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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 "ExceptionOr.h"
#include "JSDOMPromiseDeferredForward.h"
#include "RTCRtpTransformBackend.h"
#include <JavaScriptCore/JSCJSValue.h>
#include <wtf/Deque.h>
#include <wtf/ObjectIdentifier.h>
#include <wtf/RefCounted.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class FrameRateMonitor;
class MessagePort;
class ReadableStream;
class ScriptExecutionContext;
class RTCRtpTransformBackend;
class SerializedScriptValue;
class SimpleReadableStreamSource;
class WritableStream;
struct MessageWithMessagePorts;
enum class RTCRtpScriptTransformerIdentifierType { };
using RTCRtpScriptTransformerIdentifier = AtomicObjectIdentifier<RTCRtpScriptTransformerIdentifierType>;
class RTCRtpScriptTransformer
: public RefCounted<RTCRtpScriptTransformer>
, public ActiveDOMObject
, public CanMakeWeakPtr<RTCRtpScriptTransformer> {
public:
void ref() const final { RefCounted::ref(); }
void deref() const final { RefCounted::deref(); }
static ExceptionOr<Ref<RTCRtpScriptTransformer>> create(ScriptExecutionContext&, MessageWithMessagePorts&&);
~RTCRtpScriptTransformer();
ReadableStream& readable();
ExceptionOr<Ref<WritableStream>> writable();
JSC::JSValue options(JSC::JSGlobalObject&);
void generateKeyFrame(Ref<DeferredPromise>&&);
void sendKeyFrameRequest(Ref<DeferredPromise>&&);
void startPendingActivity() { m_pendingActivity = makePendingActivity(*this); }
void start(Ref<RTCRtpTransformBackend>&&);
enum class ClearCallback : bool { No, Yes };
void clear(ClearCallback);
private:
RTCRtpScriptTransformer(ScriptExecutionContext&, Ref<SerializedScriptValue>&&, Vector<Ref<MessagePort>>&&, Ref<ReadableStream>&&, Ref<SimpleReadableStreamSource>&&);
// ActiveDOMObject.
void stop() final { stopPendingActivity(); }
void stopPendingActivity() { auto pendingActivity = WTFMove(m_pendingActivity); }
void enqueueFrame(ScriptExecutionContext&, Ref<RTCRtpTransformableFrame>&&);
Ref<SerializedScriptValue> m_options;
Vector<Ref<MessagePort>> m_ports;
Ref<SimpleReadableStreamSource> m_readableSource;
Ref<ReadableStream> m_readable;
RefPtr<WritableStream> m_writable;
RefPtr<RTCRtpTransformBackend> m_backend;
RefPtr<PendingActivity<RTCRtpScriptTransformer>> m_pendingActivity;
Deque<Ref<DeferredPromise>> m_pendingKeyFramePromises;
#if !RELEASE_LOG_DISABLED
bool m_enableAdditionalLogging { false };
RTCRtpScriptTransformerIdentifier m_identifier;
std::unique_ptr<FrameRateMonitor> m_readableFrameRateMonitor;
std::unique_ptr<FrameRateMonitor> m_writableFrameRateMonitor;
#endif
};
} // namespace WebCore
#endif // ENABLE(WEB_RTC)
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