public void Can_Redirect_Stdout()
{
RedirectedProcess proc = new RedirectedProcess("cmd", "/c echo hi from stdout");
var lret = proc.Start();
Console.WriteLine("Exit code: {0}", lret.Item1);
Console.WriteLine(lret.Item2);
Assert.AreEqual("hi from stdout", lret.Item2.TrimEnd(Environment.NewLine.ToArray()));
}
public void Can_Redirect_Large_Data()
{
using (var tmp = TempDir.Create())
{
var txtfile = Path.Combine(tmp.Name, "test.text");
string [] lines = Enumerable.Range(0, 10000).Select(x => String.Format("Line {0}", x)).ToArray();
File.WriteAllLines(txtfile, lines);
var type = new RedirectedProcess("cmd", String.Format("/C type {0}", txtfile));
var lret = type.Start();
Assert.AreEqual(String.Join(Environment.NewLine, lines), lret.Item2.TrimEnd(Environment.NewLine.ToCharArray()));
}
}
public static async Task ExecuteHardRemoval
(String sourceVideoFileName, String outputFileName,
IEnumerable <SubtitleParameters> subtitleParameters)
{
// AviSynth for x26x - Process source file using hard-coded subtitle removal algorithm
String avsFileName = Path.Combine(Path.GetTempPath(), "HardCodedSubtitleRemoval.avs");
// For some reason avs4x26x program cannot accept input file name with # character
String x264OutputFileName = Path.Combine(Path.GetTempPath(),
Path.GetFileNameWithoutExtension(outputFileName).Replace("#", String.Empty) + ".264");
File.WriteAllText(avsFileName, SubtitleRemovalHelper.WriteHardCodedSubtitleRemovalAVS
(sourceVideoFileName, ToolPaths.ToolsPath, subtitleParameters));
String arguments = $"-o \"{x264OutputFileName}\" \"{avsFileName}\"";
using (RedirectedProcess process = new RedirectedProcess(ToolPaths.AVS4x26xPath, arguments))
{
App.LogViewModel.RedirectedProcess = process;
await process.StartAsync();
}
File.Delete(avsFileName);
// FFVideoSource produces .ffindex files in the same folder of the source file
if (File.Exists(sourceVideoFileName + ".ffindex"))
{
File.Delete(sourceVideoFileName + ".ffindex");
}
// MP4Box - Pack AviSynth output into video stream
String videoOutputFileName = Path.Combine(Path.GetTempPath(),
Path.GetFileNameWithoutExtension(outputFileName) + ".v");
arguments = $"-add \"{x264OutputFileName}\" \"{videoOutputFileName}\"";
using (RedirectedProcess process = new RedirectedProcess(ToolPaths.MP4BoxPath, arguments))
{
App.LogViewModel.RedirectedProcess = process;
await process.StartAsync();
}
File.Delete(x264OutputFileName);
// FFProbe - Detect audio format of the source
arguments = $"-v error -select_streams a:0 -show_entries stream=codec_name -of default=nokey=1:noprint_wrappers=1" +
$" \"{sourceVideoFileName}\"";
String audioFormat = null;
using (RedirectedProcess process = new RedirectedProcess(ToolPaths.FFProbePath, arguments))
{
await Task.Run(() =>
{
process.Start();
audioFormat = process.StandardOutput.ReadToEnd().Trim();
process.WaitForExit();
});
}
if (!String.IsNullOrEmpty(audioFormat))
{
// FFMPEG - Extract audio stream
String audioOutputFileName = Path.Combine(Path.GetTempPath(),
Path.GetFileNameWithoutExtension(outputFileName) + $".{audioFormat}");
arguments = $"-i \"{sourceVideoFileName}\" -vn -acodec copy \"{audioOutputFileName}\"";
using (RedirectedProcess process = new RedirectedProcess(ToolPaths.FFMPEGPath, arguments))
{
App.LogViewModel.RedirectedProcess = process;
await process.StartAsync();
}
// FFMPEG - Remux audio stream with packed video stream
arguments = $"-i \"{videoOutputFileName}\" -i \"{audioOutputFileName}\" -map 0:v -map 1:a -c copy -y" +
$" \"{outputFileName}\"";
using (RedirectedProcess process = new RedirectedProcess(ToolPaths.FFMPEGPath, arguments))
{
App.LogViewModel.RedirectedProcess = process;
await process.StartAsync();
}
File.Delete(videoOutputFileName);
File.Delete(audioOutputFileName);
}
else
{
throw new InvalidDataException("Unexpected audio format detection error occurred.");
}
}