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/*
* Copyright (C) 2020 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. ``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
* 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(WEB_RTC)
#include "ActiveDOMObject.h"
#include "EventTarget.h"
#include "JSDOMPromiseDeferredForward.h"
#include "RTCRtpSFrameTransformer.h"
#include <wtf/WeakPtr.h>
namespace JSC {
class JSGlobalObject;
};
namespace WebCore {
class CryptoKey;
class RTCRtpTransformBackend;
class ReadableStream;
class SimpleReadableStreamSource;
class WritableStream;
class RTCRtpSFrameTransform : public RefCounted<RTCRtpSFrameTransform>, public ActiveDOMObject, public EventTarget {
WTF_MAKE_ISO_ALLOCATED(RTCRtpSFrameTransform);
public:
enum class Role { Encrypt, Decrypt };
using CompatibilityMode = RTCRtpSFrameTransformer::CompatibilityMode;
struct Options {
Role role { Role::Encrypt };
uint64_t authenticationSize { 10 };
CompatibilityMode compatibilityMode { CompatibilityMode::None };
};
static Ref<RTCRtpSFrameTransform> create(ScriptExecutionContext&, Options);
~RTCRtpSFrameTransform();
void setEncryptionKey(CryptoKey&, std::optional<uint64_t>, DOMPromiseDeferred<void>&&);
bool isAttached() const;
void initializeBackendForReceiver(RTCRtpTransformBackend&);
void initializeBackendForSender(RTCRtpTransformBackend&);
void willClearBackend(RTCRtpTransformBackend&);
WEBCORE_EXPORT void setCounterForTesting(uint64_t);
WEBCORE_EXPORT uint64_t counterForTesting() const;
WEBCORE_EXPORT uint64_t keyIdForTesting() const;
ExceptionOr<RefPtr<ReadableStream>> readable();
ExceptionOr<RefPtr<WritableStream>> writable();
bool hasKey(uint64_t) const;
using RefCounted<RTCRtpSFrameTransform>::ref;
using RefCounted<RTCRtpSFrameTransform>::deref;
private:
RTCRtpSFrameTransform(ScriptExecutionContext&, Options);
// ActiveDOMObject
const char* activeDOMObjectName() const final { return "RTCRtpSFrameTransform"; }
bool virtualHasPendingActivity() const final;
// EventTarget
EventTargetInterface eventTargetInterface() const final { return RTCRtpSFrameTransformEventTargetInterfaceType; }
ScriptExecutionContext* scriptExecutionContext() const final { return ContextDestructionObserver::scriptExecutionContext(); }
void refEventTarget() final { ref(); }
void derefEventTarget() final { deref(); }
enum class Side { Sender, Receiver };
void initializeTransformer(RTCRtpTransformBackend&, Side);
ExceptionOr<void> createStreams();
bool m_isAttached { false };
bool m_hasWritable { false };
Ref<RTCRtpSFrameTransformer> m_transformer;
RefPtr<ReadableStream> m_readable;
RefPtr<WritableStream> m_writable;
RefPtr<SimpleReadableStreamSource> m_readableStreamSource;
};
} // namespace WebCore
#endif // ENABLE(WEB_RTC)
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