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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.
*
* 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 "ExceptionOr.h"
#include "MediaStreamRequest.h"
#include "RealtimeMediaSource.h"
#include <wtf/AbstractRefCountedAndCanMakeWeakPtr.h>
#include <wtf/Function.h>
#include <wtf/RefPtr.h>
#include <wtf/RunLoop.h>
#include <wtf/text/WTFString.h>
#if PLATFORM(COCOA)
#include <pal/spi/cocoa/TCCSPI.h>
#include <wtf/OSObjectPtr.h>
#endif
namespace WebCore {
class CaptureDevice;
class CaptureDeviceManager;
class RealtimeMediaSourceSettings;
class TrackSourceInfo;
struct MediaConstraints;
class WEBCORE_EXPORT RealtimeMediaSourceCenterObserver : public AbstractRefCountedAndCanMakeWeakPtr<RealtimeMediaSourceCenterObserver> {
public:
virtual ~RealtimeMediaSourceCenterObserver();
virtual void devicesChanged() = 0;
virtual void deviceWillBeRemoved(const String& persistentId) = 0;
};
class WEBCORE_EXPORT RealtimeMediaSourceCenter : public ThreadSafeRefCounted<RealtimeMediaSourceCenter, WTF::DestructionThread::MainRunLoop> {
public:
~RealtimeMediaSourceCenter();
WEBCORE_EXPORT static RealtimeMediaSourceCenter& singleton();
using ValidConstraintsHandler = Function<void(Vector<CaptureDevice>&& audioDeviceUIDs, Vector<CaptureDevice>&& videoDeviceUIDs)>;
using InvalidConstraintsHandler = Function<void(MediaConstraintType)>;
WEBCORE_EXPORT void validateRequestConstraints(ValidConstraintsHandler&&, InvalidConstraintsHandler&&, const MediaStreamRequest&, MediaDeviceHashSalts&&);
using NewMediaStreamHandler = Function<void(Expected<Ref<MediaStreamPrivate>, CaptureSourceError>&&)>;
void createMediaStream(Ref<const Logger>&&, NewMediaStreamHandler&&, MediaDeviceHashSalts&&, CaptureDevice&& audioDevice, CaptureDevice&& videoDevice, const MediaStreamRequest&);
WEBCORE_EXPORT void getMediaStreamDevices(CompletionHandler<void(Vector<CaptureDevice>&&)>&&);
WEBCORE_EXPORT std::optional<RealtimeMediaSourceCapabilities> getCapabilities(const CaptureDevice&);
WEBCORE_EXPORT AudioCaptureFactory& audioCaptureFactory();
WEBCORE_EXPORT void setAudioCaptureFactory(AudioCaptureFactory&);
WEBCORE_EXPORT void unsetAudioCaptureFactory(AudioCaptureFactory&);
WEBCORE_EXPORT VideoCaptureFactory& videoCaptureFactory();
WEBCORE_EXPORT void setVideoCaptureFactory(VideoCaptureFactory&);
WEBCORE_EXPORT void unsetVideoCaptureFactory(VideoCaptureFactory&);
WEBCORE_EXPORT DisplayCaptureFactory& displayCaptureFactory();
WEBCORE_EXPORT void setDisplayCaptureFactory(DisplayCaptureFactory&);
WEBCORE_EXPORT void unsetDisplayCaptureFactory(DisplayCaptureFactory&);
WEBCORE_EXPORT static String hashStringWithSalt(const String& id, const String& hashSalt);
WEBCORE_EXPORT void addDevicesChangedObserver(RealtimeMediaSourceCenterObserver&);
WEBCORE_EXPORT void removeDevicesChangedObserver(RealtimeMediaSourceCenterObserver&);
void captureDevicesChanged();
void captureDeviceWillBeRemoved(const String& persistentId);
WEBCORE_EXPORT static bool shouldInterruptAudioOnPageVisibilityChange();
#if ENABLE(APP_PRIVACY_REPORT)
void setIdentity(OSObjectPtr<tcc_identity_t>&& identity) { m_identity = WTFMove(identity); }
OSObjectPtr<tcc_identity_t> identity() const { return m_identity; }
bool hasIdentity() const { return !!m_identity; }
#endif
#if ENABLE(EXTENSION_CAPABILITIES)
const String& currentMediaEnvironment() const;
void setCurrentMediaEnvironment(String&&);
#endif
private:
RealtimeMediaSourceCenter();
friend class NeverDestroyed<RealtimeMediaSourceCenter>;
AudioCaptureFactory& defaultAudioCaptureFactory();
VideoCaptureFactory& defaultVideoCaptureFactory();
DisplayCaptureFactory& defaultDisplayCaptureFactory();
struct DeviceInfo {
double fitnessScore;
CaptureDevice device;
};
void getDisplayMediaDevices(const MediaStreamRequest&, MediaDeviceHashSalts&&, Vector<DeviceInfo>&, MediaConstraintType&);
void getUserMediaDevices(const MediaStreamRequest&, MediaDeviceHashSalts&&, Vector<DeviceInfo>& audioDevices, Vector<DeviceInfo>& videoDevices, MediaConstraintType&);
void validateRequestConstraintsAfterEnumeration(ValidConstraintsHandler&&, InvalidConstraintsHandler&&, const MediaStreamRequest&, MediaDeviceHashSalts&&);
void enumerateDevices(bool shouldEnumerateCamera, bool shouldEnumerateDisplay, bool shouldEnumerateMicrophone, bool shouldEnumerateSpeakers, CompletionHandler<void()>&&);
RunLoop::Timer m_debounceTimer;
void triggerDevicesChangedObservers();
WeakHashSet<RealtimeMediaSourceCenterObserver> m_observers;
AudioCaptureFactory* m_audioCaptureFactoryOverride { nullptr };
VideoCaptureFactory* m_videoCaptureFactoryOverride { nullptr };
DisplayCaptureFactory* m_displayCaptureFactoryOverride { nullptr };
bool m_shouldInterruptAudioOnPageVisibilityChange { false };
#if ENABLE(APP_PRIVACY_REPORT)
OSObjectPtr<tcc_identity_t> m_identity;
#endif
#if ENABLE(EXTENSION_CAPABILITIES)
String m_currentMediaEnvironment;
#endif
bool m_useMockCaptureDevices { false };
};
} // namespace WebCore
#endif // ENABLE(MEDIA_STREAM)
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