Strictly validates a FIT file and retains raw fields for selected messages. This entry point does not load the semantic FIT profile or format field values. It accepts one complete FIT input, including its CRC; there is no force/recovery mode.
Selected messages in wire order, with defensive byte copies, plus nonfatal timestamp issues. Native timestamps use FIT seconds rather than Unix time.
FitMessageReaderError for invalid input/options, a size-limit violation, header/checksum errors or invalid message structure.
Strictly validates a FIT file and retains raw fields for selected messages. This entry point does not load the semantic FIT profile or format field values. It accepts one complete FIT input, including its CRC; there is no force/recovery mode.