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webkit / WebKit / 72754bab0fc658467f19b4c75e1c11a064ee0a1e / . / Source / WebCore / html / HTMLMediaElement.cpp
blob: d368bada5da0ba62c651a48167493eb792f257b4 [file] [log] [blame]
/*
* Copyright (C) 2007-2014 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. ``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"
#if ENABLE(VIDEO)
#include "HTMLMediaElement.h"
#include "ApplicationCacheHost.h"
#include "ApplicationCacheResource.h"
#include "Attribute.h"
#include "CSSPropertyNames.h"
#include "CSSValueKeywords.h"
#include "ChromeClient.h"
#include "ClientRect.h"
#include "ClientRectList.h"
#include "ContentSecurityPolicy.h"
#include "ContentType.h"
#include "CookieJar.h"
#include "DiagnosticLoggingKeys.h"
#include "DisplaySleepDisabler.h"
#include "DocumentLoader.h"
#include "ElementIterator.h"
#include "EventNames.h"
#include "ExceptionCodePlaceholder.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "FrameView.h"
#include "HTMLSourceElement.h"
#include "HTMLVideoElement.h"
#include "JSHTMLMediaElement.h"
#include "Language.h"
#include "Logging.h"
#include "MIMETypeRegistry.h"
#include "MainFrame.h"
#include "MediaController.h"
#include "MediaControls.h"
#include "MediaDocument.h"
#include "MediaError.h"
#include "MediaFragmentURIParser.h"
#include "MediaKeyEvent.h"
#include "MediaList.h"
#include "MediaQueryEvaluator.h"
#include "MediaSessionManager.h"
#include "NetworkingContext.h"
#include "PageActivityAssertionToken.h"
#include "PageGroup.h"
#include "PageThrottler.h"
#include "ProgressTracker.h"
#include "RenderLayerCompositor.h"
#include "RenderVideo.h"
#include "RenderView.h"
#include "ScriptController.h"
#include "ScriptSourceCode.h"
#include "SecurityPolicy.h"
#include "SessionID.h"
#include "Settings.h"
#include "ShadowRoot.h"
#include "TimeRanges.h"
#include <limits>
#include <runtime/Uint8Array.h>
#include <wtf/CurrentTime.h>
#include <wtf/MathExtras.h>
#include <wtf/Ref.h>
#include <wtf/text/CString.h>
#if ENABLE(VIDEO_TRACK)
#include "AudioTrackList.h"
#include "HTMLTrackElement.h"
#include "InbandGenericTextTrack.h"
#include "InbandTextTrackPrivate.h"
#include "InbandWebVTTTextTrack.h"
#include "RuntimeEnabledFeatures.h"
#include "TextTrackCueList.h"
#include "TextTrackList.h"
#include "VideoTrackList.h"
#endif
#if ENABLE(WEB_AUDIO)
#include "AudioSourceProvider.h"
#include "MediaElementAudioSourceNode.h"
#endif
#if PLATFORM(IOS)
#include "RuntimeApplicationChecksIOS.h"
#endif
#if ENABLE(IOS_AIRPLAY)
#include "WebKitPlaybackTargetAvailabilityEvent.h"
#endif
#if ENABLE(MEDIA_SOURCE)
#include "DOMWindow.h"
#include "MediaSource.h"
#include "Performance.h"
#include "VideoPlaybackQuality.h"
#endif
#if ENABLE(MEDIA_STREAM)
#include "MediaStream.h"
#include "MediaStreamRegistry.h"
#endif
#if ENABLE(ENCRYPTED_MEDIA_V2)
#include "MediaKeyNeededEvent.h"
#include "MediaKeys.h"
#endif
#if USE(PLATFORM_TEXT_TRACK_MENU)
#include "PlatformTextTrack.h"
#endif
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
#include "JSMediaControlsHost.h"
#include "MediaControlsHost.h"
#include "ScriptGlobalObject.h"
#include <bindings/ScriptObject.h>
#endif
namespace WebCore {
static const double SeekRepeatDelay = 0.1;
static const double SeekTime = 0.2;
static const double ScanRepeatDelay = 1.5;
static const double ScanMaximumRate = 8;
static void setFlags(unsigned& value, unsigned flags)
{
value |= flags;
}
static void clearFlags(unsigned& value, unsigned flags)
{
value &= ~flags;
}
#if !LOG_DISABLED
static String urlForLoggingMedia(const URL& url)
{
static const unsigned maximumURLLengthForLogging = 128;
if (url.string().length() < maximumURLLengthForLogging)
return url.string();
return url.string().substring(0, maximumURLLengthForLogging) + "...";
}
static const char* boolString(bool val)
{
return val ? "true" : "false";
}
#endif
#ifndef LOG_MEDIA_EVENTS
// Default to not logging events because so many are generated they can overwhelm the rest of
// the logging.
#define LOG_MEDIA_EVENTS 0
#endif
#ifndef LOG_CACHED_TIME_WARNINGS
// Default to not logging warnings about excessive drift in the cached media time because it adds a
// fair amount of overhead and logging.
#define LOG_CACHED_TIME_WARNINGS 0
#endif
#if ENABLE(MEDIA_SOURCE)
// URL protocol used to signal that the media source API is being used.
static const char* mediaSourceBlobProtocol = "blob";
#endif
using namespace HTMLNames;
typedef HashMap<Document*, HashSet<HTMLMediaElement*>> DocumentElementSetMap;
static DocumentElementSetMap& documentToElementSetMap()
{
DEPRECATED_DEFINE_STATIC_LOCAL(DocumentElementSetMap, map, ());
return map;
}
static void addElementToDocumentMap(HTMLMediaElement& element, Document& document)
{
DocumentElementSetMap& map = documentToElementSetMap();
HashSet<HTMLMediaElement*> set = map.take(&document);
set.add(&element);
map.add(&document, set);
}
static void removeElementFromDocumentMap(HTMLMediaElement& element, Document& document)
{
DocumentElementSetMap& map = documentToElementSetMap();
HashSet<HTMLMediaElement*> set = map.take(&document);
set.remove(&element);
if (!set.isEmpty())
map.add(&document, set);
}
#if ENABLE(ENCRYPTED_MEDIA)
static ExceptionCode exceptionCodeForMediaKeyException(MediaPlayer::MediaKeyException exception)
{
switch (exception) {
case MediaPlayer::NoError:
return 0;
case MediaPlayer::InvalidPlayerState:
return INVALID_STATE_ERR;
case MediaPlayer::KeySystemNotSupported:
return NOT_SUPPORTED_ERR;
}
ASSERT_NOT_REACHED();
return INVALID_STATE_ERR;
}
#endif
#if ENABLE(VIDEO_TRACK)
class TrackDisplayUpdateScope {
public:
TrackDisplayUpdateScope(HTMLMediaElement* mediaElement)
{
m_mediaElement = mediaElement;
m_mediaElement->beginIgnoringTrackDisplayUpdateRequests();
}
~TrackDisplayUpdateScope()
{
ASSERT(m_mediaElement);
m_mediaElement->endIgnoringTrackDisplayUpdateRequests();
}
private:
HTMLMediaElement* m_mediaElement;
};
#endif
HTMLMediaElement::HTMLMediaElement(const QualifiedName& tagName, Document& document, bool createdByParser)
: HTMLElement(tagName, document)
, ActiveDOMObject(&document)
, m_loadTimer(this, &HTMLMediaElement::loadTimerFired)
, m_progressEventTimer(this, &HTMLMediaElement::progressEventTimerFired)
, m_playbackProgressTimer(this, &HTMLMediaElement::playbackProgressTimerFired)
, m_scanTimer(this, &HTMLMediaElement::scanTimerFired)
, m_seekTimer(this, &HTMLMediaElement::seekTimerFired)
, m_playedTimeRanges()
, m_asyncEventQueue(*this)
, m_playbackRate(1.0f)
, m_defaultPlaybackRate(1.0f)
, m_webkitPreservesPitch(true)
, m_networkState(NETWORK_EMPTY)
, m_readyState(HAVE_NOTHING)
, m_readyStateMaximum(HAVE_NOTHING)
, m_volume(1.0f)
, m_volumeInitialized(false)
, m_previousProgressTime(std::numeric_limits<double>::max())
, m_clockTimeAtLastUpdateEvent(0)
, m_lastTimeUpdateEventMovieTime(MediaTime::positiveInfiniteTime())
, m_loadState(WaitingForSource)
#if PLATFORM(IOS)
, m_videoFullscreenGravity(MediaPlayer::VideoGravityResizeAspect)
#endif
, m_preload(MediaPlayer::Auto)
, m_displayMode(Unknown)
, m_processingMediaPlayerCallback(0)
#if ENABLE(MEDIA_SOURCE)
, m_droppedVideoFrames(0)
#endif
, m_clockTimeAtLastCachedTimeUpdate(0)
, m_minimumClockTimeToUpdateCachedTime(0)
, m_pendingActionFlags(0)
, m_actionAfterScan(Nothing)
, m_scanType(Scan)
, m_scanDirection(Forward)
, 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_paused(true)
, m_seeking(false)
, m_sentStalledEvent(false)
, m_sentEndEvent(false)
, m_pausedInternal(false)
, m_sendProgressEvents(true)
, m_isInVideoFullscreen(false)
, m_closedCaptionsVisible(false)
, m_webkitLegacyClosedCaptionOverride(false)
, m_completelyLoaded(false)
, m_havePreparedToPlay(false)
, m_parsingInProgress(createdByParser)
, m_elementIsHidden(document.hidden())
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
, m_mediaControlsDependOnPageScaleFactor(false)
#endif
#if ENABLE(VIDEO_TRACK)
, m_tracksAreReady(true)
, m_haveVisibleTextTrack(false)
, m_processingPreferenceChange(false)
, m_lastTextTrackUpdateTime(MediaTime(-1, 1))
, m_captionDisplayMode(CaptionUserPreferences::Automatic)
, m_audioTracks(0)
, m_textTracks(0)
, m_videoTracks(0)
, m_ignoreTrackDisplayUpdate(0)
#endif
#if ENABLE(WEB_AUDIO)
, m_audioSourceNode(0)
#endif
, m_mediaSession(HTMLMediaSession::create(*this))
, m_reportedExtraMemoryCost(0)
#if ENABLE(MEDIA_STREAM)
, m_mediaStreamSrcObject(nullptr)
#endif
{
LOG(Media, "HTMLMediaElement::HTMLMediaElement(%p)", this);
setHasCustomStyleResolveCallbacks();
m_mediaSession->addBehaviorRestriction(HTMLMediaSession::RequireUserGestureForFullscreen);
m_mediaSession->addBehaviorRestriction(HTMLMediaSession::RequirePageConsentToLoadMedia);
// FIXME: We should clean up and look to better merge the iOS and non-iOS code below.
Settings* settings = document.settings();
#if !PLATFORM(IOS)
if (settings && settings->mediaPlaybackRequiresUserGesture()) {
m_mediaSession->addBehaviorRestriction(HTMLMediaSession::RequireUserGestureForRateChange);
m_mediaSession->addBehaviorRestriction(HTMLMediaSession::RequireUserGestureForLoad);
}
#else
m_sendProgressEvents = false;
if (!settings || settings->mediaPlaybackRequiresUserGesture()) {
// Allow autoplay in a MediaDocument that is not in an iframe.
if (document.ownerElement() || !document.isMediaDocument())
m_mediaSession->addBehaviorRestriction(HTMLMediaSession::RequireUserGestureForRateChange);
#if ENABLE(IOS_AIRPLAY)
m_mediaSession->addBehaviorRestriction(HTMLMediaSession::RequireUserGestureToShowPlaybackTargetPicker);
#endif
} else {
// Relax RequireUserGestureForFullscreen when mediaPlaybackRequiresUserGesture is not set:
m_mediaSession->removeBehaviorRestriction(HTMLMediaSession::RequireUserGestureForFullscreen);
}
#endif // !PLATFORM(IOS)
#if ENABLE(VIDEO_TRACK)
if (document.page())
m_captionDisplayMode = document.page()->group().captionPreferences()->captionDisplayMode();
#endif
registerWithDocument(document);
}
HTMLMediaElement::~HTMLMediaElement()
{
LOG(Media, "HTMLMediaElement::~HTMLMediaElement(%p)", this);
m_asyncEventQueue.close();
setShouldDelayLoadEvent(false);
unregisterWithDocument(document());
#if ENABLE(VIDEO_TRACK)
if (m_audioTracks) {
m_audioTracks->clearElement();
for (unsigned i = 0; i < m_audioTracks->length(); ++i)
m_audioTracks->item(i)->clearClient();
}
if (m_textTracks)
m_textTracks->clearElement();
if (m_textTracks) {
for (unsigned i = 0; i < m_textTracks->length(); ++i)
m_textTracks->item(i)->clearClient();
}
if (m_videoTracks) {
m_videoTracks->clearElement();
for (unsigned i = 0; i < m_videoTracks->length(); ++i)
m_videoTracks->item(i)->clearClient();
}
#endif
#if ENABLE(IOS_AIRPLAY)
if (!hasEventListeners(eventNames().webkitplaybacktargetavailabilitychangedEvent))
m_mediaSession->setHasPlaybackTargetAvailabilityListeners(*this, false);
#endif
if (m_mediaController) {
m_mediaController->removeMediaElement(this);
m_mediaController = 0;
}
#if ENABLE(MEDIA_SOURCE)
closeMediaSource();
#endif
#if ENABLE(ENCRYPTED_MEDIA_V2)
setMediaKeys(0);
#endif
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
if (m_isolatedWorld)
m_isolatedWorld->clearWrappers();
#endif
m_completelyLoaded = true;
if (m_player)
m_player->clearMediaPlayerClient();
}
void HTMLMediaElement::registerWithDocument(Document& document)
{
if (m_isWaitingUntilMediaCanStart)
document.addMediaCanStartListener(this);
#if !PLATFORM(IOS)
document.registerForMediaVolumeCallbacks(this);
document.registerForPrivateBrowsingStateChangedCallbacks(this);
#endif
document.registerForVisibilityStateChangedCallbacks(this);
#if ENABLE(VIDEO_TRACK)
document.registerForCaptionPreferencesChangedCallbacks(this);
#endif
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
if (m_mediaControlsDependOnPageScaleFactor)
document.registerForPageScaleFactorChangedCallbacks(this);
#endif
addElementToDocumentMap(*this, document);
}
void HTMLMediaElement::unregisterWithDocument(Document& document)
{
if (m_isWaitingUntilMediaCanStart)
document.removeMediaCanStartListener(this);
#if !PLATFORM(IOS)
document.unregisterForMediaVolumeCallbacks(this);
document.unregisterForPrivateBrowsingStateChangedCallbacks(this);
#endif
document.unregisterForVisibilityStateChangedCallbacks(this);
#if ENABLE(VIDEO_TRACK)
document.unregisterForCaptionPreferencesChangedCallbacks(this);
#endif
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
if (m_mediaControlsDependOnPageScaleFactor)
document.unregisterForPageScaleFactorChangedCallbacks(this);
#endif
removeElementFromDocumentMap(*this, document);
}
void HTMLMediaElement::didMoveToNewDocument(Document* oldDocument)
{
if (m_shouldDelayLoadEvent) {
if (oldDocument)
oldDocument->decrementLoadEventDelayCount();
document().incrementLoadEventDelayCount();
}
if (oldDocument) {
unregisterWithDocument(*oldDocument);
}
registerWithDocument(document());
HTMLElement::didMoveToNewDocument(oldDocument);
}
bool HTMLMediaElement::hasCustomFocusLogic() const
{
return true;
}
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;
}
void HTMLMediaElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (name == srcAttr) {
#if PLATFORM(IOS)
// Note, unless the restriction on requiring user action has been removed,
// do not begin downloading data on iOS.
if (!value.isNull() && m_mediaSession->dataLoadingPermitted(*this)) {
#else
// Trigger a reload, as long as the 'src' attribute is present.
if (!value.isNull()) {
#endif
clearMediaPlayer(LoadMediaResource);
scheduleDelayedAction(LoadMediaResource);
}
} else if (name == controlsAttr)
configureMediaControls();
else if (name == loopAttr)
updateSleepDisabling();
else if (name == preloadAttr) {
if (equalIgnoringCase(value, "none"))
m_preload = MediaPlayer::None;
else if (equalIgnoringCase(value, "metadata"))
m_preload = MediaPlayer::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::Auto;
}
// The attribute must be ignored if the autoplay attribute is present
if (!autoplay() && m_player)
m_player->setPreload(m_mediaSession->effectivePreloadForElement(*this));
} else if (name == mediagroupAttr)
setMediaGroup(value);
else if (name == onabortAttr)
setAttributeEventListener(eventNames().abortEvent, name, value);
else if (name == onbeforeloadAttr)
setAttributeEventListener(eventNames().beforeloadEvent, name, value);
else if (name == oncanplayAttr)
setAttributeEventListener(eventNames().canplayEvent, name, value);
else if (name == oncanplaythroughAttr)
setAttributeEventListener(eventNames().canplaythroughEvent, name, value);
else if (name == ondurationchangeAttr)
setAttributeEventListener(eventNames().durationchangeEvent, name, value);
else if (name == onemptiedAttr)
setAttributeEventListener(eventNames().emptiedEvent, name, value);
else if (name == onendedAttr)
setAttributeEventListener(eventNames().endedEvent, name, value);
else if (name == onerrorAttr)
setAttributeEventListener(eventNames().errorEvent, name, value);
else if (name == onloadeddataAttr)
setAttributeEventListener(eventNames().loadeddataEvent, name, value);
else if (name == onloadedmetadataAttr)
setAttributeEventListener(eventNames().loadedmetadataEvent, name, value);
else if (name == onloadstartAttr)
setAttributeEventListener(eventNames().loadstartEvent, name, value);
else if (name == onpauseAttr)
setAttributeEventListener(eventNames().pauseEvent, name, value);
else if (name == onplayAttr)
setAttributeEventListener(eventNames().playEvent, name, value);
else if (name == onplayingAttr)
setAttributeEventListener(eventNames().playingEvent, name, value);
else if (name == onprogressAttr)
setAttributeEventListener(eventNames().progressEvent, name, value);
else if (name == onratechangeAttr)
setAttributeEventListener(eventNames().ratechangeEvent, name, value);
else if (name == onseekedAttr)
setAttributeEventListener(eventNames().seekedEvent, name, value);
else if (name == onseekingAttr)
setAttributeEventListener(eventNames().seekingEvent, name, value);
else if (name == onstalledAttr)
setAttributeEventListener(eventNames().stalledEvent, name, value);
else if (name == onsuspendAttr)
setAttributeEventListener(eventNames().suspendEvent, name, value);
else if (name == ontimeupdateAttr)
setAttributeEventListener(eventNames().timeupdateEvent, name, value);
else if (name == onvolumechangeAttr)
setAttributeEventListener(eventNames().volumechangeEvent, name, value);
else if (name == onwaitingAttr)
setAttributeEventListener(eventNames().waitingEvent, name, value);
else if (name == onwebkitbeginfullscreenAttr)
setAttributeEventListener(eventNames().webkitbeginfullscreenEvent, name, value);
else if (name == onwebkitendfullscreenAttr)
setAttributeEventListener(eventNames().webkitendfullscreenEvent, name, value);
#if ENABLE(IOS_AIRPLAY)
else if (name == onwebkitcurrentplaybacktargetiswirelesschangedAttr)
setAttributeEventListener(eventNames().webkitcurrentplaybacktargetiswirelesschangedEvent, name, value);
else if (name == onwebkitplaybacktargetavailabilitychangedAttr)
setAttributeEventListener(eventNames().webkitplaybacktargetavailabilitychangedEvent, name, value);
#endif
else
HTMLElement::parseAttribute(name, value);
}
void HTMLMediaElement::finishParsingChildren()
{
HTMLElement::finishParsingChildren();
m_parsingInProgress = false;
#if ENABLE(VIDEO_TRACK)
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return;
if (descendantsOfType<HTMLTrackElement>(*this).first())
scheduleDelayedAction(ConfigureTextTracks);
#endif
}
bool HTMLMediaElement::rendererIsNeeded(const RenderStyle& style)
{
return controls() && HTMLElement::rendererIsNeeded(style);
}
RenderPtr<RenderElement> HTMLMediaElement::createElementRenderer(PassRef<RenderStyle> style)
{
return createRenderer<RenderMedia>(*this, WTF::move(style));
}
bool HTMLMediaElement::childShouldCreateRenderer(const Node& child) const
{
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
return hasShadowRootParent(child) && HTMLElement::childShouldCreateRenderer(child);
#else
if (!hasMediaControls())
return false;
// <media> doesn't allow its content, including shadow subtree, to
// be rendered. So this should return false for most of the children.
// One exception is a shadow tree built for rendering controls which should be visible.
// So we let them go here by comparing its subtree root with one of the controls.
return &mediaControls()->treeScope() == &child.treeScope()
&& hasShadowRootParent(child)
&& HTMLElement::childShouldCreateRenderer(child);
#endif
}
Node::InsertionNotificationRequest HTMLMediaElement::insertedInto(ContainerNode& insertionPoint)
{
LOG(Media, "HTMLMediaElement::insertedInto(%p)", this);
HTMLElement::insertedInto(insertionPoint);
if (insertionPoint.inDocument()) {
m_inActiveDocument = true;
#if PLATFORM(IOS)
if (m_networkState == NETWORK_EMPTY && !fastGetAttribute(srcAttr).isEmpty() && m_mediaSession->dataLoadingPermitted(*this))
#else
if (m_networkState == NETWORK_EMPTY && !fastGetAttribute(srcAttr).isEmpty())
#endif
scheduleDelayedAction(LoadMediaResource);
}
if (!m_explicitlyMuted) {
m_explicitlyMuted = true;
m_muted = fastHasAttribute(mutedAttr);
}
configureMediaControls();
return InsertionDone;
}
void HTMLMediaElement::removedFrom(ContainerNode& insertionPoint)
{
LOG(Media, "HTMLMediaElement::removedFrom(%p)", this);
m_inActiveDocument = false;
if (insertionPoint.inDocument()) {
if (hasMediaControls())
mediaControls()->hide();
if (m_networkState > NETWORK_EMPTY)
pause();
if (m_isInVideoFullscreen)
exitFullscreen();
if (m_player) {
JSC::VM& vm = JSDOMWindowBase::commonVM();
JSC::JSLockHolder lock(vm);
size_t extraMemoryCost = m_player->extraMemoryCost();
size_t extraMemoryCostDelta = extraMemoryCost - m_reportedExtraMemoryCost;
m_reportedExtraMemoryCost = extraMemoryCost;
if (extraMemoryCostDelta > 0)
vm.heap.reportExtraMemoryCost(extraMemoryCostDelta);
}
}
HTMLElement::removedFrom(insertionPoint);
}
void HTMLMediaElement::willAttachRenderers()
{
ASSERT(!renderer());
}
void HTMLMediaElement::didAttachRenderers()
{
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::didRecalcStyle(Style::Change)
{
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::scheduleDelayedAction(DelayedActionType actionType)
{
LOG(Media, "HTMLMediaElement::scheduleLoad(%p)", this);
if ((actionType & LoadMediaResource) && !(m_pendingActionFlags & LoadMediaResource)) {
prepareForLoad();
setFlags(m_pendingActionFlags, LoadMediaResource);
}
#if ENABLE(VIDEO_TRACK)
if (RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled() && (actionType & ConfigureTextTracks))
setFlags(m_pendingActionFlags, ConfigureTextTracks);
#endif
#if USE(PLATFORM_TEXT_TRACK_MENU)
if (actionType & TextTrackChangesNotification)
setFlags(m_pendingActionFlags, TextTrackChangesNotification);
#endif
m_loadTimer.startOneShot(0);
}
void HTMLMediaElement::scheduleNextSourceChild()
{
// Schedule the timer to try the next <source> element WITHOUT resetting state ala prepareForLoad.
setFlags(m_pendingActionFlags, LoadMediaResource);
m_loadTimer.startOneShot(0);
}
void HTMLMediaElement::scheduleEvent(const AtomicString& eventName)
{
#if LOG_MEDIA_EVENTS
LOG(Media, "HTMLMediaElement::scheduleEvent(%p) - scheduling '%s'", this, eventName.string().ascii().data());
#endif
RefPtr<Event> event = Event::create(eventName, false, true);
// Don't set the event target, the event queue will set it in GenericEventQueue::timerFired and setting it here
// will trigger an ASSERT if this element has been marked for deletion.
m_asyncEventQueue.enqueueEvent(event.release());
}
void HTMLMediaElement::loadTimerFired(Timer<HTMLMediaElement>&)
{
Ref<HTMLMediaElement> protect(*this); // loadNextSourceChild may fire 'beforeload', which can make arbitrary DOM mutations.
#if ENABLE(VIDEO_TRACK)
if (RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled() && (m_pendingActionFlags & ConfigureTextTracks))
configureTextTracks();
#endif
if (m_pendingActionFlags & LoadMediaResource) {
if (m_loadState == LoadingFromSourceElement)
loadNextSourceChild();
else
loadInternal();
}
#if USE(PLATFORM_TEXT_TRACK_MENU)
if (RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled() && (m_pendingActionFlags & TextTrackChangesNotification))
notifyMediaPlayerOfTextTrackChanges();
#endif
m_pendingActionFlags = 0;
}
PassRefPtr<MediaError> HTMLMediaElement::error() const
{
return m_error;
}
void HTMLMediaElement::setSrc(const String& url)
{
setAttribute(srcAttr, url);
}
#if ENABLE(MEDIA_STREAM)
void HTMLMediaElement::setSrcObject(MediaStream* mediaStream)
{
// FIXME: Setting the srcObject attribute may cause other changes to the media element's internal state:
// Specifically, if srcObject is specified, the UA must use it as the source of media, even if the src
// attribute is also set or children are present. If the value of srcObject is replaced or set to null
// the UA must re-run the media element load algorithm.
//
// https://bugs.webkit.org/show_bug.cgi?id=124896
m_mediaStreamSrcObject = mediaStream;
}
#endif
HTMLMediaElement::NetworkState HTMLMediaElement::networkState() const
{
return m_networkState;
}
String HTMLMediaElement::canPlayType(const String& mimeType, const String& keySystem, const URL& url) const
{
MediaEngineSupportParameters parameters;
ContentType contentType(mimeType);
parameters.type = contentType.type().lower();
parameters.codecs = contentType.parameter(ASCIILiteral("codecs"));
parameters.url = url;
#if ENABLE(ENCRYPTED_MEDIA)
parameters.keySystem = keySystem;
#else
UNUSED_PARAM(keySystem);
#endif
MediaPlayer::SupportsType support = MediaPlayer::supportsType(parameters, this);
String canPlay;
// 4.8.10.3
switch (support)
{
case MediaPlayer::IsNotSupported:
canPlay = emptyString();
break;
case MediaPlayer::MayBeSupported:
canPlay = ASCIILiteral("maybe");
break;
case MediaPlayer::IsSupported:
canPlay = ASCIILiteral("probably");
break;
}
LOG(Media, "HTMLMediaElement::canPlayType(%p) - [%s, %s, %s] -> %s", this, mimeType.utf8().data(), keySystem.utf8().data(), url.stringCenterEllipsizedToLength().utf8().data(), canPlay.utf8().data());
return canPlay;
}
void HTMLMediaElement::load()
{
Ref<HTMLMediaElement> protect(*this); // loadInternal may result in a 'beforeload' event, which can make arbitrary DOM mutations.
LOG(Media, "HTMLMediaElement::load(%p)", this);
if (!m_mediaSession->dataLoadingPermitted(*this))
return;
if (ScriptController::processingUserGesture())
removeBehaviorsRestrictionsAfterFirstUserGesture();
prepareForLoad();
loadInternal();
prepareToPlay();
}
void HTMLMediaElement::prepareForLoad()
{
LOG(Media, "HTMLMediaElement::prepareForLoad(%p)", this);
// Perform the cleanup required for the resource load algorithm to run.
stopPeriodicTimers();
m_loadTimer.stop();
// FIXME: Figure out appropriate place to reset LoadTextTrackResource if necessary and set m_pendingActionFlags to 0 here.
m_pendingActionFlags &= ~LoadMediaResource;
m_sentEndEvent = false;
m_sentStalledEvent = false;
m_haveFiredLoadedData = false;
m_completelyLoaded = false;
m_havePreparedToPlay = false;
m_displayMode = Unknown;
m_currentSrc = URL();
// 1 - Abort any already-running instance of the resource selection algorithm for this element.
m_loadState = WaitingForSource;
m_currentSourceNode = 0;
// 2 - If there are any tasks from the media element's media element event task source in
// one of the task queues, then remove those tasks.
cancelPendingEventsAndCallbacks();
// 3 - If the media element's networkState is set to NETWORK_LOADING or NETWORK_IDLE, queue
// a task to fire a simple event named abort at the media element.
if (m_networkState == NETWORK_LOADING || m_networkState == NETWORK_IDLE)
scheduleEvent(eventNames().abortEvent);
#if ENABLE(MEDIA_SOURCE)
closeMediaSource();
#endif
createMediaPlayer();
// 4 - If the media element's networkState is not set to NETWORK_EMPTY, then run these substeps
if (m_networkState != NETWORK_EMPTY) {
// 4.1 - Queue a task to fire a simple event named emptied at the media element.
scheduleEvent(eventNames().emptiedEvent);
// 4.2 - If a fetching process is in progress for the media element, the user agent should stop it.
m_networkState = NETWORK_EMPTY;
// 4.3 - Forget the media element's media-resource-specific tracks.
forgetResourceSpecificTracks();
// 4.4 - If readyState is not set to HAVE_NOTHING, then set it to that state.
m_readyState = HAVE_NOTHING;
m_readyStateMaximum = HAVE_NOTHING;
// 4.5 - If the paused attribute is false, then set it to true.
m_paused = true;
// 4.6 - If seeking is true, set it to false.
m_seeking = false;
// 4.7 - Set the current playback position to 0.
// Set the official playback position to 0.
// If this changed the official playback position, then queue a task to fire a simple event named timeupdate at the media element.
// FIXME: Add support for firing this event. e.g., scheduleEvent(eventNames().timeUpdateEvent);
// 4.8 - Set the initial playback position to 0.
// FIXME: Make this less subtle. The position only becomes 0 because of the createMediaPlayer() call
// above.
refreshCachedTime();
invalidateCachedTime();
// 4.9 - Set the timeline offset to Not-a-Number (NaN).
// 4.10 - Update the duration attribute to Not-a-Number (NaN).
updateMediaController();
#if ENABLE(VIDEO_TRACK)
if (RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
updateActiveTextTrackCues(MediaTime::zeroTime());
#endif
}
// 5 - Set the playbackRate attribute to the value of the defaultPlaybackRate attribute.
setPlaybackRate(defaultPlaybackRate());
// 6 - Set the error attribute to null and the autoplaying flag to true.
m_error = 0;
m_autoplaying = true;
// 7 - Invoke the media element's resource selection algorithm.
// 8 - Note: Playback of any previously playing media resource for this element stops.
// The resource selection algorithm
// 1 - Set the networkState to NETWORK_NO_SOURCE
m_networkState = NETWORK_NO_SOURCE;
// 2 - Asynchronously await a stable state.
m_playedTimeRanges = TimeRanges::create();
// FIXME: Investigate whether these can be moved into m_networkState != NETWORK_EMPTY block above
// so they are closer to the relevant spec steps.
m_lastSeekTime = MediaTime::zeroTime();
// The spec doesn't say to block the load event until we actually run the asynchronous section
// algorithm, but do it now because we won't start that until after the timer fires and the
// event may have already fired by then.
MediaPlayer::Preload effectivePreload = m_mediaSession->effectivePreloadForElement(*this);
if (effectivePreload != MediaPlayer::None)
setShouldDelayLoadEvent(true);
#if PLATFORM(IOS)
Settings* settings = document().settings();
if (effectivePreload != MediaPlayer::None && settings && settings->mediaDataLoadsAutomatically())
prepareToPlay();
#endif
configureMediaControls();
}
void HTMLMediaElement::loadInternal()
{
// Some of the code paths below this function dispatch the BeforeLoad event. This ASSERT helps
// us catch those bugs more quickly without needing all the branches to align to actually
// trigger the event.
ASSERT(!NoEventDispatchAssertion::isEventDispatchForbidden());
// If we can't start a load right away, start it later.
if (!m_mediaSession->pageAllowsDataLoading(*this)) {
setShouldDelayLoadEvent(false);
if (m_isWaitingUntilMediaCanStart)
return;
document().addMediaCanStartListener(this);
m_isWaitingUntilMediaCanStart = true;
return;
}
clearFlags(m_pendingActionFlags, LoadMediaResource);
// Once the page has allowed an element to load media, it is free to load at will. This allows a
// playlist that starts in a foreground tab to continue automatically if the tab is subsequently
// put into the background.
m_mediaSession->removeBehaviorRestriction(HTMLMediaSession::RequirePageConsentToLoadMedia);
#if ENABLE(VIDEO_TRACK)
if (hasMediaControls())
mediaControls()->changedClosedCaptionsVisibility();
// HTMLMediaElement::textTracksAreReady will need "... the text tracks whose mode was not in the
// disabled state when the element's resource selection algorithm last started".
if (RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled()) {
m_textTracksWhenResourceSelectionBegan.clear();
if (m_textTracks) {
for (unsigned i = 0; i < m_textTracks->length(); ++i) {
TextTrack* track = m_textTracks->item(i);
if (track->mode() != TextTrack::disabledKeyword())
m_textTracksWhenResourceSelectionBegan.append(track);
}
}
}
#endif
selectMediaResource();
}
void HTMLMediaElement::selectMediaResource()
{
LOG(Media, "HTMLMediaElement::selectMediaResource(%p)", this);
enum Mode { attribute, children };
// 3 - If the media element has a src attribute, then let mode be attribute.
Mode mode = attribute;
if (!fastHasAttribute(srcAttr)) {
// Otherwise, if the media element does not have a src attribute but has a source
// element child, then let mode be children and let candidate be the first such
// source element child in tree order.
if (auto firstSource = childrenOfType<HTMLSourceElement>(*this).first()) {
mode = children;
m_nextChildNodeToConsider = firstSource;
m_currentSourceNode = 0;
} else {
// Otherwise the media element has neither a src attribute nor a source element
// child: set the networkState to NETWORK_EMPTY, and abort these steps; the
// synchronous section ends.
m_loadState = WaitingForSource;
setShouldDelayLoadEvent(false);
m_networkState = NETWORK_EMPTY;
LOG(Media, "HTMLMediaElement::selectMediaResource(%p) - nothing to load", this);
return;
}
}
// 4 - Set the media element's delaying-the-load-event flag to true (this delays the load event),
// and set its networkState to NETWORK_LOADING.
setShouldDelayLoadEvent(true);
m_networkState = NETWORK_LOADING;
// 5 - Queue a task to fire a simple event named loadstart at the media element.
scheduleEvent(eventNames().loadstartEvent);
// 6 - If mode is attribute, then run these substeps
if (mode == attribute) {
m_loadState = LoadingFromSrcAttr;
// If the src attribute's value is the empty string ... jump down to the failed step below
URL mediaURL = getNonEmptyURLAttribute(srcAttr);
if (mediaURL.isEmpty()) {
mediaLoadingFailed(MediaPlayer::FormatError);
LOG(Media, "HTMLMediaElement::selectMediaResource(%p) - empty 'src'", this);
return;
}
if (!isSafeToLoadURL(mediaURL, Complain) || !dispatchBeforeLoadEvent(mediaURL.string())) {
mediaLoadingFailed(MediaPlayer::FormatError);
return;
}
// No type or key system information is available when the url comes
// from the 'src' attribute so MediaPlayer
// will have to pick a media engine based on the file extension.
ContentType contentType((String()));
loadResource(mediaURL, contentType, String());
LOG(Media, "HTMLMediaElement::selectMediaResource(%p) - using 'src' attribute url", this);
return;
}
// Otherwise, the source elements will be used
loadNextSourceChild();
}
void HTMLMediaElement::loadNextSourceChild()
{
ContentType contentType((String()));
String keySystem;
URL mediaURL = selectNextSourceChild(&contentType, &keySystem, Complain);
if (!mediaURL.isValid()) {
waitForSourceChange();
return;
}
// Recreate the media player for the new url
createMediaPlayer();
m_loadState = LoadingFromSourceElement;
loadResource(mediaURL, contentType, keySystem);
}
static URL createFileURLForApplicationCacheResource(const String& path)
{
// URL should have a function to create a url from a path, but it does not. This function
// is not suitable because URL::setPath uses encodeWithURLEscapeSequences, which it notes
// does not correctly escape '#' and '?'. This function works for our purposes because
// app cache media files are always created with encodeForFileName(createCanonicalUUIDString()).
#if USE(CF) && PLATFORM(WIN)
RetainPtr<CFURLRef> cfURL = adoptCF(CFURLCreateWithFileSystemPath(0, path.createCFString().get(), kCFURLWindowsPathStyle, false));
URL url(cfURL.get());
#else
URL url;
url.setProtocol(ASCIILiteral("file"));
url.setPath(path);
#endif
return url;
}
void HTMLMediaElement::loadResource(const URL& initialURL, ContentType& contentType, const String& keySystem)
{
ASSERT(isSafeToLoadURL(initialURL, Complain));
LOG(Media, "HTMLMediaElement::loadResource(%p) - %s, %s, %s", this, urlForLoggingMedia(initialURL).utf8().data(), contentType.raw().utf8().data(), keySystem.utf8().data());
Frame* frame = document().frame();
if (!frame) {
mediaLoadingFailed(MediaPlayer::FormatError);
return;
}
URL url = initialURL;
if (!frame->loader().willLoadMediaElementURL(url)) {
mediaLoadingFailed(MediaPlayer::FormatError);
return;
}
// The resource fetch algorithm
m_networkState = NETWORK_LOADING;
// If the url should be loaded from the application cache, pass the url of the cached file
// to the media engine.
ApplicationCacheHost* cacheHost = frame->loader().documentLoader()->applicationCacheHost();
ApplicationCacheResource* resource = 0;
if (cacheHost && cacheHost->shouldLoadResourceFromApplicationCache(ResourceRequest(url), resource)) {
// Resources that are not present in the manifest will always fail to load (at least, after the
// cache has been primed the first time), making the testing of offline applications simpler.
if (!resource || resource->path().isEmpty()) {
mediaLoadingFailed(MediaPlayer::NetworkError);
return;
}
}
// Set m_currentSrc *before* changing to the cache url, the fact that we are loading from the app
// cache is an internal detail not exposed through the media element API.
m_currentSrc = url;
if (resource) {
url = createFileURLForApplicationCacheResource(resource->path());
LOG(Media, "HTMLMediaElement::loadResource(%p) - will load from app cache -> %s", this, urlForLoggingMedia(url).utf8().data());
}
LOG(Media, "HTMLMediaElement::loadResource(%p) - m_currentSrc -> %s", this, urlForLoggingMedia(m_currentSrc).utf8().data());
#if ENABLE(MEDIA_STREAM)
if (MediaStreamRegistry::registry().lookup(url.string()))
m_mediaSession->removeBehaviorRestriction(HTMLMediaSession::RequireUserGestureForRateChange);
#endif
if (m_sendProgressEvents)
startProgressEventTimer();
bool privateMode = document().page() && document().page()->usesEphemeralSession();
m_player->setPrivateBrowsingMode(privateMode);
// Reset display mode to force a recalculation of what to show because we are resetting the player.
setDisplayMode(Unknown);
if (!autoplay())
m_player->setPreload(m_mediaSession->effectivePreloadForElement(*this));
m_player->setPreservesPitch(m_webkitPreservesPitch);
if (!m_explicitlyMuted) {
m_explicitlyMuted = true;
m_muted = fastHasAttribute(mutedAttr);
}
updateVolume();
#if ENABLE(MEDIA_SOURCE)
ASSERT(!m_mediaSource);
if (url.protocolIs(mediaSourceBlobProtocol))
m_mediaSource = MediaSource::lookup(url.string());
if (m_mediaSource) {
if (m_mediaSource->attachToElement(this))
m_player->load(url, contentType, m_mediaSource.get());
else {
// Forget our reference to the MediaSource, so we leave it alone
// while processing remainder of load failure.
m_mediaSource = 0;
mediaLoadingFailed(MediaPlayer::FormatError);
}
} else
#endif
if (!m_player->load(url, contentType, keySystem))
mediaLoadingFailed(MediaPlayer::FormatError);
m_mediaSession->applyMediaPlayerRestrictions(*this);
// If there is no poster to display, allow the media engine to render video frames as soon as
// they are available.
updateDisplayState();
if (renderer())
renderer()->updateFromElement();
}
#if ENABLE(VIDEO_TRACK)
static bool trackIndexCompare(TextTrack* a,
TextTrack* b)
{
return a->trackIndex() - b->trackIndex() < 0;
}
static bool eventTimeCueCompare(const std::pair<MediaTime, TextTrackCue*>& a, const std::pair<MediaTime, TextTrackCue*>& b)
{
// 12 - Sort the tasks in events in ascending time order (tasks with earlier
// times first).
if (a.first != b.first)
return a.first - b.first < MediaTime::zeroTime();
// If the cues belong to different text tracks, it doesn't make sense to
// compare the two tracks by the relative cue order, so return the relative
// track order.
if (a.second->track() != b.second->track())
return trackIndexCompare(a.second->track(), b.second->track());
// 12 - Further sort tasks in events that have the same time by the
// relative text track cue order of the text track cues associated
// with these tasks.
return a.second->cueIndex() - b.second->cueIndex() < 0;
}
static bool compareCueInterval(const CueInterval& one, const CueInterval& two)
{
return one.data()->isOrderedBefore(two.data());
};
void HTMLMediaElement::updateActiveTextTrackCues(const MediaTime& movieTime)
{
// 4.8.10.8 Playing the media resource
// If the current playback position changes while the steps are running,
// then the user agent must wait for the steps to complete, and then must
// immediately rerun the steps.
if (ignoreTrackDisplayUpdateRequests())
return;
LOG(Media, "HTMLMediaElement::updateActiveTextTracks(%p)", this);
// 1 - Let current cues be a list of cues, initialized to contain all the
// cues of all the hidden, showing, or showing by default text tracks of the
// media element (not the disabled ones) whose start times are less than or
// equal to the current playback position and whose end times are greater
// than the current playback position.
CueList currentCues;
// The user agent must synchronously unset [the text track cue active] flag
// whenever ... the media element's readyState is changed back to HAVE_NOTHING.
if (m_readyState != HAVE_NOTHING && m_player) {
currentCues = m_cueTree.allOverlaps(m_cueTree.createInterval(movieTime, movieTime));
if (currentCues.size() > 1)
std::sort(currentCues.begin(), currentCues.end(), &compareCueInterval);
}
CueList previousCues;
CueList missedCues;
// 2 - Let other cues be a list of cues, initialized to contain all the cues
// of hidden, showing, and showing by default text tracks of the media
// element that are not present in current cues.
previousCues = m_currentlyActiveCues;
// 3 - Let last time be the current playback position at the time this
// algorithm was last run for this media element, if this is not the first
// time it has run.
MediaTime lastTime = m_lastTextTrackUpdateTime;
// 4 - If the current playback position has, since the last time this
// algorithm was run, only changed through its usual monotonic increase
// during normal playback, then let missed cues be the list of cues in other
// cues whose start times are greater than or equal to last time and whose
// end times are less than or equal to the current playback position.
// Otherwise, let missed cues be an empty list.
if (lastTime >= MediaTime::zeroTime() && m_lastSeekTime < movieTime) {
CueList potentiallySkippedCues =
m_cueTree.allOverlaps(m_cueTree.createInterval(lastTime, movieTime));
for (size_t i = 0; i < potentiallySkippedCues.size(); ++i) {
MediaTime cueStartTime = potentiallySkippedCues[i].low();
MediaTime cueEndTime = potentiallySkippedCues[i].high();
// Consider cues that may have been missed since the last seek time.
if (cueStartTime > std::max(m_lastSeekTime, lastTime) && cueEndTime < movieTime)
missedCues.append(potentiallySkippedCues[i]);
}
}
m_lastTextTrackUpdateTime = movieTime;
// 5 - If the time was reached through the usual monotonic increase of the
// current playback position during normal playback, and if the user agent
// has not fired a timeupdate event at the element in the past 15 to 250ms
// and is not still running event handlers for such an event, then the user
// agent must queue a task to fire a simple event named timeupdate at the
// element. (In the other cases, such as explicit seeks, relevant events get
// fired as part of the overall process of changing the current playback
// position.)
if (!m_paused && m_lastSeekTime <= lastTime)
scheduleTimeupdateEvent(false);
// Explicitly cache vector sizes, as their content is constant from here.
size_t currentCuesSize = currentCues.size();
size_t missedCuesSize = missedCues.size();
size_t previousCuesSize = previousCues.size();
// 6 - If all of the cues in current cues have their text track cue active
// flag set, none of the cues in other cues have their text track cue active
// flag set, and missed cues is empty, then abort these steps.
bool activeSetChanged = missedCuesSize;
for (size_t i = 0; !activeSetChanged && i < previousCuesSize; ++i)
if (!currentCues.contains(previousCues[i]) && previousCues[i].data()->isActive())
activeSetChanged = true;
for (size_t i = 0; i < currentCuesSize; ++i) {
TextTrackCue* cue = currentCues[i].data();
if (cue->isRenderable())
toVTTCue(cue)->updateDisplayTree(movieTime);
if (!cue->isActive())
activeSetChanged = true;
}
if (!activeSetChanged)
return;
// 7 - If the time was reached through the usual monotonic increase of the
// current playback position during normal playback, and there are cues in
// other cues that have their text track cue pause-on-exi flag set and that
// either have their text track cue active flag set or are also in missed
// cues, then immediately pause the media element.
for (size_t i = 0; !m_paused && i < previousCuesSize; ++i) {
if (previousCues[i].data()->pauseOnExit()
&& previousCues[i].data()->isActive()
&& !currentCues.contains(previousCues[i]))
pause();
}
for (size_t i = 0; !m_paused && i < missedCuesSize; ++i) {
if (missedCues[i].data()->pauseOnExit())
pause();
}
// 8 - Let events be a list of tasks, initially empty. Each task in this
// list will be associated with a text track, a text track cue, and a time,
// which are used to sort the list before the tasks are queued.
Vector<std::pair<MediaTime, TextTrackCue*>> eventTasks;
// 8 - Let affected tracks be a list of text tracks, initially empty.
Vector<TextTrack*> affectedTracks;
for (size_t i = 0; i < missedCuesSize; ++i) {
// 9 - For each text track cue in missed cues, prepare an event named enter
// for the TextTrackCue object with the text track cue start time.
eventTasks.append(std::make_pair(missedCues[i].data()->startMediaTime(),
missedCues[i].data()));
// 10 - For each text track [...] in missed cues, prepare an event
// named exit for the TextTrackCue object with the with the later of
// the text track cue end time and the text track cue start time.
// Note: An explicit task is added only if the cue is NOT a zero or
// negative length cue. Otherwise, the need for an exit event is
// checked when these tasks are actually queued below. This doesn't
// affect sorting events before dispatch either, because the exit
// event has the same time as the enter event.
if (missedCues[i].data()->startMediaTime() < missedCues[i].data()->endMediaTime())
eventTasks.append(std::make_pair(missedCues[i].data()->endMediaTime(), missedCues[i].data()));
}
for (size_t i = 0; i < previousCuesSize; ++i) {
// 10 - For each text track cue in other cues that has its text
// track cue active flag set prepare an event named exit for the
// TextTrackCue object with the text track cue end time.
if (!currentCues.contains(previousCues[i]))
eventTasks.append(std::make_pair(previousCues[i].data()->endMediaTime(),
previousCues[i].data()));
}
for (size_t i = 0; i < currentCuesSize; ++i) {
// 11 - For each text track cue in current cues that does not have its
// text track cue active flag set, prepare an event named enter for the
// TextTrackCue object with the text track cue start time.
if (!previousCues.contains(currentCues[i]))
eventTasks.append(std::make_pair(currentCues[i].data()->startMediaTime(),
currentCues[i].data()));
}
// 12 - Sort the tasks in events in ascending time order (tasks with earlier
// times first).
std::sort(eventTasks.begin(), eventTasks.end(), eventTimeCueCompare);
for (size_t i = 0; i < eventTasks.size(); ++i) {
if (!affectedTracks.contains(eventTasks[i].second->track()))
affectedTracks.append(eventTasks[i].second->track());
// 13 - Queue each task in events, in list order.
RefPtr<Event> event;
// Each event in eventTasks may be either an enterEvent or an exitEvent,
// depending on the time that is associated with the event. This
// correctly identifies the type of the event, if the startTime is
// less than the endTime in the cue.
if (eventTasks[i].second->startTime() >= eventTasks[i].second->endTime()) {
event = Event::create(eventNames().enterEvent, false, false);
event->setTarget(eventTasks[i].second);
m_asyncEventQueue.enqueueEvent(event.release());
event = Event::create(eventNames().exitEvent, false, false);
event->setTarget(eventTasks[i].second);
m_asyncEventQueue.enqueueEvent(event.release());
} else {
if (eventTasks[i].first == eventTasks[i].second->startMediaTime())
event = Event::create(eventNames().enterEvent, false, false);
else
event = Event::create(eventNames().exitEvent, false, false);
event->setTarget(eventTasks[i].second);
m_asyncEventQueue.enqueueEvent(event.release());
}
}
// 14 - Sort affected tracks in the same order as the text tracks appear in
// the media element's list of text tracks, and remove duplicates.
std::sort(affectedTracks.begin(), affectedTracks.end(), trackIndexCompare);
// 15 - For each text track in affected tracks, in the list order, queue a
// task to fire a simple event named cuechange at the TextTrack object, and, ...
for (size_t i = 0; i < affectedTracks.size(); ++i) {
RefPtr<Event> event = Event::create(eventNames().cuechangeEvent, false, false);
event->setTarget(affectedTracks[i]);
m_asyncEventQueue.enqueueEvent(event.release());
// ... if the text track has a corresponding track element, to then fire a
// simple event named cuechange at the track element as well.
if (affectedTracks[i]->trackType() == TextTrack::TrackElement) {
RefPtr<Event> event = Event::create(eventNames().cuechangeEvent, false, false);
HTMLTrackElement* trackElement = static_cast<LoadableTextTrack*>(affectedTracks[i])->trackElement();
ASSERT(trackElement);
event->setTarget(trackElement);
m_asyncEventQueue.enqueueEvent(event.release());
}
}
// 16 - Set the text track cue active flag of all the cues in the current
// cues, and unset the text track cue active flag of all the cues in the
// other cues.
for (size_t i = 0; i < currentCuesSize; ++i)
currentCues[i].data()->setIsActive(true);
for (size_t i = 0; i < previousCuesSize; ++i)
if (!currentCues.contains(previousCues[i]))
previousCues[i].data()->setIsActive(false);
// Update the current active cues.
m_currentlyActiveCues = currentCues;
if (activeSetChanged)
updateTextTrackDisplay();
}
bool HTMLMediaElement::textTracksAreReady() const
{
// 4.8.10.12.1 Text track model
// ...
// The text tracks of a media element are ready if all the text tracks whose mode was not
// in the disabled state when the element's resource selection algorithm last started now
// have a text track readiness state of loaded or failed to load.
for (unsigned i = 0; i < m_textTracksWhenResourceSelectionBegan.size(); ++i) {
if (m_textTracksWhenResourceSelectionBegan[i]->readinessState() == TextTrack::Loading
|| m_textTracksWhenResourceSelectionBegan[i]->readinessState() == TextTrack::NotLoaded)
return false;
}
return true;
}
void HTMLMediaElement::textTrackReadyStateChanged(TextTrack* track)
{
if (m_player && m_textTracksWhenResourceSelectionBegan.contains(track)) {
if (track->readinessState() != TextTrack::Loading)
setReadyState(m_player->readyState());
} else {
// The track readiness state might have changed as a result of the user
// clicking the captions button. In this case, a check whether all the
// resources have failed loading should be done in order to hide the CC button.
if (hasMediaControls() && track->readinessState() == TextTrack::FailedToLoad)
mediaControls()->refreshClosedCaptionsButtonVisibility();
}
}
void HTMLMediaElement::audioTrackEnabledChanged(AudioTrack* track)
{
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return;
if (m_audioTracks && m_audioTracks->contains(track))
m_audioTracks->scheduleChangeEvent();
}
void HTMLMediaElement::textTrackModeChanged(TextTrack* track)
{
bool trackIsLoaded = true;
if (track->trackType() == TextTrack::TrackElement) {
trackIsLoaded = false;
for (auto& trackElement : childrenOfType<HTMLTrackElement>(*this)) {
if (trackElement.track() == track) {
if (trackElement.readyState() == HTMLTrackElement::LOADING || trackElement.readyState() == HTMLTrackElement::LOADED)
trackIsLoaded = true;
break;
}
}
}
// If this is the first added track, create the list of text tracks.
if (!m_textTracks)
m_textTracks = TextTrackList::create(this, ActiveDOMObject::scriptExecutionContext());
// Mark this track as "configured" so configureTextTracks won't change the mode again.
track->setHasBeenConfigured(true);
if (track->mode() != TextTrack::disabledKeyword() && trackIsLoaded)
textTrackAddCues(track, track->cues());
#if USE(PLATFORM_TEXT_TRACK_MENU)
if (platformTextTrackMenu())
platformTextTrackMenu()->trackWasSelected(track->platformTextTrack());
#endif
configureTextTrackDisplay(AssumeTextTrackVisibilityChanged);
if (m_textTracks && m_textTracks->contains(track))
m_textTracks->scheduleChangeEvent();
#if ENABLE(AVF_CAPTIONS)
if (track->trackType() == TextTrack::TrackElement && m_player)
m_player->notifyTrackModeChanged();
#endif
}
void HTMLMediaElement::videoTrackSelectedChanged(VideoTrack* track)
{
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return;
if (m_videoTracks && m_videoTracks->contains(track))
m_videoTracks->scheduleChangeEvent();
}
void HTMLMediaElement::textTrackKindChanged(TextTrack* track)
{
if (track->kind() != TextTrack::captionsKeyword() && track->kind() != TextTrack::subtitlesKeyword() && track->mode() == TextTrack::showingKeyword())
track->setMode(TextTrack::hiddenKeyword());
}
void HTMLMediaElement::beginIgnoringTrackDisplayUpdateRequests()
{
++m_ignoreTrackDisplayUpdate;
}
void HTMLMediaElement::endIgnoringTrackDisplayUpdateRequests()
{
ASSERT(m_ignoreTrackDisplayUpdate);
--m_ignoreTrackDisplayUpdate;
if (!m_ignoreTrackDisplayUpdate && m_inActiveDocument)
updateActiveTextTrackCues(currentMediaTime());
}
void HTMLMediaElement::textTrackAddCues(TextTrack* track, const TextTrackCueList* cues)
{
if (track->mode() == TextTrack::disabledKeyword())
return;
TrackDisplayUpdateScope scope(this);
for (size_t i = 0; i < cues->length(); ++i)
textTrackAddCue(track, cues->item(i));
}
void HTMLMediaElement::textTrackRemoveCues(TextTrack*, const TextTrackCueList* cues)
{
TrackDisplayUpdateScope scope(this);
for (size_t i = 0; i < cues->length(); ++i)
textTrackRemoveCue(cues->item(i)->track(), cues->item(i));
}
void HTMLMediaElement::textTrackAddCue(TextTrack* track, PassRefPtr<TextTrackCue> prpCue)
{
if (track->mode() == TextTrack::disabledKeyword())
return;
RefPtr<TextTrackCue> cue = prpCue;
// Negative duration cues need be treated in the interval tree as
// zero-length cues.
MediaTime endTime = std::max(cue->startMediaTime(), cue->endMediaTime());
CueInterval interval = m_cueTree.createInterval(cue->startMediaTime(), endTime, cue.get());
if (!m_cueTree.contains(interval))
m_cueTree.add(interval);
updateActiveTextTrackCues(currentMediaTime());
}
void HTMLMediaElement::textTrackRemoveCue(TextTrack*, PassRefPtr<TextTrackCue> prpCue)
{
RefPtr<TextTrackCue> cue = prpCue;
// Negative duration cues need to be treated in the interval tree as
// zero-length cues.
MediaTime endTime = std::max(cue->startMediaTime(), cue->endMediaTime());
CueInterval interval = m_cueTree.createInterval(cue->startMediaTime(), endTime, cue.get());
m_cueTree.remove(interval);
#if ENABLE(WEBVTT_REGIONS)
// Since the cue will be removed from the media element and likely the
// TextTrack might also be destructed, notifying the region of the cue
// removal shouldn't be done.
if (cue->isRenderable())
toVTTCue(cue.get())->notifyRegionWhenRemovingDisplayTree(false);
#endif
size_t index = m_currentlyActiveCues.find(interval);
if (index != notFound) {
cue->setIsActive(false);
m_currentlyActiveCues.remove(index);
}
if (cue->isRenderable())
toVTTCue(cue.get())->removeDisplayTree();
updateActiveTextTrackCues(currentMediaTime());
#if ENABLE(WEBVTT_REGIONS)
if (cue->isRenderable())
toVTTCue(cue.get())->notifyRegionWhenRemovingDisplayTree(true);
#endif
}
#endif
bool HTMLMediaElement::isSafeToLoadURL(const URL& url, InvalidURLAction actionIfInvalid)
{
if (!url.isValid()) {
LOG(Media, "HTMLMediaElement::isSafeToLoadURL(%p) - %s -> FALSE because url is invalid", this, urlForLoggingMedia(url).utf8().data());
return false;
}
Frame* frame = document().frame();
if (!frame || !document().securityOrigin()->canDisplay(url)) {
if (actionIfInvalid == Complain)
FrameLoader::reportLocalLoadFailed(frame, url.stringCenterEllipsizedToLength());
LOG(Media, "HTMLMediaElement::isSafeToLoadURL(%p) - %s -> FALSE rejected by SecurityOrigin", this, urlForLoggingMedia(url).utf8().data());
return false;
}
if (!document().contentSecurityPolicy()->allowMediaFromSource(url)) {
LOG(Media, "HTMLMediaElement::isSafeToLoadURL(%p) - %s -> rejected by Content Security Policy", this, urlForLoggingMedia(url).utf8().data());
return false;
}
return true;
}
void HTMLMediaElement::startProgressEventTimer()
{
if (m_progressEventTimer.isActive())
return;
m_previousProgressTime = monotonicallyIncreasingTime();
// 350ms is not magic, it is in the spec!
m_progressEventTimer.startRepeating(0.350);
}
void HTMLMediaElement::waitForSourceChange()
{
LOG(Media, "HTMLMediaElement::waitForSourceChange(%p)", this);
stopPeriodicTimers();
m_loadState = WaitingForSource;
// 6.17 - Waiting: Set the element's networkState attribute to the NETWORK_NO_SOURCE value
m_networkState = NETWORK_NO_SOURCE;
// 6.18 - Set the element's delaying-the-load-event flag to false. This stops delaying the load event.
setShouldDelayLoadEvent(false);
updateDisplayState();
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::noneSupported()
{
LOG(Media, "HTMLMediaElement::noneSupported(%p)", this);
stopPeriodicTimers();
m_loadState = WaitingForSource;
m_currentSourceNode = 0;
// 4.8.10.5
// 6 - Reaching this step indicates that the media resource failed to load or that the given
// URL could not be resolved. In one atomic operation, run the following steps:
// 6.1 - Set the error attribute to a new MediaError object whose code attribute is set to
// MEDIA_ERR_SRC_NOT_SUPPORTED.
m_error = MediaError::create(MediaError::MEDIA_ERR_SRC_NOT_SUPPORTED);
// 6.2 - Forget the media element's media-resource-specific text tracks.
forgetResourceSpecificTracks();
// 6.3 - Set the element's networkState attribute to the NETWORK_NO_SOURCE value.
m_networkState = NETWORK_NO_SOURCE;
// 7 - Queue a task to fire a simple event named error at the media element.
scheduleEvent(eventNames().errorEvent);
#if ENABLE(MEDIA_SOURCE)
closeMediaSource();
#endif
// 8 - Set the element's delaying-the-load-event flag to false. This stops delaying the load event.
setShouldDelayLoadEvent(false);
// 9 - Abort these steps. Until the load() method is invoked or the src attribute is changed,
// the element won't attempt to load another resource.
updateDisplayState();
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::mediaLoadingFailedFatally(MediaPlayer::NetworkState error)
{
LOG(Media, "HTMLMediaElement::mediaLoadingFailedFatally(%p) - error = %d", this, static_cast<int>(error));
// 1 - The user agent should cancel the fetching process.
stopPeriodicTimers();
m_loadState = WaitingForSource;
// 2 - Set the error attribute to a new MediaError object whose code attribute is
// set to MEDIA_ERR_NETWORK/MEDIA_ERR_DECODE.
if (error == MediaPlayer::NetworkError)
m_error = MediaError::create(MediaError::MEDIA_ERR_NETWORK);
else if (error == MediaPlayer::DecodeError)
m_error = MediaError::create(MediaError::MEDIA_ERR_DECODE);
else
ASSERT_NOT_REACHED();
// 3 - Queue a task to fire a simple event named error at the media element.
scheduleEvent(eventNames().errorEvent);
#if ENABLE(MEDIA_SOURCE)
closeMediaSource();
#endif
// 4 - Set the element's networkState attribute to the NETWORK_EMPTY value and queue a
// task to fire a simple event called emptied at the element.
m_networkState = NETWORK_EMPTY;
scheduleEvent(eventNames().emptiedEvent);
// 5 - Set the element's delaying-the-load-event flag to false. This stops delaying the load event.
setShouldDelayLoadEvent(false);
// 6 - Abort the overall resource selection algorithm.
m_currentSourceNode = 0;
#if PLATFORM(COCOA)
if (document().isMediaDocument())
toMediaDocument(document()).mediaElementSawUnsupportedTracks();
#endif
}
void HTMLMediaElement::cancelPendingEventsAndCallbacks()
{
LOG(Media, "HTMLMediaElement::cancelPendingEventsAndCallbacks(%p)", this);
m_asyncEventQueue.cancelAllEvents();
for (auto& source : childrenOfType<HTMLSourceElement>(*this))
source.cancelPendingErrorEvent();
}
void HTMLMediaElement::mediaPlayerNetworkStateChanged(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
setNetworkState(m_player->networkState());
endProcessingMediaPlayerCallback();
}
static void logMediaLoadRequest(Page* page, const String& mediaEngine, const String& errorMessage, bool succeeded)
{
if (!page || !page->settings().diagnosticLoggingEnabled())
return;
ChromeClient& chromeClient = page->chrome().client();
if (!succeeded) {
chromeClient.logDiagnosticMessage(DiagnosticLoggingKeys::mediaLoadingFailedKey(), errorMessage, DiagnosticLoggingKeys::failKey());
return;
}
chromeClient.logDiagnosticMessage(DiagnosticLoggingKeys::mediaLoadedKey(), mediaEngine, DiagnosticLoggingKeys::noopKey());
if (!page->hasSeenAnyMediaEngine())
chromeClient.logDiagnosticMessage(DiagnosticLoggingKeys::pageContainsAtLeastOneMediaEngineKey(), emptyString(), DiagnosticLoggingKeys::noopKey());
if (!page->hasSeenMediaEngine(mediaEngine))
chromeClient.logDiagnosticMessage(DiagnosticLoggingKeys::pageContainsMediaEngineKey(), mediaEngine, DiagnosticLoggingKeys::noopKey());
page->sawMediaEngine(mediaEngine);
}
static String stringForNetworkState(MediaPlayer::NetworkState state)
{
switch (state) {
case MediaPlayer::Empty: return ASCIILiteral("Empty");
case MediaPlayer::Idle: return ASCIILiteral("Idle");
case MediaPlayer::Loading: return ASCIILiteral("Loading");
case MediaPlayer::Loaded: return ASCIILiteral("Loaded");
case MediaPlayer::FormatError: return ASCIILiteral("FormatError");
case MediaPlayer::NetworkError: return ASCIILiteral("NetworkError");
case MediaPlayer::DecodeError: return ASCIILiteral("DecodeError");
default: return emptyString();
}
}
void HTMLMediaElement::mediaLoadingFailed(MediaPlayer::NetworkState error)
{
stopPeriodicTimers();
// If we failed while trying to load a <source> element, the movie was never parsed, and there are more
// <source> children, schedule the next one
if (m_readyState < HAVE_METADATA && m_loadState == LoadingFromSourceElement) {
// resource selection algorithm
// Step 9.Otherwise.9 - Failed with elements: Queue a task, using the DOM manipulation task source, to fire a simple event named error at the candidate element.
if (m_currentSourceNode)
m_currentSourceNode->scheduleErrorEvent();
else
LOG(Media, "HTMLMediaElement::setNetworkState(%p) - error event not sent, <source> was removed", this);
// 9.Otherwise.10 - Asynchronously await a stable state. The synchronous section consists of all the remaining steps of this algorithm until the algorithm says the synchronous section has ended.
// 9.Otherwise.11 - Forget the media element's media-resource-specific tracks.
forgetResourceSpecificTracks();
if (havePotentialSourceChild()) {
LOG(Media, "HTMLMediaElement::setNetworkState(%p) - scheduling next <source>", this);
scheduleNextSourceChild();
} else {
LOG(Media, "HTMLMediaElement::setNetworkState(%p) - no more <source> elements, waiting", this);
waitForSourceChange();
}
return;
}
if ((error == MediaPlayer::NetworkError && m_readyState >= HAVE_METADATA) || error == MediaPlayer::DecodeError)
mediaLoadingFailedFatally(error);
else if ((error == MediaPlayer::FormatError || error == MediaPlayer::NetworkError) && m_loadState == LoadingFromSrcAttr)
noneSupported();
updateDisplayState();
if (hasMediaControls()) {
mediaControls()->reset();
mediaControls()->reportedError();
}
logMediaLoadRequest(document().page(), String(), stringForNetworkState(error), false);
}
void HTMLMediaElement::setNetworkState(MediaPlayer::NetworkState state)
{
LOG(Media, "HTMLMediaElement::setNetworkState(%p) - new state = %d, current state = %d", this, static_cast<int>(state), static_cast<int>(m_networkState));
if (state == MediaPlayer::Empty) {
// Just update the cached state and leave, we can't do anything.
m_networkState = NETWORK_EMPTY;
return;
}
if (state == MediaPlayer::FormatError || state == MediaPlayer::NetworkError || state == MediaPlayer::DecodeError) {
mediaLoadingFailed(state);
return;
}
if (state == MediaPlayer::Idle) {
if (m_networkState > NETWORK_IDLE) {
changeNetworkStateFromLoadingToIdle();
setShouldDelayLoadEvent(false);
} else {
m_networkState = NETWORK_IDLE;
}
}
if (state == MediaPlayer::Loading) {
if (m_networkState < NETWORK_LOADING || m_networkState == NETWORK_NO_SOURCE)
startProgressEventTimer();
m_networkState = NETWORK_LOADING;
}
if (state == MediaPlayer::Loaded) {
if (m_networkState != NETWORK_IDLE)
changeNetworkStateFromLoadingToIdle();
m_completelyLoaded = true;
}
if (hasMediaControls())
mediaControls()->updateStatusDisplay();
}
void HTMLMediaElement::changeNetworkStateFromLoadingToIdle()
{
m_progressEventTimer.stop();
if (hasMediaControls() && m_player->didLoadingProgress())
mediaControls()->bufferingProgressed();
// Schedule one last progress event so we guarantee that at least one is fired
// for files that load very quickly.
scheduleEvent(eventNames().progressEvent);
scheduleEvent(eventNames().suspendEvent);
m_networkState = NETWORK_IDLE;
}
void HTMLMediaElement::mediaPlayerReadyStateChanged(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
setReadyState(m_player->readyState());
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::setReadyState(MediaPlayer::ReadyState state)
{
LOG(Media, "HTMLMediaElement::setReadyState(%p) - new state = %d, current state = %d,", this, static_cast<int>(state), static_cast<int>(m_readyState));
// Set "wasPotentiallyPlaying" BEFORE updating m_readyState, potentiallyPlaying() uses it
bool wasPotentiallyPlaying = potentiallyPlaying();
ReadyState oldState = m_readyState;
ReadyState newState = static_cast<ReadyState>(state);
#if ENABLE(VIDEO_TRACK)
bool tracksAreReady = !RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled() || textTracksAreReady();
if (newState == oldState && m_tracksAreReady == tracksAreReady)
return;
m_tracksAreReady = tracksAreReady;
#else
if (newState == oldState)
return;
bool tracksAreReady = true;
#endif
if (tracksAreReady)
m_readyState = newState;
else {
// If a media file has text tracks the readyState may not progress beyond HAVE_FUTURE_DATA until
// the text tracks are ready, regardless of the state of the media file.
if (newState <= HAVE_METADATA)
m_readyState = newState;
else
m_readyState = HAVE_CURRENT_DATA;
}
if (oldState > m_readyStateMaximum)
m_readyStateMaximum = oldState;
if (m_networkState == NETWORK_EMPTY)
return;
if (m_seeking) {
// 4.8.10.9, step 11
if (wasPotentiallyPlaying && m_readyState < HAVE_FUTURE_DATA)
scheduleEvent(eventNames().waitingEvent);
// 4.8.10.10 step 14 & 15.
if (m_readyState >= HAVE_CURRENT_DATA)
finishSeek();
} else {
if (wasPotentiallyPlaying && m_readyState < HAVE_FUTURE_DATA) {
// 4.8.10.8
invalidateCachedTime();
scheduleTimeupdateEvent(false);
scheduleEvent(eventNames().waitingEvent);
}
}
if (m_readyState >= HAVE_METADATA && oldState < HAVE_METADATA) {
prepareMediaFragmentURI();
scheduleEvent(eventNames().durationchangeEvent);
scheduleEvent(eventNames().loadedmetadataEvent);
if (hasMediaControls())
mediaControls()->loadedMetadata();
if (renderer())
renderer()->updateFromElement();
logMediaLoadRequest(document().page(), m_player->engineDescription(), String(), true);
}
bool shouldUpdateDisplayState = false;
if (m_readyState >= HAVE_CURRENT_DATA && oldState < HAVE_CURRENT_DATA && !m_haveFiredLoadedData) {
m_haveFiredLoadedData = true;
shouldUpdateDisplayState = true;
scheduleEvent(eventNames().loadeddataEvent);
setShouldDelayLoadEvent(false);
applyMediaFragmentURI();
}
bool isPotentiallyPlaying = potentiallyPlaying();
if (m_readyState == HAVE_FUTURE_DATA && oldState <= HAVE_CURRENT_DATA && tracksAreReady) {
scheduleEvent(eventNames().canplayEvent);
if (isPotentiallyPlaying)
scheduleEvent(eventNames().playingEvent);
shouldUpdateDisplayState = true;
}
if (m_readyState == HAVE_ENOUGH_DATA && oldState < HAVE_ENOUGH_DATA && tracksAreReady) {
if (oldState <= HAVE_CURRENT_DATA)
scheduleEvent(eventNames().canplayEvent);
scheduleEvent(eventNames().canplaythroughEvent);
if (isPotentiallyPlaying && oldState <= HAVE_CURRENT_DATA)
scheduleEvent(eventNames().playingEvent);
if (m_autoplaying && m_paused && autoplay() && !document().isSandboxed(SandboxAutomaticFeatures) && m_mediaSession->playbackPermitted(*this)) {
m_paused = false;
invalidateCachedTime();
scheduleEvent(eventNames().playEvent);
scheduleEvent(eventNames().playingEvent);
}
shouldUpdateDisplayState = true;
}
if (shouldUpdateDisplayState) {
updateDisplayState();
if (hasMediaControls()) {
mediaControls()->refreshClosedCaptionsButtonVisibility();
mediaControls()->updateStatusDisplay();
}
}
updatePlayState();
updateMediaController();
#if ENABLE(VIDEO_TRACK)
if (RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
updateActiveTextTrackCues(currentMediaTime());
#endif
}
#if ENABLE(ENCRYPTED_MEDIA)
void HTMLMediaElement::mediaPlayerKeyAdded(MediaPlayer*, const String& keySystem, const String& sessionId)
{
MediaKeyEventInit initializer;
initializer.keySystem = keySystem;
initializer.sessionId = sessionId;
initializer.bubbles = false;
initializer.cancelable = false;
RefPtr<Event> event = MediaKeyEvent::create(eventNames().webkitkeyaddedEvent, initializer);
event->setTarget(this);
m_asyncEventQueue.enqueueEvent(event.release());
}
void HTMLMediaElement::mediaPlayerKeyError(MediaPlayer*, const String& keySystem, const String& sessionId, MediaPlayerClient::MediaKeyErrorCode errorCode, unsigned short systemCode)
{
MediaKeyError::Code mediaKeyErrorCode = MediaKeyError::MEDIA_KEYERR_UNKNOWN;
switch (errorCode) {
case MediaPlayerClient::UnknownError:
mediaKeyErrorCode = MediaKeyError::MEDIA_KEYERR_UNKNOWN;
break;
case MediaPlayerClient::ClientError:
mediaKeyErrorCode = MediaKeyError::MEDIA_KEYERR_CLIENT;
break;
case MediaPlayerClient::ServiceError:
mediaKeyErrorCode = MediaKeyError::MEDIA_KEYERR_SERVICE;
break;
case MediaPlayerClient::OutputError:
mediaKeyErrorCode = MediaKeyError::MEDIA_KEYERR_OUTPUT;
break;
case MediaPlayerClient::HardwareChangeError:
mediaKeyErrorCode = MediaKeyError::MEDIA_KEYERR_HARDWARECHANGE;
break;
case MediaPlayerClient::DomainError:
mediaKeyErrorCode = MediaKeyError::MEDIA_KEYERR_DOMAIN;
break;
}
MediaKeyEventInit initializer;
initializer.keySystem = keySystem;
initializer.sessionId = sessionId;
initializer.errorCode = MediaKeyError::create(mediaKeyErrorCode);
initializer.systemCode = systemCode;
initializer.bubbles = false;
initializer.cancelable = false;
RefPtr<Event> event = MediaKeyEvent::create(eventNames().webkitkeyerrorEvent, initializer);
event->setTarget(this);
m_asyncEventQueue.enqueueEvent(event.release());
}
void HTMLMediaElement::mediaPlayerKeyMessage(MediaPlayer*, const String& keySystem, const String& sessionId, const unsigned char* message, unsigned messageLength, const URL& defaultURL)
{
MediaKeyEventInit initializer;
initializer.keySystem = keySystem;
initializer.sessionId = sessionId;
initializer.message = Uint8Array::create(message, messageLength);
initializer.defaultURL = defaultURL;
initializer.bubbles = false;
initializer.cancelable = false;
RefPtr<Event> event = MediaKeyEvent::create(eventNames().webkitkeymessageEvent, initializer);
event->setTarget(this);
m_asyncEventQueue.enqueueEvent(event.release());
}
bool HTMLMediaElement::mediaPlayerKeyNeeded(MediaPlayer*, const String& keySystem, const String& sessionId, const unsigned char* initData, unsigned initDataLength)
{
if (!hasEventListeners(eventNames().webkitneedkeyEvent)) {
m_error = MediaError::create(MediaError::MEDIA_ERR_ENCRYPTED);
scheduleEvent(eventNames().errorEvent);
return false;
}
MediaKeyEventInit initializer;
initializer.keySystem = keySystem;
initializer.sessionId = sessionId;
initializer.initData = Uint8Array::create(initData, initDataLength);
initializer.bubbles = false;
initializer.cancelable = false;
RefPtr<Event> event = MediaKeyEvent::create(eventNames().webkitneedkeyEvent, initializer);
event->setTarget(this);
m_asyncEventQueue.enqueueEvent(event.release());
return true;
}
#endif
#if ENABLE(ENCRYPTED_MEDIA_V2)
bool HTMLMediaElement::mediaPlayerKeyNeeded(MediaPlayer*, Uint8Array* initData)
{
if (!hasEventListeners("webkitneedkey")) {
m_error = MediaError::create(MediaError::MEDIA_ERR_ENCRYPTED);
scheduleEvent(eventNames().errorEvent);
return false;
}
MediaKeyNeededEventInit initializer;
initializer.initData = initData;
initializer.bubbles = false;
initializer.cancelable = false;
RefPtr<Event> event = MediaKeyNeededEvent::create(eventNames().webkitneedkeyEvent, initializer);
event->setTarget(this);
m_asyncEventQueue.enqueueEvent(event.release());
return true;
}
void HTMLMediaElement::setMediaKeys(MediaKeys* mediaKeys)
{
if (m_mediaKeys == mediaKeys)
return;
if (m_mediaKeys)
m_mediaKeys->setMediaElement(0);
m_mediaKeys = mediaKeys;
if (m_mediaKeys)
m_mediaKeys->setMediaElement(this);
}
#endif
void HTMLMediaElement::progressEventTimerFired(Timer<HTMLMediaElement>&)
{
ASSERT(m_player);
if (m_networkState != NETWORK_LOADING)
return;
double time = monotonicallyIncreasingTime();
double timedelta = time - m_previousProgressTime;
if (m_player->didLoadingProgress()) {
scheduleEvent(eventNames().progressEvent);
m_previousProgressTime = time;
m_sentStalledEvent = false;
if (renderer())
renderer()->updateFromElement();
if (hasMediaControls())
mediaControls()->bufferingProgressed();
} else if (timedelta > 3.0 && !m_sentStalledEvent) {
scheduleEvent(eventNames().stalledEvent);
m_sentStalledEvent = true;
setShouldDelayLoadEvent(false);
}
}
void HTMLMediaElement::rewind(double timeDelta)
{
LOG(Media, "HTMLMediaElement::rewind(%p) - %f", this, timeDelta);
setCurrentTime(std::max(currentMediaTime() - MediaTime::createWithDouble(timeDelta), minTimeSeekable()));
}
void HTMLMediaElement::returnToRealtime()
{
LOG(Media, "HTMLMediaElement::returnToRealtime(%p)", this);
setCurrentTime(maxTimeSeekable());
}
void HTMLMediaElement::addPlayedRange(const MediaTime& start, const MediaTime& end)
{
LOG(Media, "HTMLMediaElement::addPlayedRange(%p) - [%s, %s]", this, toString(start).utf8().data(), toString(end).utf8().data());
if (!m_playedTimeRanges)
m_playedTimeRanges = TimeRanges::create();
m_playedTimeRanges->ranges().add(start, end);
}
bool HTMLMediaElement::supportsSave() const
{
return m_player ? m_player->supportsSave() : false;
}
bool HTMLMediaElement::supportsScanning() const
{
return m_player ? m_player->supportsScanning() : false;
}
void HTMLMediaElement::prepareToPlay()
{
LOG(Media, "HTMLMediaElement::prepareToPlay(%p)", this);
if (m_havePreparedToPlay)
return;
m_havePreparedToPlay = true;
m_player->prepareToPlay();
}
void HTMLMediaElement::fastSeek(double time)
{
fastSeek(MediaTime::createWithDouble(time));
}
void HTMLMediaElement::fastSeek(const MediaTime& time)
{
LOG(Media, "HTMLMediaElement::fastSeek(%p) - %s", this, toString(time).utf8().data());
// 4.7.10.9 Seeking
// 9. If the approximate-for-speed flag is set, adjust the new playback position to a value that will
// allow for playback to resume promptly. If new playback position before this step is before current
// playback position, then the adjusted new playback position must also be before the current playback
// position. Similarly, if the new playback position before this step is after current playback position,
// then the adjusted new playback position must also be after the current playback position.
refreshCachedTime();
MediaTime delta = time - currentMediaTime();
MediaTime negativeTolerance = delta >= MediaTime::zeroTime() ? delta : MediaTime::positiveInfiniteTime();
MediaTime positiveTolerance = delta < MediaTime::zeroTime() ? -delta : MediaTime::positiveInfiniteTime();
seekWithTolerance(time, negativeTolerance, positiveTolerance, true);
}
void HTMLMediaElement::seek(const MediaTime& time)
{
LOG(Media, "HTMLMediaElement::seek(%p) - %s", this, toString(time).utf8().data());
seekWithTolerance(time, MediaTime::zeroTime(), MediaTime::zeroTime(), true);
}
void HTMLMediaElement::seekInternal(const MediaTime& time)
{
LOG(Media, "HTMLMediaElement::seekInternal(%p) - %s", this, toString(time).utf8().data());
seekWithTolerance(time, MediaTime::zeroTime(), MediaTime::zeroTime(), false);
}
void HTMLMediaElement::seekWithTolerance(const MediaTime& inTime, const MediaTime& negativeTolerance, const MediaTime& positiveTolerance, bool fromDOM)
{
// 4.8.10.9 Seeking
MediaTime time = inTime;
// 1 - Set the media element's show poster flag to false.
setDisplayMode(Video);
// 2 - If the media element's readyState is HAVE_NOTHING, abort these steps.
if (m_readyState == HAVE_NOTHING || !m_player)
return;
// If the media engine has been told to postpone loading data, let it go ahead now.
if (m_preload < MediaPlayer::Auto && m_readyState < HAVE_FUTURE_DATA)
prepareToPlay();
// Get the current time before setting m_seeking, m_lastSeekTime is returned once it is set.
refreshCachedTime();
MediaTime now = currentMediaTime();
// 3 - If the element's seeking IDL attribute is true, then another instance of this algorithm is
// already running. Abort that other instance of the algorithm without waiting for the step that
// it is running to complete.
if (m_seeking) {
m_seekTimer.stop();
m_pendingSeek = nullptr;
}
// 4 - Set the seeking IDL attribute to true.
// The flag will be cleared when the engine tells us the time has actually changed.
m_seeking = true;
if (m_playing) {
if (m_lastSeekTime < now)
addPlayedRange(m_lastSeekTime, now);
}
m_lastSeekTime = time;
// 5 - If the seek was in response to a DOM method call or setting of an IDL attribute, then continue
// the script. The remainder of these steps must be run asynchronously.
m_pendingSeek = std::make_unique<PendingSeek>(now, time, negativeTolerance, positiveTolerance);
if (fromDOM)
m_seekTimer.startOneShot(0);
else
seekTimerFired(m_seekTimer);
}
void HTMLMediaElement::seekTimerFired(Timer<HTMLMediaElement>&)
{
if (!m_player) {
m_seeking = false;
return;
}
ASSERT(m_pendingSeek);
MediaTime now = m_pendingSeek->now;
MediaTime time = m_pendingSeek->targetTime;
MediaTime negativeTolerance = m_pendingSeek->negativeTolerance;
MediaTime positiveTolerance = m_pendingSeek->positiveTolerance;
m_pendingSeek = nullptr;
// 6 - If the new playback position is later than the end of the media resource, then let it be the end
// of the media resource instead.
time = std::min(time, durationMediaTime());
// 7 - If the new playback position is less than the earliest possible position, let it be that position instead.
MediaTime earliestTime = m_player->startTime();
time = std::max(time, earliestTime);
// Ask the media engine for the time value in the movie's time scale before comparing with current time. This
// is necessary because if the seek time is not equal to currentTime but the delta is less than the movie's
// time scale, we will ask the media engine to "seek" to the current movie time, which may be a noop and
// not generate a timechanged callback. This means m_seeking will never be cleared and we will never
// fire a 'seeked' event.
#if !LOG_DISABLED
MediaTime mediaTime = m_player->mediaTimeForTimeValue(time);
if (time != mediaTime)
LOG(Media, "HTMLMediaElement::seekTimerFired(%p) - %s - media timeline equivalent is %s", this, toString(time).utf8().data(), toString(mediaTime).utf8().data());
#endif
time = m_player->mediaTimeForTimeValue(time);
// 8 - If the (possibly now changed) new playback position is not in one of the ranges given in the
// seekable attribute, then let it be the position in one of the ranges given in the seekable attribute
// that is the nearest to the new playback position. ... If there are no ranges given in the seekable
// attribute then set the seeking IDL attribute to false and abort these steps.
RefPtr<TimeRanges> seekableRanges = seekable();
// Short circuit seeking to the current time by just firing the events if no seek is required.
// Don't skip calling the media engine if we are in poster mode because a seek should always
// cancel poster display.
bool noSeekRequired = !seekableRanges->length() || (time == now && displayMode() != Poster);
#if ENABLE(MEDIA_SOURCE)
// Always notify the media engine of a seek if the source is not closed. This ensures that the source is
// always in a flushed state when the 'seeking' event fires.
if (m_mediaSource && m_mediaSource->isClosed())
noSeekRequired = false;
#endif
if (noSeekRequired) {
if (time == now) {
scheduleEvent(eventNames().seekingEvent);
scheduleTimeupdateEvent(false);
scheduleEvent(eventNames().seekedEvent);
}
m_seeking = false;
return;
}
time = seekableRanges->ranges().nearest(time);
m_sentEndEvent = false;
m_lastSeekTime = time;
// 10 - Queue a task to fire a simple event named seeking at the element.
scheduleEvent(eventNames().seekingEvent);
// 11 - Set the current playback position to the given new playback position
m_player->seekWithTolerance(time, negativeTolerance, positiveTolerance);
// 12 - Wait until the user agent has established whether or not the media data for the new playback
// position is available, and, if it is, until it has decoded enough data to play back that position.
// 13 - Await a stable state. The synchronous section consists of all the remaining steps of this algorithm.
}
void HTMLMediaElement::finishSeek()
{
LOG(Media, "HTMLMediaElement::finishSeek(%p)", this);
// 4.8.10.9 Seeking
// 14 - Set the seeking IDL attribute to false.
m_seeking = false;
// 15 - Run the time maches on steps.
// Handled by mediaPlayerTimeChanged().
// 16 - Queue a task to fire a simple event named timeupdate at the element.
scheduleEvent(eventNames().timeupdateEvent);
// 17 - Queue a task to fire a simple event named seeked at the element.
scheduleEvent(eventNames().seekedEvent);
#if ENABLE(MEDIA_SOURCE)
if (m_mediaSource)
m_mediaSource->monitorSourceBuffers();
#endif
}
HTMLMediaElement::ReadyState HTMLMediaElement::readyState() const
{
return m_readyState;
}
MediaPlayer::MovieLoadType HTMLMediaElement::movieLoadType() const
{
return m_player ? m_player->movieLoadType() : MediaPlayer::Unknown;
}
bool HTMLMediaElement::hasAudio() const
{
return m_player ? m_player->hasAudio() : false;
}
bool HTMLMediaElement::seeking() const
{
return m_seeking;
}
void HTMLMediaElement::refreshCachedTime() const
{
m_cachedTime = m_player->currentTime();
if (!m_cachedTime) {
// Do not use m_cachedTime until the media engine returns a non-zero value because we can't
// estimate current time until playback actually begins.
invalidateCachedTime();
return;
}
m_clockTimeAtLastCachedTimeUpdate = monotonicallyIncreasingTime();
}
void HTMLMediaElement::invalidateCachedTime() const
{
#if !LOG_DISABLED
if (m_cachedTime.isValid())
LOG(Media, "HTMLMediaElement::invalidateCachedTime(%p)", this);
#endif
// Don't try to cache movie time when playback first starts as the time reported by the engine
// sometimes fluctuates for a short amount of time, so the cached time will be off if we take it
// too early.
static const double minimumTimePlayingBeforeCacheSnapshot = 0.5;
m_minimumClockTimeToUpdateCachedTime = monotonicallyIncreasingTime() + minimumTimePlayingBeforeCacheSnapshot;
m_cachedTime = MediaTime::invalidTime();
}
// playback state
double HTMLMediaElement::currentTime() const
{
return currentMediaTime().toDouble();
}
MediaTime HTMLMediaElement::currentMediaTime() const
{
#if LOG_CACHED_TIME_WARNINGS
static const MediaTime minCachedDeltaForWarning = MediaTime::create(1, 100);
#endif
if (!m_player)
return MediaTime::zeroTime();
if (m_seeking) {
LOG(Media, "HTMLMediaElement::currentTime(%p) - seeking, returning %s", this, toString(m_lastSeekTime).utf8().data());
return m_lastSeekTime;
}
if (m_cachedTime.isValid() && m_paused) {
#if LOG_CACHED_TIME_WARNINGS
MediaTime delta = m_cachedTime - m_player->currentTime();
if (delta > minCachedDeltaForWarning)
LOG(Media, "HTMLMediaElement::currentTime(%p) - WARNING, cached time is %s seconds off of media time when paused", this, toString(delta).utf8().data());
#endif
return m_cachedTime;
}
// Is it too soon use a cached time?
double now = monotonicallyIncreasingTime();
double maximumDurationToCacheMediaTime = m_player->maximumDurationToCacheMediaTime();
if (maximumDurationToCacheMediaTime && m_cachedTime.isValid() && !m_paused && now > m_minimumClockTimeToUpdateCachedTime) {
double clockDelta = now - m_clockTimeAtLastCachedTimeUpdate;
// Not too soon, use the cached time only if it hasn't expired.
if (clockDelta < maximumDurationToCacheMediaTime) {
MediaTime adjustedCacheTime = m_cachedTime + MediaTime::createWithDouble(effectivePlaybackRate() * clockDelta);
#if LOG_CACHED_TIME_WARNINGS
MediaTime delta = adjustedCacheTime - m_player->currentTime();
if (delta > minCachedDeltaForWarning)
LOG(Media, "HTMLMediaElement::currentTime(%p) - WARNING, cached time is %f seconds off of media time when playing", this, delta);
#endif
return adjustedCacheTime;
}
}
#if LOG_CACHED_TIME_WARNINGS
if (maximumDurationToCacheMediaTime && now > m_minimumClockTimeToUpdateCachedTime && m_cachedTime != MediaPlayer::invalidTime()) {
double clockDelta = now - m_clockTimeAtLastCachedTimeUpdate;
MediaTime delta = m_cachedTime + MediaTime::createWithDouble(effectivePlaybackRate() * clockDelta) - m_player->currentTime();
LOG(Media, "HTMLMediaElement::currentTime(%p) - cached time was %s seconds off of media time when it expired", this, toString(delta).utf8().data());
}
#endif
refreshCachedTime();
if (m_cachedTime.isInvalid())
return MediaTime::zeroTime();
return m_cachedTime;
}
void HTMLMediaElement::setCurrentTime(double time)
{
setCurrentTime(MediaTime::createWithDouble(time));
}
void HTMLMediaElement::setCurrentTime(const MediaTime& time)
{
if (m_mediaController)
return;
seekInternal(time);
}
void HTMLMediaElement::setCurrentTime(double time, ExceptionCode& ec)
{
// On setting, if the media element has a current media controller, then the user agent must
// throw an InvalidStateError exception
if (m_mediaController) {
ec = INVALID_STATE_ERR;
return;
}
seek(MediaTime::createWithDouble(time));
}
double HTMLMediaElement::duration() const
{
return durationMediaTime().toDouble();
}
MediaTime HTMLMediaElement::durationMediaTime() const
{
if (m_player && m_readyState >= HAVE_METADATA)
return m_player->duration();
return MediaTime::invalidTime();
}
bool HTMLMediaElement::paused() const
{
// As of this writing, JavaScript garbage collection calls this function directly. In the past
// we had problems where this was called on an object after a bad cast. The assertion below
// made our regression test detect the problem, so we should keep it because of that. But note
// that the value of the assertion relies on the compiler not being smart enough to know that
// isHTMLUnknownElement is guaranteed to return false for an HTMLMediaElement.
ASSERT(!isHTMLUnknownElement());
return m_paused;
}
double HTMLMediaElement::defaultPlaybackRate() const
{
return m_defaultPlaybackRate;
}
void HTMLMediaElement::setDefaultPlaybackRate(double rate)
{
if (m_defaultPlaybackRate != rate) {
m_defaultPlaybackRate = rate;
scheduleEvent(eventNames().ratechangeEvent);
}
}
double HTMLMediaElement::effectivePlaybackRate() const
{
return m_mediaController ? m_mediaController->playbackRate() : m_playbackRate;
}
double HTMLMediaElement::playbackRate() const
{
return m_playbackRate;
}
void HTMLMediaElement::setPlaybackRate(double rate)
{
LOG(Media, "HTMLMediaElement::setPlaybackRate(%p) - %f", this, rate);
if (m_player && potentiallyPlaying() && m_player->rate() != rate && !m_mediaController)
m_player->setRate(rate);
if (m_playbackRate != rate) {
m_playbackRate = rate;
invalidateCachedTime();
scheduleEvent(eventNames().ratechangeEvent);
}
}
void HTMLMediaElement::updatePlaybackRate()
{
double effectiveRate = effectivePlaybackRate();
if (m_player && potentiallyPlaying() && m_player->rate() != effectiveRate)
m_player->setRate(effectiveRate);
}
bool HTMLMediaElement::webkitPreservesPitch() const
{
return m_webkitPreservesPitch;
}
void HTMLMediaElement::setWebkitPreservesPitch(bool preservesPitch)
{
LOG(Media, "HTMLMediaElement::setWebkitPreservesPitch(%p) - %s", this, boolString(preservesPitch));
m_webkitPreservesPitch = preservesPitch;
if (!m_player)
return;
m_player->setPreservesPitch(preservesPitch);
}
bool HTMLMediaElement::ended() const
{
// 4.8.10.8 Playing the media resource
// The ended attribute must return true if the media element has ended
// playback and the direction of playback is forwards, and false otherwise.
return endedPlayback() && effectivePlaybackRate() > 0;
}
bool HTMLMediaElement::autoplay() const
{
#if PLATFORM(IOS)
// Unless the restriction on requiring user actions has been lifted, we do not
// allow playback to start just because the page has "autoplay". They are either
// lifted through Settings, or once the user explictly calls load() or play()
// because they have OK'ed us loading data. This allows playback to continue if
// the URL is changed while the movie is playing.
if (!m_mediaSession->playbackPermitted(*this) || !m_mediaSession->dataLoadingPermitted(*this))
return false;
#endif
return fastHasAttribute(autoplayAttr);
}
String HTMLMediaElement::preload() const
{
switch (m_preload) {
case MediaPlayer::None:
return ASCIILiteral("none");
case MediaPlayer::MetaData:
return ASCIILiteral("metadata");
case MediaPlayer::Auto:
return ASCIILiteral("auto");
}
ASSERT_NOT_REACHED();
return String();
}
void HTMLMediaElement::setPreload(const String& preload)
{
LOG(Media, "HTMLMediaElement::setPreload(%p) - %s", this, preload.utf8().data());
setAttribute(preloadAttr, preload);
}
void HTMLMediaElement::play()
{
LOG(Media, "HTMLMediaElement::play(%p)", this);
if (!m_mediaSession->playbackPermitted(*this))
return;
if (ScriptController::processingUserGesture())
removeBehaviorsRestrictionsAfterFirstUserGesture();
playInternal();
}
void HTMLMediaElement::playInternal()
{
LOG(Media, "HTMLMediaElement::playInternal(%p)", this);
if (!m_mediaSession->clientWillBeginPlayback()) {
LOG(Media, " returning because of interruption");
return;
}
// 4.8.10.9. Playing the media resource
if (!m_player || m_networkState == NETWORK_EMPTY)
scheduleDelayedAction(LoadMediaResource);
if (endedPlayback())
seekInternal(MediaTime::zeroTime());
if (m_mediaController)
m_mediaController->bringElementUpToSpeed(this);
if (m_paused) {
m_paused = false;
invalidateCachedTime();
scheduleEvent(eventNames().playEvent);
if (m_readyState <= HAVE_CURRENT_DATA)
scheduleEvent(eventNames().waitingEvent);
else if (m_readyState >= HAVE_FUTURE_DATA)
scheduleEvent(eventNames().playingEvent);
}
m_autoplaying = false;
updatePlayState();
updateMediaController();
}
void HTMLMediaElement::pause()
{
LOG(Media, "HTMLMediaElement::pause(%p)", this);
if (!m_mediaSession->playbackPermitted(*this))
return;
pauseInternal();
}
void HTMLMediaElement::pauseInternal()
{
LOG(Media, "HTMLMediaElement::pauseInternal(%p)", this);
if (!m_mediaSession->clientWillPausePlayback()) {
LOG(Media, " returning because of interruption");
return;
}
// 4.8.10.9. Playing the media resource
if (!m_player || m_networkState == NETWORK_EMPTY) {
#if PLATFORM(IOS)
// Unless the restriction on media requiring user action has been lifted
// don't trigger loading if a script calls pause().
if (!m_mediaSession->playbackPermitted(*this))
return;
#endif
scheduleDelayedAction(LoadMediaResource);
}
m_autoplaying = false;
if (!m_paused) {
m_paused = true;
scheduleTimeupdateEvent(false);
scheduleEvent(eventNames().pauseEvent);
}
updatePlayState();
}
#if ENABLE(MEDIA_SOURCE)
void HTMLMediaElement::closeMediaSource()
{
if (!m_mediaSource)
return;
m_mediaSource->close();
m_mediaSource = 0;
}
#endif
#if ENABLE(ENCRYPTED_MEDIA)
void HTMLMediaElement::webkitGenerateKeyRequest(const String& keySystem, PassRefPtr<Uint8Array> initData, ExceptionCode& ec)
{
#if ENABLE(ENCRYPTED_MEDIA_V2)
static bool firstTime = true;
if (firstTime && scriptExecutionContext()) {
scriptExecutionContext()->addConsoleMessage(MessageSource::JS, MessageLevel::Warning, ASCIILiteral("'HTMLMediaElement.webkitGenerateKeyRequest()' is deprecated. Use 'MediaKeys.createSession()' instead."));
firstTime = false;
}
#endif
if (keySystem.isEmpty()) {
ec = SYNTAX_ERR;
return;
}
if (!m_player) {
ec = INVALID_STATE_ERR;
return;
}
const unsigned char* initDataPointer = 0;
unsigned initDataLength = 0;
if (initData) {
initDataPointer = initData->data();
initDataLength = initData->length();
}
MediaPlayer::MediaKeyException result = m_player->generateKeyRequest(keySystem, initDataPointer, initDataLength);
ec = exceptionCodeForMediaKeyException(result);
}
void HTMLMediaElement::webkitGenerateKeyRequest(const String& keySystem, ExceptionCode& ec)
{
webkitGenerateKeyRequest(keySystem, Uint8Array::create(0), ec);
}
void HTMLMediaElement::webkitAddKey(const String& keySystem, PassRefPtr<Uint8Array> key, PassRefPtr<Uint8Array> initData, const String& sessionId, ExceptionCode& ec)
{
#if ENABLE(ENCRYPTED_MEDIA_V2)
static bool firstTime = true;
if (firstTime && scriptExecutionContext()) {
scriptExecutionContext()->addConsoleMessage(MessageSource::JS, MessageLevel::Warning, ASCIILiteral("'HTMLMediaElement.webkitAddKey()' is deprecated. Use 'MediaKeySession.update()' instead."));
firstTime = false;
}
#endif
if (keySystem.isEmpty()) {
ec = SYNTAX_ERR;
return;
}
if (!key) {
ec = SYNTAX_ERR;
return;
}
if (!key->length()) {
ec = TYPE_MISMATCH_ERR;
return;
}
if (!m_player) {
ec = INVALID_STATE_ERR;
return;
}
const unsigned char* initDataPointer = 0;
unsigned initDataLength = 0;
if (initData) {
initDataPointer = initData->data();
initDataLength = initData->length();
}
MediaPlayer::MediaKeyException result = m_player->addKey(keySystem, key->data(), key->length(), initDataPointer, initDataLength, sessionId);
ec = exceptionCodeForMediaKeyException(result);
}
void HTMLMediaElement::webkitAddKey(const String& keySystem, PassRefPtr<Uint8Array> key, ExceptionCode& ec)
{
webkitAddKey(keySystem, key, Uint8Array::create(0), String(), ec);
}
void HTMLMediaElement::webkitCancelKeyRequest(const String& keySystem, const String& sessionId, ExceptionCode& ec)
{
if (keySystem.isEmpty()) {
ec = SYNTAX_ERR;
return;
}
if (!m_player) {
ec = INVALID_STATE_ERR;
return;
}
MediaPlayer::MediaKeyException result = m_player->cancelKeyRequest(keySystem, sessionId);
ec = exceptionCodeForMediaKeyException(result);
}
#endif
bool HTMLMediaElement::loop() const
{
return fastHasAttribute(loopAttr);
}
void HTMLMediaElement::setLoop(bool b)
{
LOG(Media, "HTMLMediaElement::setLoop(%p) - %s", this, boolString(b));
setBooleanAttribute(loopAttr, b);
}
bool HTMLMediaElement::controls() const
{
Frame* frame = document().frame();
// always show controls when scripting is disabled
if (frame && !frame->script().canExecuteScripts(NotAboutToExecuteScript))
return true;
// always show controls for video when fullscreen playback is required.
if (isVideo() && m_mediaSession->requiresFullscreenForVideoPlayback(*this))
return true;
// Always show controls when in full screen mode.
if (isFullscreen())
return true;
return fastHasAttribute(controlsAttr);
}
void HTMLMediaElement::setControls(bool b)
{
LOG(Media, "HTMLMediaElement::setControls(%p) - %s", this, boolString(b));
setBooleanAttribute(controlsAttr, b);
}
double HTMLMediaElement::volume() const
{
return m_volume;
}
void HTMLMediaElement::setVolume(double vol, ExceptionCode& ec)
{
LOG(Media, "HTMLMediaElement::setVolume(%p) - %f", this, vol);
if (vol < 0.0f || vol > 1.0f) {
ec = INDEX_SIZE_ERR;
return;
}
#if !PLATFORM(IOS)
if (m_volume != vol) {
m_volume = vol;
m_volumeInitialized = true;
updateVolume();
scheduleEvent(eventNames().volumechangeEvent);
}
#endif
}
bool HTMLMediaElement::muted() const
{
return m_explicitlyMuted ? m_muted : fastHasAttribute(mutedAttr);
}
void HTMLMediaElement::setMuted(bool muted)
{
LOG(Media, "HTMLMediaElement::setMuted(%p) - %s", this, boolString(muted));
#if PLATFORM(IOS)
UNUSED_PARAM(muted);
#else
if (m_muted != muted || !m_explicitlyMuted) {
m_muted = muted;
m_explicitlyMuted = true;
// Avoid recursion when the player reports volume changes.
if (!processingMediaPlayerCallback()) {
if (m_player) {
m_player->setMuted(m_muted);
if (hasMediaControls())
mediaControls()->changedMute();
}
}
scheduleEvent(eventNames().volumechangeEvent);
}
#endif
}
void HTMLMediaElement::togglePlayState()
{
LOG(Media, "HTMLMediaElement::togglePlayState(%p) - canPlay() is %s", this, boolString(canPlay()));
// We can safely call the internal play/pause methods, which don't check restrictions, because
// this method is only called from the built-in media controller
if (canPlay()) {
updatePlaybackRate();
playInternal();
} else
pauseInternal();
}
void HTMLMediaElement::beginScrubbing()
{
LOG(Media, "HTMLMediaElement::beginScrubbing(%p) - paused() is %s", this, boolString(paused()));
if (!paused()) {
if (ended()) {
// Because a media element stays in non-paused state when it reaches end, playback resumes
// when the slider is dragged from the end to another position unless we pause first. Do
// a "hard pause" so an event is generated, since we want to stay paused after scrubbing finishes.
pause();
} else {
// Not at the end but we still want to pause playback so the media engine doesn't try to
// continue playing during scrubbing. Pause without generating an event as we will
// unpause after scrubbing finishes.
setPausedInternal(true);
}
}
}
void HTMLMediaElement::endScrubbing()
{
LOG(Media, "HTMLMediaElement::endScrubbing(%p) - m_pausedInternal is %s", this, boolString(m_pausedInternal));
if (m_pausedInternal)
setPausedInternal(false);
}
void HTMLMediaElement::beginScanning(ScanDirection direction)
{
m_scanType = supportsScanning() ? Scan : Seek;
m_scanDirection = direction;
if (m_scanType == Seek) {
// Scanning by seeking requires the video to be paused during scanning.
m_actionAfterScan = paused() ? Nothing : Play;
pause();
} else {
// Scanning by scanning requires the video to be playing during scanninging.
m_actionAfterScan = paused() ? Pause : Nothing;
play();
setPlaybackRate(nextScanRate());
}
m_scanTimer.start(0, m_scanType == Seek ? SeekRepeatDelay : ScanRepeatDelay);
}
void HTMLMediaElement::endScanning()
{
if (m_scanType == Scan)
setPlaybackRate(defaultPlaybackRate());
if (m_actionAfterScan == Play)
play();
else if (m_actionAfterScan == Pause)
pause();
if (m_scanTimer.isActive())
m_scanTimer.stop();
}
double HTMLMediaElement::nextScanRate()
{
double rate = std::min(ScanMaximumRate, fabs(playbackRate() * 2));
if (m_scanDirection == Backward)
rate *= -1;
#if PLATFORM(IOS)
rate = std::min(std::max(rate, minFastReverseRate()), maxFastForwardRate());
#endif
return rate;
}
void HTMLMediaElement::scanTimerFired(Timer<HTMLMediaElement>&)
{
if (m_scanType == Seek) {
double seekTime = m_scanDirection == Forward ? SeekTime : -SeekTime;
setCurrentTime(currentTime() + seekTime);
} else
setPlaybackRate(nextScanRate());
}
// The spec says to fire periodic timeupdate events (those sent while playing) every
// "15 to 250ms", we choose the slowest frequency
static const double maxTimeupdateEventFrequency = 0.25;
void HTMLMediaElement::startPlaybackProgressTimer()
{
if (m_playbackProgressTimer.isActive())
return;
m_previousProgressTime = monotonicallyIncreasingTime();
m_playbackProgressTimer.startRepeating(maxTimeupdateEventFrequency);
}
void HTMLMediaElement::playbackProgressTimerFired(Timer<HTMLMediaElement>&)
{
ASSERT(m_player);
if (m_fragmentEndTime.isValid() && currentMediaTime() >= m_fragmentEndTime && effectivePlaybackRate() > 0) {
m_fragmentEndTime = MediaTime::invalidTime();
if (!m_mediaController && !m_paused) {
// changes paused to true and fires a simple event named pause at the media element.
pauseInternal();
}
}
scheduleTimeupdateEvent(true);
if (!effectivePlaybackRate())
return;
if (!m_paused && hasMediaControls())
mediaControls()->playbackProgressed();
#if ENABLE(VIDEO_TRACK)
if (RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
updateActiveTextTrackCues(currentMediaTime());
#endif
#if ENABLE(MEDIA_SOURCE)
if (m_mediaSource)
m_mediaSource->monitorSourceBuffers();
#endif
}
void HTMLMediaElement::scheduleTimeupdateEvent(bool periodicEvent)
{
double now = monotonicallyIncreasingTime();
double timedelta = now - m_clockTimeAtLastUpdateEvent;
// throttle the periodic events
if (periodicEvent && timedelta < maxTimeupdateEventFrequency)
return;
// Some media engines make multiple "time changed" callbacks at the same time, but we only want one
// event at a given time so filter here
MediaTime movieTime = currentMediaTime();
if (movieTime != m_lastTimeUpdateEventMovieTime) {
scheduleEvent(eventNames().timeupdateEvent);
m_clockTimeAtLastUpdateEvent = now;
m_lastTimeUpdateEventMovieTime = movieTime;
}
}
bool HTMLMediaElement::canPlay() const
{
return paused() || ended() || m_readyState < HAVE_METADATA;
}
double HTMLMediaElement::percentLoaded() const
{
if (!m_player)
return 0;
MediaTime duration = m_player->duration();
if (!duration || duration.isPositiveInfinite() || duration.isNegativeInfinite())
return 0;
MediaTime buffered = MediaTime::zeroTime();
bool ignored;
std::unique_ptr<PlatformTimeRanges> timeRanges = m_player->buffered();
for (unsigned i = 0; i < timeRanges->length(); ++i) {
MediaTime start = timeRanges->start(i, ignored);
MediaTime end = timeRanges->end(i, ignored);
buffered += end - start;
}
return buffered.toDouble() / duration.toDouble();
}
#if ENABLE(VIDEO_TRACK)
void HTMLMediaElement::mediaPlayerDidAddAudioTrack(PassRefPtr<AudioTrackPrivate> prpTrack)
{
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return;
addAudioTrack(AudioTrack::create(this, prpTrack));
}
void HTMLMediaElement::mediaPlayerDidAddTextTrack(PassRefPtr<InbandTextTrackPrivate> prpTrack)
{
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return;
// 4.8.10.12.2 Sourcing in-band text tracks
// 1. Associate the relevant data with a new text track and its corresponding new TextTrack object.
RefPtr<InbandTextTrack> textTrack = InbandTextTrack::create(ActiveDOMObject::scriptExecutionContext(), this, prpTrack);
textTrack->setMediaElement(this);
// 2. Set the new text track's kind, label, and language based on the semantics of the relevant data,
// as defined by the relevant specification. If there is no label in that data, then the label must
// be set to the empty string.
// 3. Associate the text track list of cues with the rules for updating the text track rendering appropriate
// for the format in question.
// 4. If the new text track's kind is metadata, then set the text track in-band metadata track dispatch type
// as follows, based on the type of the media resource:
// 5. Populate the new text track's list of cues with the cues parsed so far, folllowing the guidelines for exposing
// cues, and begin updating it dynamically as necessary.
// - Thess are all done by the media engine.
// 6. Set the new text track's readiness state to loaded.
textTrack->setReadinessState(TextTrack::Loaded);
// 7. Set the new text track's mode to the mode consistent with the user's preferences and the requirements of
// the relevant specification for the data.
// - This will happen in configureTextTracks()
scheduleDelayedAction(ConfigureTextTracks);
// 8. Add the new text track to the media element's list of text tracks.
// 9. Fire an event with the name addtrack, that does not bubble and is not cancelable, and that uses the TrackEvent
// interface, with the track attribute initialized to the text track's TextTrack object, at the media element's
// textTracks attribute's TextTrackList object.
addTextTrack(textTrack.release());
}
void HTMLMediaElement::mediaPlayerDidAddVideoTrack(PassRefPtr<VideoTrackPrivate> prpTrack)
{
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return;
addVideoTrack(VideoTrack::create(this, prpTrack));
}
void HTMLMediaElement::mediaPlayerDidRemoveAudioTrack(PassRefPtr<AudioTrackPrivate> prpTrack)
{
prpTrack->willBeRemoved();
}
void HTMLMediaElement::mediaPlayerDidRemoveTextTrack(PassRefPtr<InbandTextTrackPrivate> prpTrack)
{
prpTrack->willBeRemoved();
}
void HTMLMediaElement::mediaPlayerDidRemoveVideoTrack(PassRefPtr<VideoTrackPrivate> prpTrack)
{
prpTrack->willBeRemoved();
}
#if USE(PLATFORM_TEXT_TRACK_MENU)
void HTMLMediaElement::setSelectedTextTrack(PassRefPtr<PlatformTextTrack> platformTrack)
{
if (!m_textTracks)
return;
TrackDisplayUpdateScope scope(this);
if (!platformTrack) {
setSelectedTextTrack(TextTrack::captionMenuOffItem());
return;
}
TextTrack* textTrack;
if (platformTrack == PlatformTextTrack::captionMenuOffItem())
textTrack = TextTrack::captionMenuOffItem();
else if (platformTrack == PlatformTextTrack::captionMenuAutomaticItem())
textTrack = TextTrack::captionMenuAutomaticItem();
else {
size_t i;
for (i = 0; i < m_textTracks->length(); ++i) {
textTrack = m_textTracks->item(i);
if (textTrack->platformTextTrack() == platformTrack)
break;
}
if (i == m_textTracks->length())
return;
}
setSelectedTextTrack(textTrack);
}
Vector<RefPtr<PlatformTextTrack>> HTMLMediaElement::platformTextTracks()
{
if (!m_textTracks || !m_textTracks->length())
return Vector<RefPtr<PlatformTextTrack>>();
Vector<RefPtr<PlatformTextTrack>> platformTracks;
for (size_t i = 0; i < m_textTracks->length(); ++i)
platformTracks.append(m_textTracks->item(i)->platformTextTrack());
return platformTracks;
}
void HTMLMediaElement::notifyMediaPlayerOfTextTrackChanges()
{
if (!m_textTracks || !m_textTracks->length() || !platformTextTrackMenu())
return;
m_platformMenu->tracksDidChange();
}
PlatformTextTrackMenuInterface* HTMLMediaElement::platformTextTrackMenu()
{
if (m_platformMenu)
return m_platformMenu.get();
if (!m_player || !m_player->implementsTextTrackControls())
return 0;
m_platformMenu = m_player->textTrackMenu();
if (!m_platformMenu)
return 0;
m_platformMenu->setClient(this);
return m_platformMenu.get();
}
#endif // #if USE(PLATFORM_TEXT_TRACK_MENU)
void HTMLMediaElement::closeCaptionTracksChanged()
{
if (hasMediaControls())
mediaControls()->closedCaptionTracksChanged();
#if USE(PLATFORM_TEXT_TRACK_MENU)
if (m_player && m_player->implementsTextTrackControls())
scheduleDelayedAction(TextTrackChangesNotification);
#endif
}
void HTMLMediaElement::addAudioTrack(PassRefPtr<AudioTrack> track)
{
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return;
audioTracks()->append(track);
}
void HTMLMediaElement::addTextTrack(PassRefPtr<TextTrack> track)
{
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return;
textTracks()->append(track);
closeCaptionTracksChanged();
}
void HTMLMediaElement::addVideoTrack(PassRefPtr<VideoTrack> track)
{
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return;
videoTracks()->append(track);
}
void HTMLMediaElement::removeAudioTrack(AudioTrack* track)
{
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return;
m_audioTracks->remove(track);
}
void HTMLMediaElement::removeTextTrack(TextTrack* track, bool scheduleEvent)
{
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return;
TrackDisplayUpdateScope scope(this);
TextTrackCueList* cues = track->cues();
if (cues)
textTrackRemoveCues(track, cues);
track->clearClient();
m_textTracks->remove(track, scheduleEvent);
closeCaptionTracksChanged();
}
void HTMLMediaElement::removeVideoTrack(VideoTrack* track)
{
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return;
m_videoTracks->remove(track);
}
void HTMLMediaElement::forgetResourceSpecificTracks()
{
while (m_audioTracks && m_audioTracks->length())
removeAudioTrack(m_audioTracks->lastItem());
if (m_textTracks) {
TrackDisplayUpdateScope scope(this);
for (int i = m_textTracks->length() - 1; i >= 0; --i) {
TextTrack* track = m_textTracks->item(i);
if (track->trackType() == TextTrack::InBand)
removeTextTrack(track, false);
}
}
while (m_videoTracks && m_videoTracks->length())
removeVideoTrack(m_videoTracks->lastItem());
}
PassRefPtr<TextTrack> HTMLMediaElement::addTextTrack(const String& kind, const String& label, const String& language, ExceptionCode& ec)
{
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return 0;
// 4.8.10.12.4 Text track API
// The addTextTrack(kind, label, language) method of media elements, when invoked, must run the following steps:
// 1. If kind is not one of the following strings, then throw a SyntaxError exception and abort these steps
if (!TextTrack::isValidKindKeyword(kind)) {
ec = SYNTAX_ERR;
return 0;
}
// 2. If the label argument was omitted, let label be the empty string.
// 3. If the language argument was omitted, let language be the empty string.
// 4. Create a new TextTrack object.
// 5. Create a new text track corresponding to the new object, and set its text track kind to kind, its text
// track label to label, its text track language to language...
RefPtr<TextTrack> textTrack = TextTrack::create(ActiveDOMObject::scriptExecutionContext(), this, kind, emptyString(), label, language);
// Note, due to side effects when changing track parameters, we have to
// first append the track to the text track list.
// 6. Add the new text track to the media element's list of text tracks.
addTextTrack(textTrack);
// ... its text track readiness state to the text track loaded state ...
textTrack->setReadinessState(TextTrack::Loaded);
// ... its text track mode to the text track hidden mode, and its text track list of cues to an empty list ...
textTrack->setMode(TextTrack::hiddenKeyword());
return textTrack.release();
}
AudioTrackList* HTMLMediaElement::audioTracks()
{
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return 0;
if (!m_audioTracks)
m_audioTracks = AudioTrackList::create(this, ActiveDOMObject::scriptExecutionContext());
return m_audioTracks.get();
}
TextTrackList* HTMLMediaElement::textTracks()
{
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return 0;
if (!m_textTracks)
m_textTracks = TextTrackList::create(this, ActiveDOMObject::scriptExecutionContext());
return m_textTracks.get();
}
VideoTrackList* HTMLMediaElement::videoTracks()
{
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return 0;
if (!m_videoTracks)
m_videoTracks = VideoTrackList::create(this, ActiveDOMObject::scriptExecutionContext());
return m_videoTracks.get();
}
void HTMLMediaElement::didAddTextTrack(HTMLTrackElement* trackElement)
{
ASSERT(trackElement->hasTagName(trackTag));
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return;
// 4.8.10.12.3 Sourcing out-of-band text tracks
// When a track element's parent element changes and the new parent is a media element,
// then the user agent must add the track element's corresponding text track to the
// media element's list of text tracks ... [continues in TextTrackList::append]
RefPtr<TextTrack> textTrack = trackElement->track();
if (!textTrack)
return;
addTextTrack(textTrack.release());
// Do not schedule the track loading until parsing finishes so we don't start before all tracks
// in the markup have been added.
if (!m_parsingInProgress)
scheduleDelayedAction(ConfigureTextTracks);
if (hasMediaControls())
mediaControls()->closedCaptionTracksChanged();
}
void HTMLMediaElement::didRemoveTextTrack(HTMLTrackElement* trackElement)
{
ASSERT(trackElement->hasTagName(trackTag));
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return;
#if !LOG_DISABLED
if (trackElement->hasTagName(trackTag)) {
URL url = trackElement->getNonEmptyURLAttribute(srcAttr);
LOG(Media, "HTMLMediaElement::didRemoveTrack(%p) - 'src' is %s", this, urlForLoggingMedia(url).utf8().data());
}
#endif
RefPtr<TextTrack> textTrack = trackElement->track();
if (!textTrack)
return;
textTrack->setHasBeenConfigured(false);
if (!m_textTracks)
return;
// 4.8.10.12.3 Sourcing out-of-band text tracks
// When a track element's parent element changes and the old parent was a media element,
// then the user agent must remove the track element's corresponding text track from the
// media element's list of text tracks.
removeTextTrack(textTrack.get());
size_t index = m_textTracksWhenResourceSelectionBegan.find(textTrack.get());
if (index != notFound)
m_textTracksWhenResourceSelectionBegan.remove(index);
}
void HTMLMediaElement::configureTextTrackGroup(const TrackGroup& group)
{
ASSERT(group.tracks.size());
LOG(Media, "HTMLMediaElement::configureTextTrackGroup(%p)", this);
Page* page = document().page();
CaptionUserPreferences* captionPreferences = page? page->group().captionPreferences() : 0;
CaptionUserPreferences::CaptionDisplayMode displayMode = captionPreferences ? captionPreferences->captionDisplayMode() : CaptionUserPreferences::Automatic;
// First, find the track in the group that should be enabled (if any).
Vector<RefPtr<TextTrack>> currentlyEnabledTracks;
RefPtr<TextTrack> trackToEnable;
RefPtr<TextTrack> defaultTrack;
RefPtr<TextTrack> fallbackTrack;
RefPtr<TextTrack> forcedSubitleTrack;
int highestTrackScore = 0;
int highestForcedScore = 0;
// If there is a visible track, it has already been configured so it won't be considered in the loop below. We don't want to choose another
// track if it is less suitable, and we do want to disable it if another track is more suitable.
int alreadyVisibleTrackScore = 0;
if (group.visibleTrack && captionPreferences) {
alreadyVisibleTrackScore = captionPreferences->textTrackSelectionScore(group.visibleTrack.get(), this);
currentlyEnabledTracks.append(group.visibleTrack);
}
for (size_t i = 0; i < group.tracks.size(); ++i) {
RefPtr<TextTrack> textTrack = group.tracks[i];
if (m_processingPreferenceChange && textTrack->mode() == TextTrack::showingKeyword())
currentlyEnabledTracks.append(textTrack);
int trackScore = captionPreferences ? captionPreferences->textTrackSelectionScore(textTrack.get(), this) : 0;
LOG(Media, "HTMLMediaElement::configureTextTrackGroup(%p) - '%s' track with language '%s' has score %i", this, textTrack->kind().string().utf8().data(), textTrack->language().string().utf8().data(), trackScore);
if (trackScore) {
// * If the text track kind is { [subtitles or captions] [descriptions] } and the user has indicated an interest in having a
// track with this text track kind, text track language, and text track label enabled, and there is no
// other text track in the media element's list of text tracks with a text track kind of either subtitles
// or captions whose text track mode is showing
// ...
// * If the text track kind is chapters and the text track language is one that the user agent has reason
// to believe is appropriate for the user, and there is no other text track in the media element's list of
// text tracks with a text track kind of chapters whose text track mode is showing
// Let the text track mode be showing.
if (trackScore > highestTrackScore && trackScore > alreadyVisibleTrackScore) {
highestTrackScore = trackScore;
trackToEnable = textTrack;
}
if (!defaultTrack && textTrack->isDefault())
defaultTrack = textTrack;
if (!defaultTrack && !fallbackTrack)
fallbackTrack = textTrack;
if (textTrack->containsOnlyForcedSubtitles() && trackScore > highestForcedScore) {
forcedSubitleTrack = textTrack;
highestForcedScore = trackScore;
}
} else if (!group.visibleTrack && !defaultTrack && textTrack->isDefault()) {
// * If the track element has a default attribute specified, and there is no other text track in the media
// element's list of text tracks whose text track mode is showing or showing by default
// Let the text track mode be showing by default.
if (group.kind != TrackGroup::CaptionsAndSubtitles || displayMode != CaptionUserPreferences::ForcedOnly)
defaultTrack = textTrack;
}
}
if (!trackToEnable && defaultTrack)
trackToEnable = defaultTrack;
// If no track matches the user's preferred language, none was marked as 'default', and there is a forced subtitle track
// in the same language as the language of the primary audio track, enable it.
if (!trackToEnable && forcedSubitleTrack)
trackToEnable = forcedSubitleTrack;
// If no track matches, don't disable an already visible track unless preferences say they all should be off.
if (group.kind != TrackGroup::CaptionsAndSubtitles || displayMode != CaptionUserPreferences::ForcedOnly) {
if (!trackToEnable && !defaultTrack && group.visibleTrack)
trackToEnable = group.visibleTrack;
}
// If no track matches the user's preferred language and non was marked 'default', enable the first track
// because the user has explicitly stated a preference for this kind of track.
if (!trackToEnable && fallbackTrack)
trackToEnable = fallbackTrack;
if (trackToEnable)
m_subtitleTrackLanguage = trackToEnable->language();
else
m_subtitleTrackLanguage = emptyString();
if (currentlyEnabledTracks.size()) {
for (size_t i = 0; i < currentlyEnabledTracks.size(); ++i) {
RefPtr<TextTrack> textTrack = currentlyEnabledTracks[i];
if (textTrack != trackToEnable)
textTrack->setMode(TextTrack::disabledKeyword());
}
}
if (trackToEnable) {
trackToEnable->setMode(TextTrack::showingKeyword());
// If user preferences indicate we should always display captions, make sure we reflect the
// proper status via the webkitClosedCaptionsVisible API call:
if (!webkitClosedCaptionsVisible() && closedCaptionsVisible() && displayMode == CaptionUserPreferences::AlwaysOn)
m_webkitLegacyClosedCaptionOverride = true;
}
updateCaptionContainer();
m_processingPreferenceChange = false;
}
static JSC::JSValue controllerJSValue(JSC::ExecState& exec, JSDOMGlobalObject& globalObject, HTMLMediaElement& media)
{
auto mediaJSWrapper = toJS(&exec, &globalObject, &media);
// Retrieve the controller through the JS object graph
JSC::JSObject* mediaJSWrapperObject = JSC::jsDynamicCast<JSC::JSObject*>(mediaJSWrapper);
if (!mediaJSWrapperObject)
return JSC::jsNull();
JSC::Identifier controlsHost(&exec.vm(), "controlsHost");
JSC::JSValue controlsHostJSWrapper = mediaJSWrapperObject->get(&exec, controlsHost);
if (exec.hadException())
return JSC::jsNull();
JSC::JSObject* controlsHostJSWrapperObject = JSC::jsDynamicCast<JSC::JSObject*>(controlsHostJSWrapper);
if (!controlsHostJSWrapperObject)
return JSC::jsNull();
JSC::Identifier controllerID(&exec.vm(), "controller");
JSC::JSValue controllerJSWrapper = controlsHostJSWrapperObject->get(&exec, controllerID);
if (exec.hadException())
return JSC::jsNull();
return controllerJSWrapper;
}
void HTMLMediaElement::updateCaptionContainer()
{
LOG(Media, "HTMLMediaElement::updateCaptionContainer(%p)", this);
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
Page* page = document().page();
if (!page)
return;
DOMWrapperWorld& world = ensureIsolatedWorld();
if (!ensureMediaControlsInjectedScript())
return;
ensureUserAgentShadowRoot();
if (!m_mediaControlsHost)
m_mediaControlsHost = MediaControlsHost::create(this);
ScriptController& scriptController = page->mainFrame().script();
JSDOMGlobalObject* globalObject = JSC::jsCast<JSDOMGlobalObject*>(scriptController.globalObject(world));
JSC::ExecState* exec = globalObject->globalExec();
JSC::JSLockHolder lock(exec);
JSC::JSValue controllerValue = controllerJSValue(*exec, *globalObject, *this);
JSC::JSObject* controllerObject = JSC::jsDynamicCast<JSC::JSObject*>(controllerValue);
if (!controllerObject)
return;
// The media controls script must provide a method on the Controller object with the following details.
// Name: updateCaptionContainer
// Parameters:
// None
// Return value:
// None
JSC::JSValue methodValue = controllerObject->get(exec, JSC::Identifier(exec, "updateCaptionContainer"));
JSC::JSObject* methodObject = JSC::jsDynamicCast<JSC::JSObject*>(methodValue);
if (!methodObject)
return;
JSC::CallData callData;
JSC::CallType callType = methodObject->methodTable()->getCallData(methodObject, callData);
if (callType == JSC::CallTypeNone)
return;
JSC::MarkedArgumentBuffer noArguments;
JSC::call(exec, methodObject, callType, callData, controllerObject, noArguments);
if (exec->hadException())
exec->clearException();
#endif
}
void HTMLMediaElement::setSelectedTextTrack(TextTrack* trackToSelect)
{
TextTrackList* trackList = textTracks();
if (!trackList || !trackList->length())
return;
if (trackToSelect != TextTrack::captionMenuOffItem() && trackToSelect != TextTrack::captionMenuAutomaticItem()) {
if (!trackList->contains(trackToSelect))
return;
for (int i = 0, length = trackList->length(); i < length; ++i) {
TextTrack* track = trackList->item(i);
if (!trackToSelect || track != trackToSelect)
track->setMode(TextTrack::disabledKeyword());
else
track->setMode(TextTrack::showingKeyword());
}
} else if (trackToSelect == TextTrack::captionMenuOffItem()) {
for (int i = 0, length = trackList->length(); i < length; ++i)
trackList->item(i)->setMode(TextTrack::disabledKeyword());
}
CaptionUserPreferences* captionPreferences = document().page() ? document().page()->group().captionPreferences() : 0;
if (!captionPreferences)
return;
CaptionUserPreferences::CaptionDisplayMode displayMode = captionPreferences->captionDisplayMode();
if (trackToSelect == TextTrack::captionMenuOffItem())
displayMode = CaptionUserPreferences::ForcedOnly;
else if (trackToSelect == TextTrack::captionMenuAutomaticItem())
displayMode = CaptionUserPreferences::Automatic;
else {
displayMode = CaptionUserPreferences::AlwaysOn;
if (trackToSelect->language().length())
captionPreferences->setPreferredLanguage(trackToSelect->language());
}
captionPreferences->setCaptionDisplayMode(displayMode);
}
void HTMLMediaElement::configureTextTracks()
{
TrackGroup captionAndSubtitleTracks(TrackGroup::CaptionsAndSubtitles);
TrackGroup descriptionTracks(TrackGroup::Description);
TrackGroup chapterTracks(TrackGroup::Chapter);
TrackGroup metadataTracks(TrackGroup::Metadata);
TrackGroup otherTracks(TrackGroup::Other);
if (!m_textTracks)
return;
for (size_t i = 0; i < m_textTracks->length(); ++i) {
RefPtr<TextTrack> textTrack = m_textTracks->item(i);
if (!textTrack)
continue;
String kind = textTrack->kind();
TrackGroup* currentGroup;
if (kind == TextTrack::subtitlesKeyword() || kind == TextTrack::captionsKeyword() || kind == TextTrack::forcedKeyword())
currentGroup = &captionAndSubtitleTracks;
else if (kind == TextTrack::descriptionsKeyword())
currentGroup = &descriptionTracks;
else if (kind == TextTrack::chaptersKeyword())
currentGroup = &chapterTracks;
else if (kind == TextTrack::metadataKeyword())
currentGroup = &metadataTracks;
else
currentGroup = &otherTracks;
if (!currentGroup->visibleTrack && textTrack->mode() == TextTrack::showingKeyword())
currentGroup->visibleTrack = textTrack;
if (!currentGroup->defaultTrack && textTrack->isDefault())
currentGroup->defaultTrack = textTrack;
// Do not add this track to the group if it has already been automatically configured
// as we only want to call configureTextTrack once per track so that adding another
// track after the initial configuration doesn't reconfigure every track - only those
// that should be changed by the new addition. For example all metadata tracks are
// disabled by default, and we don't want a track that has been enabled by script
// to be disabled automatically when a new metadata track is added later.
if (textTrack->hasBeenConfigured())
continue;
if (textTrack->language().length())
currentGroup->hasSrcLang = true;
currentGroup->tracks.append(textTrack);
}
if (captionAndSubtitleTracks.tracks.size())
configureTextTrackGroup(captionAndSubtitleTracks);
if (descriptionTracks.tracks.size())
configureTextTrackGroup(descriptionTracks);
if (chapterTracks.tracks.size())
configureTextTrackGroup(chapterTracks);
if (metadataTracks.tracks.size())
configureTextTrackGroup(metadataTracks);
if (otherTracks.tracks.size())
configureTextTrackGroup(otherTracks);
configureTextTrackDisplay();
if (hasMediaControls())
mediaControls()->closedCaptionTracksChanged();
}
#endif
bool HTMLMediaElement::havePotentialSourceChild()
{
// Stash the current <source> node and next nodes so we can restore them after checking
// to see there is another potential.
RefPtr<HTMLSourceElement> currentSourceNode = m_currentSourceNode;
RefPtr<Node> nextNode = m_nextChildNodeToConsider;
URL nextURL = selectNextSourceChild(0, 0, DoNothing);
m_currentSourceNode = currentSourceNode;
m_nextChildNodeToConsider = nextNode;
return nextURL.isValid();
}
URL HTMLMediaElement::selectNextSourceChild(ContentType* contentType, String* keySystem, InvalidURLAction actionIfInvalid)
{
#if !LOG_DISABLED
// Don't log if this was just called to find out if there are any valid <source> elements.
bool shouldLog = actionIfInvalid != DoNothing;
if (shouldLog)
LOG(Media, "HTMLMediaElement::selectNextSourceChild(%p)", this);
#endif
if (!m_nextChildNodeToConsider) {
#if !LOG_DISABLED
if (shouldLog)
LOG(Media, "HTMLMediaElement::selectNextSourceChild(%p) - end of list, stopping", this);
#endif
return URL();
}
URL mediaURL;
HTMLSourceElement* source = nullptr;
String type;
String system;
bool lookingForStartNode = m_nextChildNodeToConsider;
bool canUseSourceElement = false;
bool okToLoadSourceURL;
NodeVector potentialSourceNodes;
getChildNodes(*this, potentialSourceNodes);
for (unsigned i = 0; !canUseSourceElement && i < potentialSourceNodes.size(); ++i) {
Node& node = potentialSourceNodes[i].get();
if (lookingForStartNode && m_nextChildNodeToConsider != &node)
continue;
lookingForStartNode = false;
if (!node.hasTagName(sourceTag))
continue;
if (node.parentNode() != this)
continue;
source = downcast<HTMLSourceElement>(&node);
// If candidate does not have a src attribute, or if its src attribute's value is the empty string ... jump down to the failed step below
mediaURL = source->getNonEmptyURLAttribute(srcAttr);
#if !LOG_DISABLED
if (shouldLog)
LOG(Media, "HTMLMediaElement::selectNextSourceChild(%p) - 'src' is %s", this, urlForLoggingMedia(mediaURL).utf8().data());
#endif
if (mediaURL.isEmpty())
goto check_again;
if (source->fastHasAttribute(mediaAttr)) {
MediaQueryEvaluator screenEval("screen", document().frame(), renderer() ? &renderer()->style() : nullptr);
RefPtr<MediaQuerySet> media = MediaQuerySet::createAllowingDescriptionSyntax(source->media());
#if !LOG_DISABLED
if (shouldLog)
LOG(Media, "HTMLMediaElement::selectNextSourceChild(%p) - 'media' is %s", this, source->media().utf8().data());
#endif
if (!screenEval.eval(media.get()))
goto check_again;
}
type = source->type();
// FIXME(82965): Add support for keySystem in <source> and set system from source.
if (type.isEmpty() && mediaURL.protocolIsData())
type = mimeTypeFromDataURL(mediaURL);
if (!type.isEmpty() || !system.isEmpty()) {
#if !LOG_DISABLED
if (shouldLog)
LOG(Media, "HTMLMediaElement::selectNextSourceChild(%p) - 'type' is '%s' - key system is '%s'", this, type.utf8().data(), system.utf8().data());
#endif
MediaEngineSupportParameters parameters;
ContentType contentType(type);
parameters.type = contentType.type().lower();
parameters.codecs = contentType.parameter(ASCIILiteral("codecs"));
parameters.url = mediaURL;
#if ENABLE(ENCRYPTED_MEDIA)
parameters.keySystem = system;
#endif
#if ENABLE(MEDIA_SOURCE)
parameters.isMediaSource = mediaURL.protocolIs(mediaSourceBlobProtocol);
#endif
if (!MediaPlayer::supportsType(parameters, this))
goto check_again;
}
// Is it safe to load this url?
okToLoadSourceURL = isSafeToLoadURL(mediaURL, actionIfInvalid) && dispatchBeforeLoadEvent(mediaURL.string());
// A 'beforeload' event handler can mutate the DOM, so check to see if the source element is still a child node.
if (node.parentNode() != this) {
LOG(Media, "HTMLMediaElement::selectNextSourceChild(%p) - 'beforeload' removed current element", this);
source = 0;
goto check_again;
}
if (!okToLoadSourceURL)
goto check_again;
// Making it this far means the <source> looks reasonable.
canUseSourceElement = true;
check_again:
if (!canUseSourceElement && actionIfInvalid == Complain && source)
source->scheduleErrorEvent();
}
if (canUseSourceElement) {
if (contentType)
*contentType = ContentType(type);
if (keySystem)
*keySystem = system;
m_currentSourceNode = source;
m_nextChildNodeToConsider = source->nextSibling();
} else {
m_currentSourceNode = 0;
m_nextChildNodeToConsider = 0;
}
#if !LOG_DISABLED
if (shouldLog)
LOG(Media, "HTMLMediaElement::selectNextSourceChild(%p) -> %p, %s", this, m_currentSourceNode.get(), canUseSourceElement ? urlForLoggingMedia(mediaURL).utf8().data() : "");
#endif
return canUseSourceElement ? mediaURL : URL();
}
void HTMLMediaElement::sourceWasAdded(HTMLSourceElement* source)
{
LOG(Media, "HTMLMediaElement::sourceWasAdded(%p) - %p", this, source);
#if !LOG_DISABLED
if (source->hasTagName(sourceTag)) {
URL url = source->getNonEmptyURLAttribute(srcAttr);
LOG(Media, "HTMLMediaElement::sourceWasAdded(%p) - 'src' is %s", this, urlForLoggingMedia(url).utf8().data());
}
#endif
// We should only consider a <source> element when there is not src attribute at all.
if (fastHasAttribute(srcAttr))
return;
// 4.8.8 - If a source element is inserted as a child of a media element that has no src
// attribute and whose networkState has the value NETWORK_EMPTY, the user agent must invoke
// the media element's resource selection algorithm.
if (networkState() == HTMLMediaElement::NETWORK_EMPTY) {
scheduleDelayedAction(LoadMediaResource);
m_nextChildNodeToConsider = source;
return;
}
if (m_currentSourceNode && source == m_currentSourceNode->nextSibling()) {
LOG(Media, "HTMLMediaElement::sourceWasAdded(%p) - <source> inserted immediately after current source", this);
m_nextChildNodeToConsider = source;
return;
}
if (m_nextChildNodeToConsider)
return;
// 4.8.9.5, resource selection algorithm, source elements section:
// 21. Wait until the node after pointer is a node other than the end of the list. (This step might wait forever.)
// 22. Asynchronously await a stable state...
// 23. Set the element's delaying-the-load-event flag back to true (this delays the load event again, in case
// it hasn't been fired yet).
setShouldDelayLoadEvent(true);
// 24. Set the networkState back to NETWORK_LOADING.
m_networkState = NETWORK_LOADING;
// 25. Jump back to the find next candidate step above.
m_nextChildNodeToConsider = source;
scheduleNextSourceChild();
}
void HTMLMediaElement::sourceWasRemoved(HTMLSourceElement* source)
{
LOG(Media, "HTMLMediaElement::sourceWasRemoved(%p) - %p", this, source);
#if !LOG_DISABLED
if (source->hasTagName(sourceTag)) {
URL url = source->getNonEmptyURLAttribute(srcAttr);
LOG(Media, "HTMLMediaElement::sourceWasRemoved(%p) - 'src' is %s", this, urlForLoggingMedia(url).utf8().data());
}
#endif
if (source != m_currentSourceNode && source != m_nextChildNodeToConsider)
return;
if (source == m_nextChildNodeToConsider) {
if (m_currentSourceNode)
m_nextChildNodeToConsider = m_currentSourceNode->nextSibling();
LOG(Media, "HTMLMediaElement::sourceRemoved(%p) - m_nextChildNodeToConsider set to %p", this, m_nextChildNodeToConsider.get());
} else if (source == m_currentSourceNode) {
// Clear the current source node pointer, but don't change the movie as the spec says:
// 4.8.8 - Dynamically modifying a source element and its attribute when the element is already
// inserted in a video or audio element will have no effect.
m_currentSourceNode = 0;
LOG(Media, "HTMLMediaElement::sourceRemoved(%p) - m_currentSourceNode set to 0", this);
}
}
void HTMLMediaElement::mediaPlayerTimeChanged(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerTimeChanged(%p)", this);
#if ENABLE(VIDEO_TRACK)
if (RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
updateActiveTextTrackCues(currentMediaTime());
#endif
beginProcessingMediaPlayerCallback();
invalidateCachedTime();
// 4.8.10.9 step 14 & 15. Needed if no ReadyState change is associated with the seek.
if (m_seeking && m_readyState >= HAVE_CURRENT_DATA && !m_player->seeking())
finishSeek();
// Always call scheduleTimeupdateEvent when the media engine reports a time discontinuity,
// it will only queue a 'timeupdate' event if we haven't already posted one at the current
// movie time.
else
scheduleTimeupdateEvent(false);
MediaTime now = currentMediaTime();
MediaTime dur = durationMediaTime();
double playbackRate = effectivePlaybackRate();
// When the current playback position reaches the end of the media resource then the user agent must follow these steps:
if (dur.isValid() && dur) {
// If the media element has a loop attribute specified and does not have a current media controller,
if (loop() && !m_mediaController && playbackRate > 0) {
m_sentEndEvent = false;
// then seek to the earliest possible position of the media resource and abort these steps when the direction of
// playback is forwards,
if (now >= dur)
seekInternal(MediaTime::zeroTime());
} else if ((now <= MediaTime::zeroTime() && playbackRate < 0) || (now >= dur && playbackRate > 0)) {
// If the media element does not have a current media controller, and the media element
// has still ended playback and paused is false,
if (!m_mediaController && !m_paused) {
// changes paused to true and fires a simple event named pause at the media element.
m_paused = true;
scheduleEvent(eventNames().pauseEvent);
m_mediaSession->clientWillPausePlayback();
}
// Queue a task to fire a simple event named ended at the media element.
if (!m_sentEndEvent) {
m_sentEndEvent = true;
scheduleEvent(eventNames().endedEvent);
}
// If the media element has a current media controller, then report the controller state
// for the media element's current media controller.
updateMediaController();
} else
m_sentEndEvent = false;
} else {
#if PLATFORM(IOS)
// The controller changes movie time directly instead of calling through here so we need
// to post timeupdate events in response to time changes.
scheduleTimeupdateEvent(false);
#endif
m_sentEndEvent = false;
}
updatePlayState();
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerVolumeChanged(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerVolumeChanged(%p)", this);
beginProcessingMediaPlayerCallback();
if (m_player) {
double vol = m_player->volume();
if (vol != m_volume) {
m_volume = vol;
updateVolume();
scheduleEvent(eventNames().volumechangeEvent);
}
}
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerMuteChanged(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerMuteChanged(%p)", this);
beginProcessingMediaPlayerCallback();
if (m_player)
setMuted(m_player->muted());
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerDurationChanged(MediaPlayer* player)
{
LOG(Media, "HTMLMediaElement::mediaPlayerDurationChanged(%p)", this);
beginProcessingMediaPlayerCallback();
scheduleEvent(eventNames().durationchangeEvent);
mediaPlayerCharacteristicChanged(player);
MediaTime now = currentMediaTime();
MediaTime dur = durationMediaTime();
if (now > dur)
seekInternal(dur);
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerRateChanged(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerRateChanged(%p)", this);
beginProcessingMediaPlayerCallback();
// Stash the rate in case the one we tried to set isn't what the engine is
// using (eg. it can't handle the rate we set)
m_playbackRate = m_player->rate();
if (m_playing)
invalidateCachedTime();
updateSleepDisabling();
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerPlaybackStateChanged(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerPlaybackStateChanged(%p)", this);
if (!m_player || m_pausedInternal)
return;
beginProcessingMediaPlayerCallback();
if (m_player->paused())
pauseInternal();
else
playInternal();
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerSawUnsupportedTracks(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerSawUnsupportedTracks(%p)", this);
// The MediaPlayer came across content it cannot completely handle.
// This is normally acceptable except when we are in a standalone
// MediaDocument. If so, tell the document what has happened.
if (document().isMediaDocument())
toMediaDocument(document()).mediaElementSawUnsupportedTracks();
}
void HTMLMediaElement::mediaPlayerResourceNotSupported(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerResourceNotSupported(%p)", this);
// The MediaPlayer came across content which no installed engine supports.
mediaLoadingFailed(MediaPlayer::FormatError);
}
// MediaPlayerPresentation methods
void HTMLMediaElement::mediaPlayerRepaint(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
updateDisplayState();
if (renderer())
renderer()->repaint();
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerSizeChanged(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerSizeChanged(%p)", this);
beginProcessingMediaPlayerCallback();
if (renderer())
renderer()->updateFromElement();
endProcessingMediaPlayerCallback();
}
bool HTMLMediaElement::mediaPlayerRenderingCanBeAccelerated(MediaPlayer*)
{
if (renderer() && renderer()->isVideo())
return renderer()->view().compositor().canAccelerateVideoRendering(toRenderVideo(*renderer()));
return false;
}
void HTMLMediaElement::mediaPlayerRenderingModeChanged(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerRenderingModeChanged(%p)", this);
// Kick off a fake recalcStyle that will update the compositing tree.
setNeedsStyleRecalc(SyntheticStyleChange);
}
#if PLATFORM(WIN) && USE(AVFOUNDATION)
GraphicsDeviceAdapter* HTMLMediaElement::mediaPlayerGraphicsDeviceAdapter(const MediaPlayer*) const
{
if (!document().page())
return 0;
return document().page()->chrome().client().graphicsDeviceAdapter();
}
#endif
void HTMLMediaElement::mediaPlayerEngineUpdated(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerEngineUpdated(%p)", this);
beginProcessingMediaPlayerCallback();
if (renderer())
renderer()->updateFromElement();
endProcessingMediaPlayerCallback();
#if ENABLE(MEDIA_SOURCE)
m_droppedVideoFrames = 0;
#endif
m_havePreparedToPlay = false;
#if PLATFORM(IOS)
if (!m_player)
return;
m_player->setVideoFullscreenFrame(m_videoFullscreenFrame);
m_player->setVideoFullscreenGravity(m_videoFullscreenGravity);
m_player->setVideoFullscreenLayer(m_videoFullscreenLayer.get());
#endif
}
void HTMLMediaElement::mediaPlayerFirstVideoFrameAvailable(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerFirstVideoFrameAvailable(%p) - current display mode = %i", this, (int)displayMode());
beginProcessingMediaPlayerCallback();
if (displayMode() == PosterWaitingForVideo) {
setDisplayMode(Video);
mediaPlayerRenderingModeChanged(m_player.get());
}
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerCharacteristicChanged(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerCharacteristicChanged(%p)", this);
beginProcessingMediaPlayerCallback();
#if ENABLE(VIDEO_TRACK)
if (m_captionDisplayMode == CaptionUserPreferences::Automatic && m_subtitleTrackLanguage != m_player->languageOfPrimaryAudioTrack())
markCaptionAndSubtitleTracksAsUnconfigured(AfterDelay);
#endif
if (potentiallyPlaying() && displayMode() == PosterWaitingForVideo) {
setDisplayMode(Video);
mediaPlayerRenderingModeChanged(m_player.get());
}
if (hasMediaControls())
mediaControls()->reset();
if (renderer())
renderer()->updateFromElement();
endProcessingMediaPlayerCallback();
}
PassRefPtr<TimeRanges> HTMLMediaElement::buffered() const
{
if (!m_player)
return TimeRanges::create();
#if ENABLE(MEDIA_SOURCE)
if (m_mediaSource)
return TimeRanges::create(*m_mediaSource->buffered());
#endif
return TimeRanges::create(*m_player->buffered());
}
PassRefPtr<TimeRanges> HTMLMediaElement::played()
{
if (m_playing) {
MediaTime time = currentMediaTime();
if (time > m_lastSeekTime)
addPlayedRange(m_lastSeekTime, time);
}
if (!m_playedTimeRanges)
m_playedTimeRanges = TimeRanges::create();
return m_playedTimeRanges->copy();
}
PassRefPtr<TimeRanges> HTMLMediaElement::seekable() const
{
if (m_player)
return TimeRanges::create(*m_player->seekable());
return TimeRanges::create();
}
bool HTMLMediaElement::potentiallyPlaying() const
{
if (isBlockedOnMediaController())
return false;
if (!couldPlayIfEnoughData())
return false;
if (m_readyState >= HAVE_FUTURE_DATA)
return true;
return m_readyStateMaximum >= HAVE_FUTURE_DATA && m_readyState < HAVE_FUTURE_DATA;
}
bool HTMLMediaElement::couldPlayIfEnoughData() const
{
if (paused())
return false;
if (endedPlayback())
return false;
if (stoppedDueToErrors())
return false;
if (pausedForUserInteraction())
return false;
return true;
}
bool HTMLMediaElement::endedPlayback() const
{
MediaTime dur = durationMediaTime();
if (!m_player || !dur.isValid())
return false;
// 4.8.10.8 Playing the media resource
// A media element is said to have ended playback when the element's
// readyState attribute is HAVE_METADATA or greater,
if (m_readyState < HAVE_METADATA)
return false;
// and the current playback position is the end of the media resource and the direction
// of playback is forwards, Either the media element does not have a loop attribute specified,
// or the media element has a current media controller.
MediaTime now = currentMediaTime();
if (effectivePlaybackRate() > 0)
return dur > MediaTime::zeroTime() && now >= dur && (!loop() || m_mediaController);
// or the current playback position is the earliest possible position and the direction
// of playback is backwards
if (effectivePlaybackRate() < 0)
return now <= MediaTime::zeroTime();
return false;
}
bool HTMLMediaElement::stoppedDueToErrors() const
{
if (m_readyState >= HAVE_METADATA && m_error) {
RefPtr<TimeRanges> seekableRanges = seekable();
if (!seekableRanges->contain(currentTime()))
return true;
}
return false;
}
bool HTMLMediaElement::pausedForUserInteraction() const
{
if (m_mediaSession->state() == MediaSession::Interrupted)
return true;
return false;
}
MediaTime HTMLMediaElement::minTimeSeekable() const
{
return m_player ? m_player->minTimeSeekable() : MediaTime::zeroTime();
}
MediaTime HTMLMediaElement::maxTimeSeekable() const
{
return m_player ? m_player->maxTimeSeekable() : MediaTime::zeroTime();
}
void HTMLMediaElement::updateVolume()
{
#if PLATFORM(IOS)
// Only the user can change audio volume so update the cached volume and post the changed event.
float volume = m_player->volume();
if (m_volume != volume) {
m_volume = volume;
scheduleEvent(eventNames().volumechangeEvent);
}
#else
if (!m_player)
return;
// Avoid recursion when the player reports volume changes.
if (!processingMediaPlayerCallback()) {
Page* page = document().page();
double volumeMultiplier = page ? page->mediaVolume() : 1;
bool shouldMute = muted();
if (m_mediaController) {
volumeMultiplier *= m_mediaController->volume();
shouldMute = m_mediaController->muted();
}
m_player->setMuted(shouldMute);
if (m_volumeInitialized)
m_player->setVolume(m_volume * volumeMultiplier);
}
if (hasMediaControls())
mediaControls()->changedVolume();
#endif
}
void HTMLMediaElement::updatePlayState()
{
if (!m_player)
return;
if (m_pausedInternal) {
if (!m_player->paused())
m_player->pause();
refreshCachedTime();
m_playbackProgressTimer.stop();
if (hasMediaControls())
mediaControls()->playbackStopped();
m_activityToken = nullptr;
return;
}
bool shouldBePlaying = potentiallyPlaying();
bool playerPaused = m_player->paused();
LOG(Media, "HTMLMediaElement::updatePlayState(%p) - shouldBePlaying = %s, playerPaused = %s", this, boolString(shouldBePlaying), boolString(playerPaused));
if (shouldBePlaying) {
setDisplayMode(Video);
invalidateCachedTime();
if (playerPaused) {
m_mediaSession->clientWillBeginPlayback();
if (m_mediaSession->requiresFullscreenForVideoPlayback(*this) && !isFullscreen())
enterFullscreen();
// Set rate, muted before calling play in case they were set before the media engine was setup.
// The media engine should just stash the rate and muted values since it isn't already playing.
m_player->setRate(effectivePlaybackRate());
m_player->setMuted(muted());
m_player->play();
}
if (hasMediaControls())
mediaControls()->playbackStarted();
if (document().page())
m_activityToken = document().page()->pageThrottler().mediaActivityToken();
startPlaybackProgressTimer();
m_playing = true;
} else {
if (!playerPaused)
m_player->pause();
refreshCachedTime();
m_playbackProgressTimer.stop();
m_playing = false;
MediaTime time = currentMediaTime();
if (time > m_lastSeekTime)
addPlayedRange(m_lastSeekTime, time);
if (couldPlayIfEnoughData())
prepareToPlay();
if (hasMediaControls())
mediaControls()->playbackStopped();
m_activityToken = nullptr;
}
updateMediaController();
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::setPausedInternal(bool b)
{
m_pausedInternal = b;
updatePlayState();
}
void HTMLMediaElement::stopPeriodicTimers()
{
m_progressEventTimer.stop();
m_playbackProgressTimer.stop();
}
void HTMLMediaElement::userCancelledLoad()
{
LOG(Media, "HTMLMediaElement::userCancelledLoad(%p)", this);
// FIXME: We should look to reconcile the iOS and non-iOS code (below).
#if PLATFORM(IOS)
if (m_networkState == NETWORK_EMPTY || m_readyState >= HAVE_METADATA)
return;
#else
if (m_networkState == NETWORK_EMPTY || m_completelyLoaded)
return;
#endif
// If the media data fetching process is aborted by the user:
// 1 - The user agent should cancel the fetching process.
clearMediaPlayer(-1);
// 2 - Set the error attribute to a new MediaError object whose code attribute is set to MEDIA_ERR_ABORTED.
m_error = MediaError::create(MediaError::MEDIA_ERR_ABORTED);
// 3 - Queue a task to fire a simple event named error at the media element.
scheduleEvent(eventNames().abortEvent);
#if ENABLE(MEDIA_SOURCE)
closeMediaSource();
#endif
// 4 - If the media element's readyState attribute has a value equal to HAVE_NOTHING, set the
// element's networkState attribute to the NETWORK_EMPTY value and queue a task to fire a
// simple event named emptied at the element. Otherwise, set the element's networkState
// attribute to the NETWORK_IDLE value.
if (m_readyState == HAVE_NOTHING) {
m_networkState = NETWORK_EMPTY;
scheduleEvent(eventNames().emptiedEvent);
}
else
m_networkState = NETWORK_IDLE;
// 5 - Set the element's delaying-the-load-event flag to false. This stops delaying the load event.
setShouldDelayLoadEvent(false);
// 6 - Abort the overall resource selection algorithm.
m_currentSourceNode = 0;
// Reset m_readyState since m_player is gone.
m_readyState = HAVE_NOTHING;
updateMediaController();
#if ENABLE(VIDEO_TRACK)
if (RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
updateActiveTextTrackCues(MediaTime::zeroTime());
#endif
}
void HTMLMediaElement::clearMediaPlayer(int flags)
{
#if USE(PLATFORM_TEXT_TRACK_MENU)
if (platformTextTrackMenu()) {
m_platformMenu->setClient(0);
m_platformMenu = 0;
}
#endif
#if ENABLE(VIDEO_TRACK)
forgetResourceSpecificTracks();
#endif
#if ENABLE(MEDIA_SOURCE)
closeMediaSource();
#endif
m_player.clear();
stopPeriodicTimers();
m_loadTimer.stop();
clearFlags(m_pendingActionFlags, flags);
m_loadState = WaitingForSource;
#if ENABLE(VIDEO_TRACK)
if (m_textTracks)
configureTextTrackDisplay();
#endif
updateSleepDisabling();
}
bool HTMLMediaElement::canSuspend() const
{
return true;
}
void HTMLMediaElement::stop()
{
LOG(Media, "HTMLMediaElement::stop(%p)", this);
if (m_isInVideoFullscreen)
exitFullscreen();
m_inActiveDocument = false;
// Stop the playback without generating events
m_playing = false;
setPausedInternal(true);
userCancelledLoad();
if (renderer())
renderer()->updateFromElement();
stopPeriodicTimers();
cancelPendingEventsAndCallbacks();
m_asyncEventQueue.close();
// Once an active DOM object has been stopped it can not be restarted, so we can deallocate
// the media player now. Note that userCancelledLoad will already have cleared the player
// if the media was not fully loaded. This handles all other cases.
m_player.clear();
updateSleepDisabling();
}
void HTMLMediaElement::suspend(ReasonForSuspension why)
{
LOG(Media, "HTMLMediaElement::suspend(%p)", this);
switch (why)
{
case DocumentWillBecomeInactive:
stop();
m_mediaSession->addBehaviorRestriction(HTMLMediaSession::RequirePageConsentToResumeMedia);
break;
case DocumentWillBePaused:
case JavaScriptDebuggerPaused:
case PageWillBeSuspended:
case WillDeferLoading:
// Do nothing, we don't pause media playback in these cases.
break;
}
}
void HTMLMediaElement::resume()
{
LOG(Media, "HTMLMediaElement::resume(%p)", this);
m_inActiveDocument = true;
if (!m_mediaSession->pageAllowsPlaybackAfterResuming(*this))
document().addMediaCanStartListener(this);
else
setPausedInternal(false);
m_mediaSession->removeBehaviorRestriction(HTMLMediaSession::RequirePageConsentToResumeMedia);
if (m_error && m_error->code() == MediaError::MEDIA_ERR_ABORTED) {
// Restart the load if it was aborted in the middle by moving the document to the page cache.
// m_error is only left at MEDIA_ERR_ABORTED when the document becomes inactive (it is set to
// MEDIA_ERR_ABORTED while the abortEvent is being sent, but cleared immediately afterwards).
// This behavior is not specified but it seems like a sensible thing to do.
// As it is not safe to immedately start loading now, let's schedule a load.
scheduleDelayedAction(LoadMediaResource);
}
if (renderer())
renderer()->updateFromElement();
}
bool HTMLMediaElement::hasPendingActivity() const
{
return (hasAudio() && isPlaying()) || m_asyncEventQueue.hasPendingEvents();
}
void HTMLMediaElement::mediaVolumeDidChange()
{
LOG(Media, "HTMLMediaElement::mediaVolumeDidChange(%p)", this);
updateVolume();
}
void HTMLMediaElement::visibilityStateChanged()
{
LOG(Media, "HTMLMediaElement::visibilityStateChanged(%p)", this);
m_elementIsHidden = document().hidden();
updateSleepDisabling();
m_mediaSession->visibilityChanged();
}
#if ENABLE(VIDEO_TRACK)
bool HTMLMediaElement::requiresTextTrackRepresentation() const
{
return m_isInVideoFullscreen && m_player ? m_player->requiresTextTrackRepresentation() : false;
}
void HTMLMediaElement::setTextTrackRepresentation(TextTrackRepresentation* representation)
{
if (m_player)
m_player->setTextTrackRepresentation(representation);
}
void HTMLMediaElement::syncTextTrackBounds()
{
if (m_player)
m_player->syncTextTrackBounds();
}
#endif // ENABLE(VIDEO_TRACK)
#if ENABLE(IOS_AIRPLAY)
void HTMLMediaElement::webkitShowPlaybackTargetPicker()
{
m_mediaSession->showPlaybackTargetPicker(*this);
}
bool HTMLMediaElement::webkitCurrentPlaybackTargetIsWireless() const
{
return m_mediaSession->currentPlaybackTargetIsWireless(*this);
}
void HTMLMediaElement::mediaPlayerCurrentPlaybackTargetIsWirelessChanged(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerCurrentPlaybackTargetIsWirelessChanged(%p) - webkitCurrentPlaybackTargetIsWireless = %s", this, boolString(webkitCurrentPlaybackTargetIsWireless()));
scheduleEvent(eventNames().webkitcurrentplaybacktargetiswirelesschangedEvent);
}
void HTMLMediaElement::mediaPlayerPlaybackTargetAvailabilityChanged(MediaPlayer*)
{
enqueuePlaybackTargetAvailabilityChangedEvent();
}
bool HTMLMediaElement::addEventListener(const AtomicString& eventType, PassRefPtr<EventListener> listener, bool useCapture)
{
if (eventType != eventNames().webkitplaybacktargetavailabilitychangedEvent)
return Node::addEventListener(eventType, listener, useCapture);
bool isFirstAvailabilityChangedListener = !hasEventListeners(eventNames().webkitplaybacktargetavailabilitychangedEvent);
if (!Node::addEventListener(eventType, listener, useCapture))
return false;
if (isFirstAvailabilityChangedListener)
m_mediaSession->setHasPlaybackTargetAvailabilityListeners(*this, true);
LOG(Media, "HTMLMediaElement::addEventListener(%p) - 'webkitplaybacktargetavailabilitychanged'", this);
enqueuePlaybackTargetAvailabilityChangedEvent(); // Ensure the event listener gets at least one event.
return true;
}
bool HTMLMediaElement::removeEventListener(const AtomicString& eventType, EventListener* listener, bool useCapture)
{
if (eventType != eventNames().webkitplaybacktargetavailabilitychangedEvent)
return Node::removeEventListener(eventType, listener, useCapture);
if (!Node::removeEventListener(eventType, listener, useCapture))
return false;
bool didRemoveLastAvailabilityChangedListener = !hasEventListeners(eventNames().webkitplaybacktargetavailabilitychangedEvent);
if (didRemoveLastAvailabilityChangedListener)
m_mediaSession->setHasPlaybackTargetAvailabilityListeners(*this, false);
return true;
}
void HTMLMediaElement::enqueuePlaybackTargetAvailabilityChangedEvent()
{
LOG(Media, "HTMLMediaElement::enqueuePlaybackTargetAvailabilityChangedEvent(%p)", this);
RefPtr<Event> event = WebKitPlaybackTargetAvailabilityEvent::create(eventNames().webkitplaybacktargetavailabilitychangedEvent, m_mediaSession->hasWirelessPlaybackTargets(*this));
event->setTarget(this);
m_asyncEventQueue.enqueueEvent(event.release());
}
#endif
double HTMLMediaElement::minFastReverseRate() const
{
return m_player ? m_player->minFastReverseRate() : 0;
}
double HTMLMediaElement::maxFastForwardRate() const
{
return m_player ? m_player->maxFastForwardRate() : 0;
}
bool HTMLMediaElement::isFullscreen() const
{
if (m_isInVideoFullscreen)
return true;
#if ENABLE(FULLSCREEN_API)
if (document().webkitIsFullScreen() && document().webkitCurrentFullScreenElement() == this)
return true;
#endif
return false;
}
void HTMLMediaElement::toggleFullscreenState()
{
LOG(Media, "HTMLMediaElement::toggleFullscreenState(%p) - isFullscreen() is %s", this, boolString(isFullscreen()));
if (isFullscreen())
exitFullscreen();
else
enterFullscreen();
}
void HTMLMediaElement::enterFullscreen()
{
LOG(Media, "HTMLMediaElement::enterFullscreen(%p)", this);
if (m_isInVideoFullscreen)
return;
#if ENABLE(FULLSCREEN_API)
if (document().settings() && document().settings()->fullScreenEnabled()) {
document().requestFullScreenForElement(this, 0, Document::ExemptIFrameAllowFullScreenRequirement);
return;
}
#endif
m_isInVideoFullscreen = true;
if (hasMediaControls())
mediaControls()->enteredFullscreen();
if (document().page() && isHTMLVideoElement(this)) {
HTMLVideoElement& asVideo = downcast<HTMLVideoElement>(*this);
if (document().page()->chrome().client().supportsVideoFullscreen()) {
document().page()->chrome().client().enterVideoFullscreenForVideoElement(&asVideo);
scheduleEvent(eventNames().webkitbeginfullscreenEvent);
}
}
}
void HTMLMediaElement::exitFullscreen()
{
LOG(Media, "HTMLMediaElement::exitFullscreen(%p)", this);
#if ENABLE(FULLSCREEN_API)
if (document().settings() && document().settings()->fullScreenEnabled()) {
if (document().webkitIsFullScreen() && document().webkitCurrentFullScreenElement() == this)
document().webkitCancelFullScreen();
return;
}
#endif
ASSERT(m_isInVideoFullscreen);
m_isInVideoFullscreen = false;
if (hasMediaControls())
mediaControls()->exitedFullscreen();
if (document().page() && isHTMLVideoElement(this)) {
if (m_mediaSession->requiresFullscreenForVideoPlayback(*this))
pauseInternal();
if (document().page()->chrome().client().supportsVideoFullscreen()) {
document().page()->chrome().client().exitVideoFullscreen();
scheduleEvent(eventNames().webkitendfullscreenEvent);
}
}
}
void HTMLMediaElement::didBecomeFullscreenElement()
{
if (hasMediaControls())
mediaControls()->enteredFullscreen();
}
void HTMLMediaElement::willStopBeingFullscreenElement()
{
if (hasMediaControls())
mediaControls()->exitedFullscreen();
}
PlatformMedia HTMLMediaElement::platformMedia() const
{
return m_player ? m_player->platformMedia() : NoPlatformMedia;
}
PlatformLayer* HTMLMediaElement::platformLayer() const
{
return m_player ? m_player->platformLayer() : nullptr;
}
#if PLATFORM(IOS)
void HTMLMediaElement::setVideoFullscreenLayer(PlatformLayer* platformLayer)
{
m_videoFullscreenLayer = platformLayer;
if (!m_player)
return;
m_player->setVideoFullscreenLayer(platformLayer);
setNeedsStyleRecalc(SyntheticStyleChange);
#if ENABLE(VIDEO_TRACK)
if (RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
updateTextTrackDisplay();
#endif
}
void HTMLMediaElement::setVideoFullscreenFrame(FloatRect frame)
{
m_videoFullscreenFrame = frame;
if (m_player)
m_player->setVideoFullscreenFrame(frame);
}
void HTMLMediaElement::setVideoFullscreenGravity(MediaPlayer::VideoGravity gravity)
{
m_videoFullscreenGravity = gravity;
if (m_player)
m_player->setVideoFullscreenGravity(gravity);
}
#endif
bool HTMLMediaElement::hasClosedCaptions() const
{
if (m_player && m_player->hasClosedCaptions())
return true;
#if ENABLE(VIDEO_TRACK)
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled() || !m_textTracks)
return false;
for (unsigned i = 0; i < m_textTracks->length(); ++i) {
if (m_textTracks->item(i)->readinessState() == TextTrack::FailedToLoad)
continue;
if (m_textTracks->item(i)->kind() == TextTrack::captionsKeyword()
|| m_textTracks->item(i)->kind() == TextTrack::subtitlesKeyword())
return true;
}
#endif
return false;
}
bool HTMLMediaElement::closedCaptionsVisible() const
{
return m_closedCaptionsVisible;
}
#if ENABLE(VIDEO_TRACK)
void HTMLMediaElement::updateTextTrackDisplay()
{
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
ensureUserAgentShadowRoot();
ASSERT(m_mediaControlsHost);
m_mediaControlsHost->updateTextTrackContainer();
#else
if (!hasMediaControls() && !createMediaControls())
return;
mediaControls()->updateTextTrackDisplay();
#endif
}
#endif
void HTMLMediaElement::setClosedCaptionsVisible(bool closedCaptionVisible)
{
LOG(Media, "HTMLMediaElement::setClosedCaptionsVisible(%p) - %s", this, boolString(closedCaptionVisible));
m_closedCaptionsVisible = false;
if (!m_player || !hasClosedCaptions())
return;
m_closedCaptionsVisible = closedCaptionVisible;
m_player->setClosedCaptionsVisible(closedCaptionVisible);
#if ENABLE(VIDEO_TRACK)
if (RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled()) {
markCaptionAndSubtitleTracksAsUnconfigured(Immediately);
updateTextTrackDisplay();
}
#else
if (hasMediaControls())
mediaControls()->changedClosedCaptionsVisibility();
#endif
}
void HTMLMediaElement::setWebkitClosedCaptionsVisible(bool visible)
{
m_webkitLegacyClosedCaptionOverride = visible;
setClosedCaptionsVisible(visible);
}
bool HTMLMediaElement::webkitClosedCaptionsVisible() const
{
return m_webkitLegacyClosedCaptionOverride && m_closedCaptionsVisible;
}
bool HTMLMediaElement::webkitHasClosedCaptions() const
{
return hasClosedCaptions();
}
#if ENABLE(MEDIA_STATISTICS)
unsigned HTMLMediaElement::webkitAudioDecodedByteCount() const
{
if (!m_player)
return 0;
return m_player->audioDecodedByteCount();
}
unsigned HTMLMediaElement::webkitVideoDecodedByteCount() const
{
if (!m_player)
return 0;
return m_player->videoDecodedByteCount();
}
#endif
void HTMLMediaElement::mediaCanStart()
{
LOG(Media, "HTMLMediaElement::mediaCanStart(%p)", this);
ASSERT(m_isWaitingUntilMediaCanStart || m_pausedInternal);
if (m_isWaitingUntilMediaCanStart) {
m_isWaitingUntilMediaCanStart = false;
loadInternal();
}
if (m_pausedInternal)
setPausedInternal(false);
}
bool HTMLMediaElement::isURLAttribute(const Attribute& attribute) const
{
return attribute.name() == srcAttr || HTMLElement::isURLAttribute(attribute);
}
void HTMLMediaElement::setShouldDelayLoadEvent(bool shouldDelay)
{
if (m_shouldDelayLoadEvent == shouldDelay)
return;
LOG(Media, "HTMLMediaElement::setShouldDelayLoadEvent(%p) - %s", this, boolString(shouldDelay));
m_shouldDelayLoadEvent = shouldDelay;
if (shouldDelay)
document().incrementLoadEventDelayCount();
else
document().decrementLoadEventDelayCount();
}
void HTMLMediaElement::getSitesInMediaCache(Vector<String>& sites)
{
MediaPlayer::getSitesInMediaCache(sites);
}
void HTMLMediaElement::clearMediaCache()
{
MediaPlayer::clearMediaCache();
}
void HTMLMediaElement::clearMediaCacheForSite(const String& site)
{
MediaPlayer::clearMediaCacheForSite(site);
}
void HTMLMediaElement::resetMediaEngines()
{
MediaPlayer::resetMediaEngines();
}
void HTMLMediaElement::privateBrowsingStateDidChange()
{
if (!m_player)
return;
bool privateMode = document().page() && document().page()->usesEphemeralSession();
LOG(Media, "HTMLMediaElement::privateBrowsingStateDidChange(%p) - %s", this, boolString(privateMode));
m_player->setPrivateBrowsingMode(privateMode);
}
MediaControls* HTMLMediaElement::mediaControls() const
{
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
return 0;
#else
return toMediaControls(userAgentShadowRoot()->firstChild());
#endif
}
bool HTMLMediaElement::hasMediaControls() const
{
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
return false;
#else
if (ShadowRoot* userAgent = userAgentShadowRoot()) {
Node* node = userAgent->firstChild();
ASSERT_WITH_SECURITY_IMPLICATION(!node || node->isMediaControls());
return node;
}
return false;
#endif
}
bool HTMLMediaElement::createMediaControls()
{
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
ensureUserAgentShadowRoot();
return false;
#else
if (hasMediaControls())
return true;
RefPtr<MediaControls> mediaControls = MediaControls::create(document());
if (!mediaControls)
return false;
mediaControls->setMediaController(m_mediaController ? m_mediaController.get() : static_cast<MediaControllerInterface*>(this));
mediaControls->reset();
if (isFullscreen())
mediaControls->enteredFullscreen();
ensureUserAgentShadowRoot().appendChild(mediaControls, ASSERT_NO_EXCEPTION);
if (!controls() || !inDocument())
mediaControls->hide();
return true;
#endif
}
void HTMLMediaElement::configureMediaControls()
{
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
if (!controls() || !inDocument())
return;
ensureUserAgentShadowRoot();
#else
if (!controls() || !inDocument()) {
if (hasMediaControls())
mediaControls()->hide();
return;
}
if (!hasMediaControls() && !createMediaControls())
return;
mediaControls()->show();
#endif
}
#if ENABLE(VIDEO_TRACK)
void HTMLMediaElement::configureTextTrackDisplay(TextTrackVisibilityCheckType checkType)
{
ASSERT(m_textTracks);
if (m_processingPreferenceChange)
return;
LOG(Media, "HTMLMediaElement::configureTextTrackDisplay(%p)", this);
bool haveVisibleTextTrack = false;
for (unsigned i = 0; i < m_textTracks->length(); ++i) {
if (m_textTracks->item(i)->mode() == TextTrack::showingKeyword()) {
haveVisibleTextTrack = true;
break;
}
}
if (checkType == CheckTextTrackVisibility && m_haveVisibleTextTrack == haveVisibleTextTrack) {
updateActiveTextTrackCues(currentMediaTime());
return;
}
m_haveVisibleTextTrack = haveVisibleTextTrack;
m_closedCaptionsVisible = m_haveVisibleTextTrack;
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
if (!m_haveVisibleTextTrack)
return;
ensureUserAgentShadowRoot();
#else
if (!m_haveVisibleTextTrack && !hasMediaControls())
return;
if (!hasMediaControls() && !createMediaControls())
return;
mediaControls()->changedClosedCaptionsVisibility();
if (RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled()) {
updateTextTrackDisplay();
updateActiveTextTrackCues(currentMediaTime());
}
#endif
}
void HTMLMediaElement::captionPreferencesChanged()
{
if (!isVideo())
return;
if (hasMediaControls())
mediaControls()->textTrackPreferencesChanged();
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
if (m_mediaControlsHost)
m_mediaControlsHost->updateCaptionDisplaySizes();
#endif
if (!document().page())
return;
CaptionUserPreferences::CaptionDisplayMode displayMode = document().page()->group().captionPreferences()->captionDisplayMode();
if (m_captionDisplayMode == displayMode)
return;
m_captionDisplayMode = displayMode;
setWebkitClosedCaptionsVisible(m_captionDisplayMode == CaptionUserPreferences::AlwaysOn);
}
void HTMLMediaElement::markCaptionAndSubtitleTracksAsUnconfigured(ReconfigureMode mode)
{
if (!m_textTracks)
return;
LOG(Media, "HTMLMediaElement::markCaptionAndSubtitleTracksAsUnconfigured(%p)", this);
// Mark all tracks as not "configured" so that configureTextTracks()
// will reconsider which tracks to display in light of new user preferences
// (e.g. default tracks should not be displayed if the user has turned off
// captions and non-default tracks should be displayed based on language
// preferences if the user has turned captions on).
for (unsigned i = 0; i < m_textTracks->length(); ++i) {
RefPtr<TextTrack> textTrack = m_textTracks->item(i);
String kind = textTrack->kind();
if (kind == TextTrack::subtitlesKeyword() || kind == TextTrack::captionsKeyword())
textTrack->setHasBeenConfigured(false);
}
m_processingPreferenceChange = true;
clearFlags(m_pendingActionFlags, ConfigureTextTracks);
if (mode == Immediately)
configureTextTracks();
else
scheduleDelayedAction(ConfigureTextTracks);
}
#endif
void HTMLMediaElement::createMediaPlayer()
{
#if ENABLE(WEB_AUDIO)
if (m_audioSourceNode)
m_audioSourceNode->lock();
#endif
#if ENABLE(MEDIA_SOURCE)
if (m_mediaSource)
m_mediaSource->close();
#endif
#if ENABLE(VIDEO_TRACK)
forgetResourceSpecificTracks();
#endif
m_player = MediaPlayer::create(this);
#if ENABLE(WEB_AUDIO)
if (m_audioSourceNode) {
// When creating the player, make sure its AudioSourceProvider knows about the MediaElementAudioSourceNode.
if (audioSourceProvider())
audioSourceProvider()->setClient(m_audioSourceNode);
m_audioSourceNode->unlock();
}
#endif
#if ENABLE(IOS_AIRPLAY)
if (hasEventListeners(eventNames().webkitplaybacktargetavailabilitychangedEvent)) {
m_mediaSession->setHasPlaybackTargetAvailabilityListeners(*this, true);
enqueuePlaybackTargetAvailabilityChangedEvent(); // Ensure the event listener gets at least one event.
}
#endif
}
#if ENABLE(WEB_AUDIO)
void HTMLMediaElement::setAudioSourceNode(MediaElementAudioSourceNode* sourceNode)
{
m_audioSourceNode = sourceNode;
if (audioSourceProvider())
audioSourceProvider()->setClient(m_audioSourceNode);
}
AudioSourceProvider* HTMLMediaElement::audioSourceProvider()
{
if (m_player)
return m_player->audioSourceProvider();
return 0;
}
#endif
const String& HTMLMediaElement::mediaGroup() const
{
return m_mediaGroup;
}
void HTMLMediaElement::setMediaGroup(const String& group)
{
if (m_mediaGroup == group)
return;
m_mediaGroup = group;
// When a media element is created with a mediagroup attribute, and when a media element's mediagroup
// attribute is set, changed, or removed, the user agent must run the following steps:
// 1. Let m [this] be the media element in question.
// 2. Let m have no current media controller, if it currently has one.
setController(0);
// 3. If m's mediagroup attribute is being removed, then abort these steps.
if (group.isNull() || group.isEmpty())
return;
// 4. If there is another media element whose Document is the same as m's Document (even if one or both
// of these elements are not actually in the Document),
HashSet<HTMLMediaElement*> elements = documentToElementSetMap().get(&document());
for (HashSet<HTMLMediaElement*>::iterator i = elements.begin(); i != elements.end(); ++i) {
if (*i == this)
continue;
// and which also has a mediagroup attribute, and whose mediagroup attribute has the same value as
// the new value of m's mediagroup attribute,
if ((*i)->mediaGroup() == group) {
// then let controller be that media element's current media controller.
setController((*i)->controller());
return;
}
}
// Otherwise, let controller be a newly created MediaController.
setController(MediaController::create(document()));
}
MediaController* HTMLMediaElement::controller() const
{
return m_mediaController.get();
}
void HTMLMediaElement::setController(PassRefPtr<MediaController> controller)
{
if (m_mediaController)
m_mediaController->removeMediaElement(this);
m_mediaController = controller;
if (m_mediaController)
m_mediaController->addMediaElement(this);
if (hasMediaControls())
mediaControls()->setMediaController(m_mediaController ? m_mediaController.get() : static_cast<MediaControllerInterface*>(this));
}
void HTMLMediaElement::updateMediaController()
{
if (m_mediaController)
m_mediaController->reportControllerState();
}
bool HTMLMediaElement::isBlocked() const
{
// A media element is a blocked media element if its readyState attribute is in the
// HAVE_NOTHING state, the HAVE_METADATA state, or the HAVE_CURRENT_DATA state,
if (m_readyState <= HAVE_CURRENT_DATA)
return true;
// or if the element has paused for user interaction.
return pausedForUserInteraction();
}
bool HTMLMediaElement::isBlockedOnMediaController() const
{
if (!m_mediaController)
return false;
// A media element is blocked on its media controller if the MediaController is a blocked
// media controller,
if (m_mediaController->isBlocked())
return true;
// or if its media controller position is either before the media resource's earliest possible
// position relative to the MediaController's timeline or after the end of the media resource
// relative to the MediaController's timeline.
double mediaControllerPosition = m_mediaController->currentTime();
if (mediaControllerPosition < 0 || mediaControllerPosition > duration())
return true;
return false;
}
void HTMLMediaElement::prepareMediaFragmentURI()
{
MediaFragmentURIParser fragmentParser(m_currentSrc);
MediaTime dur = durationMediaTime();
MediaTime start = fragmentParser.startTime();
if (start.isValid() && start > MediaTime::zeroTime()) {
m_fragmentStartTime = start;
if (m_fragmentStartTime > dur)
m_fragmentStartTime = dur;
} else
m_fragmentStartTime = MediaTime::invalidTime();
MediaTime end = fragmentParser.endTime();
if (end.isValid() && end > MediaTime::zeroTime() && (!m_fragmentStartTime.isValid() || end > m_fragmentStartTime)) {
m_fragmentEndTime = end;
if (m_fragmentEndTime > dur)
m_fragmentEndTime = dur;
} else
m_fragmentEndTime = MediaTime::invalidTime();
if (m_fragmentStartTime.isValid() && m_readyState < HAVE_FUTURE_DATA)
prepareToPlay();
}
void HTMLMediaElement::applyMediaFragmentURI()
{
if (m_fragmentStartTime.isValid()) {
m_sentEndEvent = false;
seek(m_fragmentStartTime);
}
}
void HTMLMediaElement::updateSleepDisabling()
{
if (!shouldDisableSleep() && m_sleepDisabler)
m_sleepDisabler = nullptr;
else if (shouldDisableSleep() && !m_sleepDisabler)
m_sleepDisabler = DisplaySleepDisabler::create("com.apple.WebCore: HTMLMediaElement playback");
}
bool HTMLMediaElement::shouldDisableSleep() const
{
#if !PLATFORM(COCOA)
return false;
#endif
if (m_elementIsHidden)
return false;
return m_player && !m_player->paused() && hasVideo() && hasAudio() && !loop();
}
String HTMLMediaElement::mediaPlayerReferrer() const
{
Frame* frame = document().frame();
if (!frame)
return String();
return SecurityPolicy::generateReferrerHeader(document().referrerPolicy(), m_currentSrc, frame->loader().outgoingReferrer());
}
String HTMLMediaElement::mediaPlayerUserAgent() const
{
Frame* frame = document().frame();
if (!frame)
return String();
return frame->loader().userAgent(m_currentSrc);
}
#if ENABLE(AVF_CAPTIONS)
Vector<RefPtr<PlatformTextTrack>> HTMLMediaElement::outOfBandTrackSources()
{
Vector<RefPtr<PlatformTextTrack>> outOfBandTrackSources;
for (auto& trackElement : childrenOfType<HTMLTrackElement>(*this)) {
if (!trackElement.fastHasAttribute(srcAttr))
continue;
URL url = trackElement.getNonEmptyURLAttribute(srcAttr);
if (url.isEmpty())
continue;
if (!document().contentSecurityPolicy()->allowMediaFromSource(url))
continue;
PlatformTextTrack::TrackKind platformKind = PlatformTextTrack::Caption;
if (trackElement.kind() == TextTrack::captionsKeyword())
platformKind = PlatformTextTrack::Caption;
else if (trackElement.kind() == TextTrack::subtitlesKeyword())
platformKind = PlatformTextTrack::Subtitle;
else if (trackElement.kind() == TextTrack::descriptionsKeyword())
platformKind = PlatformTextTrack::Description;
else if (trackElement.kind() == TextTrack::forcedKeyword())
platformKind = PlatformTextTrack::Forced;
else
continue;
const AtomicString& mode = trackElement.track()->mode();
PlatformTextTrack::TrackMode platformMode = PlatformTextTrack::Disabled;
if (TextTrack::hiddenKeyword() == mode)
platformMode = PlatformTextTrack::Hidden;
else if (TextTrack::disabledKeyword() == mode)
platformMode = PlatformTextTrack::Disabled;
else if (TextTrack::showingKeyword() == mode)
platformMode = PlatformTextTrack::Showing;
outOfBandTrackSources.append(PlatformTextTrack::createOutOfBand(trackElement.label(), trackElement.srclang(), url.string(), platformMode, platformKind, trackElement.track()->uniqueId(), trackElement.isDefault()));
}
return outOfBandTrackSources;
}
#endif
MediaPlayerClient::CORSMode HTMLMediaElement::mediaPlayerCORSMode() const
{
if (!fastHasAttribute(HTMLNames::crossoriginAttr))
return Unspecified;
if (equalIgnoringCase(fastGetAttribute(HTMLNames::crossoriginAttr), "use-credentials"))
return UseCredentials;
return Anonymous;
}
bool HTMLMediaElement::mediaPlayerNeedsSiteSpecificHacks() const
{
Settings* settings = document().settings();
return settings && settings->needsSiteSpecificQuirks();
}
String HTMLMediaElement::mediaPlayerDocumentHost() const
{
return document().url().host();
}
void HTMLMediaElement::mediaPlayerEnterFullscreen()
{
enterFullscreen();
}
void HTMLMediaElement::mediaPlayerExitFullscreen()
{
exitFullscreen();
}
bool HTMLMediaElement::mediaPlayerIsFullscreen() const
{
return isFullscreen();
}
bool HTMLMediaElement::mediaPlayerIsFullscreenPermitted() const
{
return m_mediaSession->fullscreenPermitted(*this);
}
bool HTMLMediaElement::mediaPlayerIsVideo() const
{
return isVideo();
}
LayoutRect HTMLMediaElement::mediaPlayerContentBoxRect() const
{
if (renderer())
return renderer()->enclosingBox().contentBoxRect();
return LayoutRect();
}
void HTMLMediaElement::mediaPlayerSetSize(const IntSize& size)
{
setIntegralAttribute(widthAttr, size.width());
setIntegralAttribute(heightAttr, size.height());
}
void HTMLMediaElement::mediaPlayerPause()
{
pause();
}
void HTMLMediaElement::mediaPlayerPlay()
{
play();
}
bool HTMLMediaElement::mediaPlayerPlatformVolumeConfigurationRequired() const
{
return !m_volumeInitialized;
}
bool HTMLMediaElement::mediaPlayerIsPaused() const
{
return paused();
}
bool HTMLMediaElement::mediaPlayerIsLooping() const
{
return loop();
}
CachedResourceLoader* HTMLMediaElement::mediaPlayerCachedResourceLoader()
{
return document().cachedResourceLoader();
}
bool HTMLMediaElement::mediaPlayerShouldWaitForResponseToAuthenticationChallenge(const AuthenticationChallenge& challenge)
{
Frame* frame = document().frame();
if (!frame)
return false;
Page* page = frame->page();
if (!page)
return false;
ResourceRequest request(m_currentSrc);
ResourceLoadNotifier& notifier = frame->loader().notifier();
DocumentLoader* documentLoader = document().loader();
unsigned long identifier = page->progress().createUniqueIdentifier();
notifier.assignIdentifierToInitialRequest(identifier, documentLoader, request);
notifier.didReceiveAuthenticationChallenge(identifier, documentLoader, challenge);
return true;
}
String HTMLMediaElement::mediaPlayerSourceApplicationIdentifier() const
{
if (Frame* frame = document().frame()) {
if (NetworkingContext* networkingContext = frame->loader().networkingContext())
return networkingContext->sourceApplicationIdentifier();
}
return emptyString();
}
#if PLATFORM(IOS)
String HTMLMediaElement::mediaPlayerNetworkInterfaceName() const
{
Settings* settings = document().settings();
if (!settings)
return emptyString();
return settings->networkInterfaceName();
}
bool HTMLMediaElement::mediaPlayerGetRawCookies(const URL& url, Vector<Cookie>& cookies) const
{
return getRawCookies(&document(), url, cookies);
}
#endif
void HTMLMediaElement::removeBehaviorsRestrictionsAfterFirstUserGesture()
{
m_mediaSession->removeBehaviorRestriction(HTMLMediaSession::RequireUserGestureForLoad);
m_mediaSession->removeBehaviorRestriction(HTMLMediaSession::RequireUserGestureForRateChange);
m_mediaSession->removeBehaviorRestriction(HTMLMediaSession::RequireUserGestureForFullscreen);
#if ENABLE(IOS_AIRPLAY)
m_mediaSession->removeBehaviorRestriction(HTMLMediaSession::RequireUserGestureToShowPlaybackTargetPicker);
#endif
}
#if ENABLE(MEDIA_SOURCE)
RefPtr<VideoPlaybackQuality> HTMLMediaElement::getVideoPlaybackQuality()
{
#if ENABLE(WEB_TIMING)
DOMWindow* domWindow = document().domWindow();
Performance* performance = domWindow ? domWindow->performance() : nullptr;
double now = performance ? performance->now() : 0;
#else
DocumentLoader* loader = document().loader();
double now = loader ? 1000.0 * loader->timing()->monotonicTimeToZeroBasedDocumentTime(monotonicallyIncreasingTime()) : 0;
#endif
if (!m_player)
return VideoPlaybackQuality::create(now, 0, 0, 0, 0);
return VideoPlaybackQuality::create(now,
m_droppedVideoFrames + m_player->totalVideoFrames(),
m_droppedVideoFrames + m_player->droppedVideoFrames(),
m_player->corruptedVideoFrames(),
m_player->totalFrameDelay().toDouble());
}
#endif
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
DOMWrapperWorld& HTMLMediaElement::ensureIsolatedWorld()
{
if (!m_isolatedWorld)
m_isolatedWorld = DOMWrapperWorld::create(JSDOMWindow::commonVM());
return *m_isolatedWorld;
}
bool HTMLMediaElement::ensureMediaControlsInjectedScript()
{
LOG(Media, "HTMLMediaElement::ensureMediaControlsInjectedScript(%p)", this);
Page* page = document().page();
if (!page)
return false;
String mediaControlsScript = RenderTheme::themeForPage(page)->mediaControlsScript();
if (!mediaControlsScript.length())
return false;
DOMWrapperWorld& world = ensureIsolatedWorld();
ScriptController& scriptController = page->mainFrame().script();
JSDOMGlobalObject* globalObject = JSC::jsCast<JSDOMGlobalObject*>(scriptController.globalObject(world));
JSC::ExecState* exec = globalObject->globalExec();
JSC::JSLockHolder lock(exec);
JSC::JSValue functionValue = globalObject->get(exec, JSC::Identifier(exec, "createControls"));
if (functionValue.isFunction())
return true;
#ifndef NDEBUG
// Setting a scriptURL allows the source to be debuggable in the inspector.
URL scriptURL = URL(ParsedURLString, ASCIILiteral("mediaControlsScript"));
#else
URL scriptURL;
#endif
scriptController.evaluateInWorld(ScriptSourceCode(mediaControlsScript, scriptURL), world);
if (exec->hadException()) {
exec->clearException();
return false;
}
return true;
}
static void setPageScaleFactorProperty(JSC::ExecState* exec, JSC::JSValue controllerValue, float pageScaleFactor)
{
JSC::PutPropertySlot propertySlot(controllerValue);
JSC::JSObject* controllerObject = controllerValue.toObject(exec);
controllerObject->methodTable()->put(controllerObject, exec, JSC::Identifier(exec, "pageScaleFactor"), JSC::jsNumber(pageScaleFactor), propertySlot);
}
void HTMLMediaElement::didAddUserAgentShadowRoot(ShadowRoot* root)
{
LOG(Media, "HTMLMediaElement::didAddUserAgentShadowRoot(%p)", this);
Page* page = document().page();
if (!page)
return;
DOMWrapperWorld& world = ensureIsolatedWorld();
if (!ensureMediaControlsInjectedScript())
return;
ScriptController& scriptController = page->mainFrame().script();
JSDOMGlobalObject* globalObject = JSC::jsCast<JSDOMGlobalObject*>(scriptController.globalObject(world));
JSC::ExecState* exec = globalObject->globalExec();
JSC::JSLockHolder lock(exec);
// The media controls script must provide a method with the following details.
// Name: createControls
// Parameters:
// 1. The ShadowRoot element that will hold the controls.
// 2. This object (and HTMLMediaElement).
// 3. The MediaControlsHost object.
// Return value:
// A reference to the created media controller instance.
JSC::JSValue functionValue = globalObject->get(exec, JSC::Identifier(exec, "createControls"));
if (functionValue.isUndefinedOrNull())
return;
if (!m_mediaControlsHost)
m_mediaControlsHost = MediaControlsHost::create(this);
auto mediaJSWrapper = toJS(exec, globalObject, this);
auto mediaControlsHostJSWrapper = toJS(exec, globalObject, m_mediaControlsHost.get());
JSC::MarkedArgumentBuffer argList;
argList.append(toJS(exec, globalObject, root));
argList.append(mediaJSWrapper);
argList.append(mediaControlsHostJSWrapper);
JSC::JSObject* function = functionValue.toObject(exec);
JSC::CallData callData;
JSC::CallType callType = function->methodTable()->getCallData(function, callData);
if (callType == JSC::CallTypeNone)
return;
JSC::JSValue controllerValue = JSC::call(exec, function, callType, callData, globalObject, argList);
JSC::JSObject* controllerObject = JSC::jsDynamicCast<JSC::JSObject*>(controllerValue);
if (!controllerObject)
return;
// Connect the Media, MediaControllerHost, and Controller so the GC knows about their relationship
JSC::JSObject* mediaJSWrapperObject = mediaJSWrapper.toObject(exec);
JSC::Identifier controlsHost(&exec->vm(), "controlsHost");
ASSERT(!mediaJSWrapperObject->hasProperty(exec, controlsHost));
mediaJSWrapperObject->putDirect(exec->vm(), controlsHost, mediaControlsHostJSWrapper, JSC::DontDelete | JSC::DontEnum | JSC::ReadOnly);
JSC::JSObject* mediaControlsHostJSWrapperObject = JSC::jsDynamicCast<JSC::JSObject*>(mediaControlsHostJSWrapper);
if (!mediaControlsHostJSWrapperObject)
return;
JSC::Identifier controller(&exec->vm(), "controller");
ASSERT(!controllerObject->hasProperty(exec, controller));
mediaControlsHostJSWrapperObject->putDirect(exec->vm(), controller, controllerValue, JSC::DontDelete | JSC::DontEnum | JSC::ReadOnly);
setPageScaleFactorProperty(exec, controllerValue, page->pageScaleFactor());
if (exec->hadException())
exec->clearException();
}
void HTMLMediaElement::setMediaControlsDependOnPageScaleFactor(bool dependsOnPageScale)
{
LOG(Media, "MediaElement::setMediaControlsDependPageScaleFactor(%p) = %s", this, boolString(dependsOnPageScale));
if (m_mediaControlsDependOnPageScaleFactor == dependsOnPageScale)
return;
m_mediaControlsDependOnPageScaleFactor = dependsOnPageScale;
if (m_mediaControlsDependOnPageScaleFactor)
document().registerForPageScaleFactorChangedCallbacks(this);
else
document().unregisterForPageScaleFactorChangedCallbacks(this);
}
void HTMLMediaElement::pageScaleFactorChanged()
{
Page* page = document().page();
if (!page)
return;
LOG(Media, "HTMLMediaElement::pageScaleFactorChanged(%p) = %f", this, page->pageScaleFactor());
DOMWrapperWorld& world = ensureIsolatedWorld();
ScriptController& scriptController = page->mainFrame().script();
JSDOMGlobalObject* globalObject = JSC::jsCast<JSDOMGlobalObject*>(scriptController.globalObject(world));
JSC::ExecState* exec = globalObject->globalExec();
JSC::JSLockHolder lock(exec);
JSC::JSValue controllerValue = controllerJSValue(*exec, *globalObject, *this);
setPageScaleFactorProperty(exec, controllerValue, page->pageScaleFactor());
}
#endif // ENABLE(MEDIA_CONTROLS_SCRIPT)
unsigned long long HTMLMediaElement::fileSize() const
{
if (m_player)
return m_player->fileSize();
return 0;
}
MediaSession::MediaType HTMLMediaElement::mediaType() const
{
if (m_player && m_readyState >= HAVE_METADATA)
return hasVideo() ? MediaSession::Video : MediaSession::Audio;
if (hasTagName(HTMLNames::videoTag))
return MediaSession::Video;
return MediaSession::Audio;
}
MediaSession::MediaType HTMLMediaElement::presentationType() const
{
if (hasTagName(HTMLNames::videoTag))
return MediaSession::Video;
return MediaSession::Audio;
}
#if ENABLE(MEDIA_SOURCE)
size_t HTMLMediaElement::maximumSourceBufferSize(const SourceBuffer& buffer) const
{
return m_mediaSession->maximumMediaSourceBufferSize(buffer);
}
#endif
void HTMLMediaElement::pausePlayback()
{
LOG(Media, "HTMLMediaElement::pausePlayback(%p) - paused = %s", this, boolString(paused()));
if (!paused())
pause();
}
void HTMLMediaElement::resumePlayback()
{
LOG(Media, "HTMLMediaElement::resumePlayback(%p) - paused = %s", this, boolString(paused()));
if (paused())
play();
}
String HTMLMediaElement::mediaSessionTitle() const
{
if (fastHasAttribute(titleAttr))
return fastGetAttribute(titleAttr);
return m_currentSrc;
}
void HTMLMediaElement::didReceiveRemoteControlCommand(MediaSession::RemoteControlCommandType command)
{
LOG(Media, "HTMLMediaElement::didReceiveRemoteControlCommand(%p) - %i", this, static_cast<int>(command));
switch (command) {
case MediaSession::PlayCommand:
play();
break;
case MediaSession::PauseCommand:
pause();
break;
case MediaSession::TogglePlayPauseCommand:
canPlay() ? play() : pause();
break;
case MediaSession::BeginSeekingBackwardCommand:
beginScanning(Backward);
break;
case MediaSession::BeginSeekingForwardCommand:
beginScanning(Forward);
break;
case MediaSession::EndSeekingBackwardCommand:
case MediaSession::EndSeekingForwardCommand:
endScanning();
break;
default:
{ } // Do nothing
}
}
bool HTMLMediaElement::overrideBackgroundPlaybackRestriction() const
{
#if ENABLE(IOS_AIRPLAY)
if (m_player && m_player->isCurrentPlaybackTargetWireless())
return true;
#endif
return false;
}
bool HTMLMediaElement::doesHaveAttribute(const AtomicString& attribute, AtomicString* value) const
{
QualifiedName attributeName(nullAtom, attribute, nullAtom);
AtomicString elementValue = fastGetAttribute(attributeName);
if (elementValue.isNull())
return false;
if (Settings* settings = document().settings()) {
if (attributeName == HTMLNames::x_itunes_inherit_uri_query_componentAttr && !settings->enableInheritURIQueryComponent())
return false;
}
if (value)
*value = elementValue;
return true;
}
void HTMLMediaElement::setShouldBufferData(bool shouldBuffer)
{
if (m_player)
return m_player->setShouldBufferData(shouldBuffer);
}
}
#endif