decoder: rework how to swap frame layout.

[apps/agl-service-can-low-level.git] / low-can-binding / can / signals.hpp

diff --git a/low-can-binding/can/signals.hpp b/low-can-binding/can/signals.hpp
index 32cd760..bf77998 100755 (executable)
--- a/low-can-binding/can/signals.hpp
+++ b/low-can-binding/can/signals.hpp
@@ -60,6 +60,14 @@ typedef openxc_DynamicField (*signal_decoder)(signal_t& signal, std::shared_ptr<
 typedef uint64_t (*signal_encoder)(signal_t& signal,
                 const openxc_DynamicField& field, bool* send);
 
+enum sign_t
+{
+               UNSIGNED = 0,
+               SIGN_BIT = 1,
+               ONES_COMPLEMENT = 2,
+               TWOS_COMPLEMENT = 3,
+               SIGN_BIT_EXTERN = 4
+};
 
 class signal_t
 {
@@ -100,7 +108,8 @@ private:
                                                                                If bool is true, that indicate that is a multiplexor
                                                                                If int is different of 0, that indicate the link with a multiplexor */
        bool is_big_endian_; /*!< is_big_endian - True if the signal's data are meant to be read as a big_endian */
-       bool is_signed_; /* !< is_signed_ - True if the data is signed */
+       sign_t sign_; /* !< sign_ - if the data is signed it indicates the encode */
+       int32_t bit_sign_position_; /*!< bit_sign_position_ - The bit that indicates the sign of the signal in its CAN message*/
        std::string unit_; /* !< unit_ - The unit of the data */
 
 public:
@@ -123,7 +132,8 @@ public:
                bool received,
                std::pair<bool, int> multiplex,
                bool is_big_endian,
-               bool is_signed,
+               sign_t sign,
+               int32_t bit_sign_position,
                std::string unit);
 
 
@@ -164,11 +174,13 @@ public:
        std::pair<float, uint64_t> get_last_value_with_timestamp() const;
        std::pair<bool, int> get_multiplex() const;
        bool get_is_big_endian() const;
-       bool get_is_signed() const;
+       sign_t get_sign() const;
+       int32_t get_bit_sign_position() const;
        const std::string get_unit() const;
 
        void set_parent(std::shared_ptr<message_definition_t> parent);
        void set_received(bool r);
        void set_last_value(float val);
        void set_timestamp(uint64_t timestamp);
+       void set_bit_position(uint32_t bit_position);
 };