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IsoFreeSpaceBox.cs

//
// IsoFreeSpaceBox.cs: Provides an implementation of a ISO/IEC 14496-12
// FreeSpaceBox.
//
// Author:
//   Brian Nickel (brian.nickel@gmail.com)
//
// Copyright (C) 2006-2007 Brian Nickel
// 
// This library is free software; you can redistribute it and/or modify
// it  under the terms of the GNU Lesser General Public License version
// 2.1 as published by the Free Software Foundation.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
// USA
//

using System;
namespace TagLib.Mpeg4 {
      /// <summary>
      ///    This class extends <see cref="Box" /> to provide an
      ///    implementation of a ISO/IEC 14496-12 FreeSpaceBox.
      /// </summary>
00031       public class IsoFreeSpaceBox : Box
      {
            #region Private Fields
            
            /// <summary>
            ///    Contains the size of the padding.
            /// </summary>
00038             private long padding;
            
            #endregion
            
            
            
            #region Constructors
            
            /// <summary>
            ///    Constructs and initializes a new instance of <see
            ///    cref="IsoMetaBox" /> with a provided header and
            ///    handler by reading the contents from a specified file.
            /// </summary>
            /// <param name="header">
            ///    A <see cref="BoxHeader" /> object containing the header
            ///    to use for the new instance.
            /// </param>
            /// <param name="file">
            ///    A <see cref="TagLib.File" /> object to read the contents
            ///    of the box from.
            /// </param>
            /// <param name="handler">
            ///    A <see cref="IsoHandlerBox" /> object containing the
            ///    handler that applies to the new instance.
            /// </param>
00063             public IsoFreeSpaceBox (BoxHeader header, TagLib.File file,
                                    IsoHandlerBox handler)
                  : base (header, handler)
            {
                  padding = DataSize;
            }
            
            /// <summary>
            ///    Constructs and initializes a new instance of <see
            ///    cref="IsoFreeSpaceBox" /> to occupy a specified number of
            ///    bytes.
            /// </summary>
            /// <param name="padding">
            ///    A <see cref="long" /> value specifying the number of
            ///    bytes the new instance should occupy when rendered.
            /// </param>
00079             public IsoFreeSpaceBox (long padding) : base ("free")
            {
                  PaddingSize = padding;
            }
            
            #endregion
            
            
            
            #region Public Properties
            
            /// <summary>
            ///    Gets and sets the data contained in the current instance.
            /// </summary>
            /// <value>
            ///    A <see cref="ByteVector" /> object containing the data
            ///    contained in the current instance.
            /// </value>
00097             public override ByteVector Data {
                  get {return new ByteVector ((int) padding);}
                  set {padding = (value != null) ? value.Count : 0;}
            }
            
            /// <summary>
            ///    Gets and sets the size the current instance will occupy
            ///    when rendered.
            /// </summary>
            /// <value>
            ///    A <see cref="long" /> value containing the size the
            ///    current instance will occupy when rendered.
            /// </value>
00110             public long PaddingSize {
                  get {return padding + 8;}
                  set {padding = value - 8;}
            }
            
            #endregion
      }
}

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