Merge pull request #1494 from h-mayorquin/plexon_for_apple_silicon

Plexon2 support for apple 64 bits

neo/rawio/plexon2rawio/plexon2rawio.py

@@ -107,7 +107,7 @@ def __init__(self, filename, pl2_dll_file_path=None):
         # download default PL2 dll once if not yet available
         if pl2_dll_file_path is None:
             architecture = platform.architecture()[0]
-            if architecture == "64bit" and platform.system() == "Windows":
+            if architecture == "64bit" and platform.system() in ["Windows", "Darwin"]: 
                 file_name = "PL2FileReader64.dll"
             else:  # Apparently wine uses the 32 bit version in linux
                 file_name = "PL2FileReader.dll"
@@ -120,21 +120,27 @@ def __init__(self, filename, pl2_dll_file_path=None):
                 dist = urlopen(url=url)
 
                 with open(pl2_dll_file_path, "wb") as f:
-                    print(f"Downloading plexon dll to {pl2_dll_file_path}")
+                    warnings.warn(f"dll file does not exist, downloading plexon dll to {pl2_dll_file_path}")
                     f.write(dist.read())
 
         # Instantiate wrapper for Windows DLL
         from neo.rawio.plexon2rawio.pypl2.pypl2lib import PyPL2FileReader
 
         self.pl2reader = PyPL2FileReader(pl2_dll_file_path=pl2_dll_file_path)
 
-        # Open the file.
-        self.pl2reader.pl2_open_file(self.filename)
-
-        # Verify the file handle is valid.
-        if self.pl2reader._file_handle.value == 0:
-            self.pl2reader._print_error()
-            raise Exception(f"Opening {self.filename} failed.")
+
+        reading_attempts = 10
+        for attempt in range(reading_attempts):
+            self.pl2reader.pl2_open_file(self.filename)
+
+            # Verify the file handle is valid.
+            if self.pl2reader._file_handle.value != 0:
+                # File handle is valid, exit the loop early
+                break
+            else:
+                if attempt == reading_attempts - 1:
+                    self.pl2reader._print_error()
+                    raise IOError(f"Opening {self.filename} failed after {reading_attempts} attempts.")
 
     def _source_name(self):
         return self.filename
@@ -151,7 +157,6 @@ def _parse_header(self):
         Source = namedtuple("Source", "id name sampling_rate n_samples")
         for c in range(self.pl2reader.pl2_file_info.m_TotalNumberOfAnalogChannels):
             achannel_info = self.pl2reader.pl2_get_analog_channel_info(c)
-
             # only consider active channels
             if not achannel_info.m_ChannelEnabled:
                 continue
@@ -267,8 +272,10 @@ def _parse_header(self):
                     # python is 1..12 https://docs.python.org/3/library/datetime.html#datetime.datetime
                     # so month needs to be tm_mon+1; also tm_sec could cause problems in the case of leap
                     # seconds, but this is harder to defend against.
+                    year = tmo.tm_year  # This has base 1900 in the c++ struct specification so we need to add 1900
+                    year += 1900
                     dt = datetime(
-                        year=tmo.tm_year,
+                        year=year,
                         month=tmo.tm_mon + 1,
                         day=tmo.tm_mday,
                         hour=tmo.tm_hour,
@@ -322,7 +329,6 @@ def _parse_header(self):
                 "m_OneBasedChannelInTrode",
                 "m_Source",
                 "m_Channel",
-                "m_Name",
                 "m_MaximumNumberOfFragments",
             ]
 

neo/rawio/plexon2rawio/pypl2/pypl2lib.py

@@ -24,8 +24,10 @@
         raise ImportError("Wine is not installed. Please install wine to use the PL2FileReader.dll")
 
     from zugbruecke import CtypesSession
-
-    ctypes = CtypesSession(log_level=100)
+    if platform.system() == "Darwin":
+        ctypes = CtypesSession(log_level=100, arch = 'win64')
+    else:
+        ctypes = CtypesSession(log_level=100)
 
 
 class tm(ctypes.Structure):
@@ -629,11 +631,9 @@ def pl2_get_spike_channel_info_by_name(self, channel_name):
         result = self.pl2_dll.PL2_GetSpikeChannelInfoByName(
             self._file_handle, channel_name, ctypes.byref(pl2_spike_channel_info)
         )
-
         if not result:
             self._print_error()
             return None
-
         return pl2_spike_channel_info
 
     def pl2_get_spike_channel_info_by_source(self, source_id, one_based_channel_index_in_source):