Fix control code / link magazine decoding

ali1234 · Feb 13, 2019 · f2e7c7c · f2e7c7c
1 parent 01dddfd
commit f2e7c7c
Showing 1 changed file with 4 additions and 4 deletions.
diff --git a/teletext/t42/elements.py b/teletext/t42/elements.py
@@ -48,8 +48,8 @@ def from_bytes(cls, bytes):
             errors += e
             values.append(v)
 
-        subpage = (values[0] & 0x7f) | ((values[1] & 0x3f) <<8)
-        control = (values[0] >> 7) | (values[1] >> 5) | (values[2] << 3)
+        subpage = (values[0] & 0x7f) | ((values[1] & 0x3f) << 8)
+        control = (values[0] >> 7) | ((values[1] >> 5) & 0x6) | (values[2] << 3)
         return cls(page, subpage, control, errors)
 
     def to_bytes(self):
@@ -86,8 +86,8 @@ def from_bytes(cls, bytes, current_magazine):
             errors += e
             values.append(v)
 
-        subpage = (values[0] & 0x7f) | ((values[1] & 0x3f) <<8)
-        magazine = (values[0] >> 7) | ((values[1] >> 6)<<1)
+        subpage = (values[0] & 0x7f) | ((values[1] & 0x3f) << 8)
+        magazine = (values[0] >> 7) | ((values[1] >> 5) & 0x6)
         return cls(magazine^current_magazine, page, subpage, errors)
 
     def __str__(self):