Initial checkin

Bwg.Scsi/HeaderData.cs

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+//
+// BwgBurn - CD-R/CD-RW/DVD-R/DVD-RW burning program for Windows XP
+// 
+// Copyright (C) 2006 by Jack W. Griffin (butchg@comcast.net)
+//
+// This program is free software; you can redistribute it and/or modify 
+// it under the terms of the GNU General Public License as published by 
+// the Free Software Foundation; either version 2 of the License, or 
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but 
+// WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 
+// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 
+// for more details.
+//
+// You should have received a copy of the GNU General Public License along 
+// with this program; if not, write to the 
+//
+// Free Software Foundation, Inc., 
+// 59 Temple Place, Suite 330, 
+// Boston, MA 02111-1307 USA
+//
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Bwg.Scsi
+{
+    /// <summary>
+    /// This class contains the header data read from a sector
+    /// </summary>
+    public class HeaderData : Result
+    {
+        #region public types
+        /// <summary>
+        /// The block type, see SCSI MMC spec
+        /// </summary>
+        public enum BlockTypeType : byte
+        {
+
+            /// <summary>
+            /// See SCSI MMC spec
+            /// </summary>
+            UserDataBlock = 0x00,
+
+            /// <summary>
+            /// See SCSI MMC spec
+            /// </summary>
+            FourthRunInBlock = 0x01,
+
+            /// <summary>
+            /// See SCSI MMC spec
+            /// </summary>
+            ThirdRunInBlock = 0x02,
+
+            /// <summary>
+            /// See SCSI MMC spec
+            /// </summary>
+            SecondRunInBlock = 0x03,
+
+            /// <summary>
+            /// See SCSI MMC spec
+            /// </summary>
+            FirstRunInBlock = 0x04,
+
+            /// <summary>
+            /// See SCSI MMC spec
+            /// </summary>
+            LinkBlock = 0x05,
+
+            /// <summary>
+            /// See SCSI MMC spec
+            /// </summary>
+            SecondRunOutBlock = 0x06,
+
+            /// <summary>
+            /// See SCSI MMC spec
+            /// </summary>
+            FirstRunOutBlock = 0x07
+        } ;
+
+        /// <summary>
+        /// The data mode for the sector (only applies if track mode is 0x04)
+        /// </summary>
+        public enum DataTypeType : byte
+        {
+            /// <summary>
+            /// Mode 0 data, 2336 bytes of zero
+            /// </summary>
+            Mode0Data = 0x00,
+
+            /// <summary>
+            /// Mode 1 data, 2048 bytes of user data
+            /// </summary>
+            Mode1Data = 0x01,
+
+            /// <summary>
+            /// Mode 2 data, multiple forms of data
+            /// </summary>
+            Mode2Data = 0x02,
+
+            /// <summary>
+            /// Reserved, should not be returned by a drive
+            /// </summary>
+            Reserved = 0x03
+        } ;
+        #endregion
+
+        #region public data members
+        /// <summary>
+        /// The time data read from the sector
+        /// </summary>
+        public readonly MinuteSecondFrame MSF;
+
+        /// <summary>
+        /// The block type, see SCSI MMC spec
+        /// </summary>
+        public readonly BlockTypeType BlockType;
+
+        /// <summary>
+        /// The data type, see SCSI MMC spec
+        /// </summary>
+        public readonly DataTypeType DataType;
+        #endregion
+
+        /// <summary>
+        /// Create the header data object from a buffer containing the header data
+        /// </summary>
+        /// <param name="buf">buffer containing the data</param>
+        /// <param name="size">size of the data</param>
+        public HeaderData(IntPtr buf, int size)
+            : base(buf, size)
+        {
+            byte b ;
+
+            MSF = new MinuteSecondFrame(Get8(0), Get8(1), Get8(2));
+            b = Get8(3);
+            BlockType = (BlockTypeType)((b >> 5) & 0x07);
+            DataType = (DataTypeType)(b & 0x03);
+        }
+    }
+}