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webkit / WebKit / 26b85d388d901893e633171f8bd69f8513599c73 / . / Source / WebCore / html / HTMLMediaElement.cpp
blob: 8033dc884791cfd88c3853850537ed3f12ed668f [file] [log] [blame]
/*
* Copyright (C) 2007, 2008, 2009, 2010, 2011, 2012 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 "DocumentLoader.h"
#include "Event.h"
#include "EventNames.h"
#include "ExceptionCode.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "FrameView.h"
#include "HTMLDocument.h"
#include "HTMLNames.h"
#include "HTMLSourceElement.h"
#include "HTMLVideoElement.h"
#include "Language.h"
#include "Logging.h"
#include "MediaController.h"
#include "MediaControls.h"
#include "MediaDocument.h"
#include "MediaError.h"
#include "MediaFragmentURIParser.h"
#include "MediaList.h"
#include "MediaPlayer.h"
#include "MediaQueryEvaluator.h"
#include "MouseEvent.h"
#include "MIMETypeRegistry.h"
#include "NodeRenderingContext.h"
#include "Page.h"
#include "RenderVideo.h"
#include "RenderView.h"
#include "ScriptController.h"
#include "ScriptEventListener.h"
#include "SecurityOrigin.h"
#include "SecurityPolicy.h"
#include "Settings.h"
#include "ShadowRoot.h"
#include "ShadowTree.h"
#include "TimeRanges.h"
#include "UUID.h"
#include <limits>
#include <wtf/CurrentTime.h>
#include <wtf/MathExtras.h>
#include <wtf/NonCopyingSort.h>
#include <wtf/Uint8Array.h>
#include <wtf/text/CString.h>
#if USE(ACCELERATED_COMPOSITING)
#include "RenderView.h"
#include "RenderLayerCompositor.h"
#endif
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
#include "RenderEmbeddedObject.h"
#include "Widget.h"
#endif
#if ENABLE(VIDEO_TRACK)
#include "HTMLTrackElement.h"
#include "RuntimeEnabledFeatures.h"
#include "TextTrackCueList.h"
#include "TextTrackList.h"
#endif
#if ENABLE(WEB_AUDIO)
#include "AudioSourceProvider.h"
#include "MediaElementAudioSourceNode.h"
#endif
#if PLATFORM(MAC)
#include "DisplaySleepDisabler.h"
#endif
using namespace std;
namespace WebCore {
#if !LOG_DISABLED
static String urlForLogging(const KURL& 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
static const float invalidMediaTime = -1;
#if ENABLE(MEDIA_SOURCE)
// URL protocol used to signal that the media source API is being used.
static const char* mediaSourceURLProtocol = "x-media-source";
#endif
using namespace HTMLNames;
using namespace std;
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);
}
HTMLMediaElement::HTMLMediaElement(const QualifiedName& tagName, Document* document, bool createdByParser)
: HTMLElement(tagName, document)
, ActiveDOMObject(document, this)
, m_loadTimer(this, &HTMLMediaElement::loadTimerFired)
, m_progressEventTimer(this, &HTMLMediaElement::progressEventTimerFired)
, m_playbackProgressTimer(this, &HTMLMediaElement::playbackProgressTimerFired)
, m_playedTimeRanges()
, 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_lastSeekTime(0)
, m_previousProgress(0)
, m_previousProgressTime(numeric_limits<double>::max())
, m_lastTimeUpdateEventWallTime(0)
, m_lastTimeUpdateEventMovieTime(numeric_limits<float>::max())
, m_loadState(WaitingForSource)
, m_currentSourceNode(0)
, m_nextChildNodeToConsider(0)
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
, m_proxyWidget(0)
#endif
, m_restrictions(RequireUserGestureForFullscreenRestriction | RequirePageConsentToLoadMediaRestriction)
, m_preload(MediaPlayer::Auto)
, m_displayMode(Unknown)
, m_processingMediaPlayerCallback(0)
#if ENABLE(MEDIA_SOURCE)
, m_sourceState(SOURCE_CLOSED)
#endif
, m_cachedTime(invalidMediaTime)
, m_cachedTimeWallClockUpdateTime(0)
, m_minimumWallClockTimeToCacheMediaTime(0)
, m_fragmentStartTime(invalidMediaTime)
, m_fragmentEndTime(invalidMediaTime)
, m_pendingLoadFlags(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)
#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(VIDEO_TRACK)
, m_tracksAreReady(true)
, m_haveVisibleTextTrack(false)
, m_lastTextTrackUpdateTime(-1)
, m_textTracks(0)
, m_ignoreTrackDisplayUpdate(0)
#endif
#if ENABLE(WEB_AUDIO)
, m_audioSourceNode(0)
#endif
{
LOG(Media, "HTMLMediaElement::HTMLMediaElement");
document->registerForMediaVolumeCallbacks(this);
document->registerForPrivateBrowsingStateChangedCallbacks(this);
if (document->settings() && document->settings()->mediaPlaybackRequiresUserGesture())
addBehaviorRestriction(RequireUserGestureForRateChangeRestriction);
#if ENABLE(MEDIA_SOURCE)
m_mediaSourceURL.setProtocol(mediaSourceURLProtocol);
m_mediaSourceURL.setPath(createCanonicalUUIDString());
#endif
setHasCustomWillOrDidRecalcStyle();
addElementToDocumentMap(this, document);
}
HTMLMediaElement::~HTMLMediaElement()
{
LOG(Media, "HTMLMediaElement::~HTMLMediaElement");
if (m_isWaitingUntilMediaCanStart)
document()->removeMediaCanStartListener(this);
setShouldDelayLoadEvent(false);
document()->unregisterForMediaVolumeCallbacks(this);
document()->unregisterForPrivateBrowsingStateChangedCallbacks(this);
#if ENABLE(VIDEO_TRACK)
if (m_textTracks)
m_textTracks->clearOwner();
if (m_textTracks) {
for (unsigned i = 0; i < m_textTracks->length(); ++i)
m_textTracks->item(i)->clearClient();
}
#endif
if (m_mediaController)
m_mediaController->removeMediaElement(this);
removeElementFromDocumentMap(this, document());
}
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::supportsFocus() const
{
if (ownerDocument()->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(Attribute* attr)
{
const QualifiedName& attrName = attr->name();
if (attrName == srcAttr) {
// Trigger a reload, as long as the 'src' attribute is present.
if (fastHasAttribute(srcAttr))
scheduleLoad(MediaResource);
} else if (attrName == controlsAttr)
configureMediaControls();
#if PLATFORM(MAC)
else if (attrName == loopAttr)
updateDisableSleep();
#endif
else if (attrName == preloadAttr) {
String value = attr->value();
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 (attrName == mediagroupAttr)
setMediaGroup(attr->value());
else if (attrName == onabortAttr)
setAttributeEventListener(eventNames().abortEvent, createAttributeEventListener(this, attr));
else if (attrName == onbeforeloadAttr)
setAttributeEventListener(eventNames().beforeloadEvent, createAttributeEventListener(this, attr));
else if (attrName == oncanplayAttr)
setAttributeEventListener(eventNames().canplayEvent, createAttributeEventListener(this, attr));
else if (attrName == oncanplaythroughAttr)
setAttributeEventListener(eventNames().canplaythroughEvent, createAttributeEventListener(this, attr));
else if (attrName == ondurationchangeAttr)
setAttributeEventListener(eventNames().durationchangeEvent, createAttributeEventListener(this, attr));
else if (attrName == onemptiedAttr)
setAttributeEventListener(eventNames().emptiedEvent, createAttributeEventListener(this, attr));
else if (attrName == onendedAttr)
setAttributeEventListener(eventNames().endedEvent, createAttributeEventListener(this, attr));
else if (attrName == onerrorAttr)
setAttributeEventListener(eventNames().errorEvent, createAttributeEventListener(this, attr));
else if (attrName == onloadeddataAttr)
setAttributeEventListener(eventNames().loadeddataEvent, createAttributeEventListener(this, attr));
else if (attrName == onloadedmetadataAttr)
setAttributeEventListener(eventNames().loadedmetadataEvent, createAttributeEventListener(this, attr));
else if (attrName == onloadstartAttr)
setAttributeEventListener(eventNames().loadstartEvent, createAttributeEventListener(this, attr));
else if (attrName == onpauseAttr)
setAttributeEventListener(eventNames().pauseEvent, createAttributeEventListener(this, attr));
else if (attrName == onplayAttr)
setAttributeEventListener(eventNames().playEvent, createAttributeEventListener(this, attr));
else if (attrName == onplayingAttr)
setAttributeEventListener(eventNames().playingEvent, createAttributeEventListener(this, attr));
else if (attrName == onprogressAttr)
setAttributeEventListener(eventNames().progressEvent, createAttributeEventListener(this, attr));
else if (attrName == onratechangeAttr)
setAttributeEventListener(eventNames().ratechangeEvent, createAttributeEventListener(this, attr));
else if (attrName == onseekedAttr)
setAttributeEventListener(eventNames().seekedEvent, createAttributeEventListener(this, attr));
else if (attrName == onseekingAttr)
setAttributeEventListener(eventNames().seekingEvent, createAttributeEventListener(this, attr));
else if (attrName == onstalledAttr)
setAttributeEventListener(eventNames().stalledEvent, createAttributeEventListener(this, attr));
else if (attrName == onsuspendAttr)
setAttributeEventListener(eventNames().suspendEvent, createAttributeEventListener(this, attr));
else if (attrName == ontimeupdateAttr)
setAttributeEventListener(eventNames().timeupdateEvent, createAttributeEventListener(this, attr));
else if (attrName == onvolumechangeAttr)
setAttributeEventListener(eventNames().volumechangeEvent, createAttributeEventListener(this, attr));
else if (attrName == onwaitingAttr)
setAttributeEventListener(eventNames().waitingEvent, createAttributeEventListener(this, attr));
else if (attrName == onwebkitbeginfullscreenAttr)
setAttributeEventListener(eventNames().webkitbeginfullscreenEvent, createAttributeEventListener(this, attr));
else if (attrName == onwebkitendfullscreenAttr)
setAttributeEventListener(eventNames().webkitendfullscreenEvent, createAttributeEventListener(this, attr));
else
HTMLElement::parseAttribute(attr);
}
void HTMLMediaElement::finishParsingChildren()
{
HTMLElement::finishParsingChildren();
m_parsingInProgress = false;
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
document()->updateStyleIfNeeded();
createMediaPlayerProxy();
#endif
#if ENABLE(VIDEO_TRACK)
if (!RuntimeEnabledFeatures::webkitVideoTrackEnabled())
return;
for (Node* node = firstChild(); node; node = node->nextSibling()) {
if (node->hasTagName(trackTag)) {
scheduleLoad(TextTrackResource);
break;
}
}
#endif
}
bool HTMLMediaElement::rendererIsNeeded(const NodeRenderingContext& context)
{
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
UNUSED_PARAM(context);
Frame* frame = document()->frame();
if (!frame)
return false;
return true;
#else
return controls() ? HTMLElement::rendererIsNeeded(context) : false;
#endif
}
RenderObject* HTMLMediaElement::createRenderer(RenderArena* arena, RenderStyle*)
{
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
// Setup the renderer if we already have a proxy widget.
RenderEmbeddedObject* mediaRenderer = new (arena) RenderEmbeddedObject(this);
if (m_proxyWidget) {
mediaRenderer->setWidget(m_proxyWidget);
if (Frame* frame = document()->frame())
frame->loader()->client()->showMediaPlayerProxyPlugin(m_proxyWidget.get());
}
return mediaRenderer;
#else
return new (arena) RenderMedia(this);
#endif
}
bool HTMLMediaElement::childShouldCreateRenderer(const NodeRenderingContext& childContext) const
{
return childContext.isOnEncapsulationBoundary() && HTMLElement::childShouldCreateRenderer(childContext);
}
void HTMLMediaElement::insertedIntoDocument()
{
LOG(Media, "HTMLMediaElement::insertedIntoDocument");
HTMLElement::insertedIntoDocument();
if (!getAttribute(srcAttr).isEmpty() && m_networkState == NETWORK_EMPTY)
scheduleLoad(MediaResource);
}
void HTMLMediaElement::removedFromDocument()
{
LOG(Media, "HTMLMediaElement::removedFromDocument");
if (m_networkState > NETWORK_EMPTY)
pause();
if (m_isFullscreen)
exitFullscreen();
HTMLElement::removedFromDocument();
}
void HTMLMediaElement::attach()
{
ASSERT(!attached());
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
m_needWidgetUpdate = true;
#endif
HTMLElement::attach();
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(StyleChange)
{
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::scheduleLoad(LoadType loadType)
{
LOG(Media, "HTMLMediaElement::scheduleLoad");
if ((loadType & MediaResource) && !(m_pendingLoadFlags & MediaResource)) {
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
createMediaPlayerProxy();
#endif
prepareForLoad();
m_pendingLoadFlags |= MediaResource;
}
#if ENABLE(VIDEO_TRACK)
if (loadType & TextTrackResource)
m_pendingLoadFlags |= TextTrackResource;
#endif
if (!m_loadTimer.isActive())
m_loadTimer.startOneShot(0);
}
void HTMLMediaElement::scheduleNextSourceChild()
{
// Schedule the timer to try the next <source> element WITHOUT resetting state ala prepareForLoad.
m_pendingLoadFlags |= MediaResource;
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);
event->setTarget(this);
m_asyncEventQueue.enqueueEvent(event.release());
}
void HTMLMediaElement::loadTimerFired(Timer<HTMLMediaElement>*)
{
#if ENABLE(VIDEO_TRACK)
if (m_pendingLoadFlags & TextTrackResource)
configureNewTextTracks();
#endif
if (m_pendingLoadFlags & MediaResource) {
if (m_loadState == LoadingFromSourceElement)
loadNextSourceChild();
else
loadInternal();
}
m_pendingLoadFlags = 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
{
MediaPlayer::SupportsType support = MediaPlayer::supportsType(ContentType(mimeType));
String canPlay;
// 4.8.10.3
switch (support)
{
case MediaPlayer::IsNotSupported:
canPlay = "";
break;
case MediaPlayer::MayBeSupported:
canPlay = "maybe";
break;
case MediaPlayer::IsSupported:
canPlay = "probably";
break;
}
LOG(Media, "HTMLMediaElement::canPlayType(%s) -> %s", mimeType.utf8().data(), canPlay.utf8().data());
return canPlay;
}
void HTMLMediaElement::load(ExceptionCode& ec)
{
LOG(Media, "HTMLMediaElement::load()");
if (userGestureRequiredForLoad() && !ScriptController::processingUserGesture())
ec = INVALID_STATE_ERR;
else {
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(PLUGIN_PROXY_FOR_VIDEO)
createMediaPlayer();
#else
if (m_player)
m_player->cancelLoad();
else
createMediaPlayerProxy();
#endif
#if ENABLE(MEDIA_SOURCE)
if (m_sourceState != SOURCE_CLOSED)
setSourceState(SOURCE_CLOSED);
#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)
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;
m_closedCaptionsVisible = false;
// 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.
setShouldDelayLoadEvent(true);
configureMediaControls();
}
void HTMLMediaElement::loadInternal()
{
// If we can't start a load right away, start it later.
Page* page = document()->page();
if (pageConsentRequiredForLoad() && page && !page->canStartMedia()) {
if (m_isWaitingUntilMediaCanStart)
return;
document()->addMediaCanStartListener(this);
m_isWaitingUntilMediaCanStart = true;
return;
}
// 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)
// HTMLMediaElement::textTracksAreReady will need "... the text tracks whose mode was not in the
// disabled state when the element's resource selection algorithm last started".
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::DISABLED)
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)) {
Node* node;
for (node = firstChild(); node; node = node->nextSibling()) {
if (node->hasTagName(sourceTag))
break;
}
// 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 (node) {
mode = children;
m_nextChildNodeToConsider = 0;
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
KURL 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 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("");
loadResource(mediaURL, contentType);
LOG(Media, "HTMLMediaElement::selectMediaResource, using 'src' attribute url");
return;
}
// Otherwise, the source elements will be used
loadNextSourceChild();
}
void HTMLMediaElement::loadNextSourceChild()
{
ContentType contentType("");
KURL mediaURL = selectNextSourceChild(&contentType, 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);
}
#if !PLATFORM(CHROMIUM)
static KURL createFileURLForApplicationCacheResource(const String& path)
{
// KURL should have a function to create a url from a path, but it does not. This function
// is not suitable because KURL::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<CFStringRef> cfPath(AdoptCF, path.createCFString());
RetainPtr<CFURLRef> cfURL(AdoptCF, CFURLCreateWithFileSystemPath(0, cfPath.get(), kCFURLWindowsPathStyle, false));
KURL url(cfURL.get());
#else
KURL url;
url.setProtocol("file");
url.setPath(path);
#endif
return url;
}
#endif
void HTMLMediaElement::loadResource(const KURL& initialURL, ContentType& contentType)
{
ASSERT(isSafeToLoadURL(initialURL, Complain));
LOG(Media, "HTMLMediaElement::loadResource(%s, %s)", urlForLogging(initialURL).utf8().data(), contentType.raw().utf8().data());
Frame* frame = document()->frame();
if (!frame) {
mediaLoadingFailed(MediaPlayer::FormatError);
return;
}
KURL url = initialURL;
if (!frame->loader()->willLoadMediaElementURL(url)) {
mediaLoadingFailed(MediaPlayer::FormatError);
return;
}
#if ENABLE(MEDIA_SOURCE)
// If this is a media source URL, make sure it is the one for this media element.
if (url.protocolIs(mediaSourceURLProtocol) && url != m_mediaSourceURL) {
mediaLoadingFailed(MediaPlayer::FormatError);
return;
}
#endif
// The resource fetch algorithm
m_networkState = NETWORK_LOADING;
#if !PLATFORM(CHROMIUM)
// 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;
}
}
#endif
// 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 !PLATFORM(CHROMIUM)
if (resource) {
url = createFileURLForApplicationCacheResource(resource->path());
LOG(Media, "HTMLMediaElement::loadResource - will load from app cache -> %s", urlForLogging(url).utf8().data());
}
#endif
LOG(Media, "HTMLMediaElement::loadResource - m_currentSrc -> %s", urlForLogging(m_currentSrc).utf8().data());
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 (!m_player->load(url, contentType))
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;
}
void HTMLMediaElement::updateActiveTextTrackCues(float movieTime)
{
LOG(Media, "HTMLMediaElement::updateActiveTextTracks");
// 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;
// 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.
Vector<CueIntervalTree::IntervalType> 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));
Vector<CueIntervalTree::IntervalType> affectedCues;
Vector<CueIntervalTree::IntervalType> previousCues;
Vector<CueIntervalTree::IntervalType> 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.
float 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) {
Vector<CueIntervalTree::IntervalType> potentiallySkippedCues =
m_cueTree.allOverlaps(m_cueTree.createInterval(lastTime, movieTime));
for (size_t i = 0; i < potentiallySkippedCues.size(); ++i) {
float cueStartTime = potentiallySkippedCues[i].low();
float cueEndTime = potentiallySkippedCues[i].high();
// Consider cues that may have been missed since the last seek time.
if (cueStartTime > 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; !activeSetChanged && i < currentCuesSize; ++i) {
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 text track cue end
// time.
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).
nonCopyingSort(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, since the startTime is
// always less than the endTime.
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.
nonCopyingSort(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,
// if the text track has a corresponding track element, to then fire a
// simple event named cuechange at the track element as well.
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());
// Fire syncronous cue change event for track elements.
if (affectedTracks[i]->trackType() == TextTrack::TrackElement)
affectedTracks[i]->fireCueChangeEvent();
}
// 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 && hasMediaControls())
mediaControls()->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)
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());
}
}
void HTMLMediaElement::textTrackModeChanged(TextTrack* track)
{
if (track->trackType() == TextTrack::TrackElement) {
// 4.8.10.12.3 Sourcing out-of-band text tracks
// ... when a text track corresponding to a track element is created with text track
// mode set to disabled and subsequently changes its text track mode to hidden, showing,
// or showing by default for the first time, the user agent must immediately and synchronously
// run the following algorithm ...
for (Node* node = firstChild(); node; node = node->nextSibling()) {
if (!node->hasTagName(trackTag))
continue;
HTMLTrackElement* trackElement = static_cast<HTMLTrackElement*>(node);
if (trackElement->track() != track)
continue;
// Mark this track as "configured" so configureNewTextTracks won't change the mode again.
trackElement->setHasBeenConfigured(true);
if (track->mode() != TextTrack::DISABLED && trackElement->readyState() == HTMLTrackElement::NONE)
trackElement->scheduleLoad();
break;
}
}
configureTextTrackDisplay();
}
void HTMLMediaElement::textTrackKindChanged(TextTrack*)
{
// FIXME(62885): Implement.
}
void HTMLMediaElement::textTrackAddCues(TextTrack*, const TextTrackCueList* cues)
{
beginIgnoringTrackDisplayUpdateRequests();
for (size_t i = 0; i < cues->length(); ++i)
textTrackAddCue(cues->item(i)->track(), cues->item(i));
endIgnoringTrackDisplayUpdateRequests();
updateActiveTextTrackCues(currentTime());
}
void HTMLMediaElement::textTrackRemoveCues(TextTrack*, const TextTrackCueList* cues)
{
beginIgnoringTrackDisplayUpdateRequests();
for (size_t i = 0; i < cues->length(); ++i)
textTrackRemoveCue(cues->item(i)->track(), cues->item(i));
endIgnoringTrackDisplayUpdateRequests();
updateActiveTextTrackCues(currentTime());
}
void HTMLMediaElement::textTrackAddCue(TextTrack*, PassRefPtr<TextTrackCue> cue)
{
m_cueTree.add(m_cueTree.createInterval(cue->startTime(), cue->endTime(), cue.get()));
updateActiveTextTrackCues(currentTime());
}
void HTMLMediaElement::textTrackRemoveCue(TextTrack*, PassRefPtr<TextTrackCue> cue)
{
m_cueTree.remove(m_cueTree.createInterval(cue->startTime(), cue->endTime(), cue.get()));
updateActiveTextTrackCues(currentTime());
}
#endif
bool HTMLMediaElement::isSafeToLoadURL(const KURL& url, InvalidURLAction actionIfInvalid)
{
if (!url.isValid()) {
LOG(Media, "HTMLMediaElement::isSafeToLoadURL(%s) -> FALSE because url is invalid", urlForLogging(url).utf8().data());
return false;
}
Frame* frame = document()->frame();
if (!frame || !document()->securityOrigin()->canDisplay(url)) {
if (actionIfInvalid == Complain)
FrameLoader::reportLocalLoadFailed(frame, url.string());
LOG(Media, "HTMLMediaElement::isSafeToLoadURL(%s) -> FALSE rejected by SecurityOrigin", urlForLogging(url).utf8().data());
return false;
}
if (!document()->contentSecurityPolicy()->allowMediaFromSource(url)) {
LOG(Media, "HTMLMediaElement::isSafeToLoadURL(%s) -> rejected by Content Security Policy", urlForLogging(url).utf8().data());
return false;
}
return true;
}
void HTMLMediaElement::startProgressEventTimer()
{
if (m_progressEventTimer.isActive())
return;
m_previousProgressTime = WTF::currentTime();
m_previousProgress = 0;
// 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);
// 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)
if (m_sourceState != SOURCE_CLOSED)
setSourceState(SOURCE_CLOSED);
#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();
for (Node* node = firstChild(); node; node = node->nextSibling()) {
if (node->hasTagName(sourceTag))
static_cast<HTMLSourceElement*>(node)->cancelPendingErrorEvent();
}
}
Document* HTMLMediaElement::mediaPlayerOwningDocument()
{
Document* d = document();
if (!d)
d = ownerDocument();
return d;
}
void HTMLMediaElement::mediaPlayerNetworkStateChanged(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
setNetworkState(m_player->networkState());
endProcessingMediaPlayerCallback();
}
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();
}
}
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();
scheduleEvent(eventNames().suspendEvent);
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->bytesLoaded() != m_previousProgress)
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);
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 = 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();
}
bool shouldUpdateDisplayState = false;
if (m_readyState >= HAVE_CURRENT_DATA && oldState < HAVE_CURRENT_DATA && !m_haveFiredLoadedData) {
m_haveFiredLoadedData = true;
shouldUpdateDisplayState = true;
scheduleEvent(eventNames().loadeddataEvent);
setShouldDelayLoadEvent(false);
applyMediaFragmentURI();
}
bool isPotentiallyPlaying = potentiallyPlaying();
if (m_readyState == HAVE_FUTURE_DATA && oldState <= HAVE_CURRENT_DATA && tracksAreReady) {
scheduleEvent(eventNames().canplayEvent);
if (isPotentiallyPlaying)
scheduleEvent(eventNames().playingEvent);
shouldUpdateDisplayState = true;
}
if (m_readyState == HAVE_ENOUGH_DATA && oldState < HAVE_ENOUGH_DATA && tracksAreReady) {
if (oldState <= HAVE_CURRENT_DATA)
scheduleEvent(eventNames().canplayEvent);
scheduleEvent(eventNames().canplaythroughEvent);
if (isPotentiallyPlaying && oldState <= HAVE_CURRENT_DATA)
scheduleEvent(eventNames().playingEvent);
if (m_autoplaying && m_paused && autoplay() && !document()->isSandboxed(SandboxAutomaticFeatures)) {
m_paused = false;
invalidateCachedTime();
scheduleEvent(eventNames().playEvent);
scheduleEvent(eventNames().playingEvent);
}
shouldUpdateDisplayState = true;
}
if (shouldUpdateDisplayState) {
updateDisplayState();
if (hasMediaControls())
mediaControls()->updateStatusDisplay();
}
updatePlayState();
updateMediaController();
#if ENABLE(VIDEO_TRACK)
updateActiveTextTrackCues(currentTime());
#endif
}
#if ENABLE(MEDIA_SOURCE)
void HTMLMediaElement::mediaPlayerSourceOpened()
{
beginProcessingMediaPlayerCallback();
setSourceState(SOURCE_OPEN);
endProcessingMediaPlayerCallback();
}
String HTMLMediaElement::mediaPlayerSourceURL() const
{
return m_mediaSourceURL.string();
}
#endif
void HTMLMediaElement::progressEventTimerFired(Timer<HTMLMediaElement>*)
{
ASSERT(m_player);
if (m_networkState != NETWORK_LOADING)
return;
unsigned progress = m_player->bytesLoaded();
double time = WTF::currentTime();
double timedelta = time - m_previousProgressTime;
if (progress == m_previousProgress) {
if (timedelta > 3.0 && !m_sentStalledEvent) {
scheduleEvent(eventNames().stalledEvent);
m_sentStalledEvent = true;
setShouldDelayLoadEvent(false);
}
} else {
scheduleEvent(eventNames().progressEvent);
m_previousProgress = progress;
m_previousProgressTime = time;
m_sentStalledEvent = false;
if (renderer())
renderer()->updateFromElement();
if (hasMediaControls())
mediaControls()->bufferingProgressed();
}
}
void HTMLMediaElement::rewind(float timeDelta)
{
LOG(Media, "HTMLMediaElement::rewind(%f)", timeDelta);
ExceptionCode e;
setCurrentTime(max(currentTime() - timeDelta, minTimeSeekable()), e);
}
void HTMLMediaElement::returnToRealtime()
{
LOG(Media, "HTMLMediaElement::returnToRealtime");
ExceptionCode e;
setCurrentTime(maxTimeSeekable(), e);
}
void HTMLMediaElement::addPlayedRange(float start, float 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(float 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();
float 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 = min(time, duration());
// 6 - If the new playback position is less than the earliest possible position, let it be that position instead.
float earliestTime = m_player->startTime();
time = 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
float 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_sourceState != SOURCE_CLOSED)
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;
#if ENABLE(MEDIA_SOURCE)
if (m_sourceState == SOURCE_ENDED)
setSourceState(SOURCE_OPEN);
#endif
// 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_cachedTimeWallClockUpdateTime = WTF::currentTime();
}
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_minimumWallClockTimeToCacheMediaTime = WTF::currentTime() + minimumTimePlayingBeforeCacheSnapshot;
m_cachedTime = invalidMediaTime;
}
// playback state
float 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 != invalidMediaTime && m_paused) {
#if LOG_CACHED_TIME_WARNINGS
float 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 = WTF::currentTime();
double maximumDurationToCacheMediaTime = m_player->maximumDurationToCacheMediaTime();
if (maximumDurationToCacheMediaTime && m_cachedTime != invalidMediaTime && !m_paused && now > m_minimumWallClockTimeToCacheMediaTime) {
double wallClockDelta = now - m_cachedTimeWallClockUpdateTime;
// Not too soon, use the cached time only if it hasn't expired.
if (wallClockDelta < maximumDurationToCacheMediaTime) {
float adjustedCacheTime = static_cast<float>(m_cachedTime + (m_playbackRate * wallClockDelta));
#if LOG_CACHED_TIME_WARNINGS
float 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_minimumWallClockTimeToCacheMediaTime && m_cachedTime != invalidMediaTime) {
double wallClockDelta = now - m_cachedTimeWallClockUpdateTime;
float delta = m_cachedTime + (m_playbackRate * wallClockDelta) - 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(float time, ExceptionCode& ec)
{
if (m_mediaController) {
ec = INVALID_STATE_ERR;
return;
}
seek(time, ec);
}
float HTMLMediaElement::startTime() const
{
if (!m_player)
return 0;
return m_player->startTime();
}
double HTMLMediaElement::initialTime() const
{
if (m_fragmentStartTime != invalidMediaTime)
return m_fragmentStartTime;
if (!m_player)
return 0;
return m_player->initialTime();
}
float HTMLMediaElement::duration() const
{
if (m_player && m_readyState >= HAVE_METADATA)
return m_player->duration();
return numeric_limits<float>::quiet_NaN();
}
bool HTMLMediaElement::paused() const
{
return m_paused;
}
float HTMLMediaElement::defaultPlaybackRate() const
{
return m_defaultPlaybackRate;
}
void HTMLMediaElement::setDefaultPlaybackRate(float rate)
{
if (m_defaultPlaybackRate != rate) {
m_defaultPlaybackRate = rate;
scheduleEvent(eventNames().ratechangeEvent);
}
}
float HTMLMediaElement::playbackRate() const
{
return m_playbackRate;
}
void HTMLMediaElement::setPlaybackRate(float 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()
{
float effectiveRate = m_mediaController ? m_mediaController->playbackRate() : m_playbackRate;
if (m_player && potentiallyPlaying() && m_player->rate() != effectiveRate && !m_mediaController)
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 "none";
break;
case MediaPlayer::MetaData:
return "metadata";
break;
case MediaPlayer::Auto:
return "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)
scheduleLoad(MediaResource);
if (endedPlayback()) {
ExceptionCode unused;
seek(0, unused);
}
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)
scheduleLoad(MediaResource);
m_autoplaying = false;
if (!m_paused) {
m_paused = true;
scheduleTimeupdateEvent(false);
scheduleEvent(eventNames().pauseEvent);
}
updatePlayState();
}
#if ENABLE(MEDIA_SOURCE)
void HTMLMediaElement::webkitSourceAppend(PassRefPtr<Uint8Array> data, ExceptionCode& ec)
{
if (!m_player || m_currentSrc != m_mediaSourceURL || m_sourceState != SOURCE_OPEN) {
ec = INVALID_STATE_ERR;
return;
}
if (!data.get() || !m_player->sourceAppend(data->data(), data->length())) {
ec = SYNTAX_ERR;
return;
}
}
void HTMLMediaElement::webkitSourceEndOfStream(unsigned short status, ExceptionCode& ec)
{
if (!m_player || m_currentSrc != m_mediaSourceURL || m_sourceState != SOURCE_OPEN) {
ec = INVALID_STATE_ERR;
return;
}
MediaPlayer::EndOfStreamStatus eosStatus = MediaPlayer::EosNoError;
switch (status) {
case EOS_NO_ERROR:
eosStatus = MediaPlayer::EosNoError;
break;
case EOS_NETWORK_ERR:
eosStatus = MediaPlayer::EosNetworkError;
break;
case EOS_DECODE_ERR:
eosStatus = MediaPlayer::EosDecodeError;
break;
default:
ec = SYNTAX_ERR;
return;
}
setSourceState(SOURCE_ENDED);
m_player->sourceEndOfStream(eosStatus);
}
HTMLMediaElement::SourceState HTMLMediaElement::webkitSourceState() const
{
return m_sourceState;
}
void HTMLMediaElement::setSourceState(SourceState state)
{
SourceState oldState = m_sourceState;
m_sourceState = static_cast<SourceState>(state);
if (m_sourceState == oldState)
return;
if (m_sourceState == SOURCE_CLOSED) {
scheduleEvent(eventNames().webkitsourcecloseEvent);
return;
}
if (oldState == SOURCE_OPEN && m_sourceState == SOURCE_ENDED) {
scheduleEvent(eventNames().webkitsourceendedEvent);
return;
}
if (m_sourceState == SOURCE_OPEN) {
scheduleEvent(eventNames().webkitsourceopenEvent);
return;
}
}
#endif
bool HTMLMediaElement::loop() const
{
return fastHasAttribute(loopAttr);
}
void HTMLMediaElement::setLoop(bool b)
{
LOG(Media, "HTMLMediaElement::setLoop(%s)", boolString(b));
setBooleanAttribute(loopAttr, b);
#if PLATFORM(MAC)
updateDisableSleep();
#endif
}
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);
}
float HTMLMediaElement::volume() const
{
return m_volume;
}
void HTMLMediaElement::setVolume(float 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;
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;
static const double timeWithoutMouseMovementBeforeHidingControls = 3;
void HTMLMediaElement::startPlaybackProgressTimer()
{
if (m_playbackProgressTimer.isActive())
return;
m_previousProgressTime = WTF::currentTime();
m_previousProgress = 0;
m_playbackProgressTimer.startRepeating(maxTimeupdateEventFrequency);
}
void HTMLMediaElement::playbackProgressTimerFired(Timer<HTMLMediaElement>*)
{
ASSERT(m_player);
if (m_fragmentEndTime != invalidMediaTime && currentTime() >= m_fragmentEndTime && m_playbackRate > 0) {
m_fragmentEndTime = invalidMediaTime;
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)
updateActiveTextTrackCues(currentTime());
#endif
}
void HTMLMediaElement::scheduleTimeupdateEvent(bool periodicEvent)
{
double now = WTF::currentTime();
double timedelta = now - m_lastTimeUpdateEventWallTime;
// 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
float movieTime = currentTime();
if (movieTime != m_lastTimeUpdateEventMovieTime) {
scheduleEvent(eventNames().timeupdateEvent);
m_lastTimeUpdateEventWallTime = now;
m_lastTimeUpdateEventMovieTime = movieTime;
}
}
bool HTMLMediaElement::canPlay() const
{
return paused() || ended() || m_readyState < HAVE_METADATA;
}
float HTMLMediaElement::percentLoaded() const
{
if (!m_player)
return 0;
float duration = m_player->duration();
if (!duration || isinf(duration))
return 0;
float buffered = 0;
RefPtr<TimeRanges> timeRanges = m_player->buffered();
for (unsigned i = 0; i < timeRanges->length(); ++i) {
ExceptionCode ignoredException;
float start = timeRanges->start(i, ignoredException);
float end = timeRanges->end(i, ignoredException);
buffered += end - start;
}
return buffered / duration;
}
#if ENABLE(VIDEO_TRACK)
PassRefPtr<TextTrack> HTMLMediaElement::addTextTrack(const String& kind, const String& label, const String& language, ExceptionCode& ec)
{
if (!RuntimeEnabledFeatures::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.
RefPtr<TextTrack> textTrack = TextTrack::create(ActiveDOMObject::scriptExecutionContext(), this, kind, label, language);
// 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, its text track readiness state to the text track
// loaded state, its text track mode to the text track hidden mode, and its text track list of cues to an empty list.
// 6. Add the new text track to the media element's list of text tracks.
textTracks()->append(textTrack);
return textTrack.release();
}
TextTrackList* HTMLMediaElement::textTracks()
{
if (!RuntimeEnabledFeatures::webkitVideoTrackEnabled())
return 0;
if (!m_textTracks)
m_textTracks = TextTrackList::create(this, ActiveDOMObject::scriptExecutionContext());
return m_textTracks.get();
}
HTMLTrackElement* HTMLMediaElement::showingTrackWithSameKind(HTMLTrackElement* trackElement) const
{
for (Node* node = firstChild(); node; node = node->nextSibling()) {
if (trackElement == node)
continue;
if (!node->hasTagName(trackTag))
continue;
HTMLTrackElement* showingTrack = static_cast<HTMLTrackElement*>(node);
if (showingTrack->kind() == trackElement->kind() && showingTrack->track()->mode() == TextTrack::SHOWING)
return showingTrack;
}
return 0;
}
void HTMLMediaElement::trackWasAdded(HTMLTrackElement* trackElement)
{
ASSERT(trackElement->hasTagName(trackTag));
if (!RuntimeEnabledFeatures::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;
textTracks()->append(textTrack);
// 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)
scheduleLoad(TextTrackResource);
}
void HTMLMediaElement::trackWasRemoved(HTMLTrackElement* trackElement)
{
ASSERT(trackElement->hasTagName(trackTag));
if (!RuntimeEnabledFeatures::webkitVideoTrackEnabled())
return;
#if !LOG_DISABLED
if (trackElement->hasTagName(trackTag)) {
KURL url = trackElement->getNonEmptyURLAttribute(srcAttr);
LOG(Media, "HTMLMediaElement::trackWasRemoved - 'src' is %s", urlForLogging(url).utf8().data());
}
#endif
trackElement->setHasBeenConfigured(false);
RefPtr<TextTrack> textTrack = trackElement->track();
if (!textTrack)
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.
m_textTracks->remove(textTrack.get());
size_t index = m_textTracksWhenResourceSelectionBegan.find(textTrack.get());
if (index != notFound)
m_textTracksWhenResourceSelectionBegan.remove(index);
}
bool HTMLMediaElement::userIsInterestedInThisLanguage(const String&) const
{
// FIXME: check the user's language preference - bugs.webkit.org/show_bug.cgi?id=74121
return true;
}
bool HTMLMediaElement::userIsInterestedInThisTrackKind(String kind) const
{
// If ... the user has indicated an interest in having a track with this text track kind, text track language, ...
Settings* settings = document()->settings();
if (!settings)
return false;
if (kind == TextTrack::subtitlesKeyword())
return settings->shouldDisplaySubtitles();
if (kind == TextTrack::captionsKeyword())
return settings->shouldDisplayCaptions();
if (kind == TextTrack::descriptionsKeyword())
return settings->shouldDisplayTextDescriptions();
return false;
}
void HTMLMediaElement::configureTextTrackGroup(const TrackGroup& group) const
{
ASSERT(group.tracks.size());
String bestMatchingLanguage;
if (group.hasSrcLang) {
Vector<String> languages;
languages.reserveInitialCapacity(group.tracks.size());
for (size_t i = 0; i < group.tracks.size(); ++i) {
String srcLanguage = group.tracks[i]->track()->language();
if (srcLanguage.length())
languages.append(srcLanguage);
}
bestMatchingLanguage = preferredLanguageFromList(languages);
}
// First, find the track in the group that should be enabled (if any).
HTMLTrackElement* trackElementToEnable = 0;
HTMLTrackElement* defaultTrack = 0;
HTMLTrackElement* fallbackTrack = 0;
for (size_t i = 0; !trackElementToEnable && i < group.tracks.size(); ++i) {
HTMLTrackElement* trackElement = group.tracks[i];
RefPtr<TextTrack> textTrack = trackElement->track();
if (userIsInterestedInThisTrackKind(textTrack->kind())) {
// * 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 (bestMatchingLanguage.length()) {
if (textTrack->language() == bestMatchingLanguage)
trackElementToEnable = trackElement;
} else if (trackElement->isDefault()) {
// The user is interested in this type of track, but their language preference doesn't match any track so we will
// enable the 'default' track.
defaultTrack = trackElement;
}
// Remember the first track that doesn't match language or have 'default' to potentially use as fallback.
if (!fallbackTrack)
fallbackTrack = trackElement;
} else if (!group.visibleTrack && !defaultTrack && trackElement->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.
defaultTrack = trackElement;
}
}
if (!trackElementToEnable && defaultTrack)
trackElementToEnable = defaultTrack;
// 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 (!trackElementToEnable && fallbackTrack)
trackElementToEnable = fallbackTrack;
for (size_t i = 0; i < group.tracks.size(); ++i) {
HTMLTrackElement* trackElement = group.tracks[i];
RefPtr<TextTrack> textTrack = trackElement->track();
ExceptionCode unusedException;
if (trackElementToEnable == trackElement) {
textTrack->setMode(TextTrack::SHOWING, unusedException);
if (defaultTrack == trackElement)
textTrack->setShowingByDefault(true);
} else {
if (textTrack->showingByDefault()) {
// If there is a text track in the media element's list of text tracks whose text track
// mode is showing by default, the user agent must furthermore change that text track's
// text track mode to hidden.
textTrack->setShowingByDefault(false);
textTrack->setMode(TextTrack::HIDDEN, unusedException);
} else
textTrack->setMode(TextTrack::DISABLED, unusedException);
}
}
if (trackElementToEnable && group.defaultTrack && group.defaultTrack != trackElementToEnable) {
RefPtr<TextTrack> textTrack = group.defaultTrack->track();
if (textTrack && textTrack->showingByDefault()) {
ExceptionCode unusedException;
textTrack->setShowingByDefault(false);
textTrack->setMode(TextTrack::HIDDEN, unusedException);
}
}
}
void HTMLMediaElement::configureNewTextTracks()
{
TrackGroup captionAndSubtitleTracks(TrackGroup::CaptionsAndSubtitles);
TrackGroup descriptionTracks(TrackGroup::Description);
TrackGroup chapterTracks(TrackGroup::Chapter);
TrackGroup metadataTracks(TrackGroup::Metadata);
TrackGroup otherTracks(TrackGroup::Other);
for (Node* node = firstChild(); node; node = node->nextSibling()) {
if (!node->hasTagName(trackTag))
continue;
HTMLTrackElement* trackElement = static_cast<HTMLTrackElement*>(node);
RefPtr<TextTrack> textTrack = trackElement->track();
if (!textTrack)
continue;
String kind = textTrack->kind();
TrackGroup* currentGroup;
if (kind == TextTrack::subtitlesKeyword() || kind == TextTrack::captionsKeyword())
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::SHOWING)
currentGroup->visibleTrack = trackElement;
if (!currentGroup->defaultTrack && trackElement->isDefault())
currentGroup->defaultTrack = trackElement;
// 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 (trackElement->hasBeenConfigured())
continue;
if (textTrack->language().length())
currentGroup->hasSrcLang = true;
currentGroup->tracks.append(trackElement);
}
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);
}
#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.
HTMLSourceElement* currentSourceNode = m_currentSourceNode;
Node* nextNode = m_nextChildNodeToConsider;
KURL nextURL = selectNextSourceChild(0, DoNothing);
m_currentSourceNode = currentSourceNode;
m_nextChildNodeToConsider = nextNode;
return nextURL.isValid();
}
KURL HTMLMediaElement::selectNextSourceChild(ContentType *contentType, 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 == sourceChildEndOfListValue()) {
#if !LOG_DISABLED
if (shouldLog)
LOG(Media, "HTMLMediaElement::selectNextSourceChild -> 0x0000, \"\"");
#endif
return KURL();
}
KURL mediaURL;
Node* node;
HTMLSourceElement* source = 0;
bool lookingForStartNode = m_nextChildNodeToConsider;
bool canUse = false;
String type;
for (node = firstChild(); !canUse && node; node = node->nextSibling()) {
if (lookingForStartNode && m_nextChildNodeToConsider != node)
continue;
lookingForStartNode = false;
if (!node->hasTagName(sourceTag))
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", urlForLogging(mediaURL).utf8().data());
#endif
if (mediaURL.isEmpty())
goto check_again;
if (source->fastHasAttribute(mediaAttr)) {
MediaQueryEvaluator screenEval("screen", document()->frame(), renderer() ? renderer()->style() : 0);
RefPtr<MediaList> media = MediaList::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();
if (type.isEmpty() && mediaURL.protocolIsData())
type = mimeTypeFromDataURL(mediaURL);
if (!type.isEmpty()) {
#if !LOG_DISABLED
if (shouldLog)
LOG(Media, "HTMLMediaElement::selectNextSourceChild - 'type' is %s", type.utf8().data());
#endif
if (!MediaPlayer::supportsType(ContentType(type)))
goto check_again;
}
// Is it safe to load this url?
if (!isSafeToLoadURL(mediaURL, actionIfInvalid) || !dispatchBeforeLoadEvent(mediaURL.string()))
goto check_again;
// Making it this far means the <source> looks reasonable.
canUse = true;
check_again:
if (!canUse && actionIfInvalid == Complain)
source->scheduleErrorEvent();
}
if (canUse) {
if (contentType)
*contentType = ContentType(type);
m_currentSourceNode = source;
m_nextChildNodeToConsider = source->nextSibling();
if (!m_nextChildNodeToConsider)
m_nextChildNodeToConsider = sourceChildEndOfListValue();
} else {
m_currentSourceNode = 0;
m_nextChildNodeToConsider = sourceChildEndOfListValue();
}
#if !LOG_DISABLED
if (shouldLog)
LOG(Media, "HTMLMediaElement::selectNextSourceChild -> %p, %s", m_currentSourceNode, canUse ? urlForLogging(mediaURL).utf8().data() : "");
#endif
return canUse ? mediaURL : KURL();
}
void HTMLMediaElement::sourceWasAdded(HTMLSourceElement* source)
{
LOG(Media, "HTMLMediaElement::sourceWasAdded(%p)", source);
#if !LOG_DISABLED
if (source->hasTagName(sourceTag)) {
KURL url = source->getNonEmptyURLAttribute(srcAttr);
LOG(Media, "HTMLMediaElement::sourceWasAdded - 'src' is %s", urlForLogging(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) {
scheduleLoad(MediaResource);
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 != sourceChildEndOfListValue())
return;
// 4.8.9.5, resource selection algorithm, source elements section:
// 20 - Wait until the node after pointer is a node other than the end of the list. (This step might wait forever.)
// 21 - Asynchronously await a stable state...
// 22 - 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);
// 23 - Set the networkState back to NETWORK_LOADING.
m_networkState = NETWORK_LOADING;
// 24 - Jump back to the find next candidate step above.
m_nextChildNodeToConsider = source;
scheduleNextSourceChild();
}
void HTMLMediaElement::sourceWillBeRemoved(HTMLSourceElement* source)
{
LOG(Media, "HTMLMediaElement::sourceWillBeRemoved(%p)", source);
#if !LOG_DISABLED
if (source->hasTagName(sourceTag)) {
KURL url = source->getNonEmptyURLAttribute(srcAttr);
LOG(Media, "HTMLMediaElement::sourceWillBeRemoved - 'src' is %s", urlForLogging(url).utf8().data());
}
#endif
if (source != m_currentSourceNode && source != m_nextChildNodeToConsider)
return;
if (source == m_nextChildNodeToConsider) {
m_nextChildNodeToConsider = m_nextChildNodeToConsider->nextSibling();
if (!m_nextChildNodeToConsider)
m_nextChildNodeToConsider = sourceChildEndOfListValue();
LOG(Media, "HTMLMediaElement::sourceRemoved - m_nextChildNodeToConsider set to %p", m_nextChildNodeToConsider);
} 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)
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)
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);
float now = currentTime();
float 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 (!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) {
ExceptionCode ignoredException;
m_sentEndEvent = false;
// then seek to the earliest possible position of the media resource and abort these steps.
seek(startTime(), ignoredException);
} 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) {
float 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);
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();
#if PLATFORM(MAC)
updateDisableSleep();
#endif
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 (ownerDocument()->isMediaDocument()) {
MediaDocument* mediaDocument = static_cast<MediaDocument*>(ownerDocument());
mediaDocument->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()) {
ASSERT(renderer()->view());
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
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 (hasMediaControls())
mediaControls()->reset();
if (renderer())
renderer()->updateFromElement();
endProcessingMediaPlayerCallback();
}
PassRefPtr<TimeRanges> HTMLMediaElement::buffered() const
{
if (!m_player)
return TimeRanges::create();
return m_player->buffered();
}
PassRefPtr<TimeRanges> HTMLMediaElement::played()
{
if (m_playing) {
float 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
{
float dur = duration();
if (!m_player || 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.
float 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;
}
float HTMLMediaElement::minTimeSeekable() const
{
return 0;
}
float 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();
float volumeMultiplier = page ? page->mediaVolume() : 1;
bool shouldMute = m_muted;
if (m_mediaController) {
volumeMultiplier *= m_mediaController->volume();
shouldMute = m_mediaController->muted();
}
m_player->setMuted(shouldMute);
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();
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() && 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();
startPlaybackProgressTimer();
m_playing = true;
} else { // Should not be playing right now
if (!playerPaused)
m_player->pause();
refreshCachedTime();
m_playbackProgressTimer.stop();
m_playing = false;
float time = currentTime();
if (time > m_lastSeekTime)
addPlayedRange(m_lastSeekTime, time);
if (couldPlayIfEnoughData())
prepareToPlay();
if (hasMediaControls())
mediaControls()->playbackStopped();
}
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.
#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
m_player.clear();
#endif
stopPeriodicTimers();
m_loadTimer.stop();
m_loadState = WaitingForSource;
// 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)
if (m_sourceState != SOURCE_CLOSED)
setSourceState(SOURCE_CLOSED);
#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)
updateActiveTextTrackCues(0);
#endif
}
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
setPausedInternal(true);
if (renderer())
renderer()->updateFromElement();
stopPeriodicTimers();
cancelPendingEventsAndCallbacks();
}
void HTMLMediaElement::suspend(ReasonForSuspension why)
{
LOG(Media, "HTMLMediaElement::suspend");
switch (why)
{
case DocumentWillBecomeInactive:
stop();
break;
case PageWillBeSuspended:
case JavaScriptDebuggerPaused:
case WillShowDialog:
// Do nothing, we don't pause media playback in these cases.
break;
}
}
void HTMLMediaElement::resume()
{
LOG(Media, "HTMLMediaElement::resume");
m_inActiveDocument = true;
setPausedInternal(false);
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.
ExceptionCode ec;
load(ec);
}
if (renderer())
renderer()->updateFromElement();
}
bool HTMLMediaElement::hasPendingActivity() const
{
return m_asyncEventQueue.hasPendingEvents();
}
void HTMLMediaElement::mediaVolumeDidChange()
{
LOG(Media, "HTMLMediaElement::mediaVolumeDidChange");
updateVolume();
}
void HTMLMediaElement::defaultEventHandler(Event* event)
{
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
RenderObject* r = renderer();
if (!r || !r->isWidget())
return;
Widget* widget = toRenderWidget(r)->widget();
if (widget)
widget->handleEvent(event);
#else
HTMLElement::defaultEventHandler(event);
#endif
}
#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(KURL& url, Vector<String>& names, Vector<String>& values)
{
Frame* frame = document()->frame();
if (isVideo()) {
KURL posterURL = getNonEmptyURLAttribute(posterAttr);
if (!posterURL.isEmpty() && frame && frame->loader()->willLoadMediaElementURL(posterURL)) {
names.append("_media_element_poster_");
values.append(posterURL.string());
}
}
if (controls()) {
names.append("_media_element_controls_");
values.append("true");
}
url = src();
if (!isSafeToLoadURL(url, Complain))
url = selectNextSourceChild(0, DoNothing);
m_currentSrc = url;
if (url.isValid() && frame && frame->loader()->willLoadMediaElementURL(url)) {
names.append("_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");
KURL 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.
KURL 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::enterFullscreen()
{
LOG(Media, "HTMLMediaElement::enterFullscreen");
#if ENABLE(FULLSCREEN_API)
if (document() && document()->settings() && document()->settings()->fullScreenEnabled()) {
document()->requestFullScreenForElement(this, 0, Document::ExemptIFrameAllowFulScreenRequirement);
return;
}
#endif
ASSERT(!m_isFullscreen);
m_isFullscreen = true;
if (hasMediaControls())
mediaControls()->enteredFullscreen();
if (document() && document()->page()) {
document()->page()->chrome()->client()->enterFullscreenForNode(this);
scheduleEvent(eventNames().webkitbeginfullscreenEvent);
}
}
void HTMLMediaElement::exitFullscreen()
{
LOG(Media, "HTMLMediaElement::exitFullscreen");
#if ENABLE(FULLSCREEN_API)
if (document() && 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() && 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
{
return m_player && m_player->hasClosedCaptions();
}
bool HTMLMediaElement::closedCaptionsVisible() const
{
return m_closedCaptionsVisible;
}
void HTMLMediaElement::setClosedCaptionsVisible(bool closedCaptionVisible)
{
LOG(Media, "HTMLMediaElement::setClosedCaptionsVisible(%s)", boolString(closedCaptionVisible));
if (!m_player ||!hasClosedCaptions())
return;
m_closedCaptionsVisible = closedCaptionVisible;
m_player->setClosedCaptionsVisible(closedCaptionVisible);
if (hasMediaControls())
mediaControls()->changedClosedCaptionsVisibility();
}
void HTMLMediaElement::setWebkitClosedCaptionsVisible(bool visible)
{
setClosedCaptionsVisible(visible);
}
bool HTMLMediaElement::webkitClosedCaptionsVisible() const
{
return 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_isWaitingUntilMediaCanStart = false;
loadInternal();
}
bool HTMLMediaElement::isURLAttribute(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::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()
{
return toMediaControls(shadowTree()->oldestShadowRoot()->firstChild());
}
bool HTMLMediaElement::hasMediaControls()
{
if (!hasShadowRoot())
return false;
Node* node = shadowTree()->oldestShadowRoot()->firstChild();
return node && node->isMediaControls();
}
bool HTMLMediaElement::createMediaControls()
{
if (hasMediaControls())
return true;
ExceptionCode ec;
RefPtr<MediaControls> controls = MediaControls::create(document());
if (!controls)
return false;
controls->setMediaController(m_mediaController ? m_mediaController.get() : static_cast<MediaControllerInterface*>(this));
controls->reset();
if (isFullscreen())
controls->enteredFullscreen();
ensureShadowRoot()->appendChild(controls, ec);
return true;
}
void HTMLMediaElement::configureMediaControls()
{
#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
if (!controls()) {
if (hasMediaControls())
mediaControls()->hide();
return;
}
if (!hasMediaControls() && !createMediaControls())
return;
mediaControls()->show();
#else
if (m_player)
m_player->setControls(controls());
#endif
}
#if ENABLE(VIDEO_TRACK)
void HTMLMediaElement::configureTextTrackDisplay()
{
ASSERT(m_textTracks);
bool haveVisibleTextTrack = false;
for (unsigned i = 0; i < m_textTracks->length(); ++i) {
if (m_textTracks->item(i)->mode() == TextTrack::SHOWING) {
haveVisibleTextTrack = true;
break;
}
}
if (m_haveVisibleTextTrack == haveVisibleTextTrack)
return;
m_haveVisibleTextTrack = haveVisibleTextTrack;
if (!m_haveVisibleTextTrack && !hasMediaControls())
return;
if (!hasMediaControls() && !createMediaControls())
return;
mediaControls()->updateTextTrackDisplay();
}
#endif
void* HTMLMediaElement::preDispatchEventHandler(Event* event)
{
if (event && event->type() == eventNames().webkitfullscreenchangeEvent)
configureMediaControls();
return 0;
}
void HTMLMediaElement::createMediaPlayer()
{
#if ENABLE(WEB_AUDIO)
if (m_audioSourceNode)
m_audioSourceNode->lock();
#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
#if ENABLE(MICRODATA)
String HTMLMediaElement::itemValueText() const
{
return getURLAttribute(srcAttr);
}
void HTMLMediaElement::setItemValueText(const String& value, ExceptionCode&)
{
setAttribute(srcAttr, value);
}
#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(Node::scriptExecutionContext()));
}
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.
float mediaControllerPosition = m_mediaController->currentTime();
if (mediaControllerPosition < startTime() || mediaControllerPosition > startTime() + duration())
return true;
return false;
}
void HTMLMediaElement::prepareMediaFragmentURI()
{
MediaFragmentURIParser fragmentParser(m_currentSrc);
float 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 = invalidMediaTime;
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 = invalidMediaTime;
if (m_fragmentStartTime != invalidMediaTime && m_readyState < HAVE_FUTURE_DATA)
prepareToPlay();
}
void HTMLMediaElement::applyMediaFragmentURI()
{
if (m_fragmentStartTime != invalidMediaTime) {
ExceptionCode ignoredException;
m_sentEndEvent = false;
seek(m_fragmentStartTime, ignoredException);
}
}
#if PLATFORM(MAC)
void HTMLMediaElement::updateDisableSleep()
{
if (!shouldDisableSleep() && m_sleepDisabler)
m_sleepDisabler = nullptr;
else if (shouldDisableSleep() && !m_sleepDisabler)
m_sleepDisabler = DisplaySleepDisabler::create("com.apple.WebCore: HTMLMediaElement playback");
}
bool HTMLMediaElement::shouldDisableSleep() const
{
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);
}
void HTMLMediaElement::removeBehaviorsRestrictionsAfterFirstUserGesture()
{
m_restrictions = NoRestrictions;
}
}
#endif