public FFmpegExceptionCatcherTests()
{
_sut = new FFmpegExceptionCatcher();
}
internal Task <bool> RunProcess(
string args,
CancellationToken cancellationToken,
ProcessPriorityClass?priority)
{
return(Task.Factory.StartNew(() =>
{
_outputLog = new List <string>();
bool pipedOutput = OnVideoDataReceived != null;
var process = RunProcess(args, FFmpegPath, priority, true, pipedOutput, true);
var processId = process.Id;
using (process)
{
process.ErrorDataReceived += (sender, e) => ProcessOutputData(e, args, processId);
process.BeginErrorReadLine();
if (pipedOutput)
{
Task.Run(() => ProcessVideoData(process, cancellationToken), cancellationToken);
}
var ctr = cancellationToken.Register(() =>
{
if (Environment.OSVersion.Platform != PlatformID.Win32NT)
{
try
{
process.StandardInput.Write("q");
Task.Delay(1000 * 5).GetAwaiter().GetResult();
if (!process.HasExited)
{
process.CloseMainWindow();
process.Kill();
_wasKilled = true;
}
}
catch (InvalidOperationException)
{
}
}
});
using (ctr)
{
using (var processEnded = new ManualResetEvent(false))
{
processEnded.SetSafeWaitHandle(new SafeWaitHandle(process.Handle, false));
int index = WaitHandle.WaitAny(new[] { processEnded, cancellationToken.WaitHandle });
// If the signal came from the caller cancellation token close the window
if (index == 1 &&
!process.HasExited)
{
process.CloseMainWindow();
process.Kill();
_wasKilled = true;
}
else if (index == 0 && !process.HasExited)
{
// Workaround for linux: https://github.com/dotnet/corefx/issues/35544
process.WaitForExit();
}
}
cancellationToken.ThrowIfCancellationRequested();
if (_wasKilled)
{
throw new ConversionException("Cannot stop process. Killed it.", args);
}
if (cancellationToken.IsCancellationRequested)
{
return false;
}
string output = string.Join(Environment.NewLine, _outputLog.ToArray());
var exceptionsCatcher = new FFmpegExceptionCatcher();
exceptionsCatcher.CatchFFmpegErrors(output, args);
if (process.ExitCode != 0 && _outputLog.Any() && !_outputLog.Last().Contains("dummy"))
{
throw new ConversionException(output, args);
}
}
}
return true;
},
cancellationToken,
TaskCreationOptions.LongRunning,
TaskScheduler.Default));
}
internal Task <bool> RunProcess(
string args,
CancellationToken cancellationToken)
{
return(Task.Factory.StartNew(() =>
{
_outputLog = new List <string>();
var process = RunProcess(args, FFmpegPath, Priority, true, true, true);
using (process)
{
process.ErrorDataReceived += (sender, e) => ProcessOutputData(e, args);
process.BeginErrorReadLine();
// VSTHRD101: Avoid using async lambda for a void returning delegate type, becaues any exceptions not handled by the delegate will crash the process
// https://github.com/Microsoft/vs-threading/blob/master/doc/analyzers/VSTHRD101.md
var ctr = cancellationToken.Register(() =>
{
if (Environment.OSVersion.Platform != PlatformID.Win32NT)
{
try
{
process.StandardInput.Write("q");
Task.Delay(1000 * 5).ConfigureAwait(false).GetAwaiter().GetResult();
}
catch (InvalidOperationException)
{
}
finally
{
if (!process.HasExited)
{
process.CloseMainWindow();
process.Kill();
_wasKilled = true;
}
}
}
});
using (ctr)
{
using (var processEnded = new ManualResetEvent(false))
{
processEnded.SetSafeWaitHandle(new SafeWaitHandle(process.Handle, false));
int index = WaitHandle.WaitAny(new[] { processEnded, cancellationToken.WaitHandle });
// If the signal came from the caller cancellation token close the window
if (index == 1 &&
!process.HasExited)
{
process.CloseMainWindow();
process.Kill();
_wasKilled = true;
}
else if (index == 0 && !process.HasExited)
{
// Workaround for linux: https://github.com/dotnet/corefx/issues/35544
process.WaitForExit();
}
}
cancellationToken.ThrowIfCancellationRequested();
if (_wasKilled)
{
throw new ConversionException("Cannot stop process. Killed it.", args);
}
if (cancellationToken.IsCancellationRequested)
{
return false;
}
string output = string.Join(Environment.NewLine, _outputLog.ToArray());
var exceptionsCatcher = new FFmpegExceptionCatcher();
exceptionsCatcher.CatchFFmpegErrors(output, args);
if (process.ExitCode != 0)
{
throw new ConversionException(output, args);
}
}
}
return true;
},
cancellationToken,
TaskCreationOptions.LongRunning,
TaskScheduler.Default));
}
