decode_database.h

Go to the documentation of this file.

 
#ifndef DECODE_DATABASE_H
#define DECODE_DATABASE_H
 
#include <cstdint>
#include <string>
#include <unordered_map>
#include <vector>
 
enum class ByteOrder {
    Intel,
    Motorola
};
 
enum class ValueType {
    Unsigned,
    Signed
};
 
struct DecodeSignal {
    std::string name;                   
    std::uint32_t startBit;             
    std::uint32_t length;               
    ByteOrder byteOrder;                
    ValueType valueType;                
    double factor;                      
    double offset;                      
    double minimum;                     
    double maximum;                     
    std::string unit;                   
    std::vector<std::string> receivers; 
    std::string comment;                
    DecodeSignal()
        : name(), startBit(0U), length(0U), byteOrder(ByteOrder::Intel), valueType(ValueType::Unsigned), factor(1.0), offset(0.0), minimum(0.0), maximum(0.0), unit(), receivers(), comment() {
    }
};
 
struct DecodeFrame {
    std::string name;                  
    std::uint32_t canId;               
    bool isExtended;                   
    std::uint8_t dlc;                  
    std::uint32_t pgn;                 
    bool hasPgn;                       
    std::string transmitter;           
    std::string comment;               
    std::vector<DecodeSignal> signals; 
    DecodeFrame()
        : name(), canId(0U), isExtended(false), dlc(0U), pgn(0U), hasPgn(false), transmitter(), comment(), signals() {
    }
};
 
struct FrameKey {
    std::uint32_t canId;
    bool isExtended;
 
    FrameKey()
        : canId(0U), isExtended(false) {
    }
 
    FrameKey(std::uint32_t id, bool extended)
        : canId(id), isExtended(extended) {
    }
 
    bool operator==(const FrameKey &other) const {
        return (canId == other.canId) && (isExtended == other.isExtended);
    }
};
 
struct FrameKeyHasher {
    std::size_t operator()(const FrameKey &key) const {
        const std::size_t a = static_cast<std::size_t>(key.canId);
        const std::size_t b = key.isExtended ? 1U : 0U;
        return (a * 1315423911U) ^ b;
    }
};
 
struct DecodeDatabase {
    std::vector<DecodeFrame> frames;
    std::unordered_map<FrameKey, std::size_t, FrameKeyHasher> frameIndexByKey;
};
 
#endif /* DECODE_DATABASE_H */