Added Audio Support

1 files changed, 88 insertions, 0 deletions

diff --git a/DiscoBot/AudioService.cs b/DiscoBot/AudioService.cs
new file mode 100644
index 0000000..bb4d21e
--- /dev/null
+++ b/DiscoBot/AudioService.cs
@@ -0,0 +1,88 @@
+using System.Collections.Concurrent;
+using System.Diagnostics;
+using System.IO;
+using System.Threading.Tasks;
+using Discord;
+using Discord.Audio;
+
+namespace DiscoBot
+{
+    public class AudioService
+    {
+        private readonly ConcurrentDictionary<ulong, IAudioClient> ConnectedChannels =
+            new ConcurrentDictionary<ulong, IAudioClient>();
+
+        public async Task JoinAudio(IGuild guild, IVoiceChannel target)
+        {
+            IAudioClient client;
+            if (ConnectedChannels.TryGetValue(guild.Id, out client))
+            {
+                return;
+            }
+
+            if (target.Guild.Id != guild.Id)
+            {
+                return;
+            }
+
+            var audioClient = await target.ConnectAsync();
+
+            if (ConnectedChannels.TryAdd(guild.Id, audioClient))
+            {
+                // If you add a method to log happenings from this service,
+                // you can uncomment these commented lines to make use of that.
+                //await Log(LogSeverity.Info, $"Connected to voice on {guild.Name}.");
+            }
+        }
+
+        public async Task LeaveAudio(IGuild guild)
+        {
+            IAudioClient client;
+            if (ConnectedChannels.TryRemove(guild.Id, out client))
+            {
+                await client.StopAsync();
+                //await Log(LogSeverity.Info, $"Disconnected from voice on {guild.Name}.");
+            }
+        }
+
+        public async Task SendAudioAsync(IGuild guild, IMessageChannel channel, string path)
+        {
+            // Your task: Get a full path to the file if the value of 'path' is only a filename.
+            if (!File.Exists(path))
+            {
+                await channel.SendMessageAsync("File does not exist.");
+                return;
+            }
+
+            IAudioClient client;
+            if (ConnectedChannels.TryGetValue(guild.Id, out client))
+            {
+                //await Log(LogSeverity.Debug, $"Starting playback of {path} in {guild.Name}");
+                using (var ffmpeg = Process.Start(path))
+                using (var stream = client.CreatePCMStream(AudioApplication.Music))
+                {
+                    try
+                    {
+                        await ffmpeg.StandardOutput.BaseStream.CopyToAsync(stream);
+                    }
+                    finally
+                    {
+                        await stream.FlushAsync();
+                    }
+                }
+            }
+        }
+
+        private Process CreateStream(string path)
+        {
+            return Process.Start(
+                new ProcessStartInfo
+                    {
+                        FileName = "ffmpeg.exe",
+                        Arguments = $"-hide_banner -loglevel panic -i \"{path}\" -ac 2 -f s16le -ar 48000 pipe:1",
+                        UseShellExecute = false,
+                        RedirectStandardOutput = true
+                    });
+        }
+    }
+}