reduce complexity and change default type to str

moved pms.adsb.surface_velocity under typecode 5-8

.gitignore

@@ -5,6 +5,9 @@ __pycache__/
 *.py[cod]
 .pytest_cache/
 
+#cython
+.c
+
 # C extensions
 *.so
 
@@ -58,3 +61,9 @@ target/
 
 # PyCharm
 .idea/
+
+# Environments
+.env
+.venv
+env/
+venv/

Makefile

@@ -0,0 +1,19 @@
+install:
+	pip install . --upgrade
+
+uninstall:
+	pip uninstall pyModeS -y
+
+ext:
+	python setup.py build_ext --inplace
+
+test:
+	python -m pytest
+
+clean:
+	find pyModeS/decoder -type f -name '*.c' -delete
+	find pyModeS/decoder -type f -name '*.so' -delete
+	find . | grep -E "(__pycache__|\.pyc|\.pyo$$)" | xargs rm -rf
+	rm -rf *.egg-info
+	rm -rf .pytest_cache
+	rm -rf build/*

README.rst

@@ -1,9 +1,26 @@
 The Python ADS-B/Mode-S Decoder
-==========================================
+===============================
 
-Python library for ADS-B/Mode-S message decoding. Supported Downlink Formats (DF) are:
+If you find this project useful for your research, please considering cite this tool as::
 
-**DF17 / DF18: Automatic Dependent Surveillance - Broadcast (ADS-B)**
+  @article{sun2019pymodes,
+      author={J. {Sun} and H. {V\^u} and J. {Ellerbroek} and J. M. {Hoekstra}},
+      journal={IEEE Transactions on Intelligent Transportation Systems},
+      title={pyModeS: Decoding Mode-S Surveillance Data for Open Air Transportation Research},
+      year={2019},
+      doi={10.1109/TITS.2019.2914770},
+      ISSN={1524-9050},
+  }
+
+
+
+Introduction
+---------------------
+PyModeS is a Python library designed to decode Mode-S (including ADS-B) message. It can be imported to your python project or be used as a standalone tool to view and save live traffic data.
+
+Messages with following Downlink Formats (DF) are supported:
+
+**DF17 / DF18: Automatic Dependent Surveillance-Broadcast (ADS-B)**
 
 - TC=1-4  / BDS 0,8: Aircraft identification and category
 - TC=5-8  / BDS 0,6: Surface position
@@ -19,12 +36,11 @@ Python library for ADS-B/Mode-S message decoding. Supported Downlink Formats (DF
 - BDS 1,0: Data link capability report
 - BDS 1,7: Common usage GICB capability report
 - BDS 2,0: Aircraft identification
-- BDS 2,1: Aircraft and airline registration markings
 - BDS 3,0: ACAS active resolution advisory
 - BDS 4,0: Selected vertical intention
-- BDS 4,4: Meteorological routine air report
+- BDS 4,4: Meteorological routine air report (experimental)
+- BDS 4,5: Meteorological hazard report (experimental)
 - BDS 5,0: Track and turn report
-- BDS 5,3: Air-referenced state vector
 - BDS 6,0: Heading and speed report
 
 
@@ -32,76 +48,79 @@ Python library for ADS-B/Mode-S message decoding. Supported Downlink Formats (DF
 
 **DF5 / DF21: Identity code (squawk code)**
 
-Detailed manual on Mode-S decoding is published by the author, at:
-https://mode-s.org/decode
 
-
-New features in v2.0
----------------------
-- New structure of the libraries
-- ADS-B and Comm-B data streaming
-- Active aircraft viewing (terminal curses)
-- Improved BDS identification
-- Optimizing decoding speed
-
-
-Source code
+Resources
 -----------
-Checkout and contribute to this open-source project at:
+Check out and contribute to this open-source project at:
 https://github.com/junzis/pyModeS
 
-API documentation at:
+Detailed manual on Mode-S decoding is published at:
+https://mode-s.org/decode.
+
+The API documentation of pyModeS is at:
 http://pymodes.readthedocs.io
-[To be updated]
+
 
 
 Install
 -------
 
-To install latest version from the GitHub:
+Installation examples::
 
-::
+  # stable version
+  pip install pyModeS
 
+  # development version
   pip install git+https://github.com/junzis/pyModeS
 
 
-To install the stable version (2.0) from pip:
-
-::
-
-  pip install pyModeS
+Dependencies ``numpy``, ``pyzmq`` and ``pyrtlsdr`` are installed automatically during previous installations processes.
 
 
-
-Live view traffic (modeslive)
+View live traffic (modeslive)
 ----------------------------------------------------
-Supports **Mode-S Beast** and **AVR** raw stream
 
-::
+General usage::
 
-  modeslive --server [server_address] --port [tcp_port] --rawtype [beast,avr,skysense] --latlon [lat] [lon]  --dumpto [folder]
+  $ modeslive [-h] --source SOURCE [--connect SERVER PORT DATAYPE]
+              [--latlon LAT LON] [--show-uncertainty] [--dumpto DUMPTO]
 
-  Arguments:
-    -h, --help           show this help message and exit
-    --server SERVER      server address or IP
-    --port PORT          raw data port
-    --rawtype RAWTYPE    beast, avr or skysense
-    --latlon LAT LON     receiver position
-    --show-uncertainty   display uncertaint values, default off
-    --dumpto             folder to dump decoded output
+  arguments:
+   -h, --help            show this help message and exit
+   --source SOURCE       Choose data source, "rtlsdr" or "net"
+   --connect SERVER PORT DATATYPE
+                         Define server, port and data type. Supported data
+                         types are: ['raw', 'beast', 'skysense']
+   --latlon LAT LON      Receiver latitude and longitude, needed for the surface
+                         position, default none
+   --show-uncertainty    Display uncertainty values, default off
+   --dumpto DUMPTO       Folder to dump decoded output, default none
 
 
-If you have a RTL-SDR receiver or Mode-S Beast, use modesmixer2 (http://xdeco.org/?page_id=48) to create raw beast TCP stream:
+Live with RTL-SDR
+*******************
+
+If you have an RTL-SDR receiver plugged to the computer, you can connect it with ``rtlsdr`` source switch, shown as follows::
+
+  $ modeslive --source rtlsdr
+
+
+Live with network data
+***************************
+
+If you want to connect to a TCP server that broadcast raw data. use can use ``net`` source switch, for example::
+
+  $ modeslive --source net --connect localhost 30002 raw
+  $ modeslive --source net --connect 127.0.0.1 30005 beast
 
-::
 
-  $ modesmixer2 --inSeriel port[:speed[:flow_control]] --outServer beast:[tcp_port]
 
 Example screenshot:
 
 .. image:: https://github.com/junzis/pyModeS/raw/master/doc/modeslive-screenshot.png
    :width: 700px
 
+
 Use the library
 ---------------
 
@@ -140,6 +159,7 @@ Core functions for ADS-B decoding
   pms.adsb.position(msg_even, msg_odd, t_even, t_odd, lat_ref=None, lon_ref=None)
   pms.adsb.airborne_position(msg_even, msg_odd, t_even, t_odd)
   pms.adsb.surface_position(msg_even, msg_odd, t_even, t_odd, lat_ref, lon_ref)
+  pms.adsb.surface_velocity(msg)
 
   pms.adsb.position_with_ref(msg, lat_ref, lon_ref)
   pms.adsb.airborne_position_with_ref(msg, lat_ref, lon_ref)
@@ -150,15 +170,10 @@ Core functions for ADS-B decoding
   # Typecode: 19
   pms.adsb.velocity(msg)          # Handles both surface & airborne messages
   pms.adsb.speed_heading(msg)     # Handles both surface & airborne messages
-  pms.adsb.surface_velocity(msg)
   pms.adsb.airborne_velocity(msg)
 
 
-Note: When you have a fix position of the aircraft, it is convenient to
-use `position_with_ref()` method to decode with only one position message
-(either odd or even). This works with both airborne and surface position
-messages. But the reference position shall be with in 180NM (airborne)
-or 45NM (surface) of the true position.
+Note: When you have a fix position of the aircraft, it is convenient to use `position_with_ref()` method to decode with only one position message (either odd or even). This works with both airborne and surface position messages. But the reference position shall be within 180NM (airborne) or 45NM (surface) of the true position.
 
 
 Decode altitude replies in DF4 / DF20
@@ -214,19 +229,19 @@ Mode-S Enhanced Surveillance (EHS)
 
 .. code:: python
 
-  # For BDS register 4,0
-  pms.commb.alt40mcp(msg)   # MCP/FCU selected altitude (ft)
-  pms.commb.alt40fms(msg)   # FMS selected altitude (ft)
+  # BDS 4,0
+  pms.commb.selalt40mcp(msg)   # MCP/FCU selected altitude (ft)
+  pms.commb.selalt40fms(msg)   # FMS selected altitude (ft)
   pms.commb.p40baro(msg)    # Barometric pressure (mb)
 
-  # For BDS register 5,0
+  # BDS 5,0
   pms.commb.roll50(msg)     # Roll angle (deg)
   pms.commb.trk50(msg)      # True track angle (deg)
   pms.commb.gs50(msg)       # Ground speed (kt)
   pms.commb.rtrk50(msg)     # Track angle rate (deg/sec)
   pms.commb.tas50(msg)      # True airspeed (kt)
 
-  # For BDS register 6,0
+  # BDS 6,0
   pms.commb.hdg60(msg)      # Magnetic heading (deg)
   pms.commb.ias60(msg)      # Indicated airspeed (kt)
   pms.commb.mach60(msg)     # Mach number (-)
@@ -235,21 +250,90 @@ Mode-S Enhanced Surveillance (EHS)
 
 
 Meteorological routine air report (MRAR) [Experimental]
+********************************************************
+
+.. code:: python
+
+  # BDS 4,4
+  pms.commb.wind44(msg)     # Wind speed (kt) and direction (true) (deg)
+  pms.commb.temp44(msg)     # Static air temperature (C)
+  pms.commb.p44(msg)        # Average static pressure (hPa)
+  pms.commb.hum44(msg)      # Humidity (%)
+
+
+Meteorological hazard air report (MHR) [Experimental]
 *******************************************************
 
 .. code:: python
 
-  # For BDS register 4,4
-  pms.commb.wind44(msg, rev=False)  # Wind speed (kt) and direction (true) (deg)
-  pms.commb.temp44(msg, rev=False)  # Static air temperature (C)
-  pms.commb.p44(msg, rev=False)     # Average static pressure (hPa)
-  pms.commb.hum44(msg, rev=False)   # Humidity (%)
+  # BDS 4,5
+  pms.commb.turb45(msg)     # Turbulence level (0-3)
+  pms.commb.ws45(msg)       # Wind shear level (0-3)
+  pms.commb.mb45(msg)       # Microburst level (0-3)
+  pms.commb.ic45(msg)       # Icing level (0-3)
+  pms.commb.wv45(msg)       # Wake vortex level (0-3)
+  pms.commb.temp45(msg)     # Static air temperature (C)
+  pms.commb.p45(msg)        # Average static pressure (hPa)
+  pms.commb.rh45(msg)       # Radio height (ft)
 
 
-Developement
-------------
-To perform unit tests. First install ``tox`` through pip, Then, run the following commands:
 
-.. code:: bash
+Customize the streaming module
+******************************
+The TCP client module from pyModeS can be re-used to stream and process Mode-S data as you like. You need to re-implement the ``handle_messages()`` function from the ``TcpClient`` class to write your own logic to handle the messages.
 
-  $ tox
+Here is an example:
+
+.. code:: python
+
+  import pyModeS as pms
+  from pyModeS.extra.tcpclient import TcpClient
+
+  # define your custom class by extending the TcpClient
+  #   - implement your handle_messages() methods
+  class ADSBClient(TcpClient):
+      def __init__(self, host, port, rawtype):
+          super(ADSBClient, self).__init__(host, port, rawtype)
+
+      def handle_messages(self, messages):
+          for msg, ts in messages:
+              if len(msg) != 28:  # wrong data length
+                  continue
+
+              df = pms.df(msg)
+
+              if df != 17:  # not ADSB
+                  continue
+
+              if pms.crc(msg) !=0:  # CRC fail
+                  continue
+
+              icao = pms.adsb.icao(msg)
+              tc = pms.adsb.typecode(msg)
+
+              # TODO: write you magic code here
+              print(ts, icao, tc, msg)
+
+  # run new client, change the host, port, and rawtype if needed
+  client = ADSBClient(host='127.0.0.1', port=30005, rawtype='beast')
+  client.run()
+
+
+Unit test
+---------
+To perform unit tests, ``pytest`` must be install first.
+
+Build Cython extensions
+::
+
+  $ make ext
+
+Run unit tests
+::
+
+  $ make test
+
+Clean build files
+::
+
+  $ make clean

doc/.gitignore

@@ -1,3 +0,0 @@
-_build
-_static
-_templates

doc/Makefile

@@ -1,225 +1,21 @@
-# Makefile for Sphinx documentation
+# Minimal makefile for Sphinx documentation
 #
 
 # You can set these variables from the command line.
 SPHINXOPTS    =
 SPHINXBUILD   = sphinx-build
-PAPER         =
-BUILDDIR      = _build
+SOURCEDIR     = source
+BUILDDIR      = build
 
-# Internal variables.
-PAPEROPT_a4     = -D latex_paper_size=a4
-PAPEROPT_letter = -D latex_paper_size=letter
-ALLSPHINXOPTS   = -d $(BUILDDIR)/doctrees $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
-# the i18n builder cannot share the environment and doctrees with the others
-I18NSPHINXOPTS  = $(PAPEROPT_$(PAPER)) $(SPHINXOPTS) .
-
-.PHONY: help
+# Put it first so that "make" without argument is like "make help".
 help:
-	@echo "Please use \`make <target>' where <target> is one of"
-	@echo "  html       to make standalone HTML files"
-	@echo "  dirhtml    to make HTML files named index.html in directories"
-	@echo "  singlehtml to make a single large HTML file"
-	@echo "  pickle     to make pickle files"
-	@echo "  json       to make JSON files"
-	@echo "  htmlhelp   to make HTML files and a HTML help project"
-	@echo "  qthelp     to make HTML files and a qthelp project"
-	@echo "  applehelp  to make an Apple Help Book"
-	@echo "  devhelp    to make HTML files and a Devhelp project"
-	@echo "  epub       to make an epub"
-	@echo "  epub3      to make an epub3"
-	@echo "  latex      to make LaTeX files, you can set PAPER=a4 or PAPER=letter"
-	@echo "  latexpdf   to make LaTeX files and run them through pdflatex"
-	@echo "  latexpdfja to make LaTeX files and run them through platex/dvipdfmx"
-	@echo "  text       to make text files"
-	@echo "  man        to make manual pages"
-	@echo "  texinfo    to make Texinfo files"
-	@echo "  info       to make Texinfo files and run them through makeinfo"
-	@echo "  gettext    to make PO message catalogs"
-	@echo "  changes    to make an overview of all changed/added/deprecated items"
-	@echo "  xml        to make Docutils-native XML files"
-	@echo "  pseudoxml  to make pseudoxml-XML files for display purposes"
-	@echo "  linkcheck  to check all external links for integrity"
-	@echo "  doctest    to run all doctests embedded in the documentation (if enabled)"
-	@echo "  coverage   to run coverage check of the documentation (if enabled)"
-	@echo "  dummy      to check syntax errors of document sources"
+	@$(SPHINXBUILD) -M help "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)
 
-.PHONY: clean
-clean:
-	rm -rf $(BUILDDIR)/*
+.PHONY: help Makefile
 
-.PHONY: html
-html:
-	$(SPHINXBUILD) -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html
-	@echo
-	@echo "Build finished. The HTML pages are in $(BUILDDIR)/html."
-
-.PHONY: dirhtml
-dirhtml:
-	$(SPHINXBUILD) -b dirhtml $(ALLSPHINXOPTS) $(BUILDDIR)/dirhtml
-	@echo
-	@echo "Build finished. The HTML pages are in $(BUILDDIR)/dirhtml."
-
-.PHONY: singlehtml
-singlehtml:
-	$(SPHINXBUILD) -b singlehtml $(ALLSPHINXOPTS) $(BUILDDIR)/singlehtml
-	@echo
-	@echo "Build finished. The HTML page is in $(BUILDDIR)/singlehtml."
-
-.PHONY: pickle
-pickle:
-	$(SPHINXBUILD) -b pickle $(ALLSPHINXOPTS) $(BUILDDIR)/pickle
-	@echo
-	@echo "Build finished; now you can process the pickle files."
-
-.PHONY: json
-json:
-	$(SPHINXBUILD) -b json $(ALLSPHINXOPTS) $(BUILDDIR)/json
-	@echo
-	@echo "Build finished; now you can process the JSON files."
-
-.PHONY: htmlhelp
-htmlhelp:
-	$(SPHINXBUILD) -b htmlhelp $(ALLSPHINXOPTS) $(BUILDDIR)/htmlhelp
-	@echo
-	@echo "Build finished; now you can run HTML Help Workshop with the" \
-	      ".hhp project file in $(BUILDDIR)/htmlhelp."
-
-.PHONY: qthelp
-qthelp:
-	$(SPHINXBUILD) -b qthelp $(ALLSPHINXOPTS) $(BUILDDIR)/qthelp
-	@echo
-	@echo "Build finished; now you can run "qcollectiongenerator" with the" \
-	      ".qhcp project file in $(BUILDDIR)/qthelp, like this:"
-	@echo "# qcollectiongenerator $(BUILDDIR)/qthelp/pyModeS.qhcp"
-	@echo "To view the help file:"
-	@echo "# assistant -collectionFile $(BUILDDIR)/qthelp/pyModeS.qhc"
-
-.PHONY: applehelp
-applehelp:
-	$(SPHINXBUILD) -b applehelp $(ALLSPHINXOPTS) $(BUILDDIR)/applehelp
-	@echo
-	@echo "Build finished. The help book is in $(BUILDDIR)/applehelp."
-	@echo "N.B. You won't be able to view it unless you put it in" \
-	      "~/Library/Documentation/Help or install it in your application" \
-	      "bundle."
-
-.PHONY: devhelp
-devhelp:
-	$(SPHINXBUILD) -b devhelp $(ALLSPHINXOPTS) $(BUILDDIR)/devhelp
-	@echo
-	@echo "Build finished."
-	@echo "To view the help file:"
-	@echo "# mkdir -p $$HOME/.local/share/devhelp/pyModeS"
-	@echo "# ln -s $(BUILDDIR)/devhelp $$HOME/.local/share/devhelp/pyModeS"
-	@echo "# devhelp"
-
-.PHONY: epub
-epub:
-	$(SPHINXBUILD) -b epub $(ALLSPHINXOPTS) $(BUILDDIR)/epub
-	@echo
-	@echo "Build finished. The epub file is in $(BUILDDIR)/epub."
-
-.PHONY: epub3
-epub3:
-	$(SPHINXBUILD) -b epub3 $(ALLSPHINXOPTS) $(BUILDDIR)/epub3
-	@echo
-	@echo "Build finished. The epub3 file is in $(BUILDDIR)/epub3."
-
-.PHONY: latex
-latex:
-	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
-	@echo
-	@echo "Build finished; the LaTeX files are in $(BUILDDIR)/latex."
-	@echo "Run \`make' in that directory to run these through (pdf)latex" \
-	      "(use \`make latexpdf' here to do that automatically)."
-
-.PHONY: latexpdf
-latexpdf:
-	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
-	@echo "Running LaTeX files through pdflatex..."
-	$(MAKE) -C $(BUILDDIR)/latex all-pdf
-	@echo "pdflatex finished; the PDF files are in $(BUILDDIR)/latex."
-
-.PHONY: latexpdfja
-latexpdfja:
-	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
-	@echo "Running LaTeX files through platex and dvipdfmx..."
-	$(MAKE) -C $(BUILDDIR)/latex all-pdf-ja
-	@echo "pdflatex finished; the PDF files are in $(BUILDDIR)/latex."
-
-.PHONY: text
-text:
-	$(SPHINXBUILD) -b text $(ALLSPHINXOPTS) $(BUILDDIR)/text
-	@echo
-	@echo "Build finished. The text files are in $(BUILDDIR)/text."
-
-.PHONY: man
-man:
-	$(SPHINXBUILD) -b man $(ALLSPHINXOPTS) $(BUILDDIR)/man
-	@echo
-	@echo "Build finished. The manual pages are in $(BUILDDIR)/man."
-
-.PHONY: texinfo
-texinfo:
-	$(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
-	@echo
-	@echo "Build finished. The Texinfo files are in $(BUILDDIR)/texinfo."
-	@echo "Run \`make' in that directory to run these through makeinfo" \
-	      "(use \`make info' here to do that automatically)."
-
-.PHONY: info
-info:
-	$(SPHINXBUILD) -b texinfo $(ALLSPHINXOPTS) $(BUILDDIR)/texinfo
-	@echo "Running Texinfo files through makeinfo..."
-	make -C $(BUILDDIR)/texinfo info
-	@echo "makeinfo finished; the Info files are in $(BUILDDIR)/texinfo."
-
-.PHONY: gettext
-gettext:
-	$(SPHINXBUILD) -b gettext $(I18NSPHINXOPTS) $(BUILDDIR)/locale
-	@echo
-	@echo "Build finished. The message catalogs are in $(BUILDDIR)/locale."
-
-.PHONY: changes
-changes:
-	$(SPHINXBUILD) -b changes $(ALLSPHINXOPTS) $(BUILDDIR)/changes
-	@echo
-	@echo "The overview file is in $(BUILDDIR)/changes."
-
-.PHONY: linkcheck
-linkcheck:
-	$(SPHINXBUILD) -b linkcheck $(ALLSPHINXOPTS) $(BUILDDIR)/linkcheck
-	@echo
-	@echo "Link check complete; look for any errors in the above output " \
-	      "or in $(BUILDDIR)/linkcheck/output.txt."
-
-.PHONY: doctest
-doctest:
-	$(SPHINXBUILD) -b doctest $(ALLSPHINXOPTS) $(BUILDDIR)/doctest
-	@echo "Testing of doctests in the sources finished, look at the " \
-	      "results in $(BUILDDIR)/doctest/output.txt."
-
-.PHONY: coverage
-coverage:
-	$(SPHINXBUILD) -b coverage $(ALLSPHINXOPTS) $(BUILDDIR)/coverage
-	@echo "Testing of coverage in the sources finished, look at the " \
-	      "results in $(BUILDDIR)/coverage/python.txt."
-
-.PHONY: xml
-xml:
-	$(SPHINXBUILD) -b xml $(ALLSPHINXOPTS) $(BUILDDIR)/xml
-	@echo
-	@echo "Build finished. The XML files are in $(BUILDDIR)/xml."
-
-.PHONY: pseudoxml
-pseudoxml:
-	$(SPHINXBUILD) -b pseudoxml $(ALLSPHINXOPTS) $(BUILDDIR)/pseudoxml
-	@echo
-	@echo "Build finished. The pseudo-XML files are in $(BUILDDIR)/pseudoxml."
-
-.PHONY: dummy
-dummy:
-	$(SPHINXBUILD) -b dummy $(ALLSPHINXOPTS) $(BUILDDIR)/dummy
-	@echo
-	@echo "Build finished. Dummy builder generates no files."
+# Catch-all target: route all unknown targets to Sphinx using the new
+# "make mode" option.  $(O) is meant as a shortcut for $(SPHINXOPTS).
+%: Makefile
+	rm -f source/pyModeS*.rst source/modules.rst
+	sphinx-apidoc -f -e -M -o source/ ../pyModeS
+	@$(SPHINXBUILD) -M $@ "$(SOURCEDIR)" "$(BUILDDIR)" $(SPHINXOPTS) $(O)

doc/README.rst

@@ -0,0 +1,7 @@
+How to generate the apidoc
+====================================
+
+::
+
+  cd doc
+  make html

doc/conf.py

@@ -1,337 +0,0 @@
-# -*- coding: utf-8 -*-
-#
-# pyModeS documentation build configuration file, created by
-# sphinx-quickstart on Tue Aug 16 15:47:05 2016.
-#
-# This file is execfile()d with the current directory set to its
-# containing dir.
-#
-# Note that not all possible configuration values are present in this
-# autogenerated file.
-#
-# All configuration values have a default; values that are commented out
-# serve to show the default.
-
-# If extensions (or modules to document with autodoc) are in another directory,
-# add these directories to sys.path here. If the directory is relative to the
-# documentation root, use os.path.abspath to make it absolute, like shown here.
-#
-# import os
-# import sys
-# sys.path.insert(0, os.path.abspath('.'))
-
-# -- General configuration ------------------------------------------------
-
-# If your documentation needs a minimal Sphinx version, state it here.
-#
-# needs_sphinx = '1.0'
-
-# Add any Sphinx extension module names here, as strings. They can be
-# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
-# ones.
-extensions = [
-    'sphinx.ext.autodoc',
-    'sphinx.ext.doctest',
-    'sphinx.ext.todo',
-    'sphinx.ext.coverage',
-]
-
-# Add any paths that contain templates here, relative to this directory.
-templates_path = ['_templates']
-
-# The suffix(es) of source filenames.
-# You can specify multiple suffix as a list of string:
-#
-# source_suffix = ['.rst', '.md']
-source_suffix = '.rst'
-
-# The encoding of source files.
-#
-# source_encoding = 'utf-8-sig'
-
-# The master toctree document.
-master_doc = 'index'
-
-# General information about the project.
-project = u'pyModeS'
-copyright = u'2016, Junzi Sun'
-author = u'Junzi Sun'
-
-# The version info for the project you're documenting, acts as replacement for
-# |version| and |release|, also used in various other places throughout the
-# built documents.
-#
-# The short X.Y version.
-version = u'1.0.5'
-# The full version, including alpha/beta/rc tags.
-release = u'1.0.5'
-
-# The language for content autogenerated by Sphinx. Refer to documentation
-# for a list of supported languages.
-#
-# This is also used if you do content translation via gettext catalogs.
-# Usually you set "language" from the command line for these cases.
-language = None
-
-# There are two options for replacing |today|: either, you set today to some
-# non-false value, then it is used:
-#
-# today = ''
-#
-# Else, today_fmt is used as the format for a strftime call.
-#
-# today_fmt = '%B %d, %Y'
-
-# List of patterns, relative to source directory, that match files and
-# directories to ignore when looking for source files.
-# This patterns also effect to html_static_path and html_extra_path
-exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store']
-
-# The reST default role (used for this markup: `text`) to use for all
-# documents.
-#
-# default_role = None
-
-# If true, '()' will be appended to :func: etc. cross-reference text.
-#
-# add_function_parentheses = True
-
-# If true, the current module name will be prepended to all description
-# unit titles (such as .. function::).
-#
-# add_module_names = True
-
-# If true, sectionauthor and moduleauthor directives will be shown in the
-# output. They are ignored by default.
-#
-# show_authors = False
-
-# The name of the Pygments (syntax highlighting) style to use.
-pygments_style = 'sphinx'
-
-# A list of ignored prefixes for module index sorting.
-# modindex_common_prefix = []
-
-# If true, keep warnings as "system message" paragraphs in the built documents.
-# keep_warnings = False
-
-# If true, `todo` and `todoList` produce output, else they produce nothing.
-todo_include_todos = True
-
-
-# -- Options for HTML output ----------------------------------------------
-
-# The theme to use for HTML and HTML Help pages.  See the documentation for
-# a list of builtin themes.
-#
-# html_theme = 'alabaster'
-
-# Theme options are theme-specific and customize the look and feel of a theme
-# further.  For a list of options available for each theme, see the
-# documentation.
-#
-# html_theme_options = {}
-
-# Add any paths that contain custom themes here, relative to this directory.
-# html_theme_path = []
-
-# The name for this set of Sphinx documents.
-# "<project> v<release> documentation" by default.
-#
-# html_title = u'pyModeS v1.0.5'
-
-# A shorter title for the navigation bar.  Default is the same as html_title.
-#
-# html_short_title = None
-
-# The name of an image file (relative to this directory) to place at the top
-# of the sidebar.
-#
-# html_logo = None
-
-# The name of an image file (relative to this directory) to use as a favicon of
-# the docs.  This file should be a Windows icon file (.ico) being 16x16 or 32x32
-# pixels large.
-#
-# html_favicon = None
-
-# Add any paths that contain custom static files (such as style sheets) here,
-# relative to this directory. They are copied after the builtin static files,
-# so a file named "default.css" will overwrite the builtin "default.css".
-html_static_path = ['_static']
-
-# Add any extra paths that contain custom files (such as robots.txt or
-# .htaccess) here, relative to this directory. These files are copied
-# directly to the root of the documentation.
-#
-# html_extra_path = []
-
-# If not None, a 'Last updated on:' timestamp is inserted at every page
-# bottom, using the given strftime format.
-# The empty string is equivalent to '%b %d, %Y'.
-#
-# html_last_updated_fmt = None
-
-# If true, SmartyPants will be used to convert quotes and dashes to
-# typographically correct entities.
-#
-# html_use_smartypants = True
-
-# Custom sidebar templates, maps document names to template names.
-#
-# html_sidebars = {}
-
-# Additional templates that should be rendered to pages, maps page names to
-# template names.
-#
-# html_additional_pages = {}
-
-# If false, no module index is generated.
-#
-# html_domain_indices = True
-
-# If false, no index is generated.
-#
-# html_use_index = True
-
-# If true, the index is split into individual pages for each letter.
-#
-# html_split_index = False
-
-# If true, links to the reST sources are added to the pages.
-#
-# html_show_sourcelink = True
-
-# If true, "Created using Sphinx" is shown in the HTML footer. Default is True.
-#
-# html_show_sphinx = True
-
-# If true, "(C) Copyright ..." is shown in the HTML footer. Default is True.
-#
-# html_show_copyright = True
-
-# If true, an OpenSearch description file will be output, and all pages will
-# contain a <link> tag referring to it.  The value of this option must be the
-# base URL from which the finished HTML is served.
-#
-# html_use_opensearch = ''
-
-# This is the file name suffix for HTML files (e.g. ".xhtml").
-# html_file_suffix = None
-
-# Language to be used for generating the HTML full-text search index.
-# Sphinx supports the following languages:
-#   'da', 'de', 'en', 'es', 'fi', 'fr', 'hu', 'it', 'ja'
-#   'nl', 'no', 'pt', 'ro', 'ru', 'sv', 'tr', 'zh'
-#
-# html_search_language = 'en'
-
-# A dictionary with options for the search language support, empty by default.
-# 'ja' uses this config value.
-# 'zh' user can custom change `jieba` dictionary path.
-#
-# html_search_options = {'type': 'default'}
-
-# The name of a javascript file (relative to the configuration directory) that
-# implements a search results scorer. If empty, the default will be used.
-#
-# html_search_scorer = 'scorer.js'
-
-# Output file base name for HTML help builder.
-htmlhelp_basename = 'pyModeSdoc'
-
-# -- Options for LaTeX output ---------------------------------------------
-
-latex_elements = {
-     # The paper size ('letterpaper' or 'a4paper').
-     #
-     # 'papersize': 'letterpaper',
-
-     # The font size ('10pt', '11pt' or '12pt').
-     #
-     # 'pointsize': '10pt',
-
-     # Additional stuff for the LaTeX preamble.
-     #
-     # 'preamble': '',
-
-     # Latex figure (float) alignment
-     #
-     # 'figure_align': 'htbp',
-}
-
-# Grouping the document tree into LaTeX files. List of tuples
-# (source start file, target name, title,
-#  author, documentclass [howto, manual, or own class]).
-latex_documents = [
-    (master_doc, 'pyModeS.tex', u'pyModeS Documentation',
-     u'Junzi Sun', 'manual'),
-]
-
-# The name of an image file (relative to this directory) to place at the top of
-# the title page.
-#
-# latex_logo = None
-
-# For "manual" documents, if this is true, then toplevel headings are parts,
-# not chapters.
-#
-# latex_use_parts = False
-
-# If true, show page references after internal links.
-#
-# latex_show_pagerefs = False
-
-# If true, show URL addresses after external links.
-#
-# latex_show_urls = False
-
-# Documents to append as an appendix to all manuals.
-#
-# latex_appendices = []
-
-# If false, no module index is generated.
-#
-# latex_domain_indices = True
-
-
-# -- Options for manual page output ---------------------------------------
-
-# One entry per manual page. List of tuples
-# (source start file, name, description, authors, manual section).
-man_pages = [
-    (master_doc, 'pymodes', u'pyModeS Documentation',
-     [author], 1)
-]
-
-# If true, show URL addresses after external links.
-#
-# man_show_urls = False
-
-
-# -- Options for Texinfo output -------------------------------------------
-
-# Grouping the document tree into Texinfo files. List of tuples
-# (source start file, target name, title, author,
-#  dir menu entry, description, category)
-texinfo_documents = [
-    (master_doc, 'pyModeS', u'pyModeS Documentation',
-     author, 'pyModeS', 'One line description of project.',
-     'Miscellaneous'),
-]
-
-# Documents to append as an appendix to all manuals.
-#
-# texinfo_appendices = []
-
-# If false, no module index is generated.
-#
-# texinfo_domain_indices = True
-
-# How to display URL addresses: 'footnote', 'no', or 'inline'.
-#
-# texinfo_show_urls = 'footnote'
-
-# If true, do not generate a @detailmenu in the "Top" node's menu.
-#
-# texinfo_no_detailmenu = False

doc/index.rst

@@ -1,40 +0,0 @@
-.. pyModeS documentation master file, created by
-   sphinx-quickstart on Tue Aug 16 15:47:05 2016.
-   You can adapt this file completely to your liking, but it should at least
-   contain the root `toctree` directive.
-
-
-pyModeS APIs
-=====================
-
-This document contains all the functions within pyModeS package. 
-
-Source code and user guide: https://github.com/junzis/pyModeS
-
-
-pyModeS.adsb module
--------------------
-
-.. automodule:: pyModeS.adsb
-    :members:
-    :undoc-members:
-    :show-inheritance:
-
-
-pyModeS.ehs module
-------------------
-
-.. automodule:: pyModeS.ehs
-    :members:
-    :undoc-members:
-    :show-inheritance:
-
-
-pyModeS.util module
--------------------
-
-.. automodule:: pyModeS.util
-    :members:
-    :undoc-members:
-    :show-inheritance:
-

doc/requirements.txt

@@ -1 +0,0 @@
-pyModeS==1.1.0

doc/source/conf.py

@@ -0,0 +1,188 @@
+# -*- coding: utf-8 -*-
+#
+# Configuration file for the Sphinx documentation builder.
+#
+# This file does only contain a selection of the most common options. For a
+# full list see the documentation:
+# http://www.sphinx-doc.org/en/master/config
+
+# -- Path setup --------------------------------------------------------------
+
+# If extensions (or modules to document with autodoc) are in another directory,
+# add these directories to sys.path here. If the directory is relative to the
+# documentation root, use os.path.abspath to make it absolute, like shown here.
+#
+import os
+import sys
+sys.path.insert(0, os.path.abspath('../..'))
+
+
+# -- Project information -----------------------------------------------------
+
+project = 'pyModeS'
+copyright = '2019, Junzi Sun'
+author = 'Junzi Sun'
+
+# The short X.Y version
+version = ''
+# The full version, including alpha/beta/rc tags
+release = ''
+
+
+# -- General configuration ---------------------------------------------------
+
+# If your documentation needs a minimal Sphinx version, state it here.
+#
+# needs_sphinx = '1.0'
+
+# Add any Sphinx extension module names here, as strings. They can be
+# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
+# ones.
+extensions = [
+    'sphinx.ext.autodoc',
+    'sphinx.ext.todo',
+    'sphinx.ext.coverage',
+    'sphinx.ext.mathjax',
+    'sphinx.ext.viewcode',
+    'sphinx.ext.githubpages',
+    'sphinx.ext.napoleon',
+]
+
+# Add any paths that contain templates here, relative to this directory.
+# templates_path = ['']
+
+# The suffix(es) of source filenames.
+# You can specify multiple suffix as a list of string:
+#
+# source_suffix = ['.rst', '.md']
+source_suffix = '.rst'
+
+# The master toctree document.
+master_doc = 'index'
+
+# The language for content autogenerated by Sphinx. Refer to documentation
+# for a list of supported languages.
+#
+# This is also used if you do content translation via gettext catalogs.
+# Usually you set "language" from the command line for these cases.
+language = None
+
+# List of patterns, relative to source directory, that match files and
+# directories to ignore when looking for source files.
+# This pattern also affects html_static_path and html_extra_path.
+exclude_patterns = []
+
+# The name of the Pygments (syntax highlighting) style to use.
+pygments_style = None
+
+
+# -- Options for HTML output -------------------------------------------------
+
+# The theme to use for HTML and HTML Help pages.  See the documentation for
+# a list of builtin themes.
+#
+# html_theme = 'alabaster'
+
+# Theme options are theme-specific and customize the look and feel of a theme
+# further.  For a list of options available for each theme, see the
+# documentation.
+#
+# html_theme_options = {}
+
+# Add any paths that contain custom static files (such as style sheets) here,
+# relative to this directory. They are copied after the builtin static files,
+# so a file named "default.css" will overwrite the builtin "default.css".
+# html_static_path = ['']
+
+# Custom sidebar templates, must be a dictionary that maps document names
+# to template names.
+#
+# The default sidebars (for documents that don't match any pattern) are
+# defined by theme itself.  Builtin themes are using these templates by
+# default: ``['localtoc.html', 'relations.html', 'sourcelink.html',
+# 'searchbox.html']``.
+#
+# html_sidebars = {}
+
+
+# -- Options for HTMLHelp output ---------------------------------------------
+
+# Output file base name for HTML help builder.
+htmlhelp_basename = 'pyModeSdoc'
+
+
+# -- Options for LaTeX output ------------------------------------------------
+
+latex_elements = {
+    # The paper size ('letterpaper' or 'a4paper').
+    #
+    # 'papersize': 'letterpaper',
+
+    # The font size ('10pt', '11pt' or '12pt').
+    #
+    # 'pointsize': '10pt',
+
+    # Additional stuff for the LaTeX preamble.
+    #
+    # 'preamble': '',
+
+    # Latex figure (float) alignment
+    #
+    # 'figure_align': 'htbp',
+}
+
+# Grouping the document tree into LaTeX files. List of tuples
+# (source start file, target name, title,
+#  author, documentclass [howto, manual, or own class]).
+latex_documents = [
+    (master_doc, 'pyModeS.tex', 'pyModeS Documentation',
+     'Junzi Sun', 'manual'),
+]
+
+
+# -- Options for manual page output ------------------------------------------
+
+# One entry per manual page. List of tuples
+# (source start file, name, description, authors, manual section).
+man_pages = [
+    (master_doc, 'pymodes', 'pyModeS Documentation',
+     [author], 1)
+]
+
+
+# -- Options for Texinfo output ----------------------------------------------
+
+# Grouping the document tree into Texinfo files. List of tuples
+# (source start file, target name, title, author,
+#  dir menu entry, description, category)
+texinfo_documents = [
+    (master_doc, 'pyModeS', 'pyModeS Documentation',
+     author, 'pyModeS', 'One line description of project.',
+     'Miscellaneous'),
+]
+
+
+# -- Options for Epub output -------------------------------------------------
+
+# Bibliographic Dublin Core info.
+epub_title = project
+
+# The unique identifier of the text. This can be a ISBN number
+# or the project homepage.
+#
+# epub_identifier = ''
+
+# A unique identification for the text.
+#
+# epub_uid = ''
+
+# A list of files that should not be packed into the epub file.
+epub_exclude_files = ['search.html']
+
+
+# -- Extension configuration -------------------------------------------------
+
+# -- Options for todo extension ----------------------------------------------
+
+# If true, `todo` and `todoList` produce output, else they produce nothing.
+todo_include_todos = True

doc/source/index.rst

@@ -0,0 +1,30 @@
+.. pyModeS documentation master file, created by
+   sphinx-quickstart on Mon Apr  1 13:13:10 2019.
+   You can adapt this file completely to your liking, but it should at least
+   contain the root `toctree` directive.
+
+Welcome to pyModeS documentation!
+===================================
+
+The source code can be found at: https://github.com/junzis/pyModeS
+
+.. toctree::
+   :maxdepth: 3
+
+   pyModeS.decoder
+   pyModeS.streamer
+   pyModeS.extra
+
+
+----
+
+.. include:: ../../README.rst
+
+----
+
+Indices and tables
+**********************
+
+* :ref:`genindex`
+* :ref:`modindex`
+* :ref:`search`

doc/source/make.bat

@@ -0,0 +1,35 @@
+@ECHO OFF
+
+pushd %~dp0
+
+REM Command file for Sphinx documentation
+
+if "%SPHINXBUILD%" == "" (
+	set SPHINXBUILD=sphinx-build
+)
+set SOURCEDIR=.
+set BUILDDIR=_build
+
+if "%1" == "" goto help
+
+%SPHINXBUILD% >NUL 2>NUL
+if errorlevel 9009 (
+	echo.
+	echo.The 'sphinx-build' command was not found. Make sure you have Sphinx
+	echo.installed, then set the SPHINXBUILD environment variable to point
+	echo.to the full path of the 'sphinx-build' executable. Alternatively you
+	echo.may add the Sphinx directory to PATH.
+	echo.
+	echo.If you don't have Sphinx installed, grab it from
+	echo.http://sphinx-doc.org/
+	exit /b 1
+)
+
+%SPHINXBUILD% -M %1 %SOURCEDIR% %BUILDDIR% %SPHINXOPTS%
+goto end
+
+:help
+%SPHINXBUILD% -M help %SOURCEDIR% %BUILDDIR% %SPHINXOPTS%
+
+:end
+popd

doc/source/modules.rst

@@ -0,0 +1,7 @@
+pyModeS
+=======
+
+.. toctree::
+   :maxdepth: 4
+
+   pyModeS

doc/source/pyModeS.decoder.acas.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.acas module
+===========================
+
+.. automodule:: pyModeS.decoder.acas
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.adsb.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.adsb module
+===========================
+
+.. automodule:: pyModeS.decoder.adsb
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.allcall.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.allcall module
+==============================
+
+.. automodule:: pyModeS.decoder.allcall
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.bds.bds05.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.bds.bds05 module
+================================
+
+.. automodule:: pyModeS.decoder.bds.bds05
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.bds.bds06.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.bds.bds06 module
+================================
+
+.. automodule:: pyModeS.decoder.bds.bds06
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.bds.bds08.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.bds.bds08 module
+================================
+
+.. automodule:: pyModeS.decoder.bds.bds08
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.bds.bds09.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.bds.bds09 module
+================================
+
+.. automodule:: pyModeS.decoder.bds.bds09
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.bds.bds10.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.bds.bds10 module
+================================
+
+.. automodule:: pyModeS.decoder.bds.bds10
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.bds.bds17.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.bds.bds17 module
+================================
+
+.. automodule:: pyModeS.decoder.bds.bds17
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.bds.bds20.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.bds.bds20 module
+================================
+
+.. automodule:: pyModeS.decoder.bds.bds20
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.bds.bds30.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.bds.bds30 module
+================================
+
+.. automodule:: pyModeS.decoder.bds.bds30
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.bds.bds40.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.bds.bds40 module
+================================
+
+.. automodule:: pyModeS.decoder.bds.bds40
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.bds.bds44.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.bds.bds44 module
+================================
+
+.. automodule:: pyModeS.decoder.bds.bds44
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.bds.bds45.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.bds.bds45 module
+================================
+
+.. automodule:: pyModeS.decoder.bds.bds45
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.bds.bds50.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.bds.bds50 module
+================================
+
+.. automodule:: pyModeS.decoder.bds.bds50
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.bds.bds53.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.bds.bds53 module
+================================
+
+.. automodule:: pyModeS.decoder.bds.bds53
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.bds.bds60.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.bds.bds60 module
+================================
+
+.. automodule:: pyModeS.decoder.bds.bds60
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.bds.rst

@@ -0,0 +1,28 @@
+pyModeS.decoder.bds package
+===========================
+
+.. automodule:: pyModeS.decoder.bds
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+Submodules
+----------
+
+.. toctree::
+
+   pyModeS.decoder.bds.bds05
+   pyModeS.decoder.bds.bds06
+   pyModeS.decoder.bds.bds08
+   pyModeS.decoder.bds.bds09
+   pyModeS.decoder.bds.bds10
+   pyModeS.decoder.bds.bds17
+   pyModeS.decoder.bds.bds20
+   pyModeS.decoder.bds.bds30
+   pyModeS.decoder.bds.bds40
+   pyModeS.decoder.bds.bds44
+   pyModeS.decoder.bds.bds45
+   pyModeS.decoder.bds.bds50
+   pyModeS.decoder.bds.bds53
+   pyModeS.decoder.bds.bds60
+

doc/source/pyModeS.decoder.commb.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.commb module
+============================
+
+.. automodule:: pyModeS.decoder.commb
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.common.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.common module
+=============================
+
+.. automodule:: pyModeS.decoder.common
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.ehs.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.ehs module
+==========================
+
+.. automodule:: pyModeS.decoder.ehs
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.els.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.els module
+==========================
+
+.. automodule:: pyModeS.decoder.els
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.rst

@@ -0,0 +1,30 @@
+pyModeS.decoder package
+=======================
+
+.. automodule:: pyModeS.decoder
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+Subpackages
+-----------
+
+.. toctree::
+
+    pyModeS.decoder.bds
+
+Submodules
+----------
+
+.. toctree::
+
+   pyModeS.decoder.acas
+   pyModeS.decoder.adsb
+   pyModeS.decoder.allcall
+   pyModeS.decoder.commb
+   pyModeS.decoder.common
+   pyModeS.decoder.ehs
+   pyModeS.decoder.els
+   pyModeS.decoder.surv
+   pyModeS.decoder.uncertainty
+

doc/source/pyModeS.decoder.surv.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.surv module
+===========================
+
+.. automodule:: pyModeS.decoder.surv
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.decoder.uncertainty.rst

@@ -0,0 +1,7 @@
+pyModeS.decoder.uncertainty module
+==================================
+
+.. automodule:: pyModeS.decoder.uncertainty
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.extra.aero.rst

@@ -0,0 +1,7 @@
+pyModeS.extra.aero module
+=========================
+
+.. automodule:: pyModeS.extra.aero
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.extra.rst

@@ -0,0 +1,16 @@
+pyModeS.extra package
+=====================
+
+.. automodule:: pyModeS.extra
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+Submodules
+----------
+
+.. toctree::
+
+   pyModeS.extra.aero
+   pyModeS.extra.tcpclient
+

doc/source/pyModeS.extra.tcpclient.rst

@@ -0,0 +1,7 @@
+pyModeS.extra.tcpclient module
+==============================
+
+.. automodule:: pyModeS.extra.tcpclient
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.rst

@@ -0,0 +1,17 @@
+pyModeS package
+===============
+
+.. automodule:: pyModeS
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+Subpackages
+-----------
+
+.. toctree::
+
+    pyModeS.decoder
+    pyModeS.extra
+    pyModeS.streamer
+

doc/source/pyModeS.streamer.rst

@@ -0,0 +1,16 @@
+pyModeS.streamer package
+========================
+
+.. automodule:: pyModeS.streamer
+    :members:
+    :undoc-members:
+    :show-inheritance:
+
+Submodules
+----------
+
+.. toctree::
+
+   pyModeS.streamer.screen
+   pyModeS.streamer.stream
+

doc/source/pyModeS.streamer.screen.rst

@@ -0,0 +1,7 @@
+pyModeS.streamer.screen module
+==============================
+
+.. automodule:: pyModeS.streamer.screen
+    :members:
+    :undoc-members:
+    :show-inheritance:

doc/source/pyModeS.streamer.stream.rst

@@ -0,0 +1,7 @@
+pyModeS.streamer.stream module
+==============================
+
+.. automodule:: pyModeS.streamer.stream
+    :members:
+    :undoc-members:
+    :show-inheritance:

pyModeS/__init__.py

@@ -1,15 +1,22 @@
 from __future__ import absolute_import, print_function, division
 
-from .decoder.common import *
+import os
+import warnings
+
+try:
+    from .decoder import c_common as common
+    from .decoder.c_common import *
+except:
+    from .decoder import common
+    from .decoder.common import *
+
+from .decoder import tell
 from .decoder import adsb
 from .decoder import commb
-from .decoder import common
 from .decoder import bds
 from .extra import aero
 from .extra import tcpclient
 
-# from .decoder import els        # depricated
-# from .decoder import ehs        # depricated
+warnings.simplefilter("once", DeprecationWarning)
 
-import os
 dirpath = os.path.dirname(os.path.realpath(__file__))

pyModeS/decoder/__init__.py

@@ -1,3 +1,145 @@
 from __future__ import absolute_import, print_function, division
 
-from pyModeS.decoder import *
+from pyModeS.decoder import adsb, commb, common, bds
+
+
+def tell(msg):
+    def _print(label, value, unit=None):
+        print("%20s: " % label, end="")
+        print("%s " % value, end="")
+        if unit:
+            print(unit)
+        else:
+            print()
+
+    df = common.df(msg)
+    icao = common.icao(msg)
+
+    _print("Message", msg)
+    _print("ICAO address", icao)
+    _print("Downlink Format", df)
+
+    if df == 17:
+        _print("Protocal", "Mode-S Extended Squitter (ADS-B)")
+
+        tc = common.typecode(msg)
+        if 1 <= tc <= 4:  # callsign
+            callsign = adsb.callsign(msg)
+            _print("Type", "Identitification and category")
+            _print("Callsign:", callsign)
+
+        if 5 <= tc <= 8:  # surface position
+            _print("Type", "Surface postition")
+            oe = adsb.oe_flag(msg)
+            msgbin = common.hex2bin(msg)
+            cprlat = common.bin2int(msgbin[54:71]) / 131072.0
+            cprlon = common.bin2int(msgbin[71:88]) / 131072.0
+            v = adsb.surface_velocity(msg)
+            _print("CPR format", "Odd" if oe else "Even")
+            _print("CPR Latitude", cprlat)
+            _print("CPR Longitude", cprlon)
+            _print("Speed", v[0], "knots")
+            _print("Track", v[1], "degrees")
+
+        if 9 <= tc <= 18:  # airborne position
+            _print("Type", "Airborne position (with barometric altitude)")
+            alt = adsb.altitude(msg)
+            oe = adsb.oe_flag(msg)
+            msgbin = common.hex2bin(msg)
+            cprlat = common.bin2int(msgbin[54:71]) / 131072.0
+            cprlon = common.bin2int(msgbin[71:88]) / 131072.0
+            _print("CPR format", "Odd" if oe else "Even")
+            _print("CPR Latitude", cprlat)
+            _print("CPR Longitude", cprlon)
+            _print("Altitude", alt, "feet")
+
+        if tc == 19:
+            _print("Type", "Airborne velocity")
+            spd, trk, vr, t = adsb.velocity(msg)
+            types = {"GS": "Ground speed", "TAS": "True airspeed"}
+            _print("Speed", spd, "knots")
+            _print("Track", trk, "degrees")
+            _print("Vertical rate", vr, "feet/minute")
+            _print("Type", types[t])
+
+        if 20 <= tc <= 22:  # airborne position
+            _print("Type", "Airborne position (with GNSS altitude)")
+            alt = adsb.altitude(msg)
+            oe = adsb.oe_flag(msg)
+            msgbin = common.hex2bin(msg)
+            cprlat = common.bin2int(msgbin[54:71]) / 131072.0
+            cprlon = common.bin2int(msgbin[71:88]) / 131072.0
+            _print("CPR format", "Odd" if oe else "Even")
+            _print("CPR Latitude", cprlat)
+            _print("CPR Longitude", cprlon)
+            _print("Altitude", alt, "feet")
+
+    if df == 20:
+        _print("Protocal", "Mode-S Comm-B altitude reply")
+        _print("Altitude", common.altcode(msg), "feet")
+
+    if df == 21:
+        _print("Protocal", "Mode-S Comm-B identity reply")
+        _print("Squawk code", common.idcode(msg))
+
+    if df == 20 or df == 21:
+        labels = {
+            "BDS10": "Data link capability",
+            "BDS17": "GICB capability",
+            "BDS20": "Aircraft identification",
+            "BDS30": "ACAS resolution",
+            "BDS40": "Vertical intention report",
+            "BDS50": "Track and turn report",
+            "BDS60": "Heading and speed report",
+            "BDS44": "Meteorological routine air report",
+            "BDS45": "Meteorological hazard report",
+            "EMPTY": "[No information available]",
+        }
+
+        BDS = bds.infer(msg, mrar=True)
+        if BDS in labels.keys():
+            _print("BDS", "%s (%s)" % (BDS, labels[BDS]))
+        else:
+            _print("BDS", BDS)
+
+        if BDS == "BDS20":
+            callsign = commb.cs20(msg)
+            _print("Callsign", callsign)
+
+        if BDS == "BDS40":
+            _print("MCP target alt", commb.selalt40mcp(msg), "feet")
+            _print("FMS Target alt", commb.selalt40fms(msg), "feet")
+            _print("Pressure", commb.p40baro(msg), "millibar")
+
+        if BDS == "BDS50":
+            _print("Roll angle", commb.roll50(msg), "degrees")
+            _print("Track angle", commb.trk50(msg), "degrees")
+            _print("Track rate", commb.rtrk50(msg), "degree/second")
+            _print("Ground speed", commb.gs50(msg), "knots")
+            _print("True airspeed", commb.tas50(msg), "knots")
+
+        if BDS == "BDS60":
+            _print("Megnatic Heading", commb.hdg60(msg), "degrees")
+            _print("Indicated airspeed", commb.ias60(msg), "knots")
+            _print("Mach number", commb.mach60(msg))
+            _print("Vertical rate (Baro)", commb.vr60baro(msg), "feet/minute")
+            _print("Vertical rate (INS)", commb.vr60ins(msg), "feet/minute")
+
+        if BDS == "BDS44":
+            _print("Wind speed", commb.wind44(msg)[0], "knots")
+            _print("Wind direction", commb.wind44(msg)[1], "degrees")
+            _print("Temperature 1", commb.temp44(msg)[0], "Celsius")
+            _print("Temperature 2", commb.temp44(msg)[1], "Celsius")
+            _print("Pressure", commb.p44(msg), "hPa")
+            _print("Humidity", commb.hum44(msg), "%")
+            _print("Turbulence", commb.turb44(msg))
+
+        if BDS == "BDS45":
+            _print("Turbulence", commb.turb45(msg))
+            _print("Wind shear", commb.ws45(msg))
+            _print("Microbust", commb.mb45(msg))
+            _print("Icing", commb.ic45(msg))
+            _print("Wake vortex", commb.wv45(msg))
+            _print("Temperature", commb.temp45(msg), "Celsius")
+            _print("Pressure", commb.p45(msg), "hPa")
+            _print("Radio height", commb.rh45(msg), "feet")

pyModeS/decoder/acas.py

@@ -1,20 +1,7 @@
-# Copyright (C) 2018 Junzi Sun (TU Delft)
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
 """
 Decoding Air-Air Surveillance (ACAS) DF=0/16
+
+[To be implemented]
 """
 
 from __future__ import absolute_import, print_function, division

pyModeS/decoder/adsb.py

@@ -1,20 +1,16 @@
-# Copyright (C) 2015 Junzi Sun (TU Delft)
+"""ADS-B Wrapper.
 
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
+The ADS-B wrapper also imports functions from the following modules:
 
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
+- pyModeS.decoder.bds.bds05
+    Functions: ``airborne_position``, ``airborne_position_with_ref``, ``altitude``
+- pyModeS.decoder.bds.bds06
+    Functions: ``surface_position``, ``surface_position_with_ref``, ``surface_velocity``
+- pyModeS.decoder.bds.bds08
+    Functions: ``category``, ``callsign``
+- pyModeS.decoder.bds.bds09
+    Functions: ``airborne_velocity``, ``altitude_diff``
 
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-"""
-The wrapper for decoding ADS-B messages
 """
 
 from __future__ import absolute_import, print_function, division
@@ -24,20 +20,32 @@ from pyModeS.decoder import common
 from pyModeS.decoder import uncertainty
 
 # from pyModeS.decoder.bds import bds05, bds06, bds09
-from pyModeS.decoder.bds.bds05 import airborne_position, airborne_position_with_ref, altitude
-from pyModeS.decoder.bds.bds06 import surface_position, surface_position_with_ref, surface_velocity
+from pyModeS.decoder.bds.bds05 import (
+    airborne_position,
+    airborne_position_with_ref,
+    altitude as altitude05,
+)
+from pyModeS.decoder.bds.bds06 import (
+    surface_position,
+    surface_position_with_ref,
+    surface_velocity,
+)
 from pyModeS.decoder.bds.bds08 import category, callsign
 from pyModeS.decoder.bds.bds09 import airborne_velocity, altitude_diff
 
+
 def df(msg):
     return common.df(msg)
 
+
 def icao(msg):
     return common.icao(msg)
 
+
 def typecode(msg):
     return common.typecode(msg)
 
+
 def position(msg0, msg1, t0, t1, lat_ref=None, lon_ref=None):
     """Decode position from a pair of even and odd position message
     (works with both airborne and surface position messages)
@@ -54,19 +62,21 @@ def position(msg0, msg1, t0, t1, lat_ref=None, lon_ref=None):
     tc0 = typecode(msg0)
     tc1 = typecode(msg1)
 
-    if (5<=tc0<=8 and 5<=tc1<=8):
+    if 5 <= tc0 <= 8 and 5 <= tc1 <= 8:
         if (not lat_ref) or (not lon_ref):
-            raise RuntimeError("Surface position encountered, a reference \
+            raise RuntimeError(
+                "Surface position encountered, a reference \
                                position lat/lon required. Location of \
-                               receiver can be used.")
+                               receiver can be used."
+            )
         else:
             return surface_position(msg0, msg1, t0, t1, lat_ref, lon_ref)
 
-    elif (9<=tc0<=18 and 9<=tc1<=18):
+    elif 9 <= tc0 <= 18 and 9 <= tc1 <= 18:
         # Airborne position with barometric height
         return airborne_position(msg0, msg1, t0, t1)
 
-    elif (20<=tc0<=22 and 20<=tc1<=22):
+    elif 20 <= tc0 <= 22 and 20 <= tc1 <= 22:
         # Airborne position with GNSS height
         return airborne_position(msg0, msg1, t0, t1)
 
@@ -93,10 +103,10 @@ def position_with_ref(msg, lat_ref, lon_ref):
 
     tc = typecode(msg)
 
-    if 5<=tc<=8:
+    if 5 <= tc <= 8:
         return surface_position_with_ref(msg, lat_ref, lon_ref)
 
-    elif 9<=tc<=18 or 20<=tc<=22:
+    elif 9 <= tc <= 18 or 20 <= tc <= 22:
         return airborne_position_with_ref(msg, lat_ref, lon_ref)
 
     else:
@@ -115,44 +125,53 @@ def altitude(msg):
 
     tc = typecode(msg)
 
-    if tc<5 or tc==19 or tc>22:
+    if tc < 5 or tc == 19 or tc > 22:
         raise RuntimeError("%s: Not a position message" % msg)
 
-    if tc>=5 and tc<=8:
+    elif tc >= 5 and tc <= 8:
         # surface position, altitude 0
         return 0
 
-    msgbin = common.hex2bin(msg)
-    q = msgbin[47]
-    if q:
-        n = common.bin2int(msgbin[40:47]+msgbin[48:52])
-        alt = n * 25 - 1000
-        return alt
     else:
-        return None
+        # airborn position
+        return altitude05(msg)
 
 
-def velocity(msg):
+def velocity(msg, rtn_sources=False):
     """Calculate the speed, heading, and vertical rate
     (handles both airborne or surface message)
 
     Args:
         msg (string): 28 bytes hexadecimal message string
+        rtn_source (boolean): If the function will return
+            the sources for direction of travel and vertical
+            rate. This will change the return value from a four
+            element array to a six element array.
 
     Returns:
-        (int, float, int, string): speed (kt), ground track or heading (degree),
-            rate of climb/descend (ft/min), and speed type
-            ('GS' for ground speed, 'AS' for airspeed)
+        (int, float, int, string, string, string): speed (kt),
+            ground track or heading (degree),
+            rate of climb/descent (ft/min), speed type
+            ('GS' for ground speed, 'AS' for airspeed),
+            direction source ('true_north' for ground track / true north
+            as refrence, 'mag_north' for magnetic north as reference),
+            rate of climb/descent source ('Baro' for barometer, 'GNSS'
+            for GNSS constellation).
+
+            In the case of surface messages, None will be put in place
+            for vertical rate and its respective sources.
     """
 
     if 5 <= typecode(msg) <= 8:
-        return surface_velocity(msg)
+        return surface_velocity(msg, rtn_sources)
 
     elif typecode(msg) == 19:
-        return airborne_velocity(msg)
+        return airborne_velocity(msg, rtn_sources)
 
     else:
-        raise RuntimeError("incorrect or inconsistant message types, expecting 4<TC<9 or TC=19")
+        raise RuntimeError(
+            "incorrect or inconsistant message types, expecting 4<TC<9 or TC=19"
+        )
 
 
 def speed_heading(msg):
@@ -192,7 +211,9 @@ def version(msg):
     tc = typecode(msg)
 
     if tc != 31:
-        raise RuntimeError("%s: Not a status operation message, expecting TC = 31" % msg)
+        raise RuntimeError(
+            "%s: Not a status operation message, expecting TC = 31" % msg
+        )
 
     msgbin = common.hex2bin(msg)
     version = common.bin2int(msgbin[72:75])
@@ -218,18 +239,18 @@ def nuc_p(msg):
         raise RuntimeError(
             "%s: Not a surface position message (5<TC<8), \
             airborne position message (8<TC<19), \
-            or airborne position with GNSS height (20<TC<22)" % msg
+            or airborne position with GNSS height (20<TC<22)"
+            % msg
         )
 
     try:
         NUCp = uncertainty.TC_NUCp_lookup[tc]
-        HPL = uncertainty.NUCp[NUCp]['HPL']
-        RCu = uncertainty.NUCp[NUCp]['RCu']
-        RCv = uncertainty.NUCp[NUCp]['RCv']
+        HPL = uncertainty.NUCp[NUCp]["HPL"]
+        RCu = uncertainty.NUCp[NUCp]["RCu"]
+        RCv = uncertainty.NUCp[NUCp]["RCv"]
     except KeyError:
         HPL, RCu, RCv = uncertainty.NA, uncertainty.NA, uncertainty.NA
 
-
     if tc in [20, 21]:
         RCv = uncertainty.NA
 
@@ -249,15 +270,16 @@ def nuc_v(msg):
     tc = typecode(msg)
 
     if tc != 19:
-        raise RuntimeError("%s: Not an airborne velocity message, expecting TC = 19" % msg)
-
+        raise RuntimeError(
+            "%s: Not an airborne velocity message, expecting TC = 19" % msg
+        )
 
     msgbin = common.hex2bin(msg)
     NUCv = common.bin2int(msgbin[42:45])
 
     try:
-        HVE = uncertainty.NUCv[NUCv]['HVE']
-        VVE = uncertainty.NUCv[NUCv]['VVE']
+        HVE = uncertainty.NUCv[NUCv]["HVE"]
+        VVE = uncertainty.NUCv[NUCv]["VVE"]
     except KeyError:
         HVE, VVE = uncertainty.NA, uncertainty.NA
 
@@ -279,7 +301,8 @@ def nic_v1(msg, NICs):
         raise RuntimeError(
             "%s: Not a surface position message (5<TC<8), \
             airborne position message (8<TC<19), \
-            or airborne position with GNSS height (20<TC<22)" % msg
+            or airborne position with GNSS height (20<TC<22)"
+            % msg
         )
 
     tc = typecode(msg)
@@ -289,8 +312,8 @@ def nic_v1(msg, NICs):
         NIC = NIC[NICs]
 
     try:
-        Rc = uncertainty.NICv1[NIC][NICs]['Rc']
-        VPL = uncertainty.NICv1[NIC][NICs]['VPL']
+        Rc = uncertainty.NICv1[NIC][NICs]["Rc"]
+        VPL = uncertainty.NICv1[NIC][NICs]["VPL"]
     except KeyError:
         Rc, VPL = uncertainty.NA, uncertainty.NA
 
@@ -312,22 +335,23 @@ def nic_v2(msg, NICa, NICbc):
         raise RuntimeError(
             "%s: Not a surface position message (5<TC<8), \
             airborne position message (8<TC<19), \
-            or airborne position with GNSS height (20<TC<22)" % msg
+            or airborne position with GNSS height (20<TC<22)"
+            % msg
         )
 
     tc = typecode(msg)
     NIC = uncertainty.TC_NICv2_lookup[tc]
 
-    if 20<=tc<=22:
+    if 20 <= tc <= 22:
         NICs = 0
     else:
-        NICs = NICa*2 + NICbc
+        NICs = NICa * 2 + NICbc
 
     try:
         if isinstance(NIC, dict):
             NIC = NIC[NICs]
 
-        Rc = uncertainty.NICv2[NIC][NICs]['Rc']
+        Rc = uncertainty.NICv2[NIC][NICs]["Rc"]
     except KeyError:
         Rc = uncertainty.NA
 
@@ -346,7 +370,9 @@ def nic_s(msg):
     tc = typecode(msg)
 
     if tc != 31:
-        raise RuntimeError("%s: Not a status operation message, expecting TC = 31" % msg)
+        raise RuntimeError(
+            "%s: Not a status operation message, expecting TC = 31" % msg
+        )
 
     msgbin = common.hex2bin(msg)
     nic_s = int(msgbin[75])
@@ -366,7 +392,9 @@ def nic_a_c(msg):
     tc = typecode(msg)
 
     if tc != 31:
-        raise RuntimeError("%s: Not a status operation message, expecting TC = 31" % msg)
+        raise RuntimeError(
+            "%s: Not a status operation message, expecting TC = 31" % msg
+        )
 
     msgbin = common.hex2bin(msg)
     nic_a = int(msgbin[75])
@@ -387,7 +415,9 @@ def nic_b(msg):
     tc = typecode(msg)
 
     if tc < 9 or tc > 18:
-        raise RuntimeError("%s: Not a airborne position message, expecting 8<TC<19" % msg)
+        raise RuntimeError(
+            "%s: Not a airborne position message, expecting 8<TC<19" % msg
+        )
 
     msgbin = common.hex2bin(msg)
     nic_b = int(msgbin[39])
@@ -408,8 +438,11 @@ def nac_p(msg):
     tc = typecode(msg)
 
     if tc not in [29, 31]:
-        raise RuntimeError("%s: Not a target state and status message, \
-                           or operation status message, expecting TC = 29 or 31" % msg)
+        raise RuntimeError(
+            "%s: Not a target state and status message, \
+                           or operation status message, expecting TC = 29 or 31"
+            % msg
+        )
 
     msgbin = common.hex2bin(msg)
 
@@ -419,8 +452,8 @@ def nac_p(msg):
         NACp = common.bin2int(msgbin[76:80])
 
     try:
-        EPU = uncertainty.NACp[NACp]['EPU']
-        VEPU = uncertainty.NACp[NACp]['VEPU']
+        EPU = uncertainty.NACp[NACp]["EPU"]
+        VEPU = uncertainty.NACp[NACp]["VEPU"]
     except KeyError:
         EPU, VEPU = uncertainty.NA, uncertainty.NA
 
@@ -440,14 +473,16 @@ def nac_v(msg):
     tc = typecode(msg)
 
     if tc != 19:
-        raise RuntimeError("%s: Not an airborne velocity message, expecting TC = 19" % msg)
+        raise RuntimeError(
+            "%s: Not an airborne velocity message, expecting TC = 19" % msg
+        )
 
     msgbin = common.hex2bin(msg)
     NACv = common.bin2int(msgbin[42:45])
 
     try:
-        HFOMr = uncertainty.NACv[NACv]['HFOMr']
-        VFOMr = uncertainty.NACv[NACv]['VFOMr']
+        HFOMr = uncertainty.NACv[NACv]["HFOMr"]
+        VFOMr = uncertainty.NACv[NACv]["VFOMr"]
     except KeyError:
         HFOMr, VFOMr = uncertainty.NA, uncertainty.NA
 
@@ -468,8 +503,11 @@ def sil(msg, version):
     tc = typecode(msg)
 
     if tc not in [29, 31]:
-        raise RuntimeError("%s: Not a target state and status messag, \
-                           or operation status message, expecting TC = 29 or 31" % msg)
+        raise RuntimeError(
+            "%s: Not a target state and status messag, \
+                           or operation status message, expecting TC = 29 or 31"
+            % msg
+        )
 
     msgbin = common.hex2bin(msg)
 
@@ -479,12 +517,12 @@ def sil(msg, version):
         SIL = common.bin2int(msgbin[82:84])
 
     try:
-        PE_RCu = uncertainty.SIL[SIL]['PE_RCu']
-        PE_VPL = uncertainty.SIL[SIL]['PE_VPL']
+        PE_RCu = uncertainty.SIL[SIL]["PE_RCu"]
+        PE_VPL = uncertainty.SIL[SIL]["PE_VPL"]
     except KeyError:
         PE_RCu, PE_VPL = uncertainty.NA, uncertainty.NA
 
-    base = 'unknown'
+    base = "unknown"
 
     if version == 2:
         if tc == 29:

pyModeS/decoder/allcall.py

@@ -1,20 +1,7 @@
-# Copyright (C) 2018 Junzi Sun (TU Delft)
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
 """
 Decoding all call replies DF=11
+
+[To be implemented]
 """
 
 from __future__ import absolute_import, print_function, division

pyModeS/decoder/bds/__init__.py

@@ -23,12 +23,26 @@ import numpy as np
 
 from pyModeS.extra import aero
 from pyModeS.decoder import common
-from pyModeS.decoder.bds import bds05, bds06, bds08, bds09, \
-    bds10, bds17, bds20, bds30, bds40, bds44, bds50, bds53, bds60
+from pyModeS.decoder.bds import (
+    bds05,
+    bds06,
+    bds08,
+    bds09,
+    bds10,
+    bds17,
+    bds20,
+    bds30,
+    bds40,
+    bds44,
+    bds45,
+    bds50,
+    bds53,
+    bds60,
+)
 
 
 def is50or60(msg, spd_ref, trk_ref, alt_ref):
-    """Use reference ground speed and trk to determine BDS50 and DBS60
+    """Use reference ground speed and trk to determine BDS50 and DBS60.
 
     Args:
         msg (String): 28 bytes hexadecimal message string
@@ -38,7 +52,9 @@ def is50or60(msg, spd_ref, trk_ref, alt_ref):
 
     Returns:
         String or None: BDS version, or possible versions, or None if nothing matches.
+
     """
+
     def vxy(v, angle):
         vx = v * np.sin(np.radians(angle))
         vy = v * np.cos(np.radians(angle))
@@ -51,26 +67,26 @@ def is50or60(msg, spd_ref, trk_ref, alt_ref):
     v50 = bds50.gs50(msg)
 
     if h50 is None or v50 is None:
-        return 'BDS50,BDS60'
+        return "BDS50,BDS60"
 
     h60 = bds60.hdg60(msg)
     m60 = bds60.mach60(msg)
     i60 = bds60.ias60(msg)
 
     if h60 is None or (m60 is None and i60 is None):
-        return 'BDS50,BDS60'
+        return "BDS50,BDS60"
 
     m60 = np.nan if m60 is None else m60
     i60 = np.nan if i60 is None else i60
 
-    XY5 = vxy(v50*aero.kts, h50)
-    XY6m = vxy(aero.mach2tas(m60, alt_ref*aero.ft), h60)
-    XY6i = vxy(aero.cas2tas(i60*aero.kts, alt_ref*aero.ft), h60)
+    XY5 = vxy(v50 * aero.kts, h50)
+    XY6m = vxy(aero.mach2tas(m60, alt_ref * aero.ft), h60)
+    XY6i = vxy(aero.cas2tas(i60 * aero.kts, alt_ref * aero.ft), h60)
 
-    allbds = ['BDS50', 'BDS60', 'BDS60']
+    allbds = ["BDS50", "BDS60", "BDS60"]
 
     X = np.array([XY5, XY6m, XY6i])
-    Mu = np.array(vxy(spd_ref*aero.kts, trk_ref))
+    Mu = np.array(vxy(spd_ref * aero.kts, trk_ref))
 
     # compute Mahalanobis distance matrix
     # Cov = [[20**2, 0], [0, 20**2]]
@@ -80,51 +96,52 @@ def is50or60(msg, spd_ref, trk_ref, alt_ref):
     # since the covariance matrix is identity matrix,
     #     M-dist is same as eculidian distance
     try:
-        dist = np.linalg.norm(X-Mu, axis=1)
+        dist = np.linalg.norm(X - Mu, axis=1)
         BDS = allbds[np.nanargmin(dist)]
     except ValueError:
-        return 'BDS50,BDS60'
+        return "BDS50,BDS60"
 
     return BDS
 
 
-def infer(msg):
-    """Estimate the most likely BDS code of an message
+def infer(msg, mrar=False):
+    """Estimate the most likely BDS code of an message.
 
     Args:
         msg (String): 28 bytes hexadecimal message string
+        mrar (bool): Also infer MRAR (BDS 44) and MHR (BDS 45). Defaults to False.
 
     Returns:
         String or None: BDS version, or possible versions, or None if nothing matches.
-    """
 
+    """
     df = common.df(msg)
 
     if common.allzeros(msg):
-        return 'EMPTY'
+        return "EMPTY"
 
     # For ADS-B / Mode-S extended squitter
     if df == 17:
         tc = common.typecode(msg)
 
         if 1 <= tc <= 4:
-            return 'BDS08'  # indentification and category
+            return "BDS08"  # indentification and category
         if 5 <= tc <= 8:
-            return 'BDS06'  # surface movement
+            return "BDS06"  # surface movement
         if 9 <= tc <= 18:
-            return 'BDS05'  # airborne position, baro-alt
+            return "BDS05"  # airborne position, baro-alt
         if tc == 19:
-            return 'BDS09'  # airborne velocity
+            return "BDS09"  # airborne velocity
         if 20 <= tc <= 22:
-            return 'BDS05'  # airborne position, gnss-alt
+            return "BDS05"  # airborne position, gnss-alt
         if tc == 28:
-            return 'BDS61'  # aircraft status
+            return "BDS61"  # aircraft status
         if tc == 29:
-            return 'BDS62'  # target state and status
+            return "BDS62"  # target state and status
         if tc == 31:
-            return 'BDS65'  # operational status
+            return "BDS65"  # operational status
 
-    # For Comm-B replies, ELS + EHS only
+    # For Comm-B replies
     IS10 = bds10.is10(msg)
     IS17 = bds17.is17(msg)
     IS20 = bds20.is20(msg)
@@ -132,14 +149,31 @@ def infer(msg):
     IS40 = bds40.is40(msg)
     IS50 = bds50.is50(msg)
     IS60 = bds60.is60(msg)
+    IS44 = bds44.is44(msg)
+    IS45 = bds45.is45(msg)
 
-    allbds = np.array([
-        "BDS10", "BDS17", "BDS20", "BDS30", "BDS40", "BDS50", "BDS60"
-    ])
+    if mrar:
+        allbds = np.array(
+            [
+                "BDS10",
+                "BDS17",
+                "BDS20",
+                "BDS30",
+                "BDS40",
+                "BDS44",
+                "BDS45",
+                "BDS50",
+                "BDS60",
+            ]
+        )
+        mask = [IS10, IS17, IS20, IS30, IS40, IS44, IS45, IS50, IS60]
+    else:
+        allbds = np.array(
+            ["BDS10", "BDS17", "BDS20", "BDS30", "BDS40", "BDS50", "BDS60"]
+        )
+        mask = [IS10, IS17, IS20, IS30, IS40, IS50, IS60]
 
-    mask = [IS10, IS17, IS20, IS30, IS40, IS50, IS60]
-
-    bds = ','.join(sorted(allbds[mask]))
+    bds = ",".join(sorted(allbds[mask]))
 
     if len(bds) == 0:
         return None

pyModeS/decoder/bds/bds05.py

@@ -1,30 +1,14 @@
-# Copyright (C) 2018 Junzi Sun (TU Delft)
+# ------------------------------------------
+#   BDS 0,5
+#   ADS-B TC=9-18
+#   Airborn position
+# ------------------------------------------
 
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-
-"""
-------------------------------------------
-  BDS 0,5
-  ADS-B TC=9-18
-  Airborn position
-------------------------------------------
-"""
 
 from __future__ import absolute_import, print_function, division
 from pyModeS.decoder import common
 
+
 def airborne_position(msg0, msg1, t0, t1):
     """Decode airborn position from a pair of even and odd position message
 
@@ -41,6 +25,16 @@ def airborne_position(msg0, msg1, t0, t1):
     mb0 = common.hex2bin(msg0)[32:]
     mb1 = common.hex2bin(msg1)[32:]
 
+    oe0 = int(mb0[21])
+    oe1 = int(mb1[21])
+    if oe0 == 0 and oe1 == 1:
+        pass
+    elif oe0 == 1 and oe1 == 0:
+        mb0, mb1 = mb1, mb0
+        t0, t1 = t1, t0
+    else:
+        raise RuntimeError("Both even and odd CPR frames are required.")
+
     # 131072 is 2^17, since CPR lat and lon are 17 bits each.
     cprlat_even = common.bin2int(mb0[22:39]) / 131072.0
     cprlon_even = common.bin2int(mb0[39:56]) / 131072.0
@@ -67,17 +61,17 @@ def airborne_position(msg0, msg1, t0, t1):
         return None
 
     # compute ni, longitude index m, and longitude
-    if (t0 > t1):
+    if t0 > t1:
         lat = lat_even
         nl = common.cprNL(lat)
-        ni = max(common.cprNL(lat)- 0, 1)
-        m = common.floor(cprlon_even * (nl-1) - cprlon_odd * nl + 0.5)
+        ni = max(common.cprNL(lat) - 0, 1)
+        m = common.floor(cprlon_even * (nl - 1) - cprlon_odd * nl + 0.5)
         lon = (360.0 / ni) * (m % ni + cprlon_even)
     else:
         lat = lat_odd
         nl = common.cprNL(lat)
         ni = max(common.cprNL(lat) - 1, 1)
-        m = common.floor(cprlon_even * (nl-1) - cprlon_odd * nl + 0.5)
+        m = common.floor(cprlon_even * (nl - 1) - cprlon_odd * nl + 0.5)
         lon = (360.0 / ni) * (m % ni + cprlon_odd)
 
     if lon > 180:
@@ -101,17 +95,17 @@ def airborne_position_with_ref(msg, lat_ref, lon_ref):
         (float, float): (latitude, longitude) of the aircraft
     """
 
-
     mb = common.hex2bin(msg)[32:]
 
     cprlat = common.bin2int(mb[22:39]) / 131072.0
     cprlon = common.bin2int(mb[39:56]) / 131072.0
 
     i = int(mb[21])
-    d_lat = 360.0/59 if i else 360.0/60
+    d_lat = 360.0 / 59 if i else 360.0 / 60
 
-    j = common.floor(lat_ref / d_lat) \
-        + common.floor(0.5 + ((lat_ref % d_lat) / d_lat) - cprlat)
+    j = common.floor(lat_ref / d_lat) + common.floor(
+        0.5 + ((lat_ref % d_lat) / d_lat) - cprlat
+    )
 
     lat = d_lat * (j + cprlat)
 
@@ -122,8 +116,9 @@ def airborne_position_with_ref(msg, lat_ref, lon_ref):
     else:
         d_lon = 360.0
 
-    m = common.floor(lon_ref / d_lon) \
-        + common.floor(0.5 + ((lon_ref % d_lon) / d_lon) - cprlon)
+    m = common.floor(lon_ref / d_lon) + common.floor(
+        0.5 + ((lon_ref % d_lon) / d_lon) - cprlon
+    )
 
     lon = d_lon * (m + cprlon)
 
@@ -142,7 +137,7 @@ def altitude(msg):
 
     tc = common.typecode(msg)
 
-    if tc<9 or tc==19 or tc>22:
+    if tc < 9 or tc == 19 or tc > 22:
         raise RuntimeError("%s: Not a airborn position message" % msg)
 
     mb = common.hex2bin(msg)[32:]
@@ -151,7 +146,7 @@ def altitude(msg):
         # barometric altitude
         q = mb[15]
         if q:
-            n = common.bin2int(mb[8:15]+mb[16:20])
+            n = common.bin2int(mb[8:15] + mb[16:20])
             alt = n * 25 - 1000
         else:
             alt = None

pyModeS/decoder/bds/bds06.py

@@ -1,26 +1,8 @@
-# Copyright (C) 2018 Junzi Sun (TU Delft)
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-
-"""
-------------------------------------------
-  BDS 0,6
-  ADS-B TC=5-8
-  Surface position
-------------------------------------------
-"""
+# ------------------------------------------
+#   BDS 0,6
+#   ADS-B TC=5-8
+#   Surface position
+# ------------------------------------------
 
 from __future__ import absolute_import, print_function, division
 from pyModeS.decoder import common
@@ -75,22 +57,25 @@ def surface_position(msg0, msg1, t0, t1, lat_ref, lon_ref):
         return None
 
     # compute ni, longitude index m, and longitude
-    if (t0 > t1):
+    if t0 > t1:
         lat = lat_even
         nl = common.cprNL(lat_even)
         ni = max(common.cprNL(lat_even) - 0, 1)
-        m = common.floor(cprlon_even * (nl-1) - cprlon_odd * nl + 0.5)
+        m = common.floor(cprlon_even * (nl - 1) - cprlon_odd * nl + 0.5)
         lon = (90.0 / ni) * (m % ni + cprlon_even)
     else:
         lat = lat_odd
         nl = common.cprNL(lat_odd)
         ni = max(common.cprNL(lat_odd) - 1, 1)
-        m = common.floor(cprlon_even * (nl-1) - cprlon_odd * nl + 0.5)
+        m = common.floor(cprlon_even * (nl - 1) - cprlon_odd * nl + 0.5)
         lon = (90.0 / ni) * (m % ni + cprlon_odd)
 
     # four possible longitude solutions
     lons = [lon, lon + 90.0, lon + 180.0, lon + 270.0]
 
+    # make sure lons are between -180 and 180
+    lons = [(l + 180) % 360 - 180 for l in lons]
+
     # the closest solution to receiver is the correct one
     dls = [abs(lon_ref - l) for l in lons]
     imin = min(range(4), key=dls.__getitem__)
@@ -114,17 +99,17 @@ def surface_position_with_ref(msg, lat_ref, lon_ref):
         (float, float): (latitude, longitude) of the aircraft
     """
 
-
     mb = common.hex2bin(msg)[32:]
 
     cprlat = common.bin2int(mb[22:39]) / 131072.0
     cprlon = common.bin2int(mb[39:56]) / 131072.0
 
     i = int(mb[21])
-    d_lat = 90.0/59 if i else 90.0/60
+    d_lat = 90.0 / 59 if i else 90.0 / 60
 
-    j = common.floor(lat_ref / d_lat) \
-        + common.floor(0.5 + ((lat_ref % d_lat) / d_lat) - cprlat)
+    j = common.floor(lat_ref / d_lat) + common.floor(
+        0.5 + ((lat_ref % d_lat) / d_lat) - cprlat
+    )
 
     lat = d_lat * (j + cprlat)
 
@@ -135,23 +120,30 @@ def surface_position_with_ref(msg, lat_ref, lon_ref):
     else:
         d_lon = 90.0
 
-    m = common.floor(lon_ref / d_lon) \
-        + common.floor(0.5 + ((lon_ref % d_lon) / d_lon) - cprlon)
+    m = common.floor(lon_ref / d_lon) + common.floor(
+        0.5 + ((lon_ref % d_lon) / d_lon) - cprlon
+    )
 
     lon = d_lon * (m + cprlon)
 
     return round(lat, 5), round(lon, 5)
 
 
-def surface_velocity(msg):
+def surface_velocity(msg, rtn_sources=False):
     """Decode surface velocity from from a surface position message
     Args:
         msg (string): 28 bytes hexadecimal message string
+        rtn_source (boolean): If the function will return
+            the sources for direction of travel and vertical
+            rate. This will change the return value from a four
+            element array to a six element array.
 
     Returns:
-        (int, float, int, string): speed (kt), ground track (degree),
-            rate of climb/descend (ft/min), and speed type
-            ('GS' for ground speed, 'AS' for airspeed)
+        (int, float, int, string, string, None): speed (kt),
+            ground track (degree), None for rate of climb/descend (ft/min),
+            and speed type ('GS' for ground speed), direction source
+            ('true_north' for ground track / true north as reference),
+            None rate of climb/descent source.
     """
 
     if common.typecode(msg) < 5 or common.typecode(msg) > 8:
@@ -180,8 +172,11 @@ def surface_velocity(msg):
         movs = [2, 9, 13, 39, 94, 109, 124]
         kts = [0.125, 1, 2, 15, 70, 100, 175]
         i = next(m[0] for m in enumerate(movs) if m[1] > mov)
-        step = (kts[i] - kts[i-1]) * 1.0 / (movs[i]-movs[i-1])
-        spd = kts[i-1] + (mov-movs[i-1]) * step
+        step = (kts[i] - kts[i - 1]) * 1.0 / (movs[i] - movs[i - 1])
+        spd = kts[i - 1] + (mov - movs[i - 1]) * step
         spd = round(spd, 2)
 
-    return spd, trk, 0, 'GS'
+    if rtn_sources:
+        return spd, trk, 0, "GS", "true_north", None
+    else:
+        return spd, trk, 0, "GS"

pyModeS/decoder/bds/bds08.py

@@ -1,30 +1,13 @@
-# Copyright (C) 2018 Junzi Sun (TU Delft)
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-
-"""
-------------------------------------------
-  BDS 0,8
-  ADS-B TC=1-4
-  Aircraft identitification and category
-------------------------------------------
-"""
+# ------------------------------------------
+#   BDS 0,8
+#   ADS-B TC=1-4
+#   Aircraft identitification and category
+# ------------------------------------------
 
 from __future__ import absolute_import, print_function, division
 from pyModeS.decoder import common
 
+
 def category(msg):
     """Aircraft category number
 
@@ -39,7 +22,8 @@ def category(msg):
         raise RuntimeError("%s: Not a identification message" % msg)
 
     msgbin = common.hex2bin(msg)
-    return common.bin2int(msgbin[5:8])
+    mebin = msgbin[32:87]
+    return common.bin2int(mebin[5:8])
 
 
 def callsign(msg):
@@ -55,11 +39,11 @@ def callsign(msg):
     if common.typecode(msg) < 1 or common.typecode(msg) > 4:
         raise RuntimeError("%s: Not a identification message" % msg)
 
-    chars = '#ABCDEFGHIJKLMNOPQRSTUVWXYZ#####_###############0123456789######'
+    chars = "#ABCDEFGHIJKLMNOPQRSTUVWXYZ#####_###############0123456789######"
     msgbin = common.hex2bin(msg)
     csbin = msgbin[40:96]
 
-    cs = ''
+    cs = ""
     cs += chars[common.bin2int(csbin[0:6])]
     cs += chars[common.bin2int(csbin[6:12])]
     cs += chars[common.bin2int(csbin[12:18])]
@@ -71,5 +55,5 @@ def callsign(msg):
 
     # clean string, remove spaces and marks, if any.
     # cs = cs.replace('_', '')
-    cs = cs.replace('#', '')
+    cs = cs.replace("#", "")
     return cs

pyModeS/decoder/bds/bds09.py

@@ -1,42 +1,33 @@
-# Copyright (C) 2018 Junzi Sun (TU Delft)
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-
-"""
-------------------------------------------
-  BDS 0,9
-  ADS-B TC=19
-  Aircraft Airborn velocity
-------------------------------------------
-"""
+# ------------------------------------------
+#   BDS 0,9
+#   ADS-B TC=19
+#   Aircraft Airborn velocity
+# ------------------------------------------
 
 from __future__ import absolute_import, print_function, division
 from pyModeS.decoder import common
 import math
 
 
-def airborne_velocity(msg):
+def airborne_velocity(msg, rtn_sources=False):
     """Calculate the speed, track (or heading), and vertical rate
 
     Args:
         msg (string): 28 bytes hexadecimal message string
+        rtn_source (boolean): If the function will return
+            the sources for direction of travel and vertical
+            rate. This will change the return value from a four
+            element array to a six element array.
 
     Returns:
-        (int, float, int, string): speed (kt), ground track or heading (degree),
-            rate of climb/descend (ft/min), and speed type
-            ('GS' for ground speed, 'AS' for airspeed)
+        (int, float, int, string, string, string): speed (kt),
+            ground track or heading (degree),
+            rate of climb/descent (ft/min), speed type
+            ('GS' for ground speed, 'AS' for airspeed),
+            direction source ('true_north' for ground track / true north
+            as refrence, 'mag_north' for magnetic north as reference),
+            rate of climb/descent source ('Baro' for barometer, 'GNSS'
+            for GNSS constellation).
     """
 
     if common.typecode(msg) != 19:
@@ -50,27 +41,32 @@ def airborne_velocity(msg):
         return None
 
     if subtype in (1, 2):
-        v_ew_sign = -1 if mb[13]=='1' else 1
-        v_ew = common.bin2int(mb[14:24]) - 1       # east-west velocity
+        v_ew_sign = -1 if mb[13] == "1" else 1
+        v_ew = common.bin2int(mb[14:24]) - 1  # east-west velocity
+        if subtype == 2:  # Supersonic
+            v_ew *= 4
 
-        v_ns_sign = -1 if mb[24]=='1' else 1
-        v_ns = common.bin2int(mb[25:35]) - 1       # north-south velocity
+        v_ns_sign = -1 if mb[24] == "1" else 1
+        v_ns = common.bin2int(mb[25:35]) - 1  # north-south velocity
+        if subtype == 2:  # Supersonic
+            v_ns *= 4
 
         v_we = v_ew_sign * v_ew
         v_sn = v_ns_sign * v_ns
 
-        spd = math.sqrt(v_sn*v_sn + v_we*v_we)  # unit in kts
+        spd = math.sqrt(v_sn * v_sn + v_we * v_we)  # unit in kts
         spd = int(spd)
 
         trk = math.atan2(v_we, v_sn)
-        trk = math.degrees(trk)                 # convert to degrees
-        trk = trk if trk >= 0 else trk + 360    # no negative val
+        trk = math.degrees(trk)  # convert to degrees
+        trk = trk if trk >= 0 else trk + 360  # no negative val
 
-        tag = 'GS'
+        tag = "GS"
         trk_or_hdg = round(trk, 2)
+        dir_type = "true_north"
 
     else:
-        if mb[13] == '0':
+        if mb[13] == "0":
             hdg = None
         else:
             hdg = common.bin2int(mb[14:24]) / 1024.0 * 360.0
@@ -79,18 +75,27 @@ def airborne_velocity(msg):
         trk_or_hdg = hdg
 
         spd = common.bin2int(mb[25:35])
-        spd = None if spd==0 else spd-1
+        spd = None if spd == 0 else spd - 1
+        if subtype == 4:  # Supersonic
+            spd *= 4
 
-        if mb[24]=='0':
-            tag = 'IAS'
+        if mb[24] == "0":
+            tag = "IAS"
         else:
-            tag = 'TAS'
+            tag = "TAS"
 
-    vr_sign = -1 if mb[36]=='1' else 1
+        dir_type = "mag_north"
+
+    vr_source = "GNSS" if mb[35] == "0" else "Baro"
+    vr_sign = -1 if mb[36] == "1" else 1
     vr = common.bin2int(mb[37:46])
-    rocd = None if vr==0 else int(vr_sign*(vr-1)*64)
+    rocd = None if vr == 0 else int(vr_sign * (vr - 1) * 64)
+
+    if rtn_sources:
+        return spd, trk_or_hdg, rocd, tag, dir_type, vr_source
+    else:
+        return spd, trk_or_hdg, rocd, tag
 
-    return spd, trk_or_hdg, rocd, tag
 
 def altitude_diff(msg):
     """Decode the differece between GNSS and barometric altitude
@@ -114,4 +119,4 @@ def altitude_diff(msg):
     if value == 0 or value == 127:
         return None
     else:
-        return sign * (value - 1) * 25    # in ft.
+        return sign * (value - 1) * 25  # in ft.

pyModeS/decoder/bds/bds10.py

@@ -1,26 +1,12 @@
-# Copyright (C) 2018 Junzi Sun (TU Delft)
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-from __future__ import absolute_import, print_function, division
-from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros
-
 # ------------------------------------------
 # BDS 1,0
 # Data link capability report
 # ------------------------------------------
 
+from __future__ import absolute_import, print_function, division
+from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros
+
+
 def is10(msg):
     """Check if a message is likely to be BDS code 1,0
 
@@ -37,7 +23,7 @@ def is10(msg):
     d = hex2bin(data(msg))
 
     # first 8 bits must be 0x10
-    if d[0:8] != '00010000':
+    if d[0:8] != "00010000":
         return False
 
     # bit 10 to 14 are reserved
@@ -45,13 +31,14 @@ def is10(msg):
         return False
 
     # overlay capabilty conflict
-    if d[14] == '1' and bin2int(d[16:23]) < 5:
+    if d[14] == "1" and bin2int(d[16:23]) < 5:
         return False
-    if d[14] == '0' and bin2int(d[16:23]) > 4:
+    if d[14] == "0" and bin2int(d[16:23]) > 4:
         return False
 
     return True
 
+
 def ovc10(msg):
     """Return the overlay control capability
 

pyModeS/decoder/bds/bds17.py

@@ -1,28 +1,12 @@
-# Copyright (C) 2018 Junzi Sun (TU Delft)
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# ------------------------------------------
+#   BDS 1,7
+#   Common usage GICB capability report
+# ------------------------------------------
 
 
 from __future__ import absolute_import, print_function, division
 from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros
 
-"""
-------------------------------------------
-  BDS 1,7
-  Common usage GICB capability report
-------------------------------------------
-"""
 
 def is17(msg):
     """Check if a message is likely to be BDS code 1,7
@@ -50,11 +34,12 @@ def is17(msg):
     #     return False
 
     # at least you can respond who you are
-    if 'BDS20' not in caps:
+    if "BDS20" not in caps:
         return False
 
     return True
 
+
 def cap17(msg):
     """Extract capacities from BDS 1,7 message
 
@@ -64,12 +49,39 @@ def cap17(msg):
     Returns:
         list: list of suport BDS codes
     """
-    allbds = ['05', '06', '07', '08', '09', '0A', '20', '21', '40', '41',
-              '42', '43', '44', '45', '48', '50', '51', '52', '53', '54',
-              '55', '56', '5F', '60', 'NA', 'NA', 'E1', 'E2']
+    allbds = [
+        "05",
+        "06",
+        "07",
+        "08",
+        "09",
+        "0A",
+        "20",
+        "21",
+        "40",
+        "41",
+        "42",
+        "43",
+        "44",
+        "45",
+        "48",
+        "50",
+        "51",
+        "52",
+        "53",
+        "54",
+        "55",
+        "56",
+        "5F",
+        "60",
+        "NA",
+        "NA",
+        "E1",
+        "E2",
+    ]
 
     d = hex2bin(data(msg))
-    idx = [i for i, v in enumerate(d[:28]) if v=='1']
-    capacity = ['BDS'+allbds[i] for i in idx if allbds[i] is not 'NA']
+    idx = [i for i, v in enumerate(d[:28]) if v == "1"]
+    capacity = ["BDS" + allbds[i] for i in idx if allbds[i] is not "NA"]
 
     return capacity

pyModeS/decoder/bds/bds20.py

@@ -1,26 +1,12 @@
-# Copyright (C) 2018 Junzi Sun (TU Delft)
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-from __future__ import absolute_import, print_function, division
-from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros
-
 # ------------------------------------------
 # BDS 2,0
 # Aircraft identification
 # ------------------------------------------
 
+from __future__ import absolute_import, print_function, division
+from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros
+
+
 def is20(msg):
     """Check if a message is likely to be BDS code 2,0
 
@@ -36,12 +22,12 @@ def is20(msg):
 
     d = hex2bin(data(msg))
 
-    if d[0:8] != '00100000':
+    if d[0:8] != "00100000":
         return False
 
     cs = cs20(msg)
 
-    if '#' in cs:
+    if "#" in cs:
         return False
 
     return True
@@ -56,11 +42,11 @@ def cs20(msg):
     Returns:
         string: callsign, max. 8 chars
     """
-    chars = '#ABCDEFGHIJKLMNOPQRSTUVWXYZ#####_###############0123456789######'
+    chars = "#ABCDEFGHIJKLMNOPQRSTUVWXYZ#####_###############0123456789######"
 
     d = hex2bin(data(msg))
 
-    cs = ''
+    cs = ""
     cs += chars[bin2int(d[8:14])]
     cs += chars[bin2int(d[14:20])]
     cs += chars[bin2int(d[20:26])]

pyModeS/decoder/bds/bds30.py

@@ -1,26 +1,12 @@
-# Copyright (C) 2018 Junzi Sun (TU Delft)
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-from __future__ import absolute_import, print_function, division
-from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros
-
 # ------------------------------------------
 # BDS 3,0
 # ACAS active resolution advisory
 # ------------------------------------------
 
+from __future__ import absolute_import, print_function, division
+from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros
+
+
 def is30(msg):
     """Check if a message is likely to be BDS code 2,0
 
@@ -36,11 +22,11 @@ def is30(msg):
 
     d = hex2bin(data(msg))
 
-    if d[0:8] != '00110000':
+    if d[0:8] != "00110000":
         return False
 
     # threat type 3 not assigned
-    if d[28:30] == '11':
+    if d[28:30] == "11":
         return False
 
     # reserved for ACAS III, in far future

pyModeS/decoder/bds/bds40.py

@@ -1,27 +1,13 @@
-# Copyright (C) 2018 Junzi Sun (TU Delft)
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-
-from __future__ import absolute_import, print_function, division
-from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros, wrongstatus
-
 # ------------------------------------------
 # BDS 4,0
 # Selected vertical intention
 # ------------------------------------------
 
+from __future__ import absolute_import, print_function, division
+import warnings
+from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros, wrongstatus
+
+
 def is40(msg):
     """Check if a message is likely to be BDS code 4,0
 
@@ -47,10 +33,10 @@ def is40(msg):
 
     if wrongstatus(d, 27, 28, 39):
         return False
-    
+
     if wrongstatus(d, 48, 49, 51):
         return False
-    
+
     if wrongstatus(d, 54, 55, 56):
         return False
 
@@ -65,7 +51,7 @@ def is40(msg):
     return True
 
 
-def alt40mcp(msg):
+def selalt40mcp(msg):
     """Selected altitude, MCP/FCU
 
     Args:
@@ -76,14 +62,14 @@ def alt40mcp(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[0] == '0':
+    if d[0] == "0":
         return None
 
-    alt = bin2int(d[1:13]) * 16    # ft
+    alt = bin2int(d[1:13]) * 16  # ft
     return alt
 
 
-def alt40fms(msg):
+def selalt40fms(msg):
     """Selected altitude, FMS
 
     Args:
@@ -94,10 +80,10 @@ def alt40fms(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[13] == '0':
+    if d[13] == "0":
         return None
 
-    alt = bin2int(d[14:26]) * 16    # ft
+    alt = bin2int(d[14:26]) * 16  # ft
     return alt
 
 
@@ -112,8 +98,24 @@ def p40baro(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[26] == '0':
+    if d[26] == "0":
         return None
 
-    p = bin2int(d[27:39]) * 0.1 + 800    # millibar
+    p = bin2int(d[27:39]) * 0.1 + 800  # millibar
     return p
+
+
+def alt40mcp(msg):
+    warnings.warn(
+        "alt40mcp() has been renamed to selalt40mcp(). It will be removed in the future.",
+        DeprecationWarning,
+    )
+    return selalt40mcp(msg)
+
+
+def alt40fms(msg):
+    warnings.warn(
+        "alt40fms() has been renamed to selalt40fms(). It will be removed in the future.",
+        DeprecationWarning,
+    )
+    return selalt40mcp(msg)

pyModeS/decoder/bds/bds44.py

@@ -1,218 +1,162 @@
-# Copyright (C) 2018 Junzi Sun (TU Delft)
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-from __future__ import absolute_import, print_function, division
-from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros, wrongstatus
-
 # ------------------------------------------
 # BDS 4,4
 # Meteorological routine air report
 # ------------------------------------------
 
-def is44(msg, rev=False):
-    """Check if a message is likely to be BDS code 4,4
+from __future__ import absolute_import, print_function, division
+from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros, wrongstatus
+
+
+def is44(msg):
+    """Check if a message is likely to be BDS code 4,4.
+
     Meteorological routine air report
 
     Args:
         msg (String): 28 bytes hexadecimal message string
-        rev (bool): using revised version
 
     Returns:
         bool: True or False
-    """
 
+    """
     if allzeros(msg):
         return False
 
     d = hex2bin(data(msg))
 
-
-    if not rev:
-        # status bit 5, 35, 47, 50
-        if wrongstatus(d, 5, 6, 23):
-            return False
-
-        if wrongstatus(d, 35, 36, 46):
-            return False
-
-        if wrongstatus(d, 47, 48, 49):
-            return False
-
-        if wrongstatus(d, 50, 51, 56):
-            return False
-
-        # Bits 1-4 indicate source, values > 4 reserved and should not occur
-        if bin2int(d[0:4]) > 4:
-            return False
-    else:
-        # status bit 5, 15, 24, 36, 49
-        if wrongstatus(d, 5, 6, 14):
-            return False
-
-        if wrongstatus(d, 15, 16, 23):
-            return False
-
-        if wrongstatus(d, 24, 25, 35):
-            return False
-
-        if wrongstatus(d, 36, 37, 47):
-            return False
-
-        if wrongstatus(d, 49, 50, 56):
-            return False
-
-        # Bits 1-4 are reserved and should be zero
-        if bin2int(d[0:4]) != 0:
-            return False
-
-    vw = wind44(msg, rev=rev)
-    if vw is not None and vw[0] > 250:
+    # status bit 5, 35, 47, 50
+    if wrongstatus(d, 5, 6, 23):
         return False
 
-    if temp44(msg):
-        if temp44(msg) > 60 or temp44(msg) < -80:
-            return False
+    if wrongstatus(d, 35, 36, 46):
+        return False
 
-    elif temp44(msg) == 0:
+    if wrongstatus(d, 47, 48, 49):
+        return False
+
+    if wrongstatus(d, 50, 51, 56):
+        return False
+
+    # Bits 1-4 indicate source, values > 4 reserved and should not occur
+    if bin2int(d[0:4]) > 4:
+        return False
+
+    vw, dw = wind44(msg)
+    if vw is not None and vw > 250:
+        return False
+
+    temp, temp2 = temp44(msg)
+    if min(temp, temp2) > 60 or max(temp, temp2) < -80:
         return False
 
     return True
 
 
-def wind44(msg, rev=False):
-    """reported wind speed and direction
+def wind44(msg):
+    """Wind speed and direction.
 
     Args:
-        msg (String): 28 bytes hexadecimal message (BDS44) string
-        rev (bool): using revised version
+        msg (String): 28 bytes hexadecimal message string
 
     Returns:
         (int, float): speed (kt), direction (degree)
+
     """
     d = hex2bin(data(msg))
 
-    if not rev:
-        status = int(d[4])
-        if not status:
-            return None
+    status = int(d[4])
+    if not status:
+        return None, None
 
-        speed = bin2int(d[5:14])   # knots
-        direction = bin2int(d[14:23]) * 180.0 / 256.0  # degree
-
-    else:
-        spd_status = int(d[4])
-        dir_status = int(d[14])
-
-        if (not spd_status) or (not dir_status):
-            return None
-
-        speed = bin2int(d[5:14])   # knots
-        direction = bin2int(d[15:23]) * 180.0 / 128.0  # degree
+    speed = bin2int(d[5:14])  # knots
+    direction = bin2int(d[14:23]) * 180.0 / 256.0  # degree
 
     return round(speed, 0), round(direction, 1)
 
 
-def temp44(msg, rev=False):
-    """reported air temperature
+def temp44(msg):
+    """Static air temperature.
 
     Args:
-        msg (String): 28 bytes hexadecimal message (BDS44) string
-        rev (bool): using revised version
+        msg (String): 28 bytes hexadecimal message string
 
     Returns:
-        float: tmeperature in Celsius degree
+        float, float: temperature and alternative temperature in Celsius degree.
+            Note: Two values returns due to what seems to be an inconsistancy
+            error in ICAO 9871 (2008) Appendix A-67.
+
     """
     d = hex2bin(data(msg))
 
-    if not rev:
-        # if d[22] == '0':
-        #     return None
+    sign = int(d[23])
+    value = bin2int(d[24:34])
 
-        sign = int(d[23])
-        value = bin2int(d[24:34])
+    if sign:
+        value = value - 1024
 
-        if sign:
-            value = value - 1024
+    temp = value * 0.25  # celsius
+    temp = round(temp, 2)
 
-        temp = value * 0.125   # celsius
-        temp = round(temp, 1)
-    else:
-        # if d[23] == '0':
-        #     return None
+    temp_alternative = value * 0.125  # celsius
+    temp_alternative = round(temp_alternative, 3)
 
-        sign = int(d[24])
-        value = bin2int(d[25:35])
-
-        if sign:
-            value = value - 1024
-
-        temp = value * 0.125   # celsius
-        temp = round(temp, 1)
-
-    return temp
+    return temp, temp_alternative
 
 
-def p44(msg, rev=False):
-    """reported average static pressure
+def p44(msg):
+    """Static pressure.
 
     Args:
-        msg (String): 28 bytes hexadecimal message (BDS44) string
-        rev (bool): using revised version
+        msg (String): 28 bytes hexadecimal message string
 
     Returns:
         int: static pressure in hPa
+
     """
     d = hex2bin(data(msg))
 
-    if not rev:
-        if d[34] == '0':
-            return None
+    if d[34] == "0":
+        return None
 
-        p = bin2int(d[35:46])    # hPa
-
-    else:
-        if d[35] == '0':
-            return None
-
-        p = bin2int(d[36:47])    # hPa
+    p = bin2int(d[35:46])  # hPa
 
     return p
 
 
-def hum44(msg, rev=False):
-    """reported humidity
+def hum44(msg):
+    """humidity
 
     Args:
-        msg (String): 28 bytes hexadecimal message (BDS44) string
-        rev (bool): using revised version
+        msg (String): 28 bytes hexadecimal message string
 
     Returns:
         float: percentage of humidity, [0 - 100] %
     """
     d = hex2bin(data(msg))
 
-    if not rev:
-        if d[49] == '0':
-            return None
+    if d[49] == "0":
+        return None
 
-        hm = bin2int(d[50:56]) * 100.0 / 64    # %
-
-    else:
-        if d[48] == '0':
-            return None
-
-        hm = bin2int(d[49:56])    # %
+    hm = bin2int(d[50:56]) * 100.0 / 64  # %
 
     return round(hm, 1)
+
+
+def turb44(msg):
+    """Turblence.
+
+    Args:
+        msg (String): 28 bytes hexadecimal message string
+
+    Returns:
+        int: turbulence level. 0=NIL, 1=Light, 2=Moderate, 3=Severe
+
+    """
+    d = hex2bin(data(msg))
+
+    if d[46] == "0":
+        return None
+
+    turb = bin2int(d[47:49])
+
+    return turb

pyModeS/decoder/bds/bds45.py

@@ -0,0 +1,209 @@
+# ------------------------------------------
+# BDS 4,5
+# Meteorological hazard report
+# ------------------------------------------
+
+from __future__ import absolute_import, print_function, division
+from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros, wrongstatus
+
+
+def is45(msg):
+    """Check if a message is likely to be BDS code 4,5.
+
+    Meteorological hazard report
+
+    Args:
+        msg (String): 28 bytes hexadecimal message string
+
+    Returns:
+        bool: True or False
+
+    """
+    if allzeros(msg):
+        return False
+
+    d = hex2bin(data(msg))
+
+    # status bit 1, 4, 7, 10, 13, 16, 27, 39
+    if wrongstatus(d, 1, 2, 3):
+        return False
+
+    if wrongstatus(d, 4, 5, 6):
+        return False
+
+    if wrongstatus(d, 7, 8, 9):
+        return False
+
+    if wrongstatus(d, 10, 11, 12):
+        return False
+
+    if wrongstatus(d, 13, 14, 15):
+        return False
+
+    if wrongstatus(d, 16, 17, 26):
+        return False
+
+    if wrongstatus(d, 27, 28, 38):
+        return False
+
+    if wrongstatus(d, 39, 40, 51):
+        return False
+
+    # reserved
+    if bin2int(d[51:56]) != 0:
+        return False
+
+    temp = temp45(msg)
+    if temp:
+        if temp > 60 or temp < -80:
+            return False
+
+    return True
+
+
+def turb45(msg):
+    """Turbulence.
+
+    Args:
+        msg (String): 28 bytes hexadecimal message string
+
+    Returns:
+        int: Turbulence level. 0=NIL, 1=Light, 2=Moderate, 3=Severe
+
+    """
+    d = hex2bin(data(msg))
+    if d[0] == "0":
+        return None
+
+    turb = bin2int(d[1:3])
+    return turb
+
+
+def ws45(msg):
+    """Wind shear.
+
+    Args:
+        msg (String): 28 bytes hexadecimal message string
+
+    Returns:
+        int: Wind shear level. 0=NIL, 1=Light, 2=Moderate, 3=Severe
+
+    """
+    d = hex2bin(data(msg))
+    if d[3] == "0":
+        return None
+
+    ws = bin2int(d[4:6])
+    return ws
+
+
+def mb45(msg):
+    """Microburst.
+
+    Args:
+        msg (String): 28 bytes hexadecimal message string
+
+    Returns:
+        int: Microburst level. 0=NIL, 1=Light, 2=Moderate, 3=Severe
+
+    """
+    d = hex2bin(data(msg))
+    if d[6] == "0":
+        return None
+
+    mb = bin2int(d[7:9])
+    return mb
+
+
+def ic45(msg):
+    """Icing.
+
+    Args:
+        msg (String): 28 bytes hexadecimal message string
+
+    Returns:
+        int: Icing level. 0=NIL, 1=Light, 2=Moderate, 3=Severe
+
+    """
+    d = hex2bin(data(msg))
+    if d[9] == "0":
+        return None
+
+    ic = bin2int(d[10:12])
+    return ic
+
+
+def wv45(msg):
+    """Wake vortex.
+
+    Args:
+        msg (String): 28 bytes hexadecimal message string
+
+    Returns:
+        int: Wake vortex level. 0=NIL, 1=Light, 2=Moderate, 3=Severe
+
+    """
+    d = hex2bin(data(msg))
+    if d[12] == "0":
+        return None
+
+    ws = bin2int(d[13:15])
+    return ws
+
+
+def temp45(msg):
+    """Static air temperature.
+
+    Args:
+        msg (String): 28 bytes hexadecimal message string
+
+    Returns:
+        float: tmeperature in Celsius degree
+
+    """
+    d = hex2bin(data(msg))
+
+    sign = int(d[16])
+    value = bin2int(d[17:26])
+
+    if sign:
+        value = value - 512
+
+    temp = value * 0.25  # celsius
+    temp = round(temp, 1)
+
+    return temp
+
+
+def p45(msg):
+    """Average static pressure.
+
+    Args:
+        msg (String): 28 bytes hexadecimal message string
+
+    Returns:
+        int: static pressure in hPa
+
+    """
+    d = hex2bin(data(msg))
+    if d[26] == "0":
+        return None
+    p = bin2int(d[27:38])  # hPa
+    return p
+
+
+def rh45(msg):
+    """Radio height.
+
+    Args:
+        msg (String): 28 bytes hexadecimal message string
+
+    Returns:
+        int: radio height in ft
+
+    """
+    d = hex2bin(data(msg))
+    if d[38] == "0":
+        return None
+    rh = bin2int(d[39:51]) * 16
+    return rh

pyModeS/decoder/bds/bds50.py

@@ -1,26 +1,12 @@
-# Copyright (C) 2018 Junzi Sun (TU Delft)
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-from __future__ import absolute_import, print_function, division
-from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros, wrongstatus
-
 # ------------------------------------------
 # BDS 5,0
 # Track and turn report
 # ------------------------------------------
 
+from __future__ import absolute_import, print_function, division
+from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros, wrongstatus
+
+
 def is50(msg):
     """Check if a message is likely to be BDS code 5,0
     (Track and turn report)
@@ -84,16 +70,16 @@ def roll50(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[0] == '0':
+    if d[0] == "0":
         return None
 
-    sign = int(d[1])    # 1 -> left wing down
+    sign = int(d[1])  # 1 -> left wing down
     value = bin2int(d[2:11])
 
     if sign:
         value = value - 512
 
-    angle = value * 45.0 / 256.0    # degree
+    angle = value * 45.0 / 256.0  # degree
     return round(angle, 1)
 
 
@@ -108,10 +94,10 @@ def trk50(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[11] == '0':
+    if d[11] == "0":
         return None
 
-    sign = int(d[12])   # 1 -> west
+    sign = int(d[12])  # 1 -> west
     value = bin2int(d[13:23])
 
     if sign:
@@ -137,10 +123,10 @@ def gs50(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[23] == '0':
+    if d[23] == "0":
         return None
 
-    spd = bin2int(d[24:34]) * 2    # kts
+    spd = bin2int(d[24:34]) * 2  # kts
     return spd
 
 
@@ -155,18 +141,18 @@ def rtrk50(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[34] == '0':
+    if d[34] == "0":
         return None
 
     if d[36:45] == "111111111":
         return None
 
-    sign = int(d[35])    # 1 -> negative value, two's complement
+    sign = int(d[35])  # 1 -> negative value, two's complement
     value = bin2int(d[36:45])
     if sign:
         value = value - 512
 
-    angle = value * 8.0 / 256.0    # degree / sec
+    angle = value * 8.0 / 256.0  # degree / sec
     return round(angle, 3)
 
 
@@ -181,8 +167,8 @@ def tas50(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[45] == '0':
+    if d[45] == "0":
         return None
 
-    tas = bin2int(d[46:56]) * 2   # kts
+    tas = bin2int(d[46:56]) * 2  # kts
     return tas

pyModeS/decoder/bds/bds53.py

@@ -1,26 +1,12 @@
-# Copyright (C) 2018 Junzi Sun (TU Delft)
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-from __future__ import absolute_import, print_function, division
-from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros, wrongstatus
-
 # ------------------------------------------
 # BDS 5,3
 # Air-referenced state vector
 # ------------------------------------------
 
+from __future__ import absolute_import, print_function, division
+from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros, wrongstatus
+
+
 def is53(msg):
     """Check if a message is likely to be BDS code 5,3
     (Air-referenced state vector)
@@ -84,16 +70,16 @@ def hdg53(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[0] == '0':
+    if d[0] == "0":
         return None
 
-    sign = int(d[1])    # 1 -> west
+    sign = int(d[1])  # 1 -> west
     value = bin2int(d[2:12])
 
     if sign:
         value = value - 1024
 
-    hdg = value * 90.0 / 512.0   # degree
+    hdg = value * 90.0 / 512.0  # degree
 
     # convert from [-180, 180] to [0, 360]
     if hdg < 0:
@@ -113,10 +99,10 @@ def ias53(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[12] == '0':
+    if d[12] == "0":
         return None
 
-    ias = bin2int(d[13:23])    # knots
+    ias = bin2int(d[13:23])  # knots
     return ias
 
 
@@ -131,7 +117,7 @@ def mach53(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[23] == '0':
+    if d[23] == "0":
         return None
 
     mach = bin2int(d[24:33]) * 0.008
@@ -149,12 +135,13 @@ def tas53(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[33] == '0':
+    if d[33] == "0":
         return None
 
-    tas = bin2int(d[34:46]) * 0.5   # kts
+    tas = bin2int(d[34:46]) * 0.5  # kts
     return round(tas, 1)
 
+
 def vr53(msg):
     """Vertical rate
 
@@ -166,16 +153,16 @@ def vr53(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[46] == '0':
+    if d[46] == "0":
         return None
 
-    sign = int(d[47])    # 1 -> negative value, two's complement
+    sign = int(d[47])  # 1 -> negative value, two's complement
     value = bin2int(d[48:56])
 
     if value == 0 or value == 255:  # all zeros or all ones
         return 0
 
     value = value - 256 if sign else value
-    roc = value * 64     # feet/min
+    roc = value * 64  # feet/min
 
     return roc

pyModeS/decoder/bds/bds60.py

@@ -1,26 +1,12 @@
-# Copyright (C) 2018 Junzi Sun (TU Delft)
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-from __future__ import absolute_import, print_function, division
-from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros, wrongstatus
-
 # ------------------------------------------
 # BDS 6,0
 # Heading and speed report
 # ------------------------------------------
 
+from __future__ import absolute_import, print_function, division
+from pyModeS.decoder.common import hex2bin, bin2int, data, allzeros, wrongstatus
+
+
 def is60(msg):
     """Check if a message is likely to be BDS code 6,0
 
@@ -83,10 +69,10 @@ def hdg60(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[0] == '0':
+    if d[0] == "0":
         return None
 
-    sign = int(d[1])    # 1 -> west
+    sign = int(d[1])  # 1 -> west
     value = bin2int(d[2:12])
 
     if sign:
@@ -112,10 +98,10 @@ def ias60(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[12] == '0':
+    if d[12] == "0":
         return None
 
-    ias = bin2int(d[13:23])    # kts
+    ias = bin2int(d[13:23])  # kts
     return ias
 
 
@@ -130,7 +116,7 @@ def mach60(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[23] == '0':
+    if d[23] == "0":
         return None
 
     mach = bin2int(d[24:34]) * 2.048 / 512.0
@@ -148,10 +134,10 @@ def vr60baro(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[34] == '0':
+    if d[34] == "0":
         return None
 
-    sign = int(d[35])    # 1 -> negative value, two's complement
+    sign = int(d[35])  # 1 -> negative value, two's complement
     value = bin2int(d[36:45])
 
     if value == 0 or value == 511:  # all zeros or all ones
@@ -159,7 +145,7 @@ def vr60baro(msg):
 
     value = value - 512 if sign else value
 
-    roc = value * 32   # feet/min
+    roc = value * 32  # feet/min
     return roc
 
 
@@ -174,10 +160,10 @@ def vr60ins(msg):
     """
     d = hex2bin(data(msg))
 
-    if d[45] == '0':
+    if d[45] == "0":
         return None
 
-    sign = int(d[46])    # 1 -> negative value, two's complement
+    sign = int(d[46])  # 1 -> negative value, two's complement
     value = bin2int(d[47:56])
 
     if value == 0 or value == 511:  # all zeros or all ones
@@ -185,5 +171,5 @@ def vr60ins(msg):
 
     value = value - 512 if sign else value
 
-    roc = value * 32   # feet/min
+    roc = value * 32  # feet/min
     return roc

pyModeS/decoder/c_common.pxd

@@ -0,0 +1,23 @@
+# cython: language_level=3
+
+cdef int char_to_int(unsigned char binstr)
+cdef unsigned char int_to_char(unsigned char i)
+
+cpdef str hex2bin(str hexstr)
+cpdef long bin2int(str binstr)
+cpdef long hex2int(str binstr)
+
+cpdef unsigned char df(str msg)
+cpdef long crc(str msg, bint encode=*)
+
+cpdef long floor(double x)
+cpdef str icao(str msg)
+cpdef bint is_icao_assigned(str icao)
+
+cpdef int typecode(str msg)
+cpdef int cprNL(double lat)
+cpdef str idcode(str msg)
+cpdef int altcode(str msg)
+
+cdef str data(str msg)
+cpdef bint allzeros(str msg)

pyModeS/decoder/c_common.pyx

@@ -0,0 +1,431 @@
+# cython: language_level=3
+
+cimport cython
+from cpython cimport array
+from cpython.bytes cimport PyBytes_GET_SIZE
+from cpython.bytearray cimport PyByteArray_GET_SIZE
+
+from libc.math cimport cos, acos, fabs, M_PI as pi, floor as c_floor
+
+
+cdef int char_to_int(unsigned char binstr):
+    if 48 <= binstr <= 57:  # 0 to 9
+        return binstr - 48
+    if 97 <= binstr <= 102: # a to f
+        return binstr - 97 + 10
+    if 65 <= binstr <= 70: # A to F
+        return binstr - 65 + 10
+    return 0
+
+cdef unsigned char int_to_char(unsigned char i):
+    if i < 10:
+        return 48 + i  # "0" + i
+    return 97 - 10 + i  # "a" - 10 + i
+
+@cython.boundscheck(False)
+@cython.overflowcheck(False)
+cpdef str hex2bin(str hexstr):
+    """Convert a hexdecimal string to binary string, with zero fillings."""
+    # num_of_bits = len(hexstr) * 4
+    cdef hexbytes = bytes(hexstr.encode())
+    cdef Py_ssize_t len_hexstr = PyBytes_GET_SIZE(hexbytes)
+    # binstr = bin(int(hexbytes, 16))[2:].zfill(int(num_of_bits))
+    cdef bytearray _binstr = bytearray(4 * len_hexstr)
+    cdef unsigned char[:] binstr = _binstr
+    cdef unsigned char int_
+    cdef Py_ssize_t i
+    for i in range(len_hexstr):
+        int_ = char_to_int(hexbytes[i])
+        binstr[4*i] = int_to_char((int_  >> 3) & 1)
+        binstr[4*i+1] = int_to_char((int_ >> 2) & 1)
+        binstr[4*i+2] = int_to_char((int_ >> 1) & 1)
+        binstr[4*i+3] = int_to_char((int_) & 1)
+    return _binstr.decode()
+
+@cython.boundscheck(False)
+cpdef long bin2int(str binstr):
+    """Convert a binary string to integer."""
+    # return int(binstr, 2)
+    cdef bytearray binbytes = bytearray(binstr.encode())
+    cdef Py_ssize_t len_ = PyByteArray_GET_SIZE(binbytes)
+    cdef long cumul = 0
+    cdef unsigned char[:] v_binstr = binbytes
+    for i in range(len_):
+        cumul = 2*cumul + char_to_int(v_binstr[i])
+    return cumul
+
+@cython.boundscheck(False)
+cpdef long hex2int(str hexstr):
+    """Convert a binary string to integer."""
+    # return int(hexstr, 2)
+    cdef bytearray binbytes = bytearray(hexstr.encode())
+    cdef Py_ssize_t len_ = PyByteArray_GET_SIZE(binbytes)
+    cdef long cumul = 0
+    cdef unsigned char[:] v_hexstr = binbytes
+    for i in range(len_):
+        cumul = 16*cumul + char_to_int(v_hexstr[i])
+    return cumul
+
+@cython.boundscheck(False)
+cpdef unsigned char df(str msg):
+    """Decode Downlink Format vaule, bits 1 to 5."""
+    cdef str dfbin = hex2bin(msg[:2])
+    # return min(bin2int(dfbin[0:5]), 24)
+    cdef long df = bin2int(dfbin[0:5])
+    if df > 24:
+        return 24
+    return df
+
+# the CRC generator
+# G = [int("11111111", 2), int("11111010", 2), int("00000100", 2), int("10000000", 2)]
+cdef array.array _G = array.array('l', [0b11111111, 0b11111010, 0b00000100, 0b10000000])
+
+@cython.boundscheck(False)
+@cython.wraparound(False)
+cpdef long crc(str msg, bint encode=False):
+    """Mode-S Cyclic Redundancy Check.
+
+    Detect if bit error occurs in the Mode-S message. When encode option is on,
+    the checksum is generated.
+
+    Args:
+        msg (string): 28 bytes hexadecimal message string
+        encode (bool): True to encode the date only and return the checksum
+    Returns:
+        int: message checksum, or partity bits (encoder)
+
+    """
+    # the CRC generator
+    # G = [int("11111111", 2), int("11111010", 2), int("00000100", 2), int("10000000", 2)]
+    # cdef array.array _G = array.array('l', [0b11111111, 0b11111010, 0b00000100, 0b10000000])
+    cdef long[4] G = _G
+
+    # msgbin_split = wrap(msgbin, 8)
+    # mbytes = list(map(bin2int, msgbin_split))
+    cdef bytearray _msgbin = bytearray(hex2bin(msg).encode())
+    cdef unsigned char[:] msgbin = _msgbin
+
+    cdef Py_ssize_t len_msgbin = PyByteArray_GET_SIZE(_msgbin)
+    cdef Py_ssize_t len_mbytes = len_msgbin // 8
+    cdef Py_ssize_t i
+
+    if encode:
+        for i in range(len_msgbin - 24, len_msgbin):
+            msgbin[i] = 0
+
+    cdef array.array _mbytes = array.array(
+        'l', [bin2int(_msgbin[8*i:8*i+8].decode()) for i in range(len_mbytes)]
+    )
+
+    cdef long[:] mbytes = _mbytes
+
+    cdef long bits, mask
+    cdef Py_ssize_t ibyte, ibit
+
+    for ibyte in range(len_mbytes - 3):
+        for ibit in range(8):
+            mask = 0x80 >> ibit
+            bits = mbytes[ibyte] & mask
+
+            if bits > 0:
+                mbytes[ibyte] = mbytes[ibyte] ^ (G[0] >> ibit)
+                mbytes[ibyte + 1] = mbytes[ibyte + 1] ^ (
+                    0xFF & ((G[0] << 8 - ibit) | (G[1] >> ibit))
+                )
+                mbytes[ibyte + 2] = mbytes[ibyte + 2] ^ (
+                    0xFF & ((G[1] << 8 - ibit) | (G[2] >> ibit))
+                )
+                mbytes[ibyte + 3] = mbytes[ibyte + 3] ^ (
+                    0xFF & ((G[2] << 8 - ibit) | (G[3] >> ibit))
+                )
+
+    cdef long result = (mbytes[len_mbytes-3] << 16) | (mbytes[len_mbytes-2] << 8) | mbytes[len_mbytes-1]
+
+    return result
+
+
+
+cpdef long floor(double x):
+    """Mode-S floor function.
+
+    Defined as the greatest integer value k, such that k <= x
+    For example: floor(3.6) = 3 and floor(-3.6) = -4
+
+    """
+    return <long> c_floor(x)
+
+cpdef str icao(str msg):
+    """Calculate the ICAO address from an Mode-S message.
+
+    Applicable only with DF4, DF5, DF20, DF21 messages.
+
+    Args:
+        msg (String): 28 bytes hexadecimal message string
+
+    Returns:
+        String: ICAO address in 6 bytes hexadecimal string
+
+    """
+    cdef unsigned char DF = df(msg)
+    cdef long c0, c1
+
+    if DF in (11, 17, 18):
+        addr = msg[2:8]
+    elif DF in (0, 4, 5, 16, 20, 21):
+        c0 = crc(msg, encode=True)
+        c1 = hex2int(msg[-6:])
+        addr = "%06X" % (c0 ^ c1)
+    else:
+        addr = None
+
+    return addr
+
+
+cpdef bint is_icao_assigned(str icao):
+    """Check whether the ICAO address is assigned (Annex 10, Vol 3)."""
+    if (icao is None) or (not isinstance(icao, str)) or (len(icao) != 6):
+        return False
+
+    cdef long icaoint = hex2int(icao)
+
+    if 0x200000 < icaoint < 0x27FFFF:
+        return False  # AFI
+    if 0x280000 < icaoint < 0x28FFFF:
+        return False  # SAM
+    if 0x500000 < icaoint < 0x5FFFFF:
+        return False  # EUR, NAT
+    if 0x600000 < icaoint < 0x67FFFF:
+        return False  # MID
+    if 0x680000 < icaoint < 0x6F0000:
+        return False  # ASIA
+    if 0x900000 < icaoint < 0x9FFFFF:
+        return False  # NAM, PAC
+    if 0xB00000 < icaoint < 0xBFFFFF:
+        return False  # CAR
+    if 0xD00000 < icaoint < 0xDFFFFF:
+        return False  # future
+    if 0xF00000 < icaoint < 0xFFFFFF:
+        return False  # future
+
+    return True
+
+@cython.boundscheck(False)
+@cython.wraparound(False)
+cpdef int typecode(str msg):
+    """Type code of ADS-B message
+
+    Args:
+        msg (string): 28 bytes hexadecimal message string
+
+    Returns:
+        int: type code number
+    """
+    if df(msg) not in (17, 18):
+        return -1
+        # return None
+
+    cdef str tcbin = hex2bin(msg[8:10])
+    return bin2int(tcbin[0:5])
+
+@cython.cdivision(True)
+cpdef int cprNL(double lat):
+    """NL() function in CPR decoding."""
+
+    if lat == 0:
+        return 59
+
+    if lat == 87 or lat == -87:
+        return 2
+
+    if lat > 87 or lat < -87:
+        return 1
+
+    cdef int nz = 15
+    cdef double a = 1 - cos(pi / (2 * nz))
+    cdef double b = cos(pi / 180.0 * fabs(lat)) ** 2
+    cdef double nl = 2 * pi / (acos(1 - a / b))
+    NL = floor(nl)
+    return NL
+
+@cython.boundscheck(False)
+@cython.wraparound(False)
+cpdef str idcode(str msg):
+    """Compute identity (squawk code).
+
+    Applicable only for DF5 or DF21 messages, bit 20-32.
+    credit: @fbyrkjeland
+
+    Args:
+        msg (String): 28 bytes hexadecimal message string
+
+    Returns:
+        string: squawk code
+
+    """
+    if df(msg) not in [5, 21]:
+        raise RuntimeError("Message must be Downlink Format 5 or 21.")
+
+    cdef bytearray _mbin = bytearray(hex2bin(msg).encode())
+    cdef unsigned char[:] mbin = _mbin
+
+    cdef bytearray _idcode = bytearray(4)
+    cdef unsigned char[:] idcode = _idcode
+
+    cdef unsigned char C1 = mbin[19]
+    cdef unsigned char A1 = mbin[20]
+    cdef unsigned char C2 = mbin[21]
+    cdef unsigned char A2 = mbin[22]
+    cdef unsigned char C4 = mbin[23]
+    cdef unsigned char A4 = mbin[24]
+    # _ = mbin[25]
+    cdef unsigned char B1 = mbin[26]
+    cdef unsigned char D1 = mbin[27]
+    cdef unsigned char B2 = mbin[28]
+    cdef unsigned char D2 = mbin[29]
+    cdef unsigned char B4 = mbin[30]
+    cdef unsigned char D4 = mbin[31]
+
+    # byte1 = int(A4 + A2 + A1, 2)
+    # byte2 = int(B4 + B2 + B1, 2)
+    # byte3 = int(C4 + C2 + C1, 2)
+    # byte4 = int(D4 + D2 + D1, 2)
+
+    idcode[0] = int_to_char((char_to_int(A4)*2 + char_to_int(A2))*2 + char_to_int(A1))
+    idcode[1] = int_to_char((char_to_int(B4)*2 + char_to_int(B2))*2 + char_to_int(B1))
+    idcode[2] = int_to_char((char_to_int(C4)*2 + char_to_int(C2))*2 + char_to_int(C1))
+    idcode[3] = int_to_char((char_to_int(D4)*2 + char_to_int(D2))*2 + char_to_int(D1))
+
+    return _idcode.decode()
+
+    #return str(byte1) + str(byte2) + str(byte3) + str(byte4)
+
+
+@cython.boundscheck(False)
+@cython.wraparound(False)
+cpdef int altcode(str msg):
+    """Compute the altitude.
+
+    Applicable only for DF4 or DF20 message, bit 20-32.
+    credit: @fbyrkjeland
+
+    Args:
+        msg (String): 28 bytes hexadecimal message string
+
+    Returns:
+        int: altitude in ft
+
+    """
+    if df(msg) not in [0, 4, 16, 20]:
+        raise RuntimeError("Message must be Downlink Format 0, 4, 16, or 20.")
+
+    # Altitude code, bit 20-32
+    cdef bytearray _mbin = bytearray(hex2bin(msg).encode())
+    cdef unsigned char[:] mbin = _mbin
+
+    cdef char mbit = mbin[25]  # M bit: 26
+    cdef char qbit = mbin[27]  # Q bit: 28
+    cdef int alt = 0
+    cdef bytearray vbin
+    cdef bytearray _graybytes = bytearray(11)
+    cdef unsigned char[:] graybytes = _graybytes
+
+    if mbit == 48:  # unit in ft, "0" -> 48
+        if qbit == 49:  # 25ft interval, "1" -> 49
+            vbin = _mbin[19:25] + _mbin[26:27] + _mbin[28:32]
+            alt = bin2int(vbin.decode()) * 25 - 1000
+        if qbit == 48:  # 100ft interval, above 50175ft, "0" -> 48
+            graybytes[8] = mbin[19]
+            graybytes[2] = mbin[20]
+            graybytes[9] = mbin[21]
+            graybytes[3] = mbin[22]
+            graybytes[10] = mbin[23]
+            graybytes[4] = mbin[24]
+            # _ = mbin[25]
+            graybytes[5] = mbin[26]
+            # cdef char D1 = mbin[27]  # always zero
+            graybytes[6] = mbin[28]
+            graybytes[0] = mbin[29]
+            graybytes[7] = mbin[30]
+            graybytes[1] = mbin[31]
+            # graybytes = D2 + D4 + A1 + A2 + A4 + B1 + B2 + B4 + C1 + C2 + C4
+
+            alt = gray2alt(_graybytes.decode())
+
+    if mbit == 49:  # unit in meter, "1" -> 49
+        vbin = _mbin[19:25] + _mbin[26:31]
+        alt = int(bin2int(vbin.decode()) * 3.28084)  # convert to ft
+
+    return alt
+
+
+
+cpdef int gray2alt(str codestr):
+    cdef str gc500 = codestr[:8]
+    cdef int n500 = gray2int(gc500)
+
+    # in 100-ft step must be converted first
+    cdef str gc100 = codestr[8:]
+    cdef int n100 = gray2int(gc100)
+
+    if n100 in [0, 5, 6]:
+        return -1
+        #return None
+
+    if n100 == 7:
+        n100 = 5
+
+    if n500 % 2:
+        n100 = 6 - n100
+
+    alt = (n500 * 500 + n100 * 100) - 1300
+    return alt
+
+
+cdef int gray2int(str graystr):
+    """Convert greycode to binary."""
+    cdef int num = bin2int(graystr)
+    num ^= num >> 8
+    num ^= num >> 4
+    num ^= num >> 2
+    num ^= num >> 1
+    return num
+
+
+cdef str data(str msg):
+    """Return the data frame in the message, bytes 9 to 22."""
+    return msg[8:-6]
+
+
+cpdef bint allzeros(str msg):
+    """Check if the data bits are all zeros.
+
+    Args:
+        msg (String): 28 bytes hexadecimal message string
+
+    Returns:
+        bool: True or False
+
+    """
+    d = hex2bin(data(msg))
+
+    if bin2int(d) > 0:
+        return False
+    else:
+        return True
+
+
+def wrongstatus(data, sb, msb, lsb):
+    """Check if the status bit and field bits are consistency.
+
+    This Function is used for checking BDS code versions.
+
+    """
+    # status bit, most significant bit, least significant bit
+    status = int(data[sb - 1])
+    value = bin2int(data[msb - 1 : lsb])
+
+    if not status:
+        if value != 0:
+            return True
+
+    return False

pyModeS/decoder/commb.py

@@ -1,3 +1,24 @@
+"""Comm-B Wrapper.
+
+The Comm-B wrapper imports all functions from the following modules:
+
+**ELS - elementary surveillance**
+    - pyModeS.decoder.bds.bds10
+    - pyModeS.decoder.bds.bds17
+    - pyModeS.decoder.bds.bds20
+    - pyModeS.decoder.bds.bds30
+
+**EHS - enhanced surveillance**
+    - pyModeS.decoder.bds.bds40
+    - pyModeS.decoder.bds.bds50
+    - pyModeS.decoder.bds.bds60
+
+**MRAR and MHR**
+    - pyModeS.decoder.bds.bds44
+    - pyModeS.decoder.bds.bds45
+
+"""
+
 from __future__ import absolute_import, print_function, division
 
 # ELS - elementary surveillance
@@ -11,5 +32,6 @@ from pyModeS.decoder.bds.bds40 import *
 from pyModeS.decoder.bds.bds50 import *
 from pyModeS.decoder.bds.bds60 import *
 
-# MRAR
+# MRAR and MHR
 from pyModeS.decoder.bds.bds44 import *
+from pyModeS.decoder.bds.bds45 import *

pyModeS/decoder/common.py

@@ -1,100 +1,134 @@
 from __future__ import absolute_import, print_function, division
 import numpy as np
+from textwrap import wrap
+
 
 def hex2bin(hexstr):
-    """Convert a hexdecimal string to binary string, with zero fillings. """
+    """Convert a hexdecimal string to binary string, with zero fillings."""
     num_of_bits = len(hexstr) * 4
     binstr = bin(int(hexstr, 16))[2:].zfill(int(num_of_bits))
     return binstr
 
 
-def bin2int(binstr):
-    """Convert a binary string to integer. """
-    return int(binstr, 2)
-
-
 def hex2int(hexstr):
-    """Convert a hexdecimal string to integer. """
+    """Convert a hexdecimal string to integer."""
     return int(hexstr, 16)
 
 
-def bin2np(binstr):
-    """Convert a binary string to numpy array. """
-    return np.array([int(i) for i in binstr])
-
-
-def np2bin(npbin):
-    """Convert a binary numpy array to string. """
-    return np.array2string(npbin, separator='')[1:-1]
+def bin2int(binstr):
+    """Convert a binary string to integer."""
+    return int(binstr, 2)
 
 
 def df(msg):
     """Decode Downlink Format vaule, bits 1 to 5."""
-    msgbin = hex2bin(msg)
-    return min( bin2int(msgbin[0:5]) , 24 )
+    dfbin = hex2bin(msg[:2])
+    return min(bin2int(dfbin[0:5]), 24)
 
 
 def crc(msg, encode=False):
-    """Mode-S Cyclic Redundancy Check
-    Detect if bit error occurs in the Mode-S message
+    """Mode-S Cyclic Redundancy Check.
+
+    Detect if bit error occurs in the Mode-S message. When encode option is on,
+    the checksum is generated.
+
     Args:
         msg (string): 28 bytes hexadecimal message string
         encode (bool): True to encode the date only and return the checksum
     Returns:
-        string: message checksum, or partity bits (encoder)
-    """
+        int: message checksum, or partity bits (encoder)
 
+    """
+    # the CRC generator
+    G = [int("11111111", 2), int("11111010", 2), int("00000100", 2), int("10000000", 2)]
+
+    if encode:
+        msg = msg[:-6] + "000000"
+
+    msgbin = hex2bin(msg)
+    msgbin_split = wrap(msgbin, 8)
+    mbytes = list(map(bin2int, msgbin_split))
+
+    for ibyte in range(len(mbytes) - 3):
+        for ibit in range(8):
+            mask = 0x80 >> ibit
+            bits = mbytes[ibyte] & mask
+
+            if bits > 0:
+                mbytes[ibyte] = mbytes[ibyte] ^ (G[0] >> ibit)
+                mbytes[ibyte + 1] = mbytes[ibyte + 1] ^ (
+                    0xFF & ((G[0] << 8 - ibit) | (G[1] >> ibit))
+                )
+                mbytes[ibyte + 2] = mbytes[ibyte + 2] ^ (
+                    0xFF & ((G[1] << 8 - ibit) | (G[2] >> ibit))
+                )
+                mbytes[ibyte + 3] = mbytes[ibyte + 3] ^ (
+                    0xFF & ((G[2] << 8 - ibit) | (G[3] >> ibit))
+                )
+
+    result = (mbytes[-3] << 16) | (mbytes[-2] << 8) | mbytes[-1]
+
+    return result
+
+
+def crc_legacy(msg, encode=False):
+    """Mode-S Cyclic Redundancy Check. (Legacy code, 2x slow)."""
     # the polynominal generattor code for CRC [1111111111111010000001001]
-    generator = np.array([1,1,1,1,1,1,1,1,1,1,1,1,1,0,1,0,0,0,0,0,0,1,0,0,1])
+    generator = np.array(
+        [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1]
+    )
     ng = len(generator)
 
-    msgnpbin = bin2np(hex2bin(msg))
+    msgnpbin = np.array([int(i) for i in hex2bin(msg)])
 
     if encode:
         msgnpbin[-24:] = [0] * 24
 
     # loop all bits, except last 24 piraty bits
-    for i in range(len(msgnpbin)-24):
+    for i in range(len(msgnpbin) - 24):
         if msgnpbin[i] == 0:
             continue
 
         # perform XOR, when 1
-        msgnpbin[i:i+ng] = np.bitwise_xor(msgnpbin[i:i+ng], generator)
+        msgnpbin[i : i + ng] = np.bitwise_xor(msgnpbin[i : i + ng], generator)
 
     # last 24 bits
-    reminder = np2bin(msgnpbin[-24:])
+    msgbin = np.array2string(msgnpbin[-24:], separator="")[1:-1]
+    reminder = bin2int(msgbin)
+
     return reminder
 
 
 def floor(x):
-    """ Mode-S floor function
+    """Mode-S floor function.
 
-        Defined as the greatest integer value k, such that k <= x
+    Defined as the greatest integer value k, such that k <= x
+    For example: floor(3.6) = 3 and floor(-3.6) = -4
 
-        eg.: floor(3.6) = 3, while floor(-3.6) = -4
     """
     return int(np.floor(x))
 
 
 def icao(msg):
-    """Calculate the ICAO address from an Mode-S message
-    with DF4, DF5, DF20, DF21
+    """Calculate the ICAO address from an Mode-S message.
+
+    Applicable only with DF4, DF5, DF20, DF21 messages.
 
     Args:
         msg (String): 28 bytes hexadecimal message string
 
     Returns:
         String: ICAO address in 6 bytes hexadecimal string
-    """
 
+    """
     DF = df(msg)
 
     if DF in (11, 17, 18):
         addr = msg[2:8]
     elif DF in (0, 4, 5, 16, 20, 21):
-        c0 = bin2int(crc(msg, encode=True))
-        c1 = hex2int(msg[-6:])
-        addr = '%06X' % (c0 ^ c1)
+        c0 = crc(msg, encode=True)
+        c1 = int(msg[-6:], 16)
+        addr = "%06X" % (c0 ^ c1)
     else:
         addr = None
 
@@ -102,25 +136,34 @@ def icao(msg):
 
 
 def is_icao_assigned(icao):
-    """ Check whether the ICAO address is assigned (Annex 10, Vol 3)"""
-
-    if (icao is None) or (not isinstance(icao, str)) or (len(icao)!=6):
+    """Check whether the ICAO address is assigned (Annex 10, Vol 3)."""
+    if (icao is None) or (not isinstance(icao, str)) or (len(icao) != 6):
         return False
 
-    icaoint = hex2int(icao)
+    icaoint = int(icao, 16)
 
-    if 0x200000 < icaoint < 0x27FFFF: return False      # AFI
-    if 0x280000 < icaoint < 0x28FFFF: return False      # SAM
-    if 0x500000 < icaoint < 0x5FFFFF: return False      # EUR, NAT
-    if 0x600000 < icaoint < 0x67FFFF: return False      # MID
-    if 0x680000 < icaoint < 0x6F0000: return False      # ASIA
-    if 0x900000 < icaoint < 0x9FFFFF: return False      # NAM, PAC
-    if 0xB00000 < icaoint < 0xBFFFFF: return False      # CAR
-    if 0xD00000 < icaoint < 0xDFFFFF: return False      # future
-    if 0xF00000 < icaoint < 0xFFFFFF: return False      # future
+    if 0x200000 < icaoint < 0x27FFFF:
+        return False  # AFI
+    if 0x280000 < icaoint < 0x28FFFF:
+        return False  # SAM
+    if 0x500000 < icaoint < 0x5FFFFF:
+        return False  # EUR, NAT
+    if 0x600000 < icaoint < 0x67FFFF:
+        return False  # MID
+    if 0x680000 < icaoint < 0x6F0000:
+        return False  # ASIA
+    if 0x900000 < icaoint < 0x9FFFFF:
+        return False  # NAM, PAC
+    if 0xB00000 < icaoint < 0xBFFFFF:
+        return False  # CAR
+    if 0xD00000 < icaoint < 0xDFFFFF:
+        return False  # future
+    if 0xF00000 < icaoint < 0xFFFFFF:
+        return False  # future
 
     return True
 
+
 def typecode(msg):
     """Type code of ADS-B message
 
@@ -133,12 +176,12 @@ def typecode(msg):
     if df(msg) not in (17, 18):
         return None
 
-    msgbin = hex2bin(msg)
-    return bin2int(msgbin[32:37])
+    tcbin = hex2bin(msg[8:10])
+    return bin2int(tcbin[0:5])
 
 
 def cprNL(lat):
-    """NL() function in CPR decoding"""
+    """NL() function in CPR decoding."""
 
     if lat == 0:
         return 59
@@ -152,12 +195,15 @@ def cprNL(lat):
     nz = 15
     a = 1 - np.cos(np.pi / (2 * nz))
     b = np.cos(np.pi / 180.0 * abs(lat)) ** 2
-    nl = 2 * np.pi / (np.arccos(1 - a/b))
+    nl = 2 * np.pi / (np.arccos(1 - a / b))
     NL = floor(nl)
     return NL
 
+
 def idcode(msg):
-    """Computes identity (squawk code) from DF5 or DF21 message, bit 20-32.
+    """Compute identity (squawk code).
+
+    Applicable only for DF5 or DF21 messages, bit 20-32.
     credit: @fbyrkjeland
 
     Args:
@@ -165,8 +211,8 @@ def idcode(msg):
 
     Returns:
         string: squawk code
-    """
 
+    """
     if df(msg) not in [5, 21]:
         raise RuntimeError("Message must be Downlink Format 5 or 21.")
 
@@ -186,16 +232,18 @@ def idcode(msg):
     B4 = mbin[30]
     D4 = mbin[31]
 
-    byte1 = int(A4+A2+A1, 2)
-    byte2 = int(B4+B2+B1, 2)
-    byte3 = int(C4+C2+C1, 2)
-    byte4 = int(D4+D2+D1, 2)
+    byte1 = int(A4 + A2 + A1, 2)
+    byte2 = int(B4 + B2 + B1, 2)
+    byte3 = int(C4 + C2 + C1, 2)
+    byte4 = int(D4 + D2 + D1, 2)
 
     return str(byte1) + str(byte2) + str(byte3) + str(byte4)
 
 
 def altcode(msg):
-    """Computes the altitude from DF4 or DF20 message, bit 20-32.
+    """Compute the altitude.
+
+    Applicable only for DF4 or DF20 message, bit 20-32.
     credit: @fbyrkjeland
 
     Args:
@@ -203,23 +251,22 @@ def altcode(msg):
 
     Returns:
         int: altitude in ft
-    """
 
+    """
     if df(msg) not in [0, 4, 16, 20]:
         raise RuntimeError("Message must be Downlink Format 0, 4, 16, or 20.")
 
     # Altitude code, bit 20-32
     mbin = hex2bin(msg)
 
-    mbit = mbin[25]   # M bit: 26
-    qbit = mbin[27]   # Q bit: 28
+    mbit = mbin[25]  # M bit: 26
+    qbit = mbin[27]  # Q bit: 28
 
-
-    if mbit == '0':         # unit in ft
-        if qbit == '1':     # 25ft interval
+    if mbit == "0":  # unit in ft
+        if qbit == "1":  # 25ft interval
             vbin = mbin[19:25] + mbin[26] + mbin[28:32]
             alt = bin2int(vbin) * 25 - 1000
-        if qbit == '0':     # 100ft interval, above 50175ft
+        if qbit == "0":  # 100ft interval, above 50175ft
             C1 = mbin[19]
             A1 = mbin[20]
             C2 = mbin[21]
@@ -234,10 +281,10 @@ def altcode(msg):
             B4 = mbin[30]
             D4 = mbin[31]
 
-            graystr =  D2 + D4 + A1 + A2 + A4 + B1 + B2 + B4 + C1 + C2 + C4
+            graystr = D2 + D4 + A1 + A2 + A4 + B1 + B2 + B4 + C1 + C2 + C4
             alt = gray2alt(graystr)
 
-    if mbit == '1':         # unit in meter
+    if mbit == "1":  # unit in meter
         vbin = mbin[19:25] + mbin[26:31]
         alt = int(bin2int(vbin) * 3.28084)  # convert to ft
 
@@ -258,36 +305,37 @@ def gray2alt(codestr):
     if n100 == 7:
         n100 = 5
 
-    if n500%2:
+    if n500 % 2:
         n100 = 6 - n100
 
-    alt = (n500*500 + n100*100) - 1300
+    alt = (n500 * 500 + n100 * 100) - 1300
     return alt
 
 
 def gray2int(graystr):
-    """Convert greycode to binary"""
+    """Convert greycode to binary."""
     num = bin2int(graystr)
-    num ^= (num >> 8)
-    num ^= (num >> 4)
-    num ^= (num >> 2)
-    num ^= (num >> 1)
+    num ^= num >> 8
+    num ^= num >> 4
+    num ^= num >> 2
+    num ^= num >> 1
     return num
 
 
 def data(msg):
-    """Return the data frame in the message, bytes 9 to 22"""
+    """Return the data frame in the message, bytes 9 to 22."""
     return msg[8:-6]
 
 
 def allzeros(msg):
-    """check if the data bits are all zeros
+    """Check if the data bits are all zeros.
 
     Args:
         msg (String): 28 bytes hexadecimal message string
 
     Returns:
         bool: True or False
+
     """
     d = hex2bin(data(msg))
 
@@ -298,13 +346,14 @@ def allzeros(msg):
 
 
 def wrongstatus(data, sb, msb, lsb):
-    """Check if the status bit and field bits are consistency. This Function
-    is used for checking BDS code versions.
-    """
+    """Check if the status bit and field bits are consistency.
 
+    This Function is used for checking BDS code versions.
+
+    """
     # status bit, most significant bit, least significant bit
-    status = int(data[sb-1])
-    value = bin2int(data[msb-1:lsb])
+    status = int(data[sb - 1])
+    value = bin2int(data[msb - 1 : lsb])
 
     if not status:
         if value != 0:

pyModeS/decoder/ehs.py

@@ -1,3 +1,14 @@
+"""EHS Wrapper.
+
+``pyModeS.ehs`` is deprecated, please use ``pyModeS.commb`` instead.
+
+The EHS wrapper imports all functions from the following modules:
+    - pyModeS.decoder.bds.bds40
+    - pyModeS.decoder.bds.bds50
+    - pyModeS.decoder.bds.bds60
+
+"""
+
 from __future__ import absolute_import, print_function, division
 import warnings
 
@@ -6,13 +17,20 @@ from pyModeS.decoder.bds.bds50 import *
 from pyModeS.decoder.bds.bds60 import *
 from pyModeS.decoder.bds import infer
 
-warnings.simplefilter('once', DeprecationWarning)
-warnings.warn("pms.ehs module is deprecated. Please use pms.commb instead.", DeprecationWarning)
+warnings.simplefilter("once", DeprecationWarning)
+warnings.warn(
+    "pms.ehs module is deprecated. Please use pms.commb instead.", DeprecationWarning
+)
+
 
 def BDS(msg):
-    warnings.warn("pms.ehs.BDS() is deprecated, use pms.bds.infer() instead.", DeprecationWarning)
+    warnings.warn(
+        "pms.ehs.BDS() is deprecated, use pms.bds.infer() instead.", DeprecationWarning
+    )
     return infer(msg)
 
+
 def icao(msg):
     from pyModeS.decoder.common import icao
+
     return icao(msg)

pyModeS/decoder/els.py

@@ -1,3 +1,15 @@
+"""ELS Wrapper.
+
+``pyModeS.els`` is deprecated, please use ``pyModeS.commb`` instead.
+
+The ELS wrapper imports all functions from the following modules:
+    - pyModeS.decoder.bds.bds10
+    - pyModeS.decoder.bds.bds17
+    - pyModeS.decoder.bds.bds20
+    - pyModeS.decoder.bds.bds30
+
+"""
+
 from __future__ import absolute_import, print_function, division
 
 from pyModeS.decoder.bds.bds10 import *
@@ -6,5 +18,8 @@ from pyModeS.decoder.bds.bds20 import *
 from pyModeS.decoder.bds.bds30 import *
 
 import warnings
-warnings.simplefilter('once', DeprecationWarning)
-warnings.warn("pms.els module is deprecated. Please use pms.commb instead.", DeprecationWarning)
+
+warnings.simplefilter("once", DeprecationWarning)
+warnings.warn(
+    "pms.els module is deprecated. Please use pms.commb instead.", DeprecationWarning
+)

pyModeS/decoder/surv.py

@@ -1,20 +1,7 @@
-# Copyright (C) 2018 Junzi Sun (TU Delft)
-
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# (at your option) any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
 """
 Warpper for short roll call surveillance replies DF=4/5
+
+[To be implemented]
 """
 
 from __future__ import absolute_import, print_function, division

pyModeS/decoder/uncertainty.py

@@ -1,120 +1,152 @@
+"""Uncertainty parameters.
+
+See source code at: https://github.com/junzis/pyModeS/blob/master/pyModeS/decoder/uncertainty.py
+"""
+
 NA = None
 
 TC_NUCp_lookup = {
-    0:0, 5:9, 6:8, 7:7, 8:6,
-    9:9, 10:8, 11:7, 12:6, 13:5, 14:4, 15:3, 16:2, 17:1, 18:0,
-    20:9, 21:8, 22:0
+    0: 0,
+    5: 9,
+    6: 8,
+    7: 7,
+    8: 6,
+    9: 9,
+    10: 8,
+    11: 7,
+    12: 6,
+    13: 5,
+    14: 4,
+    15: 3,
+    16: 2,
+    17: 1,
+    18: 0,
+    20: 9,
+    21: 8,
+    22: 0,
 }
 
 TC_NICv1_lookup = {
-    5:11, 6:10, 7:9, 8:0,
-    9:11, 10:10, 11:{1:9, 0:8}, 12:7, 13:6, 14:5, 15:4, 16:{1:3, 0:2}, 17:1, 18:0,
-    20:11, 21:10, 22:0
+    5: 11,
+    6: 10,
+    7: 9,
+    8: 0,
+    9: 11,
+    10: 10,
+    11: {1: 9, 0: 8},
+    12: 7,
+    13: 6,
+    14: 5,
+    15: 4,
+    16: {1: 3, 0: 2},
+    17: 1,
+    18: 0,
+    20: 11,
+    21: 10,
+    22: 0,
 }
 
 TC_NICv2_lookup = {
-    5:11, 6:10, 7:{2:9, 0:8}, 8:{3:7, 2:6, 1:6, 0:0},
-    9:11, 10:10, 11:{3:9, 0:8}, 12:7, 13:6, 14:5, 15:4, 16:{3:3, 0:2}, 17:1, 18:0,
-    20:11, 21:10, 22:0
+    5: 11,
+    6: 10,
+    7: {2: 9, 0: 8},
+    8: {3: 7, 2: 6, 1: 6, 0: 0},
+    9: 11,
+    10: 10,
+    11: {3: 9, 0: 8},
+    12: 7,
+    13: 6,
+    14: 5,
+    15: 4,
+    16: {3: 3, 0: 2},
+    17: 1,
+    18: 0,
+    20: 11,
+    21: 10,
+    22: 0,
 }
 
 
 NUCp = {
-    9: {'HPL':7.5,      'RCu':3,        'RCv':4},
-    8: {'HPL':25,       'RCu':10,       'RCv':15},
-    7: {'HPL':185,      'RCu':93,       'RCv':NA},
-    6: {'HPL':370,      'RCu':185,      'RCv':NA},
-    5: {'HPL':926,      'RCu':463,      'RCv':NA},
-    4: {'HPL':1852,     'RCu':926,      'RCv':NA},
-    3: {'HPL':3704,     'RCu':1852,     'RCv':NA},
-    2: {'HPL':18520,    'RCu':9260,     'RCv':NA},
-    1: {'HPL':37040,    'RCu':18520,    'RCv':NA},
-    0: {'HPL':NA,       'RCu':NA,       'RCv':NA},
+    9: {"HPL": 7.5, "RCu": 3, "RCv": 4},
+    8: {"HPL": 25, "RCu": 10, "RCv": 15},
+    7: {"HPL": 185, "RCu": 93, "RCv": NA},
+    6: {"HPL": 370, "RCu": 185, "RCv": NA},
+    5: {"HPL": 926, "RCu": 463, "RCv": NA},
+    4: {"HPL": 1852, "RCu": 926, "RCv": NA},
+    3: {"HPL": 3704, "RCu": 1852, "RCv": NA},
+    2: {"HPL": 18520, "RCu": 9260, "RCv": NA},
+    1: {"HPL": 37040, "RCu": 18520, "RCv": NA},
+    0: {"HPL": NA, "RCu": NA, "RCv": NA},
 }
 
 NUCv = {
-    0: {'HVE':NA,     'VVE':NA},
-    1: {'HVE':10,     'VVE':15.2},
-    2: {'HVE':3,      'VVE':4.5},
-    3: {'HVE':1,      'VVE':1.5},
-    4: {'HVE':0.3,    'VVE':0.46},
+    0: {"HVE": NA, "VVE": NA},
+    1: {"HVE": 10, "VVE": 15.2},
+    2: {"HVE": 3, "VVE": 4.5},
+    3: {"HVE": 1, "VVE": 1.5},
+    4: {"HVE": 0.3, "VVE": 0.46},
 }
 
 NACp = {
-    11: {'EPU': 3,      'VEPU': 4},
-    10: {'EPU': 10,     'VEPU': 15},
-    9: {'EPU': 30,      'VEPU': 45},
-    8: {'EPU': 93,      'VEPU': NA},
-    7: {'EPU': 185,     'VEPU': NA},
-    6: {'EPU': 556,     'VEPU': NA},
-    5: {'EPU': 926,     'VEPU': NA},
-    4: {'EPU': 1852,    'VEPU': NA},
-    3: {'EPU': 3704,    'VEPU': NA},
-    2: {'EPU': 7408,    'VEPU': NA},
-    1: {'EPU': 18520,   'VEPU': NA},
-    0: {'EPU': NA,      'VEPU': NA},
+    11: {"EPU": 3, "VEPU": 4},
+    10: {"EPU": 10, "VEPU": 15},
+    9: {"EPU": 30, "VEPU": 45},
+    8: {"EPU": 93, "VEPU": NA},
+    7: {"EPU": 185, "VEPU": NA},
+    6: {"EPU": 556, "VEPU": NA},
+    5: {"EPU": 926, "VEPU": NA},
+    4: {"EPU": 1852, "VEPU": NA},
+    3: {"EPU": 3704, "VEPU": NA},
+    2: {"EPU": 7408, "VEPU": NA},
+    1: {"EPU": 18520, "VEPU": NA},
+    0: {"EPU": NA, "VEPU": NA},
 }
 
 NACv = {
-    0: {'HFOMr':NA,     'VFOMr':NA},
-    1: {'HFOMr':10,     'VFOMr':15.2},
-    2: {'HFOMr':3,      'VFOMr':4.5},
-    3: {'HFOMr':1,      'VFOMr':1.5},
-    4: {'HFOMr':0.3,    'VFOMr':0.46},
+    0: {"HFOMr": NA, "VFOMr": NA},
+    1: {"HFOMr": 10, "VFOMr": 15.2},
+    2: {"HFOMr": 3, "VFOMr": 4.5},
+    3: {"HFOMr": 1, "VFOMr": 1.5},
+    4: {"HFOMr": 0.3, "VFOMr": 0.46},
 }
 
 SIL = {
-    3: {'PE_RCu': 1e-7, 'PE_VPL': 2e-7},
-    2: {'PE_RCu': 1e-5, 'PE_VPL': 1e-5},
-    1: {'PE_RCu': 1e-3, 'PE_VPL': 1e-3},
-    0: {'PE_RCu': NA,   'PE_VPL': NA},
+    3: {"PE_RCu": 1e-7, "PE_VPL": 2e-7},
+    2: {"PE_RCu": 1e-5, "PE_VPL": 1e-5},
+    1: {"PE_RCu": 1e-3, "PE_VPL": 1e-3},
+    0: {"PE_RCu": NA, "PE_VPL": NA},
 }
 
 
 NICv1 = {
     # NIC is used as the index at second Level
-
-    11: {0: {'Rc': 7.5,     'VPL': 11}},
-    10: {0: {'Rc': 25,      'VPL': 37.5}},
-    9: {1: {'Rc': 75,       'VPL': 112}},
-    8: {0: {'Rc': 185,      'VPL': NA}},
-    7: {0: {'Rc': 370,      'VPL': NA}},
-    6: {
-        0: {'Rc': 926,      'VPL': NA},
-        1: {'Rc': 1111,     'VPL': NA},
-    },
-    5: {0: {'Rc': 1852,     'VPL': NA}},
-    4: {0: {'Rc': 3702,     'VPL': NA}},
-    3: {1: {'Rc': 7408,     'VPL': NA}},
-    2: {0: {'Rc': 14008,    'VPL': NA}},
-    1: {0: {'Rc': 37000,    'VPL': NA}},
-    0: {0: {'Rc': NA,       'VPL': NA}},
+    11: {0: {"Rc": 7.5, "VPL": 11}},
+    10: {0: {"Rc": 25, "VPL": 37.5}},
+    9: {1: {"Rc": 75, "VPL": 112}},
+    8: {0: {"Rc": 185, "VPL": NA}},
+    7: {0: {"Rc": 370, "VPL": NA}},
+    6: {0: {"Rc": 926, "VPL": NA}, 1: {"Rc": 1111, "VPL": NA}},
+    5: {0: {"Rc": 1852, "VPL": NA}},
+    4: {0: {"Rc": 3702, "VPL": NA}},
+    3: {1: {"Rc": 7408, "VPL": NA}},
+    2: {0: {"Rc": 14008, "VPL": NA}},
+    1: {0: {"Rc": 37000, "VPL": NA}},
+    0: {0: {"Rc": NA, "VPL": NA}},
 }
 
 NICv2 = {
     # Decimal value of [NICa NICb/NICc] is used as the index at second Level
-
-    11: {0: {'Rc': 7.5}},
-    10: {0: {'Rc': 25}},
-    9: {
-        2: {'Rc': 75},
-        3: {'Rc': 75},
-    },
-    8: {0: {'Rc': 185}},
-    7: {
-        0: {'Rc': 370},
-        3: {'Rc': 370},
-    },
-    6: {
-        0: {'Rc': 926},
-        1: {'Rc': 556},
-        2: {'Rc': 556},
-        3: {'Rc': 1111},
-    },
-    5: {0: {'Rc': 1852}},
-    4: {0: {'Rc': 3702}},
-    3: {3: {'Rc': 7408}},
-    2: {0: {'Rc': 14008}},
-    1: {0: {'Rc': 37000}},
-    0: {0: {'Rc': NA}},
+    11: {0: {"Rc": 7.5}},
+    10: {0: {"Rc": 25}},
+    9: {2: {"Rc": 75}, 3: {"Rc": 75}},
+    8: {0: {"Rc": 185}},
+    7: {0: {"Rc": 370}, 3: {"Rc": 370}},
+    6: {0: {"Rc": 926}, 1: {"Rc": 556}, 2: {"Rc": 556}, 3: {"Rc": 1111}},
+    5: {0: {"Rc": 1852}},
+    4: {0: {"Rc": 3702}},
+    3: {3: {"Rc": 7408}},
+    2: {0: {"Rc": 14008}},
+    1: {0: {"Rc": 37000}},
+    0: {0: {"Rc": NA}},
 }

pyModeS/extra/aero.py

@@ -1,16 +1,21 @@
 """
 Functions for aeronautics in this module
-    - physical quantities always in SI units
-    - lat,lon,course and heading in degrees
+
+- physical quantities always in SI units
+- lat,lon,course and heading in degrees
 
 International Standard Atmosphere
+::
+
     p,rho,T = atmos(H)    # atmos as function of geopotential altitude H [m]
     a = vsound(H)         # speed of sound [m/s] as function of H[m]
     p = pressure(H)       # calls atmos but retruns only pressure [Pa]
     T = temperature(H)    # calculates temperature [K]
     rho = density(H)      # calls atmos but retruns only pressure [Pa]
 
-Speed conversion at altitude H[m] in ISA:
+Speed conversion at altitude H[m] in ISA
+::
+
     Mach = tas2mach(Vtas,H)    # true airspeed (Vtas) to mach number conversion
     Vtas = mach2tas(Mach,H)    # true airspeed (Vtas) to mach number conversion
     Vtas = eas2tas(Veas,H)     # equivalent airspeed to true airspeed, H in [m]
@@ -19,36 +24,37 @@ Speed conversion at altitude H[m] in ISA:
     Vcas = tas2cas(Vtas,H)     # Vtas to Vcas conversion both m/s, H in [m]
     Vcas = mach2cas(Mach,H)    # Mach to Vcas conversion Vcas in m/s, H in [m]
     Mach   = cas2mach(Vcas,H)  # Vcas to mach copnversion Vcas in m/s, H in [m]
+
 """
 
 import numpy as np
 
 """Aero and geo Constants """
-kts = 0.514444      # knot -> m/s
-ft = 0.3048         # ft -> m
-fpm = 0.00508       # ft/min -> m/s
-inch = 0.0254       # inch -> m
-sqft = 0.09290304   # 1 square foot
-nm = 1852.          # nautical mile -> m
-lbs = 0.453592      # pound -> kg
-g0 = 9.80665        # m/s2, Sea level gravity constant
-R = 287.05287       # m2/(s2 x K), gas constant, sea level ISA
-p0 = 101325.        # Pa, air pressure, sea level ISA
-rho0 = 1.225        # kg/m3, air density, sea level ISA
-T0 = 288.15         # K, temperature, sea level ISA
-gamma = 1.40        # cp/cv for air
-gamma1 = 0.2        # (gamma-1)/2 for air
-gamma2 = 3.5        # gamma/(gamma-1) for air
-beta = -0.0065      # [K/m] ISA temp gradient below tropopause
-r_earth = 6371000.  # m, average earth radius
-a0 = 340.293988     # m/s, sea level speed of sound ISA, sqrt(gamma*R*T0)
+kts = 0.514444  # knot -> m/s
+ft = 0.3048  # ft -> m
+fpm = 0.00508  # ft/min -> m/s
+inch = 0.0254  # inch -> m
+sqft = 0.09290304  # 1 square foot
+nm = 1852.0  # nautical mile -> m
+lbs = 0.453592  # pound -> kg
+g0 = 9.80665  # m/s2, Sea level gravity constant
+R = 287.05287  # m2/(s2 x K), gas constant, sea level ISA
+p0 = 101325.0  # Pa, air pressure, sea level ISA
+rho0 = 1.225  # kg/m3, air density, sea level ISA
+T0 = 288.15  # K, temperature, sea level ISA
+gamma = 1.40  # cp/cv for air
+gamma1 = 0.2  # (gamma-1)/2 for air
+gamma2 = 3.5  # gamma/(gamma-1) for air
+beta = -0.0065  # [K/m] ISA temp gradient below tropopause
+r_earth = 6371000.0  # m, average earth radius
+a0 = 340.293988  # m/s, sea level speed of sound ISA, sqrt(gamma*R*T0)
 
 
 def atmos(H):
     # H in metres
     T = np.maximum(288.15 - 0.0065 * H, 216.65)
-    rhotrop = 1.225 * (T / 288.15)**4.256848030018761
-    dhstrat = np.maximum(0., H - 11000.0)
+    rhotrop = 1.225 * (T / 288.15) ** 4.256848030018761
+    dhstrat = np.maximum(0.0, H - 11000.0)
     rho = rhotrop * np.exp(-dhstrat / 6341.552161)
     p = rho * R * T
     return p, rho, T
@@ -95,11 +101,13 @@ def distance(lat1, lon1, lat2, lon2, H=0):
     theta1 = np.radians(lon1)
     theta2 = np.radians(lon2)
 
-    cos = np.sin(phi1) * np.sin(phi2) * np.cos(theta1 - theta2) + np.cos(phi1) * np.cos(phi2)
-    cos = np.where(cos>1, 1, cos)
+    cos = np.sin(phi1) * np.sin(phi2) * np.cos(theta1 - theta2) + np.cos(phi1) * np.cos(
+        phi2
+    )
+    cos = np.where(cos > 1, 1, cos)
 
     arc = np.arccos(cos)
-    dist = arc * (r_earth + H)   # meters, radius of earth
+    dist = arc * (r_earth + H)  # meters, radius of earth
     return dist
 
 
@@ -108,9 +116,8 @@ def bearing(lat1, lon1, lat2, lon2):
     lon1 = np.radians(lon1)
     lat2 = np.radians(lat2)
     lon2 = np.radians(lon2)
-    x = np.sin(lon2-lon1) * np.cos(lat2)
-    y = np.cos(lat1) * np.sin(lat2) \
-        - np.sin(lat1) * np.cos(lat2) * np.cos(lon2-lon1)
+    x = np.sin(lon2 - lon1) * np.cos(lat2)
+    y = np.cos(lat1) * np.sin(lat2) - np.sin(lat1) * np.cos(lat2) * np.cos(lon2 - lon1)
     initial_bearing = np.arctan2(x, y)
     initial_bearing = np.degrees(initial_bearing)
     bearing = (initial_bearing + 360) % 360
@@ -123,44 +130,44 @@ def bearing(lat1, lon1, lat2, lon2):
 def tas2mach(Vtas, H):
     """True Airspeed to Mach number"""
     a = vsound(H)
-    Mach = Vtas/a
+    Mach = Vtas / a
     return Mach
 
 
 def mach2tas(Mach, H):
     """Mach number to True Airspeed"""
     a = vsound(H)
-    Vtas = Mach*a
+    Vtas = Mach * a
     return Vtas
 
 
 def eas2tas(Veas, H):
     """Equivalent Airspeed to True Airspeed"""
     rho = density(H)
-    Vtas = Veas * np.sqrt(rho0/rho)
+    Vtas = Veas * np.sqrt(rho0 / rho)
     return Vtas
 
 
 def tas2eas(Vtas, H):
     """True Airspeed to Equivalent Airspeed"""
     rho = density(H)
-    Veas = Vtas * np.sqrt(rho/rho0)
+    Veas = Vtas * np.sqrt(rho / rho0)
     return Veas
 
 
 def cas2tas(Vcas, H):
     """Calibrated Airspeed to True Airspeed"""
     p, rho, T = atmos(H)
-    qdyn = p0*((1.+rho0*Vcas*Vcas/(7.*p0))**3.5-1.)
-    Vtas = np.sqrt(7.*p/rho*((1.+qdyn/p)**(2./7.)-1.))
+    qdyn = p0 * ((1.0 + rho0 * Vcas * Vcas / (7.0 * p0)) ** 3.5 - 1.0)
+    Vtas = np.sqrt(7.0 * p / rho * ((1.0 + qdyn / p) ** (2.0 / 7.0) - 1.0))
     return Vtas
 
 
 def tas2cas(Vtas, H):
     """True Airspeed to Calibrated Airspeed"""
     p, rho, T = atmos(H)
-    qdyn = p*((1.+rho*Vtas*Vtas/(7.*p))**3.5-1.)
-    Vcas = np.sqrt(7.*p0/rho0*((qdyn/p0+1.)**(2./7.)-1.))
+    qdyn = p * ((1.0 + rho * Vtas * Vtas / (7.0 * p)) ** 3.5 - 1.0)
+    Vcas = np.sqrt(7.0 * p0 / rho0 * ((qdyn / p0 + 1.0) ** (2.0 / 7.0) - 1.0))
     return Vcas
 
 

pyModeS/extra/rtlreader.py

@@ -0,0 +1,162 @@
+import numpy as np
+import pyModeS as pms
+from rtlsdr import RtlSdr
+import time
+
+modes_sample_rate = 2e6
+modes_frequency = 1090e6
+buffer_size = 1024 * 100
+read_size = 1024 * 20
+
+pbits = 8
+fbits = 112
+preamble = [1, 0, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 0]
+th_amp = 0.2  # signal amplitude threshold for 0 and 1 bit
+th_amp_diff = 0.8  # signal amplitude threshold difference between 0 and 1 bit
+
+
+class RtlReader(object):
+    def __init__(self, **kwargs):
+        super(RtlReader, self).__init__()
+        self.signal_buffer = []
+        self.sdr = RtlSdr()
+        self.sdr.sample_rate = modes_sample_rate
+        self.sdr.center_freq = modes_frequency
+        self.sdr.gain = "auto"
+        # sdr.freq_correction = 75
+
+        self.debug = kwargs.get("debug", False)
+        self.raw_pipe_in = None
+        self.stop_flag = False
+
+    def _process_buffer(self):
+        messages = []
+
+        # signal_array = np.array(self.signal_buffer)
+        # pulses_array = np.where(np.array(self.signal_buffer) < th_amp, 0, 1)
+        # pulses = "".join(str(x) for x in pulses_array)
+        buffer_length = len(self.signal_buffer)
+
+        i = 0
+        while i < buffer_length:
+            if self.signal_buffer[i] < th_amp:
+                i += 1
+                continue
+
+            # if pulses[i : i + pbits * 2] == preamble:
+            if self._check_preamble(self.signal_buffer[i : i + pbits * 2]):
+                frame_start = i + pbits * 2
+                frame_end = i + pbits * 2 + (fbits + 1) * 2
+                frame_length = (fbits + 1) * 2
+                frame_pulses = self.signal_buffer[frame_start:frame_end]
+
+                msgbin = ""
+                for j in range(0, frame_length, 2):
+                    p2 = frame_pulses[j : j + 2]
+                    if len(p2) < 2:
+                        break
+
+                    if p2[0] < th_amp and p2[1] < th_amp:
+                        break
+                    elif p2[0] >= p2[1]:
+                        c = "1"
+                    elif p2[0] < p2[1]:
+                        c = "0"
+                    else:
+                        msgbin = ""
+                        break
+                    msgbin += c
+
+                # advance i with a jump
+                i = frame_start + j
+
+                if len(msgbin) > 0:
+                    msghex = pms.bin2hex(msgbin)
+                    if self._check_msg(msghex):
+                        messages.append([msghex, time.time()])
+                    if self.debug:
+                        self._debug_msg(msghex)
+
+            elif i > buffer_length - 500:
+                # save some for next process
+                break
+            else:
+                i += 1
+
+        # keep reminder of buffer for next iteration
+        self.signal_buffer = self.signal_buffer[i:]
+        return messages
+
+    def _check_preamble(self, pulses):
+        if len(pulses) != 16:
+            return False
+
+        for i in range(16):
+            if abs(pulses[i] - preamble[i]) > th_amp_diff:
+                return False
+
+        return True
+
+    def _check_msg(self, msg):
+        df = pms.df(msg)
+        msglen = len(msg)
+        if df == 17 and msglen == 28:
+            if pms.crc(msg) == 0:
+                return True
+        elif df in [20, 21] and msglen == 28:
+            return True
+        elif df in [4, 5, 11] and msglen == 14:
+            return True
+
+    def _debug_msg(self, msg):
+        df = pms.df(msg)
+        msglen = len(msg)
+        if df == 17 and msglen == 28:
+            print(msg, pms.icao(msg), pms.crc(msg))
+        elif df in [20, 21] and msglen == 28:
+            print(msg, pms.icao(msg))
+        elif df in [4, 5, 11] and msglen == 14:
+            print(msg, pms.icao(msg))
+        else:
+            # print("[*]", msg)
+            pass
+
+    def _read_callback(self, data, rtlsdr_obj):
+        # scaling signal (imporatant)
+        amp = np.absolute(data)
+        amp_norm = np.interp(amp, (amp.min(), amp.max()), (0, 1))
+        self.signal_buffer.extend(amp_norm.tolist())
+
+        if len(self.signal_buffer) >= buffer_size:
+            messages = self._process_buffer()
+            self.handle_messages(messages)
+
+    def handle_messages(self, messages):
+        """re-implement this method to handle the messages"""
+        for msg, t in messages:
+            # print("%15.9f %s" % (t, msg))
+            pass
+
+    def stop(self, *args, **kwargs):
+        self.sdr.cancel_read_async()
+
+    def run(self, raw_pipe_in=None, stop_flag=None):
+        self.raw_pipe_in = raw_pipe_in
+        self.stop_flag = stop_flag
+        self.sdr.read_samples_async(self._read_callback, read_size)
+
+        # count = 1
+        # while count < 1000:
+        #     count += 1
+        #     data = self.sdr.read_samples(read_size)
+        #     self._read_callback(data, None)
+
+
+if __name__ == "__main__":
+    import signal
+
+    rtl = RtlReader()
+    signal.signal(signal.SIGINT, rtl.stop)
+
+    rtl.debug = True
+    rtl.run()

pyModeS/extra/tcpclient.py

@@ -1,53 +1,55 @@
-'''
-Stream beast raw data from a TCP server, convert to mode-s messages
-'''
+"""Stream beast raw data from a TCP server, convert to mode-s messages."""
+
 from __future__ import print_function, division
 import os
 import sys
-import socket
 import time
-from threading import Thread
+import pyModeS as pms
+import traceback
+import zmq
 
-if (sys.version_info > (3, 0)):
+if sys.version_info > (3, 0):
     PY_VERSION = 3
 else:
     PY_VERSION = 2
 
-class BaseClient(Thread):
-    def __init__(self, host, port, rawtype):
-        Thread.__init__(self)
+
+class TcpClient(object):
+    def __init__(self, host, port, datatype):
+        super(TcpClient, self).__init__()
         self.host = host
         self.port = port
         self.buffer = []
-        self.rawtype = rawtype
-        if self.rawtype not in ['avr', 'beast', 'skysense']:
-            print("rawtype must be either avr, beast or skysense")
+        self.socket = None
+        self.datatype = datatype
+        if self.datatype not in ["raw", "beast", "skysense"]:
+            print("datatype must be either raw, beast or skysense")
             os._exit(1)
 
+        self.raw_pipe_in = None
+        self.stop_flag = False
+
     def connect(self):
-        while True:
-            try:
-                s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
-                s.settimeout(10)    # 10 second timeout
-                s.connect((self.host, self.port))
-                print("Server connected - %s:%s" % (self.host, self.port))
-                print("collecting ADS-B messages...")
-                return s
-            except socket.error as err:
-                print("Socket connection error: %s. reconnecting..." % err)
-                time.sleep(3)
+        self.socket = zmq.Context().socket(zmq.STREAM)
+        self.socket.setsockopt(zmq.LINGER, 0)
+        self.socket.setsockopt(zmq.RCVTIMEO, 10000)
+        self.socket.connect("tcp://%s:%s" % (self.host, self.port))
 
+    def stop(self):
+        self.socket.disconnect()
 
-    def read_avr_buffer(self):
-        # -- testing --
-        # for b in self.buffer:
-        #     print(chr(b), b)
-
-        # Append message with 0-9,A-F,a-f, until stop sign
+    def read_raw_buffer(self):
+        """ Read raw ADS-B data type.
 
+        String strats with "*" and ends with ";". For example:
+            *5d484ba898f8c6;
+            *8d400cd5990d7e9a10043e5e6da0;
+            *a0001498be800030aa0000c7a75f;
+        """
         messages = []
 
         msg_stop = False
+        self.current_msg = ""
         for b in self.buffer:
             if b == 59:
                 msg_stop = True
@@ -55,9 +57,9 @@ class BaseClient(Thread):
                 messages.append([self.current_msg, ts])
             if b == 42:
                 msg_stop = False
-                self.current_msg = ''
+                self.current_msg = ""
 
-            if (not msg_stop) and (48<=b<=57 or 65<=b<=70 or 97<=b<=102):
+            if (not msg_stop) and (48 <= b <= 57 or 65 <= b <= 70 or 97 <= b <= 102):
                 self.current_msg = self.current_msg + chr(b)
 
         self.buffer = []
@@ -65,7 +67,8 @@ class BaseClient(Thread):
         return messages
 
     def read_beast_buffer(self):
-        '''
+        """Handle mode-s beast data type.
+
         <esc> "1" : 6 byte MLAT timestamp, 1 byte signal level,
             2 byte Mode-AC
         <esc> "2" : 6 byte MLAT timestamp, 1 byte signal level,
@@ -79,8 +82,7 @@ class BaseClient(Thread):
 
         timestamp:
         wiki.modesbeast.com/Radarcape:Firmware_Versions#The_GPS_timestamp
-        '''
-
+        """
         messages_mlat = []
         msg = []
         i = 0
@@ -89,16 +91,16 @@ class BaseClient(Thread):
         # then, reset the self.buffer with the remainder
 
         while i < len(self.buffer):
-            if (self.buffer[i:i+2] == [0x1a, 0x1a]):
-                msg.append(0x1a)
+            if self.buffer[i : i + 2] == [0x1A, 0x1A]:
+                msg.append(0x1A)
                 i += 1
-            elif (i == len(self.buffer) - 1) and (self.buffer[i] == 0x1a):
+            elif (i == len(self.buffer) - 1) and (self.buffer[i] == 0x1A):
                 # special case where the last bit is 0x1a
-                msg.append(0x1a)
-            elif self.buffer[i] == 0x1a:
+                msg.append(0x1A)
+            elif self.buffer[i] == 0x1A:
                 if i == len(self.buffer) - 1:
                     # special case where the last bit is 0x1a
-                    msg.append(0x1a)
+                    msg.append(0x1A)
                 elif len(msg) > 0:
                     messages_mlat.append(msg)
                     msg = []
@@ -110,12 +112,12 @@ class BaseClient(Thread):
         if len(msg) > 0:
             reminder = []
             for i, m in enumerate(msg):
-                if (m == 0x1a) and (i < len(msg)-1):
+                if (m == 0x1A) and (i < len(msg) - 1):
                     # rewind 0x1a, except when it is at the last bit
                     reminder.extend([m, m])
                 else:
                     reminder.append(m)
-            self.buffer = [0x1a] + msg
+            self.buffer = [0x1A] + msg
         else:
             self.buffer = []
 
@@ -129,67 +131,83 @@ class BaseClient(Thread):
 
             if msgtype == 0x32:
                 # Mode-S Short Message, 7 byte, 14-len hexstr
-                msg = ''.join('%02X' % i for i in mm[8:15])
+                msg = "".join("%02X" % i for i in mm[8:15])
             elif msgtype == 0x33:
                 # Mode-S Long Message, 14 byte, 28-len hexstr
-                msg = ''.join('%02X' % i for i in mm[8:22])
+                msg = "".join("%02X" % i for i in mm[8:22])
             else:
                 # Other message tupe
                 continue
 
             if len(msg) not in [14, 28]:
-                # incomplete message
+                continue
+
+            df = pms.df(msg)
+
+            # skip incomplete message
+            if df in [0, 4, 5, 11] and len(msg) != 14:
+                continue
+            if df in [16, 17, 18, 19, 20, 21, 24] and len(msg) != 28:
                 continue
 
             messages.append([msg, ts])
         return messages
 
     def read_skysense_buffer(self):
-        """
-        ----------------------------------------------------------------------------------
-        Field      SS MS MS MS MS MS MS MS MS MS MS MS MS MS MS TS TS TS TS TS TS RS RS RS
-        ----------------------------------------------------------------------------------
-        Position:   0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
-        ----------------------------------------------------------------------------------
-    
-        SS field - Start character
-        Position 0:
-          1 byte = 8 bits
-          Start character '$'
-        
-        MS field - Payload
-        Postion 1 through 14:
-          14 bytes = 112 bits
-          Mode-S payload
-          In case of DF types that only carry 7 bytes of information position 8 through 14 are set to 0x00.
-        
-        TS field - Time stamp
-        Position 15 through 20:
-          6 bytes = 48 bits
-          Time stamp with fields as:
-        
-            Lock Status - Status of internal time keeping mechanism
-            Equal to 1 if operating normally
-            Bit 47 - 1 bit
-        
-            Time of day in UTC seconds, between 0 and 86399
-            Bits 46 through 30 - 17 bits
-            
-            Nanoseconds into current second, between 0 and 999999999
-            Bits 29 through 0 - 30 bits 
-        
-        RS field - Signal Level
-        Position 21 through 23:
-         3 bytes = 24 bits
-         RSSI (received signal strength indication) and relative noise level with fields
-        
-         RNL, Q12.4 unsigned fixed point binary with 4 fractional bits and 8 integer bits.
-         This is and indication of the noise level of the message. Roughly 40 counts per 10dBm.
-         Bits 23 through 12 - 12 bits 
-        
-         RSSI, Q12.4 unsigned fixed point binary with 4 fractional bits and 8 integer bits.
-         This is an indication of the signal level of the received message in ADC counts. Roughly 40 counts per 10dBm.
-         Bits 11 through 0 - 12 bits   
+        """Skysense stream format.
+
+        ::
+
+            ----------------------------------------------------------------------------------
+            Field      SS MS MS MS MS MS MS MS MS MS MS MS MS MS MS TS TS TS TS TS TS RS RS RS
+            ----------------------------------------------------------------------------------
+            Position:   0  1  2  3  4  5  6  7  8  9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
+            ----------------------------------------------------------------------------------
+
+            SS field - Start character
+            Position 0:
+              1 byte = 8 bits
+              Start character '$'
+
+            MS field - Payload
+            Postion 1 through 14:
+              14 bytes = 112 bits
+              Mode-S payload
+              In case of DF types that only carry 7 bytes of information
+                position 8 through 14 are set to 0x00.
+
+            TS field - Time stamp
+            Position 15 through 20:
+              6 bytes = 48 bits
+              Time stamp with fields as:
+
+                Lock Status - Status of internal time keeping mechanism
+                Equal to 1 if operating normally
+                Bit 47 - 1 bit
+
+                Time of day in UTC seconds, between 0 and 86399
+                Bits 46 through 30 - 17 bits
+
+                Nanoseconds into current second, between 0 and 999999999
+                Bits 29 through 0 - 30 bits
+
+            RS field - Signal Level
+            Position 21 through 23:
+              3 bytes = 24 bits
+              RSSI (received signal strength indication) and relative
+                noise level with fields
+
+              RNL, Q12.4 unsigned fixed point binary with 4 fractional
+                bits and 8 integer bits.
+              This is and indication of the noise level of the message.
+                Roughly 40 counts per 10dBm.
+              Bits 23 through 12 - 12 bits
+
+              RSSI, Q12.4 unsigned fixed point binary with 4 fractional
+                bits and 8 integer bits.
+              This is an indication of the signal level of the received
+                message in ADC counts. Roughly 40 counts per 10dBm.
+              Bits 11 through 0 - 12 bits
         """
         SS_MSGLENGTH = 24
         SS_STARTCHAR = 0x24
@@ -200,27 +218,35 @@ class BaseClient(Thread):
         messages = []
         while len(self.buffer) > SS_MSGLENGTH:
             i = 0
-            if self.buffer[i] == SS_STARTCHAR and self.buffer[i+SS_MSGLENGTH] == SS_STARTCHAR:
+            if (
+                self.buffer[i] == SS_STARTCHAR
+                and self.buffer[i + SS_MSGLENGTH] == SS_STARTCHAR
+            ):
                 i += 1
-                if (self.buffer[i]>>7):
-                    #Long message
-                    payload = self.buffer[i:i+14]
+                if self.buffer[i] >> 7:
+                    # Long message
+                    payload = self.buffer[i : i + 14]
                 else:
-                    #Short message
-                    payload = self.buffer[i:i+7]
-                msg = ''.join('%02X' % j for j in payload)
-                i += 14 #Both message types use 14 bytes
-                tsbin = self.buffer[i:i+6]
-                sec   = ( (tsbin[0] & 0x7f) << 10) | (tsbin[1] << 2 ) | (tsbin[2] >> 6)
-                nano  = ( (tsbin[2] & 0x3f) << 24) | (tsbin[3] << 16) | (tsbin[4] << 8) | tsbin[5]
-                ts = sec + nano*1.0e-9
+                    # Short message
+                    payload = self.buffer[i : i + 7]
+                msg = "".join("%02X" % j for j in payload)
+                i += 14  # Both message types use 14 bytes
+                tsbin = self.buffer[i : i + 6]
+                sec = ((tsbin[0] & 0x7F) << 10) | (tsbin[1] << 2) | (tsbin[2] >> 6)
+                nano = (
+                    ((tsbin[2] & 0x3F) << 24)
+                    | (tsbin[3] << 16)
+                    | (tsbin[4] << 8)
+                    | tsbin[5]
+                )
+                ts = sec + nano * 1.0e-9
                 i += 6
-                #Signal and noise level - Don't care for now
+                # Signal and noise level - Don't care for now
                 i += 3
                 self.buffer = self.buffer[SS_MSGLENGTH:]
-                messages.append( [msg,ts] )
+                messages.append([msg, ts])
             else:
-                self.buffer = self.buffer[1:]  
+                self.buffer = self.buffer[1:]
         return messages
 
     def handle_messages(self, messages):
@@ -228,12 +254,14 @@ class BaseClient(Thread):
         for msg, t in messages:
             print("%15.9f %s" % (t, msg))
 
-    def run(self):
-        sock = self.connect()
+    def run(self, raw_pipe_in=None, stop_flag=None):
+        self.raw_pipe_in = raw_pipe_in
+        self.stop_flag = stop_flag
+        self.connect()
 
         while True:
             try:
-                received = sock.recv(1024)
+                received = [i for i in self.socket.recv(4096)]
 
                 if PY_VERSION == 2:
                     received = [ord(i) for i in received]
@@ -246,11 +274,11 @@ class BaseClient(Thread):
                 #     continue
                 # -- Removed!! Cause delay in low data rate scenario --
 
-                if self.rawtype == 'beast':
+                if self.datatype == "beast":
                     messages = self.read_beast_buffer()
-                elif self.rawtype == 'avr':
-                    messages = self.read_avr_buffer()
-                elif self.rawtype == 'skysense':
+                elif self.datatype == "raw":
+                    messages = self.read_raw_buffer()
+                elif self.datatype == "skysense":
                     messages = self.read_skysense_buffer()
 
                 if not messages:
@@ -258,21 +286,28 @@ class BaseClient(Thread):
                 else:
                     self.handle_messages(messages)
 
-                time.sleep(0.001)
             except Exception as e:
-                print("Unexpected Error:", e)
+                # Provides the user an option to supply the environment
+                # variable PYMODES_DEBUG to halt the execution
+                # for debugging purposes
+                debug_intent = os.environ.get("PYMODES_DEBUG", "false")
+                if debug_intent.lower() == "true":
+                    traceback.print_exc()
+                    sys.exit()
+                else:
+                    print("Unexpected Error:", e)
 
                 try:
                     sock = self.connect()
+                    time.sleep(1)
                 except Exception as e:
                     print("Unexpected Error:", e)
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     # for testing purpose only
     host = sys.argv[1]
     port = int(sys.argv[2])
-    rawtype = sys.argv[3]
-    client = BaseClient(host=host, port=port, rawtype=rawtype)
-    client.daemon = True
+    datatype = sys.argv[3]
+    client = TcpClient(host=host, port=port, datatype=datatype)
     client.run()

pyModeS/streamer/decode.py

@@ -0,0 +1,284 @@
+from __future__ import absolute_import, print_function, division
+import os
+import time
+import datetime
+import csv
+import pyModeS as pms
+
+
+class Decode:
+    def __init__(self, latlon=None, dumpto=None):
+
+        self.acs = dict()
+
+        if latlon is not None:
+            self.lat0 = float(latlon[0])
+            self.lon0 = float(latlon[1])
+        else:
+            self.lat0 = None
+            self.lon0 = None
+
+        self.t = 0
+        self.cache_timeout = 60  # seconds
+
+        if dumpto is not None and os.path.isdir(dumpto):
+            self.dumpto = dumpto
+        else:
+            self.dumpto = None
+
+    def process_raw(self, adsb_ts, adsb_msg, commb_ts, commb_msg, tnow=None):
+        """process a chunk of adsb and commb messages recieved in the same
+        time period.
+        """
+        if tnow is None:
+            tnow = time.time()
+
+        self.t = tnow
+
+        local_updated_acs_buffer = []
+        output_buffer = []
+
+        # process adsb message
+        for t, msg in zip(adsb_ts, adsb_msg):
+            icao = pms.icao(msg)
+            tc = pms.adsb.typecode(msg)
+
+            if icao not in self.acs:
+                self.acs[icao] = {
+                    "live": None,
+                    "call": None,
+                    "lat": None,
+                    "lon": None,
+                    "alt": None,
+                    "gs": None,
+                    "trk": None,
+                    "roc": None,
+                    "tas": None,
+                    "roll": None,
+                    "rtrk": None,
+                    "ias": None,
+                    "mach": None,
+                    "hdg": None,
+                    "ver": None,
+                    "HPL": None,
+                    "RCu": None,
+                    "RCv": None,
+                    "HVE": None,
+                    "VVE": None,
+                    "Rc": None,
+                    "VPL": None,
+                    "EPU": None,
+                    "VEPU": None,
+                    "HFOMr": None,
+                    "VFOMr": None,
+                    "PE_RCu": None,
+                    "PE_VPL": None,
+                }
+
+            self.acs[icao]["t"] = t
+            self.acs[icao]["live"] = int(t)
+
+            if 1 <= tc <= 4:
+                cs = pms.adsb.callsign(msg)
+                self.acs[icao]["call"] = cs
+                output_buffer.append([t, icao, "cs", cs])
+
+            if (5 <= tc <= 8) or (tc == 19):
+                vdata = pms.adsb.velocity(msg)
+                if vdata is None:
+                    continue
+
+                spd, trk, roc, tag = vdata
+                if tag != "GS":
+                    continue
+                if (spd is None) or (trk is None):
+                    continue
+
+                self.acs[icao]["gs"] = spd
+                self.acs[icao]["trk"] = trk
+                self.acs[icao]["roc"] = roc
+                self.acs[icao]["tv"] = t
+
+                output_buffer.append([t, icao, "gs", spd])
+                output_buffer.append([t, icao, "trk", trk])
+                output_buffer.append([t, icao, "roc", roc])
+
+            if 5 <= tc <= 18:
+                oe = pms.adsb.oe_flag(msg)
+                self.acs[icao][oe] = msg
+                self.acs[icao]["t" + str(oe)] = t
+
+                if ("tpos" in self.acs[icao]) and (t - self.acs[icao]["tpos"] < 180):
+                    # use single message decoding
+                    rlat = self.acs[icao]["lat"]
+                    rlon = self.acs[icao]["lon"]
+                    latlon = pms.adsb.position_with_ref(msg, rlat, rlon)
+                elif (
+                    ("t0" in self.acs[icao])
+                    and ("t1" in self.acs[icao])
+                    and (abs(self.acs[icao]["t0"] - self.acs[icao]["t1"]) < 10)
+                ):
+                    # use multi message decoding
+                    try:
+                        latlon = pms.adsb.position(
+                            self.acs[icao][0],
+                            self.acs[icao][1],
+                            self.acs[icao]["t0"],
+                            self.acs[icao]["t1"],
+                            self.lat0,
+                            self.lon0,
+                        )
+                    except:
+                        # mix of surface and airborne position message
+                        continue
+                else:
+                    latlon = None
+
+                if latlon is not None:
+                    self.acs[icao]["tpos"] = t
+                    self.acs[icao]["lat"] = latlon[0]
+                    self.acs[icao]["lon"] = latlon[1]
+
+                    alt = pms.adsb.altitude(msg)
+                    self.acs[icao]["alt"] = alt
+
+                    output_buffer.append([t, icao, "lat", latlon[0]])
+                    output_buffer.append([t, icao, "lon", latlon[1]])
+                    output_buffer.append([t, icao, "alt", alt])
+
+                    local_updated_acs_buffer.append(icao)
+
+            # Uncertainty & accuracy
+            ac = self.acs[icao]
+
+            if 9 <= tc <= 18:
+                ac["nic_bc"] = pms.adsb.nic_b(msg)
+
+            if (5 <= tc <= 8) or (9 <= tc <= 18) or (20 <= tc <= 22):
+                ac["HPL"], ac["RCu"], ac["RCv"] = pms.adsb.nuc_p(msg)
+
+                if (ac["ver"] == 1) and ("nic_s" in ac.keys()):
+                    ac["Rc"], ac["VPL"] = pms.adsb.nic_v1(msg, ac["nic_s"])
+                elif (
+                    (ac["ver"] == 2)
+                    and ("nic_a" in ac.keys())
+                    and ("nic_bc" in ac.keys())
+                ):
+                    ac["Rc"] = pms.adsb.nic_v2(msg, ac["nic_a"], ac["nic_bc"])
+
+            if tc == 19:
+                ac["HVE"], ac["VVE"] = pms.adsb.nuc_v(msg)
+                if ac["ver"] in [1, 2]:
+                    ac["HFOMr"], ac["VFOMr"] = pms.adsb.nac_v(msg)
+
+            if tc == 29:
+                ac["PE_RCu"], ac["PE_VPL"], ac["base"] = pms.adsb.sil(msg, ac["ver"])
+                ac["EPU"], ac["VEPU"] = pms.adsb.nac_p(msg)
+
+            if tc == 31:
+                ac["ver"] = pms.adsb.version(msg)
+                ac["EPU"], ac["VEPU"] = pms.adsb.nac_p(msg)
+                ac["PE_RCu"], ac["PE_VPL"], ac["sil_base"] = pms.adsb.sil(
+                    msg, ac["ver"]
+                )
+
+                if ac["ver"] == 1:
+                    ac["nic_s"] = pms.adsb.nic_s(msg)
+                elif ac["ver"] == 2:
+                    ac["nic_a"], ac["nic_bc"] = pms.adsb.nic_a_c(msg)
+
+        # process commb message
+        for t, msg in zip(commb_ts, commb_msg):
+            icao = pms.icao(msg)
+
+            if icao not in self.acs:
+                continue
+
+            self.acs[icao]["live"] = int(t)
+
+            bds = pms.bds.infer(msg)
+
+            if bds == "BDS50":
+                roll50 = pms.commb.roll50(msg)
+                trk50 = pms.commb.trk50(msg)
+                rtrk50 = pms.commb.rtrk50(msg)
+                gs50 = pms.commb.gs50(msg)
+                tas50 = pms.commb.tas50(msg)
+
+                self.acs[icao]["t50"] = t
+                if tas50:
+                    self.acs[icao]["tas"] = tas50
+                    output_buffer.append([t, icao, "tas50", tas50])
+                if roll50:
+                    self.acs[icao]["roll"] = roll50
+                    output_buffer.append([t, icao, "roll50", roll50])
+                if rtrk50:
+                    self.acs[icao]["rtrk"] = rtrk50
+                    output_buffer.append([t, icao, "rtrk50", rtrk50])
+
+                if trk50:
+                    output_buffer.append([t, icao, "trk50", trk50])
+                if gs50:
+                    output_buffer.append([t, icao, "gs50", gs50])
+
+            elif bds == "BDS60":
+                ias60 = pms.commb.ias60(msg)
+                hdg60 = pms.commb.hdg60(msg)
+                mach60 = pms.commb.mach60(msg)
+                roc60baro = pms.commb.vr60baro(msg)
+                roc60ins = pms.commb.vr60ins(msg)
+
+                if ias60 or hdg60 or mach60:
+                    self.acs[icao]["t60"] = t
+                if ias60:
+                    self.acs[icao]["ias"] = ias60
+                if hdg60:
+                    self.acs[icao]["hdg"] = hdg60
+                if mach60:
+                    self.acs[icao]["mach"] = mach60
+
+                if roc60baro:
+                    output_buffer.append([t, icao, "roc60baro", roc60baro])
+                if roc60ins:
+                    output_buffer.append([t, icao, "roc60ins", roc60ins])
+
+        # clear up old data
+        for icao in list(self.acs.keys()):
+            if self.t - self.acs[icao]["live"] > self.cache_timeout:
+                del self.acs[icao]
+                continue
+
+        if self.dumpto is not None:
+            dh = str(datetime.datetime.now().strftime("%Y%m%d_%H"))
+            fn = self.dumpto + "/pymodes_dump_%s.csv" % dh
+            output_buffer.sort(key=lambda x: x[0])
+            with open(fn, "a") as f:
+                writer = csv.writer(f)
+                writer.writerows(output_buffer)
+
+        return
+
+    def get_aircraft(self):
+        """all aircraft that are stored in memeory"""
+        acs = self.acs
+        return acs
+
+    def run(self, raw_pipe_out, ac_pipe_in):
+        local_buffer = []
+        while True:
+            while raw_pipe_out.poll():
+                data = raw_pipe_out.recv()
+                local_buffer.append(data)
+
+            for data in local_buffer:
+                self.process_raw(
+                    data["adsb_ts"],
+                    data["adsb_msg"],
+                    data["commb_ts"],
+                    data["commb_msg"],
+                )
+            local_buffer = []
+
+            acs = self.get_aircraft()
+            ac_pipe_in.send(acs)
+            time.sleep(0.001)

pyModeS/streamer/modeslive

@@ -3,118 +3,132 @@
 from __future__ import print_function, division
 import os
 import sys
-import time
 import argparse
 import curses
-from threading import Lock
-import pyModeS as pms
-from pyModeS.extra.tcpclient import BaseClient
-from pyModeS.streamer.stream import Stream
+import signal
+import multiprocessing
+from pyModeS.streamer.decode import Decode
 from pyModeS.streamer.screen import Screen
-
-LOCK = Lock()
-ADSB_MSG = []
-ADSB_TS = []
-COMMB_MSG = []
-COMMB_TS = []
-
-parser = argparse.ArgumentParser()
-parser.add_argument('--server', help='server address or IP', required=True)
-parser.add_argument('--port', help='raw data port', required=True)
-parser.add_argument('--rawtype', help='beast, avr or skysense', required=True)
-parser.add_argument('--latlon', help='receiver position', nargs=2, metavar=('LAT', 'LON'), required=True)
-parser.add_argument('--show-uncertainty', dest='uncertainty', help='display uncertaint values, default off', action='store_true', required=False, default=False)
-parser.add_argument('--dumpto', help='folder to dump decoded output', required=False, default=None)
-args = parser.parse_args()
-
-SERVER = args.server
-PORT = int(args.port)
-RAWTYPE = args.rawtype
-LAT0 = float(args.latlon[0])
-LON0 = float(args.latlon[1])
-UNCERTAINTY = args.uncertainty
-DUMPTO = args.dumpto
-
-if DUMPTO is not None:
-    # append to current folder except root is given
-    if DUMPTO[0] != '/':
-        DUMPTO = os.getcwd() + '/' + DUMPTO
-
-    if not os.path.isdir(DUMPTO):
-        print('Error: dump folder (%s) does not exist' % DUMPTO)
-        sys.exit(1)
-
-
-class ModesClient(BaseClient):
-    def __init__(self, host, port, rawtype):
-        super(ModesClient, self).__init__(host, port, rawtype)
-
-    def handle_messages(self, messages):
-        local_buffer_adsb_msg = []
-        local_buffer_adsb_ts = []
-        local_buffer_ehs_msg = []
-        local_buffer_ehs_ts = []
-
-        for msg, t in messages:
-            if len(msg) < 28:           # only process long messages
-                continue
-
-            df = pms.df(msg)
-
-            if df == 17 or df == 18:
-                local_buffer_adsb_msg.append(msg)
-                local_buffer_adsb_ts.append(t)
-            elif df == 20 or df == 21:
-                local_buffer_ehs_msg.append(msg)
-                local_buffer_ehs_ts.append(t)
-            else:
-                continue
-
-
-        LOCK.acquire()
-        ADSB_MSG.extend(local_buffer_adsb_msg)
-        ADSB_TS.extend(local_buffer_adsb_ts)
-        COMMB_MSG.extend(local_buffer_ehs_msg)
-        COMMB_TS.extend(local_buffer_ehs_ts)
-        LOCK.release()
+from pyModeS.streamer.source import NetSource, RtlSdrSource
 
 
 # redirect all stdout to null, avoiding messing up with the screen
-sys.stdout = open(os.devnull, 'w')
+sys.stdout = open(os.devnull, "w")
 
-client = ModesClient(host=SERVER, port=PORT, rawtype=RAWTYPE)
-client.daemon = True
-client.start()
 
-stream = Stream(lat0=LAT0, lon0=LON0, dumpto=DUMPTO)
+support_rawtypes = ["raw", "beast", "skysense"]
 
-try:
-    screen = Screen(uncertainty=UNCERTAINTY)
-    screen.daemon = True
-    screen.start()
+parser = argparse.ArgumentParser()
+parser.add_argument(
+    "--source",
+    help='Choose data source, "rtlsdr" or "net"',
+    required=True,
+    default="net",
+)
+parser.add_argument(
+    "--connect",
+    help="Define server, port and data type. Supported data types are: %s"
+    % support_rawtypes,
+    nargs=3,
+    metavar=("SERVER", "PORT", "DATATYPE"),
+    default=None,
+    required=False,
+)
+parser.add_argument(
+    "--latlon",
+    help="Receiver latitude and longitude, needed for the surface position, default none",
+    nargs=2,
+    metavar=("LAT", "LON"),
+    default=None,
+    required=False,
+)
+parser.add_argument(
+    "--show-uncertainty",
+    dest="uncertainty",
+    help="Display uncertainty values, default off",
+    action="store_true",
+    required=False,
+    default=False,
+)
+parser.add_argument(
+    "--dumpto",
+    help="Folder to dump decoded output, default none",
+    required=False,
+    default=None,
+)
+args = parser.parse_args()
 
-    while True:
-        if len(ADSB_MSG) > 200:
-            LOCK.acquire()
-            stream.process_raw(ADSB_TS, ADSB_MSG, COMMB_TS, COMMB_MSG)
-            ADSB_MSG = []
-            ADSB_TS = []
-            COMMB_MSG = []
-            COMMB_TS = []
-            LOCK.release()
+SOURCE = args.source
+LATLON = args.latlon
+UNCERTAINTY = args.uncertainty
+DUMPTO = args.dumpto
 
-        acs = stream.get_aircraft()
-        try:
-            screen.update_data(acs)
-            screen.update()
-            time.sleep(0.02)
-        except KeyboardInterrupt:
-            raise
-        except:
-            continue
+if SOURCE == "rtlsdr":
+    pass
+elif SOURCE == "net":
+    if args.connect is None:
+        print("Error: --connect argument must not be empty.")
+    else:
+        SERVER, PORT, DATATYPE = args.connect
+        if DATATYPE not in support_rawtypes:
+            print("Data type not supported, avaiable ones are %s" % support_rawtypes)
 
-except KeyboardInterrupt:
-    sys.exit(0)
+else:
+    print('Source must be "rtlsdr" or "net".')
+    sys.exit(1)
 
-finally:
+if DUMPTO is not None:
+    # append to current folder except root is given
+    if DUMPTO[0] != "/":
+        DUMPTO = os.getcwd() + "/" + DUMPTO
+
+    if not os.path.isdir(DUMPTO):
+        print("Error: dump folder (%s) does not exist" % DUMPTO)
+        sys.exit(1)
+
+
+# raw_event = multiprocessing.Event()
+# ac_event = multiprocessing.Event()
+# raw_queue = multiprocessing.Queue()
+# ac_queue = multiprocessing.Queue()
+
+raw_pipe_in, raw_pipe_out = multiprocessing.Pipe()
+ac_pipe_in, ac_pipe_out = multiprocessing.Pipe()
+stop_flag = multiprocessing.Value("b", False)
+
+if SOURCE == "net":
+    source = NetSource(host=SERVER, port=PORT, rawtype=DATATYPE)
+elif SOURCE == "rtlsdr":
+    source = RtlSdrSource()
+
+
+recv_process = multiprocessing.Process(target=source.run, args=(raw_pipe_in, stop_flag))
+
+
+decode = Decode(latlon=LATLON, dumpto=DUMPTO)
+decode_process = multiprocessing.Process(
+    target=decode.run, args=(raw_pipe_out, ac_pipe_in)
+)
+
+screen = Screen(uncertainty=UNCERTAINTY)
+screen_process = multiprocessing.Process(target=screen.run, args=(ac_pipe_out,))
+
+
+def closeall(signal, frame):
+    print("KeyboardInterrupt (ID: {}). Cleaning up...".format(signal))
+    stop_flag.value = True
     curses.endwin()
+    recv_process.terminate()
+    decode_process.terminate()
+    screen_process.terminate()
+    recv_process.join()
+    decode_process.join()
+    screen_process.join()
+    exit(0)
+
+
+signal.signal(signal.SIGINT, closeall)
+
+recv_process.start()
+decode_process.start()
+screen_process.start()

pyModeS/streamer/screen.py

@@ -1,46 +1,46 @@
 from __future__ import print_function, division
-import os
 import curses
 import numpy as np
 import time
-from threading import Thread
+import threading
 
 COLUMNS = [
-    ('call', 10),
-    ('lat', 10),
-    ('lon', 10),
-    ('alt', 7),
-    ('gs', 5),
-    ('tas', 5),
-    ('ias', 5),
-    ('mach', 7),
-    ('roc', 7),
-    ('trk', 10),
-    ('hdg', 10),
-    ('live', 6),
+    ("call", 10),
+    ("lat", 10),
+    ("lon", 10),
+    ("alt", 7),
+    ("gs", 5),
+    ("tas", 5),
+    ("ias", 5),
+    ("mach", 7),
+    ("roc", 7),
+    ("trk", 10),
+    ("hdg", 10),
+    ("live", 6),
 ]
 
 UNCERTAINTY_COLUMNS = [
-    ('|', 5),
-    ('ver', 4),
-    ('HPL', 5),
-    ('RCu', 5),
-    ('RCv', 5),
-    ('HVE', 5),
-    ('VVE', 5),
-    ('Rc', 4),
-    ('VPL', 5),
-    ('EPU', 5),
-    ('VEPU', 6),
-    ('HFOMr', 7),
-    ('VFOMr', 7),
-    ('PE_RCu', 8),
-    ('PE_VPL', 8),
+    ("|", 5),
+    ("ver", 4),
+    ("HPL", 5),
+    ("RCu", 5),
+    ("RCv", 5),
+    ("HVE", 5),
+    ("VVE", 5),
+    ("Rc", 4),
+    ("VPL", 5),
+    ("EPU", 5),
+    ("VEPU", 6),
+    ("HFOMr", 7),
+    ("VFOMr", 7),
+    ("PE_RCu", 8),
+    ("PE_VPL", 8),
 ]
 
-class Screen(Thread):
+
+class Screen(object):
     def __init__(self, uncertainty=False):
-        Thread.__init__(self)
+        super(Screen, self).__init__()
         self.screen = curses.initscr()
         curses.noecho()
         curses.mousemask(1)
@@ -55,16 +55,20 @@ class Screen(Thread):
         if uncertainty:
             self.columns.extend(UNCERTAINTY_COLUMNS)
 
-
     def reset_cursor_pos(self):
         self.screen.move(self.y, self.x)
 
-    def update_data(self, acs):
+    def update_ac(self, acs):
         self.acs = acs
 
     def draw_frame(self):
         self.screen.border(0)
-        self.screen.addstr(0, 2, "Online aircraft [%d] ('Ctrl+C' to exit, 'Enter' to lock one)" % len(self.acs))
+        self.screen.addstr(
+            0,
+            2,
+            "Online aircraft [%d] ('Ctrl+C' to exit, 'Enter' to lock one)"
+            % len(self.acs),
+        )
 
     def update(self):
         if len(self.acs) == 0:
@@ -81,21 +85,20 @@ class Screen(Thread):
 
         row = 1
 
-        header = '  icao'
+        header = "  icao"
         for c, cw in self.columns:
-            header += (cw-len(c))*' ' + c
+            header += (cw - len(c)) * " " + c
 
         # fill end with spaces
-        header += (self.scr_w - 2 - len(header)) * ' '
+        header += (self.scr_w - 2 - len(header)) * " "
 
         if len(header) > self.scr_w - 2:
-            header = header[:self.scr_w-3] + '>'
-
+            header = header[: self.scr_w - 3] + ">"
 
         self.screen.addstr(row, 1, header)
 
-        row +=1
-        self.screen.addstr(row, 1, '-'*(self.scr_w-2))
+        row += 1
+        self.screen.addstr(row, 1, "-" * (self.scr_w - 2))
 
         icaos = np.array(list(self.acs.keys()))
         icaos = np.sort(icaos)
@@ -105,10 +108,10 @@ class Screen(Thread):
             idx = row + self.offset - 3
 
             if idx > len(icaos) - 1:
-                line = ' '*(self.scr_w-2)
+                line = " " * (self.scr_w - 2)
 
             else:
-                line = ''
+                line = ""
 
                 icao = icaos[idx]
                 ac = self.acs[icao]
@@ -116,22 +119,22 @@ class Screen(Thread):
                 line += icao
 
                 for c, cw in self.columns:
-                    if c=='|':
-                        val = '|'
-                    elif c=='live':
-                        val = str(int(time.time() - ac[c]))+'s'
+                    if c == "|":
+                        val = "|"
+                    elif c == "live":
+                        val = str(ac[c] - int(time.time())) + "s"
                     elif ac[c] is None:
-                        val = ''
+                        val = ""
                     else:
                         val = ac[c]
                     val_str = str(val)
-                    line += (cw-len(val_str))*' ' + val_str
+                    line += (cw - len(val_str)) * " " + val_str
 
                 # fill end with spaces
-                line += (self.scr_w - 2 - len(line)) * ' '
+                line += (self.scr_w - 2 - len(line)) * " "
 
                 if len(line) > self.scr_w - 2:
-                    line = line[:self.scr_w-3] + '>'
+                    line = line[: self.scr_w - 3] + ">"
 
             if (icao is not None) and (self.lock_icao == icao):
                 self.screen.addstr(row, 1, line, curses.A_STANDOUT)
@@ -140,15 +143,15 @@ class Screen(Thread):
             else:
                 self.screen.addstr(row, 1, line)
 
-        self.screen.addstr(self.scr_h-3, 1, '-'*(self.scr_w-2))
+        self.screen.addstr(self.scr_h - 3, 1, "-" * (self.scr_w - 2))
 
         total_page = len(icaos) // (self.scr_h - 4) + 1
         current_page = self.offset // (self.scr_h - 4) + 1
-        self.screen.addstr(self.scr_h-2, 1, '(%d / %d)' % (current_page, total_page))
+        self.screen.addstr(self.scr_h - 2, 1, "(%d / %d)" % (current_page, total_page))
 
         self.reset_cursor_pos()
 
-    def run(self):
+    def kye_handling(self):
         self.draw_frame()
         self.scr_h, self.scr_w = self.screen.getmaxyx()
 
@@ -168,7 +171,7 @@ class Screen(Thread):
                     self.offset = offset_intent
                 else:
                     self.offset = 0
-            elif c == curses.KEY_DOWN :
+            elif c == curses.KEY_DOWN:
                 y_intent = self.y + 1
                 if y_intent < self.scr_h - 3:
                     self.y = y_intent
@@ -178,6 +181,30 @@ class Screen(Thread):
                     self.y = y_intent
             elif c == curses.KEY_ENTER or c == 10 or c == 13:
                 self.lock_icao = (self.screen.instr(self.y, 1, 6)).decode()
+            elif c == 27:  # escape key
+                self.lock_icao = None
             elif c == curses.KEY_F5:
                 self.screen.refresh()
                 self.draw_frame()
+
+    def run(self, ac_pipe_out):
+        local_buffer = []
+        key_thread = threading.Thread(target=self.kye_handling)
+        key_thread.start()
+
+        while True:
+            while ac_pipe_out.poll():
+                acs = ac_pipe_out.recv()
+                local_buffer.append(acs)
+
+            for acs in local_buffer:
+                self.update_ac(acs)
+
+            local_buffer = []
+
+            try:
+                self.update()
+            except:
+                pass
+
+            time.sleep(0.001)

pyModeS/streamer/source.py

@@ -0,0 +1,91 @@
+import pyModeS as pms
+from pyModeS.extra.tcpclient import TcpClient
+from pyModeS.extra.rtlreader import RtlReader
+
+
+class NetSource(TcpClient):
+    def __init__(self, host, port, rawtype):
+        super(NetSource, self).__init__(host, port, rawtype)
+        self.reset_local_buffer()
+
+    def reset_local_buffer(self):
+        self.local_buffer_adsb_msg = []
+        self.local_buffer_adsb_ts = []
+        self.local_buffer_commb_msg = []
+        self.local_buffer_commb_ts = []
+
+    def handle_messages(self, messages):
+
+        if self.stop_flag.value is True:
+            self.stop()
+            return
+
+        for msg, t in messages:
+            if len(msg) < 28:  # only process long messages
+                continue
+
+            df = pms.df(msg)
+
+            if df == 17 or df == 18:
+                self.local_buffer_adsb_msg.append(msg)
+                self.local_buffer_adsb_ts.append(t)
+            elif df == 20 or df == 21:
+                self.local_buffer_commb_msg.append(msg)
+                self.local_buffer_commb_ts.append(t)
+            else:
+                continue
+
+        if len(self.local_buffer_adsb_msg) > 1:
+            self.raw_pipe_in.send(
+                {
+                    "adsb_ts": self.local_buffer_adsb_ts,
+                    "adsb_msg": self.local_buffer_adsb_msg,
+                    "commb_ts": self.local_buffer_commb_ts,
+                    "commb_msg": self.local_buffer_commb_msg,
+                }
+            )
+            self.reset_local_buffer()
+
+
+class RtlSdrSource(RtlReader):
+    def __init__(self):
+        super(RtlSdrSource, self).__init__()
+        self.reset_local_buffer()
+
+    def reset_local_buffer(self):
+        self.local_buffer_adsb_msg = []
+        self.local_buffer_adsb_ts = []
+        self.local_buffer_commb_msg = []
+        self.local_buffer_commb_ts = []
+
+    def handle_messages(self, messages):
+
+        if self.stop_flag.value is True:
+            self.stop()
+            return
+
+        for msg, t in messages:
+            if len(msg) < 28:  # only process long messages
+                continue
+
+            df = pms.df(msg)
+
+            if df == 17 or df == 18:
+                self.local_buffer_adsb_msg.append(msg)
+                self.local_buffer_adsb_ts.append(t)
+            elif df == 20 or df == 21:
+                self.local_buffer_commb_msg.append(msg)
+                self.local_buffer_commb_ts.append(t)
+            else:
+                continue
+
+        if len(self.local_buffer_adsb_msg) > 1:
+            self.raw_pipe_in.send(
+                {
+                    "adsb_ts": self.local_buffer_adsb_ts,
+                    "adsb_msg": self.local_buffer_adsb_msg,
+                    "commb_ts": self.local_buffer_commb_ts,
+                    "commb_msg": self.local_buffer_commb_msg,
+                }
+            )
+            self.reset_local_buffer()

pyModeS/streamer/stream.py

@@ -1,255 +0,0 @@
-from __future__ import absolute_import, print_function, division
-import os
-import time
-import datetime
-import csv
-import pyModeS as pms
-
-class Stream():
-    def __init__(self, lat0, lon0, dumpto=None):
-
-        self.acs = dict()
-
-        self.lat0 = lat0
-        self.lon0 = lon0
-
-        self.t = 0
-        self.cache_timeout = 60     # seconds
-
-
-        if dumpto is not None and os.path.isdir(dumpto):
-            self.dumpto = dumpto
-        else:
-            self.dumpto = None
-
-
-    def process_raw(self, adsb_ts, adsb_msgs, commb_ts, commb_msgs, tnow=None):
-        """process a chunk of adsb and commb messages recieved in the same
-        time period.
-        """
-        if tnow is None:
-            tnow = time.time()
-
-        self.t = tnow
-
-        local_updated_acs_buffer = []
-        output_buffer = []
-
-        # process adsb message
-        for t, msg in zip(adsb_ts, adsb_msgs):
-            icao = pms.icao(msg)
-            tc = pms.adsb.typecode(msg)
-
-            if icao not in self.acs:
-                self.acs[icao] = {
-                    'live': None,
-                    'call': None,
-                    'lat': None,
-                    'lon': None,
-                    'alt': None,
-                    'gs': None,
-                    'trk': None,
-                    'roc': None,
-                    'tas': None,
-                    'roll': None,
-                    'rtrk': None,
-                    'ias': None,
-                    'mach': None,
-                    'hdg': None,
-                    'ver' : None,
-                    'HPL' : None,
-                    'RCu' : None,
-                    'RCv' : None,
-                    'HVE' : None,
-                    'VVE' : None,
-                    'Rc' : None,
-                    'VPL' : None,
-                    'EPU' : None,
-                    'VEPU' : None,
-                    'HFOMr' : None,
-                    'VFOMr' : None,
-                    'PE_RCu' : None,
-                    'PE_VPL' : None,
-                }
-
-            self.acs[icao]['t'] = t
-            self.acs[icao]['live'] = int(t)
-
-            if 1 <= tc <= 4:
-                cs = pms.adsb.callsign(msg)
-                self.acs[icao]['call'] = cs
-                output_buffer.append([t, icao, 'cs', cs])
-
-            if (5 <= tc <= 8) or (tc == 19):
-                vdata = pms.adsb.velocity(msg)
-                if vdata is None:
-                    continue
-
-                spd, trk, roc, tag = vdata
-                if tag != 'GS':
-                    continue
-                if (spd is None) or (trk is None):
-                    continue
-
-                self.acs[icao]['gs'] = spd
-                self.acs[icao]['trk'] = trk
-                self.acs[icao]['roc'] = roc
-                self.acs[icao]['tv'] = t
-
-                output_buffer.append([t, icao, 'gs', spd])
-                output_buffer.append([t, icao, 'trk', trk])
-                output_buffer.append([t, icao, 'roc', roc])
-
-
-            if (5 <= tc <= 18):
-                oe = pms.adsb.oe_flag(msg)
-                self.acs[icao][oe] = msg
-                self.acs[icao]['t'+str(oe)] = t
-
-                if ('tpos' in self.acs[icao]) and (t - self.acs[icao]['tpos'] < 180):
-                    # use single message decoding
-                    rlat = self.acs[icao]['lat']
-                    rlon = self.acs[icao]['lon']
-                    latlon = pms.adsb.position_with_ref(msg, rlat, rlon)
-                elif ('t0' in self.acs[icao]) and ('t1' in self.acs[icao]) and \
-                     (abs(self.acs[icao]['t0'] - self.acs[icao]['t1']) < 10):
-                    # use multi message decoding
-                    try:
-                        latlon = pms.adsb.position(
-                            self.acs[icao][0],
-                            self.acs[icao][1],
-                            self.acs[icao]['t0'],
-                            self.acs[icao]['t1'],
-                            self.lat0, self.lon0
-                            )
-                    except:
-                        # mix of surface and airborne position message
-                        continue
-                else:
-                    latlon = None
-
-                if latlon is not None:
-                    self.acs[icao]['tpos'] = t
-                    self.acs[icao]['lat'] = latlon[0]
-                    self.acs[icao]['lon'] = latlon[1]
-
-                    alt = pms.adsb.altitude(msg)
-                    self.acs[icao]['alt'] = alt
-
-                    output_buffer.append([t, icao, 'lat', latlon[0]])
-                    output_buffer.append([t, icao, 'lon', latlon[1]])
-                    output_buffer.append([t, icao, 'alt', alt])
-
-                    local_updated_acs_buffer.append(icao)
-
-            # Uncertainty & accuracy
-            ac = self.acs[icao]
-
-            if 9 <= tc <= 18:
-                ac['nic_bc'] = pms.adsb.nic_b(msg)
-
-            if (5 <= tc <= 8) or (9 <= tc <= 18) or (20 <= tc <= 22):
-                ac['HPL'], ac['RCu'], ac['RCv'] = pms.adsb.nuc_p(msg)
-
-                if (ac['ver'] == 1) and ('nic_s' in ac.keys()):
-                    ac['Rc'], ac['VPL'] = pms.adsb.nic_v1(msg, ac['nic_s'])
-                elif (ac['ver'] == 2) and ('nic_a' in ac.keys()) and ('nic_bc' in ac.keys()):
-                    ac['Rc'] = pms.adsb.nic_v2(msg, ac['nic_a'], ac['nic_bc'])
-
-            if tc == 19:
-                ac['HVE'], ac['VVE'] = pms.adsb.nuc_v(msg)
-                if ac['ver'] in [1, 2]:
-                    ac['HFOMr'], ac['VFOMr'] = pms.adsb.nac_v(msg)
-
-            if tc == 29:
-                ac['PE_RCu'], ac['PE_VPL'], ac['base'] = pms.adsb.sil(msg, ac['ver'])
-                ac['EPU'], ac['VEPU'] = pms.adsb.nac_p(msg)
-
-            if tc == 31:
-                ac['ver']  = pms.adsb.version(msg)
-                ac['EPU'], ac['VEPU'] = pms.adsb.nac_p(msg)
-                ac['PE_RCu'], ac['PE_VPL'], ac['sil_base'] = pms.adsb.sil(msg, ac['ver'])
-
-                if ac['ver']  == 1:
-                    ac['nic_s'] = pms.adsb.nic_s(msg)
-                elif ac['ver']  == 2:
-                    ac['nic_a'], ac['nic_bc'] = pms.adsb.nic_a_c(msg)
-
-
-        # process commb message
-        for t, msg in zip(commb_ts, commb_msgs):
-            icao = pms.icao(msg)
-
-            if icao not in self.acs:
-                continue
-
-            bds = pms.bds.infer(msg)
-
-            if bds == 'BDS50':
-                roll50 = pms.commb.roll50(msg)
-                trk50 = pms.commb.trk50(msg)
-                rtrk50 = pms.commb.rtrk50(msg)
-                gs50 = pms.commb.gs50(msg)
-                tas50 = pms.commb.tas50(msg)
-
-                self.acs[icao]['t50'] = t
-                if tas50:
-                    self.acs[icao]['tas'] = tas50
-                    output_buffer.append([t, icao, 'tas50', tas50])
-                if roll50:
-                    self.acs[icao]['roll'] = roll50
-                    output_buffer.append([t, icao, 'roll50', roll50])
-                if rtrk50:
-                    self.acs[icao]['rtrk'] = rtrk50
-                    output_buffer.append([t, icao, 'rtrk50', rtrk50])
-
-                if trk50:
-                    output_buffer.append([t, icao, 'trk50', trk50])
-                if gs50:
-                    output_buffer.append([t, icao, 'gs50', gs50])
-
-            elif bds == 'BDS60':
-                ias60 = pms.commb.ias60(msg)
-                hdg60 = pms.commb.hdg60(msg)
-                mach60 = pms.commb.mach60(msg)
-                roc60baro = pms.commb.vr60baro(msg)
-                roc60ins = pms.commb.vr60ins(msg)
-
-                if ias60 or hdg60 or mach60:
-                    self.acs[icao]['t60'] = t
-                if ias60:
-                    self.acs[icao]['ias'] = ias60
-                if hdg60:
-                    self.acs[icao]['hdg'] = hdg60
-                if mach60:
-                    self.acs[icao]['mach'] = mach60
-
-                if roc60baro:
-                    output_buffer.append([t, icao, 'roc60baro', roc60baro])
-                if roc60ins:
-                    output_buffer.append([t, icao, 'roc60ins', roc60ins])
-
-        # clear up old data
-        for icao in list(self.acs.keys()):
-            if self.t - self.acs[icao]['live'] > self.cache_timeout:
-                del self.acs[icao]
-                continue
-
-        if self.dumpto is not None:
-            dh = str(datetime.datetime.now().strftime("%Y%m%d_%H"))
-            fn = self.dumpto + '/pymodes_dump_%s.csv' % dh
-            output_buffer.sort(key=lambda x: x[0])
-            with open(fn, "a") as f:
-                writer = csv.writer(f)
-                writer.writerows(output_buffer)
-
-        return
-
-    def get_aircraft(self):
-        """all aircraft that are stored in memeory"""
-        acs = self.acs
-        icaos = list(acs.keys())
-        for icao in icaos:
-            if acs[icao]['lat'] is None:
-                acs.pop(icao)
-        return acs

setup.py

@@ -6,7 +6,7 @@ https://github.com/pypa/sampleproject
 
 Steps for deploying a new verison:
 1. Increase the version number
-2. remove the old deployment under [dist] folder
+2. remove the old deployment under [dist] and [build] folder
 3. run: python setup.py sdist
    run: python setup.py bdist_wheel --universal
 4. twine upload dist/*
@@ -14,6 +14,14 @@ Steps for deploying a new verison:
 
 # Always prefer setuptools over distutils
 from setuptools import setup, find_packages
+
+# Compile some parts
+from setuptools.extension import Extension
+from Cython.Build import cythonize
+
+extensions = [Extension("pyModeS.decoder.c_common", ["pyModeS/decoder/c_common.pyx"])]
+
+
 # To use a consistent encoding
 from codecs import open
 from os import path
@@ -21,73 +29,55 @@ from os import path
 here = path.abspath(path.dirname(__file__))
 
 # Get the long description from the README file
-with open(path.join(here, 'README.rst'), encoding='utf-8') as f:
+with open(path.join(here, "README.rst"), encoding="utf-8") as f:
     long_description = f.read()
 
 setup(
-    name='pyModeS',
-
+    name="pyModeS",
     # Versions should comply with PEP440.  For a discussion on single-sourcing
     # the version across setup.py and the project code, see
     # https://packaging.python.org/en/latest/single_source_version.html
-    version='2.0',
-
-    description='Python ADS-B/Mode-S Decoder',
+    version="2.4",
+    description="Python Mode-S and ADS-B Decoder",
     long_description=long_description,
-
     # The project's main homepage.
-    url='https://github.com/junzis/pyModes',
-
+    url="https://github.com/junzis/pyModeS",
     # Author details
-    author='Junzi Sun',
-    author_email='j.sun-1@tudelft.nl',
-
+    author="Junzi Sun",
+    author_email="j.sun-1@tudelft.nl",
     # Choose your license
-    license='GNU GPL v3',
-
+    license="GNU GPL v3",
     # See https://pypi.python.org/pypi?%3Aaction=list_classifiers
     classifiers=[
         # How mature is this project? Common values are
         #   3 - Alpha
         #   4 - Beta
         #   5 - Production/Stable
-        'Development Status :: 3 - Alpha',
-
+        "Development Status :: 4 - Beta",
         # Indicate who your project is intended for
-        'Intended Audience :: Developers',
-        'Topic :: Software Development :: Build Tools',
-
+        "Intended Audience :: Developers",
+        "Topic :: Software Development :: Libraries",
         # Pick your license as you wish (should match "license" above)
-        'License :: OSI Approved :: MIT License',
-
+        "License :: OSI Approved :: GNU General Public License v3 (GPLv3)",
         # Specify the Python versions you support here. In particular, ensure
         # that you indicate whether you support Python 2, Python 3 or both.
-        'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.7',
-        'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
-        'Programming Language :: Python :: 3.4',
-        'Programming Language :: Python :: 3.5',
-		'Programming Language :: Python :: 3.6',
+        "Programming Language :: Python :: 2",
+        "Programming Language :: Python :: 3",
     ],
-
+    ext_modules=cythonize(extensions),
     # What does your project relate to?
-    keywords='Mode-S ADS-B EHS decoding',
-
+    keywords="Mode-S ADS-B EHS ELS Comm-B",
     # You can just specify the packages manually here if your project is
     # simple. Or you can use find_packages().
-    packages=find_packages(exclude=['contrib', 'docs', 'tests']),
-
+    packages=find_packages(exclude=["contrib", "docs", "tests"]),
     # Alternatively, if you want to distribute just a my_module.py, uncomment
     # this:
     #   py_modules=["my_module"],
-
     # List run-time dependencies here.  These will be installed by pip when
     # your project is installed. For an analysis of "install_requires" vs pip's
     # requirements files see:
     # https://packaging.python.org/en/latest/requirements.html
-    install_requires=['numpy', 'argparse'],
-
+    install_requires=["numpy", "argparse", "pyzmq", "pyrtlsdr"],
     # List additional groups of dependencies here (e.g. development
     # dependencies). You can install these using the following syntax,
     # for example:
@@ -96,20 +86,17 @@ setup(
     #     'dev': ['check-manifest'],
     #     'test': ['coverage'],
     # },
-
     # If there are data files included in your packages that need to be
     # installed, specify them here.  If using Python 2.6 or less, then these
     # have to be included in MANIFEST.in as well.
     # package_data={
     #     'sample': ['package_data.dat'],
     # },
-
     # Although 'package_data' is the preferred approach, in some case you may
     # need to place data files outside of your packages. See:
     # http://docs.python.org/3.4/distutils/setupscript.html#installing-additional-files # noqa
     # In this case, 'data_file' will be installed into '<sys.prefix>/my_data'
     # data_files=[('my_data', ['data/data_file'])],
-
     # To provide executable scripts, use entry points in preference to the
     # "scripts" keyword. Entry points provide cross-platform support and allow
     # pip to create the appropriate form of executable for the target platform.
@@ -118,6 +105,5 @@ setup(
     #         'sample=sample:main',
     #     ],
     # },
-
-    scripts=['pyModeS/streamer/modeslive'],
+    scripts=["pyModeS/streamer/modeslive"],
 )

tests/benchmark.py

@@ -0,0 +1,130 @@
+import sys
+import time
+import pandas as pd
+from tqdm import tqdm
+from pyModeS.decoder import adsb
+
+fin = sys.argv[1]
+
+df = pd.read_csv(fin, names=["ts", "df", "icao", "msg"])
+df_adsb = df[df["df"] == 17].copy()
+
+total = df_adsb.shape[0]
+
+
+def native():
+
+    from pyModeS.decoder import common
+
+    # airborne position
+    m_air_0 = None
+    m_air_1 = None
+
+    # surface position
+    m_surf_0 = None
+    m_surf_1 = None
+
+    for i, r in tqdm(df_adsb.iterrows(), total=total):
+        ts = r.ts
+        m = r.msg
+
+        downlink_format = common.df(m)
+        crc = common.crc(m)
+        icao = adsb.icao(m)
+        tc = adsb.typecode(m)
+
+        if 1 <= tc <= 4:
+            category = adsb.category(m)
+            callsign = adsb.callsign(m)
+        if tc == 19:
+            velocity = adsb.velocity(m)
+
+        if 5 <= tc <= 8:
+            if adsb.oe_flag(m):
+                m_surf_1 = m
+                t1 = ts
+            else:
+                m_surf_0 = m
+                t0 = ts
+
+            if m_surf_0 and m_surf_1:
+                position = adsb.surface_position(
+                    m_surf_0, m_surf_1, t0, t1, 50.01, 4.35
+                )
+                altitude = adsb.altitude(m)
+
+        if 9 <= tc <= 18:
+            if adsb.oe_flag(m):
+                m_air_1 = m
+                t1 = ts
+            else:
+                m_air_0 = m
+                t0 = ts
+
+            if m_air_0 and m_air_1:
+                position = adsb.position(m_air_0, m_air_1, t0, t1)
+                altitude = adsb.altitude(m)
+
+
+def cython():
+
+    from pyModeS.decoder import c_common as common
+
+    # airborne position
+    m_air_0 = None
+    m_air_1 = None
+
+    # surface position
+    m_surf_0 = None
+    m_surf_1 = None
+
+    for i, r in tqdm(df_adsb.iterrows(), total=total):
+        ts = r.ts
+        m = r.msg
+
+        downlink_format = common.df(m)
+        crc = common.crc(m)
+        icao = adsb.icao(m)
+        tc = adsb.typecode(m)
+
+        if 1 <= tc <= 4:
+            category = adsb.category(m)
+            callsign = adsb.callsign(m)
+        if tc == 19:
+            velocity = adsb.velocity(m)
+
+        if 5 <= tc <= 8:
+            if adsb.oe_flag(m):
+                m_surf_1 = m
+                t1 = ts
+            else:
+                m_surf_0 = m
+                t0 = ts
+
+            if m_surf_0 and m_surf_1:
+                position = adsb.surface_position(
+                    m_surf_0, m_surf_1, t0, t1, 50.01, 4.35
+                )
+                altitude = adsb.altitude(m)
+
+        if 9 <= tc <= 18:
+            if adsb.oe_flag(m):
+                m_air_1 = m
+                t1 = ts
+            else:
+                m_air_0 = m
+                t0 = ts
+
+            if m_air_0 and m_air_1:
+                position = adsb.position(m_air_0, m_air_1, t0, t1)
+                altitude = adsb.altitude(m)
+
+
+if __name__ == "__main__":
+    t1 = time.time()
+    native()
+    dt1 = time.time() - t1
+
+    t2 = time.time()
+    cython()
+    dt2 = time.time() - t2

tests/sample_run_adsb.py

@@ -1,41 +1,46 @@
-from __future__ import print_function
-from pyModeS import adsb, ehs
+import sys
+import time
+import csv
+
+if len(sys.argv) > 1 and sys.argv[1] == "cython":
+    from pyModeS.c_decoder import adsb
+else:
+    from pyModeS.decoder import adsb
+
+print("===== Decode ADS-B sample data=====")
+
+f = open("tests/data/sample_data_adsb.csv", "rt")
+
+msg0 = None
+msg1 = None
+
+tstart = time.time()
+for i, r in enumerate(csv.reader(f)):
+
+    ts = int(r[0])
+    m = r[1].encode()
+
+    icao = adsb.icao(m)
+    tc = adsb.typecode(m)
+
+    if 1 <= tc <= 4:
+        print(ts, m, icao, tc, adsb.category(m), adsb.callsign(m))
+    if tc == 19:
+        print(ts, m, icao, tc, adsb.velocity(m))
+    if 5 <= tc <= 18:
+        if adsb.oe_flag(m):
+            msg1 = m
+            t1 = ts
+        else:
+            msg0 = m
+            t0 = ts
+
+        if msg0 and msg1:
+            pos = adsb.position(msg0, msg1, t0, t1)
+            alt = adsb.altitude(m)
+            print(ts, m, icao, tc, pos, alt)
 
 
-# === Decode sample data file ===
+dt = time.time() - tstart
 
-def adsb_decode_all(n=None):
-    print("===== Decode ADS-B sample data=====")
-    import csv
-    f = open('tests/data/sample_data_adsb.csv', 'rt')
-
-    msg0 = None
-    msg1 = None
-
-    for i, r in enumerate(csv.reader(f)):
-        if n and i > n:
-            break
-
-        ts = r[0]
-        m = r[1]
-        icao = adsb.icao(m)
-        tc = adsb.typecode(m)
-        if 1 <= tc <= 4:
-            print(ts, m, icao, tc, adsb.category(m), adsb.callsign(m))
-        if tc == 19:
-            print(ts, m, icao, tc, adsb.velocity(m))
-        if 5 <= tc <= 18:
-            if adsb.oe_flag(m):
-                msg1 = m
-                t1 = ts
-            else:
-                msg0 = m
-                t0 = ts
-
-            if msg0 and msg1:
-                pos = adsb.position(msg0, msg1, t0, t1)
-                alt = adsb.altitude(m)
-                print(ts, m, icao, tc, pos, alt)
-
-if __name__ == '__main__':
-    adsb_decode_all(n=100)
+print("Execution time: {} seconds".format(dt))

tests/sample_run_commb.py

@@ -3,30 +3,48 @@ from pyModeS import commb, common, bds
 
 # === Decode sample data file ===
 
+
 def bds_info(BDS, m):
     if BDS == "BDS10":
         info = [commb.ovc10(m)]
 
     elif BDS == "BDS17":
-        info = ([i[-2:] for i in commb.cap17(m)])
+        info = [i[-2:] for i in commb.cap17(m)]
 
     elif BDS == "BDS20":
         info = [commb.cs20(m)]
 
     elif BDS == "BDS40":
-        info = (commb.alt40mcp(m), commb.alt40fms(m), commb.p40baro(m))
+        info = (commb.selalt40mcp(m), commb.selalt40fms(m), commb.p40baro(m))
 
     elif BDS == "BDS44":
         info = (commb.wind44(m), commb.temp44(m), commb.p44(m), commb.hum44(m))
 
     elif BDS == "BDS44REV":
-        info = (commb.wind44(m, rev=True), commb.temp44(m, rev=True), commb.p44(m, rev=True), commb.hum44(m, rev=True))
+        info = (
+            commb.wind44(m, rev=True),
+            commb.temp44(m, rev=True),
+            commb.p44(m, rev=True),
+            commb.hum44(m, rev=True),
+        )
 
     elif BDS == "BDS50":
-        info = (commb.roll50(m), commb.trk50(m), commb.gs50(m), commb.rtrk50(m), commb.tas50(m))
+        info = (
+            commb.roll50(m),
+            commb.trk50(m),
+            commb.gs50(m),
+            commb.rtrk50(m),
+            commb.tas50(m),
+        )
 
     elif BDS == "BDS60":
-        info = (commb.hdg60(m), commb.ias60(m), commb.mach60(m), commb.vr60baro(m), commb.vr60ins(m))
+        info = (
+            commb.hdg60(m),
+            commb.ias60(m),
+            commb.mach60(m),
+            commb.vr60baro(m),
+            commb.vr60ins(m),
+        )
 
     else:
         info = None
@@ -39,8 +57,7 @@ def commb_decode_all(df, n=None):
 
     print("===== Decode Comm-B sample data (DF=%s)=====" % df)
 
-    f = open('tests/data/sample_data_commb_df%s.csv' % df, 'rt')
-
+    f = open("tests/data/sample_data_commb_df%s.csv" % df, "rt")
 
     for i, r in enumerate(csv.reader(f)):
         if n and i > n:
@@ -55,21 +72,21 @@ def commb_decode_all(df, n=None):
         code = common.altcode(m) if df == 20 else common.idcode(m)
 
         if not BDS:
-            print(ts, m, icao, df, '%5s'%code, 'UNKNOWN')
+            print(ts, m, icao, df, "%5s" % code, "UNKNOWN")
             continue
 
         if len(BDS.split(",")) > 1:
-            print(ts, m, icao, df, '%5s' % code, end=' ')
+            print(ts, m, icao, df, "%5s" % code, end=" ")
             for i, _bds in enumerate(BDS.split(",")):
                 if i == 0:
                     print(_bds, *bds_info(_bds, m))
                 else:
-                    print(' ' * 55, _bds, *bds_info(_bds, m))
+                    print(" " * 55, _bds, *bds_info(_bds, m))
 
         else:
-            print(ts, m, icao, df, '%5s'%code, BDS, *bds_info(BDS, m))
+            print(ts, m, icao, df, "%5s" % code, BDS, *bds_info(BDS, m))
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     commb_decode_all(df=20, n=100)
     commb_decode_all(df=21, n=100)

tests/test_adsb.py

@@ -2,12 +2,13 @@ from pyModeS import adsb
 
 # === TEST ADS-B package ===
 
+
 def test_adsb_icao():
     assert adsb.icao("8D406B902015A678D4D220AA4BDA") == "406B90"
 
 
 def test_adsb_category():
-    assert adsb.category("8D406B902015A678D4D220AA4BDA") == 5
+    assert adsb.category("8D406B902015A678D4D220AA4BDA") == 0
 
 
 def test_adsb_callsign():
@@ -15,9 +16,22 @@ def test_adsb_callsign():
 
 
 def test_adsb_position():
-    pos = adsb.position("8D40058B58C901375147EFD09357",
-                        "8D40058B58C904A87F402D3B8C59",
-                        1446332400, 1446332405)
+    pos = adsb.position(
+        "8D40058B58C901375147EFD09357",
+        "8D40058B58C904A87F402D3B8C59",
+        1446332400,
+        1446332405,
+    )
+    assert pos == (49.81755, 6.08442)
+
+
+def test_adsb_position_swap_odd_even():
+    pos = adsb.position(
+        "8D40058B58C904A87F402D3B8C59",
+        "8D40058B58C901375147EFD09357",
+        1446332405,
+        1446332400,
+    )
     assert pos == (49.81755, 6.08442)
 
 
@@ -29,27 +43,29 @@ def test_adsb_position_with_ref():
 
 
 def test_adsb_airborne_position_with_ref():
-    pos = adsb.airborne_position_with_ref("8D40058B58C901375147EFD09357",
-                                          49.0, 6.0)
+    pos = adsb.airborne_position_with_ref("8D40058B58C901375147EFD09357", 49.0, 6.0)
     assert pos == (49.82410, 6.06785)
-    pos = adsb.airborne_position_with_ref("8D40058B58C904A87F402D3B8C59",
-                                          49.0, 6.0)
+    pos = adsb.airborne_position_with_ref("8D40058B58C904A87F402D3B8C59", 49.0, 6.0)
     assert pos == (49.81755, 6.08442)
 
 
 def test_adsb_surface_position_with_ref():
-    pos = adsb.surface_position_with_ref("8FC8200A3AB8F5F893096B000000",
-                                         -43.5, 172.5)
+    pos = adsb.surface_position_with_ref("8FC8200A3AB8F5F893096B000000", -43.5, 172.5)
     assert pos == (-43.48564, 172.53942)
 
 
 def test_adsb_surface_position():
-    pos = adsb.surface_position("8CC8200A3AC8F009BCDEF2000000",
-                                "8FC8200A3AB8F5F893096B000000",
-                                0, 2,
-                                -43.496, 172.558)
+    pos = adsb.surface_position(
+        "8CC8200A3AC8F009BCDEF2000000",
+        "8FC8200A3AB8F5F893096B000000",
+        0,
+        2,
+        -43.496,
+        172.558,
+    )
     assert pos == (-43.48564, 172.53942)
 
+
 def test_adsb_alt():
     assert adsb.altitude("8D40058B58C901375147EFD09357") == 39000
 
@@ -58,10 +74,10 @@ def test_adsb_velocity():
     vgs = adsb.velocity("8D485020994409940838175B284F")
     vas = adsb.velocity("8DA05F219B06B6AF189400CBC33F")
     vgs_surface = adsb.velocity("8FC8200A3AB8F5F893096B000000")
-    assert vgs == (159, 182.88, -832, 'GS')
-    assert vas == (375, 243.98, -2304, 'TAS')
-    assert vgs_surface == (19.0, 42.2, 0 , 'GS')
-    assert adsb.altitude_diff('8D485020994409940838175B284F') == 550
+    assert vgs == (159, 182.88, -832, "GS")
+    assert vas == (375, 243.98, -2304, "TAS")
+    assert vgs_surface == (19.0, 42.2, 0, "GS")
+    assert adsb.altitude_diff("8D485020994409940838175B284F") == 550
 
 
 # def test_nic():

tests/test_bds_inference.py

@@ -1,20 +1,36 @@
 from pyModeS import bds
 
-def test_bds_infer():
-    assert bds.infer("8D406B902015A678D4D220AA4BDA") == 'BDS08'
-    assert bds.infer("8FC8200A3AB8F5F893096B000000") == 'BDS06'
-    assert bds.infer("8D40058B58C901375147EFD09357") == 'BDS05'
-    assert bds.infer("8D485020994409940838175B284F") == 'BDS09'
 
-    assert bds.infer("A800178D10010080F50000D5893C") == 'BDS10'
-    assert bds.infer("A0000638FA81C10000000081A92F") == 'BDS17'
-    assert bds.infer("A0001838201584F23468207CDFA5") == 'BDS20'
-    assert bds.infer("A0001839CA3800315800007448D9") == 'BDS40'
-    assert bds.infer("A000139381951536E024D4CCF6B5") == 'BDS50'
-    assert bds.infer("A00004128F39F91A7E27C46ADC21") == 'BDS60'
+def test_bds_infer():
+    assert bds.infer("8D406B902015A678D4D220AA4BDA") == "BDS08"
+    assert bds.infer("8FC8200A3AB8F5F893096B000000") == "BDS06"
+    assert bds.infer("8D40058B58C901375147EFD09357") == "BDS05"
+    assert bds.infer("8D485020994409940838175B284F") == "BDS09"
+
+    assert bds.infer("A800178D10010080F50000D5893C") == "BDS10"
+    assert bds.infer("A0000638FA81C10000000081A92F") == "BDS17"
+    assert bds.infer("A0001838201584F23468207CDFA5") == "BDS20"
+    assert bds.infer("A0001839CA3800315800007448D9") == "BDS40"
+    assert bds.infer("A000139381951536E024D4CCF6B5") == "BDS50"
+    assert bds.infer("A00004128F39F91A7E27C46ADC21") == "BDS60"
 
 
 def test_bds_is50or60():
     assert bds.is50or60("A0001838201584F23468207CDFA5", 0, 0, 0) == None
-    assert bds.is50or60("A0000000FFDA9517000464000000", 182, 237, 1250) == 'BDS50'
-    assert bds.is50or60("A0000000919A5927E23444000000", 413, 54, 18700) == 'BDS60'
+    assert bds.is50or60("A0000000FFDA9517000464000000", 182, 237, 1250) == "BDS50"
+    assert bds.is50or60("A0000000919A5927E23444000000", 413, 54, 18700) == "BDS60"
+
+
+def test_surface_position():
+    msg0 = "8FE48C033A9FA184B934E744C6FD"
+    msg1 = "8FE48C033A9FA68F7C3D39B1C2F0"
+
+    t0 = 1565608663102
+    t1 = 1565608666214
+
+    lat_ref = -23.4265448
+    lon_ref = -46.4816258
+
+    lat, lon = bds.bds06.surface_position(msg0, msg1, t0, t1, lat_ref, lon_ref)
+
+    assert abs(lon_ref - lon) < 0.05

tests/test_c_common.py

@@ -0,0 +1,60 @@
+from pyModeS.decoder import c_common as common
+
+
+def test_conversions():
+    assert common.hex2bin("6E406B") == "011011100100000001101011"
+
+
+def test_crc_decode():
+
+    assert common.crc("8D406B902015A678D4D220AA4BDA") == 0
+    assert common.crc("8d8960ed58bf053cf11bc5932b7d") == 0
+    assert common.crc("8d45cab390c39509496ca9a32912") == 0
+    assert common.crc("8d74802958c904e6ef4ba0184d5c") == 0
+    assert common.crc("8d4400cd9b0000b4f87000e71a10") == 0
+    assert common.crc("8d4065de58a1054a7ef0218e226a") == 0
+
+    assert common.crc("c80b2dca34aa21dd821a04cb64d4") == 10719924
+    assert common.crc("a800089d8094e33a6004e4b8a522") == 4805588
+    assert common.crc("a8000614a50b6d32bed000bbe0ed") == 5659991
+    assert common.crc("a0000410bc900010a40000f5f477") == 11727682
+    assert common.crc("8d4ca251204994b1c36e60a5343d") == 16
+    assert common.crc("b0001718c65632b0a82040715b65") == 353333
+
+
+def test_crc_encode():
+    parity = common.crc("8D406B902015A678D4D220AA4BDA", encode=True)
+    assert parity == 11160538
+
+
+def test_icao():
+    assert common.icao("8D406B902015A678D4D220AA4BDA") == "406B90"
+    assert common.icao("A0001839CA3800315800007448D9") == "400940"
+    assert common.icao("A000139381951536E024D4CCF6B5") == "3C4DD2"
+    assert common.icao("A000029CFFBAA11E2004727281F1") == "4243D0"
+
+
+def test_modes_altcode():
+    assert common.altcode("A02014B400000000000000F9D514") == 32300
+
+
+def test_modes_idcode():
+    assert common.idcode("A800292DFFBBA9383FFCEB903D01") == "1346"
+
+
+def test_graycode_to_altitude():
+    assert common.gray2alt("00000000010") == -1000
+    assert common.gray2alt("00000001010") == -500
+    assert common.gray2alt("00000011011") == -100
+    assert common.gray2alt("00000011010") == 0
+    assert common.gray2alt("00000011110") == 100
+    assert common.gray2alt("00000010011") == 600
+    assert common.gray2alt("00000110010") == 1000
+    assert common.gray2alt("00001001001") == 5800
+    assert common.gray2alt("00011100100") == 10300
+    assert common.gray2alt("01100011010") == 32000
+    assert common.gray2alt("01110000100") == 46300
+    assert common.gray2alt("01010101100") == 50200
+    assert common.gray2alt("11011110100") == 73200
+    assert common.gray2alt("10000000011") == 126600
+    assert common.gray2alt("10000000001") == 126700

tests/test_commb.py

@@ -1,34 +1,36 @@
 from pyModeS import bds, commb
+
 # from pyModeS import ehs, els    # deprecated
 
-def test_bds20_callsign():
-    assert bds.bds20.cs20("A000083E202CC371C31DE0AA1CCF") == 'KLM1017_'
-    assert bds.bds20.cs20("A0001993202422F2E37CE038738E") == 'IBK2873_'
 
-    assert commb.cs20("A000083E202CC371C31DE0AA1CCF") == 'KLM1017_'
-    assert commb.cs20("A0001993202422F2E37CE038738E") == 'IBK2873_'
+def test_bds20_callsign():
+    assert bds.bds20.cs20("A000083E202CC371C31DE0AA1CCF") == "KLM1017_"
+    assert bds.bds20.cs20("A0001993202422F2E37CE038738E") == "IBK2873_"
+
+    assert commb.cs20("A000083E202CC371C31DE0AA1CCF") == "KLM1017_"
+    assert commb.cs20("A0001993202422F2E37CE038738E") == "IBK2873_"
 
 
 def test_bds40_functions():
-    assert bds.bds40.alt40mcp("A000029C85E42F313000007047D3") == 3008
-    assert bds.bds40.alt40fms("A000029C85E42F313000007047D3") == 3008
+    assert bds.bds40.selalt40mcp("A000029C85E42F313000007047D3") == 3008
+    assert bds.bds40.selalt40fms("A000029C85E42F313000007047D3") == 3008
     assert bds.bds40.p40baro("A000029C85E42F313000007047D3") == 1020.0
 
-    assert commb.alt40mcp("A000029C85E42F313000007047D3") == 3008
-    assert commb.alt40fms("A000029C85E42F313000007047D3") == 3008
+    assert commb.selalt40mcp("A000029C85E42F313000007047D3") == 3008
+    assert commb.selalt40fms("A000029C85E42F313000007047D3") == 3008
     assert commb.p40baro("A000029C85E42F313000007047D3") == 1020.0
 
 
 def test_bds50_functions():
     assert bds.bds50.roll50("A000139381951536E024D4CCF6B5") == 2.1
-    assert bds.bds50.roll50("A0001691FFD263377FFCE02B2BF9") == -0.4     # signed value
+    assert bds.bds50.roll50("A0001691FFD263377FFCE02B2BF9") == -0.4  # signed value
     assert bds.bds50.trk50("A000139381951536E024D4CCF6B5") == 114.258
     assert bds.bds50.gs50("A000139381951536E024D4CCF6B5") == 438
     assert bds.bds50.rtrk50("A000139381951536E024D4CCF6B5") == 0.125
     assert bds.bds50.tas50("A000139381951536E024D4CCF6B5") == 424
 
     assert commb.roll50("A000139381951536E024D4CCF6B5") == 2.1
-    assert commb.roll50("A0001691FFD263377FFCE02B2BF9") == -0.4     # signed value
+    assert commb.roll50("A0001691FFD263377FFCE02B2BF9") == -0.4  # signed value
     assert commb.trk50("A000139381951536E024D4CCF6B5") == 114.258
     assert commb.gs50("A000139381951536E024D4CCF6B5") == 438
     assert commb.rtrk50("A000139381951536E024D4CCF6B5") == 0.125

tests/test_common.py

@@ -1,42 +1,62 @@
-from pyModeS import common
+from pyModeS.decoder import common
 
 
-def test_hex2bin():
-    assert common.hex2bin('6E406B') == "011011100100000001101011"
+def test_conversions():
+    assert common.hex2bin("6E406B") == "011011100100000001101011"
+
 
 def test_crc_decode():
-    checksum = common.crc("8D406B902015A678D4D220AA4BDA")
-    assert checksum == "000000000000000000000000"
+    assert common.crc_legacy("8D406B902015A678D4D220AA4BDA") == 0
+
+    assert common.crc("8D406B902015A678D4D220AA4BDA") == 0
+    assert common.crc("8d8960ed58bf053cf11bc5932b7d") == 0
+    assert common.crc("8d45cab390c39509496ca9a32912") == 0
+    assert common.crc("8d49d3d4e1089d00000000744c3b") == 0
+    assert common.crc("8d74802958c904e6ef4ba0184d5c") == 0
+    assert common.crc("8d4400cd9b0000b4f87000e71a10") == 0
+    assert common.crc("8d4065de58a1054a7ef0218e226a") == 0
+
+    assert common.crc("c80b2dca34aa21dd821a04cb64d4") == 10719924
+    assert common.crc("a800089d8094e33a6004e4b8a522") == 4805588
+    assert common.crc("a8000614a50b6d32bed000bbe0ed") == 5659991
+    assert common.crc("a0000410bc900010a40000f5f477") == 11727682
+    assert common.crc("8d4ca251204994b1c36e60a5343d") == 16
+    assert common.crc("b0001718c65632b0a82040715b65") == 353333
+
 
 def test_crc_encode():
     parity = common.crc("8D406B902015A678D4D220AA4BDA", encode=True)
-    assert common.hex2bin("AA4BDA") == parity
+    assert parity == 11160538
+
 
 def test_icao():
     assert common.icao("8D406B902015A678D4D220AA4BDA") == "406B90"
-    assert common.icao("A0001839CA3800315800007448D9") == '400940'
-    assert common.icao("A000139381951536E024D4CCF6B5") == '3C4DD2'
-    assert common.icao("A000029CFFBAA11E2004727281F1") == '4243D0'
+    assert common.icao("A0001839CA3800315800007448D9") == "400940"
+    assert common.icao("A000139381951536E024D4CCF6B5") == "3C4DD2"
+    assert common.icao("A000029CFFBAA11E2004727281F1") == "4243D0"
+
 
 def test_modes_altcode():
     assert common.altcode("A02014B400000000000000F9D514") == 32300
 
+
 def test_modes_idcode():
-    assert common.idcode("A800292DFFBBA9383FFCEB903D01") == '1346'
+    assert common.idcode("A800292DFFBBA9383FFCEB903D01") == "1346"
+
 
 def test_graycode_to_altitude():
-    assert common.gray2alt('00000000010') == -1000
-    assert common.gray2alt('00000001010') == -500
-    assert common.gray2alt('00000011011') == -100
-    assert common.gray2alt('00000011010') == 0
-    assert common.gray2alt('00000011110') == 100
-    assert common.gray2alt('00000010011') == 600
-    assert common.gray2alt('00000110010') == 1000
-    assert common.gray2alt('00001001001') == 5800
-    assert common.gray2alt('00011100100') == 10300
-    assert common.gray2alt('01100011010') == 32000
-    assert common.gray2alt('01110000100') == 46300
-    assert common.gray2alt('01010101100') == 50200
-    assert common.gray2alt('11011110100') == 73200
-    assert common.gray2alt('10000000011') == 126600
-    assert common.gray2alt('10000000001') == 126700
+    assert common.gray2alt("00000000010") == -1000
+    assert common.gray2alt("00000001010") == -500
+    assert common.gray2alt("00000011011") == -100
+    assert common.gray2alt("00000011010") == 0
+    assert common.gray2alt("00000011110") == 100
+    assert common.gray2alt("00000010011") == 600
+    assert common.gray2alt("00000110010") == 1000
+    assert common.gray2alt("00001001001") == 5800
+    assert common.gray2alt("00011100100") == 10300
+    assert common.gray2alt("01100011010") == 32000
+    assert common.gray2alt("01110000100") == 46300
+    assert common.gray2alt("01010101100") == 50200
+    assert common.gray2alt("11011110100") == 73200
+    assert common.gray2alt("10000000011") == 126600
+    assert common.gray2alt("10000000001") == 126700

tests/test_tell.py

@@ -0,0 +1,20 @@
+from pyModeS.decoder import tell
+
+messages = [
+    "8D406B902015A678D4D220AA4BDA",
+    "8FC8200A3AB8F5F893096B000000",
+    "8D40058B58C901375147EFD09357",
+    "8D485020994409940838175B284F",
+    "A000083E202CC371C31DE0AA1CCF",
+    "A8001E2520053332C1A820363386",
+    "A000029C85E42F313000007047D3",
+    "A5DC282C2A0108372CA6DA9693B0",
+    "A00015B8C26A00328400004242DA",
+    "A000139381951536E024D4CCF6B5",
+    "A00004128F39F91A7E27C46ADC21",
+]
+
+print("-" * 70)
+for m in messages:
+    tell(m)
+    print("-" * 70)

tox.ini

@@ -1,9 +0,0 @@
-[tox]
-toxworkdir = /tmp/tox
-envlist = py2,py3
-
-[testenv]
-deps =
-  pytest
-  numpy
-commands = py.test