git.gag.com Git - debian/gnuradio/blob - gr-wxgui/src/python/waterfallsink_nongl.py

   1 #!/usr/bin/env python
   2 #
   3 # Copyright 2003,2004,2005,2007,2008 Free Software Foundation, Inc.
   4 #
   5 # This file is part of GNU Radio
   6 #
   7 # GNU Radio is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3, or (at your option)
  10 # any later version.
  11 #
  12 # GNU Radio is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with GNU Radio; see the file COPYING.  If not, write to
  19 # the Free Software Foundation, Inc., 51 Franklin Street,
  20 # Boston, MA 02110-1301, USA.
  21 #
  22
  23 from gnuradio import gr, gru, window
  24 from gnuradio.wxgui import stdgui2
  25 import wx
  26 import gnuradio.wxgui.plot as plot
  27 import numpy
  28 import os
  29 import threading
  30 import math
  31
  32 default_fftsink_size = (640,240)
  33 default_fft_rate = gr.prefs().get_long('wxgui', 'fft_rate', 15)
  34
  35 class waterfall_sink_base(object):
  36     def __init__(self, input_is_real=False, baseband_freq=0,
  37                  sample_rate=1, fft_size=512,
  38                  fft_rate=default_fft_rate,
  39                  average=False, avg_alpha=None, title=''):
  40
  41         # initialize common attributes
  42         self.baseband_freq = baseband_freq
  43         self.sample_rate = sample_rate
  44         self.fft_size = fft_size
  45         self.fft_rate = fft_rate
  46         self.average = average
  47         if avg_alpha is None:
  48             self.avg_alpha = 2.0 / fft_rate
  49         else:
  50             self.avg_alpha = avg_alpha
  51         self.title = title
  52         self.input_is_real = input_is_real
  53         self.msgq = gr.msg_queue(2)         # queue up to 2 messages
  54
  55     def set_average(self, average):
  56         self.average = average
  57         if average:
  58             self.avg.set_taps(self.avg_alpha)
  59         else:
  60             self.avg.set_taps(1.0)
  61
  62     def set_avg_alpha(self, avg_alpha):
  63         self.avg_alpha = avg_alpha
  64
  65     def set_baseband_freq(self, baseband_freq):
  66         self.baseband_freq = baseband_freq
  67
  68     def set_sample_rate(self, sample_rate):
  69         self.sample_rate = sample_rate
  70         self._set_n()
  71
  72     def _set_n(self):
  73         self.one_in_n.set_n(max(1, int(self.sample_rate/self.fft_size/self.fft_rate)))
  74
  75 class waterfall_sink_f(gr.hier_block2, waterfall_sink_base):
  76     def __init__(self, parent, baseband_freq=0,
  77                  y_per_div=10, ref_level=50, sample_rate=1, fft_size=512,
  78                  fft_rate=default_fft_rate, average=False, avg_alpha=None,
  79                  title='', size=default_fftsink_size):
  80
  81         gr.hier_block2.__init__(self, "waterfall_sink_f",
  82                                 gr.io_signature(1, 1, gr.sizeof_float),
  83                                 gr.io_signature(0,0,0))
  84
  85         waterfall_sink_base.__init__(self, input_is_real=True, baseband_freq=baseband_freq,
  86                                sample_rate=sample_rate, fft_size=fft_size,
  87                                fft_rate=fft_rate,
  88                                average=average, avg_alpha=avg_alpha, title=title)
  89
  90         self.s2p = gr.serial_to_parallel(gr.sizeof_float, self.fft_size)
  91         self.one_in_n = gr.keep_one_in_n(gr.sizeof_float * self.fft_size,
  92                                          max(1, int(self.sample_rate/self.fft_size/self.fft_rate)))
  93
  94         mywindow = window.blackmanharris(self.fft_size)
  95         self.fft = gr.fft_vfc(self.fft_size, True, mywindow)
  96         self.c2mag = gr.complex_to_mag(self.fft_size)
  97         self.avg = gr.single_pole_iir_filter_ff(1.0, self.fft_size)
  98         self.log = gr.nlog10_ff(20, self.fft_size, -20*math.log10(self.fft_size))
  99         self.sink = gr.message_sink(gr.sizeof_float * self.fft_size, self.msgq, True)
 100         self.connect(self, self.s2p, self.one_in_n, self.fft, self.c2mag, self.avg, self.log, self.sink)
 101
 102         self.win = waterfall_window(self, parent, size=size)
 103         self.set_average(self.average)
 104
 105
 106 class waterfall_sink_c(gr.hier_block2, waterfall_sink_base):
 107     def __init__(self, parent, baseband_freq=0,
 108                  y_per_div=10, ref_level=50, sample_rate=1, fft_size=512,
 109                  fft_rate=default_fft_rate, average=False, avg_alpha=None,
 110                  title='', size=default_fftsink_size):
 111
 112         gr.hier_block2.__init__(self, "waterfall_sink_f",
 113                                 gr.io_signature(1, 1, gr.sizeof_gr_complex),
 114                                 gr.io_signature(0,0,0))
 115
 116         waterfall_sink_base.__init__(self, input_is_real=False, baseband_freq=baseband_freq,
 117                                      sample_rate=sample_rate, fft_size=fft_size,
 118                                      fft_rate=fft_rate,
 119                                      average=average, avg_alpha=avg_alpha, title=title)
 120
 121         self.s2p = gr.serial_to_parallel(gr.sizeof_gr_complex, self.fft_size)
 122         self.one_in_n = gr.keep_one_in_n(gr.sizeof_gr_complex * self.fft_size,
 123                                          max(1, int(self.sample_rate/self.fft_size/self.fft_rate)))
 124
 125         mywindow = window.blackmanharris(self.fft_size)
 126         self.fft = gr.fft_vcc(self.fft_size, True, mywindow)
 127         self.c2mag = gr.complex_to_mag(self.fft_size)
 128         self.avg = gr.single_pole_iir_filter_ff(1.0, self.fft_size)
 129         self.log = gr.nlog10_ff(20, self.fft_size, -20*math.log10(self.fft_size))
 130         self.sink = gr.message_sink(gr.sizeof_float * self.fft_size, self.msgq, True)
 131         self.connect(self, self.s2p, self.one_in_n, self.fft, self.c2mag, self.avg, self.log, self.sink)
 132
 133         self.win = waterfall_window(self, parent, size=size)
 134         self.set_average(self.average)
 135
 136
 137 # ------------------------------------------------------------------------
 138
 139 myDATA_EVENT = wx.NewEventType()
 140 EVT_DATA_EVENT = wx.PyEventBinder (myDATA_EVENT, 0)
 141
 142
 143 class DataEvent(wx.PyEvent):
 144     def __init__(self, data):
 145         wx.PyEvent.__init__(self)
 146         self.SetEventType (myDATA_EVENT)
 147         self.data = data
 148
 149     def Clone (self):
 150         self.__class__ (self.GetId())
 151
 152
 153 class input_watcher (threading.Thread):
 154     def __init__ (self, msgq, fft_size, event_receiver, **kwds):
 155         threading.Thread.__init__ (self, **kwds)
 156         self.setDaemon (1)
 157         self.msgq = msgq
 158         self.fft_size = fft_size
 159         self.event_receiver = event_receiver
 160         self.keep_running = True
 161         self.start ()
 162
 163     def run (self):
 164         while (self.keep_running):
 165             msg = self.msgq.delete_head()  # blocking read of message queue
 166             itemsize = int(msg.arg1())
 167             nitems = int(msg.arg2())
 168
 169             s = msg.to_string()            # get the body of the msg as a string
 170
 171             # There may be more than one FFT frame in the message.
 172             # If so, we take only the last one
 173             if nitems > 1:
 174                 start = itemsize * (nitems - 1)
 175                 s = s[start:start+itemsize]
 176
 177             complex_data = numpy.fromstring (s, numpy.float32)
 178             de = DataEvent (complex_data)
 179             wx.PostEvent (self.event_receiver, de)
 180             del de
 181
 182
 183 class waterfall_window (wx.Panel):
 184     def __init__ (self, fftsink, parent, id = -1,
 185                   pos = wx.DefaultPosition, size = wx.DefaultSize,
 186                   style = wx.DEFAULT_FRAME_STYLE, name = ""):
 187         wx.Panel.__init__(self, parent, id, pos, size, style, name)
 188         self.set_baseband_freq = fftsink.set_baseband_freq
 189         self.fftsink = fftsink
 190         self.bm = wx.EmptyBitmap(self.fftsink.fft_size, 300, -1)
 191
 192         self.scale_factor = 5.0           # FIXME should autoscale, or set this
 193
 194         dc1 = wx.MemoryDC()
 195         dc1.SelectObject(self.bm)
 196         dc1.Clear()
 197
 198         self.pens = self.make_pens()
 199
 200         wx.EVT_PAINT( self, self.OnPaint )
 201         wx.EVT_CLOSE (self, self.on_close_window)
 202         EVT_DATA_EVENT (self, self.set_data)
 203
 204         self.build_popup_menu()
 205
 206         wx.EVT_CLOSE (self, self.on_close_window)
 207         self.Bind(wx.EVT_RIGHT_UP, self.on_right_click)
 208
 209         self.input_watcher = input_watcher(fftsink.msgq, fftsink.fft_size, self)
 210
 211
 212     def on_close_window (self, event):
 213         print "waterfall_window: on_close_window"
 214         self.keep_running = False
 215
 216     def const_list(self,const,len):
 217         return [const] * len
 218
 219     def make_colormap(self):
 220         r = []
 221         r.extend(self.const_list(0,96))
 222         r.extend(range(0,255,4))
 223         r.extend(self.const_list(255,64))
 224         r.extend(range(255,128,-4))
 225
 226         g = []
 227         g.extend(self.const_list(0,32))
 228         g.extend(range(0,255,4))
 229         g.extend(self.const_list(255,64))
 230         g.extend(range(255,0,-4))
 231         g.extend(self.const_list(0,32))
 232
 233         b = range(128,255,4)
 234         b.extend(self.const_list(255,64))
 235         b.extend(range(255,0,-4))
 236         b.extend(self.const_list(0,96))
 237         return (r,g,b)
 238
 239     def make_pens(self):
 240         (r,g,b) = self.make_colormap()
 241         pens = []
 242         for i in range(0,256):
 243             colour = wx.Colour(r[i], g[i], b[i])
 244             pens.append( wx.Pen(colour, 2, wx.SOLID))
 245         return pens
 246
 247     def OnPaint(self, event):
 248         dc = wx.PaintDC(self)
 249         self.DoDrawing(dc)
 250
 251     def DoDrawing(self, dc=None):
 252         if dc is None:
 253             dc = wx.ClientDC(self)
 254         dc.DrawBitmap(self.bm, 0, 0, False )
 255
 256
 257     def const_list(self,const,len):
 258         a = [const]
 259         for i in range(1,len):
 260             a.append(const)
 261         return a
 262
 263
 264     def set_data (self, evt):
 265         dB = evt.data
 266         L = len (dB)
 267
 268         dc1 = wx.MemoryDC()
 269         dc1.SelectObject(self.bm)
 270         dc1.Blit(0,1,self.fftsink.fft_size,300,dc1,0,0,wx.COPY,False,-1,-1)
 271
 272         x = max(abs(self.fftsink.sample_rate), abs(self.fftsink.baseband_freq))
 273         if x >= 1e9:
 274             sf = 1e-9
 275             units = "GHz"
 276         elif x >= 1e6:
 277             sf = 1e-6
 278             units = "MHz"
 279         else:
 280             sf = 1e-3
 281             units = "kHz"
 282
 283
 284         if self.fftsink.input_is_real:     # only plot 1/2 the points
 285             d_max = L/2
 286             p_width = 2
 287         else:
 288             d_max = L/2
 289             p_width = 1
 290
 291         scale_factor = self.scale_factor
 292         if self.fftsink.input_is_real:     # real fft
 293            for x_pos in range(0, d_max):
 294                value = int(dB[x_pos] * scale_factor)
 295                value = min(255, max(0, value))
 296                dc1.SetPen(self.pens[value])
 297                dc1.DrawRectangle(x_pos*p_width, 0, p_width, 2)
 298         else:                               # complex fft
 299            for x_pos in range(0, d_max):    # positive freqs
 300                value = int(dB[x_pos] * scale_factor)
 301                value = min(255, max(0, value))
 302                dc1.SetPen(self.pens[value])
 303                dc1.DrawRectangle(x_pos*p_width + d_max, 0, p_width, 2)
 304            for x_pos in range(0 , d_max):   # negative freqs
 305                value = int(dB[x_pos+d_max] * scale_factor)
 306                value = min(255, max(0, value))
 307                dc1.SetPen(self.pens[value])
 308                dc1.DrawRectangle(x_pos*p_width, 0, p_width, 2)
 309
 310         del dc1
 311         self.DoDrawing (None)
 312
 313     def on_average(self, evt):
 314         # print "on_average"
 315         self.fftsink.set_average(evt.IsChecked())
 316
 317     def on_right_click(self, event):
 318         menu = self.popup_menu
 319         for id, pred in self.checkmarks.items():
 320             item = menu.FindItemById(id)
 321             item.Check(pred())
 322         self.PopupMenu(menu, event.GetPosition())
 323
 324
 325     def build_popup_menu(self):
 326         self.id_incr_ref_level = wx.NewId()
 327         self.id_decr_ref_level = wx.NewId()
 328         self.id_incr_y_per_div = wx.NewId()
 329         self.id_decr_y_per_div = wx.NewId()
 330         self.id_y_per_div_1 = wx.NewId()
 331         self.id_y_per_div_2 = wx.NewId()
 332         self.id_y_per_div_5 = wx.NewId()
 333         self.id_y_per_div_10 = wx.NewId()
 334         self.id_y_per_div_20 = wx.NewId()
 335         self.id_average = wx.NewId()
 336
 337         self.Bind(wx.EVT_MENU, self.on_average, id=self.id_average)
 338         #self.Bind(wx.EVT_MENU, self.on_incr_ref_level, id=self.id_incr_ref_level)
 339         #self.Bind(wx.EVT_MENU, self.on_decr_ref_level, id=self.id_decr_ref_level)
 340         #self.Bind(wx.EVT_MENU, self.on_incr_y_per_div, id=self.id_incr_y_per_div)
 341         #self.Bind(wx.EVT_MENU, self.on_decr_y_per_div, id=self.id_decr_y_per_div)
 342         #self.Bind(wx.EVT_MENU, self.on_y_per_div, id=self.id_y_per_div_1)
 343         #self.Bind(wx.EVT_MENU, self.on_y_per_div, id=self.id_y_per_div_2)
 344         #self.Bind(wx.EVT_MENU, self.on_y_per_div, id=self.id_y_per_div_5)
 345         #self.Bind(wx.EVT_MENU, self.on_y_per_div, id=self.id_y_per_div_10)
 346         #self.Bind(wx.EVT_MENU, self.on_y_per_div, id=self.id_y_per_div_20)
 347
 348
 349         # make a menu
 350         menu = wx.Menu()
 351         self.popup_menu = menu
 352         menu.AppendCheckItem(self.id_average, "Average")
 353         # menu.Append(self.id_incr_ref_level, "Incr Ref Level")
 354         # menu.Append(self.id_decr_ref_level, "Decr Ref Level")
 355         # menu.Append(self.id_incr_y_per_div, "Incr dB/div")
 356         # menu.Append(self.id_decr_y_per_div, "Decr dB/div")
 357         # menu.AppendSeparator()
 358         # we'd use RadioItems for these, but they're not supported on Mac
 359         #menu.AppendCheckItem(self.id_y_per_div_1, "1 dB/div")
 360         #menu.AppendCheckItem(self.id_y_per_div_2, "2 dB/div")
 361         #menu.AppendCheckItem(self.id_y_per_div_5, "5 dB/div")
 362         #menu.AppendCheckItem(self.id_y_per_div_10, "10 dB/div")
 363         #menu.AppendCheckItem(self.id_y_per_div_20, "20 dB/div")
 364
 365         self.checkmarks = {
 366             self.id_average : lambda : self.fftsink.average
 367             #self.id_y_per_div_1 : lambda : self.fftsink.y_per_div == 1,
 368             #self.id_y_per_div_2 : lambda : self.fftsink.y_per_div == 2,
 369             #self.id_y_per_div_5 : lambda : self.fftsink.y_per_div == 5,
 370             #self.id_y_per_div_10 : lambda : self.fftsink.y_per_div == 10,
 371             #self.id_y_per_div_20 : lambda : self.fftsink.y_per_div == 20,
 372             }
 373
 374
 375 def next_up(v, seq):
 376     """
 377     Return the first item in seq that is > v.
 378     """
 379     for s in seq:
 380         if s > v:
 381             return s
 382     return v
 383
 384 def next_down(v, seq):
 385     """
 386     Return the last item in seq that is < v.
 387     """
 388     rseq = list(seq[:])
 389     rseq.reverse()
 390
 391     for s in rseq:
 392         if s < v:
 393             return s
 394     return v
 395
 396
 397 # ----------------------------------------------------------------
 398 # Standalone test app
 399 # ----------------------------------------------------------------
 400
 401 class test_top_block (stdgui2.std_top_block):
 402     def __init__(self, frame, panel, vbox, argv):
 403         stdgui2.std_top_block.__init__ (self, frame, panel, vbox, argv)
 404
 405         fft_size = 512
 406
 407         # build our flow graph
 408         input_rate = 20.000e3
 409
 410         # Generate a complex sinusoid
 411         self.src1 = gr.sig_source_c (input_rate, gr.GR_SIN_WAVE, 5.75e3, 1000)
 412         #src1 = gr.sig_source_c (input_rate, gr.GR_CONST_WAVE, 5.75e3, 1000)
 413
 414         # We add these throttle blocks so that this demo doesn't
 415         # suck down all the CPU available.  Normally you wouldn't use these.
 416         self.thr1 = gr.throttle(gr.sizeof_gr_complex, input_rate)
 417
 418         sink1 = waterfall_sink_c (panel, title="Complex Data", fft_size=fft_size,
 419                                   sample_rate=input_rate, baseband_freq=100e3)
 420         self.connect(self.src1, self.thr1, sink1)
 421         vbox.Add (sink1.win, 1, wx.EXPAND)
 422
 423         # generate a real sinusoid
 424         self.src2 = gr.sig_source_f (input_rate, gr.GR_SIN_WAVE, 5.75e3, 1000)
 425         self.thr2 = gr.throttle(gr.sizeof_float, input_rate)
 426         sink2 = waterfall_sink_f (panel, title="Real Data", fft_size=fft_size,
 427                                   sample_rate=input_rate, baseband_freq=100e3)
 428         self.connect(self.src2, self.thr2, sink2)
 429         vbox.Add (sink2.win, 1, wx.EXPAND)
 430
 431
 432 def main ():
 433     app = stdgui2.stdapp (test_top_block, "Waterfall Sink Test App")
 434     app.MainLoop ()
 435
 436 if __name__ == '__main__':
 437     main ()