diff --git a/CMakeLists.txt b/CMakeLists.txt
index e65dd4b..c447cdf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,8 @@
 cmake_minimum_required (VERSION 3.16) 
 
 project(LASP LANGUAGES C CXX)
+set(LASP_VERSION_MAJOR 1)
+set(LASP_VERSION_MINOR 0)
 
 # To allow linking to static libs from other directories
 cmake_policy(SET CMP0079 NEW)
@@ -32,7 +34,6 @@ set(PY_FULL_VERSION ${PROJECT_VERSION}${PY_VERSION_SUFFIX})
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 
 if(CMAKE_BUILD_TYPE STREQUAL Debug)
-    add_definitions(-DDEBUG=1)
     set(LASP_DEBUG True)
 else()
     set(LASP_DEBUG False)
diff --git a/pyproject.toml b/pyproject.toml
index 9dfcc2b..a59bd68 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,12 +5,14 @@ requires-python = ">=3.8"
 license = { "file" = "LICENSE" }
 authors = [{ "name" = "J.A. de Jong et al.", "email" = "info@ascee.nl" }]
 keywords = ["DSP", "DAQ", "Signal processing"]
+
 classifiers = [
     "Topic :: Scientific/Engineering",
     "Programming Language :: Python :: 3.8",
     "Operating System :: POSIX :: Linux",
     "Operating System :: Microsoft :: Windows",
 ]
+
 # urls = { "Documentation" = "https://" }
 dependencies = ["numpy", "scipy", "appdirs"]
 dynamic = ["version", "description"]
diff --git a/scripts/lasp_record b/scripts/lasp_record
index 9d2edef..e2395e1 100755
--- a/scripts/lasp_record
+++ b/scripts/lasp_record
@@ -26,12 +26,11 @@ FORMAT = "[%(filename)s:%(lineno)s - %(funcName)20s() ] %(message)s"
 logging.basicConfig(format=FORMAT, level=numeric_level)
 
 import multiprocessing
-from lasp.device import DaqConfigurations
-from lasp import AvType, StreamManager, Recording# configureLogging
+from lasp import StreamMgr, Recording, DaqConfiguration
 
 def main(args):
     try:
-        streammgr = StreamManager()
+        streammgr = StreamMgr.getInstance()
         configs = DaqConfigurations.loadAllConfigs()
 
         config_keys = [key for key in configs.keys()]
diff --git a/src/lasp/CMakeLists.txt b/src/lasp/CMakeLists.txt
index d9d22d5..be77a2f 100644
--- a/src/lasp/CMakeLists.txt
+++ b/src/lasp/CMakeLists.txt
@@ -1,4 +1,4 @@
-# cpp_src/CMakeLists.txt
+# src/lasp/CMakeLists.txt
 
 # Armadillo
 add_definitions(-DARMA_DONT_USE_WRAPPER)
diff --git a/src/lasp/__init__.py b/src/lasp/__init__.py
index 8a238b0..28151ff 100644
--- a/src/lasp/__init__.py
+++ b/src/lasp/__init__.py
@@ -3,18 +3,20 @@
 LASP: Library for Acoustic Signal Processing
 
 """
-__version__ = "1.0"
-
 from .lasp_common import (P_REF, FreqWeighting, TimeWeighting, getTime,
                           getFreq, Qty, SIQtys, Window, lasp_shelve,
                           this_lasp_shelve, W_REF, U_REF, I_REF, dBFS_REF,
                           AvType)
 from .lasp_cpp import *
+
+__version__ = lasp_cpp.__version__
+
 # from .lasp_imptube import *  # TwoMicImpedanceTube
 from .lasp_measurement import *  # Measurement, scaleBlockSens
 from .lasp_octavefilter import *
 # from .lasp_slm import *  # SLM, Dummy
 from .lasp_record import *  # RecordStatus, Recording
+from .lasp_daqconfigs import DaqConfigurations
 # from .lasp_siggen import *  # SignalType, NoiseType, SiggenMessage, SiggenData, Siggen
 # from .lasp_weighcal import *  # WeighCal
 # from .tools import *  # SmoothingType, smoothSpectralData, SmoothingWidth
diff --git a/src/lasp/device/CMakeLists.txt b/src/lasp/device/CMakeLists.txt
index 77ee57e..53d876b 100644
--- a/src/lasp/device/CMakeLists.txt
+++ b/src/lasp/device/CMakeLists.txt
@@ -1,4 +1,4 @@
-# cpp_src/src/device/CMakeLists.txt
+# src/lasp/device/CMakeLists.txt
 
 add_library(lasp_device_lib OBJECT 
     lasp_daq.cpp
diff --git a/src/lasp/device/lasp_daqconfig.cpp b/src/lasp/device/lasp_daqconfig.cpp
index 0807b78..1b1a831 100644
--- a/src/lasp/device/lasp_daqconfig.cpp
+++ b/src/lasp/device/lasp_daqconfig.cpp
@@ -1,7 +1,11 @@
+/* #define DEBUGTRACE_ENABLED */
+#include "debugtrace.hpp"
+
 #include "lasp_daqconfig.h"
 #include "lasp_deviceinfo.h"
 #include <algorithm>
 #include <cassert>
+#include <stdexcept>
 
 #define MAX_DEV_COUNT_PER_API 20
 
@@ -10,16 +14,15 @@ using std::vector;
 vector<DaqApi> DaqApi::getAvailableApis() {
 
   vector<DaqApi> apis;
-  apis.resize(6);
 #if LASP_HAS_ULDAQ == 1
-  apis.at(uldaqapi.apicode) = uldaqapi;
+  apis.push_back(uldaqapi);
 #endif
 #if LASP_HAS_RTAUDIO == 1
-  apis.at(rtaudioAlsaApi.apicode) = rtaudioAlsaApi;
-  apis.at(rtaudioPulseaudioApi.apicode) = rtaudioPulseaudioApi;
-  apis.at(rtaudioWasapiApi.apicode) = rtaudioWasapiApi;
-  apis.at(rtaudioDsApi.apicode) = rtaudioDsApi;
-  apis.at(rtaudioAsioApi.apicode) = rtaudioAsioApi;
+  apis.push_back(rtaudioAlsaApi);
+  apis.push_back(rtaudioPulseaudioApi);
+  apis.push_back(rtaudioWasapiApi);
+  apis.push_back(rtaudioDsApi);
+  apis.push_back(rtaudioAsioApi);
 #endif
   return apis;
 }
@@ -32,13 +35,13 @@ DaqConfiguration::DaqConfiguration(const DeviceInfo &device) {
   inchannel_config.resize(device.ninchannels);
   outchannel_config.resize(device.noutchannels);
   us i = 0;
-  for(auto& inch: inchannel_config) {
+  for (auto &inch : inchannel_config) {
     inch.name = "Unnamed input channel " + std::to_string(i);
     i++;
   }
 
   i = 0;
-  for(auto& outch: outchannel_config) {
+  for (auto &outch : outchannel_config) {
     outch.name = "Unnamed output channel " + std::to_string(i);
     i++;
   }
@@ -89,7 +92,8 @@ int DaqConfiguration::getLowestOutChannel() const {
 #include "toml++/toml.h"
 #include <sstream>
 
-toml::table daqChannelToTOML(const DaqChannel& ch) {
+toml::table daqChannelToTOML(const DaqChannel &ch) {
+  DEBUGTRACE_ENTER;
   toml::table tbl;
   tbl.emplace("enabled", ch.enabled);
   tbl.emplace("name", ch.name);
@@ -105,9 +109,12 @@ toml::table daqChannelToTOML(const DaqChannel& ch) {
 
 string DaqConfiguration::toTOML() const {
 
-  toml::table apitbl{{"name", api.apiname},
-    {"code", api.apicode},
-    {"subcode", api.api_specific_subcode}};
+  DEBUGTRACE_ENTER;
+  toml::table apitbl{
+    {"apiname", api.apiname}, // Api name
+    {"apicode", api.apicode}, // Api code
+    {"api_specific_subcode", api.api_specific_subcode} // Subcode
+  };
 
   toml::table tbl{{"daqapi", apitbl}};
 
@@ -118,13 +125,13 @@ string DaqConfiguration::toTOML() const {
   tbl.emplace("monitorOutput", monitorOutput);
 
   toml::array inchannel_config_tbl;
-  for(const auto& ch: inchannel_config) {
+  for (const auto &ch : inchannel_config) {
     inchannel_config_tbl.emplace_back(daqChannelToTOML(ch));
   }
   tbl.emplace("inchannel_config", inchannel_config_tbl);
 
   toml::array outchannel_config_tbl;
-  for(const auto& ch: outchannel_config) {
+  for (const auto &ch : outchannel_config) {
     outchannel_config_tbl.emplace_back(daqChannelToTOML(ch));
   }
   tbl.emplace("outchannel_config", outchannel_config_tbl);
@@ -135,3 +142,82 @@ string DaqConfiguration::toTOML() const {
 
   return str.str();
 }
+
+template <typename T,typename R> T getValue(R &tbl, const char* key) {
+  using std::runtime_error;
+
+  DEBUGTRACE_ENTER;
+
+  // Yeah, weird syntax quirck of C++
+  std::optional<T> val = tbl[key].template value<T>();
+  if (!val) {
+    throw runtime_error(string("Error while parsing Daq configuration. Table "
+          "does not contain key: ") +
+        key);
+  }
+  return val.value();
+}
+template<typename T> DaqChannel TOMLToDaqChannel(T& node) {
+  DEBUGTRACE_ENTER;
+  DaqChannel d;
+  toml::table& tbl = *node.as_table();
+  d.enabled = getValue<bool>(tbl, "enabled");
+  d.name = getValue<string>(tbl, "name");
+  d.sensitivity = getValue<double>(tbl, "sensitivity");
+  d.IEPEEnabled = getValue<bool>(tbl, "IEPEEnabled");
+  d.ACCouplingMode = getValue<bool>(tbl, "ACCouplingMode");
+  d.rangeIndex = getValue<bool>(tbl, "rangeIndex");
+  d.qty = static_cast<DaqChannel::Qty>(getValue<int64_t>(tbl, "qty"));
+  d.digitalHighPassCutOn = getValue<double>(tbl, "digitalHighpassCutOn");
+
+  return d;
+}
+
+DaqConfiguration DaqConfiguration::fromTOML(const std::string &tomlstr) {
+
+  DEBUGTRACE_ENTER;
+
+  using std::runtime_error;
+
+  try {
+    toml::table tbl = toml::parse(tomlstr);
+    DaqConfiguration config;
+
+    auto daqapi = tbl["daqapi"];
+    DaqApi api;
+    api.apicode = getValue<int64_t>(daqapi, "apicode");
+    api.api_specific_subcode = getValue<int64_t>(daqapi, "api_specific_subcode");
+    api.apiname = getValue<string>(daqapi, "apiname");
+    config.api = api;
+
+    config.device_name = getValue<string>(tbl, "device_name");
+    config.sampleRateIndex = getValue<int64_t>(tbl, "sampleRateIndex");
+    config.dataTypeIndex = getValue<int>(tbl, "dataTypeIndex");
+    config.framesPerBlockIndex = getValue<int64_t>(tbl, "framesPerBlockIndex");
+    config.monitorOutput = getValue<bool>(tbl, "monitorOutput");
+
+    if(toml::array* in_arr = tbl["inchannel_config"].as_array()) {
+      for(auto& el: *in_arr) {
+        config.inchannel_config.push_back(TOMLToDaqChannel(el));
+      }
+
+    } else {
+      throw runtime_error("inchannel_config is not an array");
+    }
+
+    if(toml::array* out_arr = tbl["outchannel_config"].as_array()) {
+      for(auto& el: *out_arr) {
+        config.outchannel_config.push_back(TOMLToDaqChannel(el));
+      }
+    } else {
+      throw runtime_error("outchannel_config is not an array");
+    }
+
+
+    return config;
+
+  } catch (const toml::parse_error &e) {
+    throw std::runtime_error(string("Error parsing TOML DaqConfiguration: ") +
+        e.what());
+  }
+}
diff --git a/src/lasp/device/lasp_daqdata.h b/src/lasp/device/lasp_daqdata.h
index 317db52..f77eaf3 100644
--- a/src/lasp/device/lasp_daqdata.h
+++ b/src/lasp/device/lasp_daqdata.h
@@ -109,7 +109,7 @@ public:
    * @param frame Frame number
    * @param channel Channel number
    *
-   * @return 
+   * @return
    */
   T &operator()(const us frame = 0, const us channel = 0) {
     return reinterpret_cast<T &>(*raw_ptr(frame, channel));
diff --git a/src/lasp/lasp_atomic.py b/src/lasp/lasp_atomic.py
index b95ad30..d9f35b9 100644
--- a/src/lasp/lasp_atomic.py
+++ b/src/lasp/lasp_atomic.py
@@ -22,16 +22,27 @@ from threading import Lock
 
 
 class Atomic:
+    """
+    Implementation of atomic operations on integers and booleans.
+
+    """
     def __init__(self, val):
+        self.checkType(val)
         self._val = val
         self._lock = Lock()
 
+    def checkType(self, val):
+        if not (type(val) == bool | type(val) == int):
+            raise RuntimeError("Invalid type for Atomic")
+
     def __iadd__(self, toadd):
+        self.checkType(toadd)
         with self._lock:
             self._val += toadd
         return self
 
     def __isub__(self, toadd):
+        self.checkType(toadd)
         with self._lock:
             self._val -= toadd
         return self
@@ -41,6 +52,7 @@ class Atomic:
             return self._val
 
     def __ilshift__(self, other):
+        self.checkType(other)
         with self._lock:
             self._val = other
         return self
diff --git a/src/lasp/lasp_config.h.in b/src/lasp/lasp_config.h.in
index 14b6039..c472112 100644
--- a/src/lasp/lasp_config.h.in
+++ b/src/lasp/lasp_config.h.in
@@ -9,6 +9,9 @@
 #ifndef LASP_CONFIG_H
 #define LASP_CONFIG_H
 
+const int LASP_VERSION_MAJOR = @LASP_VERSION_MAJOR@;
+const int LASP_VERSION_MINOR = @LASP_VERSION_MINOR@;
+
 /* Debug flag */
 #cmakedefine01 LASP_DEBUG
 
@@ -32,6 +35,7 @@
 #cmakedefine01 LASP_DOUBLE_PRECISION
 #cmakedefine01 LASP_USE_BLAS
 
+
 /* Single / double precision */
 #ifdef LASP_DOUBLE_PRECISION
 #define LASP_FLOAT_SIZE 64
diff --git a/src/lasp/lasp_cpp.cpp b/src/lasp/lasp_cpp.cpp
index 3f16f99..03df0b1 100644
--- a/src/lasp/lasp_cpp.cpp
+++ b/src/lasp/lasp_cpp.cpp
@@ -1,13 +1,13 @@
+#include "lasp_config.h"
 #include <pybind11/pybind11.h>
 namespace py = pybind11;
 
-void init_dsp(py::module& m);
-void init_deviceinfo(py::module& m);
-void init_daqconfiguration(py::module& m);
-void init_daq(py::module& m);
-void init_streammgr(py::module& m);
-void init_datahandler(py::module& m);
-
+void init_dsp(py::module &m);
+void init_deviceinfo(py::module &m);
+void init_daqconfiguration(py::module &m);
+void init_daq(py::module &m);
+void init_streammgr(py::module &m);
+void init_datahandler(py::module &m);
 
 PYBIND11_MODULE(lasp_cpp, m) {
 
@@ -18,4 +18,9 @@ PYBIND11_MODULE(lasp_cpp, m) {
   init_streammgr(m);
   init_datahandler(m);
 
+  m.attr("__version__") = std::to_string(LASP_VERSION_MAJOR) + "." +
+                          std::to_string(LASP_VERSION_MINOR);
+
+  m.attr("LASP_VERSION_MAJOR") = LASP_VERSION_MAJOR;
+  m.attr("LASP_VERSION_MINOR") = LASP_VERSION_MINOR;
 }
diff --git a/src/lasp/lasp_daqconfigs.py b/src/lasp/lasp_daqconfigs.py
new file mode 100644
index 0000000..adae5d7
--- /dev/null
+++ b/src/lasp/lasp_daqconfigs.py
@@ -0,0 +1,121 @@
+# -*- coding: utf-8 -*-
+from .lasp_cpp import DaqConfiguration, LASP_VERSION_MAJOR
+
+"""!
+Author: J.A. de Jong - ASCEE
+
+Description:
+
+Data Acquistiion (DAQ) device descriptors, and the DAQ devices themselves
+
+"""
+__all__ = ["DaqConfigurations"]
+import json
+
+from .lasp_common import Qty, SIQtys, lasp_shelve
+from .lasp_cpp import DaqChannel, DaqConfiguration
+
+
+class DaqConfigurations:
+    """
+    DaqConfigurations stores a set containing an input configuration and an
+    output configuration.
+    """
+
+    def __init__(
+        self,
+        duplex_mode: bool,
+        input_config: DaqConfiguration,
+        output_config: DaqConfiguration,
+    ):
+        """
+        Initialize set of DaqConfigurations. 
+
+        Args:
+            duplex_mode: If true, the input configuration is used for output as
+            well. This makes only sense when the device is capable of having
+            simultaneous input / output.
+            input_config: The configuration settings for the input
+            output_config: The configuration settoutgs for the output
+        """
+
+        self.input_config = input_config
+        self.output_config = output_config
+        self.duplex_mode = duplex_mode
+
+    @staticmethod
+    def getNames():
+        """
+        Get a list of all names of DaqConfigurations sets.
+
+        Returns:
+            list of names
+
+        """
+        with lasp_shelve() as sh:
+            configs_ser = sh.load(f"daqconfigs_v{LASP_VERSION_MAJOR}", {})
+        return list(configs_ser.keys())
+
+    @staticmethod
+    def loadAll():
+        """
+        Returns a dictionary of all configurations presets. The dictionary keys
+        are the names of the configurations
+
+        Returns:
+            all configurations, as a dictionary
+
+        """
+        with lasp_shelve() as sh:
+            configs_ser = sh.load(f"daqconfigs_v{LASP_VERSION_MAJOR}", {})
+        configs = {}
+        for name, val in configs_ser.items():
+            configs[name] = DaqConfigurations.load(name)
+        return configs
+
+    @staticmethod
+    def load(name: str):
+        """
+        Load a single configuration preset, containing input config and output config
+
+        Args:
+            name: The name of the configuration to load.
+
+        """
+
+        with lasp_shelve() as sh:
+            configs_str = sh.load(f"daqconfigs_v{LASP_VERSION_MAJOR}", {})
+            config_str = configs_str[name]
+
+            duplex_mode = config_str[0]
+            input_config = DaqConfiguration.fromTOML(config_str[1])
+            output_config = DaqConfiguration.fromTOML(config_str[2])
+            return DaqConfigurations(duplex_mode, input_config, output_config)
+
+    def save(self, name: str):
+        """
+        Save the current set of configurations to the shelve store.
+
+        Args:
+            name: The name of the configuration set.
+        """
+        with lasp_shelve() as sh:
+
+            # Convert to TOML
+            input_str = self.input_config.toTOML()
+            output_str = self.output_config.toTOML()
+
+            configs_str = sh.load(f"daqconfigs_v{LASP_VERSION_MAJOR}", {})
+            configs_str[name] = [self.duplex_mode, input_str, output_str]
+            sh.store(f"daqconfigs_v{LASP_VERSION_MAJOR}", configs_str)
+
+    @staticmethod
+    def delete(name: str):
+        """
+        Delete a DaqConfigurations set from the store.
+
+        """
+        with lasp_shelve() as sh:
+            configs = sh.load("daqconfigs", {})
+            del configs[name]
+            sh.store(f"daqconfigs_v{LASP_VERSION_MAJOR}", configs)
diff --git a/src/lasp/lasp_octavefilter.py b/src/lasp/lasp_octavefilter.py
index b2f3a6b..56f1e89 100644
--- a/src/lasp/lasp_octavefilter.py
+++ b/src/lasp/lasp_octavefilter.py
@@ -12,8 +12,6 @@ __all__ = ['FirOctaveFilterBank', 'FirThirdOctaveFilterBank',
 
 from .filter.filterbank_design import (OctaveBankDesigner,
                                        ThirdOctaveBankDesigner)
-from .wrappers import (Decimator, FilterBank as pyxFilterBank,
-                       SosFilterBank as pyxSosFilterBank)
 import numpy as np
 
 
diff --git a/src/lasp/lasp_record.py b/src/lasp/lasp_record.py
index 972afec..db4abbe 100644
--- a/src/lasp/lasp_record.py
+++ b/src/lasp/lasp_record.py
@@ -9,6 +9,7 @@ import os
 import time
 import h5py
 from .lasp_cpp import InDataHandler, StreamMgr
+from .lasp_atomic import Atomic
 
 
 @dataclasses.dataclass
@@ -65,7 +66,7 @@ class Recording:
         self.curT_rounded_to_seconds = 0
 
         # Counter of the number of blocks
-        self.ablockno = 0
+        self.ablockno = Atomic(0)
 
         self.progressCallback = progressCallback
 
@@ -87,14 +88,14 @@ class Recording:
 
         logging.debug('Starting record....')
 
-        self.stop = False
+        self.stop = Atomic(False)
 
         self.indh = InDataHandler(streammgr, self.inCallback)
 
         if wait:
             logging.debug('Stop recording with CTRL-C')
             try:
-                while not self.stop:
+                while not self.stop():
                     time.sleep(0.01)
             except KeyboardInterrupt:
                 logging.debug("Keyboard interrupt on record")
@@ -176,8 +177,10 @@ class Recording:
         remove the queue from the stream, etc.
 
         """
+        assert self.stop() == True
         logging.debug('Recording::finish()')
         smgr = self.smgr
+
         self.indh = None
 
         # TODO: Fix when video
@@ -185,11 +188,6 @@ class Recording:
         #     smgr.removeCallback(self.vCallback, AvType.video_input)
         #     self.f['video_frame_positions'] = self.video_frame_positions
 
-        try:
-            smgr.removeInQueueListener(self.inq)
-        except Exception as e:
-            logging.error(f'Could not remove queue from smgr: {e}')
-
         try:
             # Close the recording file
             self.f.close()
@@ -215,7 +213,7 @@ class Recording:
         """
         # logging.debug('Recording::__addTimeData()')
 
-        if self.stop:
+        if self.stop():
             # Stop flag is raised. We stop recording here.
             return
 
@@ -254,7 +252,7 @@ class Recording:
             if self.progressCallback is not None:
                 recstatus.done = True
                 self.progressCallback(recstatus)
-            self.stop = True
+            self.stop << True
             return
 
         # Add the data to the file, and resize the audio data blocks
diff --git a/src/lasp/lasp_reverb.py b/src/lasp/lasp_reverb.py
index dbc829d..9ac5831 100644
--- a/src/lasp/lasp_reverb.py
+++ b/src/lasp/lasp_reverb.py
@@ -58,14 +58,14 @@ class ReverbTime:
         # Solve the least-squares problem, by creating a matrix of
         A = np.hstack([x, np.ones(x.shape)])
 
-        print(A.shape)
-        print(points.shape)
+        # print(A.shape)
+        # print(points.shape)
 
         # derivative is dB/s of increase/decrease
         sol, residuals, rank, s = np.linalg.lstsq(A, points)
 
 
-        print(f'sol: {sol}')
+        # print(f'sol: {sol}')
         # Derivative of the decay in dB/s
         derivative = sol[0][0]
 
@@ -79,5 +79,5 @@ class ReverbTime:
                 'const': const,
                 'derivative': derivative,
                 'T60': T60}
-        print(res)
+        # print(res)
         return res
diff --git a/src/lasp/pybind11/lasp_daqconfig.cpp b/src/lasp/pybind11/lasp_daqconfig.cpp
index add2114..031ae06 100644
--- a/src/lasp/pybind11/lasp_daqconfig.cpp
+++ b/src/lasp/pybind11/lasp_daqconfig.cpp
@@ -70,6 +70,7 @@ void init_daqconfiguration(py::module &m) {
 
   daqconfig.def("match", &DaqConfiguration::match);
 
+  daqconfig.def_static("fromTOML", &DaqConfiguration::fromTOML);
   daqconfig.def("toTOML", &DaqConfiguration::toTOML);
   daqconfig.def_readwrite("inchannel_config",
                           &DaqConfiguration::inchannel_config);
diff --git a/src/lasp/pybind11/lasp_pyindatahandler.cpp b/src/lasp/pybind11/lasp_pyindatahandler.cpp
index 65f31a5..b47ed26 100644
--- a/src/lasp/pybind11/lasp_pyindatahandler.cpp
+++ b/src/lasp/pybind11/lasp_pyindatahandler.cpp
@@ -22,7 +22,7 @@ namespace py = pybind11;
 
 /**
  * @brief Generate a Numpy array from daqdata, does *NOT* create a copy of the
- * data!.
+ * data!. Instead, it shares the data from the DaqData container.
  *
  * @tparam T The type of the stored sample
  * @param d The daqdata to convert
@@ -47,17 +47,23 @@ template <typename T> py::array_t<T> getPyArray(DaqData &d) {
    */
 
   return py::array_t<T>(
-      py::array::ShapeContainer({d.nframes, d.nchannels}),
-      py::array::StridesContainer(
-          {sizeof(T),
-           sizeof(T) * d.nframes}), /* Strides (in bytes) for each index */
-      (T *)d.raw_ptr(),             /* Pointer to buffer */
-      dummyDataOwner);
+      py::array::ShapeContainer({d.nframes, d.nchannels}), // Shape
+                                                           //
+      py::array::StridesContainer(                         // Strides
+        {sizeof(T),
+        sizeof(T) * d.nframes}), // Strides (in bytes) for each index
+
+      (T *)d.raw_ptr(), // Pointer to buffer
+
+      dummyDataOwner // As stated above, now Numpy does not take ownership of
+                     // the data pointer.
+      );
 }
 
 /**
  * @brief Wraps the InDataHandler such that it calls a Python callback with a
- * buffer of sample data.
+ * buffer of sample data. The Python callback is called from a different
+ * thread, using a Numpy argument as
  */
 class PyIndataHandler : public InDataHandler {
   /**
@@ -68,28 +74,35 @@ class PyIndataHandler : public InDataHandler {
    * @brief The thread that is handling callbacks from the queue
    */
   std::thread pythread;
-  boost::lockfree::spsc_queue<DaqData> dataqueue{RINGBUFFER_SIZE};
+  /**
+   * @brief The queue used to push elements to the handling thread.
+   */
+  boost::lockfree::spsc_queue<DaqData,
+    boost::lockfree::capacity<RINGBUFFER_SIZE>>
+      dataqueue;
   std::atomic<bool> stopThread{false};
 
-public:
+  public:
   ~PyIndataHandler() {
     DEBUGTRACE_ENTER;
     stop();
     stopThread = true;
-    pythread.join();
+    if(pythread.joinable()) {
+      pythread.join();
+    }
   }
   PyIndataHandler(StreamMgr &mgr, py::function cb)
-      : InDataHandler(mgr), cb(cb),
-        pythread(&PyIndataHandler::threadfcn, this) {
+    : InDataHandler(mgr), cb(cb),
+    pythread(&PyIndataHandler::threadfcn, this) {
 
-    DEBUGTRACE_ENTER;
-    /// TODO: Note that if start() throws an exception, which means that the
-    /// destructor of PyIndataHandler is not called and the thread destructor
-    /// calls terminate(). It is a kind of rude way to crash, but it is also
-    /// *very* unlikely to happen, as start() does only add a reference to this
-    /// handler to a list in the stream mgr.
-    start();
-  }
+      DEBUGTRACE_ENTER;
+      /// TODO: Note that if start() throws an exception, which means that the
+      /// destructor of PyIndataHandler is not called and the thread destructor
+      /// calls terminate(). It is a kind of rude way to crash, but it is also
+      /// *very* unlikely to happen, as start() does only add a reference to this
+      /// handler to a list in the stream mgr.
+      start();
+    }
 
   /**
    * @brief Reads from the
@@ -110,23 +123,23 @@ public:
         try {
           py::array binfo;
           switch (d.dtype) {
-          case (DataType::dtype_int8):
-            binfo = getPyArray<uint8_t>(d);
-            break;
-          case (DataType::dtype_int16):
-            binfo = getPyArray<uint16_t>(d);
-            break;
-          case (DataType::dtype_int32):
-            binfo = getPyArray<uint32_t>(d);
-            break;
-          case (DataType::dtype_fl32):
-            binfo = getPyArray<float>(d);
-            break;
-          case (DataType::dtype_fl64):
-            binfo = getPyArray<double>(d);
-            break;
-          default:
-            throw std::runtime_error("BUG");
+            case (DataType::dtype_int8):
+              binfo = getPyArray<uint8_t>(d);
+              break;
+            case (DataType::dtype_int16):
+              binfo = getPyArray<uint16_t>(d);
+              break;
+            case (DataType::dtype_int32):
+              binfo = getPyArray<uint32_t>(d);
+              break;
+            case (DataType::dtype_fl32):
+              binfo = getPyArray<float>(d);
+              break;
+            case (DataType::dtype_fl64):
+              binfo = getPyArray<double>(d);
+              break;
+            default:
+              throw std::runtime_error("BUG");
           } // End of switch
 
           py::object bool_val = cb(binfo);
@@ -142,7 +155,7 @@ public:
         } catch (py::cast_error &e) {
           cerr << e.what() << endl;
           cerr << "ERROR: Python callback does not return boolean value."
-               << endl;
+            << endl;
           stopThread = true;
         }
       }
@@ -168,8 +181,8 @@ public:
       if (!dataqueue.push(daqdata)) {
         stopThread = true;
         cerr << "Pushing DaqData object failed. Probably the ringbuffer is "
-                "full. Try reducing the load"
-             << endl;
+          "full. Try reducing the load"
+          << endl;
       }
     }
     return true;
diff --git a/third_party/tomlplusplus b/third_party/tomlplusplus
index 6a47ce7..b1ecdf0 160000
--- a/third_party/tomlplusplus
+++ b/third_party/tomlplusplus
@@ -1 +1 @@
-Subproject commit 6a47ce703d2825dd1da0776c946f13c293e096a2
+Subproject commit b1ecdf0ed86faeeaebe13d0db16ad04c20519527