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Diffstat (limited to 'gr-wxgui/src/python/fftsink.py')
| -rwxr-xr-x | gr-wxgui/src/python/fftsink.py | 488 |
1 files changed, 0 insertions, 488 deletions
diff --git a/gr-wxgui/src/python/fftsink.py b/gr-wxgui/src/python/fftsink.py deleted file mode 100755 index 85e3a1f9e..000000000 --- a/gr-wxgui/src/python/fftsink.py +++ /dev/null @@ -1,488 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 2003,2004,2005,2006,2007 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, gru, window -from gnuradio.wxgui import stdgui -import wx -import gnuradio.wxgui.plot as plot -import numpy -import threading -import math - -default_fftsink_size = (640,240) -default_fft_rate = gr.prefs().get_long('wxgui', 'fft_rate', 15) - -class fft_sink_base(object): - def __init__(self, input_is_real=False, baseband_freq=0, y_per_div=10, ref_level=50, - sample_rate=1, fft_size=512, - fft_rate=default_fft_rate, - average=False, avg_alpha=None, title='', peak_hold=False): - - # initialize common attributes - self.baseband_freq = baseband_freq - self.y_divs = 8 - self.y_per_div=y_per_div - self.ref_level = ref_level - self.sample_rate = sample_rate - self.fft_size = fft_size - self.fft_rate = fft_rate - self.average = average - if avg_alpha is None: - self.avg_alpha = 2.0 / fft_rate - else: - self.avg_alpha = avg_alpha - self.title = title - self.peak_hold = peak_hold - self.input_is_real = input_is_real - self.msgq = gr.msg_queue(2) # queue that holds a maximum of 2 messages - - def set_y_per_div(self, y_per_div): - self.y_per_div = y_per_div - - def set_ref_level(self, ref_level): - self.ref_level = ref_level - - def set_average(self, average): - self.average = average - if average: - self.avg.set_taps(self.avg_alpha) - self.set_peak_hold(False) - else: - self.avg.set_taps(1.0) - - def set_peak_hold(self, enable): - self.peak_hold = enable - if enable: - self.set_average(False) - self.win.set_peak_hold(enable) - - def set_avg_alpha(self, avg_alpha): - self.avg_alpha = avg_alpha - - def set_baseband_freq(self, baseband_freq): - self.baseband_freq = baseband_freq - - def set_sample_rate(self, sample_rate): - self.sample_rate = sample_rate - self._set_n() - - def _set_n(self): - self.one_in_n.set_n(max(1, int(self.sample_rate/self.fft_size/self.fft_rate))) - - -class fft_sink_f(gr.hier_block, fft_sink_base): - def __init__(self, fg, parent, baseband_freq=0, - y_per_div=10, ref_level=50, sample_rate=1, fft_size=512, - fft_rate=default_fft_rate, average=False, avg_alpha=None, - title='', size=default_fftsink_size, peak_hold=False): - - fft_sink_base.__init__(self, input_is_real=True, baseband_freq=baseband_freq, - y_per_div=y_per_div, ref_level=ref_level, - sample_rate=sample_rate, fft_size=fft_size, - fft_rate=fft_rate, - average=average, avg_alpha=avg_alpha, title=title, - peak_hold=peak_hold) - - s2p = gr.stream_to_vector(gr.sizeof_float, self.fft_size) - self.one_in_n = gr.keep_one_in_n(gr.sizeof_float * self.fft_size, - max(1, int(self.sample_rate/self.fft_size/self.fft_rate))) - - mywindow = window.blackmanharris(self.fft_size) - fft = gr.fft_vfc(self.fft_size, True, mywindow) - power = 0 - for tap in mywindow: - power += tap*tap - - c2mag = gr.complex_to_mag(self.fft_size) - self.avg = gr.single_pole_iir_filter_ff(1.0, self.fft_size) - - # FIXME We need to add 3dB to all bins but the DC bin - log = gr.nlog10_ff(20, self.fft_size, - -20*math.log10(self.fft_size)-10*math.log10(power/self.fft_size)) - sink = gr.message_sink(gr.sizeof_float * self.fft_size, self.msgq, True) - - fg.connect (s2p, self.one_in_n, fft, c2mag, self.avg, log, sink) - gr.hier_block.__init__(self, fg, s2p, sink) - - self.win = fft_window(self, parent, size=size) - self.set_average(self.average) - - -class fft_sink_c(gr.hier_block, fft_sink_base): - def __init__(self, fg, parent, baseband_freq=0, - y_per_div=10, ref_level=50, sample_rate=1, fft_size=512, - fft_rate=default_fft_rate, average=False, avg_alpha=None, - title='', size=default_fftsink_size, peak_hold=False): - - fft_sink_base.__init__(self, input_is_real=False, baseband_freq=baseband_freq, - y_per_div=y_per_div, ref_level=ref_level, - sample_rate=sample_rate, fft_size=fft_size, - fft_rate=fft_rate, - average=average, avg_alpha=avg_alpha, title=title, - peak_hold=peak_hold) - - s2p = gr.stream_to_vector(gr.sizeof_gr_complex, self.fft_size) - self.one_in_n = gr.keep_one_in_n(gr.sizeof_gr_complex * self.fft_size, - max(1, int(self.sample_rate/self.fft_size/self.fft_rate))) - mywindow = window.blackmanharris(self.fft_size) - power = 0 - for tap in mywindow: - power += tap*tap - - fft = gr.fft_vcc(self.fft_size, True, mywindow) - c2mag = gr.complex_to_mag(fft_size) - self.avg = gr.single_pole_iir_filter_ff(1.0, fft_size) - log = gr.nlog10_ff(20, self.fft_size, - -20*math.log10(self.fft_size)-10*math.log10(power/self.fft_size)) - sink = gr.message_sink(gr.sizeof_float * fft_size, self.msgq, True) - - fg.connect(s2p, self.one_in_n, fft, c2mag, self.avg, log, sink) - gr.hier_block.__init__(self, fg, s2p, sink) - - self.win = fft_window(self, parent, size=size) - self.set_average(self.average) - - -# ------------------------------------------------------------------------ - -myDATA_EVENT = wx.NewEventType() -EVT_DATA_EVENT = wx.PyEventBinder (myDATA_EVENT, 0) - - -class DataEvent(wx.PyEvent): - def __init__(self, data): - wx.PyEvent.__init__(self) - self.SetEventType (myDATA_EVENT) - self.data = data - - def Clone (self): - self.__class__ (self.GetId()) - - -class input_watcher (threading.Thread): - def __init__ (self, msgq, fft_size, event_receiver, **kwds): - threading.Thread.__init__ (self, **kwds) - self.setDaemon (1) - self.msgq = msgq - self.fft_size = fft_size - self.event_receiver = event_receiver - self.keep_running = True - self.start () - - def run (self): - while (self.keep_running): - msg = self.msgq.delete_head() # blocking read of message queue - itemsize = int(msg.arg1()) - nitems = int(msg.arg2()) - - s = msg.to_string() # get the body of the msg as a string - - # There may be more than one FFT frame in the message. - # If so, we take only the last one - if nitems > 1: - start = itemsize * (nitems - 1) - s = s[start:start+itemsize] - - complex_data = numpy.fromstring (s, numpy.float32) - de = DataEvent (complex_data) - wx.PostEvent (self.event_receiver, de) - del de - - -class fft_window (plot.PlotCanvas): - def __init__ (self, fftsink, parent, id = -1, - pos = wx.DefaultPosition, size = wx.DefaultSize, - style = wx.DEFAULT_FRAME_STYLE, name = ""): - plot.PlotCanvas.__init__ (self, parent, id, pos, size, style, name) - - self.y_range = None - self.fftsink = fftsink - self.peak_hold = False - self.peak_vals = None - - self.SetEnableGrid (True) - # self.SetEnableZoom (True) - # self.SetBackgroundColour ('black') - - self.build_popup_menu() - - EVT_DATA_EVENT (self, self.set_data) - wx.EVT_CLOSE (self, self.on_close_window) - self.Bind(wx.EVT_RIGHT_UP, self.on_right_click) - - self.input_watcher = input_watcher(fftsink.msgq, fftsink.fft_size, self) - - - def on_close_window (self, event): - print "fft_window:on_close_window" - self.keep_running = False - - - def set_data (self, evt): - dB = evt.data - L = len (dB) - - if self.peak_hold: - if self.peak_vals is None: - self.peak_vals = dB - else: - self.peak_vals = numpy.maximum(dB, self.peak_vals) - dB = self.peak_vals - - x = max(abs(self.fftsink.sample_rate), abs(self.fftsink.baseband_freq)) - if x >= 1e9: - sf = 1e-9 - units = "GHz" - elif x >= 1e6: - sf = 1e-6 - units = "MHz" - else: - sf = 1e-3 - units = "kHz" - - if self.fftsink.input_is_real: # only plot 1/2 the points - x_vals = ((numpy.arange (L/2) - * (self.fftsink.sample_rate * sf / L)) - + self.fftsink.baseband_freq * sf) - points = numpy.zeros((len(x_vals), 2), numpy.float64) - points[:,0] = x_vals - points[:,1] = dB[0:L/2] - else: - # the "negative freqs" are in the second half of the array - x_vals = ((numpy.arange (-L/2, L/2) - * (self.fftsink.sample_rate * sf / L)) - + self.fftsink.baseband_freq * sf) - points = numpy.zeros((len(x_vals), 2), numpy.float64) - points[:,0] = x_vals - points[:,1] = numpy.concatenate ((dB[L/2:], dB[0:L/2])) - - - lines = plot.PolyLine (points, colour='BLUE') - - graphics = plot.PlotGraphics ([lines], - title=self.fftsink.title, - xLabel = units, yLabel = "dB") - - self.Draw (graphics, xAxis=None, yAxis=self.y_range) - self.update_y_range () - - def set_peak_hold(self, enable): - self.peak_hold = enable - self.peak_vals = None - - def update_y_range (self): - ymax = self.fftsink.ref_level - ymin = self.fftsink.ref_level - self.fftsink.y_per_div * self.fftsink.y_divs - self.y_range = self._axisInterval ('min', ymin, ymax) - - def on_average(self, evt): - # print "on_average" - self.fftsink.set_average(evt.IsChecked()) - - def on_peak_hold(self, evt): - # print "on_peak_hold" - self.fftsink.set_peak_hold(evt.IsChecked()) - - def on_incr_ref_level(self, evt): - # print "on_incr_ref_level" - self.fftsink.set_ref_level(self.fftsink.ref_level - + self.fftsink.y_per_div) - - def on_decr_ref_level(self, evt): - # print "on_decr_ref_level" - self.fftsink.set_ref_level(self.fftsink.ref_level - - self.fftsink.y_per_div) - - def on_incr_y_per_div(self, evt): - # print "on_incr_y_per_div" - self.fftsink.set_y_per_div(next_up(self.fftsink.y_per_div, (1,2,5,10,20))) - - def on_decr_y_per_div(self, evt): - # print "on_decr_y_per_div" - self.fftsink.set_y_per_div(next_down(self.fftsink.y_per_div, (1,2,5,10,20))) - - def on_y_per_div(self, evt): - # print "on_y_per_div" - Id = evt.GetId() - if Id == self.id_y_per_div_1: - self.fftsink.set_y_per_div(1) - elif Id == self.id_y_per_div_2: - self.fftsink.set_y_per_div(2) - elif Id == self.id_y_per_div_5: - self.fftsink.set_y_per_div(5) - elif Id == self.id_y_per_div_10: - self.fftsink.set_y_per_div(10) - elif Id == self.id_y_per_div_20: - self.fftsink.set_y_per_div(20) - - - def on_right_click(self, event): - menu = self.popup_menu - for id, pred in self.checkmarks.items(): - item = menu.FindItemById(id) - item.Check(pred()) - self.PopupMenu(menu, event.GetPosition()) - - - def build_popup_menu(self): - self.id_incr_ref_level = wx.NewId() - self.id_decr_ref_level = wx.NewId() - self.id_incr_y_per_div = wx.NewId() - self.id_decr_y_per_div = wx.NewId() - self.id_y_per_div_1 = wx.NewId() - self.id_y_per_div_2 = wx.NewId() - self.id_y_per_div_5 = wx.NewId() - self.id_y_per_div_10 = wx.NewId() - self.id_y_per_div_20 = wx.NewId() - self.id_average = wx.NewId() - self.id_peak_hold = wx.NewId() - - self.Bind(wx.EVT_MENU, self.on_average, id=self.id_average) - self.Bind(wx.EVT_MENU, self.on_peak_hold, id=self.id_peak_hold) - self.Bind(wx.EVT_MENU, self.on_incr_ref_level, id=self.id_incr_ref_level) - self.Bind(wx.EVT_MENU, self.on_decr_ref_level, id=self.id_decr_ref_level) - self.Bind(wx.EVT_MENU, self.on_incr_y_per_div, id=self.id_incr_y_per_div) - self.Bind(wx.EVT_MENU, self.on_decr_y_per_div, id=self.id_decr_y_per_div) - self.Bind(wx.EVT_MENU, self.on_y_per_div, id=self.id_y_per_div_1) - self.Bind(wx.EVT_MENU, self.on_y_per_div, id=self.id_y_per_div_2) - self.Bind(wx.EVT_MENU, self.on_y_per_div, id=self.id_y_per_div_5) - self.Bind(wx.EVT_MENU, self.on_y_per_div, id=self.id_y_per_div_10) - self.Bind(wx.EVT_MENU, self.on_y_per_div, id=self.id_y_per_div_20) - - - # make a menu - menu = wx.Menu() - self.popup_menu = menu - menu.AppendCheckItem(self.id_average, "Average") - menu.AppendCheckItem(self.id_peak_hold, "Peak Hold") - menu.Append(self.id_incr_ref_level, "Incr Ref Level") - menu.Append(self.id_decr_ref_level, "Decr Ref Level") - # menu.Append(self.id_incr_y_per_div, "Incr dB/div") - # menu.Append(self.id_decr_y_per_div, "Decr dB/div") - menu.AppendSeparator() - # we'd use RadioItems for these, but they're not supported on Mac - menu.AppendCheckItem(self.id_y_per_div_1, "1 dB/div") - menu.AppendCheckItem(self.id_y_per_div_2, "2 dB/div") - menu.AppendCheckItem(self.id_y_per_div_5, "5 dB/div") - menu.AppendCheckItem(self.id_y_per_div_10, "10 dB/div") - menu.AppendCheckItem(self.id_y_per_div_20, "20 dB/div") - - self.checkmarks = { - self.id_average : lambda : self.fftsink.average, - self.id_peak_hold : lambda : self.fftsink.peak_hold, - self.id_y_per_div_1 : lambda : self.fftsink.y_per_div == 1, - self.id_y_per_div_2 : lambda : self.fftsink.y_per_div == 2, - self.id_y_per_div_5 : lambda : self.fftsink.y_per_div == 5, - self.id_y_per_div_10 : lambda : self.fftsink.y_per_div == 10, - self.id_y_per_div_20 : lambda : self.fftsink.y_per_div == 20, - } - - -def next_up(v, seq): - """ - Return the first item in seq that is > v. - """ - for s in seq: - if s > v: - return s - return v - -def next_down(v, seq): - """ - Return the last item in seq that is < v. - """ - rseq = list(seq[:]) - rseq.reverse() - - for s in rseq: - if s < v: - return s - return v - - -# ---------------------------------------------------------------- -# Deprecated interfaces -# ---------------------------------------------------------------- - -# returns (block, win). -# block requires a single input stream of float -# win is a subclass of wxWindow - -def make_fft_sink_f(fg, parent, title, fft_size, input_rate, ymin = 0, ymax=50): - - block = fft_sink_f(fg, parent, title=title, fft_size=fft_size, sample_rate=input_rate, - y_per_div=(ymax - ymin)/8, ref_level=ymax) - return (block, block.win) - -# returns (block, win). -# block requires a single input stream of gr_complex -# win is a subclass of wxWindow - -def make_fft_sink_c(fg, parent, title, fft_size, input_rate, ymin=0, ymax=50): - block = fft_sink_c(fg, parent, title=title, fft_size=fft_size, sample_rate=input_rate, - y_per_div=(ymax - ymin)/8, ref_level=ymax) - return (block, block.win) - - -# ---------------------------------------------------------------- -# Standalone test app -# ---------------------------------------------------------------- - -class test_app_flow_graph (stdgui.gui_flow_graph): - def __init__(self, frame, panel, vbox, argv): - stdgui.gui_flow_graph.__init__ (self, frame, panel, vbox, argv) - - fft_size = 256 - - # build our flow graph - input_rate = 20.48e3 - - # Generate a complex sinusoid - #src1 = gr.sig_source_c (input_rate, gr.GR_SIN_WAVE, 2e3, 1) - src1 = gr.sig_source_c (input_rate, gr.GR_CONST_WAVE, 5.75e3, 1) - - # We add these throttle blocks so that this demo doesn't - # suck down all the CPU available. Normally you wouldn't use these. - thr1 = gr.throttle(gr.sizeof_gr_complex, input_rate) - - sink1 = fft_sink_c (self, panel, title="Complex Data", fft_size=fft_size, - sample_rate=input_rate, baseband_freq=100e3, - ref_level=0, y_per_div=20) - vbox.Add (sink1.win, 1, wx.EXPAND) - self.connect (src1, thr1, sink1) - - #src2 = gr.sig_source_f (input_rate, gr.GR_SIN_WAVE, 2e3, 1) - src2 = gr.sig_source_f (input_rate, gr.GR_CONST_WAVE, 5.75e3, 1) - thr2 = gr.throttle(gr.sizeof_float, input_rate) - sink2 = fft_sink_f (self, panel, title="Real Data", fft_size=fft_size*2, - sample_rate=input_rate, baseband_freq=100e3, - ref_level=0, y_per_div=20) - vbox.Add (sink2.win, 1, wx.EXPAND) - self.connect (src2, thr2, sink2) - -def main (): - app = stdgui.stdapp (test_app_flow_graph, - "FFT Sink Test App") - app.MainLoop () - -if __name__ == '__main__': - main () |