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/***
This file is part of snapcast
Copyright (C) 2014-2024 Johannes Pohl
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
***/
#pragma once
// local headers
#include "common/message/message.hpp"
#include "common/queue.hpp"
#include "control_server.hpp"
#include "server_settings.hpp"
#include "stream_session.hpp"
// 3rd party headers
#include <boost/asio/io_context.hpp>
#include <boost/asio/steady_timer.hpp>
// standard headers
#include <memory>
#include <mutex>
#include <vector>
using namespace streamreader;
using boost::asio::ip::tcp;
using acceptor_ptr = std::unique_ptr<tcp::acceptor>;
using session_ptr = std::shared_ptr<StreamSession>;
/// Forwars PCM data to the connected clients
/**
* Reads PCM data from several StreamSessions
* Accepts and holds client connections (StreamSession)
* Receives (via the StreamMessageReceiver interface) and answers messages from the clients
* Forwards PCM data to the clients
*/
class StreamServer : public StreamMessageReceiver
{
public:
StreamServer(boost::asio::io_context& io_context, const ServerSettings& serverSettings, StreamMessageReceiver* messageReceiver = nullptr);
virtual ~StreamServer();
void start();
void stop();
/// Send a message to all connceted clients
// void send(const msg::BaseMessage* message);
void addSession(std::shared_ptr<StreamSession> session);
void onChunkEncoded(const PcmStream* pcmStream, bool isDefaultStream, std::shared_ptr<msg::PcmChunk> chunk, double duration);
session_ptr getStreamSession(const std::string& clientId) const;
session_ptr getStreamSession(StreamSession* session) const;
private:
void startAccept();
void handleAccept(tcp::socket socket);
void cleanup();
/// Implementation of StreamMessageReceiver
void onMessageReceived(StreamSession* streamSession, const msg::BaseMessage& baseMessage, char* buffer) override;
void onDisconnect(StreamSession* streamSession) override;
mutable std::recursive_mutex sessionsMutex_;
std::vector<std::weak_ptr<StreamSession>> sessions_;
boost::asio::io_context& io_context_;
std::vector<acceptor_ptr> acceptor_;
boost::asio::steady_timer config_timer_;
ServerSettings settings_;
Queue<std::shared_ptr<msg::BaseMessage>> messages_;
StreamMessageReceiver* messageReceiver_;
};
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