/// <summary>
/// starts an ffmpeg process and sets up associated sockets
/// </summary>
private void OpenFileSegment()
{
try
{
_ffmpeg = OSTailoredCode.ConstructSubshell(
OSTailoredCode.IsUnixHost ? "ffmpeg" : Path.Combine(PathUtils.GetDllDirectory(), "ffmpeg.exe"),
$"-y -f nut -i - {_token.Commandline} \"{_baseName}{(_segment == 0 ? string.Empty : $"_{_segment}")}{_ext}\"",
checkStdout: false,
checkStderr: true // ffmpeg sends informative display to stderr, and nothing to stdout
);
_commandline = $"ffmpeg {_ffmpeg.StartInfo.Arguments}";
_ffmpeg.ErrorDataReceived += StderrHandler;
_stderr = new Queue <string>(Consolebuffer);
_ffmpeg.Start();
}
private void Download()
{
//the temp file is owned by this thread
var fn = TempFileManager.GetTempFilename("ffmpeg_download", ".7z", false);
try
{
using (var evt = new ManualResetEvent(false))
{
using (var client = new System.Net.WebClient())
{
System.Net.ServicePointManager.SecurityProtocol = System.Net.SecurityProtocolType.Tls12;
client.DownloadFileAsync(new Uri(FFmpegService.Url), fn);
client.DownloadProgressChanged += (object sender, System.Net.DownloadProgressChangedEventArgs e) =>
{
pct = e.ProgressPercentage;
};
client.DownloadFileCompleted += (object sender, System.ComponentModel.AsyncCompletedEventArgs e) =>
{
//we don't really need a status. we'll just try to unzip it when it's done
evt.Set();
};
for (; ;)
{
if (evt.WaitOne(10))
{
break;
}
//if the gui thread ordered an exit, cancel the download and wait for it to acknowledge
if (exiting)
{
client.CancelAsync();
evt.WaitOne();
break;
}
}
}
}
//throw new Exception("test of download failure");
//if we were ordered to exit, bail without wasting any more time
if (exiting)
{
return;
}
//try acquiring file
using (var hf = new HawkFile(fn))
{
using (var exe = OSTailoredCode.IsUnixHost ? hf.BindArchiveMember("ffmpeg") : hf.BindFirstOf(".exe"))
{
var data = exe !.ReadAllBytes();
//last chance. exiting, don't dump the new ffmpeg file
if (exiting)
{
return;
}
DirectoryInfo parentDir = new(Path.GetDirectoryName(FFmpegService.FFmpegPath) !);
if (!parentDir.Exists)
{
parentDir.Create();
}
File.WriteAllBytes(FFmpegService.FFmpegPath, data);
if (OSTailoredCode.IsUnixHost)
{
OSTailoredCode.ConstructSubshell("chmod", $"+x {FFmpegService.FFmpegPath}", checkStdout: false).Start();
Thread.Sleep(50); // Linux I/O flush idk
}
}
}
//make sure it worked
if (!FFmpegService.QueryServiceAvailable())
{
throw new Exception("download failed");
}
succeeded = true;
}
catch
{
failed = true;
}
finally
{
try { File.Delete(fn); }
catch { }
}
}