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| author | Tom Rondeau <trondeau@vt.edu> | 2010-03-14 17:32:23 -0400 |
|---|---|---|
| committer | Tom Rondeau <trondeau@vt.edu> | 2010-03-14 17:32:23 -0400 |
| commit | b53bc1395bd2e8b1ad8a34c583d36fb4ddda7629 (patch) | |
| tree | 5f1dd8dff1cabaf055c23097f335e2295c5840df /gnuradio-core/src/python/gnuradio/modulation_utils2.py | |
| parent | 8c163c9cca7aa39862c8c8eb19a3e0a18c61a661 (diff) | |
Making old and new digital modulations completely seperable by adding modulation_utils2 so only new modulator blocks work with the version 2 of everything. Also changed some internal names for clarity.
Diffstat (limited to 'gnuradio-core/src/python/gnuradio/modulation_utils2.py')
| -rw-r--r-- | gnuradio-core/src/python/gnuradio/modulation_utils2.py | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/gnuradio-core/src/python/gnuradio/modulation_utils2.py b/gnuradio-core/src/python/gnuradio/modulation_utils2.py new file mode 100644 index 0000000000..71ba773895 --- /dev/null +++ b/gnuradio-core/src/python/gnuradio/modulation_utils2.py @@ -0,0 +1,81 @@ +# +# Copyright 2006 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio 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, or (at your option) +# any later version. +# +# GNU Radio 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, write to the Free Software Foundation, Inc., +# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +# + +""" +Miscellaneous utilities for managing mods and demods, as well as other items +useful in dealing with generalized handling of different modulations and demods. +""" + +import inspect + + +# Type 1 modulators accept a stream of bytes on their input and produce complex baseband output +_type_1_modulators = {} + +def type_1_mods(): + return _type_1_modulators + +def add_type_1_mod(name, mod_class): + _type_1_modulators[name] = mod_class + + +# Type 1 demodulators accept complex baseband input and produce a stream of bits, packed +# 1 bit / byte as their output. Their output is completely unambiguous. There is no need +# to resolve phase or polarity ambiguities. +_type_1_demodulators = {} + +def type_1_demods(): + return _type_1_demodulators + +def add_type_1_demod(name, demod_class): + _type_1_demodulators[name] = demod_class + + +def extract_kwargs_from_options(function, excluded_args, options): + """ + Given a function, a list of excluded arguments and the result of + parsing command line options, create a dictionary of key word + arguments suitable for passing to the function. The dictionary + will be populated with key/value pairs where the keys are those + that are common to the function's argument list (minus the + excluded_args) and the attributes in options. The values are the + corresponding values from options unless that value is None. + In that case, the corresponding dictionary entry is not populated. + + (This allows different modulations that have the same parameter + names, but different default values to coexist. The downside is + that --help in the option parser will list the default as None, + but in that case the default provided in the __init__ argument + list will be used since there is no kwargs entry.) + + @param function: the function whose parameter list will be examined + @param excluded_args: function arguments that are NOT to be added to the dictionary + @type excluded_args: sequence of strings + @param options: result of command argument parsing + @type options: optparse.Values + """ + # Try this in C++ ;) + args, varargs, varkw, defaults = inspect.getargspec(function) + d = {} + for kw in [a for a in args if a not in excluded_args]: + if hasattr(options, kw): + if getattr(options, kw) is not None: + d[kw] = getattr(options, kw) + return d |