move common package to root level

pyModeS/__init__.py

@@ -2,11 +2,11 @@ import os
 import warnings
 
 try:
-    from .decoder import c_common as common
-    from .decoder.c_common import *
+    from . import c_common as common
+    from .c_common import *
 except:
-    from .decoder import common
-    from .decoder.common import *
+    from . import common
+    from .common import *
 
 from .decoder import tell
 from .decoder import adsb
@@ -15,6 +15,9 @@ from .decoder import bds
 from .extra import aero
 from .extra import tcpclient
 
+from .encoder import encode_adsb
+
+
 warnings.simplefilter("once", DeprecationWarning)
 
 dirpath = os.path.dirname(os.path.realpath(__file__))

pyModeS/common.py

@@ -41,10 +41,8 @@ def crc(msg, encode=False):
     # the CRC generator
     G = [int("11111111", 2), int("11111010", 2), int("00000100", 2), int("10000000", 2)]
 
-    if encode and isinstance(msg, str):
+    if encode:
         msg = msg[:-6] + "000000"
-    elif encode:
-        msg = msg[:-6] + b"000000"
 
     msgbin = hex2bin(msg)
     msgbin_split = wrap(msgbin, 8)

pyModeS/decoder/bds/__init__.py

@@ -21,12 +21,7 @@ Common functions for Mode-S decoding
 import numpy as np
 
 from pyModeS.extra import aero
-
-try:
-    from pyModeS.decoder import c_common as common
-except:
-    from pyModeS.decoder import common
-
+from pyModeS import common
 
 from pyModeS.decoder.bds import (
     bds05,