public bool TryFindCompatibleDevice(FFmpegStreamType streamType, out string device) // string preferredDevice,
{
var devices = _ffmpeg.GetDevicesOfType(streamType).ToList();
device = devices.FirstOrDefault()?.Name;
return(String.IsNullOrWhiteSpace(device) == false);
}
public bool StartRecordingProcess(FFmpegStreamType streamType, string device, string targetPath, string deviceArgs = null)
{
device.ThrowIf(String.IsNullOrWhiteSpace, nameof(device));
string uniqueTargetPath = EnsureTargetPathIsUnique(targetPath);
string inputArgs = _config.FFmpegStartRecordingArgs
.Replace("{streamType}", streamType)
.Replace("{deviceName}", device)
.Replace("{deviceArgs}", deviceArgs ?? String.Empty)
.Replace("{targetPath}", String.IsNullOrWhiteSpace(uniqueTargetPath) ? "-f null -" : $"\"{uniqueTargetPath}\"");
bool window = _config.ShowOutput;
bool logging = window == false && _config.LogOutput;
Process process = _ffmpeg.CreateFFmpegProcess(inputArgs, logging, window);
// logger.Info(LogHelper.Prepare($"Starting streamer \"{device}\" with args: {inputArgs}"));
try
{
process.EnableRaisingEvents = true;
process.Exited += process_Exited;
process.StartInfo.RedirectStandardInput = true; // so we can stop recording with writing "q" on the input
if (process.StartInfo.RedirectStandardError)
{
process.ErrorDataReceived += proc_ErrorDataReceived;
}
Process = process;
process.Start();
if (process.StartInfo.RedirectStandardError)
{
process.BeginErrorReadLine();
}
// logger.Info(LogHelper.Prepare($"Streamer {device} started"));
return(true);
}
catch (Exception ex)
{
//logger.Error(LogHelper.Prepare($"Streamer {device} failed."), ex);
}
return(false);
}
public IEnumerable <FFmpegDevice> GetDevicesOfType(FFmpegStreamType type)
{
string deviceType;
Regex regex = new Regex("\"[^@]*?\"", RegexOptions.Compiled | RegexOptions.CultureInvariant);
IEnumerable <FFmpegDevice> devices = GetDevicesListOutput()
.SkipWhile(l => TryMatchDeviceTypeHeader(l, out deviceType) == false || deviceType.Equals(type) == false) // skip while the header does not match the type
.Skip(1) // skip the header so it is not processed twice; alternative to check for the same device type in the next step with '|| header.Equals(type)'
.TakeWhile(l => TryMatchDeviceTypeHeader(l, out deviceType) == false) // take while other header is not reached
.Select(line => regex.Match(line))
.Where(match => match.Success)
.SelectMany(match => match.Captures.OfType <Capture>())
.Select(capture => capture.Value.Trim('\"'))
.Select(name => new FFmpegDevice(type, name));
return(devices);
}
public FFmpegDevice(FFmpegStreamType type, string name)
{
Type = type;
Name = name;
}