Merge pull request #1495 from cheydrick/issue1349

Patch for issue #1349 Issue with reading .pl2 files

Author: samuelgarcia

neo/rawio/plexon2rawio/plexon2rawio.py

@@ -130,6 +130,11 @@ def __init__(self, filename, pl2_dll_file_path=None):
 
         # 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.")
 
     def _source_name(self):
         return self.filename

neo/rawio/plexon2rawio/pypl2/pypl2lib.py

@@ -610,7 +610,7 @@ def pl2_get_spike_channel_info_by_name(self, channel_name):
 
         self.pl2_dll.PL2_GetSpikeChannelInfoByName.argtypes = (
             ctypes.c_int,
-            ctypes.c_char * len(channel_name),
+            ctypes.POINTER(ctypes.c_char),
             ctypes.POINTER(PL2SpikeChannelInfo),
         )
 
@@ -744,7 +744,7 @@ def pl2_get_spike_channel_data_by_name(self, channel_name):
 
         self.pl2_dll.PL2_GetSpikeChannelDataByName.argtypes = (
             ctypes.c_int,
-            ctypes.c_char,
+            ctypes.POINTER(ctypes.c_char),
             ctypes.POINTER(ctypes.c_ulonglong),
             ctypes.POINTER(ctypes.c_ulonglong),
             ctypes.POINTER(ctypes.c_ushort),