| /* |
| * Copyright (C) 2021 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_SESSION_COORDINATOR) |
| |
| #include "ActiveDOMObject.h" |
| #include "EventTarget.h" |
| #include "MediaSession.h" |
| #include "MediaSessionCoordinatorPrivate.h" |
| #include "MediaSessionCoordinatorState.h" |
| #include <wtf/Logger.h> |
| #include <wtf/UniqueRef.h> |
| |
| namespace WebCore { |
| |
| template<typename> class DOMPromiseDeferred; |
| |
| class MediaSessionCoordinator |
| : public RefCounted<MediaSessionCoordinator> |
| , public MediaSessionCoordinatorClient |
| , public MediaSession::Observer |
| , public ActiveDOMObject |
| , public EventTargetWithInlineData { |
| WTF_MAKE_FAST_ALLOCATED; |
| public: |
| WEBCORE_EXPORT static Ref<MediaSessionCoordinator> create(ScriptExecutionContext*); |
| WEBCORE_EXPORT ~MediaSessionCoordinator(); |
| WEBCORE_EXPORT void setMediaSessionCoordinatorPrivate(Ref<MediaSessionCoordinatorPrivate>&&); |
| |
| void join(DOMPromiseDeferred<void>&&); |
| ExceptionOr<void> leave(); |
| void close(); |
| |
| String identifier() const { return m_privateCoordinator ? m_privateCoordinator->identifier() : String(); } |
| MediaSessionCoordinatorState state() const { return m_state; } |
| |
| void seekTo(double, DOMPromiseDeferred<void>&&); |
| void play(DOMPromiseDeferred<void>&&); |
| void pause(DOMPromiseDeferred<void>&&); |
| void setTrack(const String&, DOMPromiseDeferred<void>&&); |
| |
| void setMediaSession(MediaSession*); |
| |
| using MediaSessionCoordinatorClient::weakPtrFactory; |
| using WeakValueType = MediaSessionCoordinatorClient::WeakValueType; |
| using RefCounted::ref; |
| using RefCounted::deref; |
| |
| struct PlaySessionCommand { |
| std::optional<double> atTime; |
| std::optional<MonotonicTime> hostTime; |
| }; |
| std::optional<PlaySessionCommand> takeCurrentPlaySessionCommand() { return WTFMove(m_currentPlaySessionCommand); } |
| |
| private: |
| MediaSessionCoordinator(ScriptExecutionContext*); |
| |
| // EventTarget |
| void refEventTarget() final { ref(); } |
| void derefEventTarget() final { deref(); } |
| EventTargetInterface eventTargetInterface() const final { return MediaSessionCoordinatorEventTargetInterfaceType; } |
| ScriptExecutionContext* scriptExecutionContext() const final { return ContextDestructionObserver::scriptExecutionContext(); } |
| void eventListenersDidChange() final; |
| |
| // ActiveDOMObject |
| const char* activeDOMObjectName() const final { return "MediaSessionCoordinator"; } |
| bool virtualHasPendingActivity() const final; |
| |
| // MediaSession::Observer |
| void metadataChanged(const RefPtr<MediaMetadata>&) final; |
| void positionStateChanged(const std::optional<MediaPositionState>&) final; |
| void playbackStateChanged(MediaSessionPlaybackState) final; |
| void readyStateChanged(MediaSessionReadyState) final; |
| |
| // MediaSessionCoordinatorClient |
| void seekSessionToTime(double, CompletionHandler<void(bool)>&&) final; |
| void playSession(std::optional<double> atTime, std::optional<MonotonicTime> hostTime, CompletionHandler<void(bool)>&&) final; |
| void pauseSession(CompletionHandler<void(bool)>&&) final; |
| void setSessionTrack(const String&, CompletionHandler<void(bool)>&&) final; |
| void coordinatorStateChanged(WebCore::MediaSessionCoordinatorState) final; |
| |
| bool currentPositionApproximatelyEqualTo(double) const; |
| |
| const Logger& logger() const { return m_logger; } |
| const void* logIdentifier() const { return m_logIdentifier; } |
| static WTFLogChannel& logChannel(); |
| static const char* logClassName() { return "MediaSessionCoordinator"; } |
| bool shouldFireEvents() const; |
| |
| WeakPtr<MediaSession> m_session; |
| RefPtr<MediaSessionCoordinatorPrivate> m_privateCoordinator; |
| const Ref<const Logger> m_logger; |
| const void* m_logIdentifier; |
| MediaSessionCoordinatorState m_state { MediaSessionCoordinatorState::Closed }; |
| bool m_hasCoordinatorsStateChangeEventListener { false }; |
| std::optional<PlaySessionCommand> m_currentPlaySessionCommand; |
| }; |
| |
| } |
| |
| #endif // ENABLE(MEDIA_SESSION_COORDINATOR) |