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RadioPlayer/modules/cache.py
2025-11-06 18:56:17 +01:00

26 lines
1.1 KiB
Python

import os
from . import PlayerModule, Track
class Module(PlayerModule):
def __init__(self) -> None:
self.playlist = []
def on_new_playlist(self, playlist: list[Track]):
self.playlist = [t.path.absolute() for t in playlist]
def on_new_track(self, index: int, track: Track):
if track.path.absolute().as_posix() != self.playlist[index].as_posix():
# discrepancy, which means that the playing file was modified by the active modifier
# we are playing a file that was not determined in the playlist, that means it was chosen by the active modifier and made up on the fly
next = self.playlist[index]
else:
next = self.playlist[index+1]
def prefetch(path):
with open(path, "rb") as f:
fd = f.fileno()
os.posix_fadvise(fd, 0, 0, os.POSIX_FADV_SEQUENTIAL)
os.posix_fadvise(fd, 0, 0, os.POSIX_FADV_NOREUSE)
os.posix_fadvise(fd, 0, 0, os.POSIX_FADV_WILLNEED)
prefetch(track.path.absolute())
prefetch(next)
module = Module()