public (MetaBlock, BrotliEncodeInfo) Encode(BrotliEncodeInfo info)
{
var bytes = CollectionHelper.SliceAtMost(info.Bytes, DataLength.MaxUncompressedBytes);
var mb = new MetaBlock.Uncompressed(bytes);
return(mb, info.WithOutputtedMetaBock(mb));
}
public BuildUncompressedMetaBlock(IBuildingBlockContext context, MetaBlock.Uncompressed metaBlock)
{
InitializeComponent();
this.context = context;
this.textBoxUncompressedText.SetPlainTextMode();
this.textBoxUncompressedText.Text = Encoding.UTF8.GetString(metaBlock.UncompressedData);
this.textBoxUncompressedText.TextChanged += textBoxUncompressedText_TextChanged;
}
public (MetaBlock, BrotliEncodeInfo) Encode(BrotliEncodeInfo info)
{
(literalTree, literalRatio) = Huffman.EstimateLiteralRatio(new ArraySegment <byte>(input, ip, blockSize));
var builder = info.NewBuilder();
var nextStep = NextStep.EmitCommands;
while (true)
{
switch (nextStep)
{
case NextStep.EmitCommands:
nextStep = EmitCommands();
break;
case NextStep.EmitCommandsNextHash:
nextStep = EmitCommandsNextHash();
break;
case NextStep.Trawl:
nextStep = Trawl(builder);
break;
case NextStep.EmitRemainder:
nextStep = EmitRemainder(builder);
break;
case NextStep.OutputCompressed:
OnNextBlock();
return(builder.Build(info, new BrotliCompressionParameters.Builder(info.CompressionParameters)
{
GenerateLiteralTree = _ => literalTree
}.Build()));
case NextStep.OutputUncompressed:
var metaBlock = new MetaBlock.Uncompressed(input, metaBlockStart, outputTo - metaBlockStart);
inputSize -= metaBlock.DataLength.UncompressedBytes;
nextIpStart = outputTo;
nextEmit = nextIpStart;
OnNextBlock();
return(metaBlock, info.WithOutputtedMetaBock(metaBlock));
}
}
}
protected sealed override IList <(MetaBlock MetaBlock, BrotliGlobalState NextState)> TransformUncompressed(MetaBlock.Uncompressed original, BrotliGlobalState state, BrotliCompressionParameters parameters)
{
return(base.TransformUncompressed(original, state, parameters));
}