uwranging_tdoa_hdr.h

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#ifndef UWRANGING_TDOA_HDR_H
#define UWRANGING_TDOA_HDR_H
 
#include <packet.h>
#include <sys/types.h>
#include <cmath>
 
#define MAX_NUM_NODES 32
#define HDR_RANGING_TDOA(p)    \
    (hdr_ranging_tdoa::access( \
            p)) 
extern packet_t PT_UWRANGING_TDOA;
 
typedef float uwrange_time_t; 
typedef uint8_t uwrange_pkt_t; 
typedef uint8_t uwrange_node_t; 
typedef struct tdoa_entry {
    uwrange_time_t time; 
    uwrange_pkt_t id; 
    uwrange_node_t node; 
    tdoa_entry(uwrange_time_t time, uwrange_node_t node, uwrange_pkt_t id)
        : time(time)
        , id(id)
        , node(node)
    {
    }
 
    tdoa_entry()
        : tdoa_entry(-1., -1, -1)
    {
    }
} tdoa_entry;
 
typedef struct hdr_ranging_tdoa {
    static int offset_; 
    uwrange_pkt_t source_pkt_id; 
    uwrange_node_t source_node_id; 
    uwrange_node_t times_size_; 
    tdoa_entry times_[MAX_NUM_NODES]; 
    inline uint8_t &
    times_size()
    {
        return times_size_;
    }
 
    size_t
    getSize() const
    {
        return std::ceil(times_size_ * sizeof(tdoa_entry) 
                   + sizeof(uwrange_node_t) + sizeof(uwrange_pkt_t));
    }
 
    static size_t
    getSize(int entries)
    {
        return std::ceil(entries * sizeof(tdoa_entry) 
                   + sizeof(uwrange_node_t) + sizeof(uwrange_pkt_t));
    }
 
    inline static int &
    offset()
    {
        return offset_;
    }
 
    inline static struct hdr_ranging_tdoa *
    access(const Packet *p)
    {
        return (struct hdr_ranging_tdoa *) p->access(offset_);
    }
} hdr_ranging_tdoa;
 
#endif