HTMLMediaElement.cpp [plain text]
#include "config.h"
#if ENABLE(VIDEO)
#include "HTMLMediaElement.h"
#include "ContentType.h"
#include "CSSHelper.h"
#include "CSSPropertyNames.h"
#include "CSSValueKeywords.h"
#include "DocLoader.h"
#include "Event.h"
#include "EventNames.h"
#include "ExceptionCode.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "HTMLDocument.h"
#include "HTMLNames.h"
#include "HTMLSourceElement.h"
#include "HTMLVideoElement.h"
#include <limits>
#include "MediaError.h"
#include "MediaList.h"
#include "MediaQueryEvaluator.h"
#include "MIMETypeRegistry.h"
#include "MediaPlayer.h"
#include "Page.h"
#include "ProgressEvent.h"
#include "RenderVideo.h"
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
#include "RenderPartObject.h"
#endif
#include "TimeRanges.h"
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
#include "Widget.h"
#endif
#include <wtf/CurrentTime.h>
#include <wtf/MathExtras.h>
#include <limits>
using namespace std;
namespace WebCore {
using namespace HTMLNames;
HTMLMediaElement::HTMLMediaElement(const QualifiedName& tagName, Document* doc)
: HTMLElement(tagName, doc)
, m_loadTimer(this, &HTMLMediaElement::loadTimerFired)
, m_asyncEventTimer(this, &HTMLMediaElement::asyncEventTimerFired)
, m_progressEventTimer(this, &HTMLMediaElement::progressEventTimerFired)
, m_playbackProgressTimer(this, &HTMLMediaElement::playbackProgressTimerFired)
, m_playbackRate(1.0f)
, m_defaultPlaybackRate(1.0f)
, m_networkState(NETWORK_EMPTY)
, m_readyState(HAVE_NOTHING)
, m_volume(1.0f)
, m_currentTimeDuringSeek(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_player(0)
, m_restrictions(NoRestrictions)
, m_processingMediaPlayerCallback(0)
, m_processingLoad(false)
, m_delayingTheLoadEvent(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)
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
, m_needWidgetUpdate(false)
#endif
, m_inFullScreen(false)
, m_requestingPlay(false)
{
m_sendProgressEvents = false;
m_restrictions = RequireUserGestureForRateChangeRestriction;
document()->registerForDocumentActivationCallbacks(this);
document()->registerForMediaVolumeCallbacks(this);
}
HTMLMediaElement::~HTMLMediaElement()
{
document()->unregisterForDocumentActivationCallbacks(this);
document()->unregisterForMediaVolumeCallbacks(this);
}
bool HTMLMediaElement::checkDTD(const Node* newChild)
{
return newChild->hasTagName(sourceTag) || HTMLElement::checkDTD(newChild);
}
void HTMLMediaElement::attributeChanged(Attribute* attr, bool preserveDecls)
{
HTMLElement::attributeChanged(attr, preserveDecls);
const QualifiedName& attrName = attr->name();
if (attrName == srcAttr) {
if (inDocument() && m_loadState == WaitingForSource) {
scheduleLoad();
}
}
#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
else if (attrName == controlsAttr) {
if (!isVideo() && attached() && (controls() != (renderer() != 0))) {
detach();
attach();
}
if (renderer())
renderer()->updateFromElement();
}
#endif
}
void HTMLMediaElement::parseMappedAttribute(MappedAttribute *attr)
{
if (attr->name() == autobufferAttr) {
if (m_player)
m_player->setAutobuffer(!attr->isNull());
} else
HTMLElement::parseMappedAttribute(attr);
}
bool HTMLMediaElement::rendererIsNeeded(RenderStyle* style)
{
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
UNUSED_PARAM(style);
Frame* frame = document()->frame();
if (!frame)
return false;
return true;
#else
return controls() ? HTMLElement::rendererIsNeeded(style) : false;
#endif
}
RenderObject* HTMLMediaElement::createRenderer(RenderArena* arena, RenderStyle*)
{
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
return new (arena) RenderPartObject(this);
#else
return new (arena) RenderMedia(this);
#endif
}
void HTMLMediaElement::insertedIntoDocument()
{
HTMLElement::insertedIntoDocument();
}
void HTMLMediaElement::removedFromDocument()
{
if (m_networkState > NETWORK_EMPTY)
pause();
HTMLElement::removedFromDocument();
}
void HTMLMediaElement::attach()
{
ASSERT(!attached());
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
m_needWidgetUpdate = true;
#endif
HTMLElement::attach();
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::recalcStyle(StyleChange change)
{
HTMLElement::recalcStyle(change);
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::scheduleLoad()
{
m_loadTimer.startOneShot(0);
}
void HTMLMediaElement::scheduleProgressEvent(const AtomicString& eventName)
{
if (!m_sendProgressEvents)
return;
bool totalKnown = m_player && m_player->totalBytesKnown();
unsigned loaded = m_player ? m_player->bytesLoaded() : 0;
unsigned total = m_player ? m_player->totalBytes() : 0;
RefPtr<ProgressEvent> evt = ProgressEvent::create(eventName, totalKnown, loaded, total);
enqueueEvent(evt);
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::scheduleEvent(const AtomicString& eventName)
{
enqueueEvent(Event::create(eventName, false, true));
}
void HTMLMediaElement::enqueueEvent(RefPtr<Event> event)
{
m_pendingEvents.append(event);
if (!m_asyncEventTimer.isActive())
m_asyncEventTimer.startOneShot(0);
}
void HTMLMediaElement::asyncEventTimerFired(Timer<HTMLMediaElement>*)
{
Vector<RefPtr<Event> > pendingEvents;
ExceptionCode ec = 0;
m_pendingEvents.swap(pendingEvents);
unsigned count = pendingEvents.size();
for (unsigned ndx = 0; ndx < count; ++ndx)
dispatchEvent(pendingEvents[ndx].release(), ec);
}
void HTMLMediaElement::loadTimerFired(Timer<HTMLMediaElement>*)
{
if (m_loadState == LoadingFromSourceElement)
loadNextSourceChild();
else
loadInternal();
}
static String serializeTimeOffset(float time)
{
String timeString = String::number(time);
timeString.append("s");
return timeString;
}
static float parseTimeOffset(const String& timeString, bool* ok = 0)
{
const UChar* characters = timeString.characters();
unsigned length = timeString.length();
if (length && characters[length - 1] == 's')
length--;
float val = charactersToFloat(characters, length, ok);
return val;
}
float HTMLMediaElement::getTimeOffsetAttribute(const QualifiedName& name, float valueOnError) const
{
bool ok;
String timeString = getAttribute(name);
float result = parseTimeOffset(timeString, &ok);
if (ok)
return result;
return valueOnError;
}
void HTMLMediaElement::setTimeOffsetAttribute(const QualifiedName& name, float value)
{
setAttribute(name, serializeTimeOffset(value));
}
PassRefPtr<MediaError> HTMLMediaElement::error() const
{
return m_error;
}
KURL HTMLMediaElement::src() const
{
return document()->completeURL(getAttribute(srcAttr));
}
void HTMLMediaElement::setSrc(const String& url)
{
setAttribute(srcAttr, url);
}
String HTMLMediaElement::currentSrc() const
{
return m_currentSrc;
}
HTMLMediaElement::NetworkState HTMLMediaElement::networkState() const
{
return m_networkState;
}
String HTMLMediaElement::canPlayType(const String& mimeType) const
{
MediaPlayer::SupportsType support = MediaPlayer::supportsType(ContentType(mimeType));
String canPlay;
switch (support)
{
case MediaPlayer::IsNotSupported:
canPlay = "no";
break;
case MediaPlayer::MayBeSupported:
canPlay = "maybe";
break;
case MediaPlayer::IsSupported:
canPlay = "probably";
break;
}
return canPlay;
}
void HTMLMediaElement::load(ExceptionCode& ec)
{
bool allowedToLoad = !(m_restrictions & RequireUserGestureForLoadRestriction && !processingUserGesture());
if (!allowedToLoad)
ec = INVALID_STATE_ERR;
else
loadInternal();
}
void HTMLMediaElement::loadInternal()
{
if (m_processingLoad)
return;
m_processingLoad = true;
stopPeriodicTimers();
m_loadTimer.stop();
m_sentStalledEvent = false;
m_haveFiredLoadedData = false;
m_currentSourceNode = 0;
m_pendingEvents.clear();
if (m_networkState == NETWORK_LOADING || m_networkState == NETWORK_IDLE) {
m_error = MediaError::create(MediaError::MEDIA_ERR_ABORTED);
bool totalKnown = m_player && m_player->totalBytesKnown();
unsigned loaded = m_player ? m_player->bytesLoaded() : 0;
unsigned total = m_player ? m_player->totalBytes() : 0;
dispatchProgressEvent(eventNames().abortEvent, totalKnown, loaded, total);
}
m_error = 0;
m_autoplaying = true;
setPlaybackRate(defaultPlaybackRate());
if (m_networkState != NETWORK_EMPTY) {
m_networkState = NETWORK_EMPTY;
m_readyState = HAVE_NOTHING;
m_paused = true;
m_seeking = false;
if (m_player) {
m_player->pause();
m_player->seek(0);
}
dispatchEventForType(eventNames().emptiedEvent, false, true);
}
selectMediaResource();
m_processingLoad = false;
}
void HTMLMediaElement::selectMediaResource()
{
String mediaSrc = getAttribute(srcAttr);
if (!mediaSrc && !havePotentialSourceChild()) {
m_loadState = WaitingForSource;
m_networkState = NETWORK_NO_SOURCE;
m_delayingTheLoadEvent = false;
return;
}
m_delayingTheLoadEvent = true;
m_networkState = NETWORK_LOADING;
scheduleProgressEvent(eventNames().loadstartEvent);
ContentType contentType("");
if (!mediaSrc.isEmpty()) {
mediaSrc = document()->completeURL(mediaSrc).string();
m_loadState = LoadingFromSrcAttr;
loadResource(mediaSrc, contentType);
return;
}
m_currentSourceNode = 0;
loadNextSourceChild();
}
void HTMLMediaElement::loadNextSourceChild()
{
ContentType contentType("");
String mediaSrc;
mediaSrc = nextSourceChild(&contentType);
if (mediaSrc.isEmpty()) {
noneSupported();
return;
}
m_loadState = LoadingFromSourceElement;
loadResource(mediaSrc, contentType);
}
void HTMLMediaElement::loadResource(String url, ContentType& contentType)
{
Frame* frame = document()->frame();
FrameLoader* loader = frame ? frame->loader() : 0;
if (!loader || !loader->canLoad(KURL(KURL(), url), String(), document())) {
FrameLoader::reportLocalLoadFailed(frame, url);
if (m_loadState == LoadingFromSourceElement && havePotentialSourceChild())
scheduleLoad();
else
noneSupported();
return;
}
m_networkState = NETWORK_LOADING;
m_currentSrc = url;
if (m_sendProgressEvents)
startProgressEventTimer();
#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
m_player.clear();
m_player.set(new MediaPlayer(this));
#else
if (!m_player)
m_player.set(new MediaPlayer(this));
#endif
updateVolume();
m_player->load(m_currentSrc, contentType);
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::startProgressEventTimer()
{
if (m_progressEventTimer.isActive())
return;
m_previousProgressTime = WTF::currentTime();
m_previousProgress = 0;
m_progressEventTimer.startRepeating(0.350);
}
void HTMLMediaElement::noneSupported()
{
stopPeriodicTimers();
m_loadState = WaitingForSource;
m_currentSourceNode = 0;
m_error = MediaError::create(MediaError::MEDIA_ERR_NONE_SUPPORTED);
m_networkState = NETWORK_NO_SOURCE;
scheduleProgressEvent(eventNames().errorEvent);
m_delayingTheLoadEvent = false;
if (isVideo())
static_cast<HTMLVideoElement*>(this)->updatePosterImage();
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::mediaEngineError(PassRefPtr<MediaError> err)
{
stopPeriodicTimers();
m_loadState = WaitingForSource;
m_error = err;
scheduleProgressEvent(eventNames().errorEvent);
m_networkState = NETWORK_EMPTY;
scheduleEvent(eventNames().emptiedEvent);
m_delayingTheLoadEvent = false;
m_currentSourceNode = 0;
}
void HTMLMediaElement::mediaPlayerNetworkStateChanged(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
setNetworkState(m_player->networkState());
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::setNetworkState(MediaPlayer::NetworkState state)
{
if (state == MediaPlayer::Empty) {
m_networkState = NETWORK_EMPTY;
return;
}
if (state == MediaPlayer::FormatError || state == MediaPlayer::NetworkError || state == MediaPlayer::DecodeError) {
stopPeriodicTimers();
if (m_readyState < HAVE_METADATA && m_loadState == LoadingFromSourceElement && havePotentialSourceChild()) {
scheduleLoad();
return;
}
if (state == MediaPlayer::NetworkError)
mediaEngineError(MediaError::create(MediaError::MEDIA_ERR_NETWORK));
else if (state == MediaPlayer::DecodeError)
mediaEngineError(MediaError::create(MediaError::MEDIA_ERR_DECODE));
else if (state == MediaPlayer::FormatError)
noneSupported();
if (isVideo())
static_cast<HTMLVideoElement*>(this)->updatePosterImage();
return;
}
if (state == MediaPlayer::Idle) {
ASSERT(static_cast<ReadyState>(m_player->readyState()) < HAVE_ENOUGH_DATA);
if (m_networkState > NETWORK_IDLE) {
stopPeriodicTimers();
scheduleProgressEvent(eventNames().suspendEvent);
}
m_networkState = NETWORK_IDLE;
}
if (state == MediaPlayer::Loading) {
ASSERT(static_cast<ReadyState>(m_player->readyState()) < HAVE_ENOUGH_DATA);
if (m_networkState < NETWORK_LOADING || m_networkState == NETWORK_NO_SOURCE)
startProgressEventTimer();
m_networkState = NETWORK_LOADING;
}
if (state == MediaPlayer::Loaded) {
NetworkState oldState = m_networkState;
m_networkState = NETWORK_LOADED;
if (oldState < NETWORK_LOADED || oldState == NETWORK_NO_SOURCE) {
m_progressEventTimer.stop();
MediaPlayer::ReadyState currentState = m_player->readyState();
if (static_cast<ReadyState>(currentState) != m_readyState)
setReadyState(currentState);
scheduleProgressEvent(eventNames().loadEvent);
}
}
}
void HTMLMediaElement::mediaPlayerReadyStateChanged(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
setReadyState(m_player->readyState());
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::setReadyState(MediaPlayer::ReadyState state)
{
bool wasPotentiallyPlaying = potentiallyPlaying();
ReadyState oldState = m_readyState;
m_readyState = static_cast<ReadyState>(state);
if (m_readyState == oldState)
return;
if (m_readyState >= HAVE_CURRENT_DATA)
m_seeking = false;
if (m_networkState == NETWORK_EMPTY)
return;
if (m_seeking && m_readyState < HAVE_CURRENT_DATA) {
scheduleEvent(eventNames().seekingEvent);
m_seeking = false;
}
if (wasPotentiallyPlaying && m_readyState < HAVE_FUTURE_DATA) {
scheduleTimeupdateEvent(false);
scheduleEvent(eventNames().waitingEvent);
}
if (m_readyState >= HAVE_METADATA && oldState < HAVE_METADATA) {
scheduleEvent(eventNames().durationchangeEvent);
scheduleEvent(eventNames().loadedmetadataEvent);
#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
if (renderer() && !renderer()->isImage()) {
static_cast<RenderVideo*>(renderer())->videoSizeChanged();
}
#endif
m_delayingTheLoadEvent = false;
m_player->seek(0);
}
if (m_readyState >= HAVE_CURRENT_DATA && oldState < HAVE_CURRENT_DATA && !m_haveFiredLoadedData) {
m_haveFiredLoadedData = true;
scheduleEvent(eventNames().loadeddataEvent);
}
bool isPotentiallyPlaying = potentiallyPlaying();
if (m_readyState == HAVE_FUTURE_DATA && oldState <= HAVE_CURRENT_DATA) {
scheduleEvent(eventNames().canplayEvent);
if (isPotentiallyPlaying)
scheduleEvent(eventNames().playingEvent);
if (isVideo())
static_cast<HTMLVideoElement*>(this)->updatePosterImage();
}
if (m_readyState == HAVE_ENOUGH_DATA && oldState < HAVE_ENOUGH_DATA) {
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()) {
m_paused = false;
scheduleEvent(eventNames().playEvent);
scheduleEvent(eventNames().playingEvent);
}
if (isVideo())
static_cast<HTMLVideoElement*>(this)->updatePosterImage();
}
updatePlayState();
}
void HTMLMediaElement::progressEventTimerFired(Timer<HTMLMediaElement>*)
{
ASSERT(m_player);
if (m_networkState == NETWORK_EMPTY || m_networkState >= NETWORK_LOADED)
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) {
scheduleProgressEvent(eventNames().stalledEvent);
m_sentStalledEvent = true;
}
} else {
scheduleProgressEvent(eventNames().progressEvent);
m_previousProgress = progress;
m_previousProgressTime = time;
m_sentStalledEvent = false;
}
}
void HTMLMediaElement::seek(float time, ExceptionCode& ec)
{
if (m_readyState == HAVE_NOTHING || !m_player) {
ec = INVALID_STATE_ERR;
return;
}
time = min(time, duration());
time = max(time, 0.0f);
RefPtr<TimeRanges> seekableRanges = seekable();
if (!seekableRanges->contain(time)) {
ec = INDEX_SIZE_ERR;
return;
}
float now = currentTime();
if (time == now)
return;
m_currentTimeDuringSeek = time;
m_seeking = true;
scheduleTimeupdateEvent(false);
m_player->seek(time);
m_sentEndEvent = false;
}
HTMLMediaElement::ReadyState HTMLMediaElement::readyState() const
{
return m_readyState;
}
bool HTMLMediaElement::seeking() const
{
return m_seeking;
}
float HTMLMediaElement::currentTime() const
{
if (!m_player)
return 0;
if (m_seeking)
return m_currentTimeDuringSeek;
return m_player->currentTime();
}
void HTMLMediaElement::setCurrentTime(float time, ExceptionCode& ec)
{
seek(time, ec);
}
float HTMLMediaElement::duration() const
{
if (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_player ? m_player->rate() : 0;
}
void HTMLMediaElement::setPlaybackRate(float rate)
{
if (m_playbackRate != rate) {
m_playbackRate = rate;
scheduleEvent(eventNames().ratechangeEvent);
}
if (m_player && potentiallyPlaying() && m_player->rate() != rate)
m_player->setRate(rate);
}
bool HTMLMediaElement::ended() const
{
return endedPlayback();
}
bool HTMLMediaElement::autoplay() const
{
return false;
}
void HTMLMediaElement::setAutoplay(bool b)
{
setBooleanAttribute(autoplayAttr, b);
}
bool HTMLMediaElement::autobuffer() const
{
return hasAttribute(autobufferAttr);
}
void HTMLMediaElement::setAutobuffer(bool b)
{
setBooleanAttribute(autobufferAttr, b);
}
void HTMLMediaElement::play()
{
if (!inDocument())
return;
if (m_restrictions & RequireUserGestureForRateChangeRestriction && !processingUserGesture())
return;
playInternal();
}
void HTMLMediaElement::playInternal()
{
if (!m_player || m_networkState == NETWORK_EMPTY)
scheduleLoad();
if (endedPlayback()) {
ExceptionCode unused;
seek(0, unused);
}
setPlaybackRate(defaultPlaybackRate());
if (m_paused) {
m_paused = false;
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;
m_requestingPlay = true;
updatePlayState();
}
void HTMLMediaElement::pause()
{
if (m_restrictions & RequireUserGestureForRateChangeRestriction && !processingUserGesture())
return;
pauseInternal();
}
void HTMLMediaElement::pauseInternal()
{
if (!m_player || m_networkState == NETWORK_EMPTY) {
return;
scheduleLoad();
}
m_autoplaying = false;
if (!m_paused) {
m_paused = true;
scheduleTimeupdateEvent(false);
scheduleEvent(eventNames().pauseEvent);
}
updatePlayState();
}
bool HTMLMediaElement::loop() const
{
return hasAttribute(loopAttr);
}
void HTMLMediaElement::setLoop(bool b)
{
setBooleanAttribute(loopAttr, b);
}
bool HTMLMediaElement::controls() const
{
return hasAttribute(controlsAttr);
}
void HTMLMediaElement::setControls(bool b)
{
setBooleanAttribute(controlsAttr, b);
}
float HTMLMediaElement::volume() const
{
return m_volume;
}
void HTMLMediaElement::setVolume(float vol, ExceptionCode& ec)
{
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)
{
if (m_muted != muted) {
m_muted = muted;
updateVolume();
scheduleEvent(eventNames().volumechangeEvent);
}
}
void HTMLMediaElement::togglePlayState()
{
if (canPlay())
playInternal();
else
pauseInternal();
}
void HTMLMediaElement::beginScrubbing()
{
if (!paused()) {
if (ended()) {
pause();
} else {
setPausedInternal(true);
}
}
}
void HTMLMediaElement::endScrubbing()
{
if (m_pausedInternal)
setPausedInternal(false);
}
static const double maxTimeupdateEventFrequency = 0.25;
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_playbackRate)
return;
scheduleTimeupdateEvent(true);
}
void HTMLMediaElement::scheduleTimeupdateEvent(bool periodicEvent)
{
double now = WTF::currentTime();
double timedelta = now - m_lastTimeUpdateEventWallTime;
if (periodicEvent && timedelta < maxTimeupdateEventFrequency)
return;
float movieTime = m_player ? m_player->currentTime() : 0;
if (movieTime != m_lastTimeUpdateEventMovieTime) {
scheduleEvent(eventNames().timeupdateEvent);
m_lastTimeUpdateEventWallTime = now;
m_lastTimeUpdateEventMovieTime = movieTime;
}
}
bool HTMLMediaElement::canPlay() const
{
return paused() || ended() || m_readyState < HAVE_METADATA;
}
bool HTMLMediaElement::havePotentialSourceChild()
{
Node* currentSourceNode = m_currentSourceNode;
String nextUrl = nextSourceChild();
m_currentSourceNode = currentSourceNode;
return !nextUrl.isEmpty();
}
String HTMLMediaElement::nextSourceChild(ContentType *contentType)
{
String mediaSrc;
bool lookingForPreviousNode = m_currentSourceNode;
for (Node* node = firstChild(); node; node = node->nextSibling()) {
if (!node->hasTagName(sourceTag))
continue;
if (lookingForPreviousNode) {
if (m_currentSourceNode == node)
lookingForPreviousNode = false;
continue;
}
HTMLSourceElement* source = static_cast<HTMLSourceElement*>(node);
if (!source->hasAttribute(srcAttr))
continue;
if (source->hasAttribute(mediaAttr)) {
MediaQueryEvaluator screenEval("screen", document()->frame(), renderer() ? renderer()->style() : 0);
RefPtr<MediaList> media = MediaList::createAllowingDescriptionSyntax(source->media());
if (!screenEval.eval(media.get()))
continue;
}
if (source->hasAttribute(typeAttr)) {
ContentType type(source->type());
if (!MediaPlayer::supportsType(type))
continue;
if (contentType)
*contentType = type;
}
mediaSrc = source->src().string();
m_currentSourceNode = node;
break;
}
if (!mediaSrc.isEmpty())
mediaSrc = document()->completeURL(mediaSrc).string();
return mediaSrc;
}
void HTMLMediaElement::mediaPlayerTimeChanged(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
if (m_readyState >= HAVE_CURRENT_DATA && m_seeking) {
scheduleEvent(eventNames().seekedEvent);
m_seeking = false;
}
float now = currentTime();
float dur = duration();
if (!isnan(dur) && dur && now >= dur) {
if (loop()) {
ExceptionCode ignoredException;
m_sentEndEvent = false;
seek(0, ignoredException);
} else {
if (!m_sentEndEvent) {
m_sentEndEvent = true;
scheduleTimeupdateEvent(false);
scheduleEvent(eventNames().endedEvent);
}
}
}
else {
scheduleTimeupdateEvent(false);
m_sentEndEvent = false;
}
updatePlayState();
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerRepaint(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
if (renderer())
renderer()->repaint();
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerVolumeChanged(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
updateVolume();
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerDurationChanged(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
scheduleEvent(eventNames().durationchangeEvent);
#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
if (renderer()) {
renderer()->updateFromElement();
if (!renderer()->isImage())
static_cast<RenderVideo*>(renderer())->videoSizeChanged();
}
#endif
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerRateChanged(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
m_playbackRate = m_player->rate();
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerSizeChanged(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
if (renderer() && !renderer()->isImage())
static_cast<RenderVideo*>(renderer())->videoSizeChanged();
#endif
endProcessingMediaPlayerCallback();
}
PassRefPtr<TimeRanges> HTMLMediaElement::buffered() const
{
if (!m_player || !m_player->maxTimeBuffered())
return TimeRanges::create();
return TimeRanges::create(0, m_player->maxTimeBuffered());
}
PassRefPtr<TimeRanges> HTMLMediaElement::played() const
{
return TimeRanges::create();
}
PassRefPtr<TimeRanges> HTMLMediaElement::seekable() const
{
if (!m_player || !m_player->maxTimeSeekable())
return TimeRanges::create();
return TimeRanges::create(0, m_player->maxTimeSeekable());
}
bool HTMLMediaElement::potentiallyPlaying() const
{
return !paused() && m_networkState < NETWORK_NO_SOURCE && !endedPlayback() && !stoppedDueToErrors() && !pausedForUserInteraction();
}
bool HTMLMediaElement::endedPlayback() const
{
if (!m_player || m_readyState < HAVE_METADATA)
return false;
float dur = duration();
return !isnan(dur) && currentTime() >= dur && !loop();
}
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 !m_inFullScreen && !m_requestingPlay;
}
void HTMLMediaElement::updateVolume()
{
if (!m_player)
return;
if (!processingMediaPlayerCallback()) {
Page* page = document()->page();
float volumeMultiplier = page ? page->mediaVolume() : 1;
m_player->setVolume(m_muted ? 0 : m_volume * volumeMultiplier);
}
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::updatePlayState()
{
if (!m_player)
return;
if (m_pausedInternal) {
if (!m_player->paused())
m_player->pause();
m_playbackProgressTimer.stop();
return;
}
bool shouldBePlaying = potentiallyPlaying();
bool playerPaused = m_player->paused();
if (shouldBePlaying && playerPaused) {
m_player->setRate(m_playbackRate);
m_player->play();
startPlaybackProgressTimer();
} else if (!shouldBePlaying && !playerPaused) {
m_player->pause();
m_playbackProgressTimer.stop();
}
m_requestingPlay = false;
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()
{
if (m_networkState != NETWORK_EMPTY) {
#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
m_player.clear();
#endif
stopPeriodicTimers();
m_error = MediaError::create(MediaError::MEDIA_ERR_ABORTED);
scheduleProgressEvent(eventNames().abortEvent);
if (m_networkState >= NETWORK_LOADING) {
m_networkState = NETWORK_EMPTY;
m_readyState = HAVE_NOTHING;
scheduleEvent(eventNames().emptiedEvent);
}
m_delayingTheLoadEvent = false;
}
}
void HTMLMediaElement::documentWillBecomeInactive()
{
m_inActiveDocument = false;
userCancelledLoad();
setPausedInternal(true);
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::documentDidBecomeActive()
{
m_inActiveDocument = true;
setPausedInternal(false);
if (m_error && m_error->code() == MediaError::MEDIA_ERR_ABORTED) {
ExceptionCode ec;
load(ec);
}
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::mediaVolumeDidChange()
{
updateVolume();
}
void HTMLMediaElement::defaultEventHandler(Event* event)
{
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
RenderObject* r = renderer();
if (!r || !r->isWidget())
return;
Widget* widget = static_cast<RenderWidget*>(r)->widget();
if (widget)
widget->handleEvent(event);
#else
if (renderer() && renderer()->isMedia())
static_cast<RenderMedia*>(renderer())->forwardEvent(event);
if (event->defaultHandled())
return;
HTMLElement::defaultEventHandler(event);
#endif
}
bool HTMLMediaElement::processingUserGesture() const
{
Frame* frame = document()->frame();
FrameLoader* loader = frame ? frame->loader() : 0;
return loader ? loader->userGestureHint() : true;
}
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
void HTMLMediaElement::deliverNotification(MediaPlayerProxyNotificationType notification)
{
if (notification == MediaPlayerNotificationPlayPauseButtonPressed) {
togglePlayState();
return;
}
if (notification == MediaPlayerNotificationEnteredFullScreen)
m_inFullScreen = true;
else if (notification == MediaPlayerNotificationExitedFullScreen) {
if (!m_paused)
pauseInternal();
} else if (notification == MediaPlayerNotificationMediaValidated || notification == MediaPlayerNotificationReadyForInspection) {
m_error = 0;
}
if (m_player)
m_player->deliverNotification(notification);
if (notification == MediaPlayerNotificationExitedFullScreen)
m_inFullScreen = false;
}
void HTMLMediaElement::setMediaPlayerProxy(WebMediaPlayerProxy* proxy)
{
if (!m_player)
m_player.set(new MediaPlayer(this));
if (m_player)
m_player->setMediaPlayerProxy(proxy);
}
String HTMLMediaElement::initialURL()
{
String initialSrc = getAttribute(srcAttr);
if (initialSrc.isEmpty())
initialSrc = nextSourceChild();
if (!initialSrc.isEmpty())
initialSrc = document()->completeURL(initialSrc).string();
m_currentSrc = initialSrc;
return initialSrc;
}
void HTMLMediaElement::finishParsingChildren()
{
HTMLElement::finishParsingChildren();
if (!m_player)
m_player.set(new MediaPlayer(this));
document()->updateRendering();
if (m_needWidgetUpdate && renderer())
static_cast<RenderPartObject*>(renderer())->updateWidget(true);
}
#endif
}
#endif