From 351067a5203307fc0c1a14ae2be84eae71246af9 Mon Sep 17 00:00:00 2001
From: TrueDoctor <d-kobert@web.de>
Date: Wed, 11 Apr 2018 14:19:57 +0200
Subject: Added possibillity for service based soundplaying

---
 DiscoBot/Audio/AudioService.cs | 101 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 DiscoBot/Audio/AudioService.cs

(limited to 'DiscoBot/Audio/AudioService.cs')

diff --git a/DiscoBot/Audio/AudioService.cs b/DiscoBot/Audio/AudioService.cs
new file mode 100644
index 0000000..25beed0
--- /dev/null
+++ b/DiscoBot/Audio/AudioService.cs
@@ -0,0 +1,101 @@
+namespace DiscoBot.Audio
+{
+    using System.Collections.Concurrent;
+    using System.Diagnostics;
+    using System.IO;
+    using System.Threading.Tasks;
+
+    using Discord;
+    using Discord.Audio;
+
+    public class AudioService
+    {
+        private readonly ConcurrentDictionary<ulong, IAudioClient> connectedChannels = new ConcurrentDictionary<ulong, IAudioClient>();
+
+        public async Task JoinAudio(IGuild guild, IVoiceChannel target)
+        {
+            IAudioClient client;
+            if (this.connectedChannels.TryGetValue(guild.Id, out client))
+            {
+                return;
+            }
+
+            if (target.Guild.Id != guild.Id)
+            {
+                return;
+            }
+
+            var audioClient = await target.ConnectAsync();
+
+            if (this.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 (this.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) && false)
+            {
+                await channel.SendMessageAsync("File does not exist.");
+                return;
+            }
+            IAudioClient client;
+            if (this.connectedChannels.TryGetValue(guild.Id, out client))
+            {
+                //await Log(LogSeverity.Debug, $"Starting playback of {path} in {guild.Name}");
+                using (var ffmpeg = this.CreateStream(path))
+                using (var stream = client.CreatePCMStream(AudioApplication.Music))
+                {
+                    try { await ffmpeg.StandardOutput.BaseStream.CopyToAsync(stream); }
+                    finally { await stream.FlushAsync(); }
+                }
+            }
+        }
+
+        public async Task SendAudioAsync(string path, int Volume)
+        {
+            // Your task: Get a full path to the file if the value of 'path' is only a filename.
+            if (!File.Exists(path) && false)
+            {
+                //await channel.SendMessageAsync("File does not exist.");
+                return;
+            }
+
+            if (this.connectedChannels.TryGetValue(Dsa.GeneralContext.Guild.Id, out var client))
+            {
+                //await Log(LogSeverity.Debug, $"Starting playback of {path} in {guild.Name}");
+                using (var ffmpeg = this.CreateStream(path))
+                using (var stream = client.CreatePCMStream(AudioApplication.Voice))
+                {
+                    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
+            });
+        }
+    }
+}
-- 
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