array* key, ExceptionState&);
void close();
void enqueueEvent(PassRefPtr<Event>);
DEFINE_ATTRIBUTE_EVENT_LISTENER(webkitkeyadded);
DEFINE_ATTRIBUTE_EVENT_LISTENER(webkitkeyerror);
DEFINE_ATTRIBUTE_EVENT_LISTENER(webkitkeymessage);
virtual const AtomicString& interfaceName() const OVERRIDE;
virtual ExecutionContext* executionContext() const OVERRIDE;
private:
MediaKeySession(ExecutionContext*, ContentDecryptionModule*, MediaKeys*);
void keyRequestTimerFired(Timer<MediaKeySession>*);
void addKeyTimerFired(Timer<MediaKeySession>*);
// ContentDecryptionModuleSessionClient
virtual void keyAdded() OVERRIDE;
virtual void keyError(MediaKeyErrorCode, unsigned long systemCode) OVERRIDE;
virtual void keyMessage(const unsigned char* message, size_t messageLength, const KURL& destinationURL) OVERRIDE;
String m_keySystem;
RefPtr<MediaKeyError> m_error;
OwnPtr<GenericEventQueue> m_asyncEventQueue;
OwnPtr<ContentDecryptionModuleSession> m_session;
// Used to remove the reference from the parent MediaKeys when close()'d.
MediaKeys* m_keys;
struct PendingKeyRequest {
PendingKeyRequest(const String& mimeType, Uint8Array* initData) : mimeType(mimeType), initData(initData) { }
String mimeType;
RefPtr<Uint8Array> initData;
};
Deque<PendingKeyRequest> m_pendingKeyRequests;
Timer<MediaKeySession> m_keyRequestTimer;
Deque<RefPtr<Uint8Array> > m_pendingKeys;
Timer<MediaKeySession> m_addKeyTimer;
};
}
#endif // MediaKeySession_h
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