Logo Search packages:      
Sourcecode: f-spot version File versions  Download package

ThumbnailDataIFDEntry.cs

//
// ThumbnailDataIFDEntry.cs:
//
// Author:
//   Mike Gemuende (mike@gemuende.de)
//
// Copyright (C) 2009 Ruben Vermeersch
// Copyright (C) 2009 Mike Gemuende
//
// 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
//

namespace TagLib.IFD.Entries
{
      /// <summary>
      ///    Contains the data of a Thumbnail. Since the thumbnail is
      ///    referenced by two long entries (offset to the data and length)
      ///    we need to take care of this special case.
      ///    This entry acts as the offset-entry but holds also the
      ///    thumbail data. When rendering the entry, we have to render the
      ///    data but write a long entry.
      /// </summary>
00035       public class ThumbnailDataIFDEntry : IFDEntry
      {

#region Properties

            /// <value>
            ///    The ID of the tag, the current instance belongs to
            /// </value>
00043             public ushort Tag { get; private set; }

            /// <value>
            ///    The data of the thumbnail which is stored by the current instance
            /// </value>
00048             public ByteVector Data { get; private set; }

#endregion

#region Constructors

            /// <summary>
            ///    Construcor.
            /// </summary>
            /// <param name="tag">
            ///    A <see cref="System.UInt16"/> with the tag ID of the entry this instance
            ///    represents
            /// </param>
            /// <param name="data">
            ///    A <see cref="ByteVector"/> with the thumbnail data to be stored
            /// </param>
00064             public ThumbnailDataIFDEntry (ushort tag, ByteVector data)
            {
                  Tag = tag;
                  Data = data;
            }

#endregion

#region Public Methods

            /// <summary>
            ///    Renders the current instance to a <see cref="ByteVector"/>
            /// </summary>
            /// <param name="is_bigendian">
            ///    A <see cref="System.Boolean"/> indicating the endianess for rendering.
            /// </param>
            /// <param name="offset">
            ///    A <see cref="System.UInt32"/> with the offset, the data is stored.
            /// </param>
            /// <param name="type">
            ///    A <see cref="System.UInt16"/> the ID of the type, which is rendered
            /// </param>
            /// <param name="count">
            ///    A <see cref="System.UInt32"/> with the count of the values which are
            ///    rendered.
            /// </param>
            /// <returns>
            ///    A <see cref="ByteVector"/> with the rendered data.
            /// </returns>
00093             public ByteVector Render (bool is_bigendian, uint offset, out ushort type, out uint count)
            {
                  // the entry is a single long entry where the value is an offset to the data
                  // the offset is automatically updated by the renderer.
                  type = (ushort) IFDEntryType.Long;
                  count = 1;

                  return Data;
            }

#endregion

      }
}

Generated by  Doxygen 1.6.0   Back to index