already_AddRefed<DOMMediaStream>
TVTuner::CreateSimulatedMediaStream()
{
nsCOMPtr<nsPIDOMWindowInner> domWin = GetOwner();
if (NS_WARN_IF(!domWin)) {
return nullptr;
}
nsIDocument* doc = domWin->GetExtantDoc();
if (NS_WARN_IF(!doc)) {
return nullptr;
}
ErrorResult error;
ElementCreationOptionsOrString options;
options.SetAsString();
RefPtr<Element> element = doc->CreateElement(VIDEO_TAG, options, error);
if (NS_WARN_IF(error.Failed())) {
error.SuppressException();
return nullptr;
}
nsCOMPtr<nsIContent> content(do_QueryInterface(element));
if (NS_WARN_IF(!content)) {
return nullptr;
}
HTMLMediaElement* mediaElement = static_cast<HTMLMediaElement*>(content.get());
if (NS_WARN_IF(!mediaElement)) {
return nullptr;
}
mediaElement->SetAutoplay(true, error);
if (NS_WARN_IF(error.Failed())) {
error.SuppressException();
return nullptr;
}
mediaElement->SetLoop(true, error);
if (NS_WARN_IF(error.Failed())) {
error.SuppressException();
return nullptr;
}
nsCOMPtr<nsITVSimulatorService> simService(do_QueryInterface(mTVService));
if (NS_WARN_IF(!simService)) {
return nullptr;
}
if (NS_WARN_IF(!mCurrentSource)) {
return nullptr;
}
RefPtr<TVChannel> currentChannel = mCurrentSource->GetCurrentChannel();
if (NS_WARN_IF(!currentChannel)) {
return nullptr;
}
nsString currentChannelNumber;
currentChannel->GetNumber(currentChannelNumber);
if (currentChannelNumber.IsEmpty()) {
return nullptr;
}
nsString currentVideoBlobUrl;
nsresult rv = simService->GetSimulatorVideoBlobURL(mId,
ToTVSourceTypeStr(mCurrentSource->Type()),
currentChannelNumber,
domWin,
currentVideoBlobUrl);
if (NS_WARN_IF(NS_FAILED(rv) || currentVideoBlobUrl.IsEmpty())) {
return nullptr;
}
mediaElement->SetSrc(currentVideoBlobUrl, error);
if (NS_WARN_IF(error.Failed())) {
error.SuppressException();
return nullptr;
}
// See Media Capture from DOM Elements spec.
// http://www.w3.org/TR/mediacapture-fromelement/
RefPtr<DOMMediaStream> stream = mediaElement->MozCaptureStream(error);
if (NS_WARN_IF(error.Failed())) {
error.SuppressException();
return nullptr;
}
return stream.forget();
}
nsresult
NS_NewDOMDocument(nsIDOMDocument** aInstancePtrResult,
const nsAString& aNamespaceURI,
const nsAString& aQualifiedName,
nsIDOMDocumentType* aDoctype,
nsIURI* aDocumentURI,
nsIURI* aBaseURI,
nsIPrincipal* aPrincipal,
bool aLoadedAsData,
nsIGlobalObject* aEventObject,
DocumentFlavor aFlavor,
StyleBackendType aStyleBackend)
{
// Note: can't require that aDocumentURI/aBaseURI/aPrincipal be non-null,
// since at least one caller (XMLHttpRequest) doesn't have decent args to
// pass in.
nsresult rv;
*aInstancePtrResult = nullptr;
nsCOMPtr<nsIDocument> d;
bool isHTML = false;
bool isXHTML = false;
if (aFlavor == DocumentFlavorSVG) {
rv = NS_NewSVGDocument(getter_AddRefs(d));
} else if (aFlavor == DocumentFlavorHTML) {
rv = NS_NewHTMLDocument(getter_AddRefs(d));
isHTML = true;
} else if (aFlavor == DocumentFlavorPlain) {
rv = NS_NewXMLDocument(getter_AddRefs(d), aLoadedAsData, true);
} else if (aDoctype) {
MOZ_ASSERT(aFlavor == DocumentFlavorLegacyGuess);
nsAutoString publicId, name;
aDoctype->GetPublicId(publicId);
if (publicId.IsEmpty()) {
aDoctype->GetName(name);
}
if (name.EqualsLiteral("html") ||
publicId.EqualsLiteral("-//W3C//DTD HTML 4.01//EN") ||
publicId.EqualsLiteral("-//W3C//DTD HTML 4.01 Frameset//EN") ||
publicId.EqualsLiteral("-//W3C//DTD HTML 4.01 Transitional//EN") ||
publicId.EqualsLiteral("-//W3C//DTD HTML 4.0//EN") ||
publicId.EqualsLiteral("-//W3C//DTD HTML 4.0 Frameset//EN") ||
publicId.EqualsLiteral("-//W3C//DTD HTML 4.0 Transitional//EN")) {
rv = NS_NewHTMLDocument(getter_AddRefs(d));
isHTML = true;
} else if (publicId.EqualsLiteral("-//W3C//DTD XHTML 1.0 Strict//EN") ||
publicId.EqualsLiteral("-//W3C//DTD XHTML 1.0 Transitional//EN") ||
publicId.EqualsLiteral("-//W3C//DTD XHTML 1.0 Frameset//EN")) {
rv = NS_NewHTMLDocument(getter_AddRefs(d));
isHTML = true;
isXHTML = true;
}
else if (publicId.EqualsLiteral("-//W3C//DTD SVG 1.1//EN")) {
rv = NS_NewSVGDocument(getter_AddRefs(d));
}
// XXX Add support for XUL documents.
else {
rv = NS_NewXMLDocument(getter_AddRefs(d));
}
} else {
MOZ_ASSERT(aFlavor == DocumentFlavorLegacyGuess);
rv = NS_NewXMLDocument(getter_AddRefs(d));
}
if (NS_FAILED(rv)) {
return rv;
}
// If we were passed an explicit style backend for this document set it
// immediately after creation, before any content is inserted.
if (aStyleBackend != StyleBackendType::None) {
d->SetStyleBackendType(aStyleBackend);
}
if (isHTML) {
nsCOMPtr<nsIHTMLDocument> htmlDoc = do_QueryInterface(d);
NS_ASSERTION(htmlDoc, "HTML Document doesn't implement nsIHTMLDocument?");
htmlDoc->SetCompatibilityMode(eCompatibility_FullStandards);
htmlDoc->SetIsXHTML(isXHTML);
}
nsDocument* doc = static_cast<nsDocument*>(d.get());
doc->SetLoadedAsData(aLoadedAsData);
doc->nsDocument::SetDocumentURI(aDocumentURI);
// Must set the principal first, since SetBaseURI checks it.
doc->SetPrincipal(aPrincipal);
doc->SetBaseURI(aBaseURI);
// We need to set the script handling object after we set the principal such
// that the doc group is assigned correctly.
if (nsCOMPtr<nsIScriptGlobalObject> sgo = do_QueryInterface(aEventObject)) {
d->SetScriptHandlingObject(sgo);
} else if (aEventObject){
d->SetScopeObject(aEventObject);
}
// XMLDocuments and documents "created in memory" get to be UTF-8 by default,
// unlike the legacy HTML mess
doc->SetDocumentCharacterSet(UTF_8_ENCODING);
if (aDoctype) {
nsCOMPtr<nsINode> doctypeAsNode = do_QueryInterface(aDoctype);
ErrorResult result;
d->AppendChild(*doctypeAsNode, result);
if (NS_WARN_IF(result.Failed())) {
return result.StealNSResult();
}
}
if (!aQualifiedName.IsEmpty()) {
ErrorResult result;
ElementCreationOptionsOrString options;
options.SetAsString();
nsCOMPtr<Element> root =
doc->CreateElementNS(aNamespaceURI, aQualifiedName, options, result);
if (NS_WARN_IF(result.Failed())) {
return result.StealNSResult();
}
d->AppendChild(*root, result);
if (NS_WARN_IF(result.Failed())) {
return result.StealNSResult();
}
}
*aInstancePtrResult = doc;
NS_ADDREF(*aInstancePtrResult);
return NS_OK;
}