private static void SetupDownload(YoutubeDL ydl, CancellationToken cancellationToken)
{
if (cancellationToken.IsCancellationRequested)
{
return;
}
ydl.process = new Process {
StartInfo = ydl.processStartInfo, EnableRaisingEvents = true
};
ydl.stdOutputTokenSource = new CancellationTokenSource();
ydl.stdErrorTokenSource = new CancellationTokenSource();
ydl.process.Exited += (sender, args) => ydl.KillStandardEventHandlers();
// Note that synchronous calls are needed in order to process the output line by line.
// Asynchronous output reading results in batches of output lines coming in all at once.
// The following two threads convert synchronous output reads into asynchronous events.
ThreadPool.QueueUserWorkItem(ydl.StandardOutput, ydl.stdOutputTokenSource.Token);
ThreadPool.QueueUserWorkItem(ydl.StandardError, ydl.stdErrorTokenSource.Token);
if (ydl.Info.set)
{
ydl.StandardOutputEvent += (sender, output) => ydl.Info.ParseOutput(sender, output.Trim());
ydl.StandardErrorEvent += (sender, output) => ydl.Info.ParseError(sender, output.Trim());
}
ydl.process.Start();
ydl.downloadProcessID = ydl.process.Id;
}