LedDeviceUdpArtNet.h

#pragma once

// hyperion includes
#include "ProviderUdp.h"

#include <QUuid>

#define ArtNet_DEFAULT_PORT 5568

#define DMX_MAX         512        // 512 usable slots

// http://stackoverflow.com/questions/16396013/artnet-packet-structure
typedef union
{
    struct {
        char        ID[8];      // "Art-Net"
        uint16_t    OpCode;     // See Doc. Table 1 - OpCodes eg. 0x5000 OpOutput / OpDmx
        uint16_t    ProtVer;    // 0x0e00 (aka 14)
        uint8_t     Sequence;   // monotonic counter
        uint8_t     Physical;   // 0x00
        uint8_t     SubUni;     // low universe (0-255)
        uint8_t     Net;        // high universe (not used)
        uint16_t    Length;     // data length (2 - 512)
        uint8_t     Data[ DMX_MAX ];    // universe data
    } __attribute__((packed));

    uint8_t raw[ 18 + DMX_MAX ];

} artnet_packet_t;

class LedDeviceUdpArtNet : public ProviderUdp
{
public:
    LedDeviceUdpArtNet(const QJsonObject &deviceConfig);

    bool init(const QJsonObject &deviceConfig);

    static LedDevice* construct(const QJsonObject &deviceConfig);


private:
    virtual int write(const std::vector<ColorRgb> &ledValues);

    void prepare(const unsigned this_universe, const unsigned this_sequence, const unsigned this_dmxChannelCount);


    artnet_packet_t artnet_packet;
    uint8_t _artnet_seq = 1;
    uint8_t _artnet_channelsPerFixture = 3;
    unsigned _artnet_universe = 1;
};