Google Git
Sign in
webkit / WebKit / 13a73330afed763af37caf5dcd4ca9bb2130771a / . / Source / WebCore / html / HTMLMediaElement.cpp
blob: f3b16b597caa97311bca3cd373f5db8f3b561294 [file] [log] [blame]
/*
* Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012, 2013 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 COMPUTER, 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 COMPUTER, 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 "Chrome.h"
#include "ChromeClient.h"
#include "ClientRect.h"
#include "ClientRectList.h"
#include "ContentSecurityPolicy.h"
#include "ContentType.h"
#include "CSSPropertyNames.h"
#include "CSSValueKeywords.h"
#include "DiagnosticLoggingKeys.h"
#include "DocumentLoader.h"
#include "ElementIterator.h"
#include "Event.h"
#include "EventNames.h"
#include "ExceptionCode.h"
#include "ExceptionCodePlaceholder.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "FrameView.h"
#include "HTMLDocument.h"
#include "HTMLNames.h"
#include "HTMLSourceElement.h"
#include "HTMLVideoElement.h"
#include "JSHTMLMediaElement.h"
#include "Language.h"
#include "Logging.h"
#include "MainFrame.h"
#include "MediaController.h"
#include "MediaControls.h"
#include "MediaDocument.h"
#include "MediaError.h"
#include "MediaFragmentURIParser.h"
#include "MediaKeyError.h"
#include "MediaKeyEvent.h"
#include "MediaList.h"
#include "MediaPlayer.h"
#include "MediaQueryEvaluator.h"
#include "MouseEvent.h"
#include "MIMETypeRegistry.h"
#include "Page.h"
#include "PageActivityAssertionToken.h"
#include "PageGroup.h"
#include "RenderTheme.h"
#include "RenderVideo.h"
#include "RenderView.h"
#include "ScriptController.h"
#include "ScriptSourceCode.h"
#include "SecurityPolicy.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 USE(ACCELERATED_COMPOSITING)
#include "RenderLayerCompositor.h"
#endif
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
#include "RenderEmbeddedObject.h"
#include "Widget.h"
#endif
#if ENABLE(VIDEO_TRACK)
#include "AudioTrackList.h"
#include "AudioTrackPrivate.h"
#include "CaptionUserPreferences.h"
#include "HTMLTrackElement.h"
#include "InbandGenericTextTrack.h"
#include "InbandTextTrack.h"
#include "InbandTextTrackPrivate.h"
#include "InbandWebVTTTextTrack.h"
#include "RuntimeEnabledFeatures.h"
#include "TextTrackCueList.h"
#include "TextTrackList.h"
#include "VideoTrackList.h"
#include "VideoTrackPrivate.h"
#endif
#if ENABLE(WEB_AUDIO)
#include "AudioSourceProvider.h"
#include "MediaElementAudioSourceNode.h"
#endif
#if PLATFORM(MAC)
#include "DisplaySleepDisabler.h"
#endif
#if ENABLE(MEDIA_SOURCE)
#include "HTMLMediaSource.h"
#endif
#if ENABLE(MEDIA_STREAM)
#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 USE(AUDIO_SESSION)
#include "AudioSessionManager.h"
#endif
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
#include "JSMediaControlsHost.h"
#include "MediaControlsHost.h"
#include "ScriptObject.h"
#include "UserAgentScripts.h"
#endif
namespace WebCore {
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()
{
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_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_lastSeekTime(0)
, m_previousProgressTime(std::numeric_limits<double>::max())
, m_clockTimeAtLastUpdateEvent(0)
, m_lastTimeUpdateEventMovieTime(std::numeric_limits<double>::max())
, m_loadState(WaitingForSource)
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
, m_proxyWidget(0)
#endif
, m_restrictions(RequireUserGestureForFullscreenRestriction | RequirePageConsentToLoadMediaRestriction)
, m_preload(MediaPlayer::Auto)
, m_displayMode(Unknown)
, m_processingMediaPlayerCallback(0)
, m_cachedTime(MediaPlayer::invalidTime())
, m_clockTimeAtLastCachedTimeUpdate(0)
, m_minimumClockTimeToUpdateCachedTime(0)
, m_fragmentStartTime(MediaPlayer::invalidTime())
, m_fragmentEndTime(MediaPlayer::invalidTime())
, m_pendingActionFlags(0)
, m_playing(false)
, m_isWaitingUntilMediaCanStart(false)
, m_shouldDelayLoadEvent(false)
, m_haveFiredLoadedData(false)
, m_inActiveDocument(true)
, m_autoplaying(true)
, m_muted(false)
, m_paused(true)
, m_seeking(false)
, m_sentStalledEvent(false)
, m_sentEndEvent(false)
, m_pausedInternal(false)
, m_sendProgressEvents(true)
, m_isFullscreen(false)
, m_closedCaptionsVisible(false)
, m_webkitLegacyClosedCaptionOverride(false)
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
, m_needWidgetUpdate(false)
#endif
, m_dispatchingCanPlayEvent(false)
, m_loadInitiatedByUserGesture(false)
, m_completelyLoaded(false)
, m_havePreparedToPlay(false)
, m_parsingInProgress(createdByParser)
#if ENABLE(PAGE_VISIBILITY_API)
, m_isDisplaySleepDisablingSuspended(document.hidden())
#endif
#if ENABLE(VIDEO_TRACK)
, m_tracksAreReady(true)
, m_haveVisibleTextTrack(false)
, m_processingPreferenceChange(false)
, m_lastTextTrackUpdateTime(-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
#if USE(AUDIO_SESSION)
, m_audioSessionManagerToken(AudioSessionManagerToken::create(tagName == videoTag ? AudioSessionManager::Video : AudioSessionManager::Audio))
#endif
, m_reportedExtraMemoryCost(0)
{
LOG(Media, "HTMLMediaElement::HTMLMediaElement");
setHasCustomStyleResolveCallbacks();
document.registerForMediaVolumeCallbacks(this);
document.registerForPrivateBrowsingStateChangedCallbacks(this);
#if ENABLE(PAGE_VISIBILITY_API)
document.registerForVisibilityStateChangedCallbacks(this);
#endif
if (document.settings() && document.settings()->mediaPlaybackRequiresUserGesture()) {
addBehaviorRestriction(RequireUserGestureForRateChangeRestriction);
addBehaviorRestriction(RequireUserGestureForLoadRestriction);
}
addElementToDocumentMap(*this, document);
#if ENABLE(VIDEO_TRACK)
document.registerForCaptionPreferencesChangedCallbacks(this);
if (document.page())
m_captionDisplayMode = document.page()->group().captionPreferences()->captionDisplayMode();
#endif
}
HTMLMediaElement::~HTMLMediaElement()
{
LOG(Media, "HTMLMediaElement::~HTMLMediaElement");
m_asyncEventQueue.close();
if (m_isWaitingUntilMediaCanStart)
document().removeMediaCanStartListener(this);
setShouldDelayLoadEvent(false);
document().unregisterForMediaVolumeCallbacks(this);
document().unregisterForPrivateBrowsingStateChangedCallbacks(this);
#if ENABLE(PAGE_VISIBILITY_API)
document().unregisterForVisibilityStateChangedCallbacks(this);
#endif
#if ENABLE(VIDEO_TRACK)
document().unregisterForCaptionPreferencesChangedCallbacks(this);
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 (m_mediaController)
m_mediaController->removeMediaElement(this);
#if ENABLE(MEDIA_SOURCE)
closeMediaSource();
#endif
#if ENABLE(ENCRYPTED_MEDIA_V2)
setMediaKeys(0);
#endif
removeElementFromDocumentMap(*this, document());
m_completelyLoaded = true;
if (m_player)
m_player->clearMediaPlayerClient();
}
void HTMLMediaElement::didMoveToNewDocument(Document* oldDocument)
{
if (m_isWaitingUntilMediaCanStart) {
if (oldDocument)
oldDocument->removeMediaCanStartListener(this);
document().addMediaCanStartListener(this);
}
if (m_shouldDelayLoadEvent) {
if (oldDocument)
oldDocument->decrementLoadEventDelayCount();
document().incrementLoadEventDelayCount();
}
if (oldDocument) {
oldDocument->unregisterForMediaVolumeCallbacks(this);
removeElementFromDocumentMap(*this, *oldDocument);
}
document().registerForMediaVolumeCallbacks(this);
addElementToDocumentMap(*this, 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) {
// Trigger a reload, as long as the 'src' attribute is present.
if (!value.isNull()) {
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_preload);
} 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);
else
HTMLElement::parseAttribute(name, value);
}
void HTMLMediaElement::finishParsingChildren()
{
HTMLElement::finishParsingChildren();
m_parsingInProgress = false;
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
document().updateStyleIfNeeded();
createMediaPlayerProxy();
#endif
#if ENABLE(VIDEO_TRACK)
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return;
if (descendantsOfType<HTMLTrackElement>(*this).first())
scheduleDelayedAction(ConfigureTextTracks);
#endif
}
bool HTMLMediaElement::rendererIsNeeded(const RenderStyle& style)
{
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
UNUSED_PARAM(style);
return true;
#else
return controls() && HTMLElement::rendererIsNeeded(style);
#endif
}
RenderElement* HTMLMediaElement::createRenderer(PassRef<RenderStyle> style)
{
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
// Setup the renderer if we already have a proxy widget.
RenderEmbeddedObject* mediaRenderer = new RenderEmbeddedObject(*this, std::move(style));
if (m_proxyWidget) {
mediaRenderer->setWidget(m_proxyWidget);
if (Frame* frame = document().frame())
frame->loader().client().showMediaPlayerProxyPlugin(m_proxyWidget.get());
}
return mediaRenderer;
#else
return new RenderMedia(*this, std::move(style));
#endif
}
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");
HTMLElement::insertedInto(insertionPoint);
if (insertionPoint.inDocument()) {
m_inActiveDocument = true;
if (m_networkState == NETWORK_EMPTY && !getAttribute(srcAttr).isEmpty())
scheduleDelayedAction(LoadMediaResource);
}
configureMediaControls();
return InsertionDone;
}
void HTMLMediaElement::removedFrom(ContainerNode& insertionPoint)
{
LOG(Media, "HTMLMediaElement::removedFrom");
m_inActiveDocument = false;
if (insertionPoint.inDocument()) {
configureMediaControls();
if (m_networkState > NETWORK_EMPTY)
pause();
if (m_isFullscreen)
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(!attached());
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
m_needWidgetUpdate = true;
#endif
}
void HTMLMediaElement::didAttachRenderers()
{
if (renderer())
renderer()->updateFromElement();
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
else if (m_proxyWidget) {
if (Frame* frame = document().frame())
frame->loader().client().hideMediaPlayerProxyPlugin(m_proxyWidget.get());
}
#endif
}
void HTMLMediaElement::didRecalcStyle(Style::Change)
{
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::scheduleDelayedAction(DelayedActionType actionType)
{
LOG(Media, "HTMLMediaElement::scheduleLoad");
if ((actionType & LoadMediaResource) && !(m_pendingActionFlags & LoadMediaResource)) {
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
createMediaPlayerProxy();
#endif
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 - scheduling '%s'", 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);
}
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(%s, %s, %s) -> %s", 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()");
if (userGestureRequiredForLoad() && !ScriptController::processingUserGesture())
return;
m_loadInitiatedByUserGesture = ScriptController::processingUserGesture();
if (m_loadInitiatedByUserGesture)
removeBehaviorsRestrictionsAfterFirstUserGesture();
prepareForLoad();
loadInternal();
prepareToPlay();
}
void HTMLMediaElement::prepareForLoad()
{
LOG(Media, "HTMLMediaElement::prepareForLoad");
// Perform the cleanup required for the resource load algorithm to run.
stopPeriodicTimers();
m_loadTimer.stop();
m_sentEndEvent = false;
m_sentStalledEvent = false;
m_haveFiredLoadedData = false;
m_completelyLoaded = false;
m_havePreparedToPlay = false;
m_displayMode = Unknown;
// 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
#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
createMediaPlayer();
#else
if (m_player)
m_player->cancelLoad();
else
createMediaPlayerProxy();
#endif
// 4 - If the media element's networkState is not set to NETWORK_EMPTY, then run these substeps
if (m_networkState != NETWORK_EMPTY) {
m_networkState = NETWORK_EMPTY;
m_readyState = HAVE_NOTHING;
m_readyStateMaximum = HAVE_NOTHING;
refreshCachedTime();
m_paused = true;
m_seeking = false;
invalidateCachedTime();
scheduleEvent(eventNames().emptiedEvent);
updateMediaController();
#if ENABLE(VIDEO_TRACK)
if (RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
updateActiveTextTrackCues(0);
#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();
m_lastSeekTime = 0;
// 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.
if (m_preload != MediaPlayer::None)
setShouldDelayLoadEvent(true);
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.
Page* page = document().page();
if (pageConsentRequiredForLoad() && page && !page->canStartMedia()) {
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 in the the background.
removeBehaviorRestriction(RequirePageConsentToLoadMediaRestriction);
#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");
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, nothing to load");
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, empty 'src'");
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, using 'src' attribute url");
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;
}
#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
// Recreate the media player for the new url
createMediaPlayer();
#endif
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(%s, %s, %s)", 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 - will load from app cache -> %s", urlForLoggingMedia(url).utf8().data());
}
LOG(Media, "HTMLMediaElement::loadResource - m_currentSrc -> %s", urlForLoggingMedia(m_currentSrc).utf8().data());
#if ENABLE(MEDIA_STREAM)
if (MediaStreamRegistry::registry().lookupMediaStreamDescriptor(url.string()))
removeBehaviorRestriction(RequireUserGestureForRateChangeRestriction);
#endif
if (m_sendProgressEvents)
startProgressEventTimer();
Settings* settings = document().settings();
bool privateMode = !settings || settings->privateBrowsingEnabled();
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_preload);
m_player->setPreservesPitch(m_webkitPreservesPitch);
if (fastHasAttribute(mutedAttr))
m_muted = true;
updateVolume();
#if ENABLE(MEDIA_SOURCE)
ASSERT(!m_mediaSource);
if (url.protocolIs(mediaSourceBlobProtocol))
m_mediaSource = HTMLMediaSource::lookup(url.string());
if (m_mediaSource) {
if (m_mediaSource->attachToElement())
m_player->load(url, contentType, m_mediaSource);
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);
// 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<double, TextTrackCue*>& a,
const std::pair<double, 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 < 0;
// 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(double 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");
// 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));
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.
double 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 >= 0 && m_lastSeekTime < movieTime) {
CueList potentiallySkippedCues =
m_cueTree.allOverlaps(m_cueTree.createInterval(lastTime, movieTime));
for (size_t i = 0; i < potentiallySkippedCues.size(); ++i) {
double cueStartTime = potentiallySkippedCues[i].low();
double 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_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) {
currentCues[i].data()->updateDisplayTree(movieTime);
if (!currentCues[i].data()->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<double, 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()->startTime(),
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()->startTime() < missedCues[i].data()->endTime())
eventTasks.append(std::make_pair(missedCues[i].data()->endTime(),
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()->endTime(),
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()->startTime(),
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->startTime())
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*)
{
// We will want to change the media controls here once they exist
}
void HTMLMediaElement::textTrackModeChanged(TextTrack* track)
{
bool trackIsLoaded = true;
if (track->trackType() == TextTrack::TrackElement) {
trackIsLoaded = false;
auto trackChildren = childrenOfType<HTMLTrackElement>(*this);
for (auto trackElement = trackChildren.begin(), end = trackChildren.end(); trackElement != end; ++trackElement) {
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);
}
void HTMLMediaElement::videoTrackSelectedChanged(VideoTrack*)
{
// We will want to change the media controls here once they exist
}
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(currentTime());
}
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> cue)
{
if (track->mode() == TextTrack::disabledKeyword())
return;
// Negative duration cues need be treated in the interval tree as
// zero-length cues.
double endTime = std::max(cue->startTime(), cue->endTime());
CueInterval interval = m_cueTree.createInterval(cue->startTime(), endTime, cue.get());
if (!m_cueTree.contains(interval))
m_cueTree.add(interval);
updateActiveTextTrackCues(currentTime());
}
void HTMLMediaElement::textTrackRemoveCue(TextTrack*, PassRefPtr<TextTrackCue> cue)
{
// Negative duration cues need to be treated in the interval tree as
// zero-length cues.
double endTime = std::max(cue->startTime(), cue->endTime());
CueInterval interval = m_cueTree.createInterval(cue->startTime(), endTime, cue.get());
m_cueTree.remove(interval);
size_t index = m_currentlyActiveCues.find(interval);
if (index != notFound) {
cue->setIsActive(false);
m_currentlyActiveCues.remove(index);
}
cue->removeDisplayTree();
updateActiveTextTrackCues(currentTime());
}
#endif
bool HTMLMediaElement::isSafeToLoadURL(const URL& url, InvalidURLAction actionIfInvalid)
{
if (!url.isValid()) {
LOG(Media, "HTMLMediaElement::isSafeToLoadURL(%s) -> FALSE because url is invalid", 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(%s) -> FALSE rejected by SecurityOrigin", urlForLoggingMedia(url).utf8().data());
return false;
}
if (!document().contentSecurityPolicy()->allowMediaFromSource(url)) {
LOG(Media, "HTMLMediaElement::isSafeToLoadURL(%s) -> rejected by Content Security Policy", 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");
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");
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.
// 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::mediaEngineError(PassRefPtr<MediaError> err)
{
LOG(Media, "HTMLMediaElement::mediaEngineError(%d)", static_cast<int>(err->code()));
// 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.
m_error = err;
// 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;
}
void HTMLMediaElement::cancelPendingEventsAndCallbacks()
{
LOG(Media, "HTMLMediaElement::cancelPendingEventsAndCallbacks");
m_asyncEventQueue.cancelAllEvents();
auto sourceChildren = childrenOfType<HTMLSourceElement>(*this);
for (auto source = sourceChildren.begin(), end = sourceChildren.end(); source != end; ++source)
source->cancelPendingErrorEvent();
}
Document* HTMLMediaElement::mediaPlayerOwningDocument()
{
return &document();
}
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) {
if (m_currentSourceNode)
m_currentSourceNode->scheduleErrorEvent();
else
LOG(Media, "HTMLMediaElement::setNetworkState - error event not sent, <source> was removed");
if (havePotentialSourceChild()) {
LOG(Media, "HTMLMediaElement::setNetworkState - scheduling next <source>");
scheduleNextSourceChild();
} else {
LOG(Media, "HTMLMediaElement::setNetworkState - no more <source> elements, waiting");
waitForSourceChange();
}
return;
}
if (error == MediaPlayer::NetworkError && m_readyState >= HAVE_METADATA)
mediaEngineError(MediaError::create(MediaError::MEDIA_ERR_NETWORK));
else if (error == MediaPlayer::DecodeError)
mediaEngineError(MediaError::create(MediaError::MEDIA_ERR_DECODE));
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(%d) - current state is %d", 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(%d) - current state is %d,", 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
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) && !userGestureRequiredForRateChange()) {
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(currentTime());
#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(%f)", timeDelta);
setCurrentTime(std::max(currentTime() - timeDelta, minTimeSeekable()), IGNORE_EXCEPTION);
}
void HTMLMediaElement::returnToRealtime()
{
LOG(Media, "HTMLMediaElement::returnToRealtime");
setCurrentTime(maxTimeSeekable(), IGNORE_EXCEPTION);
}
void HTMLMediaElement::addPlayedRange(double start, double end)
{
LOG(Media, "HTMLMediaElement::addPlayedRange(%f, %f)", start, end);
if (!m_playedTimeRanges)
m_playedTimeRanges = TimeRanges::create();
m_playedTimeRanges->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::seek(double time, ExceptionCode& ec)
{
LOG(Media, "HTMLMediaElement::seek(%f)", time);
// 4.8.9.9 Seeking
// 1 - If the media element's readyState is HAVE_NOTHING, then raise an INVALID_STATE_ERR exception.
if (m_readyState == HAVE_NOTHING || !m_player) {
ec = INVALID_STATE_ERR;
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();
double now = currentTime();
// 2 - 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.
// Nothing specific to be done here.
// 3 - 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;
// 5 - 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, duration());
// 6 - If the new playback position is less than the earliest possible position, let it be that position instead.
double 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
double mediaTime = m_player->mediaTimeForTimeValue(time);
if (time != mediaTime)
LOG(Media, "HTMLMediaElement::seek(%f) - media timeline equivalent is %f", time, mediaTime);
#endif
time = m_player->mediaTimeForTimeValue(time);
// 7 - 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->nearest(time);
if (m_playing) {
if (m_lastSeekTime < now)
addPlayedRange(m_lastSeekTime, now);
}
m_lastSeekTime = time;
m_sentEndEvent = false;
// 8 - Set the current playback position to the given new playback position
m_player->seek(time);
// 9 - Queue a task to fire a simple event named seeking at the element.
scheduleEvent(eventNames().seekingEvent);
// 10 - Queue a task to fire a simple event named timeupdate at the element.
scheduleTimeupdateEvent(false);
// 11-15 are handled, if necessary, when the engine signals a readystate change.
}
void HTMLMediaElement::finishSeek()
{
LOG(Media, "HTMLMediaElement::finishSeek");
// 4.8.10.9 Seeking step 14
m_seeking = false;
// 4.8.10.9 Seeking step 15
scheduleEvent(eventNames().seekedEvent);
setDisplayMode(Video);
}
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();
m_clockTimeAtLastCachedTimeUpdate = monotonicallyIncreasingTime();
}
void HTMLMediaElement::invalidateCachedTime()
{
LOG(Media, "HTMLMediaElement::invalidateCachedTime");
// 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 = MediaPlayer::invalidTime();
}
// playback state
double HTMLMediaElement::currentTime() const
{
#if LOG_CACHED_TIME_WARNINGS
static const double minCachedDeltaForWarning = 0.01;
#endif
if (!m_player)
return 0;
if (m_seeking) {
LOG(Media, "HTMLMediaElement::currentTime - seeking, returning %f", m_lastSeekTime);
return m_lastSeekTime;
}
if (m_cachedTime != MediaPlayer::invalidTime() && m_paused) {
#if LOG_CACHED_TIME_WARNINGS
double delta = m_cachedTime - m_player->currentTime();
if (delta > minCachedDeltaForWarning)
LOG(Media, "HTMLMediaElement::currentTime - WARNING, cached time is %f seconds off of media time when paused", delta);
#endif
return m_cachedTime;
}
// Is it too soon use a cached time?
double now = monotonicallyIncreasingTime();
double maximumDurationToCacheMediaTime = m_player->maximumDurationToCacheMediaTime();
if (maximumDurationToCacheMediaTime && m_cachedTime != MediaPlayer::invalidTime() && !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) {
double adjustedCacheTime = m_cachedTime + (m_playbackRate * clockDelta);
#if LOG_CACHED_TIME_WARNINGS
double delta = adjustedCacheTime - m_player->currentTime();
if (delta > minCachedDeltaForWarning)
LOG(Media, "HTMLMediaElement::currentTime - WARNING, cached time is %f seconds off of media time when playing", delta);
#endif
return adjustedCacheTime;
}
}
#if LOG_CACHED_TIME_WARNINGS
if (maximumDurationToCacheMediaTime && now > m_minimumClockTimeToUpdateCachedTime && m_cachedTime != MediaPlayer::invalidTime()) {
double clockDelta = now - m_clockTimeAtLastCachedTimeUpdate;
double delta = m_cachedTime + (m_playbackRate * clockDelta) - m_player->currentTime();
LOG(Media, "HTMLMediaElement::currentTime - cached time was %f seconds off of media time when it expired", delta);
}
#endif
refreshCachedTime();
return m_cachedTime;
}
void HTMLMediaElement::setCurrentTime(double time, ExceptionCode& ec)
{
if (m_mediaController) {
ec = INVALID_STATE_ERR;
return;
}
seek(time, ec);
}
double HTMLMediaElement::initialTime() const
{
if (m_fragmentStartTime != MediaPlayer::invalidTime())
return m_fragmentStartTime;
if (!m_player)
return 0;
return m_player->initialTime();
}
double HTMLMediaElement::duration() const
{
if (m_player && m_readyState >= HAVE_METADATA)
return m_player->duration();
return std::numeric_limits<double>::quiet_NaN();
}
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::playbackRate() const
{
return m_playbackRate;
}
void HTMLMediaElement::setPlaybackRate(double rate)
{
LOG(Media, "HTMLMediaElement::setPlaybackRate(%f)", rate);
if (m_playbackRate != rate) {
m_playbackRate = rate;
invalidateCachedTime();
scheduleEvent(eventNames().ratechangeEvent);
}
if (m_player && potentiallyPlaying() && m_player->rate() != rate && !m_mediaController)
m_player->setRate(rate);
}
void HTMLMediaElement::updatePlaybackRate()
{
double effectiveRate = m_mediaController ? m_mediaController->playbackRate() : m_playbackRate;
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(%s)", 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() && m_playbackRate > 0;
}
bool HTMLMediaElement::autoplay() const
{
return fastHasAttribute(autoplayAttr);
}
void HTMLMediaElement::setAutoplay(bool b)
{
LOG(Media, "HTMLMediaElement::setAutoplay(%s)", boolString(b));
setBooleanAttribute(autoplayAttr, b);
}
String HTMLMediaElement::preload() const
{
switch (m_preload) {
case MediaPlayer::None:
return ASCIILiteral("none");
break;
case MediaPlayer::MetaData:
return ASCIILiteral("metadata");
break;
case MediaPlayer::Auto:
return ASCIILiteral("auto");
break;
}
ASSERT_NOT_REACHED();
return String();
}
void HTMLMediaElement::setPreload(const String& preload)
{
LOG(Media, "HTMLMediaElement::setPreload(%s)", preload.utf8().data());
setAttribute(preloadAttr, preload);
}
void HTMLMediaElement::play()
{
LOG(Media, "HTMLMediaElement::play()");
if (userGestureRequiredForRateChange() && !ScriptController::processingUserGesture())
return;
if (ScriptController::processingUserGesture())
removeBehaviorsRestrictionsAfterFirstUserGesture();
Settings* settings = document().settings();
if (settings && settings->needsSiteSpecificQuirks() && m_dispatchingCanPlayEvent && !m_loadInitiatedByUserGesture) {
// It should be impossible to be processing the canplay event while handling a user gesture
// since it is dispatched asynchronously.
ASSERT(!ScriptController::processingUserGesture());
String host = document().baseURL().host();
if (host.endsWith(".npr.org", false) || equalIgnoringCase(host, "npr.org"))
return;
}
playInternal();
}
void HTMLMediaElement::playInternal()
{
LOG(Media, "HTMLMediaElement::playInternal");
// 4.8.10.9. Playing the media resource
if (!m_player || m_networkState == NETWORK_EMPTY)
scheduleDelayedAction(LoadMediaResource);
if (endedPlayback())
seek(0, IGNORE_EXCEPTION);
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()");
if (userGestureRequiredForRateChange() && !ScriptController::processingUserGesture())
return;
pauseInternal();
}
void HTMLMediaElement::pauseInternal()
{
LOG(Media, "HTMLMediaElement::pauseInternal");
// 4.8.10.9. Playing the media resource
if (!m_player || m_networkState == NETWORK_EMPTY)
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(JSMessageSource, WarningMessageLevel, "'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(JSMessageSource, WarningMessageLevel, "'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(%s)", 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() && document().page() && document().page()->chrome().requiresFullscreenForVideoPlayback())
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(%s)", boolString(b));
setBooleanAttribute(controlsAttr, b);
}
double HTMLMediaElement::volume() const
{
return m_volume;
}
void HTMLMediaElement::setVolume(double vol, ExceptionCode& ec)
{
LOG(Media, "HTMLMediaElement::setVolume(%f)", vol);
if (vol < 0.0f || vol > 1.0f) {
ec = INDEX_SIZE_ERR;
return;
}
if (m_volume != vol) {
m_volume = vol;
m_volumeInitialized = true;
updateVolume();
scheduleEvent(eventNames().volumechangeEvent);
}
}
bool HTMLMediaElement::muted() const
{
return m_muted;
}
void HTMLMediaElement::setMuted(bool muted)
{
LOG(Media, "HTMLMediaElement::setMuted(%s)", boolString(muted));
if (m_muted != muted) {
m_muted = muted;
// 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);
}
}
void HTMLMediaElement::togglePlayState()
{
LOG(Media, "HTMLMediaElement::togglePlayState - canPlay() is %s", 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 - paused() is %s", 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 - m_pausedInternal is %s", boolString(m_pausedInternal));
if (m_pausedInternal)
setPausedInternal(false);
}
// 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 != MediaPlayer::invalidTime() && currentTime() >= m_fragmentEndTime && m_playbackRate > 0) {
m_fragmentEndTime = MediaPlayer::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 (!m_playbackRate)
return;
if (!m_paused && hasMediaControls())
mediaControls()->playbackProgressed();
#if ENABLE(VIDEO_TRACK)
if (RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
updateActiveTextTrackCues(currentTime());
#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
double movieTime = currentTime();
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;
double duration = m_player->duration();
if (!duration || std::isinf(duration))
return 0;
double buffered = 0;
RefPtr<TimeRanges> timeRanges = m_player->buffered();
for (unsigned i = 0; i < timeRanges->length(); ++i) {
double start = timeRanges->start(i, IGNORE_EXCEPTION);
double end = timeRanges->end(i, IGNORE_EXCEPTION);
buffered += end - start;
}
return buffered / duration;
}
#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);
// 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)
{
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return;
TrackDisplayUpdateScope scope(this);
TextTrackCueList* cues = track->cues();
if (cues)
textTrackRemoveCues(track, cues);
track->clearClient();
m_textTracks->remove(track);
closeCaptionTracksChanged();
}
void HTMLMediaElement::removeVideoTrack(VideoTrack* track)
{
if (!RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
return;
m_videoTracks->remove(track);
}
void HTMLMediaElement::removeAllInbandTracks()
{
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);
}
}
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, 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 - 'src' is %s", 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");
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;
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 - '%s' track with language '%s' has score %i", 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) {
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());
m_processingPreferenceChange = false;
}
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());
}
}
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());
// Set m_captionDisplayMode here so we don't reconfigure again when the preference changed notification comes through.
m_captionDisplayMode = displayMode;
}
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");
#endif
if (!m_nextChildNodeToConsider) {
#if !LOG_DISABLED
if (shouldLog)
LOG(Media, "HTMLMediaElement::selectNextSourceChild -> 0x0000, \"\"");
#endif
return URL();
}
URL mediaURL;
HTMLSourceElement* source = 0;
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 = static_cast<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 - 'src' is %s", 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 - 'media' is %s", 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 - 'type' is '%s' - key system is '%s'", 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 (!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 : 'beforeload' removed current element");
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, %s", m_currentSourceNode.get(), canUseSourceElement ? urlForLoggingMedia(mediaURL).utf8().data() : "");
#endif
return canUseSourceElement ? mediaURL : URL();
}
void HTMLMediaElement::sourceWasAdded(HTMLSourceElement* source)
{
LOG(Media, "HTMLMediaElement::sourceWasAdded(%p)", source);
#if !LOG_DISABLED
if (source->hasTagName(sourceTag)) {
URL url = source->getNonEmptyURLAttribute(srcAttr);
LOG(Media, "HTMLMediaElement::sourceWasAdded - 'src' is %s", 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 - <source> inserted immediately after current source");
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)", source);
#if !LOG_DISABLED
if (source->hasTagName(sourceTag)) {
URL url = source->getNonEmptyURLAttribute(srcAttr);
LOG(Media, "HTMLMediaElement::sourceWasRemoved - 'src' is %s", 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 - m_nextChildNodeToConsider set to %p", 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 - m_currentSourceNode set to 0");
}
}
void HTMLMediaElement::mediaPlayerTimeChanged(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerTimeChanged");
#if ENABLE(VIDEO_TRACK)
if (RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled())
updateActiveTextTrackCues(currentTime());
#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.
scheduleTimeupdateEvent(false);
double now = currentTime();
double dur = duration();
// When the current playback position reaches the end of the media resource when the direction of
// playback is forwards, then the user agent must follow these steps:
if (!std::isnan(dur) && dur && now >= dur && m_playbackRate > 0) {
// If the media element has a loop attribute specified and does not have a current media controller,
if (loop() && !m_mediaController) {
m_sentEndEvent = false;
// then seek to the earliest possible position of the media resource and abort these steps.
seek(0, IGNORE_EXCEPTION);
} else {
// If the media element does not have a current media controller, and the media element
// has still ended playback, and the direction of playback is still forwards, 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);
}
// 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;
updatePlayState();
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerVolumeChanged(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerVolumeChanged");
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");
beginProcessingMediaPlayerCallback();
if (m_player)
setMuted(m_player->muted());
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerDurationChanged(MediaPlayer* player)
{
LOG(Media, "HTMLMediaElement::mediaPlayerDurationChanged");
beginProcessingMediaPlayerCallback();
scheduleEvent(eventNames().durationchangeEvent);
mediaPlayerCharacteristicChanged(player);
double now = currentTime();
double dur = duration();
if (now > dur)
seek(dur, IGNORE_EXCEPTION);
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerRateChanged(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerRateChanged");
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");
if (!m_player || m_pausedInternal)
return;
beginProcessingMediaPlayerCallback();
if (m_player->paused())
pauseInternal();
else
playInternal();
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerSawUnsupportedTracks(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerSawUnsupportedTracks");
// 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");
// 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");
beginProcessingMediaPlayerCallback();
if (renderer())
renderer()->updateFromElement();
endProcessingMediaPlayerCallback();
}
#if USE(ACCELERATED_COMPOSITING)
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");
// Kick off a fake recalcStyle that will update the compositing tree.
setNeedsStyleRecalc(SyntheticStyleChange);
}
#endif
#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");
beginProcessingMediaPlayerCallback();
if (renderer())
renderer()->updateFromElement();
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerFirstVideoFrameAvailable(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerFirstVideoFrameAvailable");
beginProcessingMediaPlayerCallback();
if (displayMode() == PosterWaitingForVideo) {
setDisplayMode(Video);
#if USE(ACCELERATED_COMPOSITING)
mediaPlayerRenderingModeChanged(m_player.get());
#endif
}
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerCharacteristicChanged(MediaPlayer*)
{
LOG(Media, "HTMLMediaElement::mediaPlayerCharacteristicChanged");
beginProcessingMediaPlayerCallback();
#if ENABLE(VIDEO_TRACK)
if (m_captionDisplayMode == CaptionUserPreferences::Automatic && m_subtitleTrackLanguage != m_player->languageOfPrimaryAudioTrack())
markCaptionAndSubtitleTracksAsUnconfigured(AfterDelay);
#endif
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 m_mediaSource->buffered();
#endif
return m_player->buffered();
}
PassRefPtr<TimeRanges> HTMLMediaElement::played()
{
if (m_playing) {
double time = currentTime();
if (time > m_lastSeekTime)
addPlayedRange(m_lastSeekTime, time);
}
if (!m_playedTimeRanges)
m_playedTimeRanges = TimeRanges::create();
return m_playedTimeRanges->copy();
}
PassRefPtr<TimeRanges> HTMLMediaElement::seekable() const
{
return m_player ? m_player->seekable() : TimeRanges::create();
}
bool HTMLMediaElement::potentiallyPlaying() const
{
// "pausedToBuffer" means the media engine's rate is 0, but only because it had to stop playing
// when it ran out of buffered data. A movie is this state is "potentially playing", modulo the
// checks in couldPlayIfEnoughData().
bool pausedToBuffer = m_readyStateMaximum >= HAVE_FUTURE_DATA && m_readyState < HAVE_FUTURE_DATA;
return (pausedToBuffer || m_readyState >= HAVE_FUTURE_DATA) && couldPlayIfEnoughData() && !isBlockedOnMediaController();
}
bool HTMLMediaElement::couldPlayIfEnoughData() const
{
return !paused() && !endedPlayback() && !stoppedDueToErrors() && !pausedForUserInteraction();
}
bool HTMLMediaElement::endedPlayback() const
{
double dur = duration();
if (!m_player || std::isnan(dur))
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.
double now = currentTime();
if (m_playbackRate > 0)
return dur > 0 && now >= dur && (!loop() || m_mediaController);
// or the current playback position is the earliest possible position and the direction
// of playback is backwards
if (m_playbackRate < 0)
return now <= 0;
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
{
// return !paused() && m_readyState >= HAVE_FUTURE_DATA && [UA requires a decitions from the user]
return false;
}
double HTMLMediaElement::minTimeSeekable() const
{
return m_player ? m_player->minTimeSeekable() : 0;
}
double HTMLMediaElement::maxTimeSeekable() const
{
return m_player ? m_player->maxTimeSeekable() : 0;
}
void HTMLMediaElement::updateVolume()
{
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 = m_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();
}
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 - shouldBePlaying = %s, playerPaused = %s",
boolString(shouldBePlaying), boolString(playerPaused));
if (shouldBePlaying) {
setDisplayMode(Video);
invalidateCachedTime();
if (playerPaused) {
if (!m_isFullscreen && isVideo() && document().page() && document().page()->chrome().requiresFullscreenForVideoPlayback())
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(m_playbackRate);
m_player->setMuted(m_muted);
m_player->play();
}
if (hasMediaControls())
mediaControls()->playbackStarted();
if (document().page())
m_activityToken = document().page()->createActivityToken();
startPlaybackProgressTimer();
m_playing = true;
} else { // Should not be playing right now
if (!playerPaused)
m_player->pause();
refreshCachedTime();
m_playbackProgressTimer.stop();
m_playing = false;
double time = currentTime();
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");
if (m_networkState == NETWORK_EMPTY || m_completelyLoaded)
return;
// 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(0);
#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)
removeAllInbandTracks();
#endif
#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
#if ENABLE(MEDIA_SOURCE)
closeMediaSource();
#endif
m_player.clear();
#endif
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");
if (m_isFullscreen)
exitFullscreen();
m_inActiveDocument = false;
userCancelledLoad();
// Stop the playback without generating events
m_playing = false;
setPausedInternal(true);
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");
switch (why)
{
case DocumentWillBecomeInactive:
stop();
addBehaviorRestriction(RequirePageConsentToResumeMediaRestriction);
break;
case PageWillBeSuspended:
case JavaScriptDebuggerPaused:
case WillDeferLoading:
// Do nothing, we don't pause media playback in these cases.
break;
}
}
void HTMLMediaElement::resume()
{
LOG(Media, "HTMLMediaElement::resume");
m_inActiveDocument = true;
Page* page = document().page();
if (pageConsentRequiredForResume() && page && !page->canStartMedia())
document().addMediaCanStartListener(this);
else
setPausedInternal(false);
removeBehaviorRestriction(RequirePageConsentToResumeMediaRestriction);
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");
updateVolume();
}
#if ENABLE(PAGE_VISIBILITY_API)
void HTMLMediaElement::visibilityStateChanged()
{
LOG(Media, "HTMLMediaElement::visibilityStateChanged");
m_isDisplaySleepDisablingSuspended = document().hidden();
updateSleepDisabling();
}
#endif
void HTMLMediaElement::defaultEventHandler(Event* event)
{
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
auto renderer = this->renderer();
if (!renderer || !renderer->isWidget())
return;
if (Widget* widget = toRenderWidget(renderer)->widget())
widget->handleEvent(event);
#else
HTMLElement::defaultEventHandler(event);
#endif
}
bool HTMLMediaElement::willRespondToMouseClickEvents()
{
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
return true;
#else
return HTMLElement::willRespondToMouseClickEvents();
#endif
}
#if ENABLE(VIDEO_TRACK)
bool HTMLMediaElement::requiresTextTrackRepresentation() const
{
return m_player ? m_player->requiresTextTrackRepresentation() : 0;
}
void HTMLMediaElement::setTextTrackRepresentation(TextTrackRepresentation* representation)
{
if (m_player)
m_player->setTextTrackRepresentation(representation);
}
#endif // ENABLE(VIDEO_TRACK)
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
void HTMLMediaElement::ensureMediaPlayer()
{
if (!m_player)
createMediaPlayer();
}
void HTMLMediaElement::deliverNotification(MediaPlayerProxyNotificationType notification)
{
if (notification == MediaPlayerNotificationPlayPauseButtonPressed) {
togglePlayState();
return;
}
if (m_player)
m_player->deliverNotification(notification);
}
void HTMLMediaElement::setMediaPlayerProxy(WebMediaPlayerProxy* proxy)
{
ensureMediaPlayer();
m_player->setMediaPlayerProxy(proxy);
}
void HTMLMediaElement::getPluginProxyParams(URL& url, Vector<String>& names, Vector<String>& values)
{
Ref<HTMLMediaElement> protect(*this); // selectNextSourceChild may fire 'beforeload', which can make arbitrary DOM mutations.
Frame* frame = document().frame();
if (isVideo()) {
HTMLVideoElement* video = toHTMLVideoElement(this);
URL posterURL = video->posterImageURL();
if (!posterURL.isEmpty() && frame && frame->loader().willLoadMediaElementURL(posterURL)) {
names.append(ASCIILiteral("_media_element_poster_"));
values.append(posterURL.string());
}
}
if (controls()) {
names.append(ASCIILiteral("_media_element_controls_"));
values.append(ASCIILiteral("true"));
}
url = src();
if (!isSafeToLoadURL(url, Complain))
url = selectNextSourceChild(0, 0, DoNothing);
m_currentSrc = url;
if (url.isValid() && frame && frame->loader().willLoadMediaElementURL(url)) {
names.append(ASCIILiteral("_media_element_src_"));
values.append(m_currentSrc.string());
}
}
void HTMLMediaElement::createMediaPlayerProxy()
{
ensureMediaPlayer();
if (m_proxyWidget || (inDocument() && !m_needWidgetUpdate))
return;
Frame* frame = document().frame();
if (!frame)
return;
LOG(Media, "HTMLMediaElement::createMediaPlayerProxy");
URL url;
Vector<String> paramNames;
Vector<String> paramValues;
getPluginProxyParams(url, paramNames, paramValues);
// Hang onto the proxy widget so it won't be destroyed if the plug-in is set to
// display:none
m_proxyWidget = frame->loader().subframeLoader().loadMediaPlayerProxyPlugin(this, url, paramNames, paramValues);
if (m_proxyWidget)
m_needWidgetUpdate = false;
}
void HTMLMediaElement::updateWidget(PluginCreationOption)
{
mediaElement->setNeedWidgetUpdate(false);
Vector<String> paramNames;
Vector<String> paramValues;
// FIXME: Rename kurl to something more sensible.
URL kurl;
mediaElement->getPluginProxyParams(kurl, paramNames, paramValues);
// FIXME: What if document().frame() is 0?
SubframeLoader& loader = document().frame()->loader().subframeLoader();
loader.loadMediaPlayerProxyPlugin(mediaElement, kurl, paramNames, paramValues);
}
#endif // ENABLE(PLUGIN_PROXY_FOR_VIDEO)
bool HTMLMediaElement::isFullscreen() const
{
if (m_isFullscreen)
return true;
#if ENABLE(FULLSCREEN_API)
if (document().webkitIsFullScreen() && document().webkitCurrentFullScreenElement() == this)
return true;
#endif
return false;
}
void HTMLMediaElement::toggleFullscreenState()
{
LOG(Media, "HTMLMediaElement::toggleFullscreenState - isFullscreen() is %s", boolString(isFullscreen()));
if (isFullscreen())
exitFullscreen();
else
enterFullscreen();
}
void HTMLMediaElement::enterFullscreen()
{
LOG(Media, "HTMLMediaElement::enterFullscreen");
#if ENABLE(FULLSCREEN_API)
if (document().settings() && document().settings()->fullScreenEnabled()) {
document().requestFullScreenForElement(this, 0, Document::ExemptIFrameAllowFullScreenRequirement);
return;
}
#endif
ASSERT(!m_isFullscreen);
m_isFullscreen = true;
if (hasMediaControls())
mediaControls()->enteredFullscreen();
if (document().page()) {
document().page()->chrome().client().enterFullscreenForNode(this);
scheduleEvent(eventNames().webkitbeginfullscreenEvent);
}
}
void HTMLMediaElement::exitFullscreen()
{
LOG(Media, "HTMLMediaElement::exitFullscreen");
#if ENABLE(FULLSCREEN_API)
if (document().settings() && document().settings()->fullScreenEnabled()) {
if (document().webkitIsFullScreen() && document().webkitCurrentFullScreenElement() == this)
document().webkitCancelFullScreen();
return;
}
#endif
ASSERT(m_isFullscreen);
m_isFullscreen = false;
if (hasMediaControls())
mediaControls()->exitedFullscreen();
if (document().page()) {
if (document().page()->chrome().requiresFullscreenForVideoPlayback())
pauseInternal();
document().page()->chrome().client().exitFullscreenForNode(this);
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;
}
#if USE(ACCELERATED_COMPOSITING)
PlatformLayer* HTMLMediaElement::platformLayer() const
{
return m_player ? m_player->platformLayer() : 0;
}
#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();
return;
#endif
if (!hasMediaControls() && !createMediaControls())
return;
mediaControls()->updateTextTrackDisplay();
}
#endif
void HTMLMediaElement::setClosedCaptionsVisible(bool closedCaptionVisible)
{
LOG(Media, "HTMLMediaElement::setClosedCaptionsVisible(%s)", 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");
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(%s)", 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;
Settings* settings = document().settings();
bool privateMode = !settings || settings->privateBrowsingEnabled();
LOG(Media, "HTMLMediaElement::privateBrowsingStateDidChange(%s)", 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, AttachLazily);
if (!controls() || !inDocument())
mediaControls->hide();
return true;
#endif
}
void HTMLMediaElement::configureMediaControls()
{
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
if (!controls() || !inDocument())
return;
ensureUserAgentShadowRoot();
return;
#elif !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
if (!controls() || !inDocument()) {
if (hasMediaControls())
mediaControls()->hide();
return;
}
if (!hasMediaControls() && !createMediaControls())
return;
mediaControls()->show();
#else
if (m_player)
m_player->setControls(controls());
if (!hasMediaControls() && inDocument())
createMediaControls();
#endif
}
#if ENABLE(VIDEO_TRACK)
void HTMLMediaElement::configureTextTrackDisplay(TextTrackVisibilityCheckType checkType)
{
ASSERT(m_textTracks);
if (m_processingPreferenceChange)
return;
LOG(Media, "HTMLMediaElement::configureTextTrackDisplay");
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(currentTime());
return;
}
m_haveVisibleTextTrack = haveVisibleTextTrack;
m_closedCaptionsVisible = m_haveVisibleTextTrack;
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
if (!m_haveVisibleTextTrack)
return;
ensureUserAgentShadowRoot();
return;
#endif
if (!m_haveVisibleTextTrack && !hasMediaControls())
return;
if (!hasMediaControls() && !createMediaControls())
return;
mediaControls()->changedClosedCaptionsVisibility();
if (RuntimeEnabledFeatures::sharedFeatures().webkitVideoTrackEnabled()) {
updateTextTrackDisplay();
updateActiveTextTrackCues(currentTime());
}
}
void HTMLMediaElement::captionPreferencesChanged()
{
if (!isVideo())
return;
if (hasMediaControls())
mediaControls()->textTrackPreferencesChanged();
if (!document().page())
return;
CaptionUserPreferences::CaptionDisplayMode displayMode = document().page()->group().captionPreferences()->captionDisplayMode();
if (m_captionDisplayMode == displayMode)
return;
m_captionDisplayMode = displayMode;
setClosedCaptionsVisible(m_captionDisplayMode == CaptionUserPreferences::AlwaysOn);
}
void HTMLMediaElement::markCaptionAndSubtitleTracksAsUnconfigured(ReconfigureMode mode)
{
if (!m_textTracks)
return;
LOG(Media, "HTMLMediaElement::markCaptionAndSubtitleTracksAsUnconfigured");
// 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)
removeAllInbandTracks();
#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(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::dispatchEvent(PassRefPtr<Event> event)
{
bool dispatchResult;
bool isCanPlayEvent;
isCanPlayEvent = (event->type() == eventNames().canplayEvent);
if (isCanPlayEvent)
m_dispatchingCanPlayEvent = true;
dispatchResult = HTMLElement::dispatchEvent(event);
if (isCanPlayEvent)
m_dispatchingCanPlayEvent = false;
return dispatchResult;
}
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);
double dur = duration();
double start = fragmentParser.startTime();
if (start != MediaFragmentURIParser::invalidTimeValue() && start > 0) {
m_fragmentStartTime = start;
if (m_fragmentStartTime > dur)
m_fragmentStartTime = dur;
} else
m_fragmentStartTime = MediaPlayer::invalidTime();
double end = fragmentParser.endTime();
if (end != MediaFragmentURIParser::invalidTimeValue() && end > 0 && end > m_fragmentStartTime) {
m_fragmentEndTime = end;
if (m_fragmentEndTime > dur)
m_fragmentEndTime = dur;
} else
m_fragmentEndTime = MediaPlayer::invalidTime();
if (m_fragmentStartTime != MediaPlayer::invalidTime() && m_readyState < HAVE_FUTURE_DATA)
prepareToPlay();
}
void HTMLMediaElement::applyMediaFragmentURI()
{
if (m_fragmentStartTime != MediaPlayer::invalidTime()) {
m_sentEndEvent = false;
seek(m_fragmentStartTime, IGNORE_EXCEPTION);
}
}
void HTMLMediaElement::updateSleepDisabling()
{
#if PLATFORM(MAC)
if (!shouldDisableSleep() && m_sleepDisabler)
m_sleepDisabler = nullptr;
else if (shouldDisableSleep() && !m_sleepDisabler)
m_sleepDisabler = DisplaySleepDisabler::create("com.apple.WebCore: HTMLMediaElement playback");
#endif
}
#if PLATFORM(MAC)
bool HTMLMediaElement::shouldDisableSleep() const
{
#if ENABLE(PAGE_VISIBILITY_API)
if (m_isDisplaySleepDisablingSuspended)
return false;
#endif
return m_player && !m_player->paused() && hasVideo() && hasAudio() && !loop();
}
#endif
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);
}
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 !userGestureRequiredForFullscreen() || ScriptController::processingUserGesture();
}
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();
}
HostWindow* HTMLMediaElement::mediaPlayerHostWindow()
{
return mediaPlayerOwningDocument()->view()->hostWindow();
}
IntRect HTMLMediaElement::mediaPlayerWindowClipRect()
{
return mediaPlayerOwningDocument()->view()->windowClipRect();
}
CachedResourceLoader* HTMLMediaElement::mediaPlayerCachedResourceLoader()
{
return mediaPlayerOwningDocument()->cachedResourceLoader();
}
void HTMLMediaElement::removeBehaviorsRestrictionsAfterFirstUserGesture()
{
m_restrictions = NoRestrictions;
}
#if ENABLE(MEDIA_CONTROLS_SCRIPT)
DOMWrapperWorld& HTMLMediaElement::ensureIsolatedWorld()
{
if (!m_isolatedWorld)
m_isolatedWorld = DOMWrapperWorld::create(JSDOMWindow::commonVM());
return *m_isolatedWorld;
}
bool HTMLMediaElement::ensureMediaControlsInjectedScript()
{
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::JSValue overlayValue = globalObject->get(exec, JSC::Identifier(exec, "createControls"));
if (overlayValue.isFunction())
return true;
scriptController.evaluateInWorld(ScriptSourceCode(mediaControlsScript), world);
if (exec->hadException()) {
exec->clearException();
return false;
}
return true;
}
void HTMLMediaElement::didAddUserAgentShadowRoot(ShadowRoot* root)
{
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);
// It is expected the JS file provides a createControls(shadowRoot, video, mediaControlsHost) function.
JSC::JSValue overlayValue = globalObject->get(exec, JSC::Identifier(exec, "createControls"));
if (overlayValue.isUndefinedOrNull())
return;
if (!m_mediaControlsHost)
m_mediaControlsHost = MediaControlsHost::create(this);
JSC::MarkedArgumentBuffer argList;
argList.append(toJS(exec, globalObject, root));
argList.append(toJS(exec, globalObject, this));
argList.append(toJS(exec, globalObject, m_mediaControlsHost.get()));
JSC::JSObject* overlay = overlayValue.toObject(exec);
JSC::CallData callData;
JSC::CallType callType = overlay->methodTable()->getCallData(overlay, callData);
if (callType == JSC::CallTypeNone)
return;
JSC::call(exec, overlay, callType, callData, globalObject, argList);
if (exec->hadException())
exec->clearException();
}
#endif
}
#endif