/// <summary>
/// Processes the packet within the context. Returns true whether the packet was processed or throttled.
/// </summary>
/// <param name="channel">The through which the packet is coming/going out.</param>
/// <param name="context">The packet context for this operation.</param>
/// <returns>True whether the packet was processed or throttled, false otherwise.</returns>
public static ProcessingState Process(Emitter.Connection channel, ProcessingContext context)
{
// Get the buffer to decompress
var input = context.Buffer.AsSegment();
try
{
// Reserve the buffer, we know exactly how many bytes to decompress
var output = context.BufferReserve(
(int)VarInt.UvarInt(input.Array, input.Offset).Value
);
// Decompress
var length = Snappy.Decode(
input.Array, input.Offset, input.Count,
output.Array, output.Offset, output.Size
);
// Switch the buffer to the decompressed one
context.SwitchBuffer(output);
}
catch (Exception ex)
{
ex.Log();
}
return(ProcessingState.Success);
}
/// <summary>
/// Applies a compressin to the buffer and returns a result within a stream.
/// </summary>
/// <param name="buffer">The buffer to compress.</param>
/// <param name="padding">The padding offset to pre-allocate.</param>
/// <param name="context">The context of the processing.</param>
/// <returns>The length segment</returns>
public static BufferSegment Process(ByteStream stream, int padding, ProcessingContext context)
{
stream.Flush();
// Calculate the maximum compressed length
var outSize = Snappy.MaxEncodedLen((int)stream.Length);
var output = context.BufferReserve(outSize + padding);
// Acquire a snappy encoder which comes in with a table for state
using (var snappy = Snappy.Acquire())
{
output.Size = snappy.Encode(stream.GetBuffer(), 0, (int)stream.Length, output, padding) + padding;
return(output);
}
}
