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using System;
using System.Collections.Concurrent;
using System.Diagnostics;
using System.IO;
using System.Threading.Tasks;
using Discord;
using Discord.Audio;
namespace DiscoBot.Audio
{
public class AudioService
{
private readonly ConcurrentDictionary<ulong, IAudioClient> connectedChannels =
new ConcurrentDictionary<ulong, IAudioClient>();
public async Task JoinAudio(IGuild guild, IVoiceChannel target)
{
if (connectedChannels.TryGetValue(guild.Id, out var 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)
{
if (connectedChannels.TryRemove(guild.Id, out var 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;
}
if (connectedChannels.TryGetValue(guild.Id, out var client))
//await Log(LogSeverity.Debug, $"Starting playback of {path} in {guild.Name}");
using (var ffmpeg = 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;
throw new NotImplementedException("get channel data from server");
/*if (this.connectedChannels.TryGetValue())
{
//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 static 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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