// Copyright (c) 2010 Gareth Lennox (garethl@dwakn.com)
// All rights reserved.

// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:

//     * Redistributions of source code must retain the above copyright notice,
//       this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above copyright notice,
//       this list of conditions and the following disclaimer in the documentation
//       and/or other materials provided with the distribution.
//     * Neither the name of Gareth Lennox nor the names of its
//       contributors may be used to endorse or promote products derived from this
//       software without specific prior written permission.

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

using System.IO;

namespace libhac.XTSSharp
{
    /// <summary>
    /// A random access, xts encrypted stream
    /// </summary>
    public class XtsStream : RandomAccessSectorStream
    {
        /// <summary>
        /// Creates a new stream
        /// </summary>
        /// <param name="baseStream">The base stream</param>
        /// <param name="xts">Xts implementation to use</param>
        public XtsStream(Stream baseStream, Xts xts)
            : this(baseStream, xts, XtsSectorStream.DefaultSectorSize)
        {
        }

        /// <summary>
        /// Creates a new stream
        /// </summary>
        /// <param name="baseStream">The base stream</param>
        /// <param name="xts">Xts implementation to use</param>
        /// <param name="sectorSize">Sector size</param>
        public XtsStream(Stream baseStream, Xts xts, int sectorSize)
            : base(new XtsSectorStream(baseStream, xts, sectorSize), false)
        {
        }


        /// <summary>
        /// Creates a new stream
        /// </summary>
        /// <param name="baseStream">The base stream</param>
        /// <param name="xts">Xts implementation to use</param>
        /// <param name="sectorSize">Sector size</param>
        /// <param name="offset">Offset to start counting sectors</param>
        public XtsStream(Stream baseStream, Xts xts, int sectorSize, long offset)
            : base(new XtsSectorStream(baseStream, xts, sectorSize, offset), false)
        {
        }
    }
}