Switched from sync transcoder to async transcoder

src/libs/utils/impl/ChildProcess.hpp

@@ -0,0 +1,37 @@
+#pragma once
+
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <filesystem>
+
+#include <boost/asio/io_context.hpp>
+#include <boost/asio/posix/stream_descriptor.hpp>
+
+#include "utils/IChildProcess.hpp"
+
+
+class ChildProcess : public IChildProcess
+{
+	public:
+		~ChildProcess();
+		ChildProcess(boost::asio::io_context& ioContext, const std::filesystem::path& path, const Args& args);
+
+	private:
+		void		asyncRead(std::byte* data, std::size_t bufferSize, ReadCallback callback) override;
+		void		asyncWaitForData(WaitCallback cb) override;
+		std::size_t	readSome(std::byte* data, std::size_t bufferSize) override;
+		bool		finished() override;
+
+		void	kill();
+		void	drain();
+		bool	wait(bool block); // return true if waited
+
+		using FileDescriptor = boost::asio::posix::stream_descriptor;
+
+		boost::asio::io_context&	_ioContext;
+		FileDescriptor				_childStdout;
+		::pid_t						_childPID {};
+		bool						_waited {};
+		std::optional<int>			_exitCode;
+};