# HG changeset patch
# User Amine Sehili <amine.sehili@gmail.com>
# Date 1551208818 -3600
# Node ID 3439ba35aba05aaabcce26df4548d34088f1bf41
# Parent  6ed3a1eea98dd6fb07c48870875e2bafd84b7566
Normalize user_channel in _FileAudioSource and make it a property

diff -r 6ed3a1eea98d -r 3439ba35aba0 auditok/io.py
--- a/auditok/io.py	Mon Feb 25 20:16:56 2019 +0100
+++ b/auditok/io.py	Tue Feb 26 20:20:18 2019 +0100
@@ -457,12 +457,13 @@
     def __init__(self, sampling_rate, sample_width, channels, use_channel):
         AudioSource.__init__(self, sampling_rate, sample_width, channels)
         self._audio_stream = None
+        self._use_channel = _normalize_use_channel(use_channel)
         if channels > 1:
             self._extract_selected_channel = partial(
                 _extract_selected_channel,
                 channels=channels,
                 sample_width=sample_width,
-                use_channel=use_channel,
+                use_channel=self._use_channel,
             )
         else:
             self._extract_selected_channel = lambda x: x
@@ -471,6 +472,10 @@
         if self.is_open():
             self.close()
 
+    @property
+    def use_channel(self):
+        return self._use_channel
+
     def is_open(self):
         return self._audio_stream is not None