mirror of
https://github.com/aaru-dps/Aaru.git
synced 2025-12-16 19:24:25 +00:00
65 lines
3.5 KiB
C#
65 lines
3.5 KiB
C#
// /***************************************************************************
|
|
// Aaru Data Preservation Suite
|
|
// ----------------------------------------------------------------------------
|
|
//
|
|
// Filename : LZFSE.cs
|
|
// Author(s) : Natalia Portillo <claunia@claunia.com>
|
|
//
|
|
// Component : Compression algorithms.
|
|
//
|
|
// --[ License ] --------------------------------------------------------------
|
|
//
|
|
// This library is free software; you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as
|
|
// published by the Free Software Foundation; either version 2.1 of the
|
|
// License, or (at your option) any later version.
|
|
//
|
|
// 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, see <http://www.gnu.org/licenses/>.
|
|
//
|
|
// ----------------------------------------------------------------------------
|
|
// Copyright © 2011-2022 Natalia Portillo
|
|
// ****************************************************************************/
|
|
|
|
namespace Aaru.Compression;
|
|
|
|
using System.Runtime.InteropServices;
|
|
|
|
public class LZFSE
|
|
{
|
|
/// <summary>Set to <c>true</c> if this algorithm is supported, <c>false</c> otherwise.</summary>
|
|
public static bool IsSupported => Native.IsSupported;
|
|
|
|
[DllImport("libAaru.Compression.Native", SetLastError = true)]
|
|
static extern nuint AARU_lzfse_decode_buffer(byte[] dst_buffer, nuint dst_size, byte[] src_buffer, nuint src_size,
|
|
byte[] scratch_buffer);
|
|
|
|
[DllImport("libAaru.Compression.Native", SetLastError = true)]
|
|
static extern nuint AARU_lzfse_encode_buffer(byte[] dst_buffer, nuint dst_size, byte[] src_buffer, nuint src_size,
|
|
byte[] scratch_buffer);
|
|
|
|
/// <summary>Decodes a buffer compressed with LZFSE</summary>
|
|
/// <param name="source">Encoded buffer</param>
|
|
/// <param name="destination">Buffer where to write the decoded data</param>
|
|
/// <returns>The number of decoded bytes</returns>
|
|
public static int DecodeBuffer(byte[] source, byte[] destination) => Native.IsSupported
|
|
? (int)
|
|
AARU_lzfse_decode_buffer(destination,
|
|
(nuint)destination.Length, source,
|
|
(nuint)source.Length, null) : 0;
|
|
|
|
/// <summary>Compresses a buffer using BZIP2</summary>
|
|
/// <param name="source">Data to compress</param>
|
|
/// <param name="destination">Buffer to store the compressed data</param>
|
|
/// <returns></returns>
|
|
public static int EncodeBuffer(byte[] source, byte[] destination) => Native.IsSupported
|
|
? (int)
|
|
AARU_lzfse_encode_buffer(destination,
|
|
(nuint)destination.Length, source,
|
|
(nuint)source.Length, null) : 0;
|
|
} |