Class PPMdCompressionSettings

Class PPMdCompressionSettings

名称: Aspose.Zip.Saving 收藏: Aspose.Zip.dll (25.5.0)

设置需要压缩机或压缩机工作。

public class PPMdCompressionSettings : CompressionSettings

Inheritance

object ← CompressionSettings ← PPMdCompressionSettings

继承人

CompressionSettings.Bzip2 , CompressionSettings.Deflate , CompressionSettings.EnhancedDeflate , CompressionSettings.Store , CompressionSettings.Lzma , CompressionSettings.Xz , CompressionSettings.PPMd , CompressionSettings.Zstd , object.GetType() , object.MemberwiseClone() , object.ToString() , object.Equals(object?) , object.Equals(object?, object?) , object.ReferenceEquals(object?, object?) , object.GetHashCode()

Remarks

PPMd 是由 Dmitry Shkarin 开发的数据压缩算法,基于预测句子匹配多个顺序背景。

Constructors

PPMd压缩设置(int , int , int)

启动 Aspose.Zip.Saving.PPMdCompressionSettings 类的新例子。

public PPMdCompressionSettings(int modelOrder, int suballocatorSize)

Parameters

modelOrder int

模型的命令。

suballocatorSize int

MB suballocator 的記憶體大小可能消耗。

Examples 

using (Archive archive = new Archive(new ArchiveEntrySettings(new PPMdCompressionSettings(4, 10))))
{
    archive.CreateEntry("data.bin", "data.bin");                   
    archive.Save(zipFile);
}

Remarks

更大的模型订单几乎肯定会导致更好的压缩和更大的内存和CPU使用。

PPMd 算法可能需要大量的内存,特别是当用于大文件和/或使用大模型顺序时。

Exceptions

ArgumentOutOfRangeException

modelOrder’ is not between 2 and 16. - or - suballocatorSize’ is not between 1 and 256.

PPMd压缩设置()

启动 Aspose.Zip.Saving.PPMdCompressionSettings 类的新例子,默认模型顺序和分配器大小。

public PPMdCompressionSettings()

Examples 

using (Archive archive = new Archive(new ArchiveEntrySettings(new PPMdCompressionSettings())))
{
    archive.CreateEntry("data.bin", "data.bin");                   
    archive.Save(zipFile);
}

Remarks

默认模型命令为8个,分配器大小为50MB。

Properties

ModelOrder

得到模型的命令。

public int ModelOrder { get; }

财产价值

int

SuballocatorSize

在 MB 中获取分配器尺寸。

public int SuballocatorSize { get; }

财产价值

int

 中文