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Brotli-Builder/BrotliLib/Brotli/Encode/BrotliEncodeInfo.cs

52 lines
2.0 KiB
C#

using System;
using BrotliLib.Brotli.Components;
using BrotliLib.Brotli.Encode.Build;
using BrotliLib.Brotli.Parameters;
namespace BrotliLib.Brotli.Encode{
public sealed class BrotliEncodeInfo{
public BrotliFileParameters FileParameters { get; }
public BrotliCompressionParameters CompressionParameters { get; }
public BrotliGlobalState State => state.Clone();
public ArraySegment<byte> Bytes { get; }
public bool IsFinished => Bytes.Count == 0;
private readonly BrotliGlobalState state;
private BrotliEncodeInfo(BrotliFileParameters fileParameters, BrotliCompressionParameters compressionParameters, BrotliGlobalState state, in ArraySegment<byte> bytes){
this.FileParameters = fileParameters;
this.CompressionParameters = compressionParameters;
this.state = state;
this.Bytes = bytes;
}
public BrotliEncodeInfo(BrotliFileParameters fileParameters, BrotliCompressionParameters compressionParameters, byte[] bytes) : this(
fileParameters,
compressionParameters,
new BrotliGlobalState(fileParameters),
new ArraySegment<byte>(bytes)
){}
public CompressedMetaBlockBuilder NewBuilder(){
return new CompressedMetaBlockBuilder(state);
}
public BrotliEncodeInfo WithState(BrotliGlobalState newState){
return new BrotliEncodeInfo(FileParameters, CompressionParameters, newState, Bytes);
}
public BrotliEncodeInfo WithProcessedBytes(BrotliGlobalState newState, int processedBytes){
return new BrotliEncodeInfo(FileParameters, CompressionParameters, newState, Bytes.Slice(processedBytes));
}
public BrotliEncodeInfo WithOutputtedMetaBock(MetaBlock metaBlock){
var newState = State;
metaBlock.Decompress(newState);
return WithProcessedBytes(newState, metaBlock.DataLength.UncompressedBytes);
}
}
}