caching

modules/cache.py

@@ -0,0 +1,26 @@
+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]
+
+        with open(track.path.absolute(), "rb") as f:
+            os.posix_fadvise(f.fileno(), 0, 0, os.POSIX_FADV_SEQUENTIAL)
+            os.posix_fadvise(f.fileno(), 0, 0, os.POSIX_FADV_NOREUSE)
+            os.posix_fadvise(f.fileno(), 0, 0, os.POSIX_FADV_WILLNEED)
+        with open(next, "rb") as f:
+            os.posix_fadvise(f.fileno(), 0, 0, os.POSIX_FADV_SEQUENTIAL)
+            os.posix_fadvise(f.fileno(), 0, 0, os.POSIX_FADV_NOREUSE)
+            os.posix_fadvise(f.fileno(), 0, 0, os.POSIX_FADV_WILLNEED)
+
+module = Module()

modules/write_playlists.py

@@ -1,4 +1,4 @@
-from . import PlayerModule, log95, Track
+from . import PlayerModule, log95, Track, Popen
 
 logger = log95.log95("PlayView")
 
@@ -6,7 +6,7 @@ class Module(PlayerModule):
     def __init__(self) -> None:
         self.playlist = []
     def on_new_playlist(self, playlist: list[Track]):
-        self.playlist = [str(t.path) for t in playlist]
+        self.playlist = [str(t.path.absolute()) for t in playlist]
     def on_new_track(self, index: int, track: Track):
         if str(track.path) != self.playlist[index]:
             # discrepancy, which means that the playing file was modified by the active modifier