using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Runtime.Versioning;
using System.Security;
using System.Security.Permissions;
using BepInEx;
using BepInEx.Configuration;
using BepInEx.Logging;
using HarmonyLib;
using NLayer;
using NVorbis;
using SideLoader;
using SideLoader.SLPacks.Categories;
using UnityEngine;
using UnityEngine.Networking;

[assembly: CompilationRelaxations(8)]
[assembly: RuntimeCompatibility(WrapNonExceptionThrows = true)]
[assembly: Debuggable(DebuggableAttribute.DebuggingModes.IgnoreSymbolStoreSequencePoints)]
[assembly: AssemblyTitle("AudioFormats")]
[assembly: AssemblyDescription("Adds .ogg and .mp3 support to SideLoader's audio loading.")]
[assembly: AssemblyConfiguration("")]
[assembly: AssemblyCompany("")]
[assembly: AssemblyProduct("AudioFormats")]
[assembly: AssemblyCopyright("Copyright ©  2026")]
[assembly: AssemblyTrademark("")]
[assembly: ComVisible(false)]
[assembly: Guid("c4688ed5-9644-4f6d-a9b6-1cce1f1d9015")]
[assembly: AssemblyFileVersion("1.0.0.0")]
[assembly: TargetFramework(".NETFramework,Version=v4.8.1", FrameworkDisplayName = ".NET Framework 4.8.1")]
[assembly: SecurityPermission(SecurityAction.RequestMinimum, SkipVerification = true)]
[assembly: AssemblyVersion("1.0.0.0")]
[module: UnverifiableCode]
namespace Tchernobill.AudioFormats
{
	public static class AudioFormatsConfig
	{
		public static ConfigEntry<bool> PreferManagedDecoders;

		public static ConfigEntry<AudioLoadMode> LoadMode;

		public static ConfigEntry<int> MaxConcurrentLoads;

		public static ConfigEntry<int> LazyLoadingThreshold;

		public static ConfigEntry<bool> VerboseLogging;

		public static void Bind(ConfigFile config)
		{
			//IL_005b: Unknown result type (might be due to invalid IL or missing references)
			//IL_0065: Expected O, but got Unknown
			//IL_008c: Unknown result type (might be due to invalid IL or missing references)
			//IL_0096: Expected O, but got Unknown
			PreferManagedDecoders = config.Bind<bool>("Decoding", "PreferManagedDecoders", false, "If active, .ogg and .mp3 files are always decoded by the bundled NVorbis / NLayer decoders instead of Unity's built-in one. Slower and uses more memory, but gives identical results on every machine. Leave this off unless a file that plays fine elsewhere is refused by the game.");
			LoadMode = config.Bind<AudioLoadMode>("Decoding", "LoadMode", AudioLoadMode.Decompress, "How a clip is held in memory once loaded. Decompress: expanded to raw PCM on load. Costs the most time and memory - a minute of 24 kHz mono is ~3 MB of PCM against ~300 KB of ogg - but has no catch. CompressedInMemory: measured to be ignored by this game's Unity version, which decompresses anyway. Behaves like Decompress. Streaming: decoded straight from the file while it plays, about five times faster to load. The file then stays open for as long as the game runs, and Unity only plays one instance of a streamed clip at a time.");
			MaxConcurrentLoads = config.Bind<int>("Decoding", "MaxConcurrentLoads", 256, new ConfigDescription("How many audio files may be loading at the same time. SideLoader asks for every file of a pack in one go, and a pack with thousands of clips would otherwise hold them all open at once. 0 removes the limit.", (AcceptableValueBase)(object)new AcceptableValueRange<int>(0, 4096), Array.Empty<object>()));
			LazyLoadingThreshold = config.Bind<int>("Decoding", "LazyLoadingThreshold", 100, new ConfigDescription("A pack holding at least this many .ogg/.mp3 files is only indexed at startup, and each of its clips is decoded the first time something plays it. A voice pack holds hours of audio of which a session plays minutes, so loading all of it up front costs the loading time, and the memory, of everything the player never hears. 0 always loads everything up front. Only applies to packs whose files sit in a folder, never to a .zip pack.", (AcceptableValueBase)(object)new AcceptableValueRange<int>(0, 100000), Array.Empty<object>()));
			VerboseLogging = config.Bind<bool>("Debug", "VerboseLogging", false, "If active, log the sample rate, channel count and decoder used for each loaded clip, on top of the timing summary written after each pack is loaded.");
		}
	}
	[BepInPlugin("Tchernobill.AudioFormats", "Audio Formats", "1.1.1")]
	[BepInDependency(/*Could not decode attribute arguments.*/)]
	public class AudioFormatsPlugin : BaseUnityPlugin
	{
		public const string GUID = "Tchernobill.AudioFormats";

		public const string NAME = "Audio Formats";

		public const string VERSION = "1.1.1";

		public static AudioFormatsPlugin Instance { get; private set; }

		private void Awake()
		{
			//IL_0037: Unknown result type (might be due to invalid IL or missing references)
			Instance = this;
			Log.Init(((BaseUnityPlugin)this).Logger);
			AudioFormatsConfig.Bind(((BaseUnityPlugin)this).Config);
			AppDomain.CurrentDomain.AssemblyResolve += ResolveBundledDecoder;
			new Harmony("Tchernobill.AudioFormats").PatchAll();
		}

		private static Assembly ResolveBundledDecoder(object sender, ResolveEventArgs args)
		{
			string name = new AssemblyName(args.Name).Name;
			if (name != "NVorbis" && name != "NLayer")
			{
				return null;
			}
			try
			{
				string directoryName = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
				string text = Path.Combine(directoryName, name + ".dll");
				if (!File.Exists(text))
				{
					Log.Warning("'" + name + ".dll' is missing from '" + directoryName + "'. Reinstall AudioFormats to get the fallback decoders back.");
					return null;
				}
				return Assembly.LoadFrom(text);
			}
			catch (Exception ex)
			{
				Log.Warning("Could not load '" + name + ".dll': " + ex.Message);
				return null;
			}
		}
	}
	public static class AudioClipLoader
	{
		public static void LoadFromFile(string filePath, SLPack pack = null, Action<AudioClip> onClipLoaded = null)
		{
			if (!File.Exists(filePath))
			{
				Log.Warning("No such audio file: '" + filePath + "'.");
				return;
			}
			AudioFileFormat format = AudioFileFormats.FromExtension(filePath);
			if (!AudioFileFormats.IsAdded(format))
			{
				Log.Warning("'" + Path.GetFileName(filePath) + "' is not an .ogg or .mp3 file.");
				return;
			}
			string clipName = Path.GetFileNameWithoutExtension(filePath);
			if (AudioFormatsConfig.PreferManagedDecoders.Value)
			{
				Complete(DecodeManaged(filePath, format, clipName), clipName, filePath, pack, onClipLoaded, usedManagedDecoder: true, FileLength(filePath));
				return;
			}
			if (!Object.op_Implicit((Object)(object)AudioFormatsPlugin.Instance))
			{
				Complete(DecodeManaged(filePath, format, clipName), clipName, filePath, pack, onClipLoaded, usedManagedDecoder: true, FileLength(filePath));
				return;
			}
			AudioLoadQueue.Enqueue(() => LoadWithFallbackCoroutine(filePath, format, clipName, pack, onClipLoaded));
		}

		public static AudioClip LoadFromBytes(byte[] data, string clipName, SLPack pack = null)
		{
			AudioFileFormat format = AudioFileFormats.FromHeader(data);
			if (!AudioFileFormats.IsAdded(format))
			{
				Log.Warning("'" + clipName + "' is not ogg or mp3 data.");
				return null;
			}
			long timestamp = Stopwatch.GetTimestamp();
			AudioClip val = ManagedAudioDecoder.Decode(data, format, clipName);
			LoadStats.AddManagedDecode(Stopwatch.GetTimestamp() - timestamp);
			if (!Object.op_Implicit((Object)(object)val))
			{
				return null;
			}
			return FinalizeTimed(val, clipName, pack);
		}

		private static IEnumerator LoadWithFallbackCoroutine(string filePath, AudioFileFormat format, string clipName, SLPack pack, Action<AudioClip> onClipLoaded)
		{
			AudioClip clip = null;
			string failure = null;
			long bytes = 0L;
			yield return UnityAudioDecoder.LoadCoroutine(filePath, format, clipName, delegate(AudioClip result)
			{
				clip = result;
			}, delegate(string error)
			{
				failure = error;
			}, delegate(long read)
			{
				bytes = read;
			});
			bool usedManagedDecoder = false;
			if (!Object.op_Implicit((Object)(object)clip))
			{
				Log.Message("Unity could not decode '" + Path.GetFileName(filePath) + "' (" + failure + "), retrying with the managed decoder.");
				clip = DecodeManaged(filePath, format, clipName);
				usedManagedDecoder = true;
				bytes = FileLength(filePath);
			}
			Complete(clip, clipName, filePath, pack, onClipLoaded, usedManagedDecoder, bytes);
		}

		private static AudioClip DecodeManaged(string filePath, AudioFileFormat format, string clipName)
		{
			long timestamp = Stopwatch.GetTimestamp();
			AudioClip result = ManagedAudioDecoder.DecodeFile(filePath, format, clipName);
			LoadStats.AddManagedDecode(Stopwatch.GetTimestamp() - timestamp);
			return result;
		}

		private static long FileLength(string filePath)
		{
			try
			{
				return new FileInfo(filePath).Length;
			}
			catch
			{
				return 0L;
			}
		}

		private static void Complete(AudioClip clip, string clipName, string filePath, SLPack pack, Action<AudioClip> onClipLoaded, bool usedManagedDecoder, long fileBytes)
		{
			LoadStats.CountResult(clip, usedManagedDecoder, fileBytes);
			if (!Object.op_Implicit((Object)(object)clip))
			{
				Log.Warning("Could not load audio clip '" + Path.GetFileName(filePath) + "'.");
				return;
			}
			FinalizeTimed(clip, clipName, pack);
			Log.Debug("Loaded audio clip: " + Path.GetFileName(filePath));
			onClipLoaded?.Invoke(clip);
		}

		private static AudioClip FinalizeTimed(AudioClip clip, string clipName, SLPack pack)
		{
			long timestamp = Stopwatch.GetTimestamp();
			AudioClip result = SideLoaderBridge.FinalizeAudioClip(clip, clipName, pack);
			LoadStats.AddFinalize(Stopwatch.GetTimestamp() - timestamp);
			return result;
		}
	}
	public enum AudioFileFormat
	{
		Unknown,
		Wav,
		Ogg,
		Mp3
	}
	public static class AudioFileFormats
	{
		public static readonly string[] AddedExtensions = new string[2] { ".ogg", ".mp3" };

		public static bool IsAdded(AudioFileFormat format)
		{
			if (format != AudioFileFormat.Ogg)
			{
				return format == AudioFileFormat.Mp3;
			}
			return true;
		}

		public static AudioFileFormat FromExtension(string filePath)
		{
			if (string.IsNullOrEmpty(filePath))
			{
				return AudioFileFormat.Unknown;
			}
			string extension = Path.GetExtension(filePath);
			if (string.Equals(extension, ".ogg", StringComparison.OrdinalIgnoreCase))
			{
				return AudioFileFormat.Ogg;
			}
			if (string.Equals(extension, ".mp3", StringComparison.OrdinalIgnoreCase))
			{
				return AudioFileFormat.Mp3;
			}
			if (string.Equals(extension, ".wav", StringComparison.OrdinalIgnoreCase))
			{
				return AudioFileFormat.Wav;
			}
			return AudioFileFormat.Unknown;
		}

		public static AudioFileFormat FromHeader(byte[] data)
		{
			if (data == null || data.Length < 4)
			{
				return AudioFileFormat.Unknown;
			}
			if (data[0] == 79 && data[1] == 103 && data[2] == 103 && data[3] == 83)
			{
				return AudioFileFormat.Ogg;
			}
			if (data[0] == 82 && data[1] == 73 && data[2] == 70 && data[3] == 70)
			{
				return AudioFileFormat.Wav;
			}
			if (data[0] == 73 && data[1] == 68 && data[2] == 51)
			{
				return AudioFileFormat.Mp3;
			}
			if (data[0] == byte.MaxValue && (data[1] & 0xE0) == 224)
			{
				return AudioFileFormat.Mp3;
			}
			return AudioFileFormat.Unknown;
		}

		public static AudioType ToUnityAudioType(AudioFileFormat format)
		{
			return (AudioType)(format switch
			{
				AudioFileFormat.Ogg => 14, 
				AudioFileFormat.Mp3 => 13, 
				AudioFileFormat.Wav => 20, 
				_ => 0, 
			});
		}
	}
	public enum AudioLoadMode
	{
		Decompress,
		CompressedInMemory,
		Streaming
	}
	internal static class AudioLoadQueue
	{
		private static readonly Queue<Func<IEnumerator>> s_pending = new Queue<Func<IEnumerator>>();

		private static int s_active;

		private static bool s_pumping;

		public static void Enqueue(Func<IEnumerator> job)
		{
			if (job == null)
			{
				return;
			}
			LoadStats.BeginBatch();
			s_pending.Enqueue(job);
			LoadStats.CountRequest();
			if (!s_pumping)
			{
				AudioFormatsPlugin instance = AudioFormatsPlugin.Instance;
				if (!Object.op_Implicit((Object)(object)instance))
				{
					Log.Warning("The AudioFormats plugin object is gone, queued audio loads are dropped.");
					s_pending.Clear();
					LoadStats.EndBatch();
				}
				else
				{
					s_pumping = true;
					((MonoBehaviour)instance).StartCoroutine(Pump());
				}
			}
		}

		private static IEnumerator Pump()
		{
			AudioFormatsPlugin host = AudioFormatsPlugin.Instance;
			while (s_pending.Count > 0 || s_active > 0)
			{
				int value = AudioFormatsConfig.MaxConcurrentLoads.Value;
				while (s_pending.Count > 0 && (value <= 0 || s_active < value))
				{
					s_active++;
					((MonoBehaviour)host).StartCoroutine(Run(s_pending.Dequeue()));
				}
				yield return null;
			}
			s_pumping = false;
			LoadStats.EndBatch();
		}

		private static IEnumerator Run(Func<IEnumerator> job)
		{
			IEnumerator routine = null;
			try
			{
				routine = job();
			}
			catch (Exception ex)
			{
				Log.Warning("Could not start an audio load: " + ex.Message);
			}
			while (routine != null)
			{
				bool flag;
				try
				{
					flag = routine.MoveNext();
				}
				catch (Exception ex2)
				{
					Log.Warning("Audio load failed: " + ex2.Message);
					break;
				}
				if (!flag)
				{
					break;
				}
				yield return routine.Current;
			}
			s_active--;
		}
	}
	public static class LazyAudioClips
	{
		private class Entry
		{
			public string Path;

			public SLPack Pack;

			public AudioClip Clip;

			public bool Loading;
		}

		private static readonly Dictionary<string, Entry> s_index = new Dictionary<string, Entry>();

		public static int Count => s_index.Count;

		internal static void Index(SLPack pack, string filePath)
		{
			s_index[Path.GetFileNameWithoutExtension(filePath)] = new Entry
			{
				Path = filePath,
				Pack = pack
			};
		}

		public static bool Contains(string clipName)
		{
			if (!string.IsNullOrEmpty(clipName))
			{
				return s_index.ContainsKey(clipName);
			}
			return false;
		}

		public static void Prefetch(string clipName)
		{
			if (!string.IsNullOrEmpty(clipName) && s_index.TryGetValue(clipName, out var entry) && !Object.op_Implicit((Object)(object)entry.Clip) && !entry.Loading)
			{
				entry.Loading = true;
				AudioClipLoader.LoadFromFile(entry.Path, entry.Pack, delegate(AudioClip clip)
				{
					entry.Clip = clip;
					entry.Loading = false;
				});
			}
		}

		public static AudioClip GetLoaded(string clipName)
		{
			if (string.IsNullOrEmpty(clipName) || !s_index.TryGetValue(clipName, out var value))
			{
				return null;
			}
			return value.Clip;
		}

		public static AudioClip GetNow(string clipName)
		{
			if (string.IsNullOrEmpty(clipName) || !s_index.TryGetValue(clipName, out var value))
			{
				return null;
			}
			if (Object.op_Implicit((Object)(object)value.Clip))
			{
				return value.Clip;
			}
			AudioFileFormat format = AudioFileFormats.FromExtension(value.Path);
			AudioClip val = ManagedAudioDecoder.DecodeFile(value.Path, format, clipName);
			if (!Object.op_Implicit((Object)(object)val))
			{
				return null;
			}
			value.Clip = SideLoaderBridge.FinalizeAudioClip(val, clipName, value.Pack);
			value.Loading = false;
			return value.Clip;
		}
	}
	internal static class LoadStats
	{
		private const int ReportThreshold = 25;

		private static readonly Stopwatch s_wallClock = new Stopwatch();

		private static long s_unityDecodeTicks;

		private static long s_managedDecodeTicks;

		private static long s_finalizeTicks;

		private static long s_overheadTicks;

		private static int s_requested;

		private static int s_unityDecoded;

		private static int s_managedDecoded;

		private static int s_failed;

		private static long s_bytes;

		private static double s_seconds;

		private static int s_startFrame;

		public static bool Running => s_wallClock.IsRunning;

		public static void BeginBatch()
		{
			if (!s_wallClock.IsRunning)
			{
				s_unityDecodeTicks = (s_managedDecodeTicks = (s_finalizeTicks = (s_overheadTicks = 0L)));
				s_requested = (s_unityDecoded = (s_managedDecoded = (s_failed = 0)));
				UnityAudioDecoder.ResetFirstClipReport();
				s_bytes = 0L;
				s_seconds = 0.0;
				s_startFrame = Time.frameCount;
				s_wallClock.Reset();
				s_wallClock.Start();
			}
		}

		public static void CountRequest()
		{
			s_requested++;
		}

		public static void AddUnityDecode(long ticks)
		{
			s_unityDecodeTicks += ticks;
		}

		public static void AddManagedDecode(long ticks)
		{
			s_managedDecodeTicks += ticks;
		}

		public static void AddFinalize(long ticks)
		{
			s_finalizeTicks += ticks;
		}

		public static void AddOverhead(long ticks)
		{
			s_overheadTicks += ticks;
		}

		public static void CountResult(AudioClip clip, bool usedManagedDecoder, long fileBytes)
		{
			if (!Object.op_Implicit((Object)(object)clip))
			{
				s_failed++;
				return;
			}
			if (usedManagedDecoder)
			{
				s_managedDecoded++;
			}
			else
			{
				s_unityDecoded++;
			}
			s_bytes += fileBytes;
			if (clip.frequency > 0)
			{
				s_seconds += (double)clip.samples / (double)clip.frequency;
			}
		}

		public static void EndBatch()
		{
			if (s_wallClock.IsRunning)
			{
				s_wallClock.Stop();
				if (s_requested >= 25)
				{
					double num = 1000.0 / (double)Stopwatch.Frequency;
					Log.Message($"Loaded {s_unityDecoded + s_managedDecoded}/{s_requested} audio clips in " + $"{s_wallClock.ElapsedMilliseconds} ms ({Time.frameCount - s_startFrame} frames): " + $"{(double)s_bytes / 1048576.0:0.#} MB of files, {s_seconds / 60.0:0.#} min of audio, " + $"{s_failed} failed.");
					Log.Message($"  main thread: {(double)s_unityDecodeTicks * num:0} ms in Unity's decoder ({s_unityDecoded} clips), " + $"{(double)s_managedDecodeTicks * num:0} ms in the managed decoder ({s_managedDecoded} clips), " + $"{(double)s_finalizeTicks * num:0} ms registering them in SideLoader (that one includes " + "every other mod hooked on FinalizeAudioClip), " + $"{(double)s_overheadTicks * num:0} ms of request setup and disposal.");
				}
			}
		}
	}
	public static class ManagedAudioDecoder
	{
		private const int ReadChunkFloats = 16384;

		private static bool? s_oggAvailable;

		private static bool? s_mp3Available;

		public static bool OggAvailable => (s_oggAvailable ?? (s_oggAvailable = Type.GetType("NVorbis.VorbisReader, NVorbis") != null)).Value;

		public static bool Mp3Available => (s_mp3Available ?? (s_mp3Available = Type.GetType("NLayer.MpegFile, NLayer") != null)).Value;

		public static bool IsAvailable(AudioFileFormat format)
		{
			return format switch
			{
				AudioFileFormat.Ogg => OggAvailable, 
				AudioFileFormat.Mp3 => Mp3Available, 
				_ => false, 
			};
		}

		public static AudioClip DecodeFile(string filePath, AudioFileFormat format, string clipName)
		{
			try
			{
				using FileStream stream = File.OpenRead(filePath);
				return Decode(stream, format, clipName);
			}
			catch (Exception ex)
			{
				Log.Warning("Managed decoding of '" + filePath + "' failed: " + ex.Message);
				return null;
			}
		}

		public static AudioClip Decode(byte[] data, AudioFileFormat format, string clipName)
		{
			try
			{
				using MemoryStream stream = new MemoryStream(data, writable: false);
				return Decode(stream, format, clipName);
			}
			catch (Exception ex)
			{
				Log.Warning("Managed decoding of '" + clipName + "' failed: " + ex.Message);
				return null;
			}
		}

		public static AudioClip Decode(Stream stream, AudioFileFormat format, string clipName)
		{
			if (!IsAvailable(format))
			{
				Log.Warning("Cannot decode '" + clipName + "': the " + ((format == AudioFileFormat.Ogg) ? "NVorbis" : "NLayer") + ".dll shipped with AudioFormats was not found next to the plugin.");
				return null;
			}
			try
			{
				switch (format)
				{
				case AudioFileFormat.Ogg:
					return DecodeOgg(stream, clipName);
				case AudioFileFormat.Mp3:
					return DecodeMp3(stream, clipName);
				default:
					Log.Warning($"Cannot decode '{clipName}': unsupported format '{format}'.");
					return null;
				}
			}
			catch (Exception ex)
			{
				Log.Warning("Managed decoding of '" + clipName + "' failed: " + ex.Message);
				return null;
			}
		}

		[MethodImpl(MethodImplOptions.NoInlining)]
		private static AudioClip DecodeOgg(Stream stream, string clipName)
		{
			//IL_0002: Unknown result type (might be due to invalid IL or missing references)
			//IL_0008: Expected O, but got Unknown
			VorbisReader val = new VorbisReader(stream, false);
			try
			{
				long num = val.TotalSamples * val.Channels;
				bool flag = num > 0 && num < int.MaxValue;
				PcmBuffer pcmBuffer = new PcmBuffer((int)(flag ? num : 16384));
				float[] array = new float[16384];
				int num2;
				while ((num2 = val.ReadSamples(array, 0, array.Length)) > 0)
				{
					if (flag && pcmBuffer.Count + num2 > num)
					{
						num2 = (int)(num - pcmBuffer.Count);
					}
					if (num2 <= 0)
					{
						break;
					}
					pcmBuffer.Append(array, num2);
				}
				return BuildClip(clipName, pcmBuffer, val.Channels, val.SampleRate);
			}
			finally
			{
				((IDisposable)val)?.Dispose();
			}
		}

		[MethodImpl(MethodImplOptions.NoInlining)]
		private static AudioClip DecodeMp3(Stream stream, string clipName)
		{
			//IL_0001: Unknown result type (might be due to invalid IL or missing references)
			//IL_0007: Expected O, but got Unknown
			MpegFile val = new MpegFile(stream);
			try
			{
				PcmBuffer pcmBuffer = new PcmBuffer(16384);
				float[] array = new float[16384];
				int count;
				while ((count = val.ReadSamples(array, 0, array.Length)) > 0)
				{
					pcmBuffer.Append(array, count);
				}
				return BuildClip(clipName, pcmBuffer, val.Channels, val.SampleRate);
			}
			finally
			{
				((IDisposable)val)?.Dispose();
			}
		}

		private static AudioClip BuildClip(string clipName, PcmBuffer pcm, int channels, int sampleRate)
		{
			if (channels <= 0 || sampleRate <= 0)
			{
				Log.Warning($"Cannot build '{clipName}': invalid channels ({channels}) or sample rate ({sampleRate}).");
				return null;
			}
			float[] array = pcm.ToInterleavedArray(channels);
			int num = array.Length / channels;
			if (num <= 0)
			{
				Log.Warning("Cannot build '" + clipName + "': the file decoded to 0 sample.");
				return null;
			}
			AudioClip val = AudioClip.Create(clipName, num, channels, sampleRate, false);
			val.SetData(array, 0);
			Log.Debug($"Decoded '{clipName}' with the managed decoder: {num} samples, {channels} ch, {sampleRate} Hz.");
			return val;
		}
	}
	internal class PcmBuffer
	{
		private float[] m_data;

		private int m_count;

		public int Count => m_count;

		public PcmBuffer(int initialCapacity)
		{
			m_data = new float[Math.Max(initialCapacity, 4096)];
		}

		public void Append(float[] source, int count)
		{
			EnsureCapacity(m_count + count);
			Buffer.BlockCopy(source, 0, m_data, m_count * 4, count * 4);
			m_count += count;
		}

		public float[] ToInterleavedArray(int channels)
		{
			int num = m_count - m_count % channels;
			if (num == m_data.Length)
			{
				return m_data;
			}
			float[] array = new float[num];
			Buffer.BlockCopy(m_data, 0, array, 0, num * 4);
			return array;
		}

		private void EnsureCapacity(int required)
		{
			if (required > m_data.Length)
			{
				long num;
				for (num = m_data.Length; num < required; num *= 2)
				{
				}
				Array.Resize(ref m_data, (int)Math.Min(num, 2147483647L));
			}
		}
	}
	internal static class SideLoaderBridge
	{
		private static readonly MethodInfo s_finalizeAudioClip = AccessTools.Method(typeof(CustomAudio), "FinalizeAudioClip", new Type[3]
		{
			typeof(AudioClip),
			typeof(string),
			typeof(SLPack)
		}, (Type[])null);

		private static readonly MethodInfo s_packLoadAudioClip = AccessTools.Method(typeof(SLPack), "LoadAudioClip", new Type[3]
		{
			typeof(string),
			typeof(string),
			typeof(Action<AudioClip>)
		}, (Type[])null);

		public static AudioClip FinalizeAudioClip(AudioClip clip, string name, SLPack pack)
		{
			//IL_0037: Unknown result type (might be due to invalid IL or missing references)
			//IL_003d: Expected O, but got Unknown
			if (s_finalizeAudioClip == null)
			{
				Log.Warning("CustomAudio.FinalizeAudioClip was not found - is SideLoader up to date?");
				return clip;
			}
			try
			{
				return (AudioClip)s_finalizeAudioClip.Invoke(null, new object[3] { clip, name, pack });
			}
			catch (Exception ex)
			{
				Log.Warning("Could not finalize clip '" + name + "': " + (ex.InnerException?.Message ?? ex.Message));
				return clip;
			}
		}

		public static void PackLoadAudioClip(SLPack pack, string relativeDirectory, string file, Action<AudioClip> onClipLoaded)
		{
			if (s_packLoadAudioClip == null)
			{
				Log.Warning("SLPack.LoadAudioClip was not found - is SideLoader up to date?");
				return;
			}
			try
			{
				s_packLoadAudioClip.Invoke(pack, new object[3] { relativeDirectory, file, onClipLoaded });
			}
			catch (Exception ex)
			{
				Log.Warning("Could not load '" + file + "' from pack '" + ((pack != null) ? pack.Name : null) + "': " + (ex.InnerException?.Message ?? ex.Message));
			}
		}
	}
	internal static class UnityAudioDecoder
	{
		private static readonly List<UnityWebRequest> s_streamingRequests = new List<UnityWebRequest>();

		private static bool s_reportedFirstClip;

		public static void ResetFirstClipReport()
		{
			s_reportedFirstClip = false;
		}

		public static IEnumerator LoadCoroutine(string filePath, AudioFileFormat format, string clipName, Action<AudioClip> onSuccess, Action<string> onFailure, Action<long> onBytesRead = null)
		{
			string absoluteUri;
			try
			{
				absoluteUri = new Uri(Path.GetFullPath(filePath)).AbsoluteUri;
			}
			catch (Exception ex)
			{
				onFailure("could not build a file:// url (" + ex.Message + ")");
				yield break;
			}
			long timestamp = Stopwatch.GetTimestamp();
			UnityWebRequest request = UnityWebRequestMultimedia.GetAudioClip(absoluteUri, AudioFileFormats.ToUnityAudioType(format));
			AudioLoadMode mode = AudioFormatsConfig.LoadMode.Value;
			DownloadHandler downloadHandler = request.downloadHandler;
			DownloadHandlerAudioClip handler = (DownloadHandlerAudioClip)(object)((downloadHandler is DownloadHandlerAudioClip) ? downloadHandler : null);
			if (handler != null)
			{
				handler.compressed = mode == AudioLoadMode.CompressedInMemory;
				handler.streamAudio = mode == AudioLoadMode.Streaming;
			}
			LoadStats.AddOverhead(Stopwatch.GetTimestamp() - timestamp);
			try
			{
				yield return request.SendWebRequest();
				while (!request.isDone)
				{
					yield return null;
				}
				if (!string.IsNullOrEmpty(request.error))
				{
					onFailure(request.error);
					yield break;
				}
				AudioClip content;
				try
				{
					long timestamp2 = Stopwatch.GetTimestamp();
					content = DownloadHandlerAudioClip.GetContent(request);
					LoadStats.AddUnityDecode(Stopwatch.GetTimestamp() - timestamp2);
				}
				catch (Exception ex2)
				{
					onFailure(ex2.Message);
					yield break;
				}
				if (!Object.op_Implicit((Object)(object)content) || (int)content.loadState == 3 || content.samples <= 0)
				{
					onFailure("Unity could not decode the file");
					yield break;
				}
				onBytesRead?.Invoke((long)request.downloadedBytes);
				if (!s_reportedFirstClip)
				{
					s_reportedFirstClip = true;
					string[] obj = new string[8]
					{
						$"First clip of this run, asked for {mode}: Unity read back ",
						"compressed=",
						null,
						null,
						null,
						null,
						null,
						null
					};
					obj[2] = ((handler != null) ? handler.compressed.ToString() : null) ?? "n/a";
					obj[3] = ", streamAudio=";
					obj[4] = ((handler != null) ? handler.streamAudio.ToString() : null) ?? "n/a";
					obj[5] = ", ";
					obj[6] = $"and gave a clip with loadType={content.loadType} (never truthful here), ";
					obj[7] = $"loadState={content.loadState}.";
					Log.Debug(string.Concat(obj));
				}
				((Object)content).name = clipName;
				Log.Debug($"Decoded '{clipName}' with Unity's decoder: {content.samples} samples, " + $"{content.channels} ch, {content.frequency} Hz" + $", {content.loadType}.");
				onSuccess(content);
			}
			finally
			{
				long timestamp3 = Stopwatch.GetTimestamp();
				if (mode == AudioLoadMode.Streaming)
				{
					s_streamingRequests.Add(request);
				}
				else
				{
					request.Dispose();
				}
				LoadStats.AddOverhead(Stopwatch.GetTimestamp() - timestamp3);
			}
		}
	}
	internal static class Log
	{
		private static ManualLogSource s_source;

		public static void Init(ManualLogSource source)
		{
			s_source = source;
		}

		public static void Message(string message)
		{
			ManualLogSource obj = s_source;
			if (obj != null)
			{
				obj.LogMessage((object)message);
			}
		}

		public static void Warning(string message)
		{
			ManualLogSource obj = s_source;
			if (obj != null)
			{
				obj.LogWarning((object)message);
			}
		}

		public static void Debug(string message)
		{
			if (AudioFormatsConfig.VerboseLogging != null && AudioFormatsConfig.VerboseLogging.Value)
			{
				ManualLogSource obj = s_source;
				if (obj != null)
				{
					obj.LogInfo((object)message);
				}
			}
		}
	}
}
namespace Tchernobill.AudioFormats.Patches
{
	[HarmonyPatch(typeof(AudioClipCategory), "LoadContent")]
	internal static class Patch_AudioClipCategory_LoadContent
	{
		[HarmonyPostfix]
		public static void Postfix(SLPack pack, Dictionary<string, object> __result)
		{
			if (pack == null || __result == null)
			{
				return;
			}
			string pathForCategory = pack.GetPathForCategory<AudioClipCategory>();
			if (!pack.DirectoryExists(pathForCategory))
			{
				return;
			}
			List<string> list = new List<string>();
			string[] files = pack.GetFiles(pathForCategory);
			foreach (string text in files)
			{
				if (AudioFileFormats.IsAdded(AudioFileFormats.FromExtension(text)))
				{
					list.Add(text);
				}
			}
			if (list.Count == 0)
			{
				return;
			}
			if (ShouldLoadLazily(list))
			{
				foreach (string item in list)
				{
					LazyAudioClips.Index(pack, item);
				}
				Log.Message($"Indexed {list.Count} .ogg/.mp3 clips from pack '{pack.Name}'. " + "They are decoded the first time something plays them.");
				return;
			}
			foreach (string item2 in list)
			{
				string key = item2;
				SideLoaderBridge.PackLoadAudioClip(pack, pathForCategory, Path.GetFileName(item2), delegate(AudioClip clip)
				{
					if (Object.op_Implicit((Object)(object)clip))
					{
						__result[key] = clip;
					}
				});
			}
			Log.Message($"Queued {list.Count} .ogg/.mp3 clips from pack '{pack.Name}'.");
		}

		private static bool ShouldLoadLazily(List<string> clips)
		{
			int value = AudioFormatsConfig.LazyLoadingThreshold.Value;
			if (value <= 0 || clips.Count < value)
			{
				return false;
			}
			return File.Exists(clips[0]);
		}
	}
	[HarmonyPatch(typeof(CustomAudio), "ConvertByteArrayToAudioClip")]
	internal static class Patch_CustomAudio_ConvertByteArrayToAudioClip
	{
		[HarmonyPrefix]
		public static bool Prefix(byte[] sourceData, string name, ref AudioClip __result)
		{
			AudioFileFormat format = AudioFileFormats.FromHeader(sourceData);
			if (!AudioFileFormats.IsAdded(format))
			{
				return true;
			}
			__result = ManagedAudioDecoder.Decode(sourceData, format, name);
			return false;
		}
	}
	[HarmonyPatch(typeof(CustomAudio), "LoadAudioClip", new Type[]
	{
		typeof(byte[]),
		typeof(string),
		typeof(SLPack)
	})]
	internal static class Patch_CustomAudio_LoadAudioClip_Bytes
	{
		[HarmonyPrefix]
		public static bool Prefix(byte[] data, string name, SLPack pack, ref AudioClip __result)
		{
			if (!AudioFileFormats.IsAdded(AudioFileFormats.FromHeader(data)))
			{
				return true;
			}
			__result = AudioClipLoader.LoadFromBytes(data, name, pack);
			return false;
		}
	}
	[HarmonyPatch(typeof(CustomAudio), "LoadAudioClip", new Type[]
	{
		typeof(string),
		typeof(SLPack),
		typeof(Action<AudioClip>)
	})]
	internal static class Patch_CustomAudio_LoadAudioClip_File
	{
		[HarmonyPrefix]
		public static bool Prefix(string filePath, SLPack pack, Action<AudioClip> onClipLoaded)
		{
			if (!AudioFileFormats.IsAdded(AudioFileFormats.FromExtension(filePath)))
			{
				return true;
			}
			AudioClipLoader.LoadFromFile(filePath, pack, onClipLoaded);
			return false;
		}
	}
}

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.Versioning;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis;
using NLayer.Decoder;

[assembly: CompilationRelaxations(8)]
[assembly: RuntimeCompatibility(WrapNonExceptionThrows = true)]
[assembly: Debuggable(DebuggableAttribute.DebuggingModes.IgnoreSymbolStoreSequencePoints)]
[assembly: TargetFramework(".NETStandard,Version=v2.0", FrameworkDisplayName = ".NET Standard 2.0")]
[assembly: AssemblyCompany("Mark Heath, Andrew Ward")]
[assembly: AssemblyConfiguration("Release")]
[assembly: AssemblyCopyright("© Mark Heath 2026")]
[assembly: AssemblyDescription("Fully Managed MPEG 1 & 2 Decoder for Layers 1, 2, & 3")]
[assembly: AssemblyFileVersion("3.0.0.0")]
[assembly: AssemblyInformationalVersion("3.0.0+046c7ce422970f8f0f0bc205d6c6341bcb7debf1")]
[assembly: AssemblyProduct("NLayer")]
[assembly: AssemblyTitle("NLayer")]
[assembly: AssemblyMetadata("RepositoryUrl", "https://github.com/naudio/NLayer")]
[assembly: AssemblyVersion("3.0.0.0")]
[module: RefSafetyRules(11)]
namespace Microsoft.CodeAnalysis
{
	[CompilerGenerated]
	[Embedded]
	internal sealed class EmbeddedAttribute : Attribute
	{
	}
}
namespace System.Runtime.CompilerServices
{
	[CompilerGenerated]
	[Embedded]
	[AttributeUsage(AttributeTargets.Module, AllowMultiple = false, Inherited = false)]
	internal sealed class RefSafetyRulesAttribute : Attribute
	{
		public readonly int Version;

		public RefSafetyRulesAttribute(int P_0)
		{
			Version = P_0;
		}
	}
}
namespace NLayer
{
	public enum MpegVersion
	{
		Unknown = 0,
		Version1 = 10,
		Version2 = 20,
		Version25 = 25
	}
	public enum MpegLayer
	{
		Unknown,
		LayerI,
		LayerII,
		LayerIII
	}
	public enum MpegChannelMode
	{
		Stereo,
		JointStereo,
		DualChannel,
		Mono
	}
	public enum StereoMode
	{
		Both,
		LeftOnly,
		RightOnly,
		DownmixToMono
	}
	public interface IMpegFrame
	{
		int SampleRate { get; }

		int SampleRateIndex { get; }

		int FrameLength { get; }

		int BitRate { get; }

		MpegVersion Version { get; }

		MpegLayer Layer { get; }

		MpegChannelMode ChannelMode { get; }

		int ChannelModeExtension { get; }

		int SampleCount { get; }

		int BitRateIndex { get; }

		bool IsCopyrighted { get; }

		bool HasCrc { get; }

		bool IsCorrupted { get; }

		void Reset();

		int ReadBits(int bitCount);
	}
	public class MpegFile : IDisposable
	{
		private Stream _stream;

		private bool _closeStream;

		private bool _eofFound;

		private MpegStreamReader _reader;

		private MpegFrameDecoder _decoder;

		private object _seekLock = new object();

		private long _position;

		private int _encoderDelay;

		private int _encoderPadding;

		private bool _decoderDelaySkipped;

		private float[] _readBuf = new float[2304];

		private int _readBufLen;

		private int _readBufOfs;

		public int SampleRate => _reader.SampleRate;

		public int Channels => OutputChannels;

		private int OutputChannels
		{
			get
			{
				if (StereoMode != StereoMode.Both)
				{
					return 1;
				}
				return _reader.Channels;
			}
		}

		public bool CanSeek => _reader.CanSeek;

		public long Length
		{
			get
			{
				long sampleCount = _reader.SampleCount;
				if (sampleCount < 0)
				{
					return -1L;
				}
				return (sampleCount - _encoderDelay - _encoderPadding) * OutputChannels * 4;
			}
		}

		public TimeSpan Duration
		{
			get
			{
				long sampleCount = _reader.SampleCount;
				if (sampleCount == -1)
				{
					return TimeSpan.Zero;
				}
				return TimeSpan.FromSeconds((double)(sampleCount - _encoderDelay - _encoderPadding) / (double)_reader.SampleRate);
			}
		}

		public long Position
		{
			get
			{
				return _position;
			}
			set
			{
				if (!_reader.CanSeek)
				{
					throw new InvalidOperationException("Cannot Seek!");
				}
				if (value < 0)
				{
					throw new ArgumentOutOfRangeException("value");
				}
				long num = value / 4 / OutputChannels;
				int num2 = 0;
				if (num >= _reader.FirstFrameSampleCount)
				{
					num2 = _reader.FirstFrameSampleCount;
					num -= num2;
				}
				lock (_seekLock)
				{
					long num3 = _reader.SeekTo(num);
					if (num3 == -1)
					{
						throw new ArgumentOutOfRangeException("value");
					}
					_decoder.Reset();
					if (num2 != 0)
					{
						_decoder.DecodeFrame(_reader.NextFrame(), _readBuf, 0);
						num3 += num2;
					}
					_position = num3 * 4 * OutputChannels;
					_eofFound = false;
					_decoderDelaySkipped = num3 > 0 || _encoderDelay == 0;
					_readBufOfs = (_readBufLen = 0);
				}
			}
		}

		public TimeSpan Time
		{
			get
			{
				return TimeSpan.FromSeconds((double)_position / 4.0 / (double)OutputChannels / (double)_reader.SampleRate);
			}
			set
			{
				Position = (long)(value.TotalSeconds * (double)_reader.SampleRate * (double)OutputChannels * 4.0);
			}
		}

		public StereoMode StereoMode
		{
			get
			{
				return _decoder.StereoMode;
			}
			set
			{
				_decoder.StereoMode = value;
			}
		}

		public MpegFile(string fileName)
		{
			Init(File.Open(fileName, FileMode.Open, FileAccess.Read, FileShare.Read), closeStream: true);
		}

		public MpegFile(Stream stream)
		{
			Init(stream, closeStream: false);
		}

		private void Init(Stream stream, bool closeStream)
		{
			_stream = stream;
			_closeStream = closeStream;
			_reader = new MpegStreamReader(_stream);
			_decoder = new MpegFrameDecoder();
			_encoderDelay = _reader.EncoderDelay;
			_encoderPadding = _reader.EncoderPadding;
		}

		public void Dispose()
		{
			if (_closeStream)
			{
				_stream.Dispose();
				_closeStream = false;
			}
		}

		public void SetEQ(float[] eq)
		{
			_decoder.SetEQ(eq);
		}

		public int ReadSamples(byte[] buffer, int index, int count)
		{
			if (index < 0 || index + count > buffer.Length)
			{
				throw new ArgumentOutOfRangeException("index");
			}
			count -= count % 4;
			return ReadSamplesImpl(buffer, index, count, 32);
		}

		public int ReadSamples(float[] buffer, int index, int count)
		{
			if (index < 0 || index + count > buffer.Length)
			{
				throw new ArgumentOutOfRangeException("index");
			}
			return ReadSamplesImpl(buffer, index * 4, count * 4, 32) / 4;
		}

		public int ReadSamplesInt16(byte[] buffer, int index, int count)
		{
			if (index < 0 || index + count > buffer.Length * 2)
			{
				throw new ArgumentOutOfRangeException("index");
			}
			return ReadSamplesImpl(buffer, index, count, 16) * 2 / 4;
		}

		public int ReadSamplesInt8(byte[] buffer, int index, int count)
		{
			if (index < 0 || index + count > buffer.Length * 4)
			{
				throw new ArgumentOutOfRangeException("index");
			}
			return ReadSamplesImpl(buffer, index, count, 8) / 4;
		}

		private long GetTotalBytes()
		{
			long sampleCount = _reader.SampleCount;
			if (sampleCount < 0)
			{
				return long.MaxValue;
			}
			return (sampleCount - _encoderDelay - _encoderPadding) * OutputChannels * 4;
		}

		private bool TryFillReadBuffer()
		{
			while (true)
			{
				if (_eofFound)
				{
					return false;
				}
				MpegFrame mpegFrame = _reader.NextFrame();
				if (mpegFrame == null)
				{
					_eofFound = true;
					return false;
				}
				try
				{
					_readBufLen = _decoder.DecodeFrame(mpegFrame, _readBuf, 0) * 4;
					_readBufOfs = 0;
					if (!_decoderDelaySkipped)
					{
						int num = _encoderDelay * OutputChannels * 4;
						if (num > 0 && num <= _readBufLen)
						{
							_readBufOfs = num;
						}
						_decoderDelaySkipped = true;
						if (_readBufOfs >= _readBufLen)
						{
							_readBufLen = (_readBufOfs = 0);
						}
					}
				}
				catch (InvalidDataException)
				{
					_decoder.Reset();
					_readBufOfs = (_readBufLen = 0);
					continue;
				}
				catch (EndOfStreamException)
				{
					_eofFound = true;
					return false;
				}
				finally
				{
					mpegFrame.ClearBuffer();
				}
				break;
			}
			return true;
		}

		private int AvailableBytes(long totalBytes, int count)
		{
			if (_readBufLen <= _readBufOfs)
			{
				return 0;
			}
			int num = _readBufLen - _readBufOfs;
			if (num > count)
			{
				num = count;
			}
			long num2 = totalBytes - _position;
			if (num > num2)
			{
				num = (int)num2;
			}
			return num;
		}

		private void AdvanceReadBuffer(int temp)
		{
			_position += temp;
			_readBufOfs += temp;
			if (_readBufOfs == _readBufLen)
			{
				_readBufLen = 0;
			}
		}

		private int ReadSamplesImpl(Array buffer, int index, int count, int bitDepth)
		{
			int num = 0;
			long totalBytes = GetTotalBytes();
			lock (_seekLock)
			{
				while (count > 0)
				{
					if (_position >= totalBytes)
					{
						_eofFound = true;
						break;
					}
					int num2 = AvailableBytes(totalBytes, count);
					if (num2 > 0)
					{
						if (bitDepth == 32)
						{
							Buffer.BlockCopy(_readBuf, _readBufOfs, buffer, index, num2);
						}
						else
						{
							byte[] array = (byte[])buffer;
							int num3 = _readBufOfs / 4;
							int num4 = index / 4;
							int num5 = num2 / 4;
							if (bitDepth == 8)
							{
								for (int i = 0; i < num5; i++)
								{
									array[num4 + i] = (byte)Math.Round(127.5f * _readBuf[num3 + i] + 127.5f);
								}
							}
							else
							{
								for (int j = 0; j < num5; j++)
								{
									int num6 = (int)Math.Round(32767.5f * _readBuf[num3 + j] - 0.5f);
									if (num6 < 0)
									{
										num6 += 65536;
									}
									array[2 * (num4 + j)] = (byte)(num6 % 256);
									array[2 * (num4 + j) + 1] = (byte)(num6 / 256);
								}
							}
						}
						num += num2;
						count -= num2;
						index += num2;
						AdvanceReadBuffer(num2);
					}
					if (_readBufLen == 0 && !TryFillReadBuffer())
					{
						break;
					}
				}
			}
			return num;
		}
	}
	public class MpegFrameDecoder
	{
		private LayerIDecoder _layerIDecoder;

		private LayerIIDecoder _layerIIDecoder;

		private LayerIIIDecoder _layerIIIDecoder;

		private float[] _eqFactors;

		private float[] _ch0;

		private float[] _ch1;

		public StereoMode StereoMode { get; set; }

		public MpegFrameDecoder()
		{
			_ch0 = new float[1152];
			_ch1 = new float[1152];
		}

		public void SetEQ(float[] eq)
		{
			if (eq != null)
			{
				float[] array = new float[32];
				for (int i = 0; i < eq.Length; i++)
				{
					array[i] = (float)Math.Pow(2.0, eq[i] / 6f);
				}
				_eqFactors = array;
			}
			else
			{
				_eqFactors = null;
			}
		}

		public int DecodeFrame(IMpegFrame frame, byte[] dest, int destOffset)
		{
			if (frame == null)
			{
				throw new ArgumentNullException("frame");
			}
			if (dest == null)
			{
				throw new ArgumentNullException("dest");
			}
			if (destOffset % 4 != 0)
			{
				throw new ArgumentException("Must be an even multiple of 4", "destOffset");
			}
			if ((dest.Length - destOffset) / 4 < RequiredSampleCount(frame))
			{
				throw new ArgumentException("Buffer not large enough!  Must be big enough to hold the frame's entire output.  This is up to 9,216 bytes.", "dest");
			}
			return DecodeFrameImpl(frame, dest, destOffset / 4) * 4;
		}

		public int DecodeFrame(IMpegFrame frame, float[] dest, int destOffset)
		{
			if (frame == null)
			{
				throw new ArgumentNullException("frame");
			}
			if (dest == null)
			{
				throw new ArgumentNullException("dest");
			}
			if (dest.Length - destOffset < RequiredSampleCount(frame))
			{
				throw new ArgumentException("Buffer not large enough!  Must be big enough to hold the frame's entire output.  This is up to 2,304 elements.", "dest");
			}
			return DecodeFrameImpl(frame, dest, destOffset);
		}

		private int DecodeToChannels(IMpegFrame frame)
		{
			frame.Reset();
			LayerDecoderBase layerDecoderBase = null;
			switch (frame.Layer)
			{
			case MpegLayer.LayerI:
				if (_layerIDecoder == null)
				{
					_layerIDecoder = new LayerIDecoder();
				}
				layerDecoderBase = _layerIDecoder;
				break;
			case MpegLayer.LayerII:
				if (_layerIIDecoder == null)
				{
					_layerIIDecoder = new LayerIIDecoder();
				}
				layerDecoderBase = _layerIIDecoder;
				break;
			case MpegLayer.LayerIII:
				if (_layerIIIDecoder == null)
				{
					_layerIIIDecoder = new LayerIIIDecoder();
				}
				layerDecoderBase = _layerIIIDecoder;
				break;
			}
			if (layerDecoderBase == null)
			{
				return 0;
			}
			layerDecoderBase.SetEQ(_eqFactors);
			layerDecoderBase.StereoMode = StereoMode;
			return layerDecoderBase.DecodeFrame(frame, _ch0, _ch1);
		}

		private bool IsSingleChannel(IMpegFrame frame)
		{
			if (frame.ChannelMode != MpegChannelMode.Mono)
			{
				return StereoMode != StereoMode.Both;
			}
			return true;
		}

		private int DecodeFrameImpl(IMpegFrame frame, Array dest, int destOffset)
		{
			int num = DecodeToChannels(frame);
			if (num > 0)
			{
				if (IsSingleChannel(frame))
				{
					Buffer.BlockCopy(_ch0, 0, dest, destOffset * 4, num * 4);
				}
				else if (dest is float[] array)
				{
					for (int i = 0; i < num; i++)
					{
						array[destOffset++] = _ch0[i];
						array[destOffset++] = _ch1[i];
					}
					num *= 2;
				}
				else
				{
					for (int j = 0; j < num; j++)
					{
						Buffer.BlockCopy(_ch0, j * 4, dest, destOffset * 4, 4);
						destOffset++;
						Buffer.BlockCopy(_ch1, j * 4, dest, destOffset * 4, 4);
						destOffset++;
					}
					num *= 2;
				}
				return num;
			}
			return 0;
		}

		private static int RequiredSampleCount(IMpegFrame frame)
		{
			return ((frame.ChannelMode == MpegChannelMode.Mono) ? 1 : 2) * frame.SampleCount;
		}

		public void Reset()
		{
			if (_layerIDecoder != null)
			{
				_layerIDecoder.ResetForSeek();
			}
			if (_layerIIDecoder != null)
			{
				_layerIIDecoder.ResetForSeek();
			}
			if (_layerIIIDecoder != null)
			{
				_layerIIIDecoder.ResetForSeek();
			}
		}
	}
}
namespace NLayer.Decoder
{
	internal class BitReservoir
	{
		private byte[] _buf = new byte[8192];

		private int _start;

		private int _end = -1;

		private int _bitsLeft;

		private long _bitsRead;

		public int BitsAvailable
		{
			get
			{
				if (_bitsLeft > 0)
				{
					return (_end + _buf.Length - _start) % _buf.Length * 8 + _bitsLeft;
				}
				return 0;
			}
		}

		public long BitsRead => _bitsRead;

		private static int GetSlots(IMpegFrame frame)
		{
			int num = frame.FrameLength - 4;
			if (frame.HasCrc)
			{
				num -= 2;
			}
			if (frame.Version == MpegVersion.Version1 && frame.ChannelMode != MpegChannelMode.Mono)
			{
				return num - 32;
			}
			if (frame.Version > MpegVersion.Version1 && frame.ChannelMode == MpegChannelMode.Mono)
			{
				return num - 9;
			}
			return num - 17;
		}

		public bool AddBits(IMpegFrame frame, int overlap)
		{
			int end = _end;
			int num = GetSlots(frame);
			while (--num >= 0)
			{
				int num2 = frame.ReadBits(8);
				if (num2 == -1)
				{
					throw new InvalidDataException("Frame did not have enough bytes!");
				}
				_buf[++_end] = (byte)num2;
				if (_end == _buf.Length - 1)
				{
					_end = -1;
				}
			}
			_bitsLeft = 8;
			if (end == -1)
			{
				return overlap == 0;
			}
			if ((end + 1 - _start + _buf.Length) % _buf.Length >= overlap)
			{
				_start = (end + 1 - overlap + _buf.Length) % _buf.Length;
				return true;
			}
			_start = end + overlap;
			return false;
		}

		public int GetBits(int count)
		{
			int readCount;
			int result = TryPeekBits(count, out readCount);
			if (readCount < count)
			{
				throw new InvalidDataException("Reservoir did not have enough bytes!");
			}
			SkipBits(count);
			return result;
		}

		public int Get1Bit()
		{
			if (_bitsLeft == 0)
			{
				throw new InvalidDataException("Reservoir did not have enough bytes!");
			}
			_bitsLeft--;
			_bitsRead++;
			int result = (_buf[_start] >> _bitsLeft) & 1;
			if (_bitsLeft == 0 && (_start = (_start + 1) % _buf.Length) != _end + 1)
			{
				_bitsLeft = 8;
			}
			return result;
		}

		public int TryPeekBits(int count, out int readCount)
		{
			if (count < 0 || count > 32)
			{
				throw new ArgumentOutOfRangeException("count", "Must return between 0 and 32 bits!");
			}
			if (_bitsLeft == 0 || count == 0)
			{
				readCount = 0;
				return 0;
			}
			int num = _buf[_start];
			if (count < _bitsLeft)
			{
				num >>= _bitsLeft - count;
				num &= (1 << count) - 1;
				readCount = count;
				return num;
			}
			num &= (1 << _bitsLeft) - 1;
			count -= _bitsLeft;
			readCount = _bitsLeft;
			int num2 = _start;
			while (count > 0 && (num2 = (num2 + 1) % _buf.Length) != _end + 1)
			{
				int num3 = Math.Min(count, 8);
				num <<= num3;
				num |= _buf[num2] >> (8 - num3) % 8;
				count -= num3;
				readCount += num3;
			}
			return num;
		}

		public void SkipBits(int count)
		{
			if (count > 0)
			{
				if (count > BitsAvailable)
				{
					throw new ArgumentOutOfRangeException("count");
				}
				int num = 8 - _bitsLeft + count;
				_start = (num / 8 + _start) % _buf.Length;
				_bitsLeft = 8 - num % 8;
				_bitsRead += count;
			}
		}

		public void RewindBits(int count)
		{
			_bitsLeft += count;
			_bitsRead -= count;
			while (_bitsLeft > 8)
			{
				_start--;
				_bitsLeft -= 8;
			}
			while (_start < 0)
			{
				_start += _buf.Length;
			}
		}

		public void FlushBits()
		{
			if (_bitsLeft < 8)
			{
				SkipBits(_bitsLeft);
			}
		}

		public void Reset()
		{
			_start = 0;
			_end = -1;
			_bitsLeft = 0;
		}
	}
	internal abstract class FrameBase
	{
		private static int _totalAllocation;

		private MpegStreamReader _reader;

		private byte[] _savedBuffer;

		internal static int TotalAllocation => Interlocked.CompareExchange(ref _totalAllocation, 0, 0);

		internal long Offset { get; private set; }

		internal int Length { get; set; }

		internal bool Validate(long offset, MpegStreamReader reader)
		{
			Offset = offset;
			_reader = reader;
			int num = Validate();
			if (num > 0)
			{
				Length = num;
				return true;
			}
			return false;
		}

		protected int Read(int offset, byte[] buffer)
		{
			return Read(offset, buffer, 0, buffer.Length);
		}

		protected int Read(int offset, byte[] buffer, int index, int count)
		{
			if (_savedBuffer != null)
			{
				if (index < 0 || index + count > buffer.Length)
				{
					return 0;
				}
				if (offset < 0 || offset >= _savedBuffer.Length)
				{
					return 0;
				}
				if (offset + count > _savedBuffer.Length)
				{
					count = _savedBuffer.Length - index;
				}
				Array.Copy(_savedBuffer, offset, buffer, index, count);
				return count;
			}
			return _reader.Read(Offset + offset, buffer, index, count);
		}

		protected int ReadByte(int offset)
		{
			if (_savedBuffer != null)
			{
				if (offset < 0)
				{
					throw new ArgumentOutOfRangeException();
				}
				if (offset >= _savedBuffer.Length)
				{
					return -1;
				}
				return _savedBuffer[offset];
			}
			return _reader.ReadByte(Offset + offset);
		}

		protected abstract int Validate();

		internal void SaveBuffer()
		{
			_savedBuffer = new byte[Length];
			_reader.Read(Offset, _savedBuffer, 0, Length);
			Interlocked.Add(ref _totalAllocation, Length);
		}

		internal void ClearBuffer()
		{
			Interlocked.Add(ref _totalAllocation, -Length);
			_savedBuffer = null;
		}

		internal virtual void Parse()
		{
		}
	}
	internal class Huffman
	{
		private class HuffmanListNode
		{
			internal byte Value;

			internal int Length;

			internal int Bits;

			internal int Mask;

			internal HuffmanListNode Next;
		}

		private static readonly byte[][,] _codeTables;

		private static readonly float[] _floatLookup;

		private static HuffmanListNode[] _llCache;

		private static int[] _llCacheMaxBits;

		private static readonly int[] LIN_BITS;

		static Huffman()
		{
			_codeTables = new byte[17][,]
			{
				new byte[7, 2]
				{
					{ 2, 1 },
					{ 0, 0 },
					{ 2, 1 },
					{ 0, 16 },
					{ 2, 1 },
					{ 0, 1 },
					{ 0, 17 }
				},
				new byte[17, 2]
				{
					{ 2, 1 },
					{ 0, 0 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 16 },
					{ 0, 1 },
					{ 2, 1 },
					{ 0, 17 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 32 },
					{ 0, 33 },
					{ 2, 1 },
					{ 0, 18 },
					{ 2, 1 },
					{ 0, 2 },
					{ 0, 34 }
				},
				new byte[17, 2]
				{
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 0 },
					{ 0, 1 },
					{ 2, 1 },
					{ 0, 17 },
					{ 2, 1 },
					{ 0, 16 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 32 },
					{ 0, 33 },
					{ 2, 1 },
					{ 0, 18 },
					{ 2, 1 },
					{ 0, 2 },
					{ 0, 34 }
				},
				new byte[31, 2]
				{
					{ 2, 1 },
					{ 0, 0 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 16 },
					{ 0, 1 },
					{ 2, 1 },
					{ 0, 17 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 32 },
					{ 0, 2 },
					{ 2, 1 },
					{ 0, 33 },
					{ 0, 18 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 34 },
					{ 0, 48 },
					{ 2, 1 },
					{ 0, 3 },
					{ 0, 19 },
					{ 2, 1 },
					{ 0, 49 },
					{ 2, 1 },
					{ 0, 50 },
					{ 2, 1 },
					{ 0, 35 },
					{ 0, 51 }
				},
				new byte[31, 2]
				{
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 0 },
					{ 0, 16 },
					{ 0, 17 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 1 },
					{ 2, 1 },
					{ 0, 32 },
					{ 0, 33 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 18 },
					{ 2, 1 },
					{ 0, 2 },
					{ 0, 34 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 49 },
					{ 0, 19 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 48 },
					{ 0, 50 },
					{ 2, 1 },
					{ 0, 35 },
					{ 2, 1 },
					{ 0, 3 },
					{ 0, 51 }
				},
				new byte[71, 2]
				{
					{ 2, 1 },
					{ 0, 0 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 16 },
					{ 0, 1 },
					{ 8, 1 },
					{ 2, 1 },
					{ 0, 17 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 32 },
					{ 0, 2 },
					{ 0, 33 },
					{ 18, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 18 },
					{ 2, 1 },
					{ 0, 34 },
					{ 0, 48 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 49 },
					{ 0, 19 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 3 },
					{ 0, 50 },
					{ 2, 1 },
					{ 0, 35 },
					{ 0, 4 },
					{ 10, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 64 },
					{ 0, 65 },
					{ 2, 1 },
					{ 0, 20 },
					{ 2, 1 },
					{ 0, 66 },
					{ 0, 36 },
					{ 12, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 51 },
					{ 0, 67 },
					{ 0, 80 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 52 },
					{ 0, 5 },
					{ 0, 81 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 21 },
					{ 2, 1 },
					{ 0, 82 },
					{ 0, 37 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 68 },
					{ 0, 53 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 83 },
					{ 0, 84 },
					{ 2, 1 },
					{ 0, 69 },
					{ 0, 85 }
				},
				new byte[71, 2]
				{
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 0 },
					{ 2, 1 },
					{ 0, 16 },
					{ 0, 1 },
					{ 2, 1 },
					{ 0, 17 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 33 },
					{ 0, 18 },
					{ 14, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 32 },
					{ 0, 2 },
					{ 2, 1 },
					{ 0, 34 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 48 },
					{ 0, 3 },
					{ 2, 1 },
					{ 0, 49 },
					{ 0, 19 },
					{ 14, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 50 },
					{ 0, 35 },
					{ 2, 1 },
					{ 0, 64 },
					{ 0, 4 },
					{ 2, 1 },
					{ 0, 65 },
					{ 2, 1 },
					{ 0, 20 },
					{ 0, 66 },
					{ 12, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 36 },
					{ 2, 1 },
					{ 0, 51 },
					{ 0, 80 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 67 },
					{ 0, 52 },
					{ 0, 81 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 21 },
					{ 2, 1 },
					{ 0, 5 },
					{ 0, 82 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 37 },
					{ 2, 1 },
					{ 0, 68 },
					{ 0, 53 },
					{ 2, 1 },
					{ 0, 83 },
					{ 2, 1 },
					{ 0, 69 },
					{ 2, 1 },
					{ 0, 84 },
					{ 0, 85 }
				},
				new byte[71, 2]
				{
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 0 },
					{ 0, 16 },
					{ 2, 1 },
					{ 0, 1 },
					{ 0, 17 },
					{ 10, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 32 },
					{ 0, 33 },
					{ 2, 1 },
					{ 0, 18 },
					{ 2, 1 },
					{ 0, 2 },
					{ 0, 34 },
					{ 12, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 48 },
					{ 0, 3 },
					{ 0, 49 },
					{ 2, 1 },
					{ 0, 19 },
					{ 2, 1 },
					{ 0, 50 },
					{ 0, 35 },
					{ 12, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 65 },
					{ 0, 20 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 64 },
					{ 0, 51 },
					{ 2, 1 },
					{ 0, 66 },
					{ 0, 36 },
					{ 10, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 4 },
					{ 0, 80 },
					{ 0, 67 },
					{ 2, 1 },
					{ 0, 52 },
					{ 0, 81 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 21 },
					{ 0, 82 },
					{ 2, 1 },
					{ 0, 37 },
					{ 0, 68 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 5 },
					{ 0, 84 },
					{ 0, 83 },
					{ 2, 1 },
					{ 0, 53 },
					{ 2, 1 },
					{ 0, 69 },
					{ 0, 85 }
				},
				new byte[127, 2]
				{
					{ 2, 1 },
					{ 0, 0 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 16 },
					{ 0, 1 },
					{ 10, 1 },
					{ 2, 1 },
					{ 0, 17 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 32 },
					{ 0, 2 },
					{ 2, 1 },
					{ 0, 33 },
					{ 0, 18 },
					{ 28, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 34 },
					{ 0, 48 },
					{ 2, 1 },
					{ 0, 49 },
					{ 0, 19 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 3 },
					{ 0, 50 },
					{ 2, 1 },
					{ 0, 35 },
					{ 0, 64 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 65 },
					{ 0, 20 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 4 },
					{ 0, 51 },
					{ 2, 1 },
					{ 0, 66 },
					{ 0, 36 },
					{ 28, 1 },
					{ 10, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 80 },
					{ 0, 5 },
					{ 0, 96 },
					{ 2, 1 },
					{ 0, 97 },
					{ 0, 22 },
					{ 12, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 67 },
					{ 0, 52 },
					{ 0, 81 },
					{ 2, 1 },
					{ 0, 21 },
					{ 2, 1 },
					{ 0, 82 },
					{ 0, 37 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 38 },
					{ 0, 54 },
					{ 0, 113 },
					{ 20, 1 },
					{ 8, 1 },
					{ 2, 1 },
					{ 0, 23 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 68 },
					{ 0, 83 },
					{ 0, 6 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 53 },
					{ 0, 69 },
					{ 0, 98 },
					{ 2, 1 },
					{ 0, 112 },
					{ 2, 1 },
					{ 0, 7 },
					{ 0, 100 },
					{ 14, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 114 },
					{ 0, 39 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 99 },
					{ 2, 1 },
					{ 0, 84 },
					{ 0, 85 },
					{ 2, 1 },
					{ 0, 70 },
					{ 0, 115 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 55 },
					{ 0, 101 },
					{ 2, 1 },
					{ 0, 86 },
					{ 0, 116 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 71 },
					{ 2, 1 },
					{ 0, 102 },
					{ 0, 117 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 87 },
					{ 0, 118 },
					{ 2, 1 },
					{ 0, 103 },
					{ 0, 119 }
				},
				new byte[127, 2]
				{
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 0 },
					{ 2, 1 },
					{ 0, 16 },
					{ 0, 1 },
					{ 8, 1 },
					{ 2, 1 },
					{ 0, 17 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 32 },
					{ 0, 2 },
					{ 0, 18 },
					{ 24, 1 },
					{ 8, 1 },
					{ 2, 1 },
					{ 0, 33 },
					{ 2, 1 },
					{ 0, 34 },
					{ 2, 1 },
					{ 0, 48 },
					{ 0, 3 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 49 },
					{ 0, 19 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 50 },
					{ 0, 35 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 64 },
					{ 0, 4 },
					{ 2, 1 },
					{ 0, 65 },
					{ 0, 20 },
					{ 30, 1 },
					{ 16, 1 },
					{ 10, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 66 },
					{ 0, 36 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 51 },
					{ 0, 67 },
					{ 0, 80 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 52 },
					{ 0, 81 },
					{ 0, 97 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 22 },
					{ 2, 1 },
					{ 0, 6 },
					{ 0, 38 },
					{ 2, 1 },
					{ 0, 98 },
					{ 2, 1 },
					{ 0, 21 },
					{ 2, 1 },
					{ 0, 5 },
					{ 0, 82 },
					{ 16, 1 },
					{ 10, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 37 },
					{ 0, 68 },
					{ 0, 96 },
					{ 2, 1 },
					{ 0, 99 },
					{ 0, 54 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 112 },
					{ 0, 23 },
					{ 0, 113 },
					{ 16, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 7 },
					{ 0, 100 },
					{ 0, 114 },
					{ 2, 1 },
					{ 0, 39 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 83 },
					{ 0, 53 },
					{ 2, 1 },
					{ 0, 84 },
					{ 0, 69 },
					{ 10, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 70 },
					{ 0, 115 },
					{ 2, 1 },
					{ 0, 55 },
					{ 2, 1 },
					{ 0, 101 },
					{ 0, 86 },
					{ 10, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 85 },
					{ 0, 87 },
					{ 0, 116 },
					{ 2, 1 },
					{ 0, 71 },
					{ 0, 102 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 117 },
					{ 0, 118 },
					{ 2, 1 },
					{ 0, 103 },
					{ 0, 119 }
				},
				new byte[127, 2]
				{
					{ 12, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 16 },
					{ 0, 1 },
					{ 2, 1 },
					{ 0, 17 },
					{ 2, 1 },
					{ 0, 0 },
					{ 2, 1 },
					{ 0, 32 },
					{ 0, 2 },
					{ 16, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 33 },
					{ 0, 18 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 34 },
					{ 0, 49 },
					{ 2, 1 },
					{ 0, 19 },
					{ 2, 1 },
					{ 0, 48 },
					{ 2, 1 },
					{ 0, 3 },
					{ 0, 64 },
					{ 26, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 50 },
					{ 0, 35 },
					{ 2, 1 },
					{ 0, 65 },
					{ 0, 51 },
					{ 10, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 20 },
					{ 0, 66 },
					{ 2, 1 },
					{ 0, 36 },
					{ 2, 1 },
					{ 0, 4 },
					{ 0, 80 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 67 },
					{ 0, 52 },
					{ 2, 1 },
					{ 0, 81 },
					{ 0, 21 },
					{ 28, 1 },
					{ 14, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 82 },
					{ 0, 37 },
					{ 2, 1 },
					{ 0, 83 },
					{ 0, 53 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 96 },
					{ 0, 22 },
					{ 0, 97 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 98 },
					{ 0, 38 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 5 },
					{ 0, 6 },
					{ 0, 68 },
					{ 2, 1 },
					{ 0, 84 },
					{ 0, 69 },
					{ 18, 1 },
					{ 10, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 99 },
					{ 0, 54 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 112 },
					{ 0, 7 },
					{ 0, 113 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 23 },
					{ 0, 100 },
					{ 2, 1 },
					{ 0, 70 },
					{ 0, 114 },
					{ 10, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 39 },
					{ 2, 1 },
					{ 0, 85 },
					{ 0, 115 },
					{ 2, 1 },
					{ 0, 55 },
					{ 0, 86 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 101 },
					{ 0, 116 },
					{ 2, 1 },
					{ 0, 71 },
					{ 0, 102 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 117 },
					{ 0, 87 },
					{ 2, 1 },
					{ 0, 118 },
					{ 2, 1 },
					{ 0, 103 },
					{ 0, 119 }
				},
				new byte[511, 2]
				{
					{ 2, 1 },
					{ 0, 0 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 16 },
					{ 2, 1 },
					{ 0, 1 },
					{ 0, 17 },
					{ 28, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 32 },
					{ 0, 2 },
					{ 2, 1 },
					{ 0, 33 },
					{ 0, 18 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 34 },
					{ 0, 48 },
					{ 2, 1 },
					{ 0, 3 },
					{ 0, 49 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 19 },
					{ 2, 1 },
					{ 0, 50 },
					{ 0, 35 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 64 },
					{ 0, 4 },
					{ 0, 65 },
					{ 70, 1 },
					{ 28, 1 },
					{ 14, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 20 },
					{ 2, 1 },
					{ 0, 51 },
					{ 0, 66 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 36 },
					{ 0, 80 },
					{ 2, 1 },
					{ 0, 67 },
					{ 0, 52 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 81 },
					{ 0, 21 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 5 },
					{ 0, 82 },
					{ 2, 1 },
					{ 0, 37 },
					{ 2, 1 },
					{ 0, 68 },
					{ 0, 83 },
					{ 14, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 96 },
					{ 0, 6 },
					{ 2, 1 },
					{ 0, 97 },
					{ 0, 22 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 128 },
					{ 0, 8 },
					{ 0, 129 },
					{ 16, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 53 },
					{ 0, 98 },
					{ 2, 1 },
					{ 0, 38 },
					{ 0, 84 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 69 },
					{ 0, 99 },
					{ 2, 1 },
					{ 0, 54 },
					{ 0, 112 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 7 },
					{ 0, 85 },
					{ 0, 113 },
					{ 2, 1 },
					{ 0, 23 },
					{ 2, 1 },
					{ 0, 39 },
					{ 0, 55 },
					{ 72, 1 },
					{ 24, 1 },
					{ 12, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 24 },
					{ 0, 130 },
					{ 2, 1 },
					{ 0, 40 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 100 },
					{ 0, 70 },
					{ 0, 114 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 132 },
					{ 0, 72 },
					{ 2, 1 },
					{ 0, 144 },
					{ 0, 9 },
					{ 2, 1 },
					{ 0, 145 },
					{ 0, 25 },
					{ 24, 1 },
					{ 14, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 115 },
					{ 0, 101 },
					{ 2, 1 },
					{ 0, 86 },
					{ 0, 116 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 71 },
					{ 0, 102 },
					{ 0, 131 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 56 },
					{ 2, 1 },
					{ 0, 117 },
					{ 0, 87 },
					{ 2, 1 },
					{ 0, 146 },
					{ 0, 41 },
					{ 14, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 103 },
					{ 0, 133 },
					{ 2, 1 },
					{ 0, 88 },
					{ 0, 57 },
					{ 2, 1 },
					{ 0, 147 },
					{ 2, 1 },
					{ 0, 73 },
					{ 0, 134 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 160 },
					{ 2, 1 },
					{ 0, 104 },
					{ 0, 10 },
					{ 2, 1 },
					{ 0, 161 },
					{ 0, 26 },
					{ 68, 1 },
					{ 24, 1 },
					{ 12, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 162 },
					{ 0, 42 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 149 },
					{ 0, 89 },
					{ 2, 1 },
					{ 0, 163 },
					{ 0, 58 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 74 },
					{ 0, 150 },
					{ 2, 1 },
					{ 0, 176 },
					{ 0, 11 },
					{ 2, 1 },
					{ 0, 177 },
					{ 0, 27 },
					{ 20, 1 },
					{ 8, 1 },
					{ 2, 1 },
					{ 0, 178 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 118 },
					{ 0, 119 },
					{ 0, 148 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 135 },
					{ 0, 120 },
					{ 0, 164 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 105 },
					{ 0, 165 },
					{ 0, 43 },
					{ 12, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 90 },
					{ 0, 136 },
					{ 0, 179 },
					{ 2, 1 },
					{ 0, 59 },
					{ 2, 1 },
					{ 0, 121 },
					{ 0, 166 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 106 },
					{ 0, 180 },
					{ 0, 192 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 12 },
					{ 0, 152 },
					{ 0, 193 },
					{ 60, 1 },
					{ 22, 1 },
					{ 10, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 28 },
					{ 2, 1 },
					{ 0, 137 },
					{ 0, 181 },
					{ 2, 1 },
					{ 0, 91 },
					{ 0, 194 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 44 },
					{ 0, 60 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 182 },
					{ 0, 107 },
					{ 2, 1 },
					{ 0, 196 },
					{ 0, 76 },
					{ 16, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 168 },
					{ 0, 138 },
					{ 2, 1 },
					{ 0, 208 },
					{ 0, 13 },
					{ 2, 1 },
					{ 0, 209 },
					{ 2, 1 },
					{ 0, 75 },
					{ 2, 1 },
					{ 0, 151 },
					{ 0, 167 },
					{ 12, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 195 },
					{ 2, 1 },
					{ 0, 122 },
					{ 0, 153 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 197 },
					{ 0, 92 },
					{ 0, 183 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 29 },
					{ 0, 210 },
					{ 2, 1 },
					{ 0, 45 },
					{ 2, 1 },
					{ 0, 123 },
					{ 0, 211 },
					{ 52, 1 },
					{ 28, 1 },
					{ 12, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 61 },
					{ 0, 198 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 108 },
					{ 0, 169 },
					{ 2, 1 },
					{ 0, 154 },
					{ 0, 212 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 184 },
					{ 0, 139 },
					{ 2, 1 },
					{ 0, 77 },
					{ 0, 199 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 124 },
					{ 0, 213 },
					{ 2, 1 },
					{ 0, 93 },
					{ 0, 224 },
					{ 10, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 225 },
					{ 0, 30 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 14 },
					{ 0, 46 },
					{ 0, 226 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 227 },
					{ 0, 109 },
					{ 2, 1 },
					{ 0, 140 },
					{ 0, 228 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 229 },
					{ 0, 186 },
					{ 0, 240 },
					{ 38, 1 },
					{ 16, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 241 },
					{ 0, 31 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 170 },
					{ 0, 155 },
					{ 0, 185 },
					{ 2, 1 },
					{ 0, 62 },
					{ 2, 1 },
					{ 0, 214 },
					{ 0, 200 },
					{ 12, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 78 },
					{ 2, 1 },
					{ 0, 215 },
					{ 0, 125 },
					{ 2, 1 },
					{ 0, 171 },
					{ 2, 1 },
					{ 0, 94 },
					{ 0, 201 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 15 },
					{ 2, 1 },
					{ 0, 156 },
					{ 0, 110 },
					{ 2, 1 },
					{ 0, 242 },
					{ 0, 47 },
					{ 32, 1 },
					{ 16, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 216 },
					{ 0, 141 },
					{ 0, 63 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 243 },
					{ 2, 1 },
					{ 0, 230 },
					{ 0, 202 },
					{ 2, 1 },
					{ 0, 244 },
					{ 0, 79 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 187 },
					{ 0, 172 },
					{ 2, 1 },
					{ 0, 231 },
					{ 0, 245 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 217 },
					{ 0, 157 },
					{ 2, 1 },
					{ 0, 95 },
					{ 0, 232 },
					{ 30, 1 },
					{ 12, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 111 },
					{ 2, 1 },
					{ 0, 246 },
					{ 0, 203 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 188 },
					{ 0, 173 },
					{ 0, 218 },
					{ 8, 1 },
					{ 2, 1 },
					{ 0, 247 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 126 },
					{ 0, 127 },
					{ 0, 142 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 158 },
					{ 0, 174 },
					{ 0, 204 },
					{ 2, 1 },
					{ 0, 248 },
					{ 0, 143 },
					{ 18, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 219 },
					{ 0, 189 },
					{ 2, 1 },
					{ 0, 234 },
					{ 0, 249 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 159 },
					{ 0, 235 },
					{ 2, 1 },
					{ 0, 190 },
					{ 2, 1 },
					{ 0, 205 },
					{ 0, 250 },
					{ 14, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 221 },
					{ 0, 236 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 233 },
					{ 0, 175 },
					{ 0, 220 },
					{ 2, 1 },
					{ 0, 206 },
					{ 0, 251 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 191 },
					{ 0, 222 },
					{ 2, 1 },
					{ 0, 207 },
					{ 0, 238 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 223 },
					{ 0, 239 },
					{ 2, 1 },
					{ 0, 255 },
					{ 2, 1 },
					{ 0, 237 },
					{ 2, 1 },
					{ 0, 253 },
					{ 2, 1 },
					{ 0, 252 },
					{ 0, 254 }
				},
				new byte[511, 2]
				{
					{ 16, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 0 },
					{ 2, 1 },
					{ 0, 16 },
					{ 0, 1 },
					{ 2, 1 },
					{ 0, 17 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 32 },
					{ 0, 2 },
					{ 2, 1 },
					{ 0, 33 },
					{ 0, 18 },
					{ 50, 1 },
					{ 16, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 34 },
					{ 2, 1 },
					{ 0, 48 },
					{ 0, 49 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 19 },
					{ 2, 1 },
					{ 0, 3 },
					{ 0, 64 },
					{ 2, 1 },
					{ 0, 50 },
					{ 0, 35 },
					{ 14, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 4 },
					{ 0, 20 },
					{ 0, 65 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 51 },
					{ 0, 66 },
					{ 2, 1 },
					{ 0, 36 },
					{ 0, 67 },
					{ 10, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 52 },
					{ 2, 1 },
					{ 0, 80 },
					{ 0, 5 },
					{ 2, 1 },
					{ 0, 81 },
					{ 0, 21 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 82 },
					{ 0, 37 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 68 },
					{ 0, 83 },
					{ 0, 97 },
					{ 90, 1 },
					{ 36, 1 },
					{ 18, 1 },
					{ 10, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 53 },
					{ 2, 1 },
					{ 0, 96 },
					{ 0, 6 },
					{ 2, 1 },
					{ 0, 22 },
					{ 0, 98 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 38 },
					{ 0, 84 },
					{ 2, 1 },
					{ 0, 69 },
					{ 0, 99 },
					{ 10, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 54 },
					{ 2, 1 },
					{ 0, 112 },
					{ 0, 7 },
					{ 2, 1 },
					{ 0, 113 },
					{ 0, 85 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 23 },
					{ 0, 100 },
					{ 2, 1 },
					{ 0, 114 },
					{ 0, 39 },
					{ 24, 1 },
					{ 16, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 70 },
					{ 0, 115 },
					{ 2, 1 },
					{ 0, 55 },
					{ 0, 101 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 86 },
					{ 0, 128 },
					{ 2, 1 },
					{ 0, 8 },
					{ 0, 116 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 129 },
					{ 0, 24 },
					{ 2, 1 },
					{ 0, 130 },
					{ 0, 40 },
					{ 16, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 71 },
					{ 0, 102 },
					{ 2, 1 },
					{ 0, 131 },
					{ 0, 56 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 117 },
					{ 0, 87 },
					{ 2, 1 },
					{ 0, 132 },
					{ 0, 72 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 144 },
					{ 0, 25 },
					{ 0, 145 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 146 },
					{ 0, 118 },
					{ 2, 1 },
					{ 0, 103 },
					{ 0, 41 },
					{ 92, 1 },
					{ 36, 1 },
					{ 18, 1 },
					{ 10, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 133 },
					{ 0, 88 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 9 },
					{ 0, 119 },
					{ 0, 147 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 57 },
					{ 0, 148 },
					{ 2, 1 },
					{ 0, 73 },
					{ 0, 134 },
					{ 10, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 104 },
					{ 2, 1 },
					{ 0, 160 },
					{ 0, 10 },
					{ 2, 1 },
					{ 0, 161 },
					{ 0, 26 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 162 },
					{ 0, 42 },
					{ 2, 1 },
					{ 0, 149 },
					{ 0, 89 },
					{ 26, 1 },
					{ 14, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 163 },
					{ 2, 1 },
					{ 0, 58 },
					{ 0, 135 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 120 },
					{ 0, 164 },
					{ 2, 1 },
					{ 0, 74 },
					{ 0, 150 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 105 },
					{ 0, 176 },
					{ 0, 177 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 27 },
					{ 0, 165 },
					{ 0, 178 },
					{ 14, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 90 },
					{ 0, 43 },
					{ 2, 1 },
					{ 0, 136 },
					{ 0, 151 },
					{ 2, 1 },
					{ 0, 179 },
					{ 2, 1 },
					{ 0, 121 },
					{ 0, 59 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 106 },
					{ 0, 180 },
					{ 2, 1 },
					{ 0, 75 },
					{ 0, 193 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 152 },
					{ 0, 137 },
					{ 2, 1 },
					{ 0, 28 },
					{ 0, 181 },
					{ 80, 1 },
					{ 34, 1 },
					{ 16, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 91 },
					{ 0, 44 },
					{ 0, 194 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 11 },
					{ 0, 192 },
					{ 0, 166 },
					{ 2, 1 },
					{ 0, 167 },
					{ 0, 122 },
					{ 10, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 195 },
					{ 0, 60 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 12 },
					{ 0, 153 },
					{ 0, 182 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 107 },
					{ 0, 196 },
					{ 2, 1 },
					{ 0, 76 },
					{ 0, 168 },
					{ 20, 1 },
					{ 10, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 138 },
					{ 0, 197 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 208 },
					{ 0, 92 },
					{ 0, 209 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 183 },
					{ 0, 123 },
					{ 2, 1 },
					{ 0, 29 },
					{ 2, 1 },
					{ 0, 13 },
					{ 0, 45 },
					{ 12, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 210 },
					{ 0, 211 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 61 },
					{ 0, 198 },
					{ 2, 1 },
					{ 0, 108 },
					{ 0, 169 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 154 },
					{ 0, 184 },
					{ 0, 212 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 139 },
					{ 0, 77 },
					{ 2, 1 },
					{ 0, 199 },
					{ 0, 124 },
					{ 68, 1 },
					{ 34, 1 },
					{ 18, 1 },
					{ 10, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 213 },
					{ 0, 93 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 224 },
					{ 0, 14 },
					{ 0, 225 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 30 },
					{ 0, 226 },
					{ 2, 1 },
					{ 0, 170 },
					{ 0, 46 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 185 },
					{ 0, 155 },
					{ 2, 1 },
					{ 0, 227 },
					{ 0, 214 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 109 },
					{ 0, 62 },
					{ 2, 1 },
					{ 0, 200 },
					{ 0, 140 },
					{ 16, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 228 },
					{ 0, 78 },
					{ 2, 1 },
					{ 0, 215 },
					{ 0, 125 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 229 },
					{ 0, 186 },
					{ 2, 1 },
					{ 0, 171 },
					{ 0, 94 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 201 },
					{ 0, 156 },
					{ 2, 1 },
					{ 0, 241 },
					{ 0, 31 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 240 },
					{ 0, 110 },
					{ 0, 242 },
					{ 2, 1 },
					{ 0, 47 },
					{ 0, 230 },
					{ 38, 1 },
					{ 18, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 216 },
					{ 0, 243 },
					{ 2, 1 },
					{ 0, 63 },
					{ 0, 244 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 79 },
					{ 2, 1 },
					{ 0, 141 },
					{ 0, 217 },
					{ 2, 1 },
					{ 0, 187 },
					{ 0, 202 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 172 },
					{ 0, 231 },
					{ 2, 1 },
					{ 0, 126 },
					{ 0, 245 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 157 },
					{ 0, 95 },
					{ 2, 1 },
					{ 0, 232 },
					{ 0, 142 },
					{ 2, 1 },
					{ 0, 246 },
					{ 0, 203 },
					{ 34, 1 },
					{ 18, 1 },
					{ 10, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 15 },
					{ 0, 174 },
					{ 0, 111 },
					{ 2, 1 },
					{ 0, 188 },
					{ 0, 218 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 173 },
					{ 0, 247 },
					{ 2, 1 },
					{ 0, 127 },
					{ 0, 233 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 158 },
					{ 0, 204 },
					{ 2, 1 },
					{ 0, 248 },
					{ 0, 143 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 219 },
					{ 0, 189 },
					{ 2, 1 },
					{ 0, 234 },
					{ 0, 249 },
					{ 16, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 159 },
					{ 0, 220 },
					{ 2, 1 },
					{ 0, 205 },
					{ 0, 235 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 190 },
					{ 0, 250 },
					{ 2, 1 },
					{ 0, 175 },
					{ 0, 221 },
					{ 14, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 236 },
					{ 0, 206 },
					{ 0, 251 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 191 },
					{ 0, 237 },
					{ 2, 1 },
					{ 0, 222 },
					{ 0, 252 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 207 },
					{ 0, 253 },
					{ 0, 238 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 223 },
					{ 0, 254 },
					{ 2, 1 },
					{ 0, 239 },
					{ 0, 255 }
				},
				new byte[511, 2]
				{
					{ 2, 1 },
					{ 0, 0 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 16 },
					{ 2, 1 },
					{ 0, 1 },
					{ 0, 17 },
					{ 42, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 32 },
					{ 0, 2 },
					{ 2, 1 },
					{ 0, 33 },
					{ 0, 18 },
					{ 10, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 34 },
					{ 2, 1 },
					{ 0, 48 },
					{ 0, 3 },
					{ 2, 1 },
					{ 0, 49 },
					{ 0, 19 },
					{ 10, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 50 },
					{ 0, 35 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 64 },
					{ 0, 4 },
					{ 0, 65 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 20 },
					{ 2, 1 },
					{ 0, 51 },
					{ 0, 66 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 36 },
					{ 0, 80 },
					{ 2, 1 },
					{ 0, 67 },
					{ 0, 52 },
					{ 138, 1 },
					{ 40, 1 },
					{ 16, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 5 },
					{ 0, 21 },
					{ 0, 81 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 82 },
					{ 0, 37 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 68 },
					{ 0, 53 },
					{ 0, 83 },
					{ 10, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 96 },
					{ 0, 6 },
					{ 0, 97 },
					{ 2, 1 },
					{ 0, 22 },
					{ 0, 98 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 38 },
					{ 0, 84 },
					{ 2, 1 },
					{ 0, 69 },
					{ 0, 99 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 54 },
					{ 0, 112 },
					{ 0, 113 },
					{ 40, 1 },
					{ 18, 1 },
					{ 8, 1 },
					{ 2, 1 },
					{ 0, 23 },
					{ 2, 1 },
					{ 0, 7 },
					{ 2, 1 },
					{ 0, 85 },
					{ 0, 100 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 114 },
					{ 0, 39 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 70 },
					{ 0, 101 },
					{ 0, 115 },
					{ 10, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 55 },
					{ 2, 1 },
					{ 0, 86 },
					{ 0, 8 },
					{ 2, 1 },
					{ 0, 128 },
					{ 0, 129 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 24 },
					{ 2, 1 },
					{ 0, 116 },
					{ 0, 71 },
					{ 2, 1 },
					{ 0, 130 },
					{ 2, 1 },
					{ 0, 40 },
					{ 0, 102 },
					{ 24, 1 },
					{ 14, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 131 },
					{ 0, 56 },
					{ 2, 1 },
					{ 0, 117 },
					{ 0, 132 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 72 },
					{ 0, 144 },
					{ 0, 145 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 25 },
					{ 2, 1 },
					{ 0, 9 },
					{ 0, 118 },
					{ 2, 1 },
					{ 0, 146 },
					{ 0, 41 },
					{ 14, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 133 },
					{ 0, 88 },
					{ 2, 1 },
					{ 0, 147 },
					{ 0, 57 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 160 },
					{ 0, 10 },
					{ 0, 26 },
					{ 8, 1 },
					{ 2, 1 },
					{ 0, 162 },
					{ 2, 1 },
					{ 0, 103 },
					{ 2, 1 },
					{ 0, 87 },
					{ 0, 73 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 148 },
					{ 2, 1 },
					{ 0, 119 },
					{ 0, 134 },
					{ 2, 1 },
					{ 0, 161 },
					{ 2, 1 },
					{ 0, 104 },
					{ 0, 149 },
					{ 220, 1 },
					{ 126, 1 },
					{ 50, 1 },
					{ 26, 1 },
					{ 12, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 42 },
					{ 2, 1 },
					{ 0, 89 },
					{ 0, 58 },
					{ 2, 1 },
					{ 0, 163 },
					{ 2, 1 },
					{ 0, 135 },
					{ 0, 120 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 164 },
					{ 0, 74 },
					{ 2, 1 },
					{ 0, 150 },
					{ 0, 105 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 176 },
					{ 0, 11 },
					{ 0, 177 },
					{ 10, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 27 },
					{ 0, 178 },
					{ 2, 1 },
					{ 0, 43 },
					{ 2, 1 },
					{ 0, 165 },
					{ 0, 90 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 179 },
					{ 2, 1 },
					{ 0, 166 },
					{ 0, 106 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 180 },
					{ 0, 75 },
					{ 2, 1 },
					{ 0, 12 },
					{ 0, 193 },
					{ 30, 1 },
					{ 14, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 181 },
					{ 0, 194 },
					{ 0, 44 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 167 },
					{ 0, 195 },
					{ 2, 1 },
					{ 0, 107 },
					{ 0, 196 },
					{ 8, 1 },
					{ 2, 1 },
					{ 0, 29 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 136 },
					{ 0, 151 },
					{ 0, 59 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 209 },
					{ 0, 210 },
					{ 2, 1 },
					{ 0, 45 },
					{ 0, 211 },
					{ 18, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 30 },
					{ 0, 46 },
					{ 0, 226 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 121 },
					{ 0, 152 },
					{ 0, 192 },
					{ 2, 1 },
					{ 0, 28 },
					{ 2, 1 },
					{ 0, 137 },
					{ 0, 91 },
					{ 14, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 60 },
					{ 2, 1 },
					{ 0, 122 },
					{ 0, 182 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 76 },
					{ 0, 153 },
					{ 2, 1 },
					{ 0, 168 },
					{ 0, 138 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 13 },
					{ 2, 1 },
					{ 0, 197 },
					{ 0, 92 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 61 },
					{ 0, 198 },
					{ 2, 1 },
					{ 0, 108 },
					{ 0, 154 },
					{ 88, 1 },
					{ 86, 1 },
					{ 36, 1 },
					{ 16, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 139 },
					{ 0, 77 },
					{ 2, 1 },
					{ 0, 199 },
					{ 0, 124 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 213 },
					{ 0, 93 },
					{ 2, 1 },
					{ 0, 224 },
					{ 0, 14 },
					{ 8, 1 },
					{ 2, 1 },
					{ 0, 227 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 208 },
					{ 0, 183 },
					{ 0, 123 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 169 },
					{ 0, 184 },
					{ 0, 212 },
					{ 2, 1 },
					{ 0, 225 },
					{ 2, 1 },
					{ 0, 170 },
					{ 0, 185 },
					{ 24, 1 },
					{ 10, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 155 },
					{ 0, 214 },
					{ 0, 109 },
					{ 2, 1 },
					{ 0, 62 },
					{ 0, 200 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 140 },
					{ 0, 228 },
					{ 0, 78 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 215 },
					{ 0, 229 },
					{ 2, 1 },
					{ 0, 186 },
					{ 0, 171 },
					{ 12, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 156 },
					{ 0, 230 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 110 },
					{ 0, 216 },
					{ 2, 1 },
					{ 0, 141 },
					{ 0, 187 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 231 },
					{ 0, 157 },
					{ 2, 1 },
					{ 0, 232 },
					{ 0, 142 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 203 },
					{ 0, 188 },
					{ 0, 158 },
					{ 0, 241 },
					{ 2, 1 },
					{ 0, 31 },
					{ 2, 1 },
					{ 0, 15 },
					{ 0, 47 },
					{ 66, 1 },
					{ 56, 1 },
					{ 2, 1 },
					{ 0, 242 },
					{ 52, 1 },
					{ 50, 1 },
					{ 20, 1 },
					{ 8, 1 },
					{ 2, 1 },
					{ 0, 189 },
					{ 2, 1 },
					{ 0, 94 },
					{ 2, 1 },
					{ 0, 125 },
					{ 0, 201 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 202 },
					{ 2, 1 },
					{ 0, 172 },
					{ 0, 126 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 218 },
					{ 0, 173 },
					{ 0, 204 },
					{ 10, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 174 },
					{ 2, 1 },
					{ 0, 219 },
					{ 0, 220 },
					{ 2, 1 },
					{ 0, 205 },
					{ 0, 190 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 235 },
					{ 0, 237 },
					{ 0, 238 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 217 },
					{ 0, 234 },
					{ 0, 233 },
					{ 2, 1 },
					{ 0, 222 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 221 },
					{ 0, 236 },
					{ 0, 206 },
					{ 0, 63 },
					{ 0, 240 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 243 },
					{ 0, 244 },
					{ 2, 1 },
					{ 0, 79 },
					{ 2, 1 },
					{ 0, 245 },
					{ 0, 95 },
					{ 10, 1 },
					{ 2, 1 },
					{ 0, 255 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 246 },
					{ 0, 111 },
					{ 2, 1 },
					{ 0, 247 },
					{ 0, 127 },
					{ 12, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 143 },
					{ 2, 1 },
					{ 0, 248 },
					{ 0, 249 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 159 },
					{ 0, 250 },
					{ 0, 175 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 251 },
					{ 0, 191 },
					{ 2, 1 },
					{ 0, 252 },
					{ 0, 207 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 253 },
					{ 0, 223 },
					{ 2, 1 },
					{ 0, 254 },
					{ 0, 239 }
				},
				new byte[512, 2]
				{
					{ 60, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 0 },
					{ 0, 16 },
					{ 2, 1 },
					{ 0, 1 },
					{ 0, 17 },
					{ 14, 1 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 32 },
					{ 0, 2 },
					{ 0, 33 },
					{ 2, 1 },
					{ 0, 18 },
					{ 2, 1 },
					{ 0, 34 },
					{ 2, 1 },
					{ 0, 48 },
					{ 0, 3 },
					{ 14, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 49 },
					{ 0, 19 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 50 },
					{ 0, 35 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 64 },
					{ 0, 4 },
					{ 0, 65 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 20 },
					{ 0, 51 },
					{ 2, 1 },
					{ 0, 66 },
					{ 0, 36 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 67 },
					{ 0, 52 },
					{ 0, 81 },
					{ 6, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 80 },
					{ 0, 5 },
					{ 0, 21 },
					{ 2, 1 },
					{ 0, 82 },
					{ 0, 37 },
					{ 250, 1 },
					{ 98, 1 },
					{ 34, 1 },
					{ 18, 1 },
					{ 10, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 68 },
					{ 0, 83 },
					{ 2, 1 },
					{ 0, 53 },
					{ 2, 1 },
					{ 0, 96 },
					{ 0, 6 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 97 },
					{ 0, 22 },
					{ 2, 1 },
					{ 0, 98 },
					{ 0, 38 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 84 },
					{ 0, 69 },
					{ 2, 1 },
					{ 0, 99 },
					{ 0, 54 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 113 },
					{ 0, 85 },
					{ 2, 1 },
					{ 0, 100 },
					{ 0, 70 },
					{ 32, 1 },
					{ 14, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 114 },
					{ 2, 1 },
					{ 0, 39 },
					{ 0, 55 },
					{ 2, 1 },
					{ 0, 115 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 112 },
					{ 0, 7 },
					{ 0, 23 },
					{ 10, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 101 },
					{ 0, 86 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 128 },
					{ 0, 8 },
					{ 0, 129 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 116 },
					{ 0, 71 },
					{ 2, 1 },
					{ 0, 24 },
					{ 0, 130 },
					{ 16, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 40 },
					{ 0, 102 },
					{ 2, 1 },
					{ 0, 131 },
					{ 0, 56 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 117 },
					{ 0, 87 },
					{ 2, 1 },
					{ 0, 132 },
					{ 0, 72 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 145 },
					{ 0, 25 },
					{ 2, 1 },
					{ 0, 146 },
					{ 0, 118 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 103 },
					{ 0, 41 },
					{ 2, 1 },
					{ 0, 133 },
					{ 0, 88 },
					{ 92, 1 },
					{ 34, 1 },
					{ 16, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 147 },
					{ 0, 57 },
					{ 2, 1 },
					{ 0, 148 },
					{ 0, 73 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 119 },
					{ 0, 134 },
					{ 2, 1 },
					{ 0, 104 },
					{ 0, 161 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 162 },
					{ 0, 42 },
					{ 2, 1 },
					{ 0, 149 },
					{ 0, 89 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 163 },
					{ 0, 58 },
					{ 2, 1 },
					{ 0, 135 },
					{ 2, 1 },
					{ 0, 120 },
					{ 0, 74 },
					{ 22, 1 },
					{ 12, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 164 },
					{ 0, 150 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 105 },
					{ 0, 177 },
					{ 2, 1 },
					{ 0, 27 },
					{ 0, 165 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 178 },
					{ 2, 1 },
					{ 0, 90 },
					{ 0, 43 },
					{ 2, 1 },
					{ 0, 136 },
					{ 0, 179 },
					{ 16, 1 },
					{ 10, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 144 },
					{ 2, 1 },
					{ 0, 9 },
					{ 0, 160 },
					{ 2, 1 },
					{ 0, 151 },
					{ 0, 121 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 166 },
					{ 0, 106 },
					{ 0, 180 },
					{ 12, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 26 },
					{ 2, 1 },
					{ 0, 10 },
					{ 0, 176 },
					{ 2, 1 },
					{ 0, 59 },
					{ 2, 1 },
					{ 0, 11 },
					{ 0, 192 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 75 },
					{ 0, 193 },
					{ 2, 1 },
					{ 0, 152 },
					{ 0, 137 },
					{ 67, 1 },
					{ 34, 1 },
					{ 16, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 28 },
					{ 0, 181 },
					{ 2, 1 },
					{ 0, 91 },
					{ 0, 194 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 44 },
					{ 0, 167 },
					{ 2, 1 },
					{ 0, 122 },
					{ 0, 195 },
					{ 10, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 60 },
					{ 2, 1 },
					{ 0, 12 },
					{ 0, 208 },
					{ 2, 1 },
					{ 0, 182 },
					{ 0, 107 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 196 },
					{ 0, 76 },
					{ 2, 1 },
					{ 0, 153 },
					{ 0, 168 },
					{ 16, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 138 },
					{ 0, 197 },
					{ 2, 1 },
					{ 0, 92 },
					{ 0, 209 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 183 },
					{ 0, 123 },
					{ 2, 1 },
					{ 0, 29 },
					{ 0, 210 },
					{ 9, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 45 },
					{ 0, 211 },
					{ 2, 1 },
					{ 0, 61 },
					{ 0, 198 },
					{ 85, 250 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 108 },
					{ 0, 169 },
					{ 2, 1 },
					{ 0, 154 },
					{ 0, 212 },
					{ 32, 1 },
					{ 16, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 184 },
					{ 0, 139 },
					{ 2, 1 },
					{ 0, 77 },
					{ 0, 199 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 124 },
					{ 0, 213 },
					{ 2, 1 },
					{ 0, 93 },
					{ 0, 225 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 30 },
					{ 0, 226 },
					{ 2, 1 },
					{ 0, 170 },
					{ 0, 185 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 155 },
					{ 0, 227 },
					{ 2, 1 },
					{ 0, 214 },
					{ 0, 109 },
					{ 20, 1 },
					{ 10, 1 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 62 },
					{ 2, 1 },
					{ 0, 46 },
					{ 0, 78 },
					{ 2, 1 },
					{ 0, 200 },
					{ 0, 140 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 228 },
					{ 0, 215 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 125 },
					{ 0, 171 },
					{ 0, 229 },
					{ 10, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 186 },
					{ 0, 94 },
					{ 2, 1 },
					{ 0, 201 },
					{ 2, 1 },
					{ 0, 156 },
					{ 0, 110 },
					{ 8, 1 },
					{ 2, 1 },
					{ 0, 230 },
					{ 2, 1 },
					{ 0, 13 },
					{ 2, 1 },
					{ 0, 224 },
					{ 0, 14 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 216 },
					{ 0, 141 },
					{ 2, 1 },
					{ 0, 187 },
					{ 0, 202 },
					{ 74, 1 },
					{ 2, 1 },
					{ 0, 255 },
					{ 64, 1 },
					{ 58, 1 },
					{ 32, 1 },
					{ 16, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 172 },
					{ 0, 231 },
					{ 2, 1 },
					{ 0, 126 },
					{ 0, 217 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 157 },
					{ 0, 232 },
					{ 2, 1 },
					{ 0, 142 },
					{ 0, 203 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 188 },
					{ 0, 218 },
					{ 2, 1 },
					{ 0, 173 },
					{ 0, 233 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 158 },
					{ 0, 204 },
					{ 2, 1 },
					{ 0, 219 },
					{ 0, 189 },
					{ 16, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 234 },
					{ 0, 174 },
					{ 2, 1 },
					{ 0, 220 },
					{ 0, 205 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 235 },
					{ 0, 190 },
					{ 2, 1 },
					{ 0, 221 },
					{ 0, 236 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 206 },
					{ 0, 237 },
					{ 2, 1 },
					{ 0, 222 },
					{ 0, 238 },
					{ 0, 15 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 240 },
					{ 0, 31 },
					{ 0, 241 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 242 },
					{ 0, 47 },
					{ 2, 1 },
					{ 0, 243 },
					{ 0, 63 },
					{ 18, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 244 },
					{ 0, 79 },
					{ 2, 1 },
					{ 0, 245 },
					{ 0, 95 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 246 },
					{ 0, 111 },
					{ 2, 1 },
					{ 0, 247 },
					{ 2, 1 },
					{ 0, 127 },
					{ 0, 143 },
					{ 10, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 248 },
					{ 0, 249 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 159 },
					{ 0, 175 },
					{ 0, 250 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 251 },
					{ 0, 191 },
					{ 2, 1 },
					{ 0, 252 },
					{ 0, 207 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 253 },
					{ 0, 223 },
					{ 2, 1 },
					{ 0, 254 },
					{ 0, 239 }
				},
				new byte[31, 2]
				{
					{ 2, 1 },
					{ 0, 0 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 8 },
					{ 0, 4 },
					{ 2, 1 },
					{ 0, 1 },
					{ 0, 2 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 12 },
					{ 0, 10 },
					{ 2, 1 },
					{ 0, 3 },
					{ 0, 6 },
					{ 6, 1 },
					{ 2, 1 },
					{ 0, 9 },
					{ 2, 1 },
					{ 0, 5 },
					{ 0, 7 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 14 },
					{ 0, 13 },
					{ 2, 1 },
					{ 0, 15 },
					{ 0, 11 }
				},
				new byte[31, 2]
				{
					{ 16, 1 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 0 },
					{ 0, 1 },
					{ 2, 1 },
					{ 0, 2 },
					{ 0, 3 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 4 },
					{ 0, 5 },
					{ 2, 1 },
					{ 0, 6 },
					{ 0, 7 },
					{ 8, 1 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 8 },
					{ 0, 9 },
					{ 2, 1 },
					{ 0, 10 },
					{ 0, 11 },
					{ 4, 1 },
					{ 2, 1 },
					{ 0, 12 },
					{ 0, 13 },
					{ 2, 1 },
					{ 0, 14 },
					{ 0, 15 }
				}
			};
			_llCache = new HuffmanListNode[_codeTables.Length];
			_llCacheMaxBits = new int[_codeTables.Length];
			LIN_BITS = new int[32]
			{
				0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
				0, 0, 0, 0, 0, 0, 1, 2, 3, 4,
				6, 8, 10, 13, 4, 5, 6, 7, 8, 9,
				11, 13
			};
			_floatLookup = new float[8207];
			for (int i = 0; i < 8207; i++)
			{
				_floatLookup[i] = (float)Math.Pow(i, 1.3333333333333333);
			}
		}

		internal static void Decode(BitReservoir br, int table, out float x, out float y)
		{
			if (table == 0 || table == 4 || table == 14)
			{
				x = (y = 0f);
				return;
			}
			byte num = DecodeSymbol(br, table);
			int num2 = num >> 4;
			int num3 = num & 0xF;
			int num4 = LIN_BITS[table];
			if (num4 > 0 && num2 == 15)
			{
				num2 += br.GetBits(num4);
			}
			if (num2 != 0 && br.Get1Bit() != 0)
			{
				x = 0f - _floatLookup[num2];
			}
			else
			{
				x = _floatLookup[num2];
			}
			if (num4 > 0 && num3 == 15)
			{
				num3 += br.GetBits(num4);
			}
			if (num3 != 0 && br.Get1Bit() != 0)
			{
				y = 0f - _floatLookup[num3];
			}
			else
			{
				y = _floatLookup[num3];
			}
		}

		internal static void Decode(BitReservoir br, int table, out float x, out float y, out float v, out float w)
		{
			byte num = DecodeSymbol(br, table);
			v = (w = (x = (y = 0f)));
			if ((num & 8) != 0)
			{
				if (br.Get1Bit() == 1)
				{
					v = 0f - _floatLookup[1];
				}
				else
				{
					v = _floatLookup[1];
				}
			}
			if ((num & 4) != 0)
			{
				if (br.Get1Bit() == 1)
				{
					w = 0f - _floatLookup[1];
				}
				else
				{
					w = _floatLookup[1];
				}
			}
			if ((num & 2) != 0)
			{
				if (br.Get1Bit() == 1)
				{
					x = 0f - _floatLookup[1];
				}
				else
				{
					x = _floatLookup[1];
				}
			}
			if ((num & 1) != 0)
			{
				if (br.Get1Bit() == 1)
				{
					y = 0f - _floatLookup[1];
				}
				else
				{
					y = _floatLookup[1];
				}
			}
		}

		private static byte DecodeSymbol(BitReservoir br, int table)
		{
			int maxBits;
			HuffmanListNode huffmanListNode = GetNode(table, out maxBits);
			int readCount;
			int num = br.TryPeekBits(maxBits, out readCount);
			if (readCount < maxBits)
			{
				num <<= maxBits - readCount;
			}
			while (huffmanListNode != null && huffmanListNode.Length <= readCount)
			{
				if ((num & huffmanListNode.Mask) == huffmanListNode.Bits)
				{
					br.SkipBits(huffmanListNode.Length);
					break;
				}
				huffmanListNode = huffmanListNode.Next;
			}
			if (huffmanListNode != null && huffmanListNode.Length <= readCount)
			{
				return huffmanListNode.Value;
			}
			return 0;
		}

		private static HuffmanListNode GetNode(int table, out int maxBits)
		{
			int num = table;
			if (num > 16)
			{
				num = ((num > 31) ? (num - 17) : ((num < 24) ? 13 : 14));
			}
			else
			{
				if (num > 13)
				{
					num--;
				}
				if (num > 3)
				{
					num--;
				}
				num--;
			}
			if (_llCache[num] == null)
			{
				_llCache[num] = InitTable(_codeTables[num], out maxBits);
				_llCacheMaxBits[num] = maxBits;
			}
			else
			{
				maxBits = _llCacheMaxBits[num];
			}
			return _llCache[num];
		}

		private static HuffmanListNode InitTable(byte[,] tree, out int maxBits)
		{
			List<byte> list = new List<byte>();
			List<int> list2 = new List<int>();
			List<int> list3 = new List<int>();
			int length = tree.GetLength(0);
			for (int i = 0; i < length; i++)
			{
				if (tree[i, 0] == 0)
				{
					int num = 0;
					int item = 0;
					int num2 = i;
					do
					{
						num2 = FindPreviousNode(tree, num2, out var bit);
						num |= bit << item++;
					}
					while (num2 > 0);
					list.Add(tree[i, 1]);
					list2.Add(item);
					list3.Add(num);
				}
			}
			return BuildLinkedList(list, list2, list3, out maxBits);
		}

		private static int FindPreviousNode(byte[,] tree, int idx, out int bit)
		{
			for (int num = idx - 1; num >= 0; num--)
			{
				if (tree[num, 0] != 0)
				{
					for (int i = 0; i < 2; i++)
					{
						if (num + tree[num, i] != idx)
						{
							continue;
						}
						if (tree[num, i] >= 250)
						{
							int result = FindPreviousNode(tree, num, out bit);
							if (bit != i)
							{
								throw new InvalidOperationException();
							}
							return result;
						}
						bit = i;
						return num;
					}
				}
			}
			throw new InvalidOperationException();
		}

		private static HuffmanListNode BuildLinkedList(List<byte> values, List<int> lengthList, List<int> codeList, out int maxBits)
		{
			HuffmanListNode[] array = new HuffmanListNode[lengthList.Count];
			maxBits = lengthList.Max();
			for (int i = 0; i < array.Length; i++)
			{
				int num = maxBits - lengthList[i];
				array[i] = new HuffmanListNode
				{
					Value = values[i],
					Length = lengthList[i],
					Bits = codeList[i] << num,
					Mask = (1 << lengthList[i]) - 1 << num
				};
			}
			Array.Sort(array, (HuffmanListNode huffmanListNode, HuffmanListNode huffmanListNode2) => huffmanListNode.Length - huffmanListNode2.Length);
			for (int num2 = 1; num2 < array.Length && array[num2].Length < 99999; num2++)
			{
				array[num2 - 1].Next = array[num2];
			}
			return array[0];
		}
	}
	internal class ID3Frame : FrameBase
	{
		private int _version;

		private int _encoderDelay = -1;

		private int _encoderPadding = -1;

		private bool _v2Parsed;

		internal int EncoderDelay
		{
			get
			{
				if (_encoderDelay >= 0)
				{
					return _encoderDelay;
				}
				return 0;
			}
		}

		internal int EncoderPadding
		{
			get
			{
				if (_encoderPadding >= 0)
				{
					return _encoderPadding;
				}
				return 0;
			}
		}

		internal int Version
		{
			get
			{
				if (_version == 0)
				{
					return 1;
				}
				return _version;
			}
		}

		internal static ID3Frame TrySync(uint syncMark)
		{
			if ((syncMark & 0xFFFFFF00u) == 1229206272)
			{
				return new ID3Frame
				{
					_version = 2
				};
			}
			if ((syncMark & 0xFFFFFF00u) == 1413564160)
			{
				if ((syncMark & 0xFF) == 43)
				{
					return new ID3Frame
					{
						_version = 1
					};
				}
				return new ID3Frame
				{
					_version = 0
				};
			}
			return null;
		}

		private ID3Frame()
		{
		}

		protected override int Validate()
		{
			switch (_version)
			{
			case 2:
			{
				byte[] array = new byte[7];
				if (Read(3, array) == 7)
				{
					byte b;
					switch (array[0])
					{
					case 2:
						b = 63;
						break;
					case 3:
						b = 31;
						break;
					case 4:
						b = 15;
						break;
					default:
						return -1;
					}
					int num = (array[3] << 21) | (array[4] << 14) | (array[5] << 7) | array[6];
					if (((array[2] & b) | (array[3] & 0x80) | (array[4] & 0x80) | (array[5] & 0x80) | (array[6] & 0x80)) == 0 && array[1] != byte.MaxValue)
					{
						return num + 10;
					}
				}
				break;
			}
			case 1:
				return 355;
			case 0:
				return 128;
			}
			return -1;
		}

		internal override void Parse()
		{
			switch (_version)
			{
			case 2:
				ParseV2();
				break;
			case 1:
				ParseV1Enh();
				break;
			case 0:
				ParseV1(3);
				break;
			}
		}

		private void ParseV1(int offset)
		{
		}

		private void ParseV1Enh()
		{
			ParseV1(230);
		}

		private void ParseV2()
		{
			_v2Parsed = true;
			_encoderDelay = 0;
			_encoderPadding = 0;
			byte[] array = new byte[7];
			if (Read(3, array) != 7)
			{
				return;
			}
			int num = array[0];
			if (num != 3 && num != 4)
			{
				return;
			}
			int num2 = (array[3] << 21) | (array[4] << 14) | (array[5] << 7) | array[6];
			int i = 10;
			int num3;
			for (byte[] array2 = new byte[10]; i < num2 + 10 && Read(i, array2, 0, 10) >= 10; i += 10 + num3)
			{
				if (array2[0] == 0)
				{
					break;
				}
				num3 = ((num != 4) ? ((array2[4] << 24) | (array2[5] << 16) | (array2[6] << 8) | array2[7]) : ((array2[4] << 21) | (array2[5] << 14) | (array2[6] << 7) | array2[7]));
				if (num3 <= 0)
				{
					break;
				}
				if (array2[0] == 84 && array2[1] == 88 && array2[2] == 88 && array2[3] == 88 && num3 < 4096)
				{
					byte[] array3 = new byte[num3];
					if (Read(i + 10, array3, 0, num3) == num3)
					{
						TryParseITunSMPB(array3, num3);
					}
				}
				if (_encoderDelay > 0 || _encoderPadding > 0)
				{
					break;
				}
			}
		}

		private void TryParseITunSMPB(byte[] data, int length)
		{
			if (length < 2)
			{
				return;
			}
			int num = data[0];
			string text;
			try
			{
				text = ((num == 1 || num == 2) ? Encoding.Unicode : Encoding.UTF8).GetString(data, 1, length - 1);
			}
			catch
			{
				return;
			}
			if (text.Length > 0 && text[0] == '\ufeff')
			{
				text = text.Substring(1);
			}
			int num2 = text.IndexOf('\0');
			if (num2 >= 0 && !(text.Substring(0, num2) != "iTunSMPB"))
			{
				string text2 = text.Substring(num2 + 1).Trim(new char[1]);
				if (text2.Length > 0 && text2[0] == '\ufeff')
				{
					text2 = text2.Substring(1);
				}
				string[] array = text2.Split(new char[1] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
				if (array.Length >= 3 && int.TryParse(array[1], NumberStyles.HexNumber, null, out var result) && int.TryParse(array[2], NumberStyles.HexNumber, null, out var result2))
				{
					_encoderDelay = result;
					_encoderPadding = result2;
				}
			}
		}

		internal void ParseEagerIfNeeded()
		{
			if (_version == 2 && !_v2Parsed)
			{
				ParseV2();
			}
		}

		internal void Merge(ID3Frame newFrame)
		{
		}
	}
	internal abstract class LayerDecoderBase
	{
		protected const int SBLIMIT = 32;

		private const float INV_SQRT_2 = 0.70710677f;

		private static float[] DEWINDOW_TABLE = new float[512]
		{
			0f, -1.5259E-05f, -1.5259E-05f, -1.5259E-05f, -1.5259E-05f, -1.5259E-05f, -1.5259E-05f, -3.0518E-05f, -3.0518E-05f, -3.0518E-05f,
			-3.0518E-05f, -4.5776E-05f, -4.5776E-05f, -6.1035E-05f, -6.1035E-05f, -7.6294E-05f, -7.6294E-05f, -9.1553E-05f, -0.000106812f, -0.000106812f,
			-0.00012207f, -0.000137329f, -0.000152588f, -0.000167847f, -0.000198364f, -0.000213623f, -0.000244141f, -0.000259399f, -0.000289917f, -0.000320435f,
			-0.000366211f, -0.000396729f, -0.000442505f, -0.000473022f, -0.000534058f, -0.000579834f, -0.00062561f, -0.000686646f, -0.000747681f, -0.000808716f,
			-0.00088501f, -0.000961304f, -0.001037598f, -0.001113892f, -0.001205444f, -0.001296997f, -0.00138855f, -0.001480103f, -0.001586914f, -0.001693726f,
			-0.001785278f, -0.001907349f, -0.00201416f, -0.002120972f, -0.002243042f, -0.002349854f, -0.002456665f, -0.002578735f, -0.002685547f, -0.002792358f,
			-0.00289917f, -0.002990723f, -0.003082275f, -0.003173828f, 0.003250122f, 0.003326416f, 0.003387451f, 0.003433228f, 0.003463745f, 0.003479004f,
			0.003479004f, 0.003463745f, 0.003417969f, 0.003372192f, 0.00328064f, 0.003173828f, 0.003051758f, 0.002883911f, 0.002700806f, 0.002487183f,
			0.002227783f, 0.001937866f, 0.001617432f, 0.001266479f, 0.000869751f, 0.000442505f, -3.0518E-05f, -0.000549316f, -0.001098633f, -0.001693726f,
			-0.002334595f, -0.003005981f, -0.003723145f, -0.004486084f, -0.0052948f, -0.006118774f, -0.007003784f, -0.007919312f, -0.008865356f, -0.009841919f,
			-0.010848999f, -0.011886597f, -0.012939453f, -0.014022827f, -0.01512146f, -0.016235352f, -0.017349243f, -0.018463135f, -0.019577026f, -0.020690918f,
			-0.02178955f, -0.022857666f, -0.023910522f, -0.024932861f, -0.025909424f, -0.02684021f, -0.02772522f, -0.028533936f, -0.029281616f, -0.029937744f,
			-0.030532837f, -0.03100586f, -0.03138733f, -0.031661987f, -0.031814575f, -0.031845093f, -0.03173828f, -0.03147888f, 0.031082153f, 0.030517578f,
			0.029785156f, 0.028884888f, 0.027801514f, 0.026535034f, 0.02508545f, 0.023422241f, 0.021575928f, 0.01953125f, 0.01725769f, 0.014801025f,
			0.012115479f, 0.009231567f, 0.006134033f, 0.002822876f, -0.000686646f, -0.004394531f, -0.00831604f, -0.012420654f, -0.016708374f, -0.0211792f,
			-0.025817871f, -0.03060913f, -0.03555298f, -0.040634155f, -0.045837402f, -0.051132202f, -0.056533813f, -0.06199646f, -0.06752014f, -0.07305908f,
			-0.07862854f, -0.08418274f, -0.08970642f, -0.09516907f, -0.10054016f, -0.1058197f, -0.110946655f, -0.11592102f, -0.12069702f, -0.1252594f,
			-0.12956238f, -0.1335907f, -0.13729858f, -0.14067078f, -0.14367676f, -0.1462555f, -0.14842224f, -0.15011597f, -0.15130615f, -0.15196228f,
			-0.15206909f, -0.15159607f, -0.15049744f, -0.1487732f, -0.1463623f, -0.14326477f, -0.13945007f, -0.1348877f, -0.12957764f, -0.12347412f,
			-0.11657715f, -0.1088562f, 0.10031128f, 0.090927124f, 0.08068848f, 0.06959534f, 0.057617188f, 0.044784546f, 0.031082153f, 0.01651001f,
			0.001068115f, -0.015228271f, -0.03237915f, -0.050354004f, -0.06916809f, -0.088775635f, -0.10916138f, -0.13031006f, -0.15220642f, -0.17478943f,
			-0.19805908f, -0.22198486f, -0.24650574f, -0.2715912f, -0.2972107f, -0.32331848f, -0.34986877f, -0.37680054f, -0.40408325f, -0.43165588f,
			-0.45947266f, -0.48747253f, -0.51560974f, -0.54382324f, -0.57203674f, -0.6002197f, -0.6282959f, -0.6562195f, -0.6839142f, -0.71131897f,
			-0.7383728f, -0.7650299f, -0.791214f, -0.816864f, -0.84194946f, -0.8663635f, -0.89009094f, -0.9130554f, -0.9351959f, -0.95648193f,
			-0.9768524f, -0.99624634f, -1.0146179f, -1.0319366f, -1.0481567f, -1.0632172f, -1.0771179f, -1.0897827f, -1.1012115f, -1.1113739f,
			-1.120224f, -1.1277466f, -1.1339264f, -1.1387634f, -1.1422119f, -1.1442871f, 1.144989f, 1.1442871f, 1.1422119f, 1.1387634f,
			1.1339264f, 1.1277466f, 1.120224f, 1.1113739f, 1.1012115f, 1.0897827f, 1.0771179f, 1.0632172f, 1.0481567f, 1.0319366f,
			1.0146179f, 0.99624634f, 0.9768524f, 0.95648193f, 0.9351959f, 0.9130554f, 0.89009094f, 0.8663635f, 0.84194946f, 0.816864f,
			0.791214f, 0.7650299f, 0.7383728f, 0.71131897f, 0.6839142f, 0.6562195f, 0.6282959f, 0.6002197f, 0.57203674f, 0.54382324f,
			0.51560974f, 0.48747253f, 0.45947266f, 0.43165588f, 0.40408325f, 0.37680054f, 0.34986877f, 0.32331848f, 0.2972107f, 0.2715912f,
			0.24650574f, 0.22198486f, 0.19805908f, 0.17478943f, 0.15220642f, 0.13031006f, 0.10916138f, 0.088775635f, 0.06916809f, 0.050354004f,
			0.03237915f, 0.015228271f, -0.001068115f, -0.01651001f, -0.031082153f, -0.044784546f, -0.057617188f, -0.06959534f, -0.08068848f, -0.090927124f,
			0.10031128f, 0.1088562f, 0.11657715f, 0.12347412f, 0.12957764f, 0.1348877f, 0.13945007f, 0.14326477f, 0.1463623f, 0.1487732f,
			0.15049744f, 0.15159607f, 0.15206909f, 0.15196228f, 0.15130615f, 0.15011597f, 0.14842224f, 0.1462555f, 0.14367676f, 0.14067078f,
			0.13729858f, 0.1335907f, 0.12956238f, 0.1252594f, 0.12069702f, 0.11592102f, 0.110946655f, 0.1058197f, 0.10054016f, 0.09516907f,
			0.08970642f, 0.08418274f, 0.07862854f, 0.07305908f, 0.06752014f, 0.06199646f, 0.056533813f, 0.051132202f, 0.045837402f, 0.040634155f,
			0.03555298f, 0.03060913f, 0.025817871f, 0.0211792f, 0.016708374f, 0.012420654f, 0.00831604f, 0.004394531f, 0.000686646f, -0.002822876f,
			-0.006134033f, -0.009231567f, -0.012115479f, -0.014801025f, -0.01725769f, -0.01953125f, -0.021575928f, -0.023422241f, -0.02508545f, -0.026535034f,
			-0.027801514f, -0.028884888f, -0.029785156f, -0.030517578f, 0.031082153f, 0.03147888f, 0.03173828f, 0.031845093f, 0.031814575f, 0.031661987f,
			0.03138733f, 0.03100586f, 0.030532837f, 0.029937744f, 0.029281616f, 0.028533936f, 0.02772522f, 0.02684021f, 0.025909424f, 0.024932861f,
			0.023910522f, 0.022857666f, 0.02178955f, 0.020690918f, 0.019577026f, 0.018463135f, 0.017349243f, 0.016235352f, 0.01512146f, 0.014022827f,
			0.012939453f, 0.011886597f, 0.010848999f, 0.009841919f, 0.008865356f, 0.007919312f, 0.007003784f, 0.006118774f, 0.0052948f, 0.004486084f,
			0.003723145f, 0.003005981f, 0.002334595f, 0.001693726f, 0.001098633f, 0.000549316f, 3.0518E-05f, -0.000442505f, -0.000869751f, -0.001266479f,
			-0.001617432f, -0.001937866f, -0.002227783f, -0.002487183f, -0.002700806f, -0.002883911f, -0.003051758f, -0.003173828f, -0.00328064f, -0.003372192f,
			-0.003417969f, -0.003463745f, -0.003479004f, -0.003479004f, -0.003463745f, -0.003433228f, -0.003387451f, -0.003326416f, 0.003250122f, 0.003173828f,
			0.003082275f, 0.002990723f, 0.00289917f, 0.002792358f, 0.002685547f, 0.002578735f, 0.002456665f, 0.002349854f, 0.002243042f, 0.002120972f,
			0.00201416f, 0.001907349f, 0.001785278f, 0.001693726f, 0.001586914f, 0.001480103f, 0.00138855f, 0.001296997f, 0.001205444f, 0.001113892f,
			0.001037598f, 0.000961304f, 0.00088501f, 0.000808716f, 0.000747681f, 0.000686646f, 0.00062561f, 0.000579834f, 0.000534058f, 0.000473022f,
			0.000442505f, 0.000396729f, 0.000366211f, 0.000320435f, 0.000289917f, 0.000259399f, 0.000244141f, 0.000213623f, 0.000198364f, 0.000167847f,
			0.000152588f, 0.000137329f, 0.00012207f, 0.000106812f, 0.000106812f, 9.1553E-05f, 7.6294E-05f, 7.6294E-05f, 6.1035E-05f, 6.1035E-05f,
			4.5776E-05f, 4.5776E-05f, 3.0518E-05f, 3.0518E-05f, 3.0518E-05f, 3.0518E-05f, 1.5259E-05f, 1.5259E-05f, 1.5259E-05f, 1.5259E-05f,
			1.5259E-05f, 1.5259E-05f
		};

		private static float[] SYNTH_COS64_TABLE = new float[31]
		{
			0.500603f, 0.5024193f, 0.50547093f, 0.5097956f, 0.5154473f, 0.5224986f, 0.5310426f, 0.5411961f, 0.5531039f, 0.56694406f,
			0.582935f, 0.6013449f, 0.6225041f, 0.6468218f, 0.6748083f, 0.70710677f, 0.7445363f, 0.7881546f, 0.8393496f, 0.8999762f,
			0.9725682f, 1.0606776f, 1.1694399f, 1.306563f, 1.4841646f, 1.7224472f, 2.057781f, 2.5629156f, 3.4076085f, 5.1011486f,
			10.190008f
		};

		private List<float[]> _synBuf = new List<float[]>(2);

		private List<int> _bufOffset = new List<int>(2);

		private float[] _eq;

		private float[] ippuv = new float[512];

		private float[] ei32 = new float[16];

		private float[] eo32 = new float[16];

		private float[] oi32 = new float[16];

		private float[] oo32 = new float[16];

		private float[] ei16 = new float[8];

		private float[] eo16 = new float[8];

		private float[] oi16 = new float[8];

		private float[] oo16 = new float[8];

		private float[] ei8 = new float[4];

		private float[] tmp8 = new float[6];

		private float[] oi8 = new float[4];

		private float[] oo8 = new float[4];

		internal StereoMode StereoMode { get; set; }

		internal LayerDecoderBase()
		{
			StereoMode = StereoMode.Both;
		}

		internal abstract int DecodeFrame(IMpegFrame frame, float[] ch0, float[] ch1);

		internal void SetEQ(float[] eq)
		{
			if (eq == null || eq.Length == 32)
			{
				_eq = eq;
			}
		}

		internal virtual void ResetForSeek()
		{
			_synBuf.Clear();
			_bufOffset.Clear();
		}

		protected void InversePolyPhase(int channel, float[] data)
		{
			GetBufAndOffset(channel, out var synBuf, out var k);
			if (_eq != null)
			{
				for (int i = 0; i < 32; i++)
				{
					data[i] *= _eq[i];
				}
			}
			DCT32(data, synBuf, k);
			BuildUVec(ippuv, synBuf, k);
			DewindowOutput(ippuv, data);
		}

		private void GetBufAndOffset(int channel, out float[] synBuf, out int k)
		{
			while (_synBuf.Count <= channel)
			{
				_synBuf.Add(new float[1024]);
			}
			while (_bufOffset.Count <= channel)
			{
				_bufOffset.Add(0);
			}
			synBuf = _synBuf[channel];
			k = _bufOffset[channel];
			k = (k - 32) & 0x1FF;
			_bufOffset[channel] = k;
		}

		private void DCT32(float[] _in, float[] _out, int k)
		{
			for (int i = 0; i < 16; i++)
			{
				ei32[i] = _in[i] + _in[31 - i];
				oi32[i] = (_in[i] - _in[31 - i]) * SYNTH_COS64_TABLE[2 * i];
			}
			DCT16(ei32, eo32);
			DCT16(oi32, oo32);
			for (int i = 0; i < 15; i++)
			{
				_out[2 * i + k] = eo32[i];
				_out[2 * i + 1 + k] = oo32[i] + oo32[i + 1];
			}
			_out[30 + k] = eo32[15];
			_out[31 + k] = oo32[15];
		}

		private void DCT16(float[] _in, float[] _out)
		{
			float num = _in[0];
			float num2 = _in[15];
			ei16[0] = num + num2;
			oi16[0] = (num - num2) * SYNTH_COS64_TABLE[1];
			num = _in[1];
			num2 = _in[14];
			ei16[1] = num + num2;
			oi16[1] = (num - num2) * SYNTH_COS64_TABLE[5];
			num = _in[2];
			num2 = _in[13];
			ei16[2] = num + num2;
			oi16[2] = (num - num2) * SYNTH_COS64_TABLE[9];
			num = _in[3];
			num2 = _in[12];
			ei16[3] = num + num2;
			oi16[3] = (num - num2) * SYNTH_COS64_TABLE[13];
			num = _in[4];
			num2 = _in[11];
			ei16[4] = num + num2;
			oi16[4] = (num - num2) * SYNTH_COS64_TABLE[17];
			num = _in[5];
			num2 = _in[10];
			ei16[5] = num + num2;
			oi16[5] = (num - num2) * SYNTH_COS64_TABLE[21];
			num = _in[6];
			num2 = _in[9];
			ei16[6] = num + num2;
			oi16[6] = (num - num2) * SYNTH_COS64_TABLE[25];
			num = _in[7];
			num2 = _in[8];
			ei16[7] = num + num2;
			oi16[7] = (num - num2) * SYNTH_COS64_TABLE[29];
			DCT8(ei16, eo16);
			DCT8(oi16, oo16);
			_out[0] = eo16[0];
			_out[1] = oo16[0] + oo16[1];
			_out[2] = eo16[1];
			_out[3] = oo16[1] + oo16[2];
			_out[4] = eo16[2];
			_out[5] = oo16[2] + oo16[3];
			_out[6] = eo16[3];
			_out[7] = oo16[3] + oo16[4];
			_out[8] = eo16[4];
			_out[9] = oo16[4] + oo16[5];
			_out[10] = eo16[5];
			_out[11] = oo16[5] + oo16[6];
			_out[12] = eo16[6];
			_out[13] = oo16[6] + oo16[7];
			_out[14] = eo16[7];
			_out[15] = oo16[7];
		}

		private void DCT8(float[] _in, float[] _out)
		{
			ei8[0] = _in[0] + _in[7];
			ei8[1] = _in[3] + _in[4];
			ei8[2] = _in[1] + _in[6];
			ei8[3] = _in[2] + _in[5];
			tmp8[0] = ei8[0] + ei8[1];
			tmp8[1] = ei8[2] + ei8[3];
			tmp8[2] = (ei8[0] - ei8[1]) * SYNTH_COS64_TABLE[7];
			tmp8[3] = (ei8[2] - ei8[3]) * SYNTH_COS64_TABLE[23];
			tmp8[4] = (tmp8[2] - tmp8[3]) * 0.70710677f;
			_out[0] = tmp8[0] + tmp8[1];
			_out[2] = tmp8[2] + tmp8[3] + tmp8[4];
			_out[4] = (tmp8[0] - tmp8[1]) * 0.70710677f;
			_out[6] = tmp8[4];
			oi8[0] = (_in[0] - _in[7]) * SYNTH_COS64_TABLE[3];
			oi8[1] = (_in[1] - _in[6]) * SYNTH_COS64_TABLE[11];
			oi8[2] = (_in[2] - _in[5]) * SYNTH_COS64_TABLE[19];
			oi8[3] = (_in[3] - _in[4]) * SYNTH_COS64_TABLE[27];
			tmp8[0] = oi8[0] + oi8[3];
			tmp8[1] = oi8[1] + oi8[2];
			tmp8[2] = (oi8[0] - oi8[3]) * SYNTH_COS64_TABLE[7];
			tmp8[3] = (oi8[1] - oi8[2]) * SYNTH_COS64_TABLE[23];
			tmp8[4] = tmp8[2] + tmp8[3];
			tmp8[5] = (tmp8[2] - tmp8[3]) * 0.70710677f;
			oo8[0] = tmp8[0] + tmp8[1];
			oo8[1] = tmp8[4] + tmp8[5];
			oo8[2] = (tmp8[0] - tmp8[1]) * 0.70710677f;
			oo8[3] = tmp8[5];
			_out[1] = oo8[0] + oo8[1];
			_out[3] = oo8[1] + oo8[2];
			_out[5] = oo8[2] + oo8[3];
			_out[7] = oo8[3];
		}

		private void BuildUVec(float[] u_vec, float[] cur_synbuf, int k)
		{
			int num = 0;
			for (int i = 0; i < 8; i++)
			{
				for (int j = 0; j < 16; j++)
				{
					u_vec[num + j] = cur_synbuf[k + j + 16];
					u_vec[num + j + 17] = 0f - cur_synbuf[k + 31 - j];
				}
				k = (k + 32) & 0x1FF;
				for (int j = 0; j < 16; j++)
				{
					u_vec[num + j + 32] = 0f - cur_synbuf[k + 16 - j];
					u_vec[num + j + 48] = 0f - cur_synbuf[k + j];
				}
				u_vec[num + 16] = 0f;
				k = (k + 32) & 0x1FF;
				num += 64;
			}
		}

		private void DewindowOutput(float[] u_vec, float[] samples)
		{
			for (int i = 0; i < 512; i++)
			{
				u_vec[i] *= DEWINDOW_TABLE[i];
			}
			for (int j = 0; j < 32; j++)
			{
				float num = u_vec[j];
				num += u_vec[j + 32];
				num += u_vec[j + 64];
				num += u_vec[j + 96];
				num += u_vec[j + 128];
				num += u_vec[j + 160];
				num += u_vec[j + 192];
				num += u_vec[j + 224];
				num += u_vec[j + 256];
				num += u_vec[j + 288];
				num += u_vec[j + 320];
				num += u_vec[j + 352];
				num += u_vec[j + 384];
				num += u_vec[j + 416];
				num += u_vec[j + 448];
				num += u_vec[j + 480];
				u_vec[j] = num;
			}
			for (int k = 0; k < 32; k++)
			{
				samples[k] = u_vec[k];
			}
		}
	}
	internal class LayerIDecoder : LayerIIDecoderBase
	{
		private static readonly int[] _rateTable = new int[32];

		private static readonly int[][] _allocLookupTable = new int[1][] { new int[17]
		{
			4, 0, 2, 3, 4, 5, 6, 7, 8, 9,
			10, 11, 12, 13, 14, 15, 16
		} };

		internal static bool GetCRC(MpegFrame frame, ref uint crc)
		{
			return LayerIIDecoderBase.GetCRC(frame, _rateTable, _allocLookupTable, readScfsiBits: false, ref crc);
		}

		internal LayerIDecoder()
			: base(_allocLookupTable, 1)
		{
		}

		protected override int[] GetRateTable(IMpegFrame frame)
		{
			return _rateTable;
		}

		protected override void ReadScaleFactorSelection(IMpegFrame frame, int[][] scfsi, int channels)
		{
		}
	}
	internal class LayerIIDecoder : LayerIIDecoderBase
	{
		private static readonly int[][] _rateLookupTable = new int[5][]
		{
			new int[27]
			{
				3, 3, 3, 2, 2, 2, 2, 2, 2, 2,
				2, 1, 1, 1, 1, 1, 1, 1, 1, 1,
				1, 1, 1, 0, 0, 0, 0
			},
			new int[30]
			{
				3, 3, 3, 2, 2, 2, 2, 2, 2, 2,
				2, 1, 1, 1, 1, 1, 1, 1, 1, 1,
				1, 1, 1, 0, 0, 0, 0, 0, 0, 0
			},
			new int[8] { 4, 4, 5, 5, 5, 5, 5, 5 },
			new int[12]
			{
				4, 4, 5, 5, 5, 5, 5, 5, 5, 5,
				5, 5
			},
			new int[30]
			{
				6, 6, 6, 6, 5, 5, 5, 5, 5, 5,
				5, 7, 7, 7, 7, 7, 7, 7, 7, 7,
				7, 7, 7, 7, 7, 7, 7, 7, 7, 7
			}
		};

		private static readonly int[][] _allocLookupTable = new int[8][]
		{
			new int[5] { 2, 0, -5, -7, 16 },
			new int[9] { 3, 0, -5, -7, 3, -10, 4, 5, 16 },
			new int[17]
			{
				4, 0, -5, -7, 3, -10, 4, 5, 6, 7,
				8, 9, 10, 11, 12, 13, 16
			},
			new int[17]
			{
				4, 0, -5, 3, 4, 5, 6, 7, 8, 9,
				10, 11, 12, 13, 14, 15, 16
			},
			new int[17]
			{
				4, 0, -5, -7, -10, 4, 5, 6, 7, 8,
				9, 10, 11, 12, 13, 14, 15
			},
			new int[9] { 3, 0, -5, -7, -10, 4, 5, 6, 7 },
			new int[17]
			{
				4, 0, -5, -7, 3, -10, 4, 5, 6, 7,
				8, 9, 10, 11, 12, 13, 14
			},
			new int[5] { 2, 0, -5, -7, -10 }
		};

		internal static bool GetCRC(MpegFrame frame, ref uint crc)
		{
			return LayerIIDecoderBase.GetCRC(frame, SelectTable(frame), _allocLookupTable, readScfsiBits: true, ref crc);
		}

		private static int[] SelectTable(IMpegFrame frame)
		{
			int num = frame.BitRate / ((frame.ChannelMode == MpegChannelMode.Mono) ? 1 : 2) / 1000;
			if (frame.Version == MpegVersion.Version1)
			{
				if ((num >= 56 && num <= 80) || (frame.SampleRate == 48000 && num >= 56))
				{
					return _rateLookupTable[0];
				}
				if (frame.SampleRate != 48000 && num >= 96)
				{
					return _rateLookupTable[1];
				}
				if (frame.SampleRate != 32000 && num <= 48)
				{
					return _rateLookupTable[2];
				}
				return _rateLookupTable[3];
			}
			return _rateLookupTable[4];
		}

		internal LayerIIDecoder()
			: base(_allocLookupTable, 3)
		{
		}

		protected override int[] GetRateTable(IMpegFrame frame)
		{
			return SelectTable(frame);
		}

		protected override void ReadScaleFactorSelection(IMpegFrame frame, int[][] scfsi, int channels)
		{
			for (int i = 0; i < 30; i++)
			{
				for (int j = 0; j < channels; j++)
				{
					if (scfsi[j][i] == 2)
					{
						scfsi[j][i] = frame.ReadBits(2);
					}
				}
			}
		}
	}
	internal abstract class LayerIIDecoderBase : LayerDecoderBase
	{
		protected const int SSLIMIT = 12;

		private static readonly float[] _groupedC = new float[5] { 0f, 0f, 1.3333334f, 1.6f, 1.7777778f };

		private static readonly float[] _groupedD = new float[5] { 0f, 0f, -0.5f, -0.5f, -0.5f };

		private static readonly float[] _C = new float[17]
		{
			0f, 0f, 1.3333334f, 1.1428572f, 1.0666667f, 1.032258f, 1.0158731f, 1.007874f, 1.0039216f, 1.0019569f,
			1.0009775f, 1.0004885f, 1.0002443f, 1.0001221f, 1.000061f, 1.0000305f, 1.0000153f
		};

		private static readonly float[] _D = new float[17]
		{
			0f,
			0f,
			-0.5f,
			-0.75f,
			-0.875f,
			-0.9375f,
			-31f / 32f,
			-63f / 64f,
			-127f / 128f,
			-0.99609375f,
			-0.9980469f,
			-0.99902344f,
			-0.9995117f,
			-0.99975586f,
			-0.9998779f,
			-0.99993896f,
			-0.9999695f
		};

		private static readonly float[] _denormalMultiplier = new float[64]
		{
			2f,
			1.587401f,
			1.2599211f,
			1f,
			0.7937005f,
			0.62996054f,
			0.5f,
			0.39685026f,
			0.31498027f,
			0.25f,
			0.19842513f,
			0.15749013f,
			0.125f,
			0.099212565f,
			0.07874507f,
			0.0625f,
			0.049606282f,
			0.039372534f,
			1f / 32f,
			0.024803141f,
			0.019686267f,
			1f / 64f,
			0.012401571f,
			0.009843133f,
			1f / 128f,
			0.0062007853f,
			0.0049215667f,
			0.00390625f,
			0.0031003926f,
			0.0024607833f,
			0.001953125f,
			0.0015501963f,
			0.0012303917f,
			0.0009765625f,
			0.00077509816f,
			0.00061519584f,
			0.00048828125f,
			0.00038754908f,
			0.00030759792f,
			0.00024414062f,
			0.00019377454f,
			0.00015379896f,
			0.00012207031f,
			9.688727E-05f,
			7.689948E-05f,
			6.1035156E-05f,
			4.8443635E-05f,
			3.844974E-05f,
			3.0517578E-05f,
			2.4221818E-05f,
			1.922487E-05f,
			1.5258789E-05f,
			1.2110909E-05f,
			9.612435E-06f,
			7.6293945E-06f,
			6.0554544E-06f,
			4.8062175E-06f,
			3.8146973E-06f,
			3.0277272E-06f,
			2.4031087E-06f,
			1.9073486E-06f,
			1.5138636E-06f,
			1.2015544E-06f,
			9.536743E-07f
		};

		private int _channels;

		private int _jsbound;

		private int _granuleCount;

		private int[][] _allocLookupTable;

		private int[][] _scfsi;

		private int[][] _samples;

		private int[][][] _scalefac;

		private float[] _polyPhaseBuf;

		private float[][] _chanBufs = new float[2][];

		private int[][] _allocation;

		protected static bool GetCRC(MpegFrame frame, int[] rateTable, int[][] allocLookupTable, bool readScfsiBits, ref uint crc)
		{
			int num = 0;
			int num2 = rateTable.Length;
			int num3 = num2;
			if (frame.ChannelMode == MpegChannelMode.JointStereo)
			{
				num3 = frame.ChannelModeExtension * 4 + 4;
			}
			int num4 = ((frame.ChannelMode == MpegChannelMode.Mono) ? 1 : 2);
			int i;
			for (i = 0; i < num3; i++)
			{
				int num5 = allocLookupTable[rateTable[i]][0];
				for (int j = 0; j < num4; j++)
				{
					int num6 = frame.ReadBits(num5);
					if (num6 > 0)
					{
						num += 2;
					}
					MpegFrame.UpdateCRC(num6, num5, ref crc);
				}
			}
			for (; i < num2; i++)
			{
				int num7 = allocLookupTable[rateTable[i]][0];
				int num8 = frame.ReadBits(num7);
				if (num8 > 0)
				{
					num += num4 * 2;
				}
				MpegFrame.UpdateCRC(num8, num7, ref crc);
			}
			if (readScfsiBits)
			{
				while (num >= 2)
				{
					MpegFrame.UpdateCRC(frame.ReadBits(2), 2, ref crc);
					num -= 2;
				}
			}
			return true;
		}

		protected LayerIIDecoderBase(int[][] allocLookupTable, int granuleCount)
		{
			_allocLookupTable = allocLookupTable;
			_granuleCount = granuleCount;
			_allocation = new int[2][]
			{
				new int[32],
				new int[32]
			};
			_scfsi = new int[2][]
			{
				new int[32],
				new int[32]
			};
			_samples = new int[2][]
			{
				new int[384 * _granuleCount],
				new int[384 * _granuleCount]
			};
			_scalefac = new int[2][][]
			{
				new int[3][],
				new int[3][]
			};
			for (int i = 0; i < 3; i++)
			{
				_scalefac[0][i] = new int[32];
				_scalefac[1][i] = new int[32];
			}
			_polyPhaseBuf = new float[32];
		}

		internal override int DecodeFrame(IMpegFrame frame, float[] ch0, float[] ch1)
		{
			InitFrame(frame);
			int[] rateTable = GetRateTable(frame);
			ReadAllocation(frame, rateTable);
			for (int i = 0; i < _scfsi[0].Length; i++)
			{
				_scfsi[0][i] = ((_allocation[0][i] != 0) ? 2 : (-1));
				_scfsi[1][i] = ((_allocation[1][i] != 0) ? 2 : (-1));
			}
			ReadScaleFactorSelection(frame, _scfsi, _channels);
			ReadScaleFactors(frame);
			ReadSamples(frame);
			return DecodeSamples(ch0, ch1);
		}

		private void InitFrame(IMpegFrame frame)
		{
			switch (frame.ChannelMode)
			{
			case MpegChannelMode.Mono:
				_channels = 1;
				_jsbound = 32;
				break;
			case MpegChannelMode.JointStereo:
				_channels = 2;
				_jsbound = frame.ChannelModeExtension * 4 + 4;
				break;
			default:
				_channels = 2;
				_jsbound = 32;
				break;
			}
		}

		protected abstract int[] GetRateTable(IMpegFrame frame);

		private void ReadAllocation(IMpegFrame frame, int[] rateTable)
		{
			int num = rateTable.Length;
			if (_jsbound > num)
			{
				_jsbound = num;
			}
			Array.Clear(_allocation[0], 0, 32);
			Array.Clear(_allocation[1], 0, 32);
			int i;
			for (i = 0; i < _jsbound; i++)
			{
				int[] array = _allocLookupTable[rateTable[i]];
				int bitCount = array[0];
				for (int j = 0; j < _channels; j++)
				{
					_allocation[j][i] = array[frame.ReadBits(bitCount) + 1];
				}
			}
			for (; i < num; i++)
			{
				int[] array2 = _allocLookupTable[rateTable[i]];
				_allocation[0][i] = (_allocation[1][i] = array2[frame.ReadBits(array2[0]) + 1]);
			}
		}

		protected abstract void ReadScaleFactorSelection(IMpegFrame frame, int[][] scfsi, int channels);

		private void ReadScaleFactors(IMpegFrame frame)
		{
			for (int i = 0; i < 32; i++)
			{
				for (int j = 0; j < _channels; j++)
				{
					switch (_scfsi[j][i])
					{
					case 0:
						_scalefac[j][0][i] = frame.ReadBits(6);
						_scalefac[j][1][i] = frame.ReadBits(6);
						_scalefac[j][2][i] = frame.ReadBits(6);
						break;
					case 1:
						_scalefac[j][0][i] = (_scalefac[j][1][i] = frame.ReadBits(6));
						_scalefac[j][2][i] = frame.ReadBits(6);
						break;
					case 2:
						_scalefac[j][0][i] = (_scalefac[j][1][i] = (_scalefac[j][2][i] = frame.ReadBits(6)));
						break;
					case 3:
						_scalefac[j][0][i] = frame.ReadBits(6);
						_scalefac[j][1][i] = (_scalefac[j][2][i] = frame.ReadBits(6));
						break;
					default:
						_scalefac[j][0][i] = 63;
						_scalefac[j][1][i] = 63;
						_scalefac[j][2][i] = 63;
						break;
					}
				}
			}
		}

		private void ReadSamples(IMpegFrame frame)
		{
			int num = 0;
			int num2 = 0;
			while (num < 12)
			{
				int num3 = 0;
				while (num3 < 32)
				{
					for (int i = 0; i < _channels; i++)
					{
						if (i == 0 || num3 < _jsbound)
						{
							int num4 = _allocation[i][num3];
							if (num4 != 0)
							{
								if (num4 < 0)
								{
									int num5 = frame.ReadBits(-num4);
									int num6 = (1 << -num4 / 2 + -num4 % 2 - 2) + 1;
									_samples[i][num2] = num5 % num6;
									num5 /= num6;
									_samples[i][num2 + 32] = num5 % num6;
									_samples[i][num2 + 64] = num5 / num6;
								}
								else
								{
									for (int j = 0; j < _granuleCount; j++)
									{
										_samples[i][num2 + 32 * j] = frame.ReadBits(num4);
									}
								}
							}
							else
							{
								for (int k = 0; k < _granuleCount; k++)
								{
									_samples[i][num2 + 32 * k] = 0;
								}
							}
						}
						else
						{
							for (int l = 0; l < _granuleCount; l++)
							{
								_samples[1][num2 + 32 * l] = _samples[0][num2 + 32 * l];
							}
						}
					}
					num3++;
					num2++;
				}
				num++;
				num2 += 32 * (_granuleCount - 1);
			}
		}

		private int DecodeSamples(float[] ch0, float[] ch1)
		{
			float[][] chanBufs = _chanBufs;
			int num = 0;
			int num2 = _channels - 1;
			if (_channels == 1 || base.StereoMode == StereoMode.LeftOnly)
			{
				chanBufs[0] = ch0;
				num2 = 0;
			}
			else if (base.StereoMode == StereoMode.RightOnly)
			{
				chanBufs[1] = ch0;
				num = 1;
			}
			else
			{
				chanBufs[0] = ch0;
				chanBufs[1] = ch1;
			}
			int num3 = 0;
			for (int i = num; i <= num2; i++)
			{
				num3 = 0;
				for (int j = 0; j < _granuleCount; j++)
				{
					for (int k = 0; k < 12; k++)
					{
						int num4 = 0;
						while (num4 < 32)
						{
							int num5 = _allocation[i][num4];
							if (num5 != 0)
							{
								float[] array;
								float[] array2;
								if (num5 < 0)
								{
									num5 = -num5 / 2 + -num5 % 2 - 1;
									array = _groupedC;
									array2 = _groupedD;
								}
								else
								{
									array = _C;
									array2 = _D;
								}
								_polyPhaseBuf[num4] = array[num5] * ((float)(_samples[i][num3] << 16 - num5) / 32768f + array2[num5]) * _denormalMultiplier[_scalefac[i][j][num4]];
							}
							else
							{
								_polyPhaseBuf[num4] = 0f;
							}
							num4++;
							num3++;
						}
						InversePolyPhase(i, _polyPhaseBuf);
						Array.Copy(_polyPhaseBuf, 0, chanBufs[i], num3 - 32, 32);
					}
				}
			}
			if (_channels == 2 && base.StereoMode == StereoMode.DownmixToMono)
			{
				for (int l = 0; l < num3; l++)
				{
					ch0[l] = (ch0[l] + ch1[l]) / 2f;
				}
			}
			return num3;
		}
	}
	internal sealed class LayerIIIDecoder : LayerDecoderBase
	{
		private class HybridMDCT
		{
			private const float PI = MathF.PI;

			private static float[][] _swin;

			private static float[] icos72_table;

			private List<float[]> _prevBlock;

			private List<float[]> _nextBlock;

			private float[] _imdctTemp = new float[18];

			private float[] _imdctResult = new float[36];

			private float[] _longImdct_H = new float[17];

			private float[] _longImdct_h = new float[18];

			private float[] _longImdct_even = new float[9];

			private float[] _longImdct_odd = new float[9];

			private float[] _longImdct_evenIdct = new float[9];

			private float[] _longImdct_oddIdct = new float[9];

			private float[] _imdct9pt_even_idct = new float[5];

			private float[] _imdct9pt_odd_idct = new float[4];

			private float[] _shortImdct_H = new float[6];

			private float[] _shortImdct_h = new float[6];

			private float[] _shortImdct_evenIdct = new float[3];

			private float[] _shortImdct_oddIdct = new float[3];

			private const float sqrt32 = 0.8660254f;

			static HybridMDCT()
			{
				icos72_table = new float[35]
				{
					0.50047636f, 0.5019099f, 0.5043145f, 0.5077133f, 0.51213974f, 0.5176381f, 0.5242646f, 0.5320889f, 0.5411961f, 0.55168897f,
					0.56369096f, 0.57735026f, 0.59284455f, 0.61038727f, 0.6302362f, 0.65270364f, 0.67817086f, 0.70710677f, 0.7400936f, 0.7778619f,
					0.8213398f, 0.8717234f, 0.9305795f, 1f, 1.0828403f, 1.1831008f, 1.306563f, 1.4619021f, 1.6627548f, 1.9318516f,
					2.3101132f, 2.8793852f, 3.830649f, 5.7368565f, 11.462792f
				};
				_swin = new float[4][]
				{
					new float[36],
					new float[36],
					new float[36],
					new float[36]
				};
				for (int i = 0; i < 36; i++)
				{
					_swin[0][i] = (float)Math.Sin(0.0872664675116539 * ((double)i + 0.5));
				}
				for (int i = 0; i < 18; i++)
				{
					_swin[1][i] = (float)Math.Sin(0.0872664675116539 * ((double)i + 0.5));
				}
				for (int i = 18; i < 24; i++)
				{
					_swin[1][i] = 1f;
				}
				for (int i = 24; i < 30; i++)
				{
					_swin[1][i] = (float)Math.Sin(0.2617993950843811 * ((double)i + 0.5 - 18.0));
				}
				for (int i = 30; i < 36; i++)
				{
					_swin[1][i] = 0f;
				}
				for (int i = 0; i < 6; i++)
				{
					_swin[3][i] = 0f;
				}
				for (int i = 6; i <