PPMdCompressionSettings
Contents
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]PPMdCompressionSettings constructor (1 of 2)
Initializes a new instance of the PPMdCompressionSettings
class.
public PPMdCompressionSettings(int modelOrder, int suballocatorSize)
Parameter | Type | Description |
---|---|---|
modelOrder | Int32 | Order of the model. |
suballocatorSize | Int32 | Memory size in MB suballocator may consume. |
Exceptions
exception | condition |
---|---|
ArgumentOutOfRangeException | modelOrder is not between 2 and 16. - or - suballocatorSize is not between 1 and 256. |
Remarks
Bigger model orders almost surely results in better compression and surely more memory and CPU usage.
The PPMd algorithm might need a lot of memory, especially when used on large files and/or used with large model order. If ppmd needs more memory than you give it, the compression will be worse.
Examples
using (Archive archive = new Archive(new ArchiveEntrySettings(new PPMdCompressionSettings(4, 10))))
{
archive.CreateEntry("data.bin", "data.bin");
archive.Save(zipFile);
}
See Also
- class PPMdCompressionSettings
- namespace Aspose.Zip.Saving
- assembly Aspose.Zip
PPMdCompressionSettings constructor (2 of 2)
Initializes a new instance of the PPMdCompressionSettings
class with default model order and sub-allocator size.
public PPMdCompressionSettings()
Remarks
Default model order is 8 and sub-allocator size is 50MB.
Examples
using (Archive archive = new Archive(new ArchiveEntrySettings(new PPMdCompressionSettings())))
{
archive.CreateEntry("data.bin", "data.bin");
archive.Save(zipFile);
}
See Also
- class PPMdCompressionSettings
- namespace Aspose.Zip.Saving
- assembly Aspose.Zip