src/main/java/moe/nekojimi/chords/Chords.java

@@ -30,6 +30,7 @@ import net.dv8tion.jda.api.entities.*;
 import net.dv8tion.jda.api.entities.channel.middleman.AudioChannel;
 import net.dv8tion.jda.api.events.guild.voice.GuildVoiceUpdateEvent;
 import net.dv8tion.jda.api.events.message.MessageReceivedEvent;
+import net.dv8tion.jda.api.events.message.MessageReceivedEvent;
 import net.dv8tion.jda.api.hooks.ListenerAdapter;
 import net.dv8tion.jda.api.managers.AudioManager;
 import net.dv8tion.jda.api.requests.GatewayIntent;
@@ -64,6 +65,8 @@ public final class Chords extends ListenerAdapter
 
     private AudioChannel currentVoiceChannel = null;
 
+    private int trackNumber = 1;
+
     private final Map<String, Playlist> playlists = new HashMap<>();
 
     /**
@@ -253,29 +256,49 @@ public final class Chords extends ListenerAdapter
         }
     }
 
-    public void queueDownload(SongRequest request)
+    public Song queueDownload(SongRequest request)
     {
-//        Song song;
+        Song song;
-//        if (request.getUrl() != null)
+        if (request.getUrl() != null)
-//        {
+        {
-//            song = new Song(request.getUrl());
+            song = new Song(request.getUrl());
-//        } else
+        } else
-//        {
+        {
-//            // interpret search result
+            // interpret search result
-//            throw new UnsupportedOperationException("Not supported yet.");
+            throw new UnsupportedOperationException("Not supported yet.");
-//        }
+        }
-//        if (request.getInvocation().getRequestMessage() != null)
+        if (request.getInvocation().getRequestMessage() != null)
-//        {
+        {
-//
+            song.setRequestedBy(request.getInvocation().getRequestMessage().getAuthor().getName());
-//        }
+            song.setRequestedIn(request.getInvocation().getRequestMessage().getChannel().getId());
-//        song.setNumber(trackNumber);
+        }
-//        trackNumber++;
+        song.setNumber(trackNumber);
-//        request.addSong(song);
+        trackNumber++;
+        request.setSong(song);
         request.getInvocation().respond("Request pending...");
         downloader.accept(new Downloader.DownloadTask(request, queueManager));
-//        return song;
+        return song;
     }
 
+//    public Song queueDownload(final URL url, GuildMessageReceivedEvent event)
+//    {
+//        Song song = new Song(url);
+//        song.setRequestedBy(event.getAuthor().getName());
+//        song.setRequestedIn(event.getChannel().getId());
+//        song.setNumber(trackNumber);
+//        trackNumber++;
+//        downloader.accept(new Downloader.DownloadTask(song, musicHandler));
+//        return song;
+//    }
+//
+//    public Song queueDownload(Result res, GuildMessageReceivedEvent event)
+//    {
+//        Song song = queueDownload(res.getLink(), event);
+//        song.setArtist(res.getArtist());
+//        song.setTitle(res.getTitle());
+//        song.setNumber(trackNumber);
+//        return song;
+//    }
     public void setStatus(Song nowPlaying)
     {
         jda.getPresence().setActivity(Activity.listening(nowPlaying.toString()));
@@ -391,6 +414,11 @@ public final class Chords extends ListenerAdapter
         return queueManager;
     }
 
+    public int getTrackNumber()
+    {
+        return trackNumber;
+    }
+
     public static Settings getSettings()
     {
         return settings;
@@ -409,17 +437,13 @@ public final class Chords extends ListenerAdapter
         @Override
         public void accept(SongRequest request, Exception ex)
         {
-            String response = "";
+            Song song = request.getSong();
-            if (request.getSongs().size() > 1)
-                response += "Downloading " + request.getSongs().size() + " tracks:\n";
-            for (Song song : request.getSongs())
-            {
 //            TextChannel channel = jda.getTextChannelById(song.getRequestedIn());
 //            String bracketNo = "[" + song.getNumber() + "] ";
             if (ex == null)
-                    if (song.getLocation() != null && song.getProgress() >= 100)
+                if (song.getLocation() != null && request.getProgress() >= 100)
                 {
-                        response += ("Finished downloading " + song + ", added to queue!");
+                    request.getInvocation().respond("Finished downloading " + song + ", added to queue!");
                     log("DOWN", "Downloaded " + song);
                 } else
                 {
@@ -433,23 +457,19 @@ public final class Chords extends ListenerAdapter
                         String bitFmt = (bitrate <= 0 ? "??" : bitrate) + "k";
                         formatDetails = " (" + bitFmt + ", " + sizeFmt + ")";
                     }
-
                     String progressDetails = "";
-                        if (song.getProgress() >= 0)
+                    if (request.getProgress() >= 0)
-                            progressDetails = " [" + String.format("%.1f", song.getProgress()) + "%]";
+                    {
-
+                        progressDetails = " [" + String.format("%.1f", request.getProgress()) + "%]";
-                        response += ("Now downloading " + song + formatDetails + progressDetails + " ...");
+                    }
+                    request.getInvocation().respond("Now downloading " + song + formatDetails + progressDetails + " ...");
                     log("DOWN", "Downloading " + song + "...");
                 }
             else
             {
-                    response += ("Failed to download " + song + "! Reason: " + ex.getMessage());
+                request.getInvocation().respond("Failed to download " + song + "! Reason: " + ex.getMessage());
                 log("DOWN", "Failed to download " + song + "! Reason: " + ex.getMessage());
             }
-                response += "\n";
-            }
-            if (!response.isEmpty())
-                request.getInvocation().respond(response);
         }
     }
 

src/main/java/moe/nekojimi/chords/Downloader.java

@@ -8,11 +8,15 @@ package moe.nekojimi.chords;
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStream;
-import java.io.StringReader;
 import java.nio.charset.Charset;
 import java.nio.file.Files;
-import java.util.*;
+import java.util.ArrayList;
-import java.util.concurrent.*;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Scanner;
+import java.util.concurrent.LinkedBlockingDeque;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
 import java.util.function.BiConsumer;
 import java.util.function.Consumer;
 import java.util.logging.Level;
@@ -35,7 +39,7 @@ public class Downloader implements Consumer<DownloadTask>
 {
 
     private static final int DOWNLOAD_TIMEOUT = 300;
-    private static final int INFO_TIMEOUT = 60;
+    private static final int INFO_TIMEOUT = 30;
     private static final int FORMAT_TIMEOUT = 5;
 
     private static final int BITRATE_TARGET = (int) AudioSendHandler.INPUT_FORMAT.getSampleRate();
@@ -43,19 +47,15 @@ public class Downloader implements Consumer<DownloadTask>
     public static final Pattern DESTINATION_PATTERN = Pattern.compile("Destination: (.*\\.wav)");
     public static final Pattern PROGRESS_PATTERN = Pattern.compile("\\[download\\].*?([\\d\\.]+)%");
     private static final Pattern ETA_PATTERN = Pattern.compile("\\[download\\].*?ETA\\s+(\\d{1,2}:\\d{2})");
-    private static final Pattern DOWNLOAD_ITEM_PATTERN = Pattern.compile("\\[download\\] Downloading item (\\d+) of (\\d+)");
 
     private final List<DownloadTask> downloadQueue = new LinkedList<>();
     private final LinkedBlockingDeque<Runnable> workQueue = new LinkedBlockingDeque<>();
     private final ThreadPoolExecutor executor = new ThreadPoolExecutor(2, 4, 30, TimeUnit.SECONDS, workQueue);
-    private final ScheduledExecutorService scheduler = new ScheduledThreadPoolExecutor(1);
 //    private Consumer<Song> next;
     private BiConsumer<SongRequest, Exception> messageHandler;
 
     private File downloadDir = null;
 
-    private int trackNumber = 1;
-
     public Downloader()
     {
 
@@ -64,22 +64,21 @@ public class Downloader implements Consumer<DownloadTask>
     @Override
     public void accept(DownloadTask task)
     {
-        // if all songs of the request are already downloaded, just skip
+        // if already downloaded, just skip
-        if (!task.request.getSongs().isEmpty() && task.request.getSongs().stream().allMatch((t) -> t.isDownloaded()))
+        Song song = task.request.getSong();
+        if (song.isDownloaded())
         {
-            for (Song song : task.request.getSongs())
             task.getDestination().accept(song);
             return;
         }
 
         downloadQueue.add(task);
-        getInfo(task.request);
+        getInfo(song);
-        // TODO: get info should also use the thread pool
         executor.submit(() ->
         {
             try
             {
-//                getFormats(song);
+                getFormats(song);
                 download(task);
             } catch (Exception ex)
             {
@@ -88,9 +87,11 @@ public class Downloader implements Consumer<DownloadTask>
         });
     }
 
-    private List<Format> sortFormats(Collection<Format> input)
+    private void chooseFormats(Song song)
     {
-        List<Format> formats = new ArrayList<>(input);
+        List<Format> formats = song.getFormats();
+        if (formats.isEmpty())
+            return;
         formats.sort((Format a, Format b) ->
         {
             // audio only preferred to video
@@ -126,7 +127,7 @@ public class Downloader implements Consumer<DownloadTask>
             }
             return -comp;
         });
-        return formats;
+        song.setFormats(formats);
     }
 
     private void getFormats(Song song)
@@ -204,26 +205,14 @@ public class Downloader implements Consumer<DownloadTask>
         }
     }
 
-    private List<Song> getInfo(SongRequest request)
+    private void getInfo(Song song)
     {
-        List<Song> ret = new ArrayList<>();
         try
         {
-            String cmd = Chords.getSettings().getYtdlCommand() + " --skip-download --print-json " + request.getUrl().toString();
+            String cmd = Chords.getSettings().getYtdlCommand() + " --skip-download --print-json " + song.getUrl().toString();
             Process exec = runCommand(cmd, INFO_TIMEOUT);
             InputStream input = exec.getInputStream();
-
+            JsonReader reader = Json.createReader(input);
-            // read each line as JSON, turn each into a song object
-            Scanner sc = new Scanner(input);
-            while (sc.hasNextLine())
-            {
-                Song song = new Song(request.getUrl());
-                song.setNumber(trackNumber);
-                trackNumber++;
-                request.addSong(song);
-
-                String line = sc.nextLine();
-                JsonReader reader = Json.createReader(new StringReader(line));
             JsonObject object = reader.readObject();
             if (song.getTitle() == null)
                 song.setTitle(object.getString("title", null));
@@ -242,14 +231,10 @@ public class Downloader implements Consumer<DownloadTask>
                 }
                 song.setFormats(formats);
             }
-
-                ret.add(song);
-            }
         } catch (Exception ex)
         {
             Logger.getLogger(Downloader.class.getName()).log(Level.SEVERE, null, ex);
         }
-        return ret;
     }
 
     private File getDownloadDir() throws IOException
@@ -259,35 +244,15 @@ public class Downloader implements Consumer<DownloadTask>
         return downloadDir;
     }
 
-    private Song getSongFromRequest(SongRequest request, int idx)
-    {
-        // if there's less songs in the request than expected, fill the array
-        while (idx >= request.getSongs().size())
-        {
-            Song song = new Song(request.getUrl());
-            song.setNumber(trackNumber);
-            trackNumber++;
-            request.addSong(song);
-        }
-        return request.getSongs().get(idx);
-    }
-
     private void download(DownloadTask task)
     {
-        Set<Format> uniqueFormats = new HashSet<>();
+        Song song = task.request.getSong();
-        for (Song song : task.request.getSongs())
+        chooseFormats(song);
-        {
-            uniqueFormats.addAll(song.getFormats());
-        }
-
-        List<Format> sortedFormats = sortFormats(uniqueFormats);
         String formatCodes = "";
-        final List<Format> formats = sortedFormats;
+        final List<Format> formats = song.getFormats();
-        for (int i = 0; i < 5 && i < sortedFormats.size(); i++)
+        for (int i = 0; i < 3 && i < song.getFormats().size(); i++)
             formatCodes += formats.get(i).getCode() + "/";
 
-        int downloadIdx = 0;
-
         try
         {
             messageHandler.accept(task.request, null);
@@ -298,7 +263,7 @@ public class Downloader implements Consumer<DownloadTask>
                     + " --no-playlist"
                     + " --extractor-args youtube:player_client=android"
                     + " -o " + getDownloadDir().getAbsolutePath() + "/%(title)s.%(ext)s "
-                    + task.request.getUrl().toString();
+                    + song.getUrl().toString();
 
             Process exec = runCommand(cmd, DOWNLOAD_TIMEOUT);
             InputStream in = exec.getInputStream();
@@ -309,47 +274,30 @@ public class Downloader implements Consumer<DownloadTask>
                 String line = sc.nextLine();
                 System.out.println(line);
 
-                Matcher itemMatcher = DOWNLOAD_ITEM_PATTERN.matcher(line);
-                if (itemMatcher.find())
-                {
-                    int idx = Integer.parseInt(itemMatcher.group(1)) - 1;
-                    int total = Integer.parseInt(cmd);
-
-                    downloadIdx = idx;
-                }
-
                 Matcher progMatcher = PROGRESS_PATTERN.matcher(line);
                 if (progMatcher.find())
                 {
-                    getSongFromRequest(task.request, downloadIdx).setProgress(Double.parseDouble(progMatcher.group(1)));
+                    task.request.setProgress(Double.parseDouble(progMatcher.group(1)));
                     messageHandler.accept(task.request, null);
                 }
 
                 Matcher destMatcher = DESTINATION_PATTERN.matcher(line);
                 if (destMatcher.find())
-                {
-                    Song song = getSongFromRequest(task.request, downloadIdx);
-
                     song.setLocation(new File(destMatcher.group(1)));
-
-                    // this is currently our criteria for completion; submit the song and move on
-                    if (task.getDestination() != null)
-                        task.getDestination().accept(song);
-
-                    downloadIdx++;
-                }
             }
 
-            //            String output = new String(in.readAllBytes(), Charset.defaultCharset());
+//            String output = new String(in.readAllBytes(), Charset.defaultCharset());
             String error = new String(exec.getErrorStream().readAllBytes(), Charset.defaultCharset());
-            //            System.out.println(output);
+//            System.out.println(output);
 
             if (exec.exitValue() != 0)
                 throw new RuntimeException("youtube-dl failed with error " + exec.exitValue() + ", output:\n" + error);
 
-//            task.request.setProgress(100);
+            task.request.setProgress(100);
-            //            return true;
+//            return true;
 
+            if (task.getDestination() != null)
+                task.getDestination().accept(song);
             downloadQueue.remove(task);
             messageHandler.accept(task.request, null);
         } catch (Exception ex)
@@ -366,20 +314,12 @@ public class Downloader implements Consumer<DownloadTask>
         System.out.println("Running command: " + cmd);
         //		Process exec = Runtime.getRuntime().exec().split(" "));
         Process exec = new ProcessBuilder(cmd.split(" ")).redirectOutput(ProcessBuilder.Redirect.PIPE).redirectError(ProcessBuilder.Redirect.PIPE).start();
-        scheduler.schedule(() ->
+        boolean done = exec.waitFor(timeoutSecs, TimeUnit.SECONDS);
-        {
+        if (!done)
-            if (exec.isAlive())
         {
             exec.destroyForcibly();
-                System.err.println("Process " + cmd + " took too long, killing process.");
+            throw new RuntimeException("Took too long, giving up.");
         }
-        }, timeoutSecs, TimeUnit.SECONDS);
-//        boolean done = exec.waitFor(timeoutSecs, TimeUnit.SECONDS);
-//        if (!done)
-//        {
-//            exec.destroyForcibly();
-//            throw new RuntimeException("Took too long, giving up.");
-//        }
         return exec;
     }
 

src/main/java/moe/nekojimi/chords/Format.java

@@ -7,7 +7,8 @@ package moe.nekojimi.chords;
 
 import com.amihaiemil.eoyaml.Yaml;
 import com.amihaiemil.eoyaml.YamlMapping;
-import java.util.Objects;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 import javax.json.JsonObject;
 
 /**
@@ -144,42 +145,4 @@ class Format
         return "Format{" + "code=" + code + ", extension=" + extension + ", resolution=" + resolution + ", note=" + note + '}';
     }
 
-    @Override
-    public int hashCode()
-    {
-        int hash = 7;
-        hash = 97 * hash + Objects.hashCode(this.extension);
-        hash = 97 * hash + Objects.hashCode(this.resolution);
-        hash = 97 * hash + (int) (this.size ^ (this.size >>> 32));
-        hash = 97 * hash + this.samplerate;
-        hash = 97 * hash + (this.audioOnly ? 1 : 0);
-        return hash;
-    }
-
-    @Override
-    public boolean equals(Object obj)
-    {
-        if (this == obj)
-            return true;
-        if (obj == null)
-            return false;
-        if (getClass() != obj.getClass())
-            return false;
-        final Format other = (Format) obj;
-        if (this.size != other.size)
-            return false;
-        if (this.samplerate != other.samplerate)
-            return false;
-        if (this.audioOnly != other.audioOnly)
-            return false;
-        if (!Objects.equals(this.code, other.code))
-            return false;
-        if (!Objects.equals(this.extension, other.extension))
-            return false;
-        if (!Objects.equals(this.resolution, other.resolution))
-            return false;
-        return true;
-    }
-
-
 }

src/main/java/moe/nekojimi/chords/MusicHandler.java

@@ -7,13 +7,12 @@ package moe.nekojimi.chords;
 
 import java.io.*;
 import java.nio.ByteBuffer;
-import java.util.ArrayList;
-import java.util.List;
 import java.util.function.Consumer;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 import javax.sound.sampled.*;
 import net.dv8tion.jda.api.audio.AudioSendHandler;
+import org.apache.commons.io.input.buffer.CircularByteBuffer;
 
 /**
  *
@@ -38,8 +37,7 @@ public class MusicHandler implements AudioSendHandler, Closeable
     }
 
     private Song currentSong;
-//    private TrackPlayer player;
+    private TrackPlayer player;
-    private final List<TrackPlayer> playingTracks = new ArrayList<>();
 
     private File debugOutFile;
     private BufferedOutputStream debugOut;
@@ -69,11 +67,12 @@ public class MusicHandler implements AudioSendHandler, Closeable
         nextSong(true);
     }
 
-    public void playOver(Song song)
+//    public boolean restartSong()
-    {
+//    {
-
+////        songQueue.addFirst(currentSong);
-    }
+//        currentSong = null;
-
+//        return nextSong(true);
+//    }
 
     private boolean nextSong()
     {
@@ -85,7 +84,8 @@ public class MusicHandler implements AudioSendHandler, Closeable
         if (immediate)
         {
             System.out.println("Immediate next - clearing buffer");
-            playingTracks.clear();
+            player = null;
+//            audioBuffer.clear();
         }
 
         try
@@ -108,8 +108,7 @@ public class MusicHandler implements AudioSendHandler, Closeable
             System.out.println("Playing song " + currentSong.getLocation().getAbsolutePath());
             arrayErr = false;
             byteCount = 3840;
-            TrackPlayer player = new TrackPlayer(currentSong);
+            player = new TrackPlayer(currentSong);
-            playingTracks.add(player);
 //            System.out.println("Queue filled to " + audioBuffer.getCurrentNumberOfBytes());
             return true;
         } catch (UnsupportedAudioFileException | IOException ex)
@@ -123,7 +122,7 @@ public class MusicHandler implements AudioSendHandler, Closeable
 
     public boolean isPlaying()
     {
-        return !playingTracks.isEmpty();
+        return player != null;
     }
 
     public boolean isShouldPlay()
@@ -141,12 +140,7 @@ public class MusicHandler implements AudioSendHandler, Closeable
     @Override
     public boolean canProvide()
     {
-        if (playingTracks.isEmpty())
+        return player != null && player.has(1);
-            return false;
-        for (TrackPlayer player : playingTracks)
-            if (player.has(1))
-                return true;
-        return false;
         // If we have something in our buffer we can provide it to the send system
 //        return audioBuffer.getCurrentNumberOfBytes() > byteCount && shouldPlay;
     }
@@ -155,36 +149,28 @@ public class MusicHandler implements AudioSendHandler, Closeable
     public ByteBuffer provide20MsAudio()
     {
         ByteBuffer ret = ByteBuffer.allocate(byteCount);
-        while (ret.position() < byteCount && !playingTracks.isEmpty())
+        while (ret.position() < byteCount && player != null)
-        {
-            boolean outOfInput = true;
-            List<ByteBuffer> mixes = new ArrayList<>();
-            List<TrackPlayer> emptyPlayers = new ArrayList<>();
-            for (TrackPlayer player : playingTracks)
         {
+//            System.out.println("Position: " + ret.position() + " Remaining: " + ret.remaining());
             try
             {
                 ByteBuffer read = player.read(ret.remaining());
-                    if (ret.limit() + read.position() >= byteCount)
+                //            System.out.println("SAMPLES from player: " + Util.printSamples(read));
-                        outOfInput = false;
+//            System.out.println("Wanted: " + byteCount + " Space:" + space + " Available: " + din.available() + " To read: " + bytesToRead + " Read: " + read);
-                    mixes.add(read);
+
-                    //                ret.put(read);
+//                System.out.println("Read: " + read.remaining());
+                ret.put(read);
             } catch (TrackPlayer.OutOfInputException | IOException ex)
             {
-//                    System.out.println("Track player " + player + " stopped giving input: " + ex.getMessage());
+//                System.out.println("Track ended, starting next.");
-                    emptyPlayers.add(player);
-                    //                System.out.println("Track ended, starting next.");
-                    //                outOfInput = true;
-                }
-            }
-            playingTracks.removeAll(emptyPlayers);
-            ret.put(mixBuffers(mixes));
-            if (outOfInput)
-            {
                 boolean foundNext = nextSong();
+
                 if (!foundNext)
+                {
+//                    System.out.println("Out of tracks!");
                     break;
                 }
+            }
 
         }
 //        System.out.println("Buffer filled, submitting.");
@@ -194,6 +180,56 @@ public class MusicHandler implements AudioSendHandler, Closeable
 
     }
 
+//    private void fillBuffer(boolean canSkip)
+//    {
+//        // use what we have in our buffer to send audio as PCM
+//        while (audioBuffer.getCurrentNumberOfBytes() < DESIRED_BUFFER_SIZE)
+//            if (!readData())
+//                if (!canSkip || !nextSong())
+//                    break;
+//    }
+//
+//    private boolean readData()
+//    {
+//        if (din == null)
+//            return false;
+//        try
+//        {
+//            //				if (din.available() == 0)
+//            //					return false;
+//            int bytesToRead = DESIRED_BUFFER_SIZE - audioBuffer.getCurrentNumberOfBytes();
+//            int space = audioBuffer.getSpace();
+//            if (din.available() > 0 && din.available() < bytesToRead)
+//                bytesToRead = din.available();
+//            if (bytesToRead > space)
+//                bytesToRead = space;
+//            if (bytesToRead == 0)
+//                return false;
+//            byte[] bytes = new byte[bytesToRead];
+//            //				byte[] bytes = din.readNBytes(bytesToRead);
+//            int read = din.read(bytes);
+////            System.out.println("Wanted: " + byteCount + " Space:" + space + " Available: " + din.available() + " To read: " + bytesToRead + " Read: " + read);
+//            if (read < 0)
+//                return false;
+////            queue.add(bytes);
+//
+//            audioBuffer.add(bytes, 0, read);
+//        } catch (IOException ex)
+//        {
+//            Logger.getLogger(Chords.class.getName()).log(Level.SEVERE, null, ex);
+//            return false;
+//        } catch (ArrayIndexOutOfBoundsException ex)
+//        {
+//            if (!arrayErr)
+//                arrayErr = true;
+//            else
+//            {
+//                Logger.getLogger(Chords.class.getName()).log(Level.SEVERE, null, ex);
+//                return false;
+//            }
+//        }
+//        return true;
+//    }
     public Song getCurrentSong()
     {
         return currentSong;
@@ -210,38 +246,4 @@ public class MusicHandler implements AudioSendHandler, Closeable
     {
     }
 
-    private ByteBuffer mixBuffers(List<ByteBuffer> mixes)
-    {
-//        System.out.println("Mixing " + mixes.size() + " buffers");
-        if (mixes.size() == 1)
-            return mixes.get(0);
-
-        int maxSize = 0;
-        for (ByteBuffer buf : mixes)
-        {
-            if (buf.limit() > maxSize)
-                maxSize = buf.position();
-        }
-        ByteBuffer ret = ByteBuffer.allocate(maxSize);
-
-        for (int i = 0; i < ret.limit(); i++)
-        {
-            int byteTotal = 0;
-            int mixCount = 0;
-            for (ByteBuffer buf : mixes)
-            {
-                if (i < buf.limit())
-                {
-                    byteTotal += buf.get(i);
-                    mixCount++;
-                }
-            }
-            double avg = ((double) byteTotal) / mixCount;
-            byte byteVal = (byte) Math.round(avg);
-            ret.put(byteVal);
-        }
-        ret.rewind();
-        return ret;
-    }
-
 }

src/main/java/moe/nekojimi/chords/QueueManager.java

@@ -16,9 +16,7 @@
  */
 package moe.nekojimi.chords;
 
-import java.util.Comparator;
 import java.util.LinkedList;
-import java.util.PriorityQueue;
 import java.util.Queue;
 import java.util.function.Consumer;
 
@@ -30,13 +28,13 @@ public class QueueManager implements Consumer<Song>
 {
 
     private Song restartingSong = null;
-    private final PriorityQueue<Song> jukeboxQueue = new PriorityQueue<>();
+    private final Queue<Song> jukeboxQueue;
     private Playlist playlist;
     private MusicHandler handler;
 
     public QueueManager()
     {
-//        jukeboxQueue = new LinkedList<>();
+        jukeboxQueue = new LinkedList<>();
     }
 
     @Override

src/main/java/moe/nekojimi/chords/Song.java

@@ -19,7 +19,7 @@ import java.util.List;
  *
  * @author jimj316
  */
-public class Song implements Comparable<Song>
+public class Song
 {
     private String title;
     private String artist;
@@ -28,11 +28,10 @@ public class Song implements Comparable<Song>
     private int number;
     private List<Format> formats = new ArrayList<>();
 
+    private String requestedBy;
+    private String requestedIn;
     private boolean kept = false;
 
-    private double progress = -1;
-    private double eta = -1;
-
     public Song(URL url)
     {
         this.url = url;
@@ -51,8 +50,8 @@ public class Song implements Comparable<Song>
                 .add("location", location.getAbsolutePath())
                 .add("num", Integer.toString(number))
                 .add("formats", build.build())
-                //                .add("requestedBy", requestedBy)
+                .add("requestedBy", requestedBy)
-                //                .add("requestedIn", requestedIn)
+                .add("requestedIn", requestedIn)
                 .add("kept", Boolean.toString(kept))
                 .build();
     }
@@ -65,8 +64,8 @@ public class Song implements Comparable<Song>
         song.setLocation(new File(map.string("location")));
         song.setNumber(map.integer("num"));
         song.setKept(Boolean.parseBoolean(map.string("kept")));
-//        song.setRequestedBy(map.string("requestedBy"));
+        song.setRequestedBy(map.string("requestedBy"));
-//        song.setRequestedIn(map.string("requestedIn"));
+        song.setRequestedIn(map.string("requestedIn"));
 
         List<Format> formats = new ArrayList<>();
         YamlSequence formatSeq = map.yamlSequence("formats");
@@ -134,6 +133,26 @@ public class Song implements Comparable<Song>
         location = null;
     }
 
+    public String getRequestedBy()
+    {
+        return requestedBy;
+    }
+
+    public void setRequestedBy(String requestedBy)
+    {
+        this.requestedBy = requestedBy;
+    }
+
+    public String getRequestedIn()
+    {
+        return requestedIn;
+    }
+
+    public void setRequestedIn(String requestedIn)
+    {
+        this.requestedIn = requestedIn;
+    }
+
     public boolean isKept()
     {
         return kept;
@@ -178,30 +197,4 @@ public class Song implements Comparable<Song>
         return formats.get(0);
     }
 
-    public double getProgress()
-    {
-        return progress;
-    }
-
-    public void setProgress(double progress)
-    {
-        this.progress = progress;
-    }
-
-    public double getEta()
-    {
-        return eta;
-    }
-
-    public void setEta(double eta)
-    {
-        this.eta = eta;
-    }
-
-    @Override
-    public int compareTo(Song o)
-    {
-        return Integer.compare(number, o.number);
-    }
-
 }

src/main/java/moe/nekojimi/chords/SongRequest.java

@@ -17,7 +17,6 @@
 package moe.nekojimi.chords;
 
 import java.net.URL;
-import java.util.ArrayList;
 import java.util.List;
 import moe.nekojimi.chords.commands.Invocation;
 import moe.nekojimi.musicsearcher.Result;
@@ -37,10 +36,10 @@ public class SongRequest
 
     private Result result;
 
-    private final List<Song> songs = new ArrayList<>();
+    private Song song;
 
-    private String requestedBy;
+    private double progress = -1;
-    private String requestedIn;
+    private double eta = -1;
 
 
     public List<Result> getSearchResults()
@@ -71,8 +70,6 @@ public class SongRequest
     public void setInvocation(Invocation invocation)
     {
         this.invocation = invocation;
-        requestedBy = invocation.getRequestMessage().getAuthor().getName();
-        requestedIn = invocation.getRequestMessage().getChannel().getId();
     }
 
 //    public Message getRequestMessage()
@@ -115,29 +112,34 @@ public class SongRequest
         this.url = url;
     }
 
-    public List<Song> getSongs()
+    public Song getSong()
     {
-        return songs;
+        return song;
     }
 
-    public void addSong(Song song)
+    public void setSong(Song song)
     {
-        songs.add(song);
+        this.song = song;
     }
 
-    public void clearSongs()
+    public double getProgress()
     {
-        songs.clear();
+        return progress;
     }
 
-    public String getRequestedBy()
+    public void setProgress(double progress)
     {
-        return requestedBy;
+        this.progress = progress;
     }
 
-    public String getRequestedIn()
+    public double getEta()
     {
-        return requestedIn;
+        return eta;
+    }
+
+    public void setEta(double eta)
+    {
+        this.eta = eta;
     }
 
 }

src/main/java/moe/nekojimi/chords/commands/Command.java

@@ -16,6 +16,7 @@ public abstract class Command
 
     protected final Chords bot;
     protected final String keyword;
+    protected String documentation;
 
     public Command(Chords bot, String keyword)
     {
@@ -30,8 +31,9 @@ public abstract class Command
         return keyword;
     }
 
-//    public abstract String synopsis();
+    public String getDocumentation()
-//
+    {
-//    public abstract String help();
+        return documentation;
+    }
 
 }

src/main/java/moe/nekojimi/chords/commands/Invocation.java

@@ -19,6 +19,7 @@ package moe.nekojimi.chords.commands;
 import java.util.List;
 import net.dv8tion.jda.api.entities.Message;
 import net.dv8tion.jda.api.events.message.MessageReceivedEvent;
+import net.dv8tion.jda.api.requests.restaction.MessageCreateAction;
 
 /**
  *