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HTMLMediaElement.cpp
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HTMLMediaElement.cpp
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/*
* Copyright (C) 2007-2023 Apple Inc. All rights reserved.
* Copyright (C) 2014-2015 Google 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. ``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
* 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.
*/
#include "config.h"
#include "HTMLMediaElement.h"
#if ENABLE(VIDEO)
#include "ApplicationCacheHost.h"
#include "ApplicationCacheResource.h"
#include "Attribute.h"
#include "AudioTrackConfiguration.h"
#include "AudioTrackList.h"
#include "AudioTrackPrivate.h"
#include "Blob.h"
#include "BlobURL.h"
#include "CSSPropertyNames.h"
#include "CSSValueKeywords.h"
#include "Chrome.h"
#include "ChromeClient.h"
#include "CodecUtilities.h"
#include "CommonAtomStrings.h"
#include "CommonVM.h"
#include "ContentRuleListResults.h"
#include "ContentSecurityPolicy.h"
#include "ContentType.h"
#include "CookieJar.h"
#include "DeprecatedGlobalSettings.h"
#include "DiagnosticLoggingClient.h"
#include "DiagnosticLoggingKeys.h"
#include "DiagnosticLoggingResultType.h"
#include "Document.h"
#include "DocumentInlines.h"
#include "DocumentLoader.h"
#include "ElementChildIteratorInlines.h"
#include "EventLoop.h"
#include "EventNames.h"
#include "FrameLoader.h"
#include "FullscreenManager.h"
#include "HTMLAudioElement.h"
#include "HTMLParserIdioms.h"
#include "HTMLSourceElement.h"
#include "HTMLTrackElement.h"
#include "HTMLVideoElement.h"
#include "ImageOverlay.h"
#include "InbandGenericTextTrack.h"
#include "InbandTextTrackPrivate.h"
#include "InbandWebVTTTextTrack.h"
#include "InspectorInstrumentation.h"
#include "JSDOMException.h"
#include "JSDOMPromiseDeferred.h"
#include "JSHTMLMediaElement.h"
#include "JSMediaControlsHost.h"
#include "LoadableTextTrack.h"
#include "LocalFrame.h"
#include "LocalFrameLoaderClient.h"
#include "LocalFrameView.h"
#include "Logging.h"
#include "MIMETypeRegistry.h"
#include "MediaController.h"
#include "MediaControlsHost.h"
#include "MediaDevices.h"
#include "MediaDocument.h"
#include "MediaError.h"
#include "MediaFragmentURIParser.h"
#include "MediaList.h"
#include "MediaPlayer.h"
#include "MediaQueryEvaluator.h"
#include "MediaResourceLoader.h"
#include "NavigatorMediaDevices.h"
#include "NetworkingContext.h"
#include "NodeName.h"
#include "OriginAccessPatterns.h"
#include "PODIntervalTree.h"
#include "PageGroup.h"
#include "PageInlines.h"
#include "PictureInPictureSupport.h"
#include "PlatformMediaSessionManager.h"
#include "PlatformTextTrack.h"
#include "ProgressTracker.h"
#include "PseudoClassChangeInvalidation.h"
#include "Quirks.h"
#include "RegistrableDomain.h"
#include "RenderBoxInlines.h"
#include "RenderTheme.h"
#include "RenderVideo.h"
#include "RenderView.h"
#include "ResourceLoadInfo.h"
#include "ScriptController.h"
#include "ScriptDisallowedScope.h"
#include "ScriptSourceCode.h"
#include "SecurityOriginData.h"
#include "SecurityPolicy.h"
#include "Settings.h"
#include "ShadowRoot.h"
#include "SleepDisabler.h"
#include "SpeechSynthesis.h"
#include "TextTrackCueList.h"
#include "TextTrackList.h"
#include "ThreadableBlobRegistry.h"
#include "TimeRanges.h"
#include "UserContentController.h"
#include "UserGestureIndicator.h"
#include "VideoPlaybackQuality.h"
#include "VideoTrack.h"
#include "VideoTrackConfiguration.h"
#include "VideoTrackList.h"
#include "VideoTrackPrivate.h"
#include "WebCoreJSClientData.h"
#include <JavaScriptCore/Uint8Array.h>
#include <limits>
#include <pal/SessionID.h>
#include <wtf/Algorithms.h>
#include <wtf/IsoMallocInlines.h>
#include <wtf/JSONValues.h>
#include <wtf/Language.h>
#include <wtf/MathExtras.h>
#include <wtf/MemoryPressureHandler.h>
#include <wtf/NativePromise.h>
#include <wtf/Ref.h>
#include <wtf/text/CString.h>
#if USE(AUDIO_SESSION)
#include "AudioSession.h"
#endif
#if ENABLE(WEB_AUDIO)
#include "AudioSourceProvider.h"
#include "MediaElementAudioSourceNode.h"
#endif
#if PLATFORM(IOS_FAMILY)
#include "RuntimeApplicationChecks.h"
#include "VideoPresentationInterfaceIOS.h"
#endif
#if ENABLE(WIRELESS_PLAYBACK_TARGET)
#include "RemotePlayback.h"
#include "WebKitPlaybackTargetAvailabilityEvent.h"
#endif
#if ENABLE(MEDIA_SOURCE)
#include "MediaSource.h"
#include "MediaSourceInterfaceMainThread.h"
#if ENABLE(MEDIA_SOURCE_IN_WORKERS)
#include "MediaSourceHandle.h"
#include "MediaSourceInterfaceWorker.h"
#endif
#include "LocalDOMWindow.h"
#include "SourceBufferList.h"
#endif
#if ENABLE(MEDIA_STREAM)
#include "MediaStream.h"
#endif
#if ENABLE(LEGACY_ENCRYPTED_MEDIA)
#include "WebKitMediaKeyNeededEvent.h"
#include "WebKitMediaKeys.h"
#endif
#if ENABLE(ENCRYPTED_MEDIA)
#include "MediaEncryptedEvent.h"
#include "MediaKeys.h"
#endif
#if ENABLE(ENCRYPTED_MEDIA)
#include "NotImplemented.h"
#endif
#if ENABLE(VIDEO_PRESENTATION_MODE)
#include "VideoPresentationModel.h"
#endif
#if ENABLE(MEDIA_SESSION)
#include "MediaSession.h"
#endif
#if ENABLE(MEDIA_SESSION_COORDINATOR)
#include "MediaSessionCoordinator.h"
#endif
namespace WTF {
template <>
struct LogArgument<URL> {
static String toString(const URL& url)
{
#if !LOG_DISABLED
static const unsigned maximumURLLengthForLogging = 512;
if (url.string().length() < maximumURLLengthForLogging)
return url.string();
return makeString(StringView(url.string()).left(maximumURLLengthForLogging), "...");
#else
UNUSED_PARAM(url);
return "[url]"_s;
#endif
}
};
}
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(HTMLMediaElement);
static const Seconds SeekRepeatDelay { 100_ms };
static const double SeekTime = 0.2;
static const Seconds ScanRepeatDelay { 1.5_s };
static const double ScanMaximumRate = 8;
static const double AutoplayInterferenceTimeThreshold = 10;
static const Seconds hideMediaControlsAfterEndedDelay { 6_s };
#if ENABLE(MEDIA_SOURCE)
// URL protocol used to signal that the media source API is being used.
static constexpr auto mediaSourceBlobProtocol = "blob"_s;
#endif
using namespace HTMLNames;
String convertEnumerationToString(HTMLMediaElement::ReadyState enumerationValue)
{
static const NeverDestroyed<String> values[] = {
MAKE_STATIC_STRING_IMPL("HAVE_NOTHING"),
MAKE_STATIC_STRING_IMPL("HAVE_METADATA"),
MAKE_STATIC_STRING_IMPL("HAVE_CURRENT_DATA"),
MAKE_STATIC_STRING_IMPL("HAVE_FUTURE_DATA"),
MAKE_STATIC_STRING_IMPL("HAVE_ENOUGH_DATA"),
};
static_assert(static_cast<size_t>(HTMLMediaElementEnums::HAVE_NOTHING) == 0, "HTMLMediaElementEnums::HAVE_NOTHING is not 0 as expected");
static_assert(static_cast<size_t>(HTMLMediaElementEnums::HAVE_METADATA) == 1, "HTMLMediaElementEnums::HAVE_METADATA is not 1 as expected");
static_assert(static_cast<size_t>(HTMLMediaElementEnums::HAVE_CURRENT_DATA) == 2, "HTMLMediaElementEnums::HAVE_CURRENT_DATA is not 2 as expected");
static_assert(static_cast<size_t>(HTMLMediaElementEnums::HAVE_FUTURE_DATA) == 3, "HTMLMediaElementEnums::HAVE_FUTURE_DATA is not 3 as expected");
static_assert(static_cast<size_t>(HTMLMediaElementEnums::HAVE_ENOUGH_DATA) == 4, "HTMLMediaElementEnums::HAVE_ENOUGH_DATA is not 4 as expected");
ASSERT(static_cast<size_t>(enumerationValue) < std::size(values));
return values[static_cast<size_t>(enumerationValue)];
}
String convertEnumerationToString(HTMLMediaElement::NetworkState enumerationValue)
{
static const NeverDestroyed<String> values[] = {
MAKE_STATIC_STRING_IMPL("NETWORK_EMPTY"),
MAKE_STATIC_STRING_IMPL("NETWORK_IDLE"),
MAKE_STATIC_STRING_IMPL("NETWORK_LOADING"),
MAKE_STATIC_STRING_IMPL("NETWORK_NO_SOURCE"),
};
static_assert(static_cast<size_t>(HTMLMediaElementEnums::NETWORK_EMPTY) == 0, "HTMLMediaElementEnums::NETWORK_EMPTY is not 0 as expected");
static_assert(static_cast<size_t>(HTMLMediaElementEnums::NETWORK_IDLE) == 1, "HTMLMediaElementEnums::NETWORK_IDLE is not 1 as expected");
static_assert(static_cast<size_t>(HTMLMediaElementEnums::NETWORK_LOADING) == 2, "HTMLMediaElementEnums::NETWORK_LOADING is not 2 as expected");
static_assert(static_cast<size_t>(HTMLMediaElementEnums::NETWORK_NO_SOURCE) == 3, "HTMLMediaElementEnums::NETWORK_NO_SOURCE is not 3 as expected");
ASSERT(static_cast<size_t>(enumerationValue) < std::size(values));
return values[static_cast<size_t>(enumerationValue)];
}
String convertEnumerationToString(HTMLMediaElement::AutoplayEventPlaybackState enumerationValue)
{
static const NeverDestroyed<String> values[] = {
MAKE_STATIC_STRING_IMPL("None"),
MAKE_STATIC_STRING_IMPL("PreventedAutoplay"),
MAKE_STATIC_STRING_IMPL("StartedWithUserGesture"),
MAKE_STATIC_STRING_IMPL("StartedWithoutUserGesture"),
};
static_assert(static_cast<size_t>(HTMLMediaElement::AutoplayEventPlaybackState::None) == 0, "AutoplayEventPlaybackState::None is not 0 as expected");
static_assert(static_cast<size_t>(HTMLMediaElement::AutoplayEventPlaybackState::PreventedAutoplay) == 1, "AutoplayEventPlaybackState::PreventedAutoplay is not 1 as expected");
static_assert(static_cast<size_t>(HTMLMediaElement::AutoplayEventPlaybackState::StartedWithUserGesture) == 2, "AutoplayEventPlaybackState::StartedWithUserGesture is not 2 as expected");
static_assert(static_cast<size_t>(HTMLMediaElement::AutoplayEventPlaybackState::StartedWithoutUserGesture) == 3, "AutoplayEventPlaybackState::StartedWithoutUserGesture is not 3 as expected");
ASSERT(static_cast<size_t>(enumerationValue) < std::size(values));
return values[static_cast<size_t>(enumerationValue)];
}
String convertEnumerationToString(HTMLMediaElement::TextTrackVisibilityCheckType enumerationValue)
{
static const NeverDestroyed<String> values[] = {
MAKE_STATIC_STRING_IMPL("CheckTextTrackVisibility"),
MAKE_STATIC_STRING_IMPL("AssumeTextTrackVisibilityChanged"),
};
static_assert(static_cast<size_t>(HTMLMediaElement::TextTrackVisibilityCheckType::CheckTextTrackVisibility) == 0, "TextTrackVisibilityCheckType::CheckTextTrackVisibility is not 0 as expected");
static_assert(static_cast<size_t>(HTMLMediaElement::TextTrackVisibilityCheckType::AssumeTextTrackVisibilityChanged) == 1, "TextTrackVisibilityCheckType::AssumeTextTrackVisibilityChanged is not 1 as expected");
ASSERT(static_cast<size_t>(enumerationValue) < std::size(values));
return values[static_cast<size_t>(enumerationValue)];
}
String convertEnumerationToString(HTMLMediaElement::SpeechSynthesisState enumerationValue)
{
static const NeverDestroyed<String> values[] = {
MAKE_STATIC_STRING_IMPL("None"),
MAKE_STATIC_STRING_IMPL("Speaking"),
MAKE_STATIC_STRING_IMPL("CompletingExtendedDescription"),
MAKE_STATIC_STRING_IMPL("Paused"),
};
static_assert(static_cast<size_t>(HTMLMediaElement::SpeechSynthesisState::None) == 0, "SpeechSynthesisState::None is not 0 as expected");
static_assert(static_cast<size_t>(HTMLMediaElement::SpeechSynthesisState::Speaking) == 1, "SpeechSynthesisState::Speaking is not 1 as expected");
static_assert(static_cast<size_t>(HTMLMediaElement::SpeechSynthesisState::CompletingExtendedDescription) == 2, "SpeechSynthesisState::CompletingExtendedDescription is not 2 as expected");
static_assert(static_cast<size_t>(HTMLMediaElement::SpeechSynthesisState::Paused) == 3, "SpeechSynthesisState::Paused is not 3 as expected");
ASSERT(static_cast<size_t>(enumerationValue) < std::size(values));
return values[static_cast<size_t>(enumerationValue)];
}
class TrackDisplayUpdateScope {
public:
TrackDisplayUpdateScope(HTMLMediaElement& element)
: m_element(element)
{
m_element->beginIgnoringTrackDisplayUpdateRequests();
}
~TrackDisplayUpdateScope()
{
m_element->endIgnoringTrackDisplayUpdateRequests();
}
private:
WeakRef<HTMLMediaElement> m_element;
};
struct HTMLMediaElement::TrackGroup {
enum GroupKind { CaptionsAndSubtitles, Description, Chapter, Metadata, Other };
TrackGroup(GroupKind kind)
: kind(kind)
{
}
Vector<RefPtr<TextTrack>> tracks;
RefPtr<TextTrack> visibleTrack;
RefPtr<TextTrack> defaultTrack;
GroupKind kind;
bool hasSrcLang { false };
};
HashSet<WeakRef<HTMLMediaElement>>& HTMLMediaElement::allMediaElements()
{
static NeverDestroyed<HashSet<WeakRef<HTMLMediaElement>>> elements;
return elements;
}
struct MediaElementSessionInfo {
WeakPtr<const MediaElementSession> session;
MediaElementSession::PlaybackControlsPurpose purpose;
MonotonicTime timeOfLastUserInteraction;
bool canShowControlsManager : 1;
bool isVisibleInViewportOrFullscreen : 1;
bool isLargeEnoughForMainContent : 1;
bool isLongEnoughForMainContent : 1;
bool isPlayingAudio : 1;
bool hasEverNotifiedAboutPlaying : 1;
};
static MediaElementSessionInfo mediaElementSessionInfoForSession(const MediaElementSession& session, MediaElementSession::PlaybackControlsPurpose purpose)
{
Ref element = session.element();
return {
&session,
purpose,
session.mostRecentUserInteractionTime(),
session.canShowControlsManager(purpose),
element->isFullscreen() || element->isVisibleInViewport(),
session.isLargeEnoughForMainContent(MediaSessionMainContentPurpose::MediaControls),
session.isLongEnoughForMainContent(),
element->isPlaying() && element->hasAudio() && !element->muted(),
element->hasEverNotifiedAboutPlaying()
};
}
static bool preferMediaControlsForCandidateSessionOverOtherCandidateSession(const MediaElementSessionInfo& session, const MediaElementSessionInfo& otherSession)
{
MediaElementSession::PlaybackControlsPurpose purpose = session.purpose;
ASSERT(purpose == otherSession.purpose);
// For the controls manager and MediaSession, prioritize visible media over offscreen media.
if ((purpose == MediaElementSession::PlaybackControlsPurpose::ControlsManager || purpose == MediaElementSession::PlaybackControlsPurpose::MediaSession)
&& session.isVisibleInViewportOrFullscreen != otherSession.isVisibleInViewportOrFullscreen)
return session.isVisibleInViewportOrFullscreen;
// For Now Playing and MediaSession, prioritize elements that would normally satisfy main content.
if ((purpose == MediaElementSession::PlaybackControlsPurpose::NowPlaying || purpose == MediaElementSession::PlaybackControlsPurpose::MediaSession)
&& session.isLargeEnoughForMainContent != otherSession.isLargeEnoughForMainContent)
return session.isLargeEnoughForMainContent;
// For MediaSession, prioritize elements that have been played before.
if (purpose == MediaElementSession::PlaybackControlsPurpose::MediaSession
&& session.hasEverNotifiedAboutPlaying != otherSession.hasEverNotifiedAboutPlaying)
return session.hasEverNotifiedAboutPlaying;
// As a tiebreaker, prioritize elements that the user recently interacted with.
return session.timeOfLastUserInteraction > otherSession.timeOfLastUserInteraction;
}
static bool mediaSessionMayBeConfusedWithMainContent(const MediaElementSessionInfo& session, MediaElementSession::PlaybackControlsPurpose purpose)
{
if (purpose == MediaElementSession::PlaybackControlsPurpose::MediaSession)
return false;
if (purpose == MediaElementSession::PlaybackControlsPurpose::NowPlaying)
return session.isPlayingAudio;
if (!session.isVisibleInViewportOrFullscreen)
return false;
if (!session.isLargeEnoughForMainContent)
return false;
// Even if this video is not a candidate, if it is visible to the user and large enough
// to be main content, it poses a risk for being confused with main content.
return true;
}
static bool defaultVolumeLocked()
{
#if PLATFORM(IOS) || PLATFORM(VISION)
return true;
#else
return false;
#endif
}
static bool isInWindowOrStandardFullscreen(HTMLMediaElementEnums::VideoFullscreenMode mode)
{
return mode == HTMLMediaElementEnums::VideoFullscreenModeStandard || mode == HTMLMediaElementEnums::VideoFullscreenModeInWindow;
}
HTMLMediaElement::HTMLMediaElement(const QualifiedName& tagName, Document& document, bool createdByParser)
: HTMLElement(tagName, document, { TypeFlag::HasCustomStyleResolveCallbacks, TypeFlag::HasDidMoveToNewDocument })
, ActiveDOMObject(document)
, m_progressEventTimer(*this, &HTMLMediaElement::progressEventTimerFired)
, m_playbackProgressTimer(*this, &HTMLMediaElement::playbackProgressTimerFired)
, m_scanTimer(*this, &HTMLMediaElement::scanTimerFired)
, m_playbackControlsManagerBehaviorRestrictionsTimer(*this, &HTMLMediaElement::playbackControlsManagerBehaviorRestrictionsTimerFired)
, m_seekToPlaybackPositionEndedTimer(*this, &HTMLMediaElement::seekToPlaybackPositionEndedTimerFired)
, m_checkPlaybackTargetCompatibilityTimer(*this, &HTMLMediaElement::checkPlaybackTargetCompatibility)
, m_currentIdentifier(MediaUniqueIdentifier::generate())
, m_lastTimeUpdateEventMovieTime(MediaTime::positiveInfiniteTime())
, m_firstTimePlaying(true)
, m_playing(false)
, m_isWaitingUntilMediaCanStart(false)
, m_shouldDelayLoadEvent(false)
, m_haveFiredLoadedData(false)
, m_inActiveDocument(true)
, m_autoplaying(true)
, m_muted(false)
, m_explicitlyMuted(false)
, m_initiallyMuted(false)
, m_paused(true)
, m_seeking(false)
, m_seekRequested(false)
, m_wasPlayingBeforeSeeking(false)
, m_sentStalledEvent(false)
, m_sentEndEvent(false)
, m_pausedInternal(false)
, m_closedCaptionsVisible(false)
, m_completelyLoaded(false)
, m_havePreparedToPlay(false)
, m_parsingInProgress(createdByParser)
, m_elementIsHidden(document.hidden())
, m_receivedLayoutSizeChanged(false)
, m_hasEverNotifiedAboutPlaying(false)
, m_hasEverHadAudio(false)
, m_hasEverHadVideo(false)
, m_mediaControlsDependOnPageScaleFactor(false)
, m_haveSetUpCaptionContainer(false)
, m_isScrubbingRemotely(false)
, m_waitingToEnterFullscreen(false)
, m_changingVideoFullscreenMode(false)
, m_showPoster(true)
, m_tracksAreReady(true)
, m_haveVisibleTextTrack(false)
, m_processingPreferenceChange(false)
, m_shouldAudioPlaybackRequireUserGesture(document.topDocument().requiresUserGestureForAudioPlayback() && !processingUserGestureForMedia())
, m_shouldVideoPlaybackRequireUserGesture(document.topDocument().requiresUserGestureForVideoPlayback() && !processingUserGestureForMedia())
, m_volumeLocked(defaultVolumeLocked())
, m_opaqueRootProvider([this] { return opaqueRoot(); })
#if USE(AUDIO_SESSION)
, m_categoryAtMostRecentPlayback(AudioSessionCategory::None)
, m_modeAtMostRecentPlayback(AudioSessionMode::Default)
#endif
#if !RELEASE_LOG_DISABLED
, m_logger(&document.logger())
, m_logIdentifier(uniqueLogIdentifier())
#endif
#if ENABLE(WIRELESS_PLAYBACK_TARGET)
, m_remote(RemotePlayback::create(*this))
#endif
{
allMediaElements().add(*this);
ALWAYS_LOG(LOGIDENTIFIER);
InspectorInstrumentation::addEventListenersToNode(*this);
}
void HTMLMediaElement::initializeMediaSession()
{
ASSERT(!m_mediaSession);
m_mediaSession = makeUnique<MediaElementSession>(*this);
m_mediaSession->addBehaviorRestriction(MediaElementSession::RequireUserGestureForFullscreen);
m_mediaSession->addBehaviorRestriction(MediaElementSession::RequirePageConsentToLoadMedia);
#if ENABLE(WIRELESS_PLAYBACK_TARGET)
m_mediaSession->addBehaviorRestriction(MediaElementSession::RequireUserGestureToAutoplayToExternalDevice);
#endif
m_mediaSession->addBehaviorRestriction(MediaElementSession::RequireUserGestureToControlControlsManager);
m_mediaSession->addBehaviorRestriction(MediaElementSession::RequirePlaybackToControlControlsManager);
Ref document = this->document();
RefPtr page = document->page();
if (document->settings().invisibleAutoplayNotPermitted())
m_mediaSession->addBehaviorRestriction(MediaElementSession::InvisibleAutoplayNotPermitted);
if (document->settings().requiresPageVisibilityToPlayAudio())
m_mediaSession->addBehaviorRestriction(MediaElementSession::RequirePageVisibilityToPlayAudio);
if (document->ownerElement() || !document->isMediaDocument()) {
if (m_shouldVideoPlaybackRequireUserGesture) {
m_mediaSession->addBehaviorRestriction(MediaElementSession::RequireUserGestureForVideoRateChange);
if (document->settings().requiresUserGestureToLoadVideo())
m_mediaSession->addBehaviorRestriction(MediaElementSession::RequireUserGestureForLoad);
}
if (page && page->isLowPowerModeEnabled())
m_mediaSession->addBehaviorRestriction(MediaElementSession::RequireUserGestureForVideoDueToLowPowerMode);
if (m_shouldAudioPlaybackRequireUserGesture)
m_mediaSession->addBehaviorRestriction(MediaElementSession::RequireUserGestureForAudioRateChange);
#if ENABLE(WIRELESS_PLAYBACK_TARGET)
if (m_shouldVideoPlaybackRequireUserGesture || m_shouldAudioPlaybackRequireUserGesture)
m_mediaSession->addBehaviorRestriction(MediaElementSession::RequireUserGestureToShowPlaybackTargetPicker);
#endif
if (!document->mediaDataLoadsAutomatically() && !document->quirks().needsPreloadAutoQuirk())
m_mediaSession->addBehaviorRestriction(MediaElementSession::AutoPreloadingNotPermitted);
if (document->settings().mainContentUserGestureOverrideEnabled())
m_mediaSession->addBehaviorRestriction(MediaElementSession::OverrideUserGestureRequirementForMainContent);
}
#if PLATFORM(IOS_FAMILY)
if (!document->requiresUserGestureForVideoPlayback() && !document->requiresUserGestureForAudioPlayback()) {
// Relax RequireUserGestureForFullscreen when requiresUserGestureForVideoPlayback and requiresUserGestureForAudioPlayback is not set:
m_mediaSession->removeBehaviorRestriction(MediaElementSession::RequireUserGestureForFullscreen);
}
#endif
registerWithDocument(document);
#if USE(AUDIO_SESSION) && PLATFORM(MAC)
AudioSession::sharedSession().addConfigurationChangeObserver(*this);
#endif
m_mediaSession->clientWillBeginAutoplaying();
}
HTMLMediaElement::~HTMLMediaElement()
{
ALWAYS_LOG(LOGIDENTIFIER);
beginIgnoringTrackDisplayUpdateRequests();
if (RefPtr textTracks = m_textTracks) {
for (unsigned i = 0; i < textTracks->length(); ++i) {
RefPtr track = textTracks->item(i);
track->clearClient(*this);
}
}
if (RefPtr audioTracks = m_audioTracks) {
for (unsigned i = 0; i < audioTracks->length(); ++i) {
RefPtr track = audioTracks->item(i);
track->clearClient(*this);
}
}
if (RefPtr videoTracks = m_videoTracks) {
for (unsigned i = 0; i < videoTracks->length(); ++i) {
RefPtr track = videoTracks->item(i);
track->clearClient(*this);
}
}
allMediaElements().remove(*this);
setShouldDelayLoadEvent(false);
unregisterWithDocument(RefAllowingPartiallyDestroyed<Document> { document() });
#if USE(AUDIO_SESSION) && PLATFORM(MAC)
AudioSession::sharedSession().removeConfigurationChangeObserver(*this);
#endif
#if ENABLE(WIRELESS_PLAYBACK_TARGET)
if (hasEventListeners(eventNames().webkitplaybacktargetavailabilitychangedEvent) || m_remote->hasAvailabilityCallbacks()) {
m_hasPlaybackTargetAvailabilityListeners = false;
if (m_mediaSession)
m_mediaSession->setHasPlaybackTargetAvailabilityListeners(false);
updateMediaState();
}
#endif
if (RefPtr mediaController = m_mediaController) {
mediaController->removeMediaElement(*this);
m_mediaController = nullptr;
}
#if ENABLE(MEDIA_SOURCE)
detachMediaSource();
#endif
#if ENABLE(LEGACY_ENCRYPTED_MEDIA)
webkitSetMediaKeys(nullptr);
#endif
#if ENABLE(ENCRYPTED_MEDIA)
if (m_mediaKeys) {
m_mediaKeys->detachCDMClient(*this);
if (RefPtr player = m_player)
player->cdmInstanceDetached(m_mediaKeys->protectedCDMInstance());
}
#endif
if (m_isolatedWorld)
m_isolatedWorld->clearWrappers();
m_completelyLoaded = true;
if (RefPtr player = m_player) {
player->invalidate();
m_player = nullptr;
}
m_mediaSession = nullptr;
schedulePlaybackControlsManagerUpdate();
}
std::optional<MediaPlayerIdentifier> HTMLMediaElement::playerIdentifier() const
{
return m_player ? std::optional { m_player->identifier() } : std::nullopt;
}
RefPtr<HTMLMediaElement> HTMLMediaElement::bestMediaElementForRemoteControls(MediaElementSession::PlaybackControlsPurpose purpose, const Document* document)
{
auto selectedSession = PlatformMediaSessionManager::sharedManager().bestEligibleSessionForRemoteControls([&document] (auto& session) {
auto* mediaElementSession = dynamicDowncast<MediaElementSession>(session);
return mediaElementSession && (!document || &mediaElementSession->element().document() == document);
}, purpose);
return selectedSession ? RefPtr { &downcast<MediaElementSession>(selectedSession.get())->element() } : nullptr;
}
std::optional<NowPlayingInfo> HTMLMediaElement::nowPlayingInfo() const
{
return m_mediaSession->computeNowPlayingInfo();
}
WeakPtr<PlatformMediaSession> HTMLMediaElement::selectBestMediaSession(const Vector<WeakPtr<PlatformMediaSession>>& sessions, PlatformMediaSession::PlaybackControlsPurpose purpose)
{
if (!sessions.size())
return nullptr;
Vector<MediaElementSessionInfo> candidateSessions;
bool atLeastOneNonCandidateMayBeConfusedForMainContent = false;
for (auto& session : sessions) {
auto mediaElementSessionInfo = mediaElementSessionInfoForSession(*downcast<MediaElementSession>(session.get()), purpose);
if (mediaElementSessionInfo.canShowControlsManager)
candidateSessions.append(mediaElementSessionInfo);
else if (mediaSessionMayBeConfusedWithMainContent(mediaElementSessionInfo, purpose))
atLeastOneNonCandidateMayBeConfusedForMainContent = true;
}
if (!candidateSessions.size())
return nullptr;
std::sort(candidateSessions.begin(), candidateSessions.end(), preferMediaControlsForCandidateSessionOverOtherCandidateSession);
auto strongestSessionCandidate = candidateSessions.first();
if (!strongestSessionCandidate.isVisibleInViewportOrFullscreen && !strongestSessionCandidate.isPlayingAudio && atLeastOneNonCandidateMayBeConfusedForMainContent)
return nullptr;
return strongestSessionCandidate.session.get();
}
void HTMLMediaElement::registerWithDocument(Document& document)
{
document.registerMediaElement(*this);
mediaSession().registerWithDocument(document);
if (m_isWaitingUntilMediaCanStart)
document.addMediaCanStartListener(*this);
document.registerForVisibilityStateChangedCallbacks(*this);
if (m_requireCaptionPreferencesChangedCallbacks)
document.registerForCaptionPreferencesChangedCallbacks(*this);
#if ENABLE(WIRELESS_PLAYBACK_TARGET)
document.registerForDocumentSuspensionCallbacks(*this);
#endif
document.addAudioProducer(*this);
}
void HTMLMediaElement::unregisterWithDocument(Document& document)
{
document.unregisterMediaElement(*this);
#if ENABLE(SPEECH_SYNTHESIS)
if (RefPtr speechSynthesis = m_speechSynthesis) {
speechSynthesis->cancel();
m_speechSynthesis = nullptr;
}
#endif
if (m_mediaSession)
m_mediaSession->unregisterWithDocument(document);
if (m_isWaitingUntilMediaCanStart)
document.removeMediaCanStartListener(*this);
document.unregisterForVisibilityStateChangedCallbacks(*this);
if (m_requireCaptionPreferencesChangedCallbacks)
document.unregisterForCaptionPreferencesChangedCallbacks(*this);
#if ENABLE(WIRELESS_PLAYBACK_TARGET)
document.unregisterForDocumentSuspensionCallbacks(*this);
#endif
document.removeAudioProducer(*this);
}
void HTMLMediaElement::didMoveToNewDocument(Document& oldDocument, Document& newDocument)
{
ALWAYS_LOG(LOGIDENTIFIER);
ASSERT_WITH_SECURITY_IMPLICATION(&document() == &newDocument);
if (m_shouldDelayLoadEvent) {
oldDocument.decrementLoadEventDelayCount();
newDocument.incrementLoadEventDelayCount();
}
unregisterWithDocument(oldDocument);
registerWithDocument(newDocument);
HTMLElement::didMoveToNewDocument(oldDocument, newDocument);
updateShouldAutoplay();
visibilityStateChanged();
}
#if ENABLE(WIRELESS_PLAYBACK_TARGET)
void HTMLMediaElement::prepareForDocumentSuspension()
{
mediaSession().unregisterWithDocument(protectedDocument());
}
void HTMLMediaElement::resumeFromDocumentSuspension()
{
mediaSession().registerWithDocument(protectedDocument());
updateShouldAutoplay();
}
#endif
bool HTMLMediaElement::supportsFocus() const
{
if (document().isMediaDocument())
return false;
// If no controls specified, we should still be able to focus the element if it has tabIndex.
return controls() || HTMLElement::supportsFocus();
}
bool HTMLMediaElement::isMouseFocusable() const
{
return false;
}
bool HTMLMediaElement::isInteractiveContent() const
{
return controls();
}
void HTMLMediaElement::removeAllEventListeners()
{
Element::removeAllEventListeners();
if (RefPtr audioTracks = m_audioTracks)
audioTracks->removeAllEventListeners();
if (RefPtr textTracks = m_textTracks)
textTracks->removeAllEventListeners();
if (RefPtr videoTracks = m_videoTracks)
videoTracks->removeAllEventListeners();
}
void HTMLMediaElement::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason attributeModificationReason)
{
switch (name.nodeName()) {
case AttributeNames::idAttr:
m_id = newValue;
break;
case AttributeNames::srcAttr:
// https://html.spec.whatwg.org/multipage/embedded-content.html#location-of-the-media-resource
// Location of the Media Resource
// 12 February 2017
// If a src attribute of a media element is set or changed, the user
// agent must invoke the media element's media element load algorithm.
if (!newValue.isNull())
prepareForLoad();
return;
case AttributeNames::controlsAttr:
configureMediaControls();
return;
case AttributeNames::loopAttr:
updateSleepDisabling();
if (RefPtr player = m_player)
player->isLoopingChanged();
return;
case AttributeNames::preloadAttr:
if (equalLettersIgnoringASCIICase(newValue, "none"_s))
m_preload = MediaPlayer::Preload::None;
else if (equalLettersIgnoringASCIICase(newValue, "metadata"_s))
m_preload = MediaPlayer::Preload::MetaData;
else {
// The spec does not define an "invalid value default" but "auto" is suggested as the
// "missing value default", so use it for everything except "none" and "metadata"
m_preload = MediaPlayer::Preload::Auto;
}
// The attribute must be ignored if the autoplay attribute is present
if (!autoplay() && !m_havePreparedToPlay && m_player)
RefPtr { m_player }->setPreload(mediaSession().effectivePreloadForElement());
return;
case AttributeNames::mediagroupAttr:
setMediaGroup(newValue);
return;
case AttributeNames::autoplayAttr:
if (processingUserGestureForMedia())
removeBehaviorRestrictionsAfterFirstUserGesture();
return;
case AttributeNames::titleAttr:
if (m_mediaSession)
m_mediaSession->clientCharacteristicsChanged(false);
return;
#if ENABLE(WIRELESS_PLAYBACK_TARGET)
case AttributeNames::webkitwirelessvideoplaybackdisabledAttr:
mediaSession().setWirelessVideoPlaybackDisabled(newValue != nullAtom());
FALLTHROUGH;
case AttributeNames::disableremoteplaybackAttr:
#if ENABLE(MEDIA_SOURCE)
case AttributeNames::webkitairplayAttr:
if (RefPtr mediaSource = m_mediaSource; mediaSource && isWirelessPlaybackTargetDisabled())
mediaSource->openIfDeferredOpen();
break;
#endif
#endif
default:
break;
}
HTMLElement::attributeChanged(name, oldValue, newValue, attributeModificationReason);
}
void HTMLMediaElement::finishParsingChildren()
{
HTMLElement::finishParsingChildren();
m_parsingInProgress = false;
if (childrenOfType<HTMLTrackElement>(*this).first())
scheduleConfigureTextTracks();
}
bool HTMLMediaElement::rendererIsNeeded(const RenderStyle& style)
{
return controls() && HTMLElement::rendererIsNeeded(style);
}
RenderPtr<RenderElement> HTMLMediaElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
{
return createRenderer<RenderMedia>(RenderObject::Type::Media, *this, WTFMove(style));
}
bool HTMLMediaElement::childShouldCreateRenderer(const Node& child) const
{
return hasShadowRootParent(child) && HTMLElement::childShouldCreateRenderer(child);
}
Node::InsertedIntoAncestorResult HTMLMediaElement::insertedIntoAncestor(InsertionType insertionType, ContainerNode& parentOfInsertedTree)
{
ALWAYS_LOG(LOGIDENTIFIER);
HTMLElement::insertedIntoAncestor(insertionType, parentOfInsertedTree);
if (insertionType.connectedToDocument)
setInActiveDocument(true);
if (!insertionType.connectedToDocument)
return InsertedIntoAncestorResult::Done;
return InsertedIntoAncestorResult::NeedsPostInsertionCallback;
}
void HTMLMediaElement::didFinishInsertingNode()
{
Ref protectedThis { *this }; // prepareForLoad may result in a 'beforeload' event, which can make arbitrary DOM mutations.
ALWAYS_LOG(LOGIDENTIFIER);
if (m_inActiveDocument && m_networkState == NETWORK_EMPTY && !attributeWithoutSynchronization(srcAttr).isEmpty())
prepareForLoad();
if (!m_explicitlyMuted) {
m_explicitlyMuted = true;
m_muted = hasAttributeWithoutSynchronization(mutedAttr);
mediaSession().canProduceAudioChanged();
}
configureMediaControls();
}
void HTMLMediaElement::pauseAfterDetachedTask()
{
// If we were re-inserted into an active document, no need to pause.
if (m_inActiveDocument)
return;
if (m_videoFullscreenMode != VideoFullscreenModePictureInPicture && m_networkState > NETWORK_EMPTY && !m_wasInterruptedForInvisibleAutoplay)
pause();
if (m_videoFullscreenMode == VideoFullscreenModeStandard)
exitFullscreen();
if (!m_player)
return;
size_t extraMemoryCost = m_player->extraMemoryCost();
if (extraMemoryCost > m_reportedExtraMemoryCost) {
JSC::VM& vm = commonVM();
JSC::JSLockHolder lock(vm);
size_t extraMemoryCostDelta = extraMemoryCost - m_reportedExtraMemoryCost;
m_reportedExtraMemoryCost = extraMemoryCost;
// FIXME: Adopt reportExtraMemoryVisited, and switch to reportExtraMemoryAllocated.
// https://bugs.webkit.org/show_bug.cgi?id=142595
vm.heap.deprecatedReportExtraMemory(extraMemoryCostDelta);
}
}
void HTMLMediaElement::removedFromAncestor(RemovalType removalType, ContainerNode& oldParentOfRemovedTree)
{
ALWAYS_LOG(LOGIDENTIFIER);
setInActiveDocument(false);
if (removalType.disconnectedFromDocument) {
// Pause asynchronously to let the operation that removed us finish, in case we get inserted back into a document.
queueTaskKeepingObjectAlive(*this, TaskSource::MediaElement, [this] {
if (!isContextStopped())
pauseAfterDetachedTask();
});
}
if (m_mediaSession)
m_mediaSession->clientCharacteristicsChanged(false);
HTMLElement::removedFromAncestor(removalType, oldParentOfRemovedTree);
}
void HTMLMediaElement::willAttachRenderers()
{
ASSERT(!renderer());
}
inline void HTMLMediaElement::updateRenderer()
{
if (CheckedPtr renderer = this->renderer())
renderer->updateFromElement();
if (RefPtr mediaControlsHost = m_mediaControlsHost)
mediaControlsHost->updateCaptionDisplaySizes();
if (RefPtr player = m_player)