gr_spectrogram_plot_c

#!/usr/bin/env python
#
# Copyright 2012,2013 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
from gnuradio import blocks
from gnuradio import filter
import scipy

try:
    import gnuradio.qtgui.plot_spectrogram_base as plot_base
except ImportError:
    import plot_spectrogram_base as plot_base

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)

class spectrogram_plot_c(plot_base.plot_base):
    def __init__(self, filelist, fc, samp_rate, psdsize, start,
                 nsamples, max_nsamples, avg=1.0):
        plot_base.plot_base.__init__(self, filelist, fc, samp_rate,
                                     psdsize, start, nsamples,
                                     max_nsamples, avg)

        self.read_samples = plot_base.read_samples_c
        self.dsize = gr.sizeof_gr_complex
        self.src_type = blocks.vector_source_c
        self.gui_snk = qtgui.waterfall_sink_c(self._psd_size, filter.firdes.WIN_BLACKMAN_hARRIS,
                                              self._center_freq, self._samp_rate,
                                              "GNU Radio Spectrogram Plot", self._nsigs)
        self.setup()

def main():
    description = "Plots the spectrogram (waterfall) of a list of files. Files are a binary list of complex floats."
    (options, args) = plot_base.setup_options(description)

    filelist = list(args)
    max_nsamples = plot_base.find_max_nsamples(filelist)

    tb = spectrogram_plot_c(filelist,
                            options.center_frequency, options.sample_rate,
                            options.psd_size,
                            options.start, options.nsamples, max_nsamples,
                            options.average);

    main_box = plot_base.plot_spectrogram_form(tb, 'GNU Radio Spectrogram Plot')
    main_box.show()

    tb.run()
    tb.qapp.exec_()

if __name__ == "__main__":
    try:
        main()
    except KeyboardInterrupt:
        pass