读取.blf CAN文件的标头

import struct

def read_blf_header(file_path):
    with open(file_path, 'rb') as file:
        # Read the first few bytes to get the header information
        header_data = file.read(32)  # Assuming the header is 32 bytes long
        
        # Unpack the binary data according to the .blf specification
        # This is a hypothetical example; actual format may vary
        header = struct.unpack('!IQQQ', header_data)
        
        # Assuming the format is:
        # - 4 bytes for file creation time (UNIX timestamp)
        # - 8 bytes for start time (UNIX timestamp)
        # - 8 bytes for end time (UNIX timestamp)
        # - 8 bytes for data type identifier
        
        creation_time, start_time, end_time, data_type = header
        
        return {
            'creation_time': creation_time,
            'start_time': start_time,
            'end_time': end_time,
            'data_type': data_type
        }

# Example usage
header_info = read_blf_header('example.blf')
print(header_info)