move cpu_count to util module; credit @storrgie

beets/util/__init__.py

@@ -524,3 +524,29 @@ def plurality(objs):
             res = obj
 
     return res, max_freq
+
+def cpu_count():
+    """Return the number of hardware thread contexts (cores or SMT
+    threads) in the system.
+    """
+    # Adapted from observing the soundconverter project:
+    # https://github.com/kassoulet/soundconverter
+    if sys.platform == 'win32':
+        try:
+            num = int(os.environ['NUMBER_OF_PROCESSORS'])
+        except (ValueError, KeyError):
+            num = 0
+    elif sys.platform == 'darwin':
+        try:
+            num = int(os.popen('sysctl -n hw.ncpu').read())
+        except ValueError:
+            num = 0
+    else:
+        try:
+            num = os.sysconf('SC_NPROCESSORS_ONLN')
+        except (ValueError, OSError, AttributeError):
+            num = 0
+    if num >= 1:
+        return num
+    else:
+        return 1

beetsplug/convert.py

@@ -29,31 +29,6 @@ DEVNULL = open(os.devnull, 'wb')
 conf = {}
 
 
-def _cpu_count():
-    """ Returns the number of CPUs in the system.
-    Code was adapted from observing the soundconverter project:
-    https://github.com/kassoulet/soundconverter
-    """
-    if sys.platform == 'win32':
-        try:
-            num = int(os.environ['NUMBER_OF_PROCESSORS'])
-        except (ValueError, KeyError):
-            num = 0
-    elif sys.platform == 'darwin':
-        try:
-            num = int(os.popen('sysctl -n hw.ncpu').read())
-        except ValueError:
-            num = 0
-    else:
-        try:
-            num = os.sysconf('SC_NPROCESSORS_ONLN')
-        except (ValueError, OSError, AttributeError):
-            num = 0
-    if num >= 1:
-        return num
-    else:
-        return 1
-
 
 def encode(source, dest):
     log.info('Started encoding ' + source)
@@ -144,7 +119,7 @@ class ConvertPlugin(BeetsPlugin):
     def configure(self, config):
         conf['dest'] = ui.config_val(config, 'convert', 'dest', None)
         conf['threads'] = ui.config_val(config, 'convert', 'threads',
-            _cpu_count())
+            util.cpu_count())
         conf['flac'] = ui.config_val(config, 'convert', 'flac', 'flac')
         conf['lame'] = ui.config_val(config, 'convert', 'lame', 'lame')
         conf['opts'] = ui.config_val(config, 'convert',

docs/changelog.rst

@@ -5,7 +5,8 @@ Changelog
 -----------------------
 
 * New plugin: :doc:`/plugins/convert` transcodes music and embeds album art
-  while copying to a separate directory. Thanks to Jakob Schnitzer.
+  while copying to a separate directory. Thanks to Jakob Schnitzer and Andrew G.
+  Dunn.
 * New plugin: :doc:`/plugins/fuzzy_search` lets you find albums and tracks using
   fuzzy string matching so you don't have to type (or even remember) their exact
   names. Thanks to Philippe Mongeau.