/// <summary>
/// Resets this frame to contain compressed data.
/// </summary>
/// <param name="data">Input buffer containing uncompressed data that is compressed by this method before being stored in the frame.</param>
/// <param name="offset">Offset of uncompressed data in the input buffer.</param>
/// <param name="count">Size of uncompressed data in the input buffer. Maximum data size is 64KB.</param>
public void SetCompressed(byte[] data, int offset, int count)
{
CheckRange(data, offset, count);
CheckMaxFrameSize(count);
EnsureBuffer(CompressTool.GetMaxCompressedLength(count));
BufferUsage = CompressTool.Compress(data, offset, count, Buffer, 0);
DataLength = count;
Checksum = ComputeMasked(data, offset, count);
Type = SnappyFrameType.Compressed;
}
private void DoCompressionBenchmark(int size)
{
Benchmark.Run("Compressing", size, benchmark =>
{
var output = new byte[CompressTool.GetMaxCompressedLength(benchmark.Input.Length)];
int length = 0;
benchmark.Stopwatch.Start();
for (int i = 0; i < benchmark.Iterations; ++i)
{
length = CompressTool.Compress(benchmark.Input, 0, benchmark.Input.Length, output, 0);
}
benchmark.Stopwatch.Stop();
var roundtrip = new byte[benchmark.Input.Length];
var roundtripLength = CompressTool.Uncompress(output, 0, length, roundtrip, 0);
Assert.IsTrue(benchmark.Input.SequenceEqual(roundtrip.Take(roundtripLength)));
benchmark.Note = String.Format(" ({0:0.00 %})", length / (double)benchmark.Input.Length);
});
}
private Task DoAsyncCompressionOneParaBenchmark(int size)
{
return(Task.Factory.StartNew(() =>
{
Benchmark.Run("Compressing", size, benchmark =>
{
var output = new byte[CompressTool.GetMaxCompressedLength(benchmark.Input.Length)];
int length = 0;
benchmark.Stopwatch.Start();
for (int i = 0; i < benchmark.Iterations; ++i)
{
output = CompressTool.Compress(benchmark.Input);
length = output.Length;
}
benchmark.Stopwatch.Stop();
var roundtrip = CompressTool.Uncompress(output);
Assert.IsTrue(benchmark.Input.SequenceEqual(roundtrip));
benchmark.Note = String.Format(" ({0:0.00 %})", length / (double)benchmark.Input.Length);
});
}));
}
