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RealtimeMediaSource.h
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RealtimeMediaSource.h
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/*
* Copyright (C) 2011 Ericsson AB. All rights reserved.
* Copyright (C) 2012 Google Inc. 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.
* 3. Neither the name of Ericsson nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* 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 "CaptureDevice.h"
#include "Image.h"
#include "MediaConstraints.h"
#include "PlatformLayer.h"
#include "RealtimeMediaSourceCapabilities.h"
#include "RealtimeMediaSourceFactory.h"
#include "VideoFrame.h"
#include "VideoFrameTimeMetadata.h"
#include <wtf/CompletionHandler.h>
#include <wtf/Lock.h>
#include <wtf/LoggerHelper.h>
#include <wtf/ThreadSafeRefCounted.h>
#include <wtf/Vector.h>
#include <wtf/WeakHashSet.h>
#include <wtf/text/WTFString.h>
namespace WTF {
class MediaTime;
}
namespace WebCore {
class AudioStreamDescription;
class FloatRect;
class GraphicsContext;
class MediaStreamPrivate;
class OrientationNotifier;
class PlatformAudioData;
class RealtimeMediaSourceSettings;
struct CaptureSourceOrError;
class WEBCORE_EXPORT RealtimeMediaSource
: public ThreadSafeRefCounted<RealtimeMediaSource, WTF::DestructionThread::MainRunLoop>
, public CanMakeWeakPtr<RealtimeMediaSource>
#if !RELEASE_LOG_DISABLED
, public LoggerHelper
#endif
{
public:
class Observer : public CanMakeWeakPtr<Observer> {
public:
virtual ~Observer();
// Source state changes.
virtual void sourceStarted() { }
virtual void sourceStopped() { }
virtual void sourceMutedChanged() { }
virtual void sourceSettingsChanged() { }
virtual void audioUnitWillStart() { }
virtual void sourceConfigurationChanged() { }
// Observer state queries.
virtual bool preventSourceFromStopping() { return false; }
virtual void hasStartedProducingData() { }
};
class AudioSampleObserver {
public:
virtual ~AudioSampleObserver() = default;
// May be called on a background thread.
virtual void audioSamplesAvailable(const MediaTime&, const PlatformAudioData&, const AudioStreamDescription&, size_t /*numberOfFrames*/) = 0;
};
class VideoFrameObserver {
public:
virtual ~VideoFrameObserver() = default;
// May be called on a background thread.
virtual void videoFrameAvailable(VideoFrame&, VideoFrameTimeMetadata) = 0;
};
virtual ~RealtimeMediaSource() = default;
virtual Ref<RealtimeMediaSource> clone() { return *this; }
const AtomString& hashedId() const;
String deviceIDHashSalt() const;
const String& persistentID() const { return m_persistentID; }
enum class Type : bool { Audio, Video };
Type type() const { return m_type; }
bool isVideo() const { return m_type == Type::Video; }
bool isAudio() const { return m_type == Type::Audio; }
virtual void whenReady(CompletionHandler<void(String)>&&);
virtual bool isProducingData() const;
void start();
void stop();
void endImmediatly() { end(nullptr); }
virtual void requestToEnd(Observer& callingObserver);
bool isEnded() const { return m_isEnded; }
bool muted() const { return m_muted; }
virtual void setMuted(bool);
bool captureDidFail() const { return m_captureDidFailed; }
virtual bool interrupted() const { return false; }
const AtomString& name() const { return m_name; }
unsigned fitnessScore() const { return m_fitnessScore; }
WEBCORE_EXPORT void addObserver(Observer&);
WEBCORE_EXPORT void removeObserver(Observer&);
WEBCORE_EXPORT void addAudioSampleObserver(AudioSampleObserver&);
WEBCORE_EXPORT void removeAudioSampleObserver(AudioSampleObserver&);
WEBCORE_EXPORT void addVideoFrameObserver(VideoFrameObserver&);
WEBCORE_EXPORT void removeVideoFrameObserver(VideoFrameObserver&);
const IntSize size() const;
void setSize(const IntSize&);
IntSize intrinsicSize() const;
void setIntrinsicSize(const IntSize&, bool notifyObservers = true);
double frameRate() const { return m_frameRate; }
void setFrameRate(double);
double aspectRatio() const { return m_aspectRatio; }
void setAspectRatio(double);
RealtimeMediaSourceSettings::VideoFacingMode facingMode() const { return m_facingMode; }
void setFacingMode(RealtimeMediaSourceSettings::VideoFacingMode);
double volume() const { return m_volume; }
void setVolume(double);
int sampleRate() const { return m_sampleRate; }
void setSampleRate(int);
virtual std::optional<Vector<int>> discreteSampleRates() const;
int sampleSize() const { return m_sampleSize; }
void setSampleSize(int);
virtual std::optional<Vector<int>> discreteSampleSizes() const;
bool echoCancellation() const { return m_echoCancellation; }
void setEchoCancellation(bool);
virtual const RealtimeMediaSourceCapabilities& capabilities() = 0;
virtual const RealtimeMediaSourceSettings& settings() = 0;
struct ApplyConstraintsError {
String badConstraint;
String message;
};
using ApplyConstraintsHandler = CompletionHandler<void(std::optional<ApplyConstraintsError>&&)>;
virtual void applyConstraints(const MediaConstraints&, ApplyConstraintsHandler&&);
std::optional<ApplyConstraintsError> applyConstraints(const MediaConstraints&);
bool supportsConstraints(const MediaConstraints&, String&);
bool supportsConstraint(const MediaConstraint&);
virtual bool isIsolated() const { return false; }
virtual bool isMockSource() const { return false; }
virtual bool isCaptureSource() const { return false; }
virtual CaptureDevice::DeviceType deviceType() const { return CaptureDevice::DeviceType::Unknown; }
virtual bool isVideoSource() const;
virtual void monitorOrientation(OrientationNotifier&) { }
virtual void captureFailed();
virtual bool isSameAs(RealtimeMediaSource& source) const { return this == &source; }
virtual bool isIncomingAudioSource() const { return false; }
virtual bool isIncomingVideoSource() const { return false; }
#if !RELEASE_LOG_DISABLED
virtual void setLogger(const Logger&, const void*);
const Logger* loggerPtr() const { return m_logger.get(); }
const Logger& logger() const final { ASSERT(m_logger); return *m_logger.get(); }
const void* logIdentifier() const final { return m_logIdentifier; }
const char* logClassName() const override { return "RealtimeMediaSource"; }
WTFLogChannel& logChannel() const final;
#endif
// Testing only
virtual void delaySamples(Seconds) { };
virtual void setInterruptedForTesting(bool);
virtual bool setShouldApplyRotation(bool) { return false; }
PageIdentifier pageIdentifier() const { return m_pageIdentifier; }
protected:
RealtimeMediaSource(Type, AtomString&& name, String&& deviceID = { }, String&& hashSalt = { }, PageIdentifier = { });
void scheduleDeferredTask(Function<void()>&&);
virtual void beginConfiguration() { }
virtual void commitConfiguration() { }
bool selectSettings(const MediaConstraints&, FlattenedConstraint&, String&);
double fitnessDistance(const MediaConstraint&);
void applyConstraint(const MediaConstraint&);
void applyConstraints(const FlattenedConstraint&);
bool supportsSizeAndFrameRate(std::optional<IntConstraint> width, std::optional<IntConstraint> height, std::optional<DoubleConstraint>, String&, double& fitnessDistance);
virtual bool supportsSizeAndFrameRate(std::optional<int> width, std::optional<int> height, std::optional<double>);
virtual void setSizeAndFrameRate(std::optional<int> width, std::optional<int> height, std::optional<double>);
void notifyMutedObservers();
void notifyMutedChange(bool muted);
void notifySettingsDidChangeObservers(OptionSet<RealtimeMediaSourceSettings::Flag>);
void initializeVolume(double volume) { m_volume = volume; }
void initializeSampleRate(int sampleRate) { m_sampleRate = sampleRate; }
void initializeEchoCancellation(bool echoCancellation) { m_echoCancellation = echoCancellation; }
void videoFrameAvailable(VideoFrame&, VideoFrameTimeMetadata);
void audioSamplesAvailable(const MediaTime&, const PlatformAudioData&, const AudioStreamDescription&, size_t);
void forEachObserver(const Function<void(Observer&)>&);
void end(Observer* = nullptr);
void setType(Type);
void setName(const AtomString&);
void setPersistentId(const String&);
private:
virtual void startProducingData() { }
virtual void stopProducingData() { }
virtual void endProducingData() { stop(); }
virtual void settingsDidChange(OptionSet<RealtimeMediaSourceSettings::Flag>) { }
virtual void stopBeingObserved() { stop(); }
virtual void didEnd() { }
void updateHasStartedProducingData();
void initializePersistentId();
#if !RELEASE_LOG_DISABLED
RefPtr<const Logger> m_logger;
const void* m_logIdentifier;
MonotonicTime m_lastFrameLogTime;
unsigned m_frameCount { 0 };
#endif
PageIdentifier m_pageIdentifier;
String m_idHashSalt;
AtomString m_hashedID;
String m_persistentID;
Type m_type;
AtomString m_name;
WeakHashSet<Observer> m_observers;
mutable Lock m_audioSampleObserversLock;
HashSet<AudioSampleObserver*> m_audioSampleObservers WTF_GUARDED_BY_LOCK(m_audioSampleObserversLock);
mutable Lock m_VideoFrameObserversLock;
HashSet<VideoFrameObserver*> m_VideoFrameObservers WTF_GUARDED_BY_LOCK(m_VideoFrameObserversLock);
// Set on the main thread from constraints.
IntSize m_size;
// Set on sample generation thread.
IntSize m_intrinsicSize;
double m_frameRate { 30 };
double m_aspectRatio { 0 };
double m_volume { 1 };
double m_sampleRate { 0 };
double m_sampleSize { 0 };
double m_fitnessScore { 0 };
RealtimeMediaSourceSettings::VideoFacingMode m_facingMode { RealtimeMediaSourceSettings::User};
bool m_muted { false };
bool m_pendingSettingsDidChangeNotification { false };
bool m_echoCancellation { false };
bool m_isProducingData { false };
bool m_captureDidFailed { false };
bool m_isEnded { false };
bool m_hasStartedProducingData { false };
};
struct CaptureSourceOrError {
CaptureSourceOrError() = default;
CaptureSourceOrError(Ref<RealtimeMediaSource>&& source) : captureSource(WTFMove(source)) { }
CaptureSourceOrError(String&& message) : errorMessage(WTFMove(message)) { }
operator bool() const { return !!captureSource; }
Ref<RealtimeMediaSource> source() { return captureSource.releaseNonNull(); }
RefPtr<RealtimeMediaSource> captureSource;
String errorMessage;
};
String convertEnumerationToString(RealtimeMediaSource::Type);
inline void RealtimeMediaSource::setName(const AtomString& name)
{
m_name = name;
}
inline void RealtimeMediaSource::whenReady(CompletionHandler<void(String)>&& callback)
{
callback({ });
}
inline bool RealtimeMediaSource::isVideoSource() const
{
return false;
}
inline bool RealtimeMediaSource::isProducingData() const
{
return m_isProducingData;
}
} // namespace WebCore
namespace WTF {
template<typename Type>
struct LogArgument;
template <>
struct LogArgument<WebCore::RealtimeMediaSource::Type> {
static String toString(const WebCore::RealtimeMediaSource::Type type)
{
return convertEnumerationToString(type);
}
};
}; // namespace WTF
#endif // ENABLE(MEDIA_STREAM)