cef/libcef/browser/media_router/media_router_impl.h
Marshall Greenblatt 03fd5b15da Add support for media device discovery and messaging (fixes issue #2900)
Chromium supports communication with media devices on the local network via
the Cast and DIAL protocols. This takes two primary forms:

1. Messaging, where strings representing state information are passed between
   the client and a dedicated receiver app on the media device. The receiver
   app communicates directly with an app-specific backend service to retrieve
   and possibly control media playback.
2. Tab/desktop mirroring, where the media contents are streamed directly from
   the browser to a generic streaming app on the media device and playback is
   controlled by the browser.

This change adds support for device discovery and messaging (but not
mirroring) with functionality exposed via the new CefMediaRouter interface.

To test: Navigate to http://tests/media_router in cefclient and follow the
on-screen instructions.
2020-03-27 15:54:39 -04:00

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1.8 KiB
C++

// Copyright (c) 2020 The Chromium Embedded Framework Authors. All rights
// reserved. Use of this source code is governed by a BSD-style license that
// can be found in the LICENSE file.
#ifndef CEF_LIBCEF_BROWSER_MEDIA_ROUTER_MEDIA_ROUTER_IMPL_H_
#define CEF_LIBCEF_BROWSER_MEDIA_ROUTER_MEDIA_ROUTER_IMPL_H_
#pragma once
#include "include/cef_media_router.h"
#include "libcef/browser/browser_context.h"
#include "chrome/common/media_router/mojom/media_router.mojom.h"
class CefRegistrationImpl;
// Implementation of the CefMediaRouter interface. May be created on any thread.
class CefMediaRouterImpl : public CefMediaRouter {
public:
CefMediaRouterImpl();
// Called on the UI thread after object creation and before any other object
// methods are executed on the UI thread.
void Initialize(const CefBrowserContext::Getter& browser_context_getter);
// CefMediaRouter methods.
CefRefPtr<CefRegistration> AddObserver(
CefRefPtr<CefMediaObserver> observer) override;
CefRefPtr<CefMediaSource> GetSource(const CefString& urn) override;
void NotifyCurrentSinks() override;
void CreateRoute(CefRefPtr<CefMediaSource> source,
CefRefPtr<CefMediaSink> sink,
CefRefPtr<CefMediaRouteCreateCallback> callback) override;
void NotifyCurrentRoutes() override;
private:
void InitializeRegistrationOnUIThread(
CefRefPtr<CefRegistrationImpl> registration);
void CreateRouteCallback(CefRefPtr<CefMediaRouteCreateCallback> callback,
const media_router::RouteRequestResult& result);
// Only accessed on the UI thread. Will be non-null after Initialize().
CefBrowserContext::Getter browser_context_getter_;
IMPLEMENT_REFCOUNTING(CefMediaRouterImpl);
DISALLOW_COPY_AND_ASSIGN(CefMediaRouterImpl);
};
#endif // CEF_LIBCEF_BROWSER_MEDIA_ROUTER_MEDIA_ROUTER_IMPL_H_