From d7f588e19c5dcf2bde7f7eada92eee2bb68d9e3c Mon Sep 17 00:00:00 2001
From: karamanolev <devnull@localhost>
Date: Mon, 24 Oct 2011 08:42:30 +0000
Subject: [PATCH] Refactored the LAME interop.

---
 CUETools.Codecs.Icecast/IcecastWriter.cs      |   2 +-
 .../CUETools.Codecs.LAME.csproj               |  21 +-
 CUETools.Codecs.LAME/Encoder.cs               | 438 -----------------
 CUETools.Codecs.LAME/Interop/ACC.cs           |  14 +
 CUETools.Codecs.LAME/Interop/BE_CONFIG.cs     |  27 ++
 CUETools.Codecs.LAME/Interop/BE_VERSION.cs    |  34 ++
 CUETools.Codecs.LAME/Interop/Format.cs        |  21 +
 .../Interop/LAME_QUALITY_PRESET.cs            |  34 ++
 CUETools.Codecs.LAME/Interop/LHV1.cs          | 130 +++++
 CUETools.Codecs.LAME/Interop/Lame_encDLL.cs   | 161 +++++++
 CUETools.Codecs.LAME/Interop/License.txt      |  25 +
 CUETools.Codecs.LAME/Interop/MP3.cs           |  17 +
 CUETools.Codecs.LAME/Interop/MpegMode.cs      |  13 +
 CUETools.Codecs.LAME/Interop/VBRMETHOD.cs     |  12 +
 CUETools.Codecs.LAME/LAMEEncoder.cs           | 281 +++++++++++
 CUETools.Codecs.LAME/LAMEEncoderCBR.cs        |  70 +++
 .../LAMEEncoderCBRSettings.cs                 |  23 +
 CUETools.Codecs.LAME/LAMEEncoderVBR.cs        |  62 +++
 .../LAMEEncoderVBRProcessingQuality.cs        |   8 +
 .../LAMEEncoderVBRSettings.cs                 |  18 +
 CUETools.Codecs.LAME/Lame.cs                  | 455 ------------------
 CUETools.Codecs.LAME/LameWriterVBR.cs         |   3 -
 22 files changed, 970 insertions(+), 899 deletions(-)
 delete mode 100644 CUETools.Codecs.LAME/Encoder.cs
 create mode 100644 CUETools.Codecs.LAME/Interop/ACC.cs
 create mode 100644 CUETools.Codecs.LAME/Interop/BE_CONFIG.cs
 create mode 100644 CUETools.Codecs.LAME/Interop/BE_VERSION.cs
 create mode 100644 CUETools.Codecs.LAME/Interop/Format.cs
 create mode 100644 CUETools.Codecs.LAME/Interop/LAME_QUALITY_PRESET.cs
 create mode 100644 CUETools.Codecs.LAME/Interop/LHV1.cs
 create mode 100644 CUETools.Codecs.LAME/Interop/Lame_encDLL.cs
 create mode 100644 CUETools.Codecs.LAME/Interop/License.txt
 create mode 100644 CUETools.Codecs.LAME/Interop/MP3.cs
 create mode 100644 CUETools.Codecs.LAME/Interop/MpegMode.cs
 create mode 100644 CUETools.Codecs.LAME/Interop/VBRMETHOD.cs
 create mode 100644 CUETools.Codecs.LAME/LAMEEncoder.cs
 create mode 100644 CUETools.Codecs.LAME/LAMEEncoderCBR.cs
 create mode 100644 CUETools.Codecs.LAME/LAMEEncoderCBRSettings.cs
 create mode 100644 CUETools.Codecs.LAME/LAMEEncoderVBR.cs
 create mode 100644 CUETools.Codecs.LAME/LAMEEncoderVBRProcessingQuality.cs
 create mode 100644 CUETools.Codecs.LAME/LAMEEncoderVBRSettings.cs
 delete mode 100644 CUETools.Codecs.LAME/Lame.cs

diff --git a/CUETools.Codecs.Icecast/IcecastWriter.cs b/CUETools.Codecs.Icecast/IcecastWriter.cs
index 3ec247b..e3abb9f 100644
--- a/CUETools.Codecs.Icecast/IcecastWriter.cs
+++ b/CUETools.Codecs.Icecast/IcecastWriter.cs
@@ -82,7 +82,7 @@ namespace CUETools.Codecs.Icecast
 				{
 					encoder = new CUETools.Codecs.LAME.LAMEEncoderCBR("", reqStream, AudioPCMConfig.RedBook);
 					(encoder.Settings as CUETools.Codecs.LAME.LAMEEncoderCBRSettings).StereoMode = settings.JointStereo ? 
-						CUETools.Codecs.LAME.MpegMode.JOINT_STEREO : CUETools.Codecs.LAME.MpegMode.STEREO;
+						CUETools.Codecs.LAME.Interop.MpegMode.JOINT_STEREO : CUETools.Codecs.LAME.Interop.MpegMode.STEREO;
 					(encoder.Settings as CUETools.Codecs.LAME.LAMEEncoderCBRSettings).CustomBitrate = settings.Bitrate;
 				}
 			}
diff --git a/CUETools.Codecs.LAME/CUETools.Codecs.LAME.csproj b/CUETools.Codecs.LAME/CUETools.Codecs.LAME.csproj
index 50a7a9a..728f3f2 100644
--- a/CUETools.Codecs.LAME/CUETools.Codecs.LAME.csproj
+++ b/CUETools.Codecs.LAME/CUETools.Codecs.LAME.csproj
@@ -59,8 +59,22 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="Encoder.cs" />
-    <Compile Include="Lame.cs" />
+    <Compile Include="Interop\ACC.cs" />
+    <Compile Include="Interop\BE_CONFIG.cs" />
+    <Compile Include="Interop\BE_VERSION.cs" />
+    <Compile Include="Interop\Format.cs" />
+    <Compile Include="Interop\Lame_encDLL.cs" />
+    <Compile Include="Interop\LAME_QUALITY_PRESET.cs" />
+    <Compile Include="Interop\LHV1.cs" />
+    <Compile Include="Interop\MP3.cs" />
+    <Compile Include="Interop\MpegMode.cs" />
+    <Compile Include="Interop\VBRMETHOD.cs" />
+    <Compile Include="LAMEEncoder.cs" />
+    <Compile Include="LAMEEncoderCBR.cs" />
+    <Compile Include="LAMEEncoderCBRSettings.cs" />
+    <Compile Include="LAMEEncoderVBR.cs" />
+    <Compile Include="LAMEEncoderVBRProcessingQuality.cs" />
+    <Compile Include="LAMEEncoderVBRSettings.cs" />
     <Compile Include="LameWriter.cs" />
     <Compile Include="LameWriterSettings.cs" />
     <Compile Include="LameWriterVBR.cs" />
@@ -90,6 +104,9 @@
       <Install>true</Install>
     </BootstrapperPackage>
   </ItemGroup>
+  <ItemGroup>
+    <Content Include="Interop\License.txt" />
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
diff --git a/CUETools.Codecs.LAME/Encoder.cs b/CUETools.Codecs.LAME/Encoder.cs
deleted file mode 100644
index e85ce6b..0000000
--- a/CUETools.Codecs.LAME/Encoder.cs
+++ /dev/null
@@ -1,438 +0,0 @@
-using System;
-using System.ComponentModel;
-using System.Collections.Generic;
-using System.Text;
-using System.IO;
-using CUETools.Codecs;
-
-namespace CUETools.Codecs.LAME
-{
-	public class LAMEEncoder : IAudioDest
-	{
-		private bool closed = false;
-		private BE_CONFIG m_Mp3Config = null;
-		private uint m_hLameStream = 0;
-		private uint m_InputSamples = 0;
-		private uint m_OutBufferSize = 0;
-		private byte[] m_InBuffer = null;
-		private int m_InBufferPos = 0;
-		private byte[] m_OutBuffer = null;
-		private AudioPCMConfig _pcm;
-		private string _path;
-		private Stream _IO;
-		private long position = 0, sample_count = -1;
-		private long bytesWritten = 0;
-
-		public LAMEEncoder(string path, Stream IO, AudioPCMConfig pcm)
-		{
-			if (pcm.BitsPerSample != 16)// && pcm.BitsPerSample != 32)
-				throw new ArgumentOutOfRangeException("format", "Only 16 & 32 bits samples supported");
-			_pcm = pcm;
-			_path = path;
-			_IO = IO;
-		}
-
-		public LAMEEncoder(string path, AudioPCMConfig pcm)
-			: this(path, null, pcm)
-		{
-		}
-
-		public void DeInit(bool flush)
-		{
-			if (!inited || closed)
-				return;
-
-			try
-			{
-				if (flush)
-				{
-					uint EncodedSize = 0;
-					if (m_InBufferPos > 0)
-					{
-						if (Lame_encDll.EncodeChunk(m_hLameStream, m_InBuffer, 0, (uint)m_InBufferPos, m_OutBuffer, ref EncodedSize) == Lame_encDll.BE_ERR_SUCCESSFUL)
-						{
-							if (EncodedSize > 0)
-							{
-								_IO.Write(m_OutBuffer, 0, (int)EncodedSize);
-								bytesWritten += EncodedSize;
-							}
-						}
-					}
-					EncodedSize = 0;
-					if (Lame_encDll.beDeinitStream(m_hLameStream, m_OutBuffer, ref EncodedSize) == Lame_encDll.BE_ERR_SUCCESSFUL)
-					{
-						if (EncodedSize > 0)
-						{
-							_IO.Write(m_OutBuffer, 0, (int)EncodedSize);
-							bytesWritten += EncodedSize;
-						}
-					}
-				}
-			}
-			finally
-			{
-				Lame_encDll.beCloseStream(m_hLameStream);
-				_IO.Close();
-				closed = true;
-			}		
-		}
-
-		public void Close()
-		{
-			bool needTag = !closed && _path != null && _path != "";
-			DeInit(true);
-			if (needTag)
-			{
-				bool utf8Required = Encoding.Default.GetString(Encoding.Default.GetBytes(_path)) != _path;
-				var tempDir = System.IO.Path.Combine(System.IO.Path.GetPathRoot(_path), "Temp");
-				var tempName = utf8Required ? System.IO.Path.Combine(tempDir, Guid.NewGuid().ToString()) : _path;
-				try
-				{
-					if (utf8Required && !Directory.Exists(tempDir)) Directory.CreateDirectory(tempDir);
-					if (utf8Required) File.Move(_path, tempName);
-					Lame_encDll.beWriteInfoTag(m_hLameStream, tempName);
-					if (utf8Required) File.Move(tempName, _path);
-				}
-				catch
-				{
-					if (utf8Required) File.Move(tempName, _path);
-				}
-			}
-		}
-
-		public void Delete()
-		{
-			if (!closed)
-			{
-				DeInit(false);
-				if (_path != "")
-					File.Delete(_path);
-			}
-		}
-
-		protected virtual BE_CONFIG MakeConfig()
-		{
-			return new BE_CONFIG(_pcm);
-		}
-
-		private bool inited = false;
-		private void Init()
-		{
-			if (inited)
-				return;
-
-			m_Mp3Config = MakeConfig();
-
-			uint LameResult = Lame_encDll.beInitStream(m_Mp3Config, ref m_InputSamples, ref m_OutBufferSize, ref m_hLameStream);
-			if (LameResult != Lame_encDll.BE_ERR_SUCCESSFUL)
-				throw new ApplicationException(string.Format("Lame_encDll.beInitStream failed with the error code {0}", LameResult));
-
-			m_InBuffer = new byte[m_InputSamples * 2]; //Input buffer is expected as short[]
-			m_OutBuffer = new byte[Math.Max(65536, m_OutBufferSize)];
-
-			if (_IO == null)
-				_IO = new FileStream(_path, FileMode.Create, FileAccess.Write, FileShare.Read);
-
-			inited = true;
-		}
-
-		public unsafe void Write(AudioBuffer buff)
-		{
-			buff.Prepare(this);
-
-			Init();
-
-			byte[] buffer = buff.Bytes;
-			int index = 0;
-			int count = buff.ByteLength;
-
-			int ToCopy = 0;
-			uint EncodedSize = 0;
-			uint LameResult;
-			uint outBufferIndex = 0;
-			fixed (byte* pBuffer = buffer, pOutBuffer = m_OutBuffer)
-			{
-				while (count > 0)
-				{
-					if (m_InBufferPos > 0)
-					{
-						ToCopy = Math.Min(count, m_InBuffer.Length - m_InBufferPos);
-						Buffer.BlockCopy(buffer, index, m_InBuffer, m_InBufferPos, ToCopy);
-						m_InBufferPos += ToCopy;
-						index += ToCopy;
-						count -= ToCopy;
-						if (m_InBufferPos >= m_InBuffer.Length)
-						{
-							m_InBufferPos = 0;
-							if (outBufferIndex > 0)
-							{
-								_IO.Write(m_OutBuffer, 0, (int)outBufferIndex);
-								bytesWritten += outBufferIndex;
-								outBufferIndex = 0;
-							}
-
-							if ((LameResult = Lame_encDll.EncodeChunk(m_hLameStream, m_InBuffer, m_OutBuffer, ref EncodedSize)) == Lame_encDll.BE_ERR_SUCCESSFUL)
-							{
-								outBufferIndex += EncodedSize;
-							}
-							else
-							{
-								throw new ApplicationException(string.Format("Lame_encDll.EncodeChunk failed with the error code {0}", LameResult));
-							}
-						}
-					}
-					else
-					{
-						if (count >= m_InBuffer.Length)
-						{
-							if (outBufferIndex + m_OutBufferSize > m_OutBuffer.Length)
-							{
-								_IO.Write(m_OutBuffer, 0, (int)outBufferIndex);
-								bytesWritten += outBufferIndex;
-								outBufferIndex = 0;
-							}
-
-							if ((LameResult = Lame_encDll.EncodeChunk(m_hLameStream, pBuffer + index, (uint)m_InBuffer.Length, pOutBuffer + outBufferIndex, ref EncodedSize)) == Lame_encDll.BE_ERR_SUCCESSFUL)
-							{
-								outBufferIndex += EncodedSize;
-							}
-							else
-							{
-								throw new ApplicationException(string.Format("Lame_encDll.EncodeChunk failed with the error code {0}", LameResult));
-							}
-							count -= m_InBuffer.Length;
-							index += m_InBuffer.Length;
-						}
-						else
-						{
-							Buffer.BlockCopy(buffer, index, m_InBuffer, 0, count);
-							m_InBufferPos = count;
-							index += count;
-							count = 0;
-						}
-					}
-				}
-			}
-
-			if (outBufferIndex > 0)
-			{
-				_IO.Write(m_OutBuffer, 0, (int)outBufferIndex);
-				bytesWritten += outBufferIndex;
-			}
-		}
-
-		public virtual int CompressionLevel
-		{
-			get
-			{
-				return 0;
-			}
-			set
-			{
-				if (value != 0)
-					throw new Exception("unsupported compression level");
-			}
-		}
-
-		public virtual object Settings
-		{
-			get
-			{
-				return null;
-			}
-			set
-			{
-				if (value != null && value.GetType() != typeof(object))
-					throw new Exception("Unsupported options " + value);
-			}
-		}
-
-		public long Padding
-		{
-			set { }
-		}
-
-		public long Position
-		{
-			get
-			{
-				return position;
-			}
-		}
-
-		public long FinalSampleCount
-		{
-			set { sample_count = (int)value; }
-		}
-
-		public long BlockSize
-		{
-			set { }
-			get { return 0; }
-		}
-
-		public AudioPCMConfig PCM
-		{
-			get { return _pcm; }
-		}
-
-		public string Path { get { return _path; } }
-
-		public long BytesWritten
-		{
-			get
-			{
-				return bytesWritten;
-			}
-		}
-	}
-
-	public enum LAMEEncoderVBRProcessingQuality : uint
-	{
-		Best = 0,
-		Normal = 5,
-	} 
-
-	public class LAMEEncoderVBRSettings
-	{
-		public LAMEEncoderVBRSettings()
-		{
-			// Iterate through each property and call ResetValue()
-			foreach (PropertyDescriptor property in TypeDescriptor.GetProperties(this))
-				property.ResetValue(this);
-		}
-
-		[DefaultValue(LAMEEncoderVBRProcessingQuality.Normal)]
-		public LAMEEncoderVBRProcessingQuality Quality { get; set; }
-	}
-
-	[AudioEncoderClass("lame VBR", "mp3", false, "V9 V8 V7 V6 V5 V4 V3 V2 V1 V0", "V2", 2, typeof(LAMEEncoderVBRSettings))]
-	public class LAMEEncoderVBR : LAMEEncoder
-	{
-		private int quality = 0;
-
-		public LAMEEncoderVBR(string path, Stream IO, AudioPCMConfig pcm)
-			: base(path, IO, pcm)
-		{
-		}
-
-		public LAMEEncoderVBR(string path, AudioPCMConfig pcm)
-			: base(path, null, pcm)
-		{
-		}
-
-		protected override BE_CONFIG MakeConfig()
-		{
-			BE_CONFIG Mp3Config = new BE_CONFIG(PCM, 0, (uint)_settings.Quality);
-			Mp3Config.format.lhv1.bWriteVBRHeader = 1;
-			Mp3Config.format.lhv1.nMode = MpegMode.JOINT_STEREO;
-			Mp3Config.format.lhv1.bEnableVBR = 1;
-			Mp3Config.format.lhv1.nVBRQuality = quality;
-			Mp3Config.format.lhv1.nVbrMethod = VBRMETHOD.VBR_METHOD_NEW; // --vbr-new
-			return Mp3Config;
-		}
-
-		public override int CompressionLevel
-		{
-			get
-			{
-				return 9 - quality;
-			}
-			set
-			{
-				if (value < 0 || value > 9)
-					throw new Exception("unsupported compression level");
-				quality = 9 - value;
-			}
-		}
-
-		LAMEEncoderVBRSettings _settings = new LAMEEncoderVBRSettings();
-
-		public override object Settings
-		{
-			get
-			{
-				return _settings;
-			}
-			set
-			{
-				if (value as LAMEEncoderVBRSettings == null)
-					throw new Exception("Unsupported options " + value);
-				_settings = value as LAMEEncoderVBRSettings;
-			}
-		}
-	}
-
-	public class LAMEEncoderCBRSettings
-	{
-		public LAMEEncoderCBRSettings() {
-			// Iterate through each property and call ResetValue()
-			foreach (PropertyDescriptor property in TypeDescriptor.GetProperties(this))
-				property.ResetValue(this);
-		}
-		[DefaultValue(0)]
-		public int CustomBitrate { get; set; }
-		[DefaultValue(MpegMode.STEREO)]
-		public MpegMode StereoMode { get; set; }
-	}
-
-	[AudioEncoderClass("lame CBR", "mp3", false, "96 128 192 256 320", "256", 2, typeof(LAMEEncoderCBRSettings))]
-	public class LAMEEncoderCBR : LAMEEncoder
-	{
-		private uint bps;
-		private static readonly uint[] bps_table = new uint[] {96, 128, 192, 256, 320};
-
-		public LAMEEncoderCBR(string path, Stream IO, AudioPCMConfig pcm)
-			: base(path, IO, pcm)
-		{
-		}
-
-		public LAMEEncoderCBR(string path, AudioPCMConfig pcm)
-			: base(path, null, pcm)
-		{
-		}
-
-		public override int CompressionLevel
-		{
-			get
-			{
-				for (int i = 0; i < bps_table.Length; i++)
-					if (bps == bps_table[i])
-						return i;
-				return -1;
-			}
-			set
-			{
-				if (value < 0 || value > bps_table.Length)
-					throw new Exception("unsupported compression level");
-				bps = bps_table[value];
-			}
-		}
-
-		LAMEEncoderCBRSettings _settings = new LAMEEncoderCBRSettings();
-
-		public override object Settings
-		{
-			get
-			{
-				return _settings;
-			}
-			set
-			{
-				if (value as LAMEEncoderCBRSettings == null)
-					throw new Exception("Unsupported options " + value);
-				_settings = value as LAMEEncoderCBRSettings;
-			}
-		}
-
-		protected override BE_CONFIG MakeConfig()
-		{
-			BE_CONFIG Mp3Config = new BE_CONFIG(PCM, _settings.CustomBitrate > 0 ? (uint)_settings.CustomBitrate : bps, 5);
-			Mp3Config.format.lhv1.bWriteVBRHeader = 1;
-			Mp3Config.format.lhv1.nMode = _settings.StereoMode;
-			//Mp3Config.format.lhv1.nVbrMethod = VBRMETHOD.VBR_METHOD_NONE; // --cbr
-			//Mp3Config.format.lhv1.nPreset = LAME_QUALITY_PRESET.LQP_NORMAL_QUALITY;
-			return Mp3Config;
-		}
-	}
-}
diff --git a/CUETools.Codecs.LAME/Interop/ACC.cs b/CUETools.Codecs.LAME/Interop/ACC.cs
new file mode 100644
index 0000000..9256406
--- /dev/null
+++ b/CUETools.Codecs.LAME/Interop/ACC.cs
@@ -0,0 +1,14 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace CUETools.Codecs.LAME.Interop
+{
+    [StructLayout(LayoutKind.Sequential), Serializable]
+    public struct ACC
+    {
+        public uint dwSampleRate;
+        public byte byMode;
+        public ushort wBitrate;
+        public byte byEncodingMethod;
+    }
+}
diff --git a/CUETools.Codecs.LAME/Interop/BE_CONFIG.cs b/CUETools.Codecs.LAME/Interop/BE_CONFIG.cs
new file mode 100644
index 0000000..6ebc45c
--- /dev/null
+++ b/CUETools.Codecs.LAME/Interop/BE_CONFIG.cs
@@ -0,0 +1,27 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace CUETools.Codecs.LAME.Interop
+{
+    [StructLayout(LayoutKind.Sequential), Serializable]
+    public class BE_CONFIG
+    {
+        // encoding formats
+        public const uint BE_CONFIG_MP3 = 0;
+        public const uint BE_CONFIG_LAME = 256;
+
+        public uint dwConfig;
+        public Format format;
+
+        public BE_CONFIG(AudioPCMConfig format, uint MpeBitRate, uint quality)
+        {
+            this.dwConfig = BE_CONFIG_LAME;
+            this.format = new Format(format, MpeBitRate, quality);
+        }
+
+        public BE_CONFIG(AudioPCMConfig format)
+            : this(format, 0, 5)
+        {
+        }
+    }
+}
diff --git a/CUETools.Codecs.LAME/Interop/BE_VERSION.cs b/CUETools.Codecs.LAME/Interop/BE_VERSION.cs
new file mode 100644
index 0000000..368bb25
--- /dev/null
+++ b/CUETools.Codecs.LAME/Interop/BE_VERSION.cs
@@ -0,0 +1,34 @@
+using System.Runtime.InteropServices;
+
+namespace CUETools.Codecs.LAME.Interop
+{
+    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
+    public class BE_VERSION
+    {
+        public const uint BE_MAX_HOMEPAGE = 256;
+        public byte byDLLMajorVersion;
+        public byte byDLLMinorVersion;
+        public byte byMajorVersion;
+        public byte byMinorVersion;
+        // DLL Release date
+        public byte byDay;
+        public byte byMonth;
+        public ushort wYear;
+
+        //Homepage URL
+        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 257/*BE_MAX_HOMEPAGE+1*/)]
+        public string zHomepage;
+
+        public byte byAlphaLevel;
+        public byte byBetaLevel;
+        public byte byMMXEnabled;
+
+        [MarshalAs(UnmanagedType.ByValArray, SizeConst = 125)]
+        public byte[] btReserved;
+
+        public BE_VERSION()
+        {
+            btReserved = new byte[125];
+        }
+    }
+}
diff --git a/CUETools.Codecs.LAME/Interop/Format.cs b/CUETools.Codecs.LAME/Interop/Format.cs
new file mode 100644
index 0000000..c8a03e7
--- /dev/null
+++ b/CUETools.Codecs.LAME/Interop/Format.cs
@@ -0,0 +1,21 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace CUETools.Codecs.LAME.Interop
+{
+    [StructLayout(LayoutKind.Explicit), Serializable]
+    public class Format
+    {
+        [FieldOffset(0)]
+        public MP3 mp3;
+        [FieldOffset(0)]
+        public LHV1 lhv1;
+        [FieldOffset(0)]
+        public ACC acc;
+
+        public Format(AudioPCMConfig format, uint MpeBitRate, uint quality)
+        {
+            lhv1 = new LHV1(format, MpeBitRate, quality);
+        }
+    }
+}
diff --git a/CUETools.Codecs.LAME/Interop/LAME_QUALITY_PRESET.cs b/CUETools.Codecs.LAME/Interop/LAME_QUALITY_PRESET.cs
new file mode 100644
index 0000000..e26c7bc
--- /dev/null
+++ b/CUETools.Codecs.LAME/Interop/LAME_QUALITY_PRESET.cs
@@ -0,0 +1,34 @@
+namespace CUETools.Codecs.LAME.Interop
+{
+    public enum LAME_QUALITY_PRESET : int
+    {
+        LQP_NOPRESET = -1,
+        // QUALITY PRESETS
+        LQP_NORMAL_QUALITY = 0,
+        LQP_LOW_QUALITY = 1,
+        LQP_HIGH_QUALITY = 2,
+        LQP_VOICE_QUALITY = 3,
+        LQP_R3MIX = 4,
+        LQP_VERYHIGH_QUALITY = 5,
+        LQP_STANDARD = 6,
+        LQP_FAST_STANDARD = 7,
+        LQP_EXTREME = 8,
+        LQP_FAST_EXTREME = 9,
+        LQP_INSANE = 10,
+        LQP_ABR = 11,
+        LQP_CBR = 12,
+        LQP_MEDIUM = 13,
+        LQP_FAST_MEDIUM = 14,
+        // NEW PRESET VALUES
+        LQP_PHONE = 1000,
+        LQP_SW = 2000,
+        LQP_AM = 3000,
+        LQP_FM = 4000,
+        LQP_VOICE = 5000,
+        LQP_RADIO = 6000,
+        LQP_TAPE = 7000,
+        LQP_HIFI = 8000,
+        LQP_CD = 9000,
+        LQP_STUDIO = 10000
+    }
+}
diff --git a/CUETools.Codecs.LAME/Interop/LHV1.cs b/CUETools.Codecs.LAME/Interop/LHV1.cs
new file mode 100644
index 0000000..ae35d3e
--- /dev/null
+++ b/CUETools.Codecs.LAME/Interop/LHV1.cs
@@ -0,0 +1,130 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace CUETools.Codecs.LAME.Interop
+{
+    [StructLayout(LayoutKind.Sequential, Size = 327), Serializable]
+    public struct LHV1 // BE_CONFIG_LAME LAME header version 1
+    {
+        public const uint MPEG1 = 1;
+        public const uint MPEG2 = 0;
+
+        // STRUCTURE INFORMATION
+        public uint dwStructVersion;
+        public uint dwStructSize;
+        // BASIC ENCODER SETTINGS
+        public uint dwSampleRate;		// SAMPLERATE OF INPUT FILE
+        public uint dwReSampleRate;		// DOWNSAMPLERATE, 0=ENCODER DECIDES	
+        public MpegMode nMode;	// STEREO, MONO
+        public uint dwBitrate;			// CBR bitrate, VBR min bitrate
+        public uint dwMaxBitrate;		// CBR ignored, VBR Max bitrate
+        public LAME_QUALITY_PRESET nPreset;			// Quality preset
+        public uint dwMpegVersion;		// MPEG-1 OR MPEG-2
+        public uint dwPsyModel;			// FUTURE USE, SET TO 0
+        public uint dwEmphasis;			// FUTURE USE, SET TO 0
+        // BIT STREAM SETTINGS
+        public int bPrivate;			// Set Private Bit (TRUE/FALSE)
+        public int bCRC;	// Insert CRC (TRUE/FALSE)
+        public int bCopyright;			// Set Copyright Bit (TRUE/FALSE)
+        public int bOriginal;			// Set Original Bit (TRUE/FALSE)
+        // VBR STUFF
+        public int bWriteVBRHeader;	// WRITE XING VBR HEADER (TRUE/FALSE)
+        public int bEnableVBR;			// USE VBR ENCODING (TRUE/FALSE)
+        public int nVBRQuality;		// VBR QUALITY 0..9
+        public uint dwVbrAbr_bps;		// Use ABR in stead of nVBRQuality
+        public VBRMETHOD nVbrMethod;
+        public int bNoRes;	// Disable Bit resorvoir (TRUE/FALSE)
+        // MISC SETTINGS
+        public int bStrictIso;			// Use strict ISO encoding rules (TRUE/FALSE)
+        public ushort nQuality;			// Quality Setting, HIGH BYTE should be NOT LOW byte, otherwhise quality=5
+        // FUTURE USE, SET TO 0, align strucutre to 331 bytes
+        //[ MarshalAs( UnmanagedType.ByValArray, SizeConst=255-4*4-2 )]
+        //public byte[]	 btReserved;//[255-4*sizeof(DWORD) - sizeof( WORD )];
+
+        public LHV1(AudioPCMConfig format, uint MpeBitRate, uint quality)
+        {
+            dwStructVersion = 1;
+            dwStructSize = (uint)Marshal.SizeOf(typeof(BE_CONFIG));
+            switch (format.SampleRate)
+            {
+                case 16000:
+                case 22050:
+                case 24000:
+                    dwMpegVersion = MPEG2;
+                    break;
+                case 32000:
+                case 44100:
+                case 48000:
+                    dwMpegVersion = MPEG1;
+                    break;
+                default:
+                    throw new ArgumentOutOfRangeException("format", "Unsupported sample rate");
+            }
+            dwSampleRate = (uint)format.SampleRate;	// INPUT FREQUENCY
+            dwReSampleRate = 0;		// DON'T RESAMPLE
+            switch (format.ChannelCount)
+            {
+                case 1:
+                    nMode = MpegMode.MONO;
+                    break;
+                case 2:
+                    nMode = MpegMode.STEREO;
+                    break;
+                default:
+                    throw new ArgumentOutOfRangeException("format", "Invalid number of channels");
+            }
+            switch (MpeBitRate)
+            {
+                case 0:
+                case 32:
+                case 40:
+                case 48:
+                case 56:
+                case 64:
+                case 80:
+                case 96:
+                case 112:
+                case 128:
+                case 160: //Allowed bit rates in MPEG1 and MPEG2
+                    break;
+                case 192:
+                case 224:
+                case 256:
+                case 320: //Allowed only in MPEG1
+                    if (dwMpegVersion != MPEG1)
+                    {
+                        throw new ArgumentOutOfRangeException("MpsBitRate", "Bit rate not compatible with input format");
+                    }
+                    break;
+                case 8:
+                case 16:
+                case 24:
+                case 144: //Allowed only in MPEG2
+                    if (dwMpegVersion != MPEG2)
+                    {
+                        throw new ArgumentOutOfRangeException("MpsBitRate", "Bit rate not compatible with input format");
+                    }
+                    break;
+                default:
+                    throw new ArgumentOutOfRangeException("MpsBitRate", "Unsupported bit rate");
+            }
+            dwBitrate = MpeBitRate;		// MINIMUM BIT RATE
+            nPreset = LAME_QUALITY_PRESET.LQP_NORMAL_QUALITY;		// QUALITY PRESET SETTING
+            dwPsyModel = 0;		// USE DEFAULT PSYCHOACOUSTIC MODEL 
+            dwEmphasis = 0;		// NO EMPHASIS TURNED ON
+            bOriginal = 1;		// SET ORIGINAL FLAG
+            bWriteVBRHeader = 0;
+            bNoRes = 0;		// No Bit resorvoir
+            bCopyright = 0;
+            bCRC = 0;
+            bEnableVBR = 0;
+            bPrivate = 0;
+            bStrictIso = 0;
+            dwMaxBitrate = 0;
+            dwVbrAbr_bps = 0;
+            nQuality = (ushort)(quality | ((~quality) << 8));
+            nVbrMethod = VBRMETHOD.VBR_METHOD_NONE;
+            nVBRQuality = 0;
+        }
+    }
+}
diff --git a/CUETools.Codecs.LAME/Interop/Lame_encDLL.cs b/CUETools.Codecs.LAME/Interop/Lame_encDLL.cs
new file mode 100644
index 0000000..c8845b7
--- /dev/null
+++ b/CUETools.Codecs.LAME/Interop/Lame_encDLL.cs
@@ -0,0 +1,161 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace CUETools.Codecs.LAME.Interop
+{
+    /// <summary>
+    /// Lame_enc DLL functions
+    /// </summary>
+    public class Lame_encDll
+    {
+        //Error codes
+        public const uint BE_ERR_SUCCESSFUL = 0;
+        public const uint BE_ERR_INVALID_FORMAT = 1;
+        public const uint BE_ERR_INVALID_FORMAT_PARAMETERS = 2;
+        public const uint BE_ERR_NO_MORE_HANDLES = 3;
+        public const uint BE_ERR_INVALID_HANDLE = 4;
+
+        /// <summary>
+        /// This function is the first to call before starting an encoding stream.
+        /// </summary>
+        /// <param name="pbeConfig">Encoder settings</param>
+        /// <param name="dwSamples">Receives the number of samples (not bytes, each sample is a SHORT) to send to each beEncodeChunk() on return.</param>
+        /// <param name="dwBufferSize">Receives the minimun number of bytes that must have the output(result) buffer</param>
+        /// <param name="phbeStream">Receives the stream handle on return</param>
+        /// <returns>On success: BE_ERR_SUCCESSFUL</returns>
+        [DllImport("Lame_enc.dll")]
+        public static extern uint beInitStream(BE_CONFIG pbeConfig, ref uint dwSamples, ref uint dwBufferSize, ref uint phbeStream);
+
+        /// <summary>
+        /// Encodes a chunk of samples. Please note that if you have set the output to 
+        /// generate mono MP3 files you must feed beEncodeChunk() with mono samples
+        /// </summary>
+        /// <param name="hbeStream">Handle of the stream.</param>
+        /// <param name="nSamples">Number of samples to be encoded for this call. 
+        /// This should be identical to what is returned by beInitStream(), 
+        /// unless you are encoding the last chunk, which might be smaller.</param>
+        /// <param name="pInSamples">Array of 16-bit signed samples to be encoded. 
+        /// These should be in stereo when encoding a stereo MP3 
+        /// and mono when encoding a mono MP3</param>
+        /// <param name="pOutput">Buffer where to write the encoded data. 
+        /// This buffer should be at least of the minimum size returned by beInitStream().</param>
+        /// <param name="pdwOutput">Returns the number of bytes of encoded data written. 
+        /// The amount of data written might vary from chunk to chunk</param>
+        /// <returns>On success: BE_ERR_SUCCESSFUL</returns>
+        [DllImport("Lame_enc.dll")]
+        public static extern uint beEncodeChunk(uint hbeStream, uint nSamples, short[] pInSamples, [In, Out] byte[] pOutput, ref uint pdwOutput);
+
+        /// <summary>
+        /// Encodes a chunk of samples. Please note that if you have set the output to 
+        /// generate mono MP3 files you must feed beEncodeChunk() with mono samples
+        /// </summary>
+        /// <param name="hbeStream">Handle of the stream.</param>
+        /// <param name="nSamples">Number of samples to be encoded for this call. 
+        /// This should be identical to what is returned by beInitStream(), 
+        /// unless you are encoding the last chunk, which might be smaller.</param>
+        /// <param name="pSamples">Pointer at the 16-bit signed samples to be encoded. 
+        /// InPtr is used to pass any type of array without need of make memory copy, 
+        /// then gaining in performance. Note that nSamples is not the number of bytes,
+        /// but samples (is sample is a SHORT)</param>
+        /// <param name="pOutput">Buffer where to write the encoded data. 
+        /// This buffer should be at least of the minimum size returned by beInitStream().</param>
+        /// <param name="pdwOutput">Returns the number of bytes of encoded data written. 
+        /// The amount of data written might vary from chunk to chunk</param>
+        /// <returns>On success: BE_ERR_SUCCESSFUL</returns>
+        [DllImport("Lame_enc.dll")]
+        protected static extern uint beEncodeChunk(uint hbeStream, uint nSamples, IntPtr pSamples, IntPtr pOutput, ref uint pdwOutput);
+
+        /// <summary>
+        /// Encodes a chunk of samples. Samples are contained in a byte array
+        /// </summary>
+        /// <param name="hbeStream">Handle of the stream.</param>
+        /// <param name="buffer">Bytes to encode</param>
+        /// <param name="index">Position of the first byte to encode</param>
+        /// <param name="nBytes">Number of bytes to encode (not samples, samples are two byte lenght)</param>
+        /// <param name="pOutput">Buffer where to write the encoded data.
+        /// This buffer should be at least of the minimum size returned by beInitStream().</param>
+        /// <param name="pdwOutput">Returns the number of bytes of encoded data written. 
+        /// The amount of data written might vary from chunk to chunk</param>
+        /// <returns>On success: BE_ERR_SUCCESSFUL</returns>
+        public static unsafe uint EncodeChunk(uint hbeStream, byte* pSamples, uint nBytes, byte* pOutput, ref uint pdwOutput)
+        {
+            return beEncodeChunk(hbeStream, nBytes / 2/*Samples*/, (IntPtr)pSamples, (IntPtr)pOutput, ref pdwOutput);
+        }
+
+        /// <summary>
+        /// Encodes a chunk of samples. Samples are contained in a byte array
+        /// </summary>
+        /// <param name="hbeStream">Handle of the stream.</param>
+        /// <param name="buffer">Bytes to encode</param>
+        /// <param name="index">Position of the first byte to encode</param>
+        /// <param name="nBytes">Number of bytes to encode (not samples, samples are two byte lenght)</param>
+        /// <param name="pOutput">Buffer where to write the encoded data.
+        /// This buffer should be at least of the minimum size returned by beInitStream().</param>
+        /// <param name="pdwOutput">Returns the number of bytes of encoded data written. 
+        /// The amount of data written might vary from chunk to chunk</param>
+        /// <returns>On success: BE_ERR_SUCCESSFUL</returns>
+        public static unsafe uint EncodeChunk(uint hbeStream, byte[] Samples, int index, uint nBytes, byte[] Output, ref uint pdwOutput)
+        {
+            fixed (byte* pSamples = &Samples[index], pOutput = Output)
+                return beEncodeChunk(hbeStream, nBytes / 2/*Samples*/, (IntPtr)pSamples, (IntPtr)pOutput, ref pdwOutput);
+        }
+
+        /// <summary>
+        /// Encodes a chunk of samples. Samples are contained in a byte array
+        /// </summary>
+        /// <param name="hbeStream">Handle of the stream.</param>
+        /// <param name="buffer">Bytes to encode</param>
+        /// <param name="pOutput">Buffer where to write the encoded data.
+        /// This buffer should be at least of the minimum size returned by beInitStream().</param>
+        /// <param name="pdwOutput">Returns the number of bytes of encoded data written. 
+        /// The amount of data written might vary from chunk to chunk</param>
+        /// <returns>On success: BE_ERR_SUCCESSFUL</returns>
+        public static uint EncodeChunk(uint hbeStream, byte[] buffer, byte[] pOutput, ref uint pdwOutput)
+        {
+            return EncodeChunk(hbeStream, buffer, 0, (uint)buffer.Length, pOutput, ref pdwOutput);
+        }
+
+        /// <summary>
+        /// This function should be called after encoding the last chunk in order to flush 
+        /// the encoder. It writes any encoded data that still might be left inside the 
+        /// encoder to the output buffer. This function should NOT be called unless 
+        /// you have encoded all of the chunks in your stream.
+        /// </summary>
+        /// <param name="hbeStream">Handle of the stream.</param>
+        /// <param name="pOutput">Where to write the encoded data. This buffer should be 
+        /// at least of the minimum size returned by beInitStream().</param>
+        /// <param name="pdwOutput">Returns number of bytes of encoded data written.</param>
+        /// <returns>On success: BE_ERR_SUCCESSFUL</returns>
+        [DllImport("Lame_enc.dll")]
+        public static extern uint beDeinitStream(uint hbeStream, [In, Out] byte[] pOutput, ref uint pdwOutput);
+
+        /// <summary>
+        /// Last function to be called when finished encoding a stream. 
+        /// Should unlike beDeinitStream() also be called if the encoding is canceled.
+        /// </summary>
+        /// <param name="hbeStream">Handle of the stream.</param>
+        /// <returns>On success: BE_ERR_SUCCESSFUL</returns>
+        [DllImport("Lame_enc.dll")]
+        public static extern uint beCloseStream(uint hbeStream);
+
+        /// <summary>
+        /// Returns information like version numbers (both of the DLL and encoding engine), 
+        /// release date and URL for lame_enc's homepage. 
+        /// All this information should be made available to the user of your product 
+        /// through a dialog box or something similar.
+        /// </summary>
+        /// <param name="pbeVersion"Where version number, release date and URL for homepage 
+        /// is returned.</param>
+        [DllImport("Lame_enc.dll")]
+        public static extern void beVersion([Out] BE_VERSION pbeVersion);
+
+        [DllImport("Lame_enc.dll", CharSet = CharSet.Ansi)]
+        public static extern void beWriteVBRHeader(string pszMP3FileName);
+        [DllImport("Lame_enc.dll")]
+        public static extern uint beEncodeChunkFloatS16NI(uint hbeStream, uint nSamples, [In]float[] buffer_l, [In]float[] buffer_r, [In, Out]byte[] pOutput, ref uint pdwOutput);
+        [DllImport("Lame_enc.dll")]
+        public static extern uint beFlushNoGap(uint hbeStream, [In, Out]byte[] pOutput, ref uint pdwOutput);
+        [DllImport("Lame_enc.dll", CharSet = CharSet.Ansi)]
+        public static extern uint beWriteInfoTag(uint hbeStream, string lpszFileName);
+    }
+}
diff --git a/CUETools.Codecs.LAME/Interop/License.txt b/CUETools.Codecs.LAME/Interop/License.txt
new file mode 100644
index 0000000..98974bd
--- /dev/null
+++ b/CUETools.Codecs.LAME/Interop/License.txt
@@ -0,0 +1,25 @@
+THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
+KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
+PURPOSE. IT CAN BE DISTRIBUTED FREE OF CHARGE AS LONG AS THIS HEADER 
+REMAINS UNCHANGED.
+
+Email:	yetiicb@hotmail.com
+
+Copyright (C) 2002-2003 Idael Cardoso. 
+	
+LAME ( LAME Ain't an Mp3 Encoder ) 
+You must call the fucntion "beVersion" to obtain information  like version 
+numbers (both of the DLL and encoding engine), release date and URL for 
+lame_enc's homepage. All this information should be made available to the 
+user of your product through a dialog box or something similar.
+You must see all information about LAME project and legal license infos at 
+http://www.mp3dev.org/	The official LAME site
+
+
+About Thomson and/or Fraunhofer patents:
+Any use of this product does not convey a license under the relevant 
+intellectual property of Thomson and/or Fraunhofer Gesellschaft nor imply 
+any right to use this product in any finished end user or ready-to-use final 
+product. An independent license for such use is required. 
+For details, please visit http://www.mp3licensing.com.
\ No newline at end of file
diff --git a/CUETools.Codecs.LAME/Interop/MP3.cs b/CUETools.Codecs.LAME/Interop/MP3.cs
new file mode 100644
index 0000000..3d16965
--- /dev/null
+++ b/CUETools.Codecs.LAME/Interop/MP3.cs
@@ -0,0 +1,17 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace CUETools.Codecs.LAME.Interop
+{
+    [StructLayout(LayoutKind.Sequential), Serializable]
+    public struct MP3 //BE_CONFIG_MP3
+    {
+        public uint dwSampleRate;		// 48000, 44100 and 32000 allowed
+        public byte byMode;			// BE_MP3_MODE_STEREO, BE_MP3_MODE_DUALCHANNEL, BE_MP3_MODE_MONO
+        public ushort wBitrate;		// 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256 and 320 allowed
+        public int bPrivate;
+        public int bCRC;
+        public int bCopyright;
+        public int bOriginal;
+    }
+}
diff --git a/CUETools.Codecs.LAME/Interop/MpegMode.cs b/CUETools.Codecs.LAME/Interop/MpegMode.cs
new file mode 100644
index 0000000..63a2925
--- /dev/null
+++ b/CUETools.Codecs.LAME/Interop/MpegMode.cs
@@ -0,0 +1,13 @@
+namespace CUETools.Codecs.LAME.Interop
+{
+    /* MPEG modes */
+    public enum MpegMode : uint
+    {
+        STEREO = 0,
+        JOINT_STEREO,
+        DUAL_CHANNEL,	 /* LAME doesn't supports this! */
+        MONO,
+        NOT_SET,
+        MAX_INDICATOR	 /* Don't use this! It's used for sanity checks. */
+    }
+}
diff --git a/CUETools.Codecs.LAME/Interop/VBRMETHOD.cs b/CUETools.Codecs.LAME/Interop/VBRMETHOD.cs
new file mode 100644
index 0000000..9545054
--- /dev/null
+++ b/CUETools.Codecs.LAME/Interop/VBRMETHOD.cs
@@ -0,0 +1,12 @@
+namespace CUETools.Codecs.LAME.Interop
+{
+    public enum VBRMETHOD : int
+    {
+        VBR_METHOD_NONE = -1,
+        VBR_METHOD_DEFAULT = 0,
+        VBR_METHOD_OLD = 1,
+        VBR_METHOD_NEW = 2,
+        VBR_METHOD_MTRH = 3,
+        VBR_METHOD_ABR = 4
+    }
+}
diff --git a/CUETools.Codecs.LAME/LAMEEncoder.cs b/CUETools.Codecs.LAME/LAMEEncoder.cs
new file mode 100644
index 0000000..2791ca2
--- /dev/null
+++ b/CUETools.Codecs.LAME/LAMEEncoder.cs
@@ -0,0 +1,281 @@
+using System;
+using System.IO;
+using System.Text;
+using CUETools.Codecs.LAME.Interop;
+
+namespace CUETools.Codecs.LAME
+{
+    public class LAMEEncoder : IAudioDest
+    {
+        private bool closed = false;
+        private BE_CONFIG m_Mp3Config = null;
+        private uint m_hLameStream = 0;
+        private uint m_InputSamples = 0;
+        private uint m_OutBufferSize = 0;
+        private byte[] m_InBuffer = null;
+        private int m_InBufferPos = 0;
+        private byte[] m_OutBuffer = null;
+        private AudioPCMConfig _pcm;
+        private string _path;
+        private Stream _IO;
+        private long position = 0, sample_count = -1;
+        private long bytesWritten = 0;
+        private bool inited = false;
+
+        public virtual int CompressionLevel
+        {
+            get
+            {
+                return 0;
+            }
+            set
+            {
+                if (value != 0)
+                    throw new Exception("unsupported compression level");
+            }
+        }
+
+        public virtual object Settings
+        {
+            get
+            {
+                return null;
+            }
+            set
+            {
+                if (value != null && value.GetType() != typeof(object))
+                    throw new Exception("Unsupported options " + value);
+            }
+        }
+
+        public long Padding
+        {
+            set { }
+        }
+
+        public long Position
+        {
+            get { return position; }
+        }
+
+        public long FinalSampleCount
+        {
+            set { sample_count = (int)value; }
+        }
+
+        public long BlockSize
+        {
+            set { }
+            get { return 0; }
+        }
+
+        public AudioPCMConfig PCM
+        {
+            get { return _pcm; }
+        }
+
+        public string Path { get { return _path; } }
+
+        public long BytesWritten
+        {
+            get { return bytesWritten; }
+        }
+
+        public LAMEEncoder(string path, Stream IO, AudioPCMConfig pcm)
+        {
+            if (pcm.BitsPerSample != 16)// && pcm.BitsPerSample != 32)
+                throw new ArgumentOutOfRangeException("format", "Only 16 & 32 bits samples supported");
+            _pcm = pcm;
+            _path = path;
+            _IO = IO;
+        }
+
+        public LAMEEncoder(string path, AudioPCMConfig pcm)
+            : this(path, null, pcm)
+        {
+        }
+
+        public void DeInit(bool flush)
+        {
+            if (!inited || closed)
+                return;
+
+            try
+            {
+                if (flush)
+                {
+                    uint EncodedSize = 0;
+                    if (m_InBufferPos > 0)
+                    {
+                        if (Lame_encDll.EncodeChunk(m_hLameStream, m_InBuffer, 0, (uint)m_InBufferPos, m_OutBuffer, ref EncodedSize) == Lame_encDll.BE_ERR_SUCCESSFUL)
+                        {
+                            if (EncodedSize > 0)
+                            {
+                                _IO.Write(m_OutBuffer, 0, (int)EncodedSize);
+                                bytesWritten += EncodedSize;
+                            }
+                        }
+                    }
+                    EncodedSize = 0;
+                    if (Lame_encDll.beDeinitStream(m_hLameStream, m_OutBuffer, ref EncodedSize) == Lame_encDll.BE_ERR_SUCCESSFUL)
+                    {
+                        if (EncodedSize > 0)
+                        {
+                            _IO.Write(m_OutBuffer, 0, (int)EncodedSize);
+                            bytesWritten += EncodedSize;
+                        }
+                    }
+                }
+            }
+            finally
+            {
+                Lame_encDll.beCloseStream(m_hLameStream);
+                _IO.Close();
+                closed = true;
+            }
+        }
+
+        public void Close()
+        {
+            bool needTag = !closed && _path != null && _path != "";
+            DeInit(true);
+            if (needTag)
+            {
+                bool utf8Required = Encoding.Default.GetString(Encoding.Default.GetBytes(_path)) != _path;
+                var tempDir = System.IO.Path.Combine(System.IO.Path.GetPathRoot(_path), "Temp");
+                var tempName = utf8Required ? System.IO.Path.Combine(tempDir, Guid.NewGuid().ToString()) : _path;
+                try
+                {
+                    if (utf8Required && !Directory.Exists(tempDir)) Directory.CreateDirectory(tempDir);
+                    if (utf8Required) File.Move(_path, tempName);
+                    Lame_encDll.beWriteInfoTag(m_hLameStream, tempName);
+                    if (utf8Required) File.Move(tempName, _path);
+                }
+                catch
+                {
+                    if (utf8Required) File.Move(tempName, _path);
+                }
+            }
+        }
+
+        public void Delete()
+        {
+            if (!closed)
+            {
+                DeInit(false);
+                if (_path != "")
+                    File.Delete(_path);
+            }
+        }
+
+        protected virtual BE_CONFIG MakeConfig()
+        {
+            return new BE_CONFIG(_pcm);
+        }
+
+        private void Init()
+        {
+            if (inited)
+                return;
+
+            m_Mp3Config = MakeConfig();
+
+            uint LameResult = Lame_encDll.beInitStream(m_Mp3Config, ref m_InputSamples, ref m_OutBufferSize, ref m_hLameStream);
+            if (LameResult != Lame_encDll.BE_ERR_SUCCESSFUL)
+                throw new ApplicationException(string.Format("Lame_encDll.beInitStream failed with the error code {0}", LameResult));
+
+            m_InBuffer = new byte[m_InputSamples * 2]; //Input buffer is expected as short[]
+            m_OutBuffer = new byte[Math.Max(65536, m_OutBufferSize)];
+
+            if (_IO == null)
+                _IO = new FileStream(_path, FileMode.Create, FileAccess.Write, FileShare.Read);
+
+            inited = true;
+        }
+
+        public unsafe void Write(AudioBuffer buff)
+        {
+            buff.Prepare(this);
+
+            Init();
+
+            byte[] buffer = buff.Bytes;
+            int index = 0;
+            int count = buff.ByteLength;
+
+            int ToCopy = 0;
+            uint EncodedSize = 0;
+            uint LameResult;
+            uint outBufferIndex = 0;
+            fixed (byte* pBuffer = buffer, pOutBuffer = m_OutBuffer)
+            {
+                while (count > 0)
+                {
+                    if (m_InBufferPos > 0)
+                    {
+                        ToCopy = Math.Min(count, m_InBuffer.Length - m_InBufferPos);
+                        Buffer.BlockCopy(buffer, index, m_InBuffer, m_InBufferPos, ToCopy);
+                        m_InBufferPos += ToCopy;
+                        index += ToCopy;
+                        count -= ToCopy;
+                        if (m_InBufferPos >= m_InBuffer.Length)
+                        {
+                            m_InBufferPos = 0;
+                            if (outBufferIndex > 0)
+                            {
+                                _IO.Write(m_OutBuffer, 0, (int)outBufferIndex);
+                                bytesWritten += outBufferIndex;
+                                outBufferIndex = 0;
+                            }
+
+                            if ((LameResult = Lame_encDll.EncodeChunk(m_hLameStream, m_InBuffer, m_OutBuffer, ref EncodedSize)) == Lame_encDll.BE_ERR_SUCCESSFUL)
+                            {
+                                outBufferIndex += EncodedSize;
+                            }
+                            else
+                            {
+                                throw new ApplicationException(string.Format("Lame_encDll.EncodeChunk failed with the error code {0}", LameResult));
+                            }
+                        }
+                    }
+                    else
+                    {
+                        if (count >= m_InBuffer.Length)
+                        {
+                            if (outBufferIndex + m_OutBufferSize > m_OutBuffer.Length)
+                            {
+                                _IO.Write(m_OutBuffer, 0, (int)outBufferIndex);
+                                bytesWritten += outBufferIndex;
+                                outBufferIndex = 0;
+                            }
+
+                            if ((LameResult = Lame_encDll.EncodeChunk(m_hLameStream, pBuffer + index, (uint)m_InBuffer.Length, pOutBuffer + outBufferIndex, ref EncodedSize)) == Lame_encDll.BE_ERR_SUCCESSFUL)
+                            {
+                                outBufferIndex += EncodedSize;
+                            }
+                            else
+                            {
+                                throw new ApplicationException(string.Format("Lame_encDll.EncodeChunk failed with the error code {0}", LameResult));
+                            }
+                            count -= m_InBuffer.Length;
+                            index += m_InBuffer.Length;
+                        }
+                        else
+                        {
+                            Buffer.BlockCopy(buffer, index, m_InBuffer, 0, count);
+                            m_InBufferPos = count;
+                            index += count;
+                            count = 0;
+                        }
+                    }
+                }
+            }
+
+            if (outBufferIndex > 0)
+            {
+                _IO.Write(m_OutBuffer, 0, (int)outBufferIndex);
+                bytesWritten += outBufferIndex;
+            }
+        }
+    }
+}
diff --git a/CUETools.Codecs.LAME/LAMEEncoderCBR.cs b/CUETools.Codecs.LAME/LAMEEncoderCBR.cs
new file mode 100644
index 0000000..8ea8d1d
--- /dev/null
+++ b/CUETools.Codecs.LAME/LAMEEncoderCBR.cs
@@ -0,0 +1,70 @@
+using System;
+using System.IO;
+using CUETools.Codecs.LAME.Interop;
+
+namespace CUETools.Codecs.LAME
+{
+    [AudioEncoderClass("lame CBR", "mp3", false, "96 128 192 256 320", "256", 2, typeof(LAMEEncoderCBRSettings))]
+    public class LAMEEncoderCBR : LAMEEncoder
+    {
+        private static readonly uint[] bps_table = new uint[] { 96, 128, 192, 256, 320 };
+
+        private uint bps;
+        private LAMEEncoderCBRSettings _settings = new LAMEEncoderCBRSettings();
+
+        public override object Settings
+        {
+            get
+            {
+                return _settings;
+            }
+            set
+            {
+                if (value as LAMEEncoderCBRSettings == null)
+                    throw new Exception("Unsupported options " + value);
+                _settings = value as LAMEEncoderCBRSettings;
+            }
+        }
+
+        public override int CompressionLevel
+        {
+            get
+            {
+                for (int i = 0; i < bps_table.Length; i++)
+                {
+                    if (bps == bps_table[i])
+                    {
+                        return i;
+                    }
+                }
+                return -1;
+            }
+            set
+            {
+                if (value < 0 || value > bps_table.Length)
+                    throw new Exception("unsupported compression level");
+                bps = bps_table[value];
+            }
+        }
+
+        public LAMEEncoderCBR(string path, Stream IO, AudioPCMConfig pcm)
+            : base(path, IO, pcm)
+        {
+        }
+
+        public LAMEEncoderCBR(string path, AudioPCMConfig pcm)
+            : base(path, null, pcm)
+        {
+        }
+
+        protected override BE_CONFIG MakeConfig()
+        {
+            BE_CONFIG Mp3Config = new BE_CONFIG(PCM, _settings.CustomBitrate > 0 ? (uint)_settings.CustomBitrate : bps, 5);
+            Mp3Config.format.lhv1.bWriteVBRHeader = 1;
+            Mp3Config.format.lhv1.nMode = _settings.StereoMode;
+            //Mp3Config.format.lhv1.nVbrMethod = VBRMETHOD.VBR_METHOD_NONE; // --cbr
+            //Mp3Config.format.lhv1.nPreset = LAME_QUALITY_PRESET.LQP_NORMAL_QUALITY;
+            return Mp3Config;
+        }
+    }
+}
diff --git a/CUETools.Codecs.LAME/LAMEEncoderCBRSettings.cs b/CUETools.Codecs.LAME/LAMEEncoderCBRSettings.cs
new file mode 100644
index 0000000..199d24b
--- /dev/null
+++ b/CUETools.Codecs.LAME/LAMEEncoderCBRSettings.cs
@@ -0,0 +1,23 @@
+using System.ComponentModel;
+using CUETools.Codecs.LAME.Interop;
+
+namespace CUETools.Codecs.LAME
+{
+    public class LAMEEncoderCBRSettings
+    {
+        [DefaultValue(0)]
+        public int CustomBitrate { get; set; }
+
+        [DefaultValue(MpegMode.STEREO)]
+        public MpegMode StereoMode { get; set; }
+
+        public LAMEEncoderCBRSettings()
+        {
+            // Iterate through each property and call ResetValue()
+            foreach (PropertyDescriptor property in TypeDescriptor.GetProperties(this))
+            {
+                property.ResetValue(this);
+            }
+        }
+    }
+}
diff --git a/CUETools.Codecs.LAME/LAMEEncoderVBR.cs b/CUETools.Codecs.LAME/LAMEEncoderVBR.cs
new file mode 100644
index 0000000..30a4e07
--- /dev/null
+++ b/CUETools.Codecs.LAME/LAMEEncoderVBR.cs
@@ -0,0 +1,62 @@
+using System;
+using System.IO;
+using CUETools.Codecs.LAME.Interop;
+
+namespace CUETools.Codecs.LAME
+{
+    [AudioEncoderClass("lame VBR", "mp3", false, "V9 V8 V7 V6 V5 V4 V3 V2 V1 V0", "V2", 2, typeof(LAMEEncoderVBRSettings))]
+    public class LAMEEncoderVBR : LAMEEncoder
+    {
+        private int quality = 0;
+        private LAMEEncoderVBRSettings _settings = new LAMEEncoderVBRSettings();
+
+        public override int CompressionLevel
+        {
+            get
+            {
+                return 9 - quality;
+            }
+            set
+            {
+                if (value < 0 || value > 9)
+                    throw new Exception("unsupported compression level");
+                quality = 9 - value;
+            }
+        }
+
+        public override object Settings
+        {
+            get
+            {
+                return _settings;
+            }
+            set
+            {
+                if (value as LAMEEncoderVBRSettings == null)
+                    throw new Exception("Unsupported options " + value);
+                _settings = value as LAMEEncoderVBRSettings;
+            }
+        }
+
+        public LAMEEncoderVBR(string path, Stream IO, AudioPCMConfig pcm)
+            : base(path, IO, pcm)
+        {
+        }
+
+        public LAMEEncoderVBR(string path, AudioPCMConfig pcm)
+            : base(path, null, pcm)
+        {
+        }
+
+        protected override BE_CONFIG MakeConfig()
+        {
+            BE_CONFIG Mp3Config = new BE_CONFIG(PCM, 0, (uint)_settings.Quality);
+            Mp3Config.format.lhv1.bWriteVBRHeader = 1;
+            Mp3Config.format.lhv1.nMode = MpegMode.JOINT_STEREO;
+            Mp3Config.format.lhv1.bEnableVBR = 1;
+            Mp3Config.format.lhv1.nVBRQuality = quality;
+            Mp3Config.format.lhv1.nVbrMethod = VBRMETHOD.VBR_METHOD_NEW; // --vbr-new
+            return Mp3Config;
+        }
+    }
+}
diff --git a/CUETools.Codecs.LAME/LAMEEncoderVBRProcessingQuality.cs b/CUETools.Codecs.LAME/LAMEEncoderVBRProcessingQuality.cs
new file mode 100644
index 0000000..d07b74b
--- /dev/null
+++ b/CUETools.Codecs.LAME/LAMEEncoderVBRProcessingQuality.cs
@@ -0,0 +1,8 @@
+namespace CUETools.Codecs.LAME
+{
+    public enum LAMEEncoderVBRProcessingQuality : uint
+    {
+        Best = 0,
+        Normal = 5,
+    }
+}
diff --git a/CUETools.Codecs.LAME/LAMEEncoderVBRSettings.cs b/CUETools.Codecs.LAME/LAMEEncoderVBRSettings.cs
new file mode 100644
index 0000000..e77dfc0
--- /dev/null
+++ b/CUETools.Codecs.LAME/LAMEEncoderVBRSettings.cs
@@ -0,0 +1,18 @@
+using System.ComponentModel;
+
+namespace CUETools.Codecs.LAME
+{
+	public class LAMEEncoderVBRSettings
+	{
+		[DefaultValue(LAMEEncoderVBRProcessingQuality.Normal)]
+		public LAMEEncoderVBRProcessingQuality Quality { get; set; }
+
+		public LAMEEncoderVBRSettings()
+		{
+			// Iterate through each property and call ResetValue()
+			foreach (PropertyDescriptor property in TypeDescriptor.GetProperties(this)) {
+				property.ResetValue(this);
+            }
+		}
+	}
+}
diff --git a/CUETools.Codecs.LAME/Lame.cs b/CUETools.Codecs.LAME/Lame.cs
deleted file mode 100644
index 7f0e947..0000000
--- a/CUETools.Codecs.LAME/Lame.cs
+++ /dev/null
@@ -1,455 +0,0 @@
-//
-//
-//	THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
-//	KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
-//	IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
-//	PURPOSE. IT CAN BE DISTRIBUTED FREE OF CHARGE AS LONG AS THIS HEADER 
-//	REMAINS UNCHANGED.
-//
-//	Email:	yetiicb@hotmail.com
-//
-//	Copyright (C) 2002-2003 Idael Cardoso. 
-//	
-//	LAME ( LAME Ain't an Mp3 Encoder ) 
-//	You must call the fucntion "beVersion" to obtain information  like version 
-//	numbers (both of the DLL and encoding engine), release date and URL for 
-//	lame_enc's homepage. All this information should be made available to the 
-//	user of your product through a dialog box or something similar.
-//	You must see all information about LAME project and legal license infos at 
-//	http://www.mp3dev.org/	The official LAME site
-//
-//
-//	About Thomson and/or Fraunhofer patents:
-//	Any use of this product does not convey a license under the relevant 
-//	intellectual property of Thomson and/or Fraunhofer Gesellschaft nor imply 
-//	any right to use this product in any finished end user or ready-to-use final 
-//	product. An independent license for such use is required. 
-//	For details, please visit http://www.mp3licensing.com.
-//
-
-using System;
-using System.Runtime.InteropServices;
-using System.Runtime.Serialization;
-using CUETools.Codecs;
-
-namespace CUETools.Codecs.LAME
-{
-	public enum VBRMETHOD : int
-	{
-		VBR_METHOD_NONE			= -1,
-		VBR_METHOD_DEFAULT	=	0,
-		VBR_METHOD_OLD			=	1,
-		VBR_METHOD_NEW			=	2,
-		VBR_METHOD_MTRH			=	3,
-		VBR_METHOD_ABR			=	4
-	} 
-
-	/* MPEG modes */
-	public enum MpegMode : uint 
-	{
-		STEREO = 0,
-		JOINT_STEREO,
-		DUAL_CHANNEL,	 /* LAME doesn't supports this! */
-		MONO,
-		NOT_SET,
-		MAX_INDICATOR	 /* Don't use this! It's used for sanity checks. */ 
-	}
-
-	public enum LAME_QUALITY_PRESET : int
-	{
-		LQP_NOPRESET			=-1,
-		// QUALITY PRESETS
-		LQP_NORMAL_QUALITY		= 0,
-		LQP_LOW_QUALITY			= 1,
-		LQP_HIGH_QUALITY		= 2,
-		LQP_VOICE_QUALITY		= 3,
-		LQP_R3MIX	= 4,
-		LQP_VERYHIGH_QUALITY	= 5,
-		LQP_STANDARD			= 6,
-		LQP_FAST_STANDARD		= 7,
-		LQP_EXTREME	= 8,
-		LQP_FAST_EXTREME		= 9,
-		LQP_INSANE	= 10,
-		LQP_ABR		= 11,
-		LQP_CBR		= 12,
-		LQP_MEDIUM	= 13,
-		LQP_FAST_MEDIUM			= 14,
-		// NEW PRESET VALUES
-		LQP_PHONE	=1000,
-		LQP_SW		=2000,
-		LQP_AM		=3000,
-		LQP_FM		=4000,
-		LQP_VOICE	=5000,
-		LQP_RADIO	=6000,
-		LQP_TAPE	=7000,
-		LQP_HIFI	=8000,
-		LQP_CD		=9000,
-		LQP_STUDIO	=10000
-	} 
-		
-	[StructLayout(LayoutKind.Sequential), Serializable]
-	public struct	MP3 //BE_CONFIG_MP3
-	{
-		public uint	 dwSampleRate;		// 48000, 44100 and 32000 allowed
-		public byte		byMode;			// BE_MP3_MODE_STEREO, BE_MP3_MODE_DUALCHANNEL, BE_MP3_MODE_MONO
-		public ushort	wBitrate;		// 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256 and 320 allowed
-		public int		bPrivate;		
-		public int		bCRC;
-		public int		bCopyright;
-		public int		bOriginal;
-	} 
-
-	[StructLayout(LayoutKind.Sequential, Size=327), Serializable]
-	public struct LHV1 // BE_CONFIG_LAME LAME header version 1
-	{
-		public const uint MPEG1	= 1;
-		public const uint MPEG2	= 0;
-
-		// STRUCTURE INFORMATION
-		public uint			dwStructVersion;	
-		public uint			dwStructSize;
-		// BASIC ENCODER SETTINGS
-		public uint			dwSampleRate;		// SAMPLERATE OF INPUT FILE
-		public uint			dwReSampleRate;		// DOWNSAMPLERATE, 0=ENCODER DECIDES	
-		public MpegMode			nMode;	// STEREO, MONO
-		public uint			dwBitrate;			// CBR bitrate, VBR min bitrate
-		public uint			dwMaxBitrate;		// CBR ignored, VBR Max bitrate
-		public LAME_QUALITY_PRESET			nPreset;			// Quality preset
-		public uint			dwMpegVersion;		// MPEG-1 OR MPEG-2
-		public uint			dwPsyModel;			// FUTURE USE, SET TO 0
-		public uint			dwEmphasis;			// FUTURE USE, SET TO 0
-		// BIT STREAM SETTINGS
-		public int			bPrivate;			// Set Private Bit (TRUE/FALSE)
-		public int			bCRC;	// Insert CRC (TRUE/FALSE)
-		public int			bCopyright;			// Set Copyright Bit (TRUE/FALSE)
-		public int			bOriginal;			// Set Original Bit (TRUE/FALSE)
-		// VBR STUFF
-		public int			bWriteVBRHeader;	// WRITE XING VBR HEADER (TRUE/FALSE)
-		public int			bEnableVBR;			// USE VBR ENCODING (TRUE/FALSE)
-		public int			nVBRQuality;		// VBR QUALITY 0..9
-		public uint			dwVbrAbr_bps;		// Use ABR in stead of nVBRQuality
-		public VBRMETHOD		nVbrMethod;
-		public int			bNoRes;	// Disable Bit resorvoir (TRUE/FALSE)
-		// MISC SETTINGS
-		public int			bStrictIso;			// Use strict ISO encoding rules (TRUE/FALSE)
-		public ushort		nQuality;			// Quality Setting, HIGH BYTE should be NOT LOW byte, otherwhise quality=5
-		// FUTURE USE, SET TO 0, align strucutre to 331 bytes
-		//[ MarshalAs( UnmanagedType.ByValArray, SizeConst=255-4*4-2 )]
-		//public byte[]	 btReserved;//[255-4*sizeof(DWORD) - sizeof( WORD )];
-
-		public LHV1(AudioPCMConfig format, uint MpeBitRate, uint quality)
-		{
-			dwStructVersion	= 1;
-			dwStructSize = (uint)Marshal.SizeOf(typeof(BE_CONFIG));
-			switch (format.SampleRate)
-			{
-			case 16000 :
-			case 22050 :
-			case 24000 :
-				dwMpegVersion		= MPEG2;
-				break;
-			case 32000 :
-			case 44100 :
-			case 48000 :
-				dwMpegVersion		= MPEG1;
-				break;
-			default :
-				throw new ArgumentOutOfRangeException("format", "Unsupported sample rate");
-			}
-			dwSampleRate = (uint)format.SampleRate;	// INPUT FREQUENCY
-			dwReSampleRate = 0;		// DON'T RESAMPLE
-			switch (format.ChannelCount)
-			{
-			case 1 :
-				nMode = MpegMode.MONO;
-				break;
-			case 2 :
-				nMode = MpegMode.STEREO;
-				break;
-			default:
-				throw new ArgumentOutOfRangeException("format", "Invalid number of channels");
-			}
-			switch (MpeBitRate)
-			{
-			case 0 :
-			case 32 :
-			case 40 :
-			case 48 :
-			case 56 :
-			case 64 :
-			case 80 :
-			case 96 :
-			case 112 :
-			case 128 :
-			case 160 : //Allowed bit rates in MPEG1 and MPEG2
-				break; 
-			case 192 :
-			case 224 :
-			case 256 :
-			case 320 : //Allowed only in MPEG1
-				if (dwMpegVersion	!= MPEG1)
-				{
-					throw new ArgumentOutOfRangeException("MpsBitRate", "Bit rate not compatible with input format");
-				}
-				break;
-			case 8 :
-			case 16 :
-			case 24 :
-			case 144 : //Allowed only in MPEG2
-				if (dwMpegVersion	!= MPEG2)
-				{
-					throw new ArgumentOutOfRangeException("MpsBitRate", "Bit rate not compatible with input format");
-				}
-				break;
-			default :
-				throw new ArgumentOutOfRangeException("MpsBitRate", "Unsupported bit rate");
-			}
-			dwBitrate	= MpeBitRate;		// MINIMUM BIT RATE
-			nPreset = LAME_QUALITY_PRESET.LQP_NORMAL_QUALITY;		// QUALITY PRESET SETTING
-			dwPsyModel = 0;		// USE DEFAULT PSYCHOACOUSTIC MODEL 
-			dwEmphasis = 0;		// NO EMPHASIS TURNED ON
-			bOriginal = 1;		// SET ORIGINAL FLAG
-			bWriteVBRHeader	= 0;		
-			bNoRes = 0;		// No Bit resorvoir
-			bCopyright = 0;
-			bCRC = 0;
-			bEnableVBR = 0;
-			bPrivate = 0;
-			bStrictIso = 0;
-			dwMaxBitrate = 0;
-			dwVbrAbr_bps = 0;
-			nQuality = (ushort)(quality | ((~quality) << 8));
-			nVbrMethod = VBRMETHOD.VBR_METHOD_NONE;
-			nVBRQuality = 0;
-		}
-	}		
-
-	
-	[StructLayout(LayoutKind.Sequential), Serializable]
-	public struct	ACC
-	{
-		public uint	dwSampleRate;
-		public byte	byMode;
-		public ushort	wBitrate;
-		public byte	byEncodingMethod;
-	}
-
-	[StructLayout(LayoutKind.Explicit), Serializable]
-	public class Format
-	{
-		[FieldOffset(0)] 
-		public MP3 mp3;
-		[FieldOffset(0)]
-		public LHV1 lhv1;
-		[FieldOffset(0)]
-		public ACC acc;
-
-		public Format(AudioPCMConfig format, uint MpeBitRate, uint quality)
-		{
-			lhv1 = new LHV1(format, MpeBitRate, quality);
-		}
-	}
-
-	[StructLayout(LayoutKind.Sequential), Serializable]
-	public class BE_CONFIG
-	{
-		// encoding formats
-		public const uint BE_CONFIG_MP3	 = 0;
-		public const uint BE_CONFIG_LAME = 256;
-
-		public uint	dwConfig;	
-		public Format format;
-
-		public BE_CONFIG(AudioPCMConfig format, uint MpeBitRate, uint quality)
-		{
-			this.dwConfig = BE_CONFIG_LAME;
-			this.format = new Format(format, MpeBitRate, quality);
-		}
-		public BE_CONFIG(AudioPCMConfig format)
-			: this(format, 0, 5)
-		{
-		}
-	}
-		
-	[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi)]
-	public class BE_VERSION
-	{ 
-		public const uint BE_MAX_HOMEPAGE	= 256;
-		public byte	byDLLMajorVersion;
-		public byte	byDLLMinorVersion;
-		public byte	byMajorVersion;
-		public byte	byMinorVersion;
-		// DLL Release date
-		public byte	byDay;
-		public byte	byMonth;
-		public ushort	wYear;
-		//Homepage URL
-		[MarshalAs(UnmanagedType.ByValTStr, SizeConst=257/*BE_MAX_HOMEPAGE+1*/)]
-		public string	zHomepage;	
-		public byte	byAlphaLevel;
-		public byte	byBetaLevel;
-		public byte	byMMXEnabled;
-		[MarshalAs(UnmanagedType.ByValArray, SizeConst=125)]
-		public byte[]	btReserved;
-		public BE_VERSION()
-		{
-			btReserved = new byte[125];
-		}
-	}
-
-	/// <summary>
-	/// Lame_enc DLL functions
-	/// </summary>
-	public class Lame_encDll
-	{
-		//Error codes
-		public const uint BE_ERR_SUCCESSFUL = 0;
-		public const uint BE_ERR_INVALID_FORMAT = 1;
-		public const uint BE_ERR_INVALID_FORMAT_PARAMETERS = 2;
-		public const uint BE_ERR_NO_MORE_HANDLES = 3;
-		public const uint BE_ERR_INVALID_HANDLE = 4;
-
-		/// <summary>
-		/// This function is the first to call before starting an encoding stream.
-		/// </summary>
-		/// <param name="pbeConfig">Encoder settings</param>
-		/// <param name="dwSamples">Receives the number of samples (not bytes, each sample is a SHORT) to send to each beEncodeChunk() on return.</param>
-		/// <param name="dwBufferSize">Receives the minimun number of bytes that must have the output(result) buffer</param>
-		/// <param name="phbeStream">Receives the stream handle on return</param>
-		/// <returns>On success: BE_ERR_SUCCESSFUL</returns>
-		[DllImport("Lame_enc.dll")]
-		public static extern uint beInitStream(BE_CONFIG pbeConfig, ref uint dwSamples, ref uint dwBufferSize, ref uint phbeStream);
-
-		/// <summary>
-		/// Encodes a chunk of samples. Please note that if you have set the output to 
-		/// generate mono MP3 files you must feed beEncodeChunk() with mono samples
-		/// </summary>
-		/// <param name="hbeStream">Handle of the stream.</param>
-		/// <param name="nSamples">Number of samples to be encoded for this call. 
-		/// This should be identical to what is returned by beInitStream(), 
-		/// unless you are encoding the last chunk, which might be smaller.</param>
-		/// <param name="pInSamples">Array of 16-bit signed samples to be encoded. 
-		/// These should be in stereo when encoding a stereo MP3 
-		/// and mono when encoding a mono MP3</param>
-		/// <param name="pOutput">Buffer where to write the encoded data. 
-		/// This buffer should be at least of the minimum size returned by beInitStream().</param>
-		/// <param name="pdwOutput">Returns the number of bytes of encoded data written. 
-		/// The amount of data written might vary from chunk to chunk</param>
-		/// <returns>On success: BE_ERR_SUCCESSFUL</returns>
-		[DllImport("Lame_enc.dll")]
-		public static extern uint beEncodeChunk(uint hbeStream, uint nSamples, short[] pInSamples, [In, Out] byte[] pOutput, ref uint pdwOutput);
-
-		/// <summary>
-		/// Encodes a chunk of samples. Please note that if you have set the output to 
-		/// generate mono MP3 files you must feed beEncodeChunk() with mono samples
-		/// </summary>
-		/// <param name="hbeStream">Handle of the stream.</param>
-		/// <param name="nSamples">Number of samples to be encoded for this call. 
-		/// This should be identical to what is returned by beInitStream(), 
-		/// unless you are encoding the last chunk, which might be smaller.</param>
-		/// <param name="pSamples">Pointer at the 16-bit signed samples to be encoded. 
-		/// InPtr is used to pass any type of array without need of make memory copy, 
-		/// then gaining in performance. Note that nSamples is not the number of bytes,
-		/// but samples (is sample is a SHORT)</param>
-		/// <param name="pOutput">Buffer where to write the encoded data. 
-		/// This buffer should be at least of the minimum size returned by beInitStream().</param>
-		/// <param name="pdwOutput">Returns the number of bytes of encoded data written. 
-		/// The amount of data written might vary from chunk to chunk</param>
-		/// <returns>On success: BE_ERR_SUCCESSFUL</returns>
-		[DllImport("Lame_enc.dll")]
-		protected static extern uint beEncodeChunk(uint hbeStream, uint nSamples, IntPtr pSamples, IntPtr pOutput, ref uint pdwOutput);
-
-		/// <summary>
-		/// Encodes a chunk of samples. Samples are contained in a byte array
-		/// </summary>
-		/// <param name="hbeStream">Handle of the stream.</param>
-		/// <param name="buffer">Bytes to encode</param>
-		/// <param name="index">Position of the first byte to encode</param>
-		/// <param name="nBytes">Number of bytes to encode (not samples, samples are two byte lenght)</param>
-		/// <param name="pOutput">Buffer where to write the encoded data.
-		/// This buffer should be at least of the minimum size returned by beInitStream().</param>
-		/// <param name="pdwOutput">Returns the number of bytes of encoded data written. 
-		/// The amount of data written might vary from chunk to chunk</param>
-		/// <returns>On success: BE_ERR_SUCCESSFUL</returns>
-		public static unsafe uint EncodeChunk(uint hbeStream, byte *pSamples, uint nBytes, byte* pOutput, ref uint pdwOutput)
-		{
-			return beEncodeChunk(hbeStream, nBytes / 2/*Samples*/, (IntPtr)pSamples, (IntPtr)pOutput, ref pdwOutput);
-		}
-
-		/// <summary>
-		/// Encodes a chunk of samples. Samples are contained in a byte array
-		/// </summary>
-		/// <param name="hbeStream">Handle of the stream.</param>
-		/// <param name="buffer">Bytes to encode</param>
-		/// <param name="index">Position of the first byte to encode</param>
-		/// <param name="nBytes">Number of bytes to encode (not samples, samples are two byte lenght)</param>
-		/// <param name="pOutput">Buffer where to write the encoded data.
-		/// This buffer should be at least of the minimum size returned by beInitStream().</param>
-		/// <param name="pdwOutput">Returns the number of bytes of encoded data written. 
-		/// The amount of data written might vary from chunk to chunk</param>
-		/// <returns>On success: BE_ERR_SUCCESSFUL</returns>
-		public static unsafe uint EncodeChunk(uint hbeStream, byte[] Samples, int index, uint nBytes, byte[] Output, ref uint pdwOutput)
-		{
-			fixed(byte *pSamples = &Samples[index], pOutput = Output)
-				return beEncodeChunk(hbeStream, nBytes / 2/*Samples*/, (IntPtr)pSamples, (IntPtr)pOutput, ref pdwOutput);
-		}
-
-		/// <summary>
-		/// Encodes a chunk of samples. Samples are contained in a byte array
-		/// </summary>
-		/// <param name="hbeStream">Handle of the stream.</param>
-		/// <param name="buffer">Bytes to encode</param>
-		/// <param name="pOutput">Buffer where to write the encoded data.
-		/// This buffer should be at least of the minimum size returned by beInitStream().</param>
-		/// <param name="pdwOutput">Returns the number of bytes of encoded data written. 
-		/// The amount of data written might vary from chunk to chunk</param>
-		/// <returns>On success: BE_ERR_SUCCESSFUL</returns>
-		public static uint EncodeChunk(uint hbeStream, byte[] buffer, byte[] pOutput, ref uint pdwOutput)
-		{
-			return EncodeChunk(hbeStream, buffer, 0, (uint)buffer.Length, pOutput, ref pdwOutput);
-		}
-
-		/// <summary>
-		/// This function should be called after encoding the last chunk in order to flush 
-		/// the encoder. It writes any encoded data that still might be left inside the 
-		/// encoder to the output buffer. This function should NOT be called unless 
-		/// you have encoded all of the chunks in your stream.
-		/// </summary>
-		/// <param name="hbeStream">Handle of the stream.</param>
-		/// <param name="pOutput">Where to write the encoded data. This buffer should be 
-		/// at least of the minimum size returned by beInitStream().</param>
-		/// <param name="pdwOutput">Returns number of bytes of encoded data written.</param>
-		/// <returns>On success: BE_ERR_SUCCESSFUL</returns>
-		[DllImport("Lame_enc.dll")]
-		public static extern uint beDeinitStream(uint hbeStream, [In, Out] byte[] pOutput, ref uint pdwOutput);
-
-		/// <summary>
-		/// Last function to be called when finished encoding a stream. 
-		/// Should unlike beDeinitStream() also be called if the encoding is canceled.
-		/// </summary>
-		/// <param name="hbeStream">Handle of the stream.</param>
-		/// <returns>On success: BE_ERR_SUCCESSFUL</returns>
-		[DllImport("Lame_enc.dll")]
-		public static extern uint beCloseStream(uint hbeStream);
-
-		/// <summary>
-		/// Returns information like version numbers (both of the DLL and encoding engine), 
-		/// release date and URL for lame_enc's homepage. 
-		/// All this information should be made available to the user of your product 
-		/// through a dialog box or something similar.
-		/// </summary>
-		/// <param name="pbeVersion"Where version number, release date and URL for homepage 
-		/// is returned.</param>
-		[DllImport("Lame_enc.dll")]
-		public static extern void beVersion([Out] BE_VERSION pbeVersion);
-
-		[DllImport("Lame_enc.dll", CharSet=CharSet.Ansi)]
-		public static extern void beWriteVBRHeader(string pszMP3FileName);
-		[DllImport("Lame_enc.dll")]
-		public static extern uint beEncodeChunkFloatS16NI(uint hbeStream, uint nSamples, [In]float[] buffer_l, [In]float[] buffer_r, [In, Out]byte[] pOutput, ref uint pdwOutput);
-		[DllImport("Lame_enc.dll")]
-		public static extern uint beFlushNoGap(uint hbeStream, [In, Out]byte[] pOutput, ref uint pdwOutput);
-		[DllImport("Lame_enc.dll", CharSet=CharSet.Ansi)]
-		public static extern uint beWriteInfoTag(uint hbeStream, string lpszFileName);
-	}
-}
diff --git a/CUETools.Codecs.LAME/LameWriterVBR.cs b/CUETools.Codecs.LAME/LameWriterVBR.cs
index 73fef93..302d701 100644
--- a/CUETools.Codecs.LAME/LameWriterVBR.cs
+++ b/CUETools.Codecs.LAME/LameWriterVBR.cs
@@ -1,8 +1,5 @@
 using System;
-using System.Collections.Generic;
 using System.IO;
-using System.Text;
-using CUETools.Codecs;
 
 namespace CUETools.Codecs.LAME
 {