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// Copyright 2020 The Chromium 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 CAST_STANDALONE_SENDER_LOOPING_FILE_CAST_AGENT_H_
#define CAST_STANDALONE_SENDER_LOOPING_FILE_CAST_AGENT_H_
#include <openssl/x509.h>
#include <memory>
#include <string>
#include <vector>
#include "absl/types/optional.h"
#include "cast/common/channel/cast_socket_message_port.h"
#include "cast/common/channel/virtual_connection_router.h"
#include "cast/common/public/cast_socket.h"
#include "cast/sender/public/sender_socket_factory.h"
#include "cast/standalone_sender/looping_file_sender.h"
#include "cast/streaming/environment.h"
#include "cast/streaming/sender_session.h"
#include "platform/api/scoped_wake_lock.h"
#include "platform/api/serial_delete_ptr.h"
#include "platform/base/error.h"
#include "platform/base/interface_info.h"
#include "platform/impl/task_runner.h"
namespace openscreen {
namespace cast {
// This class manages sender connections, starting with listening over TLS for
// connection attempts, constructing SenderSessions when OFFER messages are
// received, and linking Senders to the output decoder and SDL visualizer.
class LoopingFileCastAgent final
: public SenderSocketFactory::Client,
public VirtualConnectionRouter::SocketErrorHandler,
public SenderSession::Client {
public:
explicit LoopingFileCastAgent(TaskRunner* task_runner);
~LoopingFileCastAgent();
struct ConnectionSettings {
// The endpoint of the receiver we wish to connect to. Eventually this
// will come from discovery, instead of an endpoint here.
IPEndpoint receiver_endpoint;
// The path to the file that we want to play.
std::string path_to_file;
// The maximum bitrate. Default value means a reasonable default will be
// selected.
int max_bitrate = 0;
// Whether the stream should include video, or just be audio only.
bool should_include_video = true;
// Whether we should use the hacky RTP stream IDs for legacy android
// receivers, or if we should use the proper values.
bool use_android_rtp_hack = true;
};
void Connect(ConnectionSettings settings);
void Stop();
// SenderSocketFactory::Client overrides.
void OnConnected(SenderSocketFactory* factory,
const IPEndpoint& endpoint,
std::unique_ptr<CastSocket> socket) override;
void OnError(SenderSocketFactory* factory,
const IPEndpoint& endpoint,
Error error) override;
// VirtualConnectionRouter::SocketErrorHandler overrides.
void OnClose(CastSocket* cast_socket) override;
void OnError(CastSocket* socket, Error error) override;
// SenderSession::Client overrides.
void OnNegotiated(const SenderSession* session,
SenderSession::ConfiguredSenders senders,
capture_recommendations::Recommendations
capture_recommendations) override;
void OnError(const SenderSession* session, Error error) override;
private:
// Once we have a connection to the receiver we need to create and start
// a sender session. This method results in the OFFER/ANSWER exchange
// being completed and a session should be started.
void CreateAndStartSession();
// Helper for stopping the current session. This is useful for when we don't
// want to completely stop (e.g. an issue with a specific Sender) but need
// to terminate the current connection.
void StopCurrentSession();
// Member variables set as part of construction.
TaskRunner* const task_runner_;
VirtualConnectionRouter router_;
SerialDeletePtr<CastSocketMessagePort> message_port_;
SerialDeletePtr<SenderSocketFactory> socket_factory_;
SerialDeletePtr<TlsConnectionFactory> connection_factory_;
// Member variables set as part of starting up.
std::unique_ptr<Environment> environment_;
absl::optional<ConnectionSettings> connection_settings_;
SerialDeletePtr<ScopedWakeLock> wake_lock_;
// Member variables set as part of a sender connection.
// NOTE: currently we only support a single sender connection and a
// single streaming session.
std::unique_ptr<SenderSession> current_session_;
std::unique_ptr<LoopingFileSender> file_sender_;
};
} // namespace cast
} // namespace openscreen
#endif // CAST_STANDALONE_SENDER_LOOPING_FILE_CAST_AGENT_H_