1 files changed, 168 insertions, 0 deletions
diff --git a/gr-qtgui/apps/plot_spectrogram_base.py b/gr-qtgui/apps/plot_spectrogram_base.py
new file mode 100644
index 0000000000..adfbfd032f
--- /dev/null
+++ b/gr-qtgui/apps/plot_spectrogram_base.py
@@ -0,0 +1,168 @@
+#!/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 = gr.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.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._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)
+