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#!/usr/bin/env python
#
# Copyright 2013 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 GNU Radio; see the file COPYING. If not, write to
# the Free Software Foundation, Inc., 51 Franklin Street,
# Boston, MA 02110-1301, USA.
#
from gnuradio import gr, blocks
from gnuradio.eng_option import eng_option
from optparse import OptionParser
import os, sys
try:
from gnuradio import qtgui
from PyQt4 import QtGui, QtCore
import sip
except ImportError:
print "Error: Program requires PyQt4 and gr-qtgui."
sys.exit(1)
try:
import scipy
except ImportError:
print "Error: Scipy required (www.scipy.org)."
sys.exit(1)
try:
from gnuradio.qtgui.plot_form import *
from gnuradio.qtgui.plot_base import *
except ImportError:
from plot_form import *
from plot_base import *
class plot_base(gr.top_block):
def __init__(self, filelist, fc, samp_rate, psdsize, start,
nsamples, max_nsamples, avg=1.0):
gr.top_block.__init__(self)
self._filelist = filelist
self._center_freq = fc
self._samp_rate = samp_rate
self._psd_size = psdsize
self._start = start
self._max_nsamps = max_nsamples
self._nsigs = len(self._filelist)
self._avg = avg
self._nsamps = nsamples
self._auto_scale = False
self._y_min = -200
self._y_max = 400
self._y_range = 130
self._y_value = 10
self._is_setup = False
self.qapp = QtGui.QApplication(sys.argv)
def setup(self):
self.skip = blocks.skiphead(self.dsize, self._start)
n = 0
self.srcs = list()
self._data_min = sys.maxint
self._data_max = -sys.maxint - 1
for f in self._filelist:
data,_min,_max = self.read_samples(f, self._start,
self._nsamps, self._psd_size)
if(_min < self._data_min):
self._data_min = _min
if(_max > self._data_max):
self._data_max = _max
self.srcs.append(self.src_type(data))
# Set default labels based on file names
fname = f.split("/")[-1]
self.gui_snk.set_line_label(n, "{0}".format(fname))
n += 1
self.connect(self.srcs[0], self.skip)
self.connect(self.skip, (self.gui_snk, 0))
for i,s in enumerate(self.srcs[1:]):
self.connect(s, (self.gui_snk, i+1))
self.gui_snk.set_update_time(0);
self.gui_snk.set_time_per_fft(self._psd_size/self._samp_rate)
self.gui_snk.enable_menu(False)
self.gui_snk.set_fft_average(self._avg)
# Get Python Qt references
pyQt = self.gui_snk.pyqwidget()
self.pyWin = sip.wrapinstance(pyQt, QtGui.QWidget)
self._is_setup = True
def is_setup(self):
return self._is_setup
def set_y_axis(self, y_min, y_max):
self.gui_snk.set_intensity_range(y_min, y_max)
return y_min, y_max
def get_gui(self):
if(self.is_setup()):
return self.pyWin
else:
return None
def reset(self, newstart, newnsamps):
self.stop()
self.wait()
self.gui_snk.clear_data()
self.gui_snk.set_time_per_fft(self._psd_size/self._samp_rate)
self._start = newstart
self._nsamps = newnsamps
self._data_min = sys.maxint
self._data_max = -sys.maxint - 1
for s,f in zip(self.srcs, self._filelist):
data,_min,_max = self.read_samples(f, self._start, newnsamps, self._psd_size)
if(_min < self._data_min):
self._data_min = _min
if(_max > self._data_max):
self._data_max = _max
s.set_data(data)
self.start()
def setup_options(desc):
parser = OptionParser(option_class=eng_option, description=desc,
conflict_handler="resolve")
parser.add_option("-N", "--nsamples", type="int", default=1000000,
help="Set the number of samples to display [default=%default]")
parser.add_option("-S", "--start", type="int", default=0,
help="Starting sample number [default=%default]")
parser.add_option("-L", "--psd-size", type="int", default=2048,
help="Set the FFT size of the PSD [default=%default]")
parser.add_option("-f", "--center-frequency", type="eng_float", default=0.0,
help="Set the center frequency of the signal [default=%default]")
parser.add_option("-r", "--sample-rate", type="eng_float", default=1.0,
help="Set the sample rate of the signal [default=%default]")
parser.add_option("-a", "--average", type="float", default=1.0,
help="Set amount of averaging (smaller=more averaging) [default=%default]")
(options, args) = parser.parse_args()
if(len(args) < 1):
parser.print_help()
sys.exit(0)
return (options, args)
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