Lawo.EmberPlusSharp.S101.DeframingStream.ReadByte C# (CSharp) Method

        private bool ReadByte(ReadBuffer readBuffer)
        {
            var currentByte = readBuffer[readBuffer.Index++];

            switch (this.state)
            {
                case State.BeforeFrame:
                    if (currentByte == Frame.BeginOfFrame)
                    {
                        this.state = State.InFrame;
                    }
                    else
                    {
                        this.outOfFrameByteReceived(currentByte);
                    }

                    break;
                case State.InFrame:
                    if (currentByte < Frame.InvalidStart)
                    {
                        this.crc = Crc.AddCrcCcitt(this.crc, currentByte);
                        this.decodedQueue.Enqueue(currentByte);
                    }
                    else
                    {
                        switch (currentByte)
                        {
                            case Frame.EscapeByte:
                                this.state = State.InFrameEscaped;
                                break;
                            case Frame.BeginOfFrame:
                                this.decodedQueue.Clear();
                                this.crc = 0xFFFF;
                                break;
                            case Frame.EndOfFrame:
                                this.state = State.AfterFrame;

                                if (this.crc != 0xF0B8)
                                {
                                    this.decodedQueue.Clear();
                                }

                                return false;
                            default:
                                this.state = State.AfterFrame;
                                this.decodedQueue.Clear();
                                break;
                        }
                    }

                    break;
                case State.InFrameEscaped:
                    if (currentByte >= Frame.InvalidStart)
                    {
                        this.state = State.AfterFrame;
                        this.decodedQueue.Clear();
                    }

                    currentByte = (byte)(currentByte ^ Frame.EscapeXor);
                    this.crc = Crc.AddCrcCcitt(this.crc, currentByte);
                    this.decodedQueue.Enqueue(currentByte);
                    this.state = State.InFrame;
                    break;
            }

            return true;
        }
    }