LedDeviceUdpE131.h

#pragma once

// hyperion includes
#include "ProviderUdp.h"

#include <QUuid>

#define E131_DEFAULT_PORT 5568

/* E1.31 Packet Offsets */
#define E131_ROOT_PREAMBLE_SIZE 0
#define E131_ROOT_POSTAMBLE_SIZE 2
#define E131_ROOT_ID 4
#define E131_ROOT_FLENGTH 16
#define E131_ROOT_VECTOR 18
#define E131_ROOT_CID 22

#define E131_FRAME_FLENGTH 38
#define E131_FRAME_VECTOR 40
#define E131_FRAME_SOURCE 44
#define E131_FRAME_PRIORITY 108
#define E131_FRAME_RESERVED 109
#define E131_FRAME_SEQ 111
#define E131_FRAME_OPT 112
#define E131_FRAME_UNIVERSE 113

#define E131_DMP_FLENGTH 115
#define E131_DMP_VECTOR 117
#define E131_DMP_TYPE 118
#define E131_DMP_ADDR_FIRST 119
#define E131_DMP_ADDR_INC 121
#define E131_DMP_COUNT 123
#define E131_DMP_DATA 125

/* E1.31 Packet Structure */
typedef union
{
    struct
    {
        /* Root Layer */
        uint16_t preamble_size;
        uint16_t postamble_size;
        uint8_t  acn_id[12];
        uint16_t root_flength;
        uint32_t root_vector;
        char     cid[16];

        /* Frame Layer */
        uint16_t frame_flength;
        uint32_t frame_vector;
        char     source_name[64];
        uint8_t  priority;
        uint16_t reserved;
        uint8_t  sequence_number;
        uint8_t  options;
        uint16_t universe;

        /* DMP Layer */
        uint16_t dmp_flength;
        uint8_t  dmp_vector;
        uint8_t  type;
        uint16_t first_address;
        uint16_t address_increment;
        uint16_t property_value_count;
        uint8_t  property_values[513];
    } __attribute__((packed));

    uint8_t raw[638];
} e131_packet_t;

/* defined parameters from http://tsp.esta.org/tsp/documents/docs/BSR_E1-31-20xx_CP-2014-1009r2.pdf */
#define VECTOR_ROOT_E131_DATA                   0x00000004
#define VECTOR_ROOT_E131_EXTENDED               0x00000008
#define VECTOR_DMP_SET_PROPERTY                 0x02
#define VECTOR_E131_DATA_PACKET                 0x00000002
#define VECTOR_E131_EXTENDED_SYNCHRONIZATION    0x00000001
#define VECTOR_E131_EXTENDED_DISCOVERY          0x00000002
#define VECTOR_UNIVERSE_DISCOVERY_UNIVERSE_LIST 0x00000001
#define E131_E131_UNIVERSE_DISCOVERY_INTERVAL   10         // seconds
#define E131_NETWORK_DATA_LOSS_TIMEOUT          2500       // milli econds
#define E131_DISCOVERY_UNIVERSE                 64214
#define DMX_MAX                                 512        // 512 usable slots

class LedDeviceUdpE131 : public ProviderUdp
{
public:
    LedDeviceUdpE131(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_dmxChannelCount);

    e131_packet_t e131_packet;
    uint8_t _e131_seq = 0;
    uint8_t _e131_universe = 1;
    uint8_t _acn_id[12] = {0x41, 0x53, 0x43, 0x2d, 0x45, 0x31, 0x2e, 0x31, 0x37, 0x00, 0x00, 0x00 };
    QString _e131_source_name;
    QUuid _e131_cid;
};