public void Record()
{
var rect = getRect();
var recordParam = new RecordParam()
{
Left = rect.X,
Top = rect.Y,
Width = rect.Width,
Height = rect.Height,
OutputPath = this.VideoPath
};
cancellationTokenSource = new CancellationTokenSource();
Recorder.Record(this.FFmpegPath, this.SelectedPreset.Arguments, recordParam, cancellationTokenSource.Token, new Progress <string>(s => this.addLog(s)))
.ContinueWith(t =>
{
if (t.IsFaulted)
{
this.addLog("Exception occured when recording: " + t.Exception.ToString());
}
this.IsRecording = false;
});
this.IsRecording = true;
}
public static Task Record(string ffmpegPath, string ffmpegArguments, RecordParam recordParam, CancellationToken cancellationToken, IProgress <string> logProgress)
{
return(Task.Run(() =>
{
// TODO: check more?
if (recordParam.OutputPath.IndexOf('"') >= 0)
{
throw new ArgumentException("OutputPath contains '\"'");
}
var argumentTemplate = ffmpegArguments;
var simpleDocument = new Cottle.Documents.SimpleDocument(argumentTemplate);
var store = new Cottle.Stores.BuiltinStore();
recordParam.SetToCottleStore(store);
var arguments = simpleDocument.Render(store);
string startLine = string.Format("Start: {0} {1}", ffmpegPath, arguments);
logProgress.Report(startLine);
var psi = new System.Diagnostics.ProcessStartInfo()
{
FileName = ffmpegPath,
Arguments = arguments,
CreateNoWindow = true,
UseShellExecute = false,
RedirectStandardInput = true,
RedirectStandardOutput = true,
RedirectStandardError = true,
};
var proc = new System.Diagnostics.Process()
{
StartInfo = psi,
};
proc.OutputDataReceived += (sender, e) =>
{
logProgress.Report(e.Data);
};
proc.ErrorDataReceived += (sender, e) =>
{
logProgress.Report(e.Data);
};
// TODO: wait process with modern non-blocking way
var mre = new ManualResetEventSlim();
proc.EnableRaisingEvents = true;
proc.Exited += (sender, e) =>
{
mre.Set();
};
proc.Start();
proc.BeginOutputReadLine();
proc.BeginErrorReadLine();
WaitHandle.WaitAny(new WaitHandle[] { mre.WaitHandle, cancellationToken.WaitHandle });
if (cancellationToken.IsCancellationRequested)
{
if (!proc.HasExited)
{
var io = proc.StandardInput;
io.WriteLine("q");
}
logProgress.Report("Cancellation requested. Pressed q and waiting...");
var waitResult = mre.Wait(10000);
if (waitResult)
{
logProgress.Report("The process finished.");
return;
}
else
{
logProgress.Report("The process is not finished. Killing it.");
proc.Kill();
return;
}
}
logProgress.Report(string.Format("Process finished: exit code: {0}", proc.ExitCode));
}));
}
