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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 "RTCRtpScriptTransformer.h"
#include <JavaScriptCore/JSCJSValue.h>
#include <JavaScriptCore/JSObject.h>
#include <JavaScriptCore/Strong.h>
#include <wtf/Lock.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/ThreadSafeRefCounted.h>
namespace WebCore {
class RTCRtpScriptTransformer;
class RTCRtpTransformBackend;
class Worker;
class RTCRtpScriptTransform final
: public ThreadSafeRefCounted<RTCRtpScriptTransform, WTF::DestructionThread::Main>
, public ActiveDOMObject {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED(RTCRtpScriptTransform);
public:
static ExceptionOr<Ref<RTCRtpScriptTransform>> create(JSC::JSGlobalObject&, Worker&, JSC::JSValue, Vector<JSC::Strong<JSC::JSObject>>&&);
~RTCRtpScriptTransform();
// ActiveDOMObject.
void ref() const final { ThreadSafeRefCounted::ref(); }
void deref() const final { ThreadSafeRefCounted::deref(); }
void setTransformer(RTCRtpScriptTransformer&);
bool isAttached() const { return m_isAttached; }
void initializeBackendForReceiver(RTCRtpTransformBackend&);
void initializeBackendForSender(RTCRtpTransformBackend&);
void willClearBackend(RTCRtpTransformBackend&);
void backendTransferedToNewTransform() { clear(RTCRtpScriptTransformer::ClearCallback::No); }
private:
RTCRtpScriptTransform(ScriptExecutionContext&, Ref<Worker>&&);
void initializeTransformer(RTCRtpTransformBackend&);
bool setupTransformer(Ref<RTCRtpTransformBackend>&&);
void clear(RTCRtpScriptTransformer::ClearCallback);
Ref<Worker> m_worker;
bool m_isAttached { false };
RefPtr<RTCRtpTransformBackend> m_backend;
Lock m_transformerLock;
bool m_isTransformerInitialized WTF_GUARDED_BY_LOCK(m_transformerLock) { false };
WeakPtr<RTCRtpScriptTransformer> m_transformer WTF_GUARDED_BY_LOCK(m_transformerLock);
};
} // namespace WebCore
#endif // ENABLE(WEB_RTC)
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