Ethernet100BaseTXDecoder.h

Go to the documentation of this file.

/***********************************************************************************************************************
*                                                                                                                      *
* libscopeprotocols                                                                                                    *
*                                                                                                                      *
* Copyright (c) 2012-2026 Andrew D. Zonenberg and contributors                                                         *
* All rights reserved.                                                                                                 *
*                                                                                                                      *
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the     *
* following conditions are met:                                                                                        *
*                                                                                                                      *
*    * Redistributions of source code must retain the above copyright notice, this list of conditions, and the         *
*      following disclaimer.                                                                                           *
*                                                                                                                      *
*    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the       *
*      following disclaimer in the documentation and/or other materials provided with the distribution.                *
*                                                                                                                      *
*    * Neither the name of the author nor the names of any contributors may be used to endorse or promote products     *
*      derived from this software without specific prior written permission.                                           *
*                                                                                                                      *
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED   *
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL *
* THE AUTHORS BE HELD LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES        *
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR       *
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT *
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE       *
* POSSIBILITY OF SUCH DAMAGE.                                                                                          *
*                                                                                                                      *
***********************************************************************************************************************/
 
#ifndef Ethernet100BaseTXDecoder_h
#define Ethernet100BaseTXDecoder_h
 
class Ethernet100BaseTXDescramblerConstants
{
public:
    uint32_t    len;
    uint32_t    samplesPerThread;
    uint32_t    startOffset;
};
 
class Ethernet100BaseTX4b5bConstants
{
public:
    uint32_t    len;
    uint32_t    startOffset;
};
 
class Ethernet100BaseTXDecoder : public EthernetProtocolDecoder
{
public:
    Ethernet100BaseTXDecoder(const std::string& color);
 
    virtual void Refresh(vk::raii::CommandBuffer& cmdBuf, std::shared_ptr<QueueHandle> queue) override;
    static std::string GetProtocolName();
 
    PROTOCOL_DECODER_INITPROC(Ethernet100BaseTXDecoder)
 
protected:
    int GetState(float voltage)
    {
        if(voltage > 0.5)
            return 1;
        else if(voltage < -0.5)
            return -1;
        else
            return 0;
    }
 
    void DecodeStates(
        vk::raii::CommandBuffer& cmdBuf,
        std::shared_ptr<QueueHandle> queue,
        SparseAnalogWaveform* samples);
 
    bool TrySync(size_t idle_offset);
 
    void Descramble(vk::raii::CommandBuffer& cmdBuf, size_t idle_offset);
 
    AcceleratorBuffer<uint8_t> m_phyBits;
 
    AcceleratorBuffer<uint8_t> m_descrambledBits;
 
    AcceleratorBuffer<uint8_t> m_trySyncOutput;
 
    AcceleratorBuffer<uint32_t> m_findSSDOutput;
 
    AcceleratorBuffer<uint32_t> m_lfsrTable;
 
    std::shared_ptr<ComputePipeline> m_mlt3DecodeComputePipeline;
 
    std::shared_ptr<ComputePipeline> m_trySyncComputePipeline;
 
    std::shared_ptr<ComputePipeline> m_descrambleComputePipeline;
 
    std::shared_ptr<ComputePipeline> m_findSSDComputePipeline;
 
    std::shared_ptr<ComputePipeline> m_4b5bDecodeComputePipeline;
 
    AcceleratorBuffer<uint8_t> m_4b5bSamples;
 
    AcceleratorBuffer<uint64_t> m_4b5bTimestamps;
 
    std::unique_ptr<vk::raii::CommandPool> m_cmdPool;
 
    std::unique_ptr<vk::raii::CommandBuffer> m_transferCmdBuf;
 
    //@brief Queue for transfers
    std::shared_ptr<QueueHandle> m_transferQueue;
};
 
#endif