public int Decompress(CompressedFile file, CompressionLevel level) // the level argument is not used here, but it describes how the data was compressed
{
file.CompressedDataStream.Position = 0;
var compressor = CreateStream(file.CompressedDataStream, CompressionMode.Decompress);
return(compressor.Read(file.UncompressedData, 0, file.UncompressedData.Length));
}
public void Compress(CompressedFile file, CompressionLevel level)
{
file.CompressedDataStream.Position = 0; // all benchmarks invocation reuse the same stream, we set Postion to 0 to start at the beginning
var compressor = CreateStream(file.CompressedDataStream, level);
compressor.Write(file.UncompressedData, 0, file.UncompressedData.Length);
}
public Span <byte> Decompress_WithState(CompressedFile file, CompressionLevel level) // the level argument is not used here, but it describes how the data was compressed
{
using (BrotliDecoder decoder = new BrotliDecoder())
{
Span <byte> output = new Span <byte>(file.UncompressedData);
ReadOnlySpan <byte> input = file.CompressedData;
while (!input.IsEmpty && !output.IsEmpty)
{
decoder.Decompress(input, output, out int bytesConsumed, out int written);
input = input.Slice(bytesConsumed);
output = output.Slice(written);
}
return(output);
}
}
public Span <byte> Compress_WithState(CompressedFile file, CompressionLevel level)
{
using (BrotliEncoder encoder = new BrotliEncoder(GetQuality(level), Window))
{
Span <byte> output = new Span <byte>(file.UncompressedData);
ReadOnlySpan <byte> input = file.CompressedData;
while (!input.IsEmpty && !output.IsEmpty)
{
encoder.Compress(input, output, out int bytesConsumed, out int written, isFinalBlock: false);
input = input.Slice(bytesConsumed);
output = output.Slice(written);
}
encoder.Compress(input, output, out int bytesConsumed2, out int written2, isFinalBlock: true);
return(output);
}
}
public void Setup() => CompressedFile = new CompressedFile(file, level, CreateStream); // this logic is quite expensive, needs to be a part of Setup
public bool Compress_WithoutState(CompressedFile file, CompressionLevel level) => BrotliEncoder.TryCompress(file.UncompressedData, file.UncompressedData, out int bytesWritten, GetQuality(level), Window);