Cleanup some debug print statements --> logging interface

lasp/__init__.py

@@ -6,5 +6,6 @@ from .lasp_imptube import *
 from .lasp_measurement import *
 from .lasp_octavefilter import *
 from .lasp_slm import *
+from .lasp_record import *
 from .lasp_siggen import *
 from .lasp_weighcal import *

lasp/device/lasp_daq.pyx

@@ -5,6 +5,7 @@ from .lasp_daqconfig cimport DaqConfiguration
 
 from cpython.ref cimport PyObject,Py_INCREF, Py_DECREF
 import numpy as np
+import logging
 
 __all__ = ['Daq']
 
@@ -82,7 +83,7 @@ cdef void audioCallbackPythonThreadFunction(void* voidsd) nogil:
         callback = <object> sd.pyCallback
         # print(f'Number of input channels: {ninchannels}')
         # print(f'Number of out channels: {noutchannels}')
-        fprintf(stderr, 'Sleep time: %d us\n', sleeptime_us)
+        # fprintf(stderr, 'Sleep time: %d us\n', sleeptime_us)
 
     while not sd.stopThread.load():
         with gil:
@@ -103,7 +104,7 @@ cdef void audioCallbackPythonThreadFunction(void* voidsd) nogil:
                     )
 
                 except Exception as e:
-                    print('exception in Cython callback for audio output: ', str(e))
+                    logging.error('exception in Cython callback for audio output: ', str(e))
                     return
 
                 sd.outQueue.enqueue(<double*> outbuffer)
@@ -113,7 +114,7 @@ cdef void audioCallbackPythonThreadFunction(void* voidsd) nogil:
                 # Waiting indefinitely on the queue...
                 inbuffer = <double*> sd.inQueue.dequeue()
                 if inbuffer == NULL:
-                    printf('Stopping thread...\n')
+                    logging.debug('Stopping thread...\n')
                     return
 
                 try:
@@ -130,7 +131,7 @@ cdef void audioCallbackPythonThreadFunction(void* voidsd) nogil:
                     )
 
                 except Exception as e:
-                    print('exception in cython callback for audio input: ', str(e))
+                    logging.error('exception in cython callback for audio input: ', str(e))
                     return
 
         CPPsleep_us(sleeptime_us);
@@ -142,8 +143,6 @@ cdef void audioCallbackPythonThreadFunction(void* voidsd) nogil:
         # Inputbuffer memory is owned by Numpy, so should not be free'ed
         inbuffer = NULL
 
-    fprintf(stderr, 'Exiting python thread...\n')
-
 cdef class Daq:
 
     def __cinit__(self, DeviceInfo pydevinfo, DaqConfiguration pydaqconfig):
@@ -177,7 +176,7 @@ cdef class Daq:
     def __dealloc__(self):
         # fprintf(stderr, "UlDaq.__dealloc__\n")
         if self.sd is not NULL:
-            fprintf(stderr, "UlDaq.__dealloc__: stopping stream.\n")
+            logging.debug("UlDaq.__dealloc__: stopping stream.")
             self.stop()
 
         if self.daq_device is not NULL:
@@ -303,7 +302,7 @@ cdef class Daq:
                     free(sd.outQueue.dequeue())
                 del sd.outQueue
                 sd.outQueue = NULL
-        fprintf(stderr, "End cleanup stream queues...\n")
+        logging.debug("End cleanup stream queues...\n")
 
         if sd.pyCallback:
             Py_DECREF(<object> sd.pyCallback)