public async Task PlayAsync(string deviceUniqueId, string friendlyName)
{
DevicePlayStateChanged?.Invoke(deviceUniqueId, EState.Playing);
CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
if (m_ActivePlayers.ContainsKey(deviceUniqueId) == false)
{
m_ActivePlayers.Add(deviceUniqueId, cancellationTokenSource);
}
else
{
m_ActivePlayers[deviceUniqueId] = cancellationTokenSource;
Logger.Error("device {0} already existed in m_ActivePlayers", friendlyName);
}
try
{
await _PlayAsync(deviceUniqueId, cancellationTokenSource).ConfigureAwait(false);
}
catch (NullReferenceException e)
{
Logger.Error(e, "Error while trying to play, device {0}", friendlyName);
Snapcast.Instance.ShowNotification("Device not found", string.Format("Couldn't find sound device '{0}'. Has it been unplugged?", friendlyName));
DevicePlayStateChanged?.Invoke(deviceUniqueId, EState.Stopped);
m_ActivePlayers.Remove(deviceUniqueId);
if (System.Windows.MessageBox.Show(string.Format("The audio device '{0}' had been marked for auto-play, but is missing from the system. Would you like to remove it from auto-play?", friendlyName),
"Snap.Net - Auto-play device missing", System.Windows.MessageBoxButton.YesNo) == System.Windows.MessageBoxResult.Yes)
{
SnapSettings.SetAudioDeviceAutoPlay(deviceUniqueId, false, friendlyName);
}
}
}
public void Stop(string deviceUniqueId)
{
if (m_ActivePlayers.ContainsKey(deviceUniqueId))
{
m_ActivePlayers[deviceUniqueId].Cancel();
DevicePlayStateChanged?.Invoke(deviceUniqueId, EState.Stopped);
m_ActivePlayers.Remove(deviceUniqueId);
}
}
private async Task _PlayAsync(string deviceUniqueId, CancellationTokenSource cancellationTokenSource, int attempts = 0)
{
Device device = await FindDeviceAsync(deviceUniqueId);
if (device == null)
{
await Task.FromException(new NullReferenceException("Couldn't get device with uniqueId " + deviceUniqueId)).ConfigureAwait(false);
}
else
{
int deviceInstanceId = SnapSettings.DetermineInstanceId(deviceUniqueId, device.Index);
DeviceSettings deviceSettings = SnapSettings.GetDeviceSettings(deviceUniqueId);
if (deviceInstanceId != -1)
{
// update device's last seen:
deviceSettings.LastSeen = DateTime.Now;
SnapSettings.SaveDeviceSettings(deviceUniqueId, deviceSettings);
StringBuilder stdError = new StringBuilder();
string lastLine = "";
Action <string> stdOut = (line) =>
{
lastLine = line; // we only care about the last line from the output - in case there's an error (snapclient should probably be sending these to stderr though)
};
string resampleArg = "";
string hostIdArg = "";
CommandTask <CommandResult> task = null;
if (deviceSettings.UseSnapClientNet == false)
{
// Launch native client:
if (string.IsNullOrEmpty(deviceSettings.ResampleFormat) == false)
{
resampleArg = $"--sampleformat {deviceSettings.ResampleFormat}:0";
}
if (string.IsNullOrWhiteSpace(deviceSettings.HostId) == false)
{
hostIdArg = $"--hostID \"{deviceSettings.HostId}\"";
}
string command =
$"-h {SnapSettings.Server} -p {SnapSettings.PlayerPort} -s {device.Index} -i {deviceInstanceId} --sharingmode={deviceSettings.ShareMode.ToString().ToLower()} {resampleArg} {hostIdArg}";
Logger.Debug("Snapclient command: {0}", command);
task = Cli.Wrap(_SnapClient())
.WithArguments(command)
.WithStandardOutputPipe(PipeTarget.ToDelegate(stdOut))
.ExecuteAsync(cancellationTokenSource.Token);
}
else
{
// launch experimental .NET port of snapclient:
string command =
$"-h {SnapSettings.Server} -p {SnapSettings.PlayerPort} -s {device.Index} -i {deviceInstanceId}";
Logger.Debug("SnapClient.Net command: {0}", command);
task = Cli.Wrap(_SnapClientDotNet())
.WithArguments(command)
.WithStandardOutputPipe(PipeTarget.ToDelegate(stdOut))
.ExecuteAsync(cancellationTokenSource.Token);
}
Logger.Debug("Snapclient PID: {0}", task.ProcessId);
ChildProcessTracker.AddProcess(Process.GetProcessById(task.ProcessId)); // this utility helps us make sure the player process doesn't keep going if our process is killed / crashes
try
{
await task;
}
catch (CliWrap.Exceptions.CommandExecutionException e)
{
OnSnapClientErrored?.Invoke();
// add type to ShowNotification (level?), show notification with type and print log at type level
Snapcast.Instance.ShowNotification("Snapclient error", _BuildErrorMessage(device, lastLine));
// todo: parse WASAPI error code here and provide human friendly output
Logger.Error("Snapclient exited with non-zero exit code. Exception:");
Logger.Error(e.Message);
DevicePlayStateChanged?.Invoke(deviceUniqueId, EState.Stopped);
m_ActivePlayers.Remove(deviceUniqueId);
// settings might have changed while we were playing - refetch them
DeviceSettings nDeviceSettings = SnapSettings.GetDeviceSettings(deviceUniqueId);
if (nDeviceSettings.AutoRestartOnFailure == true && (attempts <= nDeviceSettings.RestartAttempts || nDeviceSettings.RestartAttempts == 0))
{
m_ActivePlayers.Add(deviceUniqueId, cancellationTokenSource);
DevicePlayStateChanged?.Invoke(deviceUniqueId, EState.Playing);
await _PlayAsync(deviceUniqueId, cancellationTokenSource, attempts + 1).ConfigureAwait(false);
}
}
}
}
DevicePlayStateChanged?.Invoke(deviceUniqueId, EState.Stopped);
m_ActivePlayers.Remove(deviceUniqueId);
}
public async Task PlayAsync(string deviceUniqueId, string friendlyName)
{
DevicePlayStateChanged?.Invoke(deviceUniqueId, EState.Playing);
CancellationTokenSource cancellationTokenSource = new CancellationTokenSource();
if (m_ActivePlayers.ContainsKey(deviceUniqueId) == false)
{
m_ActivePlayers.Add(deviceUniqueId, cancellationTokenSource);
}
else
{
m_ActivePlayers[deviceUniqueId] = cancellationTokenSource;
Logger.Error("device {0} already existed in m_ActivePlayers", friendlyName);
}
try
{
await _PlayAsync(deviceUniqueId, cancellationTokenSource).ConfigureAwait(false);
}
catch (NullReferenceException e)
{
DevicePlayStateChanged?.Invoke(deviceUniqueId, EState.Stopped);
m_ActivePlayers.Remove(deviceUniqueId);
Logger.Error(e, "Error while trying to play, device {0}", friendlyName);
if (SnapSettings.DeviceMissingBehaviour == SnapSettings.EDeviceMissingBehaviour.Default)
{
Snapcast.Instance.ShowNotification("Device not found", string.Format("Couldn't find sound device '{0}'. Has it been unplugged?", friendlyName));
}
else if (SnapSettings.DeviceMissingRetryIntervalSeconds > 0)
{
Timer timer = new Timer(SnapSettings.DeviceMissingRetryIntervalSeconds * 1000);
timer.Start();
timer.Elapsed += async(sender, args) =>
{
timer.Stop();
await PlayAsync(deviceUniqueId, friendlyName);
};
}
DeviceSettings settings = SnapSettings.GetDeviceSettings(deviceUniqueId);
if (settings.LastSeen == null) // in case we're migrating from a version that didn't have the LastSeen field yet
{
settings.LastSeen = DateTime.Now;
SnapSettings.SaveDeviceSettings(deviceUniqueId, settings);
}
// if a device hasn't been seen for x days, stop trying to auto-play it
if (SnapSettings.DeviceMissingExpiryDays != 0)
{
if (DateTime.Now - settings.LastSeen > new TimeSpan(SnapSettings.DeviceMissingExpiryDays, 0, 0, 0))
{
SnapSettings.SetAudioDeviceAutoPlay(deviceUniqueId, false, friendlyName);
}
}
// this prompt needs rethinking - it's only useful when a device has permanently disappeared
// maybe add an extra player list at the bottom with "not found" devices? (disable play button etc)
//if (System.Windows.MessageBox.Show(string.Format("The audio device '{0}' had been marked for auto-play, but is missing from the system. Would you like to remove it from auto-play?", friendlyName),
// "Snap.Net - Auto-play device missing", System.Windows.MessageBoxButton.YesNo) == System.Windows.MessageBoxResult.Yes)
//{
// SnapSettings.SetAudioDeviceAutoPlay(deviceUniqueId, false, friendlyName);
//}
}
}