public StreamTask(DiscordClient client, StreamRequest streamRequest, Stream bufferingStream)
{
this.streamRequest = streamRequest;
this.bufferingStream = bufferingStream;
this.client = client;
State = StreamTaskState.Queued;
}
public void CancelStreaming()
{
if (State != StreamTaskState.Queued && State != StreamTaskState.Playing)
{
return;
}
tokenSource?.Cancel(false);
audioTask?.Wait();
State = StreamTaskState.Completed;
}
public void StartStreaming()
{
if (State != StreamTaskState.Queued)
{
return;
}
State = StreamTaskState.Playing;
tokenSource = new CancellationTokenSource();
audioTask = Task.Run(StreamFunc, tokenSource.Token);
}
async Task StreamFunc()
{
CancellationToken cancellationToken = tokenSource.Token;
IAudioClient voiceClient = null;
TranscodingTask streamer = null;
try {
uint byteCounter = 0;
// Download and read audio from the url
streamer = new TranscodingTask(streamRequest, bufferingStream);
streamer.Start();
// Wait until we have at least a few kb transcoded or network stream done
while (true)
{
if (streamRequest.NetworkDone)
{
await Task.Delay(600);
break;
}
if (streamer.ReadyBytesLeft > 5 * 1024)
{
break;
}
await Task.Delay(200);
}
if (cancellationToken.IsCancellationRequested)
{
return;
}
// Start streaming to voice
await streamRequest.Channel.SendMessage($"Playing **{streamRequest.Title}** [{streamRequest.Length}]");
var audioService = client.Audio();
voiceClient = await audioService.Join(streamRequest.VoiceChannel);
int blockSize = 1920 * audioService.Config.Channels;
byte[] voiceBuffer = new byte[blockSize];
var ringBuffer = streamer.PCMOutput;
Stopwatch timeout = Stopwatch.StartNew();
while (true)
{
var readCount = ringBuffer.Read(voiceBuffer, 0, voiceBuffer.Length);
if (readCount == 0)
{
if (timeout.ElapsedMilliseconds > 1500)
{
Console.WriteLine("Audio stream timed out. Disconnecting.");
break;
}
await Task.Delay(200);
continue;
}
if (cancellationToken.IsCancellationRequested)
{
return;
}
timeout.Restart();
byteCounter += (uint)voiceBuffer.Length;
voiceClient.Send(voiceBuffer, 0, voiceBuffer.Length);
}
streamer.Cancel();
voiceClient.Wait();
} catch (Exception ex) {
await streamRequest.Channel.SendMessage($":musical_note: {streamRequest.User.Mention} Something went wrong, please report this. :angry: :anger:");
Console.WriteLine("Exception while playing music: " + ex);
} finally {
if (voiceClient != null)
{
await streamRequest.Channel.SendMessage($"Finished playing **{streamRequest.Title}**");
State = StreamTaskState.Completed;
streamer?.Cancel();
await voiceClient.Disconnect();
await Task.Delay(500);
}
}
}
