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// Copyright (c) 2020 Marshall A. Greenblatt. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "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 THE COPYRIGHT
// OWNER 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.
//
// ---------------------------------------------------------------------------
//
// The contents of this file must follow a specific format in order to
// support the CEF translator tool. See the translator.README.txt file in the
// tools directory for more information.
//
#ifndef CEF_INCLUDE_CEF_MEDIA_ROUTER_H_
#define CEF_INCLUDE_CEF_MEDIA_ROUTER_H_
#pragma once
#include <vector>
#include "include/cef_base.h"
#include "include/cef_callback.h"
#include "include/cef_registration.h"
class CefMediaObserver;
class CefMediaRoute;
class CefMediaRouteCreateCallback;
class CefMediaSink;
class CefMediaSinkDeviceInfoCallback;
class CefMediaSource;
///
/// Supports discovery of and communication with media devices on the local
/// network via the Cast and DIAL protocols. The methods of this class may be
/// called on any browser process thread unless otherwise indicated.
///
/*--cef(source=library)--*/
class CefMediaRouter : public virtual CefBaseRefCounted {
public:
///
/// Returns the MediaRouter object associated with the global request context.
/// If |callback| is non-NULL it will be executed asnychronously on the UI
/// thread after the manager's storage has been initialized. Equivalent to
/// calling CefRequestContext::GetGlobalContext()->GetMediaRouter().
///
/*--cef(optional_param=callback)--*/
static CefRefPtr<CefMediaRouter> GetGlobalMediaRouter(
CefRefPtr<CefCompletionCallback> callback);
///
/// Add an observer for MediaRouter events. The observer will remain
/// registered until the returned Registration object is destroyed.
///
/*--cef()--*/
virtual CefRefPtr<CefRegistration> AddObserver(
CefRefPtr<CefMediaObserver> observer) = 0;
///
/// Returns a MediaSource object for the specified media source URN. Supported
/// URN schemes include "cast:" and "dial:", and will be already known by the
/// client application (e.g. "cast:<appId>?clientId=<clientId>").
///
/*--cef()--*/
virtual CefRefPtr<CefMediaSource> GetSource(const CefString& urn) = 0;
///
/// Trigger an asynchronous call to CefMediaObserver::OnSinks on all
/// registered observers.
///
/*--cef()--*/
virtual void NotifyCurrentSinks() = 0;
///
/// Create a new route between |source| and |sink|. Source and sink must be
/// valid, compatible (as reported by CefMediaSink::IsCompatibleWith), and a
/// route between them must not already exist. |callback| will be executed
/// on success or failure. If route creation succeeds it will also trigger an
/// asynchronous call to CefMediaObserver::OnRoutes on all registered
/// observers.
///
/*--cef()--*/
virtual void CreateRoute(CefRefPtr<CefMediaSource> source,
CefRefPtr<CefMediaSink> sink,
CefRefPtr<CefMediaRouteCreateCallback> callback) = 0;
///
/// Trigger an asynchronous call to CefMediaObserver::OnRoutes on all
/// registered observers.
///
/*--cef()--*/
virtual void NotifyCurrentRoutes() = 0;
};
///
/// Implemented by the client to observe MediaRouter events and registered via
/// CefMediaRouter::AddObserver. The methods of this class will be called on the
/// browser process UI thread.
///
/*--cef(source=client)--*/
class CefMediaObserver : public virtual CefBaseRefCounted {
public:
typedef cef_media_route_connection_state_t ConnectionState;
///
/// The list of available media sinks has changed or
/// CefMediaRouter::NotifyCurrentSinks was called.
///
/*--cef()--*/
virtual void OnSinks(const std::vector<CefRefPtr<CefMediaSink>>& sinks) = 0;
///
/// The list of available media routes has changed or
/// CefMediaRouter::NotifyCurrentRoutes was called.
///
/*--cef()--*/
virtual void OnRoutes(
const std::vector<CefRefPtr<CefMediaRoute>>& routes) = 0;
///
/// The connection state of |route| has changed.
///
/*--cef()--*/
virtual void OnRouteStateChanged(CefRefPtr<CefMediaRoute> route,
ConnectionState state) = 0;
///
/// A message was received over |route|. |message| is only valid for
/// the scope of this callback and should be copied if necessary.
///
/*--cef()--*/
virtual void OnRouteMessageReceived(CefRefPtr<CefMediaRoute> route,
const void* message,
size_t message_size) = 0;
};
///
/// Represents the route between a media source and sink. Instances of this
/// object are created via CefMediaRouter::CreateRoute and retrieved via
/// CefMediaObserver::OnRoutes. Contains the status and metadata of a
/// routing operation. The methods of this class may be called on any browser
/// process thread unless otherwise indicated.
///
/*--cef(source=library)--*/
class CefMediaRoute : public virtual CefBaseRefCounted {
public:
///
/// Returns the ID for this route.
///
/*--cef()--*/
virtual CefString GetId() = 0;
///
/// Returns the source associated with this route.
///
/*--cef()--*/
virtual CefRefPtr<CefMediaSource> GetSource() = 0;
///
/// Returns the sink associated with this route.
///
/*--cef()--*/
virtual CefRefPtr<CefMediaSink> GetSink() = 0;
///
/// Send a message over this route. |message| will be copied if necessary.
///
/*--cef()--*/
virtual void SendRouteMessage(const void* message, size_t message_size) = 0;
///
/// Terminate this route. Will result in an asynchronous call to
/// CefMediaObserver::OnRoutes on all registered observers.
///
/*--cef()--*/
virtual void Terminate() = 0;
};
///
/// Callback interface for CefMediaRouter::CreateRoute. The methods of this
/// class will be called on the browser process UI thread.
///
/*--cef(source=client)--*/
class CefMediaRouteCreateCallback : public virtual CefBaseRefCounted {
public:
typedef cef_media_route_create_result_t RouteCreateResult;
///
/// Method that will be executed when the route creation has finished.
/// |result| will be CEF_MRCR_OK if the route creation succeeded. |error| will
/// be a description of the error if the route creation failed. |route| is the
/// resulting route, or empty if the route creation failed.
///
/*--cef(optional_param=error,optional_param=route)--*/
virtual void OnMediaRouteCreateFinished(RouteCreateResult result,
const CefString& error,
CefRefPtr<CefMediaRoute> route) = 0;
};
///
/// Represents a sink to which media can be routed. Instances of this object are
/// retrieved via CefMediaObserver::OnSinks. The methods of this class may
/// be called on any browser process thread unless otherwise indicated.
///
/*--cef(source=library)--*/
class CefMediaSink : public virtual CefBaseRefCounted {
public:
typedef cef_media_sink_icon_type_t IconType;
///
/// Returns the ID for this sink.
///
/*--cef()--*/
virtual CefString GetId() = 0;
///
/// Returns the name of this sink.
///
/*--cef()--*/
virtual CefString GetName() = 0;
///
/// Returns the icon type for this sink.
///
/*--cef(default_retval=CEF_MSIT_GENERIC)--*/
virtual IconType GetIconType() = 0;
///
/// Asynchronously retrieves device info.
///
/*--cef()--*/
virtual void GetDeviceInfo(
CefRefPtr<CefMediaSinkDeviceInfoCallback> callback) = 0;
///
/// Returns true if this sink accepts content via Cast.
///
/*--cef()--*/
virtual bool IsCastSink() = 0;
///
/// Returns true if this sink accepts content via DIAL.
///
/*--cef()--*/
virtual bool IsDialSink() = 0;
///
/// Returns true if this sink is compatible with |source|.
///
/*--cef()--*/
virtual bool IsCompatibleWith(CefRefPtr<CefMediaSource> source) = 0;
};
///
/// Callback interface for CefMediaSink::GetDeviceInfo. The methods of this
/// class will be called on the browser process UI thread.
///
/*--cef(source=client)--*/
class CefMediaSinkDeviceInfoCallback : public virtual CefBaseRefCounted {
public:
///
/// Method that will be executed asyncronously once device information has
/// been retrieved.
///
/*--cef()--*/
virtual void OnMediaSinkDeviceInfo(
const CefMediaSinkDeviceInfo& device_info) = 0;
};
///
/// Represents a source from which media can be routed. Instances of this object
/// are retrieved via CefMediaRouter::GetSource. The methods of this class may
/// be called on any browser process thread unless otherwise indicated.
///
/*--cef(source=library)--*/
class CefMediaSource : public virtual CefBaseRefCounted {
public:
///
/// Returns the ID (media source URN or URL) for this source.
///
/*--cef()--*/
virtual CefString GetId() = 0;
///
/// Returns true if this source outputs its content via Cast.
///
/*--cef()--*/
virtual bool IsCastSource() = 0;
///
/// Returns true if this source outputs its content via DIAL.
///
/*--cef()--*/
virtual bool IsDialSource() = 0;
};
#endif // CEF_INCLUDE_CEF_MEDIA_ROUTER_H_