diff options
Diffstat (limited to 'gr-uhd/examples/python/usrp_tv_rcv.py')
| -rwxr-xr-x | gr-uhd/examples/python/usrp_tv_rcv.py | 48 |
1 files changed, 24 insertions, 24 deletions
diff --git a/gr-uhd/examples/python/usrp_tv_rcv.py b/gr-uhd/examples/python/usrp_tv_rcv.py index 700915bf8..b49a5ea71 100755 --- a/gr-uhd/examples/python/usrp_tv_rcv.py +++ b/gr-uhd/examples/python/usrp_tv_rcv.py @@ -1,24 +1,24 @@ #!/usr/bin/env python # # Copyright 2005-2007,2011 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. -# +# """ Realtime capture and display of analog Tv stations. @@ -95,7 +95,7 @@ class tv_rx_block (stdgui2.std_top_block): if not ((len(args) == 1) or (len(args) == 0)): parser.print_help() sys.exit(1) - + if len(args) == 1: filename = args[0] else: @@ -103,7 +103,7 @@ class tv_rx_block (stdgui2.std_top_block): self.frame = frame self.panel = panel - + self.contrast = options.contrast self.brightness = options.brightness self.state = "FREQ" @@ -136,7 +136,7 @@ class tv_rx_block (stdgui2.std_top_block): # Set the subdevice spec if(options.spec): self.u.set_subdev_spec(options.spec, 0) - + # Set the antenna if(options.antenna): self.u.set_antenna(options.antenna, 0) @@ -151,7 +151,7 @@ class tv_rx_block (stdgui2.std_top_block): self.src=self.u - self.gain = options.gain + self.gain = options.gain f2uc=gr.float_to_uchar() @@ -189,10 +189,10 @@ class tv_rx_block (stdgui2.std_top_block): print "use the following line to show the demodulated TV-signal:" print "display -depth 8 -size " +str(width)+ "x" + str(height) \ + " gray:" + options.out_filename - print "(Use the spacebar to advance to next frames)" + print "(Use the spacebar to advance to next frames)" options.repeat=False file_sink=gr.file_sink(gr.sizeof_char, options.out_filename) - self.dst =file_sink + self.dst =file_sink self.agc=gr.agc_cc(1e-7,1.0,1.0) #1e-7 self.am_demod = gr.complex_to_mag () @@ -219,7 +219,7 @@ class tv_rx_block (stdgui2.std_top_block): self.tv_sync_adv=gr.tv_sync_adv(usrp_rate, 0, False, False, 0.0, 255.0, 0.01, 1.0, 0.0, False) self.connect (self.src, self.am_demod, self.invert_and_scale, - self.tv_sync_adv, s2f, f2uc, self.dst) + self.tv_sync_adv, s2f, f2uc, self.dst) elif process_type=='do_nullsink': #self.connect (self.src, self.am_demod,self.invert_and_scale,f2uc,video_sink) @@ -229,16 +229,16 @@ class tv_rx_block (stdgui2.std_top_block): elif process_type=='do_tv_sync_corr': frame_size=width*height #int(usrp_rate/25.0) nframes=10# 32 - search_window=20*nframes + search_window=20*nframes debug=False video_alpha=0.3 #0.1 corr_alpha=0.3 - + #Note: this block is not yet in cvs tv_corr=gr.tv_correlator_ff(frame_size,nframes, search_window, - video_alpha, corr_alpha,debug) + video_alpha, corr_alpha,debug) shift=gr.add_const_ff(-0.7) - + self.connect (self.src, self.agc, self.am_demod, tv_corr, self.invert_and_scale, self.set_blacklevel, f2uc, self.dst) @@ -248,7 +248,7 @@ class tv_rx_block (stdgui2.std_top_block): self.connect(src_vertical_bars, f2uc, self.dst) self._build_gui(vbox, usrp_rate, usrp_rate, usrp_rate) - + frange = self.u.get_freq_range() if(frange.start() > self.tv_freq_max or frange.stop() < self.tv_freq_min): @@ -290,13 +290,13 @@ class tv_rx_block (stdgui2.std_top_block): vbox.Add (post_demod_fft.win, 4, wx.EXPAND) if 0: - post_filt_fft = fftsink.fft_sink_f (self, self.panel, title="Post Filter", + post_filt_fft = fftsink.fft_sink_f (self, self.panel, title="Post Filter", fft_size=512, sample_rate=audio_rate, y_per_div=10, ref_level=-40) self.connect (self.set_blacklevel, post_filt) vbox.Add (fft_win4, 4, wx.EXPAND) - + # control area form at bottom self.myform = myform = form.form() @@ -373,7 +373,7 @@ class tv_rx_block (stdgui2.std_top_block): elif self.rot <=-3: self.set_brightness(self.brightness - step) self.rot += 3 - + def on_button (self, event): if event.value == 0: # button up return @@ -385,7 +385,7 @@ class tv_rx_block (stdgui2.std_top_block): else: self.state = "FREQ" self.update_status_bar () - + def set_contrast (self, contrast): self.contrast = contrast @@ -398,7 +398,7 @@ class tv_rx_block (stdgui2.std_top_block): self.set_blacklevel.set_k(self.brightness +255.0) self.myform['brightness'].set_value(self.brightness) self.update_status_bar () - + def set_freq(self, target_freq): """ Set the center frequency we're interested in. @@ -430,13 +430,13 @@ class tv_rx_block (stdgui2.std_top_block): self.myform['gain'].set_value(gain) # update displayed value self.u.set_gain(gain) self.update_status_bar() - + def update_status_bar (self): msg = "Setting:%s Contrast:%r Brightness:%r Gain: %r" % \ (self.state, self.contrast,self.brightness,self.gain) self._set_status_msg(msg, 1) #self.src_fft.set_baseband_freq(self.freq) - + if __name__ == '__main__': app = stdgui2.stdapp (tv_rx_block, "USRP TV RX black-and-white") |