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from enum import Enum
from datetime import datetime
def _bit_unmask(val, length=None):
rv = tuple(reversed(tuple(int(x) for x in tuple('{0:0b}'.format(val)))))
if length and len(rv) < length:
return rv + ((0,) * (length - len(rv)))
return rv
def parse_enum_bitmask(enum, value):
"""
Returns tuple of enum values, which was set to 1 in bitmask
"""
return tuple(
enum(i)
for i, x in enumerate(
_bit_unmask(value, length=len(enum)))
if x
)
def pack_bitmask(values):
rv = 0
for val in values:
if isinstance(val, Enum):
val = val.value
rv |= (1 << val)
return rv
def parse_mdc_time(day_part, hour, minute, second=0):
"""
PM = 0x00
AM = 0x01
"""
return datetime.strptime(
f'{day_part and "AM" or "PM"} {hour} {minute} {second}',
'%p %I %M %S').time()
def pack_mdc_time(time):
time = time.strftime('%p %I %M %S').split()
return int(time[0] == 'AM'), int(time[1]), int(time[2]), int(time[3])
def repr_hex(value):
# return ' '.join(f'{x:02x}/{x}' for x in value)
return ':'.join(f'{x:02x}' for x in value)
def parse_hex(value):
return value and bytes(int(x, 16) for x in value.split(':')) or b''
def parse_videowall_model(value):
"""
Splits coordinates byte (with y, x representation) to (x, y) tuple
"""
return divmod(value, 1 << 4)[::-1]
def pack_videowall_model(value):
"""
Converts (x, y) tuple to one coordinates byte (with y, x representation)
"""
return [(value[1] * 16) + value[0]]
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