bool MediaElementSession::playbackPermitted(const HTMLMediaElement& element) const
{
if (pageExplicitlyAllowsElementToAutoplayInline(element))
return true;
if (requiresFullscreenForVideoPlayback(element) && !fullscreenPermitted(element)) {
LOG(Media, "MediaElementSession::playbackPermitted - returning FALSE because of fullscreen restriction");
return false;
}
if (m_restrictions & OverrideUserGestureRequirementForMainContent && updateIsMainContent())
return true;
if (m_restrictions & RequireUserGestureForVideoRateChange && element.isVideo() && !ScriptController::processingUserGestureForMedia()) {
LOG(Media, "MediaElementSession::playbackPermitted - returning FALSE because of video rate change restriction");
return false;
}
if (m_restrictions & RequireUserGestureForAudioRateChange && (!element.isVideo() || element.hasAudio()) && !element.muted() && !ScriptController::processingUserGestureForMedia()) {
LOG(Media, "MediaElementSession::playbackPermitted - returning FALSE because of audio rate change restriction");
return false;
}
return true;
}
bool MediaElementSession::canControlControlsManager(const HTMLMediaElement& element) const
{
if (!element.hasAudio()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: No audio");
return false;
}
if (element.muted()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: Muted");
return false;
}
if (element.ended()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: Ended");
return false;
}
if (element.document().activeDOMObjectsAreSuspended()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: activeDOMObjectsAreSuspended()");
return false;
}
if (!playbackPermitted(element)) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: Playback not permitted");
return false;
}
if (element.isVideo()) {
if (!element.renderer()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: No renderer");
return false;
}
if (!element.hasVideo()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: No video");
return false;
}
if (isElementLargeEnoughForMainContent(element)) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning TRUE: Is main content");
return true;
}
}
if (m_restrictions & RequireUserGestureToControlControlsManager && !ScriptController::processingUserGestureForMedia()) {
LOG(Media, "MediaElementSession::canControlControlsManager - returning FALSE: No user gesture");
return false;
}
LOG(Media, "MediaElementSession::canControlControlsManager - returning TRUE: All criteria met");
return true;
}
PassRefPtr<Widget> SubframeLoader::loadMediaPlayerProxyPlugin(Node* node, const URL& url,
const Vector<String>& paramNames, const Vector<String>& paramValues)
{
ASSERT(node->hasTagName(videoTag) || isHTMLAudioElement(node));
URL completedURL;
if (!url.isEmpty())
completedURL = completeURL(url);
if (!m_frame.document()->securityOrigin()->canDisplay(completedURL)) {
FrameLoader::reportLocalLoadFailed(m_frame, completedURL.string());
return 0;
}
if (!m_frame.document()->contentSecurityPolicy()->allowMediaFromSource(completedURL))
return 0;
HTMLMediaElement* mediaElement = toHTMLMediaElement(node);
RenderWidget* renderer = toRenderWidget(node->renderer());
IntSize size;
if (renderer)
size = roundedIntSize(LayoutSize(renderer->contentWidth(), renderer->contentHeight()));
else if (mediaElement->isVideo())
size = RenderVideo::defaultSize();
if (!m_frame.loader().mixedContentChecker().canRunInsecureContent(m_frame.document()->securityOrigin(), completedURL))
return 0;
RefPtr<Widget> widget = m_frame.loader().client().createMediaPlayerProxyPlugin(size, mediaElement, completedURL,
paramNames, paramValues, "application/x-media-element-proxy-plugin");
if (widget && renderer) {
renderer->setWidget(widget);
renderer->node()->setNeedsStyleRecalc(SyntheticStyleChange);
}
m_containsPlugins = true;
return widget ? widget.release() : 0;
}
void MediaPlayerPrivate::resizeSourceDimensions()
{
if (!m_webCorePlayer)
return;
HTMLMediaElement* client = static_cast<HTMLMediaElement*>(m_webCorePlayer->mediaPlayerClient());
if (!client || !client->isVideo())
return;
RenderObject* o = client->renderer();
if (!o)
return;
// If we have an HTMLVideoElement but the source has no video, then we need to resize the media element.
if (!hasVideo()) {
IntRect rect = o->enclosingBox()->contentBoxRect();
static const int playbookMinAudioElementWidth = 300;
static const int playbookMinAudioElementHeight = 32;
// If the rect dimensions are less than the allowed minimum, use the minimum instead.
int newWidth = max(rect.width(), playbookMinAudioElementWidth);
int newHeight = max(rect.height(), playbookMinAudioElementHeight);
char attrString[12];
sprintf(attrString, "%d", newWidth);
client->setAttribute(HTMLNames::widthAttr, attrString);
sprintf(attrString, "%d", newHeight);
client->setAttribute(HTMLNames::heightAttr, attrString);
}
// If we don't know what the width and height of the video source is, then we need to set it to something sane.
if (m_platformPlayer->sourceWidth() && m_platformPlayer->sourceHeight())
return;
IntRect rect = o->enclosingBox()->contentBoxRect();
m_platformPlayer->setSourceDimension(rect.width(), rect.height());
}
PassRefPtr<Widget> SubframeLoader::loadMediaPlayerProxyPlugin(Node* node, const KURL& url,
const Vector<String>& paramNames, const Vector<String>& paramValues)
{
ASSERT(node->hasTagName(videoTag) || node->hasTagName(audioTag));
if (!m_frame->script()->xssAuditor()->canLoadObject(url.string()))
return 0;
KURL completedURL;
if (!url.isEmpty())
completedURL = completeURL(url);
if (!m_frame->document()->securityOrigin()->canDisplay(completedURL)) {
FrameLoader::reportLocalLoadFailed(m_frame, completedURL.string());
return 0;
}
HTMLMediaElement* mediaElement = static_cast<HTMLMediaElement*>(node);
RenderPart* renderer = toRenderPart(node->renderer());
IntSize size;
if (renderer)
size = IntSize(renderer->contentWidth(), renderer->contentHeight());
else if (mediaElement->isVideo())
size = RenderVideo::defaultSize();
m_frame->loader()->checkIfRunInsecureContent(m_frame->document()->securityOrigin(), completedURL);
RefPtr<Widget> widget = m_frame->loader()->client()->createMediaPlayerProxyPlugin(size, mediaElement, completedURL,
paramNames, paramValues, "application/x-media-element-proxy-plugin");
if (widget && renderer) {
renderer->setWidget(widget);
renderer->node()->setNeedsStyleRecalc(SyntheticStyleChange);
}
m_containsPlugins = true;
return widget ? widget.release() : 0;
}
void MediaControlTextTrackContainerElement::updateDisplay()
{
HTMLMediaElement* mediaElement = toParentMediaElement(this);
// 1. If the media element is an audio element, or is another playback
// mechanism with no rendering area, abort these steps. There is nothing to
// render.
if (!mediaElement->isVideo())
return;
// 2. Let video be the media element or other playback mechanism.
HTMLVideoElement* video = static_cast<HTMLVideoElement*>(mediaElement);
// 3. Let output be an empty list of absolutely positioned CSS block boxes.
Vector<RefPtr<HTMLDivElement> > output;
// 4. If the user agent is exposing a user interface for video, add to
// output one or more completely transparent positioned CSS block boxes that
// cover the same region as the user interface.
// 5. If the last time these rules were run, the user agent was not exposing
// a user interface for video, but now it is, let reset be true. Otherwise,
// let reset be false.
// There is nothing to be done explicitly for 4th and 5th steps, as
// everything is handled through CSS. The caption box is on top of the
// controls box, in a container set with the -webkit-box display property.
// 6. Let tracks be the subset of video's list of text tracks that have as
// their rules for updating the text track rendering these rules for
// updating the display of WebVTT text tracks, and whose text track mode is
// showing or showing by default.
// 7. Let cues be an empty list of text track cues.
// 8. For each track track in tracks, append to cues all the cues from
// track's list of cues that have their text track cue active flag set.
CueList activeCues = video->currentlyActiveCues();
// 9. If reset is false, then, for each text track cue cue in cues: if cue's
// text track cue display state has a set of CSS boxes, then add those boxes
// to output, and remove cue from cues.
// There is nothing explicitly to be done here, as all the caching occurs
// within the TextTrackCue instance itself. If parameters of the cue change,
// the display tree is cleared.
// 10. For each text track cue cue in cues that has not yet had
// corresponding CSS boxes added to output, in text track cue order, run the
// following substeps:
for (size_t i = 0; i < activeCues.size(); ++i) {
TextTrackCue* cue = activeCues[i].data();
ASSERT(cue->isActive());
if (!cue->track() || !cue->track()->isRendered())
continue;
RefPtr<TextTrackCueBox> displayBox = cue->getDisplayTree();
if (displayBox->hasChildNodes() && !contains(static_cast<Node*>(displayBox.get())))
// Note: the display tree of a cue is removed when the active flag of the cue is unset.
appendChild(displayBox, ASSERT_NO_EXCEPTION, false);
}
// 11. Return output.
hasChildNodes() ? show() : hide();
}
void MediaControlTextTrackContainerElement::updateDisplay()
{
if (!mediaController()->closedCaptionsVisible())
removeChildren();
HTMLMediaElement* mediaElement = parentMediaElement(this);
// 1. If the media element is an audio element, or is another playback
// mechanism with no rendering area, abort these steps. There is nothing to
// render.
if (!mediaElement || !mediaElement->isVideo())
return;
// 2. Let video be the media element or other playback mechanism.
HTMLVideoElement* video = toHTMLVideoElement(mediaElement);
// 3. Let output be an empty list of absolutely positioned CSS block boxes.
Vector<RefPtr<HTMLDivElement>> output;
// 4. If the user agent is exposing a user interface for video, add to
// output one or more completely transparent positioned CSS block boxes that
// cover the same region as the user interface.
// 5. If the last time these rules were run, the user agent was not exposing
// a user interface for video, but now it is, let reset be true. Otherwise,
// let reset be false.
// There is nothing to be done explicitly for 4th and 5th steps, as
// everything is handled through CSS. The caption box is on top of the
// controls box, in a container set with the -webkit-box display property.
// 6. Let tracks be the subset of video's list of text tracks that have as
// their rules for updating the text track rendering these rules for
// updating the display of WebVTT text tracks, and whose text track mode is
// showing or showing by default.
// 7. Let cues be an empty list of text track cues.
// 8. For each track track in tracks, append to cues all the cues from
// track's list of cues that have their text track cue active flag set.
CueList activeCues = video->currentlyActiveCues();
// 9. If reset is false, then, for each text track cue cue in cues: if cue's
// text track cue display state has a set of CSS boxes, then add those boxes
// to output, and remove cue from cues.
// There is nothing explicitly to be done here, as all the caching occurs
// within the TextTrackCue instance itself. If parameters of the cue change,
// the display tree is cleared.
// 10. For each text track cue cue in cues that has not yet had
// corresponding CSS boxes added to output, in text track cue order, run the
// following substeps:
for (size_t i = 0; i < activeCues.size(); ++i) {
TextTrackCue* cue = activeCues[i].data();
ASSERT(cue->isActive());
if (!cue->track() || !cue->track()->isRendered() || !cue->isActive() || cue->text().isEmpty())
continue;
RefPtr<TextTrackCueBox> displayBox = cue->getDisplayTree(m_videoDisplaySize.size());
if (displayBox->hasChildNodes() && !contains(displayBox.get())) {
// Note: the display tree of a cue is removed when the active flag of the cue is unset.
appendChild(displayBox, ASSERT_NO_EXCEPTION, AttachNow);
cue->setFontSize(m_fontSize, m_videoDisplaySize.size(), m_fontSizeIsImportant);
}
}
// 11. Return output.
if (hasChildNodes()) {
show();
if (mediaElement->requiresTextTrackRepresentation()) {
if (!m_textTrackRepresentation)
m_textTrackRepresentation = TextTrackRepresentation::create(this);
mediaElement->setTextTrackRepresentation(m_textTrackRepresentation.get());
if (Page* page = document().page())
m_textTrackRepresentation->setContentScale(page->deviceScaleFactor());
m_textTrackRepresentation->update();
setInlineStyleProperty(CSSPropertyWidth, m_videoDisplaySize.size().width(), CSSPrimitiveValue::CSS_PX);
setInlineStyleProperty(CSSPropertyHeight, m_videoDisplaySize.size().height(), CSSPrimitiveValue::CSS_PX);
}
} else {
hide();
clearTextTrackRepresentation();
}
}
