192 lines
7.4 KiB
C#
192 lines
7.4 KiB
C#
using Discord.Audio;
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using NadekoBot.Extensions;
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using System;
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using System.Diagnostics;
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using System.IO;
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using System.Linq;
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using System.Text.RegularExpressions;
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using System.Threading;
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using System.Threading.Tasks;
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using VideoLibrary;
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namespace NadekoBot.Classes.Music {
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public class SongInfo {
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public string Provider { get; internal set; }
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public string Title { get; internal set; }
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public string Uri { get; internal set; }
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}
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public class Song {
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public StreamState State { get; internal set; }
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public object PrettyName =>
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$"**【 {SongInfo.Title.TrimTo(55)} 】**`{(SongInfo.Provider ?? "-")}`";
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public SongInfo SongInfo { get; }
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private Song(SongInfo songInfo) {
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this.SongInfo = songInfo;
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}
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internal void Play(IAudioClient voiceClient, CancellationToken cancelToken) {
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var p = Process.Start(new ProcessStartInfo {
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FileName = "ffmpeg",
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Arguments = $"-i {SongInfo.Uri} -f s16le -ar 48000 -ac 2 pipe:1 -loglevel quiet",
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UseShellExecute = false,
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RedirectStandardOutput = true,
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});
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Task.Delay(2000); //give it 2 seconds to get some dataz
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int blockSize = 3840; // 1920 for mono
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byte[] buffer = new byte[blockSize];
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int read;
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while (!cancelToken.IsCancellationRequested) {
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read = p.StandardOutput.BaseStream.Read(buffer, 0, blockSize);
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if (read == 0)
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break; //nothing to read
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voiceClient.Send(buffer, 0, read);
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}
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voiceClient.Wait();
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}
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public static async Task<Song> ResolveSong(string query, MusicType musicType = MusicType.Normal) {
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if (string.IsNullOrWhiteSpace(query))
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throw new ArgumentNullException(nameof(query));
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if (musicType != MusicType.Local && IsRadioLink(query)) {
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musicType = MusicType.Radio;
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query = await HandleStreamContainers(query) ?? query;
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}
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try {
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if (musicType == MusicType.Local) {
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return new Song(new SongInfo {
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Uri = "\"" + Path.GetFullPath(query) + "\"",
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Title = Path.GetFileNameWithoutExtension(query),
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Provider = "Local File",
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});
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}
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else if (musicType == MusicType.Radio) {
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return new Song(new SongInfo {
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Uri = query,
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Title = $"{query}",
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Provider = "Radio Stream",
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});
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}
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else if (SoundCloud.Default.IsSoundCloudLink(query)) {
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var svideo = await SoundCloud.Default.GetVideoAsync(query);
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return new Song(new SongInfo {
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Title = svideo.FullName,
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Provider = "SoundCloud",
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Uri = svideo.StreamLink,
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});
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}
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else {
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var links = await SearchHelper.FindYoutubeUrlByKeywords(query);
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if (links == String.Empty)
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throw new OperationCanceledException("Not a valid youtube query.");
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var allVideos = await Task.Factory.StartNew(async () => await YouTube.Default.GetAllVideosAsync(links)).Unwrap();
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var videos = allVideos.Where(v => v.AdaptiveKind == AdaptiveKind.Audio);
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var video = videos
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.Where(v => v.AudioBitrate < 192)
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.OrderByDescending(v => v.AudioBitrate)
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.FirstOrDefault();
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if (video == null) // do something with this error
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throw new Exception("Could not load any video elements based on the query.");
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return new Song(new SongInfo {
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Title = video.Title.Substring(0, video.Title.Length - 10), // removing trailing "- You Tube"
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Provider = "YouTube",
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Uri = video.Uri,
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});
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}
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}
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catch (Exception ex) {
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Console.WriteLine($"Failed resolving the link.{ex.Message}");
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return null;
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}
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}
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private static async Task<string> HandleStreamContainers(string query) {
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string file = null;
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try {
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file = await SearchHelper.GetResponseAsync(query);
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}
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catch {
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return query;
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}
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if (query.Contains(".pls")) {
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//File1=http://armitunes.com:8000/
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//Regex.Match(query)
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try {
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var m = Regex.Match(file, "File1=(?<url>.*?)\\n");
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var res = m.Groups["url"]?.ToString();
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return res?.Trim();
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}
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catch {
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Console.WriteLine($"Failed reading .pls:\n{file}");
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return null;
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}
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}
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else if (query.Contains(".m3u")) {
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/*
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# This is a comment
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C:\xxx4xx\xxxxxx3x\xx2xxxx\xx.mp3
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C:\xxx5xx\x6xxxxxx\x7xxxxx\xx.mp3
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*/
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try {
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var m = Regex.Match(file, "(?<url>^[^#].*)", RegexOptions.Multiline);
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var res = m.Groups["url"]?.ToString();
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return res?.Trim();
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}
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catch {
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Console.WriteLine($"Failed reading .m3u:\n{file}");
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return null;
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}
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}
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else if (query.Contains(".asx")) {
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//<ref href="http://armitunes.com:8000"/>
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try {
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var m = Regex.Match(file, "<ref href=\"(?<url>.*?)\"");
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var res = m.Groups["url"]?.ToString();
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return res?.Trim();
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}
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catch {
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Console.WriteLine($"Failed reading .asx:\n{file}");
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return null;
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}
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}
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else if (query.Contains(".xspf")) {
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/*
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<?xml version="1.0" encoding="UTF-8"?>
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<playlist version="1" xmlns="http://xspf.org/ns/0/">
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<trackList>
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<track><location>file:///mp3s/song_1.mp3</location></track>
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*/
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try {
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var m = Regex.Match(file, "<location>(?<url>.*?)</location>");
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var res = m.Groups["url"]?.ToString();
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return res?.Trim();
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}
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catch {
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Console.WriteLine($"Failed reading .xspf:\n{file}");
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return null;
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}
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}
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return query;
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}
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private static bool IsRadioLink(string query) {
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return (query.StartsWith("http") ||
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query.StartsWith("ww"))
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&&
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(query.Contains(".pls") ||
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query.Contains(".m3u") ||
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query.Contains(".asx") ||
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query.Contains(".xspf"));
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}
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}
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}
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