/*
* Copyright (C) 2007, 2008, 2009, 2010 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 "Chrome.h"
#include "ChromeClient.h"
#include "ClientRect.h"
#include "ClientRectList.h"
#include "CSSHelper.h"
#include "CSSPropertyNames.h"
#include "CSSValueKeywords.h"
#include "ContentType.h"
#include "DocLoader.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 "MIMETypeRegistry.h"
#include "MappedAttribute.h"
#include "MediaDocument.h"
#include "MediaError.h"
#include "MediaList.h"
#include "MediaPlayer.h"
#include "MediaQueryEvaluator.h"
#include "Page.h"
#include "RenderVideo.h"
#include "RenderView.h"
#include "ScriptEventListener.h"
#include "TimeRanges.h"
#include <limits>
#include <wtf/CurrentTime.h>
#include <wtf/MathExtras.h>
#if USE(ACCELERATED_COMPOSITING)
#include "RenderView.h"
#include "RenderLayerCompositor.h"
#endif
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
#include "RenderPartObject.h"
#include "Widget.h"
#endif
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_playedTimeRanges()
, m_playbackRate(1.0f)
, m_defaultPlaybackRate(1.0f)
, m_webkitPreservesPitch(true)
, m_networkState(NETWORK_EMPTY)
, m_readyState(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_player(0)
, m_restrictions(NoRestrictions)
, m_playing(false)
, 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)
, m_isFullscreen(false)
, m_closedCaptionsVisible(false)
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
, m_needWidgetUpdate(false)
#endif
{
document()->registerForDocumentActivationCallbacks(this);
document()->registerForMediaVolumeCallbacks(this);
}
HTMLMediaElement::~HTMLMediaElement()
{
document()->unregisterForDocumentActivationCallbacks(this);
document()->unregisterForMediaVolumeCallbacks(this);
}
void HTMLMediaElement::willMoveToNewOwnerDocument()
{
document()->unregisterForDocumentActivationCallbacks(this);
document()->unregisterForMediaVolumeCallbacks(this);
HTMLElement::willMoveToNewOwnerDocument();
}
void HTMLMediaElement::didMoveToNewOwnerDocument()
{
document()->registerForDocumentActivationCallbacks(this);
document()->registerForMediaVolumeCallbacks(this);
HTMLElement::didMoveToNewOwnerDocument();
}
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) {
// don't have a src or any <source> children, trigger load
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)
{
const QualifiedName& attrName = attr->name();
if (attrName == autobufferAttr) {
if (m_player)
m_player->setAutobuffer(!attr->isNull());
} 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 == onloadAttr)
setAttributeEventListener(eventNames().loadEvent, 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::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) RenderEmbeddedObject(this);
#else
return new (arena) RenderMedia(this);
#endif
}
void HTMLMediaElement::insertedIntoDocument()
{
HTMLElement::insertedIntoDocument();
if (!src().isEmpty() && m_networkState == NETWORK_EMPTY)
scheduleLoad();
}
void HTMLMediaElement::removedFromDocument()
{
if (m_networkState > NETWORK_EMPTY)
pause(processingUserGesture());
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();
}
void HTMLMediaElement::recalcStyle(StyleChange change)
{
HTMLElement::recalcStyle(change);
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::scheduleLoad()
{
if (m_loadTimer.isActive())
return;
prepareForLoad();
m_loadTimer.startOneShot(0);
}
void HTMLMediaElement::scheduleNextSourceChild()
{
// Schedule the timer to try the next <source> element WITHOUT resetting state ala prepareForLoad.
m_loadTimer.startOneShot(0);
}
void HTMLMediaElement::scheduleEvent(const AtomicString& eventName)
{
m_pendingEvents.append(Event::create(eventName, false, true));
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);
// FIXME serialize time offset values properly (format not specified yet)
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--;
// FIXME parse time offset values (format not specified yet)
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;
// 4.8.10.3
switch (support)
{
case MediaPlayer::IsNotSupported:
canPlay = "";
break;
case MediaPlayer::MayBeSupported:
canPlay = "maybe";
break;
case MediaPlayer::IsSupported:
canPlay = "probably";
break;
}
return canPlay;
}
void HTMLMediaElement::load(bool isUserGesture, ExceptionCode& ec)
{
if (m_restrictions & RequireUserGestureForLoadRestriction && !isUserGesture)
ec = INVALID_STATE_ERR;
else {
prepareForLoad();
loadInternal();
}
}
void HTMLMediaElement::prepareForLoad()
{
// Perform the cleanup required for the resource load algorithm to run.
stopPeriodicTimers();
m_loadTimer.stop();
m_sentStalledEvent = false;
m_haveFiredLoadedData = false;
// 2 - Abort any already-running instance of the resource selection algorithm for this element.
m_currentSourceNode = 0;
// 3 - 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();
}
void HTMLMediaElement::loadInternal()
{
// If the load() method for this element is already being invoked, then abort these steps.
if (m_processingLoad)
return;
m_processingLoad = true;
// Steps 1 and 2 were done in prepareForLoad()
// 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);
// 4
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_playing = false;
m_player->seek(0);
}
scheduleEvent(eventNames().emptiedEvent);
}
// 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;
m_playedTimeRanges = TimeRanges::create();
m_lastSeekTime = 0;
m_closedCaptionsVisible = false;
// 7 - Invoke the media element's resource selection algorithm.
selectMediaResource();
m_processingLoad = false;
}
void HTMLMediaElement::selectMediaResource()
{
// 1 - Set the networkState to NETWORK_NO_SOURCE
m_networkState = NETWORK_NO_SOURCE;
// 2 - Asynchronously await a stable state.
// 3 - ... the media element has neither a src attribute ...
String mediaSrc = getAttribute(srcAttr);
if (!mediaSrc) {
// ... nor a source element child: ...
Node* node;
for (node = firstChild(); node; node = node->nextSibling()) {
if (node->hasTagName(sourceTag))
break;
}
if (!node) {
m_loadState = WaitingForSource;
// ... set the networkState to NETWORK_EMPTY, and abort these steps
m_networkState = NETWORK_EMPTY;
ASSERT(!m_delayingTheLoadEvent);
return;
}
}
// 4
m_delayingTheLoadEvent = true;
m_networkState = NETWORK_LOADING;
// 5
scheduleEvent(eventNames().loadstartEvent);
// 6 - If the media element has a src attribute, then run these substeps
ContentType contentType("");
if (!mediaSrc.isNull()) {
KURL mediaURL = document()->completeURL(mediaSrc);
if (isSafeToLoadURL(mediaURL, Complain) && dispatchBeforeLoadEvent(mediaURL.string())) {
m_loadState = LoadingFromSrcAttr;
loadResource(mediaURL, contentType);
} else
noneSupported();
return;
}
// Otherwise, the source elements will be used
m_currentSourceNode = 0;
loadNextSourceChild();
}
void HTMLMediaElement::loadNextSourceChild()
{
ContentType contentType("");
KURL mediaURL = selectNextSourceChild(&contentType, Complain);
if (!mediaURL.isValid()) {
waitForSourceChange();
return;
}
m_loadState = LoadingFromSourceElement;
loadResource(mediaURL, contentType);
}
void HTMLMediaElement::loadResource(const KURL& initialURL, ContentType& contentType)
{
ASSERT(isSafeToLoadURL(initialURL, Complain));
Frame* frame = document()->frame();
if (!frame)
return;
FrameLoader* loader = frame->loader();
if (!loader)
return;
KURL url(initialURL);
if (!loader->willLoadMediaElementURL(url))
return;
// The resource fetch algorithm
m_networkState = NETWORK_LOADING;
m_currentSrc = url;
if (m_sendProgressEvents)
startProgressEventTimer();
#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
m_player = MediaPlayer::create(this);
#else
if (!m_player)
m_player = MediaPlayer::create(this);
#endif
m_player->setAutobuffer(autobuffer());
m_player->setPreservesPitch(m_webkitPreservesPitch);
updateVolume();
m_player->load(m_currentSrc, contentType);
if (isVideo() && m_player->canLoadPoster()) {
KURL posterUrl = static_cast<HTMLVideoElement*>(this)->poster();
if (!posterUrl.isEmpty())
m_player->setPoster(posterUrl);
}
if (renderer())
renderer()->updateFromElement();
}
bool HTMLMediaElement::isSafeToLoadURL(const KURL& url, InvalidSourceAction actionIfInvalid)
{
Frame* frame = document()->frame();
FrameLoader* loader = frame ? frame->loader() : 0;
// don't allow remote to local urls, and check with the frame loader client.
if (!loader || !SecurityOrigin::canLoad(url, String(), document())) {
if (actionIfInvalid == Complain)
FrameLoader::reportLocalLoadFailed(frame, url.string());
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()
{
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.
m_delayingTheLoadEvent = false;
}
void HTMLMediaElement::noneSupported()
{
stopPeriodicTimers();
m_loadState = WaitingForSource;
m_currentSourceNode = 0;
// 5 - Reaching this step indicates that either the URL failed to resolve, or the media
// resource failed to load. 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 - Set the element's networkState attribute to the NETWORK_NO_SOURCE value.
m_networkState = NETWORK_NO_SOURCE;
// 7 - Queue a task to fire a progress event called error at the media element, in
// the context of the fetching process that was used to try to obtain the media
// resource in the resource fetch algorithm.
scheduleEvent(eventNames().errorEvent);
// 8 - Set the element's delaying-the-load-event flag to false. This stops delaying the load event.
m_delayingTheLoadEvent = false;
// 9 -Abort these steps. Until the load() method is invoked, the element won't attempt to load another resource.
if (isVideo())
static_cast<HTMLVideoElement*>(this)->updatePosterImage();
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::mediaEngineError(PassRefPtr<MediaError> err)
{
// 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 progress event called error at the media element, in
// the context of the fetching process started by this instance of this algorithm.
scheduleEvent(eventNames().errorEvent);
// 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.
m_delayingTheLoadEvent = false;
// 6 - Abort the overall resource selection algorithm.
m_currentSourceNode = 0;
}
void HTMLMediaElement::cancelPendingEventsAndCallbacks()
{
m_pendingEvents.clear();
for (Node* node = firstChild(); node; node = node->nextSibling()) {
if (node->hasTagName(sourceTag))
static_cast<HTMLSourceElement*>(node)->cancelPendingErrorEvent();
}
}
void HTMLMediaElement::mediaPlayerNetworkStateChanged(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
setNetworkState(m_player->networkState());
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::setNetworkState(MediaPlayer::NetworkState state)
{
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) {
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) {
m_currentSourceNode->scheduleErrorEvent();
if (havePotentialSourceChild())
scheduleNextSourceChild();
else
waitForSourceChange();
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 && m_loadState == LoadingFromSrcAttr)
noneSupported();
if (isVideo())
static_cast<HTMLVideoElement*>(this)->updatePosterImage();
return;
}
if (state == MediaPlayer::Idle) {
if (m_networkState > NETWORK_IDLE) {
stopPeriodicTimers();
scheduleEvent(eventNames().suspendEvent);
}
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) {
NetworkState oldState = m_networkState;
m_networkState = NETWORK_LOADED;
if (oldState < NETWORK_LOADED || oldState == NETWORK_NO_SOURCE) {
m_progressEventTimer.stop();
// Schedule one last progress event so we guarantee that at least one is fired
// for files that load very quickly.
scheduleEvent(eventNames().progressEvent);
// Check to see if readyState changes need to be dealt with before sending the
// 'load' event so we report 'canplaythrough' first. This is necessary because a
// media engine reports readyState and networkState changes separately
MediaPlayer::ReadyState currentState = m_player->readyState();
if (static_cast<ReadyState>(currentState) != m_readyState)
setReadyState(currentState);
scheduleEvent(eventNames().loadEvent);
}
}
}
void HTMLMediaElement::mediaPlayerReadyStateChanged(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
setReadyState(m_player->readyState());
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::setReadyState(MediaPlayer::ReadyState state)
{
// Set "wasPotentiallyPlaying" BEFORE updating m_readyState, potentiallyPlaying() uses it
bool wasPotentiallyPlaying = potentiallyPlaying();
ReadyState oldState = m_readyState;
m_readyState = static_cast<ReadyState>(state);
if (m_readyState == oldState)
return;
if (m_networkState == NETWORK_EMPTY)
return;
if (m_seeking) {
// 4.8.10.10, step 8
if (wasPotentiallyPlaying && m_readyState < HAVE_FUTURE_DATA)
scheduleEvent(eventNames().waitingEvent);
// 4.8.10.10, step 9
if (m_readyState < HAVE_CURRENT_DATA) {
if (oldState >= HAVE_CURRENT_DATA)
scheduleEvent(eventNames().seekingEvent);
} else {
// 4.8.10.10 step 12 & 13.
finishSeek();
}
} else {
if (wasPotentiallyPlaying && m_readyState < HAVE_FUTURE_DATA) {
// 4.8.10.9
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()->isVideo()) {
toRenderVideo(renderer())->videoSizeChanged();
}
#endif
m_delayingTheLoadEvent = false;
m_player->seek(0);
}
bool shouldUpdatePosterImage = false;
// 4.8.10.7 says loadeddata is sent only when the new state *is* HAVE_CURRENT_DATA: "If the
// previous ready state was HAVE_METADATA and the new ready state is HAVE_CURRENT_DATA",
// but the event table at the end of the spec says it is sent when: "readyState newly
// increased to HAVE_CURRENT_DATA or greater for the first time"
// We go with the later because it seems useful to count on getting this event
if (m_readyState >= HAVE_CURRENT_DATA && oldState < HAVE_CURRENT_DATA && !m_haveFiredLoadedData) {
m_haveFiredLoadedData = true;
shouldUpdatePosterImage = 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);
shouldUpdatePosterImage = true;
}
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);
}
shouldUpdatePosterImage = true;
}
if (shouldUpdatePosterImage && 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) {
scheduleEvent(eventNames().stalledEvent);
m_sentStalledEvent = true;
}
} else {
scheduleEvent(eventNames().progressEvent);
m_previousProgress = progress;
m_previousProgressTime = time;
m_sentStalledEvent = false;
if (renderer())
renderer()->updateFromElement();
}
}
void HTMLMediaElement::rewind(float timeDelta)
{
ExceptionCode e;
setCurrentTime(max(currentTime() - timeDelta, minTimeSeekable()), e);
}
void HTMLMediaElement::returnToRealtime()
{
ExceptionCode e;
setCurrentTime(maxTimeSeekable(), e);
}
void HTMLMediaElement::addPlayedRange(float start, float end)
{
if (!m_playedTimeRanges)
m_playedTimeRanges = TimeRanges::create();
m_playedTimeRanges->add(start, end);
}
bool HTMLMediaElement::supportsSave() const
{
return m_player ? m_player->supportsSave() : false;
}
void HTMLMediaElement::seek(float time, ExceptionCode& ec)
{
// 4.8.10.10. Seeking
// 1
if (m_readyState == HAVE_NOTHING || !m_player) {
ec = INVALID_STATE_ERR;
return;
}
// 2
time = min(time, duration());
// 3
time = max(time, 0.0f);
// 4
RefPtr<TimeRanges> seekableRanges = seekable();
if (!seekableRanges->contain(time)) {
ec = INDEX_SIZE_ERR;
return;
}
// avoid generating events when the time won't actually change
float now = currentTime();
if (time == now)
return;
// 5
if (m_playing) {
if (m_lastSeekTime < now)
addPlayedRange(m_lastSeekTime, now);
}
m_lastSeekTime = time;
// 6 - set the seeking flag, it will be cleared when the engine tells is the time has actually changed
m_seeking = true;
// 7
scheduleTimeupdateEvent(false);
// 8 - this is covered, if necessary, when the engine signals a readystate change
// 10
m_player->seek(time);
m_sentEndEvent = false;
}
void HTMLMediaElement::finishSeek()
{
// 4.8.10.10 Seeking step 12
m_seeking = false;
// 4.8.10.10 Seeking step 13
scheduleEvent(eventNames().seekedEvent);
}
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;
}
// playback state
float HTMLMediaElement::currentTime() const
{
if (!m_player)
return 0;
if (m_seeking)
return m_lastSeekTime;
return m_player->currentTime();
}
void HTMLMediaElement::setCurrentTime(float time, ExceptionCode& ec)
{
seek(time, ec);
}
float HTMLMediaElement::startTime() const
{
if (!m_player)
return 0;
return m_player->startTime();
}
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::webkitPreservesPitch() const
{
return m_webkitPreservesPitch;
}
void HTMLMediaElement::setWebkitPreservesPitch(bool 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 hasAttribute(autoplayAttr);
}
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(bool isUserGesture)
{
if (m_restrictions & RequireUserGestureForRateChangeRestriction && !isUserGesture)
return;
playInternal();
}
void HTMLMediaElement::playInternal()
{
// 4.8.10.9. Playing the media resource
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;
updatePlayState();
}
void HTMLMediaElement::pause(bool isUserGesture)
{
if (m_restrictions & RequireUserGestureForRateChangeRestriction && !isUserGesture)
return;
pauseInternal();
}
void HTMLMediaElement::pauseInternal()
{
// 4.8.10.9. Playing the media resource
if (!m_player || m_networkState == NETWORK_EMPTY)
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
{
Frame* frame = document()->frame();
// always show controls when scripting is disabled
if (frame && !frame->script()->canExecuteScripts())
return true;
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;
// Avoid recursion when the player reports volume changes.
if (!processingMediaPlayerCallback()) {
if (m_player && m_player->supportsMuting()) {
m_player->setMuted(m_muted);
if (renderer())
renderer()->updateFromElement();
} else
updateVolume();
}
scheduleEvent(eventNames().volumechangeEvent);
}
}
void HTMLMediaElement::togglePlayState()
{
// 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())
playInternal();
else
pauseInternal();
}
void HTMLMediaElement::beginScrubbing()
{
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(processingUserGesture());
} 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()
{
if (m_pausedInternal)
setPausedInternal(false);
}
// The spec says to fire periodic timeupdate events (those sent while playing) every
// "15 to 250ms", we choose the slowest frequency
static const double maxTimeupdateEventFrequency = 0.25;
void HTMLMediaElement::startPlaybackProgressTimer()
{
if (m_playbackProgressTimer.isActive())
return;
m_previousProgressTime = WTF::currentTime();
m_previousProgress = 0;
m_playbackProgressTimer.startRepeating(maxTimeupdateEventFrequency);
}
void HTMLMediaElement::playbackProgressTimerFired(Timer<HTMLMediaElement>*)
{
ASSERT(m_player);
if (!m_playbackRate)
return;
scheduleTimeupdateEvent(true);
// FIXME: deal with cue ranges here
}
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 = 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;
}
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;
}
bool HTMLMediaElement::havePotentialSourceChild()
{
// Stash the current <source> node so we can restore it after checking
// to see there is another potential
HTMLSourceElement* currentSourceNode = m_currentSourceNode;
KURL nextURL = selectNextSourceChild(0, DoNothing);
m_currentSourceNode = currentSourceNode;
return nextURL.isValid();
}
KURL HTMLMediaElement::selectNextSourceChild(ContentType *contentType, InvalidSourceAction actionIfInvalid)
{
KURL mediaURL;
Node* node;
bool lookingForPreviousNode = m_currentSourceNode;
bool canUse = false;
for (node = firstChild(); !canUse && node; node = node->nextSibling()) {
if (!node->hasTagName(sourceTag))
continue;
if (lookingForPreviousNode) {
if (m_currentSourceNode == static_cast<HTMLSourceElement*>(node))
lookingForPreviousNode = false;
continue;
}
HTMLSourceElement* source = static_cast<HTMLSourceElement*>(node);
if (!source->hasAttribute(srcAttr))
goto check_again;
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()))
goto check_again;
}
if (source->hasAttribute(typeAttr)) {
if (!MediaPlayer::supportsType(ContentType(source->type())))
goto check_again;
}
// Is it safe to load this url?
mediaURL = source->src();
if (!mediaURL.isValid() || !isSafeToLoadURL(mediaURL, actionIfInvalid) || !dispatchBeforeLoadEvent(mediaURL.string()))
goto check_again;
// Making it this far means the <source> looks reasonable
canUse = true;
if (contentType)
*contentType = ContentType(source->type());
check_again:
if (!canUse && actionIfInvalid == Complain)
source->scheduleErrorEvent();
m_currentSourceNode = static_cast<HTMLSourceElement*>(node);
}
if (!canUse)
m_currentSourceNode = 0;
return canUse ? mediaURL : KURL();
}
void HTMLMediaElement::mediaPlayerTimeChanged(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
// 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);
// 4.8.10.10 step 12 & 13. Needed if no ReadyState change is associated with the seek.
if (m_readyState >= HAVE_CURRENT_DATA && m_seeking)
finishSeek();
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;
scheduleEvent(eventNames().endedEvent);
}
}
}
else
m_sentEndEvent = false;
updatePlayState();
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerVolumeChanged(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
if (m_player)
m_volume = m_player->volume();
updateVolume();
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerMuteChanged(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
if (m_player)
setMuted(m_player->muted());
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerDurationChanged(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
scheduleEvent(eventNames().durationchangeEvent);
#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
if (renderer()) {
renderer()->updateFromElement();
if (renderer()->isVideo())
toRenderVideo(renderer())->videoSizeChanged();
}
#endif
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerRateChanged(MediaPlayer*)
{
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();
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerSawUnsupportedTracks(MediaPlayer*)
{
// 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();
}
}
// MediaPlayerPresentation methods
void HTMLMediaElement::mediaPlayerRepaint(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
if (renderer())
renderer()->repaint();
endProcessingMediaPlayerCallback();
}
void HTMLMediaElement::mediaPlayerSizeChanged(MediaPlayer*)
{
beginProcessingMediaPlayerCallback();
#if !ENABLE(PLUGIN_PROXY_FOR_VIDEO)
if (renderer() && renderer()->isVideo())
toRenderVideo(renderer())->videoSizeChanged();
#endif
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;
}
GraphicsLayer* HTMLMediaElement::mediaPlayerGraphicsLayer(MediaPlayer*)
{
if (renderer() && renderer()->isVideo())
return toRenderVideo(renderer())->videoGraphicsLayer();
return 0;
}
#endif
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
{
// FIXME real ranges support
if (!maxTimeSeekable())
return TimeRanges::create();
return TimeRanges::create(minTimeSeekable(), maxTimeSeekable());
}
bool HTMLMediaElement::potentiallyPlaying() const
{
return m_readyState >= HAVE_FUTURE_DATA && couldPlayIfEnoughData();
}
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 and the media element does not have a loop attribute specified,
float now = currentTime();
if (m_playbackRate > 0)
return now >= dur && !loop();
// 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;
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) {
// Set rate before calling play in case the rate was set before the media engine wasn't setup.
// The media engine should just stash the rate since it isn't already playing.
m_player->setRate(m_playbackRate);
m_player->play();
startPlaybackProgressTimer();
m_playing = true;
} else if (!shouldBePlaying && !playerPaused) {
m_player->pause();
m_playbackProgressTimer.stop();
m_playing = false;
float time = currentTime();
if (time > m_lastSeekTime)
addPlayedRange(m_lastSeekTime, time);
} else if (couldPlayIfEnoughData() && playerPaused)
m_player->prepareToPlay();
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 || m_networkState >= NETWORK_LOADED)
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();
// 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 progress event called abort at the media element, in the context
// of the fetching process started by this instance of this algorithm.
scheduleEvent(eventNames().abortEvent);
// 5 - 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 called emptied at the element. Otherwise, set 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;
// 6 - Set the element's delaying-the-load-event flag to false. This stops delaying the load event.
m_delayingTheLoadEvent = false;
// 7 - Abort the overall resource selection algorithm.
m_currentSourceNode = 0;
}
void HTMLMediaElement::documentWillBecomeInactive()
{
if (m_isFullscreen)
exitFullscreen();
m_inActiveDocument = false;
userCancelledLoad();
// Stop the playback without generating events
setPausedInternal(true);
if (renderer())
renderer()->updateFromElement();
stopPeriodicTimers();
cancelPendingEventsAndCallbacks();
}
void HTMLMediaElement::documentDidBecomeActive()
{
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(processingUserGesture(), ec);
}
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::mediaVolumeDidChange()
{
updateVolume();
}
const IntRect HTMLMediaElement::screenRect()
{
IntRect elementRect;
if (renderer())
elementRect = renderer()->view()->frameView()->contentsToScreen(renderer()->absoluteBoundingBoxRect());
return elementRect;
}
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
if (renderer() && renderer()->isMedia())
toRenderMedia(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 'true' for safety if we don't know the answer
return loader ? loader->isProcessingUserGesture() : true;
}
#if ENABLE(PLUGIN_PROXY_FOR_VIDEO)
void HTMLMediaElement::deliverNotification(MediaPlayerProxyNotificationType notification)
{
if (notification == MediaPlayerNotificationPlayPauseButtonPressed) {
togglePlayState();
return;
}
if (m_player)
m_player->deliverNotification(notification);
}
void HTMLMediaElement::setMediaPlayerProxy(WebMediaPlayerProxy* proxy)
{
if (m_player)
m_player->setMediaPlayerProxy(proxy);
}
String HTMLMediaElement::initialURL()
{
KURL initialSrc = document()->completeURL(getAttribute(srcAttr));
if (!initialSrc.isValid())
initialSrc = selectNextSourceChild(0, DoNothing);
m_currentSrc = initialSrc.string();
return initialSrc;
}
void HTMLMediaElement::finishParsingChildren()
{
HTMLElement::finishParsingChildren();
if (!m_player)
m_player = MediaPlayer::create(this);
document()->updateStyleIfNeeded();
if (m_needWidgetUpdate && renderer())
toRenderEmbeddedObject(renderer())->updateWidget(true);
}
#endif
void HTMLMediaElement::enterFullscreen()
{
ASSERT(!m_isFullscreen);
if (document() && document()->page()) {
document()->page()->chrome()->client()->enterFullscreenForNode(this);
scheduleEvent(eventNames().webkitbeginfullscreenEvent);
m_isFullscreen = true;
}
}
void HTMLMediaElement::exitFullscreen()
{
ASSERT(m_isFullscreen);
if (document() && document()->page()) {
document()->page()->chrome()->client()->exitFullscreenForNode(this);
scheduleEvent(eventNames().webkitendfullscreenEvent);
}
m_isFullscreen = false;
}
PlatformMedia HTMLMediaElement::platformMedia() const
{
return m_player ? m_player->platformMedia() : NoPlatformMedia;
}
bool HTMLMediaElement::hasClosedCaptions() const
{
return m_player && m_player->hasClosedCaptions();
}
bool HTMLMediaElement::closedCaptionsVisible() const
{
return m_closedCaptionsVisible;
}
void HTMLMediaElement::setClosedCaptionsVisible(bool closedCaptionVisible)
{
if (!m_player ||!hasClosedCaptions())
return;
m_closedCaptionsVisible = closedCaptionVisible;
m_player->setClosedCaptionsVisible(closedCaptionVisible);
if (renderer())
renderer()->updateFromElement();
}
void HTMLMediaElement::setWebkitClosedCaptionsVisible(bool visible)
{
setClosedCaptionsVisible(visible);
}
bool HTMLMediaElement::webkitClosedCaptionsVisible() const
{
return closedCaptionsVisible();
}
bool HTMLMediaElement::webkitHasClosedCaptions() const
{
return hasClosedCaptions();
}
}
#endif