added niceness

src/jarklin/_commands/_get_config.py

@@ -5,6 +5,7 @@
 from functools import cache
 import configlib.finder
 from ._logging import configure_logging
+from ._process_config import configure_process
 
 
 @cache
@@ -22,4 +23,5 @@ def get_config() -> 'configlib.ConfigInterface':
     else:
         config = configlib.load(fp=fp)
         configure_logging(config=config)
+        configure_process(config=config)
         return config

src/jarklin/_commands/_logging.py

@@ -12,7 +12,7 @@
 DEFAULT_DATEFORMAT = "%Y-%m-%d %H:%M:%S"
 
 
-def configure_logging(config: ConfigInterface):
+def configure_logging(config: ConfigInterface) -> None:
     handlers = []
 
     if config.getboolean('logging', 'console', fallback=True):

src/jarklin/_commands/_process_config.py

@@ -0,0 +1,20 @@
+# -*- coding=utf-8 -*-
+r"""
+
+"""
+import os
+import logging
+from configlib import ConfigInterface
+
+
+def configure_process(config: ConfigInterface) -> None:
+    if hasattr(os, 'nice'):
+        niceness = os.environ.get('NICENESS')
+        if niceness is not None:
+            niceness = int(niceness)
+        if niceness is None:
+            niceness = config.getint('process', 'niceness', fallback=None)
+        if niceness is not None:
+            current = os.nice(0)
+            current = os.nice(-current + niceness)
+            logging.debug(f'Updated Niceness to: {current}')

src/jarklin/cache/video.py

@@ -89,6 +89,7 @@ def generate_previews(self) -> None:
             .filter('select', "+".join(f"eq(n,{frame})" for frame in extract_frames))
             .filter('scale', *scale)
             .output(str(self.previews_cache.joinpath("%d.jpg")), vframes=len(extract_frames), vsync=0)
+            # .global_args('-threads', str(self.config.getint('cache', 'video', 'ffmpeg', 'threads', fallback=0)))
             .run(quiet=True, overwrite_output=True)
         )