diff options
Diffstat (limited to 'src/can/can-decoder.hpp')
| -rw-r--r-- | src/can/can-decoder.hpp | 153 |
1 files changed, 19 insertions, 134 deletions
diff --git a/src/can/can-decoder.hpp b/src/can/can-decoder.hpp index 63d91d4e..326a2b73 100644 --- a/src/can/can-decoder.hpp +++ b/src/can/can-decoder.hpp @@ -21,139 +21,24 @@ class decoder_t { - public: - /* Public: Parse the signal's bitfield from the given data and return the raw - * value. - * - * signal - The signal to parse from the data. - * data - The data to parse the signal from. - * length - The length of the data array. - * - * Returns the raw value of the signal parsed as a bitfield from the given byte - * array. - */ - static float parseSignalBitfield(can_signal_t& signal, const can_message_t& message); - - /* Public: Find and return the corresponding string state for a CAN signal's - * raw integer value. - * - * This is an implementation of the SignalDecoder type signature, and can be - * used directly in the can_signal_t.decoder field. - * - * signal - The details of the signal that contains the state mapping. - * signals - The list of all signals. - * signalCount - the length of the signals array. - * value - The numerical value that should map to a state. - * send - An output argument that will be set to false if the value should - * not be sent for any reason. - * - * Returns a DynamicField with a string value if a matching state is found in - * the signal. If an equivalent isn't found, send is sent to false and the - * return value is undefined. - */ - static openxc_DynamicField stateDecoder(can_signal_t& signal, const std::vector<can_signal_t>& signals, - float value, bool* send); - - /* Public: Coerces a numerical value to a boolean. - * - * This is an implementation of the SignalDecoder type signature, and can be - * used directly in the can_signal_t.decoder field. - * - * signal - The details of the signal that contains the state mapping. - * signals - The list of all signals - * signalCount - The length of the signals array - * value - The numerical value that will be converted to a boolean. - * send - An output argument that will be set to false if the value should - * not be sent for any reason. - * - * Returns a DynamicField with a boolean value of false if the raw signal value - * is 0.0, otherwise true. The 'send' argument will not be modified as this - * decoder always succeeds. - */ - static openxc_DynamicField booleanDecoder(can_signal_t& signal, const std::vector<can_signal_t>& signals, - float value, bool* send); - - /* Public: Update the metadata for a signal and the newly received value. - * - * This is an implementation of the SignalDecoder type signature, and can be - * used directly in the can_signal_t.decoder field. - * - * This function always flips 'send' to false. - * - * signal - The details of the signal that contains the state mapping. - * signals - The list of all signals. - * signalCount - The length of the signals array. - * value - The numerical value that will be converted to a boolean. - * send - This output argument will always be set to false, so the caller will - * know not to publish this value to the pipeline. - * - * The return value is undefined. - */ - static openxc_DynamicField ignoreDecoder(can_signal_t& signal, const std::vector<can_signal_t>& signals, - float value, bool* send); - - /* Public: Wrap a raw CAN signal value in a DynamicField without modification. - * - * This is an implementation of the SignalDecoder type signature, and can be - * used directly in the can_signal_t.decoder field. - * - * signal - The details of the signal that contains the state mapping. - * signals - The list of all signals - * signalCount - The length of the signals array - * value - The numerical value that will be wrapped in a DynamicField. - * send - An output argument that will be set to false if the value should - * not be sent for any reason. - * - * Returns a DynamicField with the original, unmodified raw CAN signal value as - * its numeric value. The 'send' argument will not be modified as this decoder - * always succeeds. - */ - static openxc_DynamicField noopDecoder(can_signal_t& signal, const std::vector<can_signal_t>& signals, - float value, bool* send); - - - /* Public: Parse a signal from a CAN message, apply any required transforations - * to get a human readable value and public the result to the pipeline. - * - * If the can_signal_t has a non-NULL 'decoder' field, the raw CAN signal value - * will be passed to the decoder before publishing. - * - * signal - The details of the signal to decode and forward. - * message - The received CAN message that should contain this signal. - * signals - an array of all active signals. - * - * The decoder returns an openxc_DynamicField, which may contain a number, - * string or boolean. - */ - static openxc_DynamicField translateSignal(can_signal_t& signal, can_message_t& message, - const std::vector<can_signal_t>& signals); - - /* Public: Parse a signal from a CAN message and apply any required - * transforations to get a human readable value. - * - * If the can_signal_t has a non-NULL 'decoder' field, the raw CAN signal value - * will be passed to the decoder before returning. - * - * signal - The details of the signal to decode and forward. - * message - The CAN message that contains the signal. - * signals - an array of all active signals. - * send - An output parameter that will be flipped to false if the value could - * not be decoded. - * - * The decoder returns an openxc_DynamicField, which may contain a number, - * string or boolean. If 'send' is false, the return value is undefined. - */ - static openxc_DynamicField decodeSignal(can_signal_t& signal, const can_message_t& message, - const std::vector<can_signal_t>& signals, bool* send); - - /* Public: Decode a transformed, human readable value from an raw CAN signal - * already parsed from a CAN message. - * - * This is the same as decodeSignal(const can_signal_t&, CanMessage*, const can_signal_t&, int, - * bool*) but you must parse the bitfield value of the signal from the CAN - * message yourself. This is useful if you need that raw value for something - * else. - */ - static openxc_DynamicField decodeSignal(can_signal_t& signal, float value, +public: + static float parseSignalBitfield(can_signal_t& signal, const can_message_t& message); + + static openxc_DynamicField stateDecoder(can_signal_t& signal, const std::vector<can_signal_t>& signals, + float value, bool* send); + static openxc_DynamicField booleanDecoder(can_signal_t& signal, const std::vector<can_signal_t>& signals, + float value, bool* send); + static openxc_DynamicField ignoreDecoder(can_signal_t& signal, const std::vector<can_signal_t>& signals, + float value, bool* send); + static openxc_DynamicField noopDecoder(can_signal_t& signal, const std::vector<can_signal_t>& signals, + float value, bool* send); + + static openxc_DynamicField translateSignal(can_signal_t& signal, can_message_t& message, + const std::vector<can_signal_t>& signals); + + static openxc_DynamicField decodeSignal(can_signal_t& signal, const can_message_t& message, const std::vector<can_signal_t>& signals, bool* send); + + static openxc_DynamicField decodeSignal(can_signal_t& signal, float value, + const std::vector<can_signal_t>& signals, bool* send); };
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