2020-03-19 16:34:15 +01:00
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// Copyright (c) 2020 The Chromium Embedded Framework Authors. All rights
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// reserved. Use of this source code is governed by a BSD-style license that
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// can be found in the LICENSE file.
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#include "libcef/browser/media_router/media_router_impl.h"
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#include "libcef/browser/media_router/media_route_impl.h"
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#include "libcef/browser/media_router/media_router_manager.h"
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#include "libcef/browser/media_router/media_sink_impl.h"
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#include "libcef/browser/media_router/media_source_impl.h"
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#include "libcef/browser/thread_util.h"
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namespace {
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// Do not keep a reference to the object returned by this method.
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CefBrowserContext* GetBrowserContext(const CefBrowserContext::Getter& getter) {
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CEF_REQUIRE_UIT();
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DCHECK(!getter.is_null());
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// Will return nullptr if the BrowserContext has been destroyed.
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return getter.Run();
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}
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} // namespace
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class CefRegistrationImpl : public CefRegistration,
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public CefMediaRouterManager::Observer {
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public:
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explicit CefRegistrationImpl(CefRefPtr<CefMediaObserver> observer)
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: observer_(observer) {
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DCHECK(observer_);
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}
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~CefRegistrationImpl() override {
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CEF_REQUIRE_UIT();
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// May be null if OnMediaRouterDestroyed was called.
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if (browser_context_getter_.is_null())
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return;
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auto browser_context = GetBrowserContext(browser_context_getter_);
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if (!browser_context)
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return;
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browser_context->GetMediaRouterManager()->RemoveObserver(this);
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}
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void Initialize(const CefBrowserContext::Getter& browser_context_getter) {
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CEF_REQUIRE_UIT();
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DCHECK(!browser_context_getter.is_null());
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DCHECK(browser_context_getter_.is_null());
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browser_context_getter_ = browser_context_getter;
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auto browser_context = GetBrowserContext(browser_context_getter_);
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if (!browser_context)
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return;
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browser_context->GetMediaRouterManager()->AddObserver(this);
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}
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private:
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// CefMediaRouterManager::Observer methods:
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void OnMediaRouterDestroyed() override { browser_context_getter_.Reset(); }
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void OnMediaSinks(
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const CefMediaRouterManager::MediaSinkVector& sinks) override {
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std::vector<CefRefPtr<CefMediaSink>> cef_sinks;
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for (const auto& sink : sinks) {
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cef_sinks.push_back(new CefMediaSinkImpl(sink.sink));
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}
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observer_->OnSinks(cef_sinks);
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}
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void OnMediaRoutes(
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const CefMediaRouterManager::MediaRouteVector& routes) override {
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std::vector<CefRefPtr<CefMediaRoute>> cef_routes;
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for (const auto& route : routes) {
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cef_routes.push_back(MakeCefRoute(route));
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}
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observer_->OnRoutes(cef_routes);
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}
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void OnMediaRouteMessages(
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const media_router::MediaRoute& route,
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const CefMediaRouterManager::MediaMessageVector& messages) override {
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CefRefPtr<CefMediaRoute> cef_route = MakeCefRoute(route);
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for (const auto& message : messages) {
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if (message->type == media_router::mojom::RouteMessage::Type::TEXT) {
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if (message->message.has_value()) {
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const std::string& str = *(message->message);
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observer_->OnRouteMessageReceived(cef_route, str.c_str(), str.size());
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}
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} else if (message->type ==
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media_router::mojom::RouteMessage::Type::BINARY) {
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if (message->data.has_value()) {
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const std::vector<uint8_t>& data = *(message->data);
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observer_->OnRouteMessageReceived(cef_route, data.data(),
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data.size());
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}
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}
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}
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}
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void OnMediaRouteStateChange(
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const media_router::MediaRoute& route,
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const content::PresentationConnectionStateChangeInfo& info) override {
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observer_->OnRouteStateChanged(MakeCefRoute(route),
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ToConnectionState(info.state));
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}
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CefRefPtr<CefMediaRoute> MakeCefRoute(const media_router::MediaRoute& route) {
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return new CefMediaRouteImpl(route, browser_context_getter_);
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}
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static CefMediaObserver::ConnectionState ToConnectionState(
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blink::mojom::PresentationConnectionState state) {
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switch (state) {
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case blink::mojom::PresentationConnectionState::CONNECTING:
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return CEF_MRCS_CONNECTING;
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case blink::mojom::PresentationConnectionState::CONNECTED:
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return CEF_MRCS_CONNECTED;
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case blink::mojom::PresentationConnectionState::CLOSED:
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return CEF_MRCS_CLOSED;
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case blink::mojom::PresentationConnectionState::TERMINATED:
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return CEF_MRCS_TERMINATED;
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}
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NOTREACHED();
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return CEF_MRCS_UNKNOWN;
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}
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CefRefPtr<CefMediaObserver> observer_;
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CefBrowserContext::Getter browser_context_getter_;
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IMPLEMENT_REFCOUNTING_DELETE_ON_UIT(CefRegistrationImpl);
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DISALLOW_COPY_AND_ASSIGN(CefRegistrationImpl);
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};
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CefMediaRouterImpl::CefMediaRouterImpl() {
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// Verify that our enum matches Chromium's values.
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static_assert(
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static_cast<int>(CEF_MRCR_TOTAL_COUNT) ==
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static_cast<int>(media_router::RouteRequestResult::TOTAL_COUNT),
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"enum mismatch");
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}
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void CefMediaRouterImpl::Initialize(
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const CefBrowserContext::Getter& browser_context_getter,
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CefRefPtr<CefCompletionCallback> callback) {
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2020-03-19 16:34:15 +01:00
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CEF_REQUIRE_UIT();
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2021-04-15 01:28:22 +02:00
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DCHECK(!initialized_);
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2020-03-19 16:34:15 +01:00
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DCHECK(!browser_context_getter.is_null());
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DCHECK(browser_context_getter_.is_null());
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browser_context_getter_ = browser_context_getter;
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initialized_ = true;
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if (!init_callbacks_.empty()) {
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for (auto& callback : init_callbacks_) {
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std::move(callback).Run();
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}
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init_callbacks_.clear();
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}
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if (callback) {
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// Execute client callback asynchronously for consistency.
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CEF_POST_TASK(CEF_UIT, base::Bind(&CefCompletionCallback::OnComplete,
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callback.get()));
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}
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2020-03-19 16:34:15 +01:00
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}
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CefRefPtr<CefRegistration> CefMediaRouterImpl::AddObserver(
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CefRefPtr<CefMediaObserver> observer) {
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if (!observer)
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return nullptr;
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CefRefPtr<CefRegistrationImpl> registration =
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new CefRegistrationImpl(observer);
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StoreOrTriggerInitCallback(base::BindOnce(
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&CefMediaRouterImpl::InitializeRegistrationInternal, this, registration));
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return registration.get();
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}
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CefRefPtr<CefMediaSource> CefMediaRouterImpl::GetSource(const CefString& urn) {
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if (urn.empty())
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return nullptr;
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// Check for a valid URL and supported Cast/DIAL schemes.
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GURL presentation_url(urn.ToString());
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if (!media_router::IsValidPresentationUrl(presentation_url)) {
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return nullptr;
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}
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if (presentation_url.SchemeIsHTTPOrHTTPS()) {
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// We don't support tab/desktop mirroring, which is what Cast uses for
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// arbitrary HTTP/HTTPS URLs (see CastMediaSource).
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return nullptr;
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}
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return new CefMediaSourceImpl(presentation_url);
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}
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void CefMediaRouterImpl::NotifyCurrentSinks() {
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StoreOrTriggerInitCallback(
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base::BindOnce(&CefMediaRouterImpl::NotifyCurrentSinksInternal, this));
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}
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void CefMediaRouterImpl::CreateRoute(
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CefRefPtr<CefMediaSource> source,
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CefRefPtr<CefMediaSink> sink,
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CefRefPtr<CefMediaRouteCreateCallback> callback) {
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StoreOrTriggerInitCallback(base::BindOnce(
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&CefMediaRouterImpl::CreateRouteInternal, this, source, sink, callback));
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}
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void CefMediaRouterImpl::NotifyCurrentRoutes() {
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StoreOrTriggerInitCallback(
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base::BindOnce(&CefMediaRouterImpl::NotifyCurrentRoutesInternal, this));
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}
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void CefMediaRouterImpl::InitializeRegistrationInternal(
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CefRefPtr<CefRegistrationImpl> registration) {
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DCHECK(ValidContext());
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registration->Initialize(browser_context_getter_);
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}
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void CefMediaRouterImpl::NotifyCurrentSinksInternal() {
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DCHECK(ValidContext());
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auto browser_context = GetBrowserContext(browser_context_getter_);
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if (!browser_context)
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return;
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browser_context->GetMediaRouterManager()->NotifyCurrentSinks();
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}
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void CefMediaRouterImpl::CreateRouteInternal(
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CefRefPtr<CefMediaSource> source,
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CefRefPtr<CefMediaSink> sink,
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CefRefPtr<CefMediaRouteCreateCallback> callback) {
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DCHECK(ValidContext());
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std::string error;
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auto browser_context = GetBrowserContext(browser_context_getter_);
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if (!browser_context) {
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error = "Context is not valid";
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} else if (!source) {
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error = "Source is empty or invalid";
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} else if (!sink) {
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error = "Sink is empty or invalid";
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} else if (!sink->IsCompatibleWith(source)) {
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error = "Sink is not compatible with source";
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}
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if (!error.empty()) {
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LOG(WARNING) << "Media route creation failed: " << error;
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if (callback) {
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callback->OnMediaRouteCreateFinished(CEF_MRCR_UNKNOWN_ERROR, error,
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nullptr);
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}
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return;
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}
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auto source_impl = static_cast<CefMediaSourceImpl*>(source.get());
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auto sink_impl = static_cast<CefMediaSinkImpl*>(sink.get());
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browser_context->GetMediaRouterManager()->CreateRoute(
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source_impl->source().id(), sink_impl->sink().id(), url::Origin(),
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base::BindOnce(&CefMediaRouterImpl::CreateRouteCallback, this, callback));
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}
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void CefMediaRouterImpl::NotifyCurrentRoutesInternal() {
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DCHECK(ValidContext());
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auto browser_context = GetBrowserContext(browser_context_getter_);
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if (!browser_context)
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return;
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browser_context->GetMediaRouterManager()->NotifyCurrentRoutes();
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}
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void CefMediaRouterImpl::CreateRouteCallback(
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CefRefPtr<CefMediaRouteCreateCallback> callback,
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const media_router::RouteRequestResult& result) {
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DCHECK(ValidContext());
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if (result.result_code() != media_router::RouteRequestResult::OK) {
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LOG(WARNING) << "Media route creation failed: " << result.error() << " ("
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<< result.result_code() << ")";
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}
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if (!callback)
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return;
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CefRefPtr<CefMediaRoute> route;
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if (result.result_code() == media_router::RouteRequestResult::OK &&
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result.route()) {
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route = new CefMediaRouteImpl(*result.route(), browser_context_getter_);
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}
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callback->OnMediaRouteCreateFinished(
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static_cast<cef_media_route_create_result_t>(result.result_code()),
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result.error(), route);
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}
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void CefMediaRouterImpl::StoreOrTriggerInitCallback(
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base::OnceClosure callback) {
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if (!CEF_CURRENTLY_ON_UIT()) {
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CEF_POST_TASK(
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CEF_UIT, base::BindOnce(&CefMediaRouterImpl::StoreOrTriggerInitCallback,
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this, std::move(callback)));
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return;
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}
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if (initialized_) {
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std::move(callback).Run();
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} else {
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init_callbacks_.emplace_back(std::move(callback));
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}
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}
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bool CefMediaRouterImpl::ValidContext() const {
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return CEF_CURRENTLY_ON_UIT() && initialized_;
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}
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// CefMediaRouter methods ------------------------------------------------------
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// static
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CefRefPtr<CefMediaRouter> CefMediaRouter::GetGlobalMediaRouter(
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CefRefPtr<CefCompletionCallback> callback) {
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return CefRequestContext::GetGlobalContext()->GetMediaRouter(callback);
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}
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