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/*
* Copyright (C) 2013 Nokia Corporation and/or its subsidiary(-ies).
* Copyright (C) 2015 Ericsson AB. All rights reserved.
* Copyright (C) 2013-2022 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER 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(MEDIA_STREAM)
#include "RealtimeMediaSource.h"
#include <wtf/LoggerHelper.h>
#include <wtf/RefCounted.h>
#include <wtf/WeakHashSet.h>
namespace WebCore {
class GraphicsContext;
class MediaSample;
class RealtimeMediaSourceCapabilities;
class WebAudioSourceProvider;
class MediaStreamTrackPrivate final
: public RefCounted<MediaStreamTrackPrivate>
, public RealtimeMediaSource::Observer
#if !RELEASE_LOG_DISABLED
, public LoggerHelper
#endif
{
public:
class Observer : public CanMakeWeakPtr<Observer> {
public:
virtual ~Observer() = default;
virtual void trackStarted(MediaStreamTrackPrivate&) { };
virtual void trackEnded(MediaStreamTrackPrivate&) = 0;
virtual void trackMutedChanged(MediaStreamTrackPrivate&) = 0;
virtual void trackSettingsChanged(MediaStreamTrackPrivate&) = 0;
virtual void trackConfigurationChanged(MediaStreamTrackPrivate&) { };
virtual void trackEnabledChanged(MediaStreamTrackPrivate&) = 0;
virtual void readyStateChanged(MediaStreamTrackPrivate&) { };
};
static Ref<MediaStreamTrackPrivate> create(Ref<const Logger>&&, Ref<RealtimeMediaSource>&&);
static Ref<MediaStreamTrackPrivate> create(Ref<const Logger>&&, Ref<RealtimeMediaSource>&&, String&& id);
WEBCORE_EXPORT virtual ~MediaStreamTrackPrivate();
const String& id() const { return m_id; }
const String& label() const;
bool isActive() const { return enabled() && !ended() && !muted(); }
bool ended() const { return m_isEnded; }
enum class HintValue { Empty, Speech, Music, Motion, Detail, Text };
HintValue contentHint() const { return m_contentHint; }
void setContentHint(HintValue);
void startProducingData() { m_source->start(); }
void stopProducingData() { m_source->stop(); }
bool isProducingData() { return m_source->isProducingData(); }
bool muted() const;
void setMuted(bool muted) { m_source->setMuted(muted); }
void setIsInBackground(bool value) { m_source->setIsInBackground(value); }
bool isCaptureTrack() const;
bool enabled() const { return m_isEnabled; }
void setEnabled(bool);
Ref<MediaStreamTrackPrivate> clone();
RealtimeMediaSource& source() { return m_source.get(); }
const RealtimeMediaSource& source() const { return m_source.get(); }
RealtimeMediaSource::Type type() const { return m_source->type(); }
CaptureDevice::DeviceType deviceType() const { return m_source->deviceType(); }
bool isVideo() const { return m_source->isVideo(); }
bool isAudio() const { return m_source->isAudio(); }
void endTrack();
void addObserver(Observer&);
void removeObserver(Observer&);
bool hasObserver(Observer& observer) const { return m_observers.contains(observer); }
WEBCORE_EXPORT const RealtimeMediaSourceSettings& settings() const;
const RealtimeMediaSourceCapabilities& capabilities() const;
void applyConstraints(const MediaConstraints&, RealtimeMediaSource::ApplyConstraintsHandler&&);
RefPtr<WebAudioSourceProvider> createAudioSourceProvider();
void paintCurrentFrameInContext(GraphicsContext&, const FloatRect&);
enum class ReadyState { None, Live, Ended };
ReadyState readyState() const { return m_readyState; }
void setIdForTesting(String&& id) { m_id = WTFMove(id); }
#if !RELEASE_LOG_DISABLED
const Logger& logger() const final { return m_logger; }
const void* logIdentifier() const final { return m_logIdentifier; }
#endif
private:
MediaStreamTrackPrivate(Ref<const Logger>&&, Ref<RealtimeMediaSource>&&, String&& id);
// RealtimeMediaSource::Observer
void sourceStarted() final;
void sourceStopped() final;
void sourceMutedChanged() final;
void sourceSettingsChanged() final;
void sourceConfigurationChanged() final;
bool preventSourceFromStopping() final;
void audioUnitWillStart() final;
void hasStartedProducingData() final;
void updateReadyState();
void forEachObserver(const Function<void(Observer&)>&);
#if !RELEASE_LOG_DISABLED
const char* logClassName() const final { return "MediaStreamTrackPrivate"; }
WTFLogChannel& logChannel() const final;
#endif
WeakHashSet<Observer> m_observers;
Ref<RealtimeMediaSource> m_source;
String m_id;
ReadyState m_readyState { ReadyState::None };
bool m_isEnabled { true };
bool m_isEnded { false };
bool m_hasStartedProducingData { false };
HintValue m_contentHint { HintValue::Empty };
Ref<const Logger> m_logger;
#if !RELEASE_LOG_DISABLED
const void* m_logIdentifier;
#endif
};
typedef Vector<Ref<MediaStreamTrackPrivate>> MediaStreamTrackPrivateVector;
} // namespace WebCore
#endif // ENABLE(MEDIA_STREAM)
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