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/*
* Copyright (C) 2024 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.
*/
#pragma once
#if ENABLE(MEDIA_STREAM) && ENABLE(WEB_CODECS)
#include "ExceptionOr.h"
#include "RealtimeMediaSource.h"
#include "WritableStreamSink.h"
#include <wtf/RefCounted.h>
namespace WebCore {
class MediaStreamTrack;
class ScriptExecutionContext;
class WritableStream;
class VideoTrackGenerator : public RefCounted<VideoTrackGenerator> {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED(VideoTrackGenerator);
public:
static ExceptionOr<Ref<VideoTrackGenerator>> create(ScriptExecutionContext&);
~VideoTrackGenerator();
void setMuted(ScriptExecutionContext&, bool);
bool muted(ScriptExecutionContext&) const { return m_muted; }
Ref<WritableStream> writable();
Ref<MediaStreamTrack> track();
private:
class Sink;
VideoTrackGenerator(Ref<Sink>&&, Ref<WritableStream>&&, Ref<MediaStreamTrack>&&);
class Source final : public RealtimeMediaSource, public ThreadSafeRefCountedAndCanMakeThreadSafeWeakPtr<Source, WTF::DestructionThread::MainRunLoop> {
public:
static Ref<Source> create(ScriptExecutionContextIdentifier identifier) { return adoptRef(*new Source(identifier)); }
WTF_ABSTRACT_THREAD_SAFE_REF_COUNTED_AND_CAN_MAKE_WEAK_PTR_IMPL;
void writeVideoFrame(VideoFrame&, VideoFrameTimeMetadata);
void setWritable(WritableStream&);
private:
explicit Source(ScriptExecutionContextIdentifier);
const RealtimeMediaSourceCapabilities& capabilities() final { return m_capabilities; }
const RealtimeMediaSourceSettings& settings() final { return m_settings; }
void endProducingData() final;
ScriptExecutionContextIdentifier m_contextIdentifier;
WeakPtr<WritableStream> m_writable;
RealtimeMediaSourceCapabilities m_capabilities;
RealtimeMediaSourceSettings m_settings;
IntSize m_videoFrameSize;
IntSize m_maxVideoFrameSize;
};
class Sink final : public WritableStreamSink {
public:
static Ref<Sink> create(Ref<Source>&& source) { return adoptRef(*new Sink(WTFMove(source))); }
void setMuted(bool muted) { m_muted = muted; }
private:
explicit Sink(Ref<Source>&&);
void write(ScriptExecutionContext&, JSC::JSValue, DOMPromiseDeferred<void>&&) final;
void close() final;
void error(String&&) final;
bool m_muted { false };
Ref<Source> m_source;
};
bool m_muted { false };
bool m_hasMutedChanged { false };
Ref<Sink> m_sink;
Ref<WritableStream> m_writable;
Ref<MediaStreamTrack> m_track;
};
} // namespace WebCore
#endif // ENABLE(MEDIA_STREAM) && ENABLE(WEB_CODECS)
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