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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
* Copyright (C) 2011, 2015 Ericsson AB. All rights reserved.
* Copyright (C) 2013-2022 Apple Inc. All rights reserved.
* Copyright (C) 2013 Nokia Corporation and/or its subsidiary(-ies).
*
* 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)
#include "ActiveDOMObject.h"
#include "DoubleRange.h"
#include "EventTarget.h"
#include "LongRange.h"
#include "MediaProducer.h"
#include "MediaStreamTrackPrivate.h"
#include "MediaTrackCapabilities.h"
#include "MediaTrackConstraints.h"
#include "PlatformMediaSession.h"
#include <wtf/LoggerHelper.h>
namespace WebCore {
class AudioSourceProvider;
class Document;
struct MediaTrackConstraints;
template<typename IDLType> class DOMPromiseDeferred;
class MediaStreamTrack
: public RefCounted<MediaStreamTrack>
, public ActiveDOMObject
, public EventTarget
, private MediaStreamTrackPrivate::Observer
, private PlatformMediaSession::AudioCaptureSource
#if !RELEASE_LOG_DISABLED
, private LoggerHelper
#endif
{
WTF_MAKE_ISO_ALLOCATED(MediaStreamTrack);
public:
class Observer {
public:
virtual ~Observer() = default;
virtual void trackDidEnd() = 0;
};
static Ref<MediaStreamTrack> create(ScriptExecutionContext&, Ref<MediaStreamTrackPrivate>&&);
virtual ~MediaStreamTrack();
static void endCapture(Document&, MediaProducerMediaCaptureKind);
static MediaProducerMediaStateFlags captureState(Document&);
static void updateCaptureAccordingToMutedState(Document&);
virtual bool isCanvas() const { return false; }
const AtomString& kind() const;
WEBCORE_EXPORT const String& id() const;
const String& label() const;
const AtomString& contentHint() const;
void setContentHint(const String&);
bool enabled() const;
void setEnabled(bool);
bool muted() const;
bool mutedForBindings() const;
enum class State { Live, Ended };
State readyState() const { return m_readyState; }
bool ended() const;
virtual RefPtr<MediaStreamTrack> clone();
enum class StopMode { Silently, PostEvent };
void stopTrack(StopMode = StopMode::Silently);
bool isCaptureTrack() const { return m_isCaptureTrack; }
bool isVideo() const { return m_private->isVideo(); }
bool isAudio() const { return m_private->isAudio(); }
struct TrackSettings {
std::optional<int> width;
std::optional<int> height;
std::optional<double> aspectRatio;
std::optional<double> frameRate;
String facingMode;
std::optional<double> volume;
std::optional<int> sampleRate;
std::optional<int> sampleSize;
std::optional<bool> echoCancellation;
String displaySurface;
String deviceId;
String groupId;
std::optional<double> zoom;
};
TrackSettings getSettings() const;
using TrackCapabilities = MediaTrackCapabilities;
TrackCapabilities getCapabilities() const;
const MediaTrackConstraints& getConstraints() const { return m_constraints; }
void setConstraints(MediaTrackConstraints&& constraints) { m_constraints = WTFMove(constraints); }
void applyConstraints(const std::optional<MediaTrackConstraints>&, DOMPromiseDeferred<void>&&);
RealtimeMediaSource& source() const { return m_private->source(); }
MediaStreamTrackPrivate& privateTrack() { return m_private.get(); }
const MediaStreamTrackPrivate& privateTrack() const { return m_private.get(); }
RefPtr<WebAudioSourceProvider> createAudioSourceProvider();
MediaProducerMediaStateFlags mediaState() const;
void addObserver(Observer&);
void removeObserver(Observer&);
using RefCounted::ref;
using RefCounted::deref;
void setIdForTesting(String&& id) { m_private->setIdForTesting(WTFMove(id)); }
#if !RELEASE_LOG_DISABLED
const Logger& logger() const final { return m_private->logger(); }
const void* logIdentifier() const final { return m_private->logIdentifier(); }
#endif
void setShouldFireMuteEventImmediately(bool value) { m_shouldFireMuteEventImmediately = value; }
protected:
MediaStreamTrack(ScriptExecutionContext&, Ref<MediaStreamTrackPrivate>&&);
ScriptExecutionContext* scriptExecutionContext() const final { return ActiveDOMObject::scriptExecutionContext(); }
Ref<MediaStreamTrackPrivate> m_private;
private:
explicit MediaStreamTrack(MediaStreamTrack&);
void configureTrackRendering();
void updateToPageMutedState();
// ActiveDOMObject API.
void stop() final { stopTrack(); }
const char* activeDOMObjectName() const override;
void suspend(ReasonForSuspension) final;
bool virtualHasPendingActivity() const final;
// EventTarget
void refEventTarget() final { ref(); }
void derefEventTarget() final { deref(); }
EventTargetInterface eventTargetInterface() const final { return MediaStreamTrackEventTargetInterfaceType; }
// MediaStreamTrackPrivate::Observer
void trackStarted(MediaStreamTrackPrivate&) final;
void trackEnded(MediaStreamTrackPrivate&) final;
void trackMutedChanged(MediaStreamTrackPrivate&) final;
void trackSettingsChanged(MediaStreamTrackPrivate&) final;
void trackEnabledChanged(MediaStreamTrackPrivate&) final;
void trackConfigurationChanged(MediaStreamTrackPrivate&) final;
// PlatformMediaSession::AudioCaptureSource
bool isCapturingAudio() const final;
void updateVideoCaptureAccordingMicrophoneInterruption(Document&, bool);
#if !RELEASE_LOG_DISABLED
const char* logClassName() const final { return "MediaStreamTrack"; }
WTFLogChannel& logChannel() const final;
#endif
Vector<Observer*> m_observers;
MediaTrackConstraints m_constraints;
String m_groupId;
State m_readyState { State::Live };
bool m_muted { false };
bool m_ended { false };
const bool m_isCaptureTrack { false };
bool m_isInterrupted { false };
bool m_shouldFireMuteEventImmediately { false };
};
typedef Vector<Ref<MediaStreamTrack>> MediaStreamTrackVector;
} // namespace WebCore
#endif // ENABLE(MEDIA_STREAM)
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