microphone.py 文件源码

def _space_separated_little_endian(integer_value, byte_len):
    """INTERNAL. Get an integer in format for WAV file header."""

    if byte_len <= 1:
        pack_type = '<B'
    elif byte_len <= 2:
        pack_type = '<H'
    elif byte_len <= 4:
        pack_type = '<I'
    elif byte_len <= 8:
        pack_type = '<Q'
    else:
        PTLogger.info("Value cannot be represented in 8 bytes - exiting")
        exit()

    hex_string = pack(pack_type, integer_value)
    temp = hexlify(hex_string).decode()
    return ' '.join([temp[i:i + 2] for i in range(0, len(temp), 2)])