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Use native version for ZSTD.

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Natalia Portillo
2021-11-04 18:40:08 +00:00
parent a481e9518b
commit d6fa10a1ef
2 changed files with 59 additions and 0 deletions
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1
Aaru.Compression/Aaru.Compression.csproj
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@@ -86,6 +86,7 @@
<Compile Include="cuetools.net/CUETools.Codecs/WAV/*.cs" />
<Compile Include="cuetools.net/CUETools.Codecs.Flake/*.cs" />
<Compile Include="cuetools.net/CUETools.Codecs.Flake/Properties/*.cs" />
<Compile Include="ZSTD.cs" />
</ItemGroup>
<ItemGroup>
<Content Include="..\LICENSE.LGPL">

58
Aaru.Compression/ZSTD.cs Normal file
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@@ -0,0 +1,58 @@
// /***************************************************************************
// Aaru Data Preservation Suite
// ----------------------------------------------------------------------------
//
// Filename : ZSTD.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 © 2011-2021 Natalia Portillo
// ****************************************************************************/
using System.Runtime.InteropServices;
namespace Aaru.Compression;
public class ZSTD
{
[DllImport("libAaru.Compression.Native", SetLastError = true)]
static extern nuint AARU_zstd_decode_buffer(byte[] dst_buffer, nuint dst_size, byte[] src_buffer, nuint src_size);
[DllImport("libAaru.Compression.Native", SetLastError = true)]
static extern nuint AARU_zstd_encode_buffer(byte[] dst_buffer, nuint dst_size, byte[] src_buffer, nuint src_size,
int compressionLevel);
/// <summary>Decodes a buffer compressed with ZSTD</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) =>
(int)(Native.IsSupported
? AARU_zstd_decode_buffer(destination, (nuint)destination.Length, source, (nuint)source.Length) : 0);
/// <summary>Compresses a buffer using ZSTD</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, int compressionLevel) =>
(int)(Native.IsSupported
? AARU_zstd_encode_buffer(destination, (nuint)destination.Length, source, (nuint)source.Length,
compressionLevel) : 0);
}