context: //
  // System.Drawing.Imaging.ImageCodecInfo.cs
  //
  // Authors:
  //   Everaldo Canuto (everaldo.canuto@bol.com.br)
  //   Andreas Nahr (ClassDevelopment@A-SoftTech.com)
  //   Dennis Hayes (dennish@raytek.com)
  //   Jordi Mas i Hernandez (jordi@ximian.com)
  //   Sebastien Pouliot  <sebastien@ximian.com>
  //
  // (C) 2002 Ximian, Inc.  http://www.ximian.com
  // Copyright (C) 2004,2006,2007 Novell, Inc (http://www.novell.com)
  //
  // Permission is hereby granted, free of charge, to any person obtaining
  // a copy of this software and associated documentation files (the
  // "Software"), to deal in the Software without restriction, including
  // without limitation the rights to use, copy, modify, merge, publish,
  // distribute, sublicense, and/or sell copies of the Software, and to
  // permit persons to whom the Software is furnished to do so, subject to
  // the following conditions:
  // 
  // The above copyright notice and this permission notice shall be
  // included in all copies or substantial portions of the Software.
  // 
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  //
  
  using System.Runtime.InteropServices;
  using System.Collections;
  using System.IO;
  
  namespace System.Drawing.Imaging {
  
  	public sealed class ImageCodecInfo {
  		private Guid clsid;
  		private string codecName;
  		private string dllName;
  		private string filenameExtension;
  		private ImageCodecFlags flags;
  		private string formatDescription;
  		private Guid formatID;
  		private string	mimeType;
  		private byte[][] signatureMasks;
  		private byte[][] signaturePatterns;
  		private int version;
  		
  		internal ImageCodecInfo()
  		{
  		}
  
  		// methods		
  		public static ImageCodecInfo[] GetImageDecoders() 
  		{			
  			int decoderNums, arraySize, decoder_size;
  			IntPtr decoders, decoder_ptr;
  			ImageCodecInfo[] result;
  			GdipImageCodecInfo gdipdecoder = new GdipImageCodecInfo();
  			Status status;
  			
  			status = GDIPlus.GdipGetImageDecodersSize (out decoderNums, out arraySize);
  			GDIPlus.CheckStatus (status);
  			
  			result =  new ImageCodecInfo [decoderNums];			
  			
  			if (decoderNums == 0)
  				return result;			
  			
  			/* Get decoders list*/
  			decoders = Marshal.AllocHGlobal (arraySize);
  			try {
  				status = GDIPlus.GdipGetImageDecoders (decoderNums,  arraySize, decoders);
  				GDIPlus.CheckStatus (status);
  			
  				decoder_size = Marshal.SizeOf (gdipdecoder);
  				decoder_ptr = decoders;
  			
  				for (int i = 0; i < decoderNums; i++, decoder_ptr = new IntPtr (decoder_ptr.ToInt64 () + decoder_size)) {
  					gdipdecoder = (GdipImageCodecInfo) Marshal.PtrToStructure (decoder_ptr, typeof (GdipImageCodecInfo));
  					result[i] = new ImageCodecInfo ();
  					GdipImageCodecInfo.MarshalTo (gdipdecoder, result[i]);
  				}
  			}
  			finally {
  				Marshal.FreeHGlobal (decoders);
  			}
  			return result;
  		}
  		
  		
  		public static ImageCodecInfo[] GetImageEncoders() 
  		{
  			int encoderNums, arraySize, encoder_size;
  			IntPtr encoders, encoder_ptr;
  			ImageCodecInfo[] result;
  			GdipImageCodecInfo gdipencoder = new GdipImageCodecInfo();
  			Status status;
  			
  			status = GDIPlus.GdipGetImageEncodersSize (out encoderNums, out arraySize);
  			GDIPlus.CheckStatus (status);
  			
  			result =  new ImageCodecInfo [encoderNums];			
  			
  			if (encoderNums == 0)
  				return result;			
  			
  			/* Get encoders list*/
  			encoders = Marshal.AllocHGlobal (arraySize);
  			try {
  				status = GDIPlus.GdipGetImageEncoders (encoderNums,  arraySize, encoders);
  				GDIPlus.CheckStatus (status);
  			
  				encoder_size = Marshal.SizeOf (gdipencoder);
  				encoder_ptr = encoders;
  			
  				for (int i = 0; i < encoderNums; i++, encoder_ptr = new IntPtr (encoder_ptr.ToInt64 () + encoder_size)) {
  					gdipencoder = (GdipImageCodecInfo) Marshal.PtrToStructure (encoder_ptr, typeof (GdipImageCodecInfo));
  					result[i] = new ImageCodecInfo ();
  					GdipImageCodecInfo.MarshalTo (gdipencoder, result[i]);
  				}
  			}
  			finally {
  				Marshal.FreeHGlobal (encoders);
  			}
  			return result;
  		}
  
  		// properties
  		
  		public Guid Clsid 
  		{
  			get { return clsid; }
  			set { clsid = value; }
  		}
  
  		
  		public string CodecName 
  		{
  			get { return codecName; }
  			set { codecName = value; }
  		}
  
  		
  		public string DllName 
  		{
  			get { return dllName; }
  			set { dllName = value; }
  		}
  
  		
  		public string FilenameExtension 
  		{
  			get { return filenameExtension; }
  			set { filenameExtension = value; }
  		}
  
  		
  		public ImageCodecFlags Flags 
  		{
  			get { return flags; }
  			set { flags = value; }
  		}
  		
  		public string FormatDescription 
  		{
  			get { return formatDescription; }
  			set { formatDescription = value; }
  		}
  		
  		public Guid FormatID 
  		{
  			get { return formatID; }
  			set { formatID = value; }
  		}
  
  		
  		public string MimeType 
  		{
  			get { return mimeType; }
  			set { mimeType = value; }
  		}
  
  		
  		[CLSCompliant(false)]
  		public byte[][] SignatureMasks 
  		{
  			get { return signatureMasks; }
  			set { signatureMasks = value; }
  		}
  
  		[CLSCompliant(false)]
  		public byte[][] SignaturePatterns 
  		{
  			get { return signaturePatterns; }
  			set { signaturePatterns = value; }
  		}
  		
  		public int Version 
  		{
  
gt: 			get { return version; }