mirror of
https://github.com/badaix/snapcast.git
synced 2025-06-20 03:31:43 +02:00
126 lines
4.1 KiB
C++
126 lines
4.1 KiB
C++
/***
|
|
This file is part of snapcast
|
|
Copyright (C) 2014-2025 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 "jsonrpcpp.hpp"
|
|
#include "server_settings.hpp"
|
|
|
|
// 3rd party headers
|
|
#include <boost/asio/any_io_executor.hpp>
|
|
#include <boost/process.hpp>
|
|
|
|
// standard headers
|
|
#include <filesystem>
|
|
#include <map>
|
|
#include <string>
|
|
|
|
|
|
namespace bp = boost::process;
|
|
|
|
using json = nlohmann::json;
|
|
|
|
|
|
namespace streamreader
|
|
{
|
|
|
|
|
|
/// Stream control base class
|
|
/// Controls a stream via "command" (play, pause, next, ...)
|
|
/// Provides status information (playback status, position, metadata, ...)
|
|
class StreamControl
|
|
{
|
|
public:
|
|
/// Request handler coming from the plugin
|
|
using OnRequest = std::function<void(const jsonrpcpp::Request& response)>;
|
|
/// Notification handler coming from the plugin
|
|
using OnNotification = std::function<void(const jsonrpcpp::Notification& response)>;
|
|
/// Response handler coming from the plugin
|
|
using OnResponse = std::function<void(const jsonrpcpp::Response& response)>;
|
|
/// Log handler coming from the plugin
|
|
using OnLog = std::function<void(std::string message)>;
|
|
|
|
/// c'tor
|
|
explicit StreamControl(const boost::asio::any_io_executor& executor);
|
|
/// d'tor
|
|
virtual ~StreamControl() = default;
|
|
|
|
/// Start the stream control, calls abstract "doStart"
|
|
void start(const std::string& stream_id, const ServerSettings& server_setttings, const OnNotification& notification_handler,
|
|
const OnRequest& request_handler, const OnLog& log_handler);
|
|
|
|
/// Issue a command to the stream, calls abstract "doCommand"
|
|
void command(const jsonrpcpp::Request& request, const OnResponse& response_handler);
|
|
|
|
protected:
|
|
/// abstract "command" interface: send a json request to the plugin
|
|
virtual void doCommand(const jsonrpcpp::Request& request) = 0;
|
|
/// abstract "start" interface: starts and initializes the plugin
|
|
virtual void doStart(const std::string& stream_id, const ServerSettings& server_setttings) = 0;
|
|
|
|
/// a @p json message has been received from the plugin
|
|
void onReceive(const std::string& json);
|
|
/// a @p message log request has been received from the plugin
|
|
void onLog(std::string message);
|
|
|
|
/// asio executor
|
|
boost::asio::any_io_executor executor_;
|
|
|
|
private:
|
|
OnRequest request_handler_;
|
|
OnNotification notification_handler_;
|
|
OnLog log_handler_;
|
|
|
|
std::map<jsonrpcpp::Id, OnResponse> request_callbacks_;
|
|
};
|
|
|
|
|
|
/// Script based stream control
|
|
/// Executes a script (e.g. Python) and communicates via stdout/stdin with the script
|
|
class ScriptStreamControl : public StreamControl
|
|
{
|
|
public:
|
|
/// c'tor
|
|
ScriptStreamControl(const boost::asio::any_io_executor& executor, const std::filesystem::path& plugin_dir, std::string script, std::string params);
|
|
/// d'tor
|
|
virtual ~ScriptStreamControl() = default;
|
|
|
|
private:
|
|
/// Send a message to stdin of the process
|
|
void doCommand(const jsonrpcpp::Request& request) override;
|
|
void doStart(const std::string& stream_id, const ServerSettings& server_setttings) override;
|
|
|
|
void stderrReadLine();
|
|
void stdoutReadLine();
|
|
|
|
bp::child process_;
|
|
bp::pipe pipe_stdout_;
|
|
bp::pipe pipe_stderr_;
|
|
std::unique_ptr<boost::asio::posix::stream_descriptor> stream_stdout_;
|
|
std::unique_ptr<boost::asio::posix::stream_descriptor> stream_stderr_;
|
|
boost::asio::streambuf streambuf_stdout_;
|
|
boost::asio::streambuf streambuf_stderr_;
|
|
|
|
std::string script_;
|
|
std::string params_;
|
|
bp::opstream in_;
|
|
};
|
|
|
|
} // namespace streamreader
|