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Diffstat (limited to 'gr-wxgui/src/python/waterfallsink.py')
| -rwxr-xr-x | gr-wxgui/src/python/waterfallsink.py | 469 |
1 files changed, 469 insertions, 0 deletions
diff --git a/gr-wxgui/src/python/waterfallsink.py b/gr-wxgui/src/python/waterfallsink.py new file mode 100755 index 000000000..f5a6d243f --- /dev/null +++ b/gr-wxgui/src/python/waterfallsink.py @@ -0,0 +1,469 @@ +#!/usr/bin/env python +# +# Copyright 2003,2004,2005 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 2, 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., 59 Temple Place - Suite 330, +# Boston, MA 02111-1307, USA. +# + +from gnuradio import gr, gru, window +from gnuradio.wxgui import stdgui +import wx +import gnuradio.wxgui.plot as plot +import Numeric +import os +import threading +import math + +default_fftsink_size = (640,240) +default_fft_rate = gr.prefs().get_long('wxgui', 'fft_rate', 15) + +class waterfall_sink_base(object): + def __init__(self, input_is_real=False, baseband_freq=0, + sample_rate=1, fft_size=512, + fft_rate=default_fft_rate, + average=False, avg_alpha=None, title=''): + + # initialize common attributes + self.baseband_freq = baseband_freq + 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.input_is_real = input_is_real + (self.r_fd, self.w_fd) = os.pipe() + + def set_average(self, average): + self.average = average + if average: + self.avg.set_taps(self.avg_alpha) + else: + self.avg.set_taps(1.0) + + 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 waterfall_sink_f(gr.hier_block, waterfall_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): + + waterfall_sink_base.__init__(self, input_is_real=True, baseband_freq=baseband_freq, + sample_rate=sample_rate, fft_size=fft_size, + fft_rate=fft_rate, + average=average, avg_alpha=avg_alpha, title=title) + + s2p = gr.serial_to_parallel(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) + c2mag = gr.complex_to_mag(self.fft_size) + self.avg = gr.single_pole_iir_filter_ff(1.0, self.fft_size) + log = gr.nlog10_ff(20, self.fft_size, -20*math.log10(self.fft_size)) + sink = gr.file_descriptor_sink(gr.sizeof_float * self.fft_size, self.w_fd) + + fg.connect (s2p, self.one_in_n, fft, c2mag, self.avg, log, sink) + gr.hier_block.__init__(self, fg, s2p, sink) + + self.win = waterfall_window(self, parent, size=size) + self.set_average(self.average) + + +class waterfall_sink_c(gr.hier_block, waterfall_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): + + waterfall_sink_base.__init__(self, input_is_real=False, baseband_freq=baseband_freq, + sample_rate=sample_rate, fft_size=fft_size, + fft_rate=fft_rate, + average=average, avg_alpha=avg_alpha, title=title) + + s2p = gr.serial_to_parallel(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) + fft = gr.fft_vcc(self.fft_size, True, mywindow) + c2mag = gr.complex_to_mag(self.fft_size) + self.avg = gr.single_pole_iir_filter_ff(1.0, self.fft_size) + log = gr.nlog10_ff(20, self.fft_size, -20*math.log10(self.fft_size)) + sink = gr.file_descriptor_sink(gr.sizeof_float * self.fft_size, self.w_fd) + + fg.connect(s2p, self.one_in_n, fft, c2mag, self.avg, log, sink) + gr.hier_block.__init__(self, fg, s2p, sink) + + self.win = waterfall_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, file_descriptor, fft_size, event_receiver, **kwds): + threading.Thread.__init__ (self, **kwds) + self.setDaemon (1) + self.file_descriptor = file_descriptor + self.fft_size = fft_size + self.event_receiver = event_receiver + self.keep_running = True + self.start () + + def run (self): + while (self.keep_running): + s = gru.os_read_exactly (self.file_descriptor, + gr.sizeof_float * self.fft_size) + if not s: + self.keep_running = False + break + + complex_data = Numeric.fromstring (s, Numeric.Float32) + de = DataEvent (complex_data) + wx.PostEvent (self.event_receiver, de) + del de + + +class waterfall_window (wx.Panel): + def __init__ (self, fftsink, parent, id = -1, + pos = wx.DefaultPosition, size = wx.DefaultSize, + style = wx.DEFAULT_FRAME_STYLE, name = ""): + wx.Panel.__init__(self, parent, id, pos, size, style, name) + + self.fftsink = fftsink + self.bm = wx.EmptyBitmap(self.fftsink.fft_size, 300, -1) + + self.scale_factor = 5.0 # FIXME should autoscale, or set this + + dc1 = wx.MemoryDC() + dc1.SelectObject(self.bm) + dc1.Clear() + + self.pens = self.make_pens() + + wx.EVT_PAINT( self, self.OnPaint ) + wx.EVT_CLOSE (self, self.on_close_window) + EVT_DATA_EVENT (self, self.set_data) + + self.build_popup_menu() + + wx.EVT_CLOSE (self, self.on_close_window) + self.Bind(wx.EVT_RIGHT_UP, self.on_right_click) + + self.input_watcher = input_watcher(fftsink.r_fd, fftsink.fft_size, self) + + + def on_close_window (self, event): + print "waterfall_window: on_close_window" + self.keep_running = False + + def const_list(self,const,len): + return [const] * len + + def make_colormap(self): + r = [] + r.extend(self.const_list(0,96)) + r.extend(range(0,255,4)) + r.extend(self.const_list(255,64)) + r.extend(range(255,128,-4)) + + g = [] + g.extend(self.const_list(0,32)) + g.extend(range(0,255,4)) + g.extend(self.const_list(255,64)) + g.extend(range(255,0,-4)) + g.extend(self.const_list(0,32)) + + b = range(128,255,4) + b.extend(self.const_list(255,64)) + b.extend(range(255,0,-4)) + b.extend(self.const_list(0,96)) + return (r,g,b) + + def make_pens(self): + (r,g,b) = self.make_colormap() + pens = [] + for i in range(0,256): + colour = wx.Colour(r[i], g[i], b[i]) + pens.append( wx.Pen(colour, 2, wx.SOLID)) + return pens + + def OnPaint(self, event): + dc = wx.PaintDC(self) + self.DoDrawing(dc) + + def DoDrawing(self, dc=None): + if dc is None: + dc = wx.ClientDC(self) + dc.DrawBitmap(self.bm, 0, 0, False ) + + + def const_list(self,const,len): + a = [const] + for i in range(1,len): + a.append(const) + return a + + def make_colormap(self): + r = [] + r.extend(self.const_list(0,96)) + r.extend(range(0,255,4)) + r.extend(self.const_list(255,64)) + r.extend(range(255,128,-4)) + + g = [] + g.extend(self.const_list(0,32)) + g.extend(range(0,255,4)) + g.extend(self.const_list(255,64)) + g.extend(range(255,0,-4)) + g.extend(self.const_list(0,32)) + + b = range(128,255,4) + b.extend(self.const_list(255,64)) + b.extend(range(255,0,-4)) + b.extend(self.const_list(0,96)) + return (r,g,b) + + def set_data (self, evt): + dB = evt.data + L = len (dB) + + dc1 = wx.MemoryDC() + dc1.SelectObject(self.bm) + dc1.Blit(0,1,self.fftsink.fft_size,300,dc1,0,0,wx.COPY,False,-1,-1) + + 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 + d_max = L/2 + p_width = 2 + else: + d_max = L/2 + p_width = 1 + + scale_factor = self.scale_factor + if self.fftsink.input_is_real: # real fft + for x_pos in range(0, d_max): + value = int(dB[x_pos] * scale_factor) + value = min(255, max(0, value)) + dc1.SetPen(self.pens[value]) + dc1.DrawRectangle(x_pos*p_width, 0, p_width, 1) + else: # complex fft + for x_pos in range(0, d_max): # positive freqs + value = int(dB[x_pos] * scale_factor) + value = min(255, max(0, value)) + dc1.SetPen(self.pens[value]) + dc1.DrawRectangle(x_pos*p_width + d_max, 0, p_width, 1) + for x_pos in range(0 , d_max): # negative freqs + value = int(dB[x_pos+d_max] * scale_factor) + value = min(255, max(0, value)) + dc1.SetPen(self.pens[value]) + dc1.DrawRectangle(x_pos*p_width, 0, p_width, 1) + + self.DoDrawing (None) + + def on_average(self, evt): + # print "on_average" + self.fftsink.set_average(evt.IsChecked()) + + 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.Bind(wx.EVT_MENU, self.on_average, id=self.id_average) + #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.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_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_waterfall_sink_f(fg, parent, title, fft_size, input_rate): + + block = waterfall_sink_f(fg, parent, title=title, fft_size=fft_size, + sample_rate=input_rate) + return (block, block.win) + +# returns (block, win). +# block requires a single input stream of gr_complex +# win is a subclass of wxWindow + +def make_waterfall_sink_c(fg, parent, title, fft_size, input_rate): + block = waterfall_sink_c(fg, parent, title=title, fft_size=fft_size, + sample_rate=input_rate) + 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 = 512 + + # build our flow graph + input_rate = 20.000e3 + + # Generate a complex sinusoid + src1 = gr.sig_source_c (input_rate, gr.GR_SIN_WAVE, 5.75e3, 1000) + #src1 = gr.sig_source_c (input_rate, gr.GR_CONST_WAVE, 5.75e3, 1000) + + # 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 = waterfall_sink_c (self, panel, title="Complex Data", fft_size=fft_size, + sample_rate=input_rate, baseband_freq=100e3) + vbox.Add (sink1.win, 1, wx.EXPAND) + self.connect (src1, thr1, sink1) + + # generate a real sinusoid + src2 = gr.sig_source_f (input_rate, gr.GR_SIN_WAVE, 5.75e3, 1000) + #src2 = gr.sig_source_f (input_rate, gr.GR_CONST_WAVE, 5.75e3, 1000) + thr2 = gr.throttle(gr.sizeof_float, input_rate) + sink2 = waterfall_sink_f (self, panel, title="Real Data", fft_size=fft_size, + sample_rate=input_rate, baseband_freq=100e3) + vbox.Add (sink2.win, 1, wx.EXPAND) + self.connect (src2, thr2, sink2) + +def main (): + app = stdgui.stdapp (test_app_flow_graph, + "Waterfall Sink Test App") + app.MainLoop () + +if __name__ == '__main__': + main () |