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/*
* Copyright (C) 2016 Metrological Group B.V.
* Copyright (C) 2016 Igalia S.L.
*
* 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* HOLDER OR 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.
*/
#pragma once
#if ENABLE(ENCRYPTED_MEDIA)
#include "ActiveDOMObject.h"
#include "CDMInstanceSession.h"
#include "EventTarget.h"
#include "IDLTypes.h"
#include "MediaKeyMessageType.h"
#include "MediaKeySessionType.h"
#include "MediaKeyStatus.h"
#include <wtf/Observer.h>
#include <wtf/RefCounted.h>
#include <wtf/UniqueRef.h>
#include <wtf/Vector.h>
#include <wtf/WeakPtr.h>
#include <wtf/text/WTFString.h>
#if !RELEASE_LOG_DISABLED
namespace WTF {
class Logger;
}
#endif
namespace WebCore {
class BufferSource;
class CDM;
class DeferredPromise;
class MediaKeyStatusMap;
class MediaKeys;
class SharedBuffer;
template<typename IDLType> class DOMPromiseProxy;
class MediaKeySession final : public RefCounted<MediaKeySession>, public EventTarget, public ActiveDOMObject, public CDMInstanceSessionClient {
WTF_MAKE_ISO_ALLOCATED(MediaKeySession);
public:
static Ref<MediaKeySession> create(Document&, WeakPtr<MediaKeys>&&, MediaKeySessionType, bool useDistinctiveIdentifier, Ref<CDM>&&, Ref<CDMInstanceSession>&&);
virtual ~MediaKeySession();
using CDMInstanceSessionClient::weakPtrFactory;
using CDMInstanceSessionClient::WeakValueType;
using CDMInstanceSessionClient::WeakPtrImplType;
using RefCounted<MediaKeySession>::ref;
using RefCounted<MediaKeySession>::deref;
bool isClosed() const { return m_closed; }
const String& sessionId() const;
double expiration() const;
Ref<MediaKeyStatusMap> keyStatuses() const;
void generateRequest(const AtomString&, const BufferSource&, Ref<DeferredPromise>&&);
void load(const String&, Ref<DeferredPromise>&&);
void update(const BufferSource&, Ref<DeferredPromise>&&);
void close(Ref<DeferredPromise>&&);
void remove(Ref<DeferredPromise>&&);
using ClosedPromise = DOMPromiseProxy<IDLUndefined>;
ClosedPromise& closed() { return m_closedPromise.get(); }
const Vector<std::pair<Ref<SharedBuffer>, MediaKeyStatus>>& statuses() const { return m_statuses; }
unsigned internalInstanceSessionObjectRefCount() const { return m_instanceSession->refCount(); }
private:
MediaKeySession(Document&, WeakPtr<MediaKeys>&&, MediaKeySessionType, bool useDistinctiveIdentifier, Ref<CDM>&&, Ref<CDMInstanceSession>&&);
void enqueueMessage(MediaKeyMessageType, const SharedBuffer&);
void updateExpiration(double);
void sessionClosed();
String mediaKeysStorageDirectory() const;
// CDMInstanceSessionClient
void updateKeyStatuses(CDMInstanceSessionClient::KeyStatusVector&&) override;
void sendMessage(CDMMessageType, Ref<SharedBuffer>&& message) final;
void sessionIdChanged(const String&) final;
PlatformDisplayID displayID() final;
// EventTarget
EventTargetInterface eventTargetInterface() const override { return MediaKeySessionEventTargetInterfaceType; }
ScriptExecutionContext* scriptExecutionContext() const override { return ActiveDOMObject::scriptExecutionContext(); }
void refEventTarget() override { ref(); }
void derefEventTarget() override { deref(); }
// ActiveDOMObject
const char* activeDOMObjectName() const final;
bool virtualHasPendingActivity() const final;
void stop() final;
// DisplayChangedObserver
void displayChanged(PlatformDisplayID);
#if !RELEASE_LOG_DISABLED
// LoggerHelper
const Logger& logger() const { return m_logger; }
const char* logClassName() const { return "MediaKeySession"; }
WTFLogChannel& logChannel() const;
const void* logIdentifier() const { return m_logIdentifier; }
Ref<Logger> m_logger;
const void* m_logIdentifier;
#endif
WeakPtr<MediaKeys> m_keys;
String m_sessionId;
double m_expiration;
UniqueRef<ClosedPromise> m_closedPromise;
Ref<MediaKeyStatusMap> m_keyStatuses;
bool m_closed { false };
bool m_uninitialized { true };
bool m_callable { false };
bool m_useDistinctiveIdentifier;
MediaKeySessionType m_sessionType;
Ref<CDM> m_implementation;
Ref<CDMInstanceSession> m_instanceSession;
Vector<Ref<SharedBuffer>> m_recordOfKeyUsage;
double m_firstDecryptTime { 0 };
double m_latestDecryptTime { 0 };
Vector<std::pair<Ref<SharedBuffer>, MediaKeyStatus>> m_statuses;
using DisplayChangedObserver = Observer<void(PlatformDisplayID)>;
DisplayChangedObserver m_displayChangedObserver;
};
} // namespace WebCore
#endif // ENABLE(ENCRYPTED_MEDIA)
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