ffplayout/tests/run_time_warp.py
2022-01-26 12:01:00 +01:00

69 lines
1.6 KiB
Python
Executable File

#!/usr/bin/env python3
"""
Test script, for simulating speed up the clock.
With the WARP_FACTOR you can transform a second to a fraction.
With this functionality it is possible to run a 24 hours playlist in a minute,
and debug the playlist reader.
"""
import datetime
import os
import sys
import time
from zoneinfo import ZoneInfo
import time_machine
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
# set time zone
_TZ = ZoneInfo("Europe/Berlin")
# fake date and time
SOURCE_TIME = [2021, 2, 12, 5, 0, 0]
USE_TIME_MACHINE = True
# warp time by factor
WARP_FACTOR = 1000
def warp_time():
get_source = GetSourceIter()
stamp = time.time()
duration = 0
with time_machine.travel(stamp, tick=False) as traveller:
for node in get_source.next():
duration = node['out'] - node['seek']
messenger.info(f'Play: "{node["source"]}"')
warp_duration = duration / WARP_FACTOR
messenger.debug(f'Original duration {duration} '
f'warped to {warp_duration:.3f}')
time.sleep(warp_duration)
stamp += duration
traveller.move_to(stamp)
@time_machine.travel(datetime.datetime(*SOURCE_TIME, tzinfo=_TZ))
def run_in_time_machine():
warp_time()
def run_in_time_warp():
warp_time()
if __name__ == '__main__':
from ffplayout.player.playlist import GetSourceIter
from ffplayout.utils import messenger
try:
if USE_TIME_MACHINE:
run_in_time_machine()
else:
warp_time()
except KeyboardInterrupt:
print('Interrupted')