public void WriteFully(string testFile)
{
byte[] correctUncompressedBytes = File.ReadAllBytes(testFile);
byte[] compressedBytes = new byte[BrotliEncoder.GetMaxCompressedLength(correctUncompressedBytes.Length)];
byte[] actualUncompressedBytes = new byte[BrotliEncoder.GetMaxCompressedLength(correctUncompressedBytes.Length)];
Span <byte> destination = new Span <byte>(compressedBytes);
Assert.True(BrotliEncoder.TryCompress(correctUncompressedBytes, destination, out int bytesWritten));
Assert.True(BrotliDecoder.TryDecompress(destination, actualUncompressedBytes, out bytesWritten));
Assert.Equal(correctUncompressedBytes.Length, bytesWritten);
Assert.Equal <byte>(correctUncompressedBytes, actualUncompressedBytes.AsSpan(0, correctUncompressedBytes.Length).ToArray());
}
public void Compress_Canterbury_WithoutState(string uncompressedFileName, CompressionLevel compressLevel)
{
byte[] bytes = File.ReadAllBytes(uncompressedFileName);
ReadOnlySpan <byte> uncompressedData = new ReadOnlySpan <byte>(bytes);
int maxCompressedSize = BrotliEncoder.GetMaxCompressedLength(bytes.Length);
byte[] compressedDataArray = new byte[maxCompressedSize];
int compressLevelBrotli = compressLevel == CompressionLevel.Optimal ? 11 : compressLevel == CompressionLevel.Fastest ? 1 : 0;
foreach (var iteration in Benchmark.Iterations)
{
using (iteration.StartMeasurement())
{
Assert.True(BrotliEncoder.TryCompress(uncompressedData, compressedDataArray, out int bytesWritten, compressLevelBrotli, 22));
}
}
}
public Span <byte> Compress_WithState()
{
using (BrotliEncoder encoder = new BrotliEncoder(GetQuality(level), Window))
{
Span <byte> output = new Span <byte>(CompressedFile.UncompressedData);
ReadOnlySpan <byte> input = CompressedFile.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 Compress_WithEmptySource()
{
byte[] sourceBytes = new byte[0];
byte[] destinationBytes = new byte[100000];
ReadOnlySpan <byte> source = new ReadOnlySpan <byte>(sourceBytes);
Span <byte> destination = new Span <byte>(destinationBytes);
Assert.True(BrotliEncoder.TryCompress(source, destination, out int bytesWritten));
// The only byte written should be the Brotli end of stream byte which varies based on the window/quality
Assert.Equal(1, bytesWritten);
BrotliEncoder encoder = default;
var result = encoder.Compress(source, destination, out int bytesConsumed, out bytesWritten, false);
Assert.Equal(0, bytesWritten);
Assert.Equal(0, bytesConsumed);
Assert.Equal(OperationStatus.Done, result);
result = encoder.Compress(source, destination, out bytesConsumed, out bytesWritten, isFinalBlock: true);
Assert.Equal(1, bytesWritten);
Assert.Equal(0, bytesConsumed);
Assert.Equal(OperationStatus.Done, result);
}
public void Compress_WithEmptyDestination()
{
string testFile = UncompressedTestFile();
byte[] correctUncompressedBytes = File.ReadAllBytes(testFile);
byte[] empty = new byte[0];
ReadOnlySpan <byte> source = new ReadOnlySpan <byte>(correctUncompressedBytes);
Span <byte> destination = new Span <byte>(empty);
Assert.False(BrotliEncoder.TryCompress(source, destination, out int bytesWritten), "TryCompress completed successfully but should have failed due to too short of a destination array");
Assert.Equal(0, bytesWritten);
BrotliEncoder encoder = default;
var result = encoder.Compress(source, destination, out int bytesConsumed, out bytesWritten, false);
Assert.Equal(0, bytesWritten);
Assert.Equal(0, bytesConsumed);
Assert.Equal(OperationStatus.DestinationTooSmall, result);
result = encoder.Compress(source, destination, out bytesConsumed, out bytesWritten, isFinalBlock: true);
Assert.Equal(0, bytesWritten);
Assert.Equal(0, bytesConsumed);
Assert.Equal(OperationStatus.DestinationTooSmall, result);
}
public void Compress_Canterbury_WithState(string uncompressedFileName, CompressionLevel compressLevel)
{
byte[] bytes = File.ReadAllBytes(uncompressedFileName);
ReadOnlySpan <byte> uncompressedData = new ReadOnlySpan <byte>(bytes);
int maxCompressedSize = BrotliEncoder.GetMaxCompressedLength(bytes.Length);
byte[] compressedDataArray = new byte[maxCompressedSize];
foreach (var iteration in Benchmark.Iterations)
{
using (iteration.StartMeasurement())
using (BrotliEncoder encoder = new BrotliEncoder())
{
Span <byte> output = new Span <byte>(compressedDataArray);
ReadOnlySpan <byte> input = uncompressedData;
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);
}
}
}
private static void Compress_WithoutState(ReadOnlySpan <byte> input, Span <byte> output)
{
BrotliEncoder.TryCompress(input, output, out int bytesWritten);
}
public bool Compress_WithoutState() => BrotliEncoder.TryCompress(CompressedFile.UncompressedData, CompressedFile.UncompressedData, out int bytesWritten, GetQuality(level), Window);