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Diffstat (limited to 'gnuradio-examples/python/usrp/usrp_tv_rcv_nogui.py')
| -rwxr-xr-x | gnuradio-examples/python/usrp/usrp_tv_rcv_nogui.py | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/gnuradio-examples/python/usrp/usrp_tv_rcv_nogui.py b/gnuradio-examples/python/usrp/usrp_tv_rcv_nogui.py deleted file mode 100755 index e6a8de1be..000000000 --- a/gnuradio-examples/python/usrp/usrp_tv_rcv_nogui.py +++ /dev/null @@ -1,199 +0,0 @@ -#!/usr/bin/env python -# -# Copyright 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. -# - -""" -Reads from a file and generates PAL TV pictures in black and white -which can be displayed using ImageMagick or realtime using gr-video-sdl -(To capture the input file Use usrp_rx_file.py, or use usrp_rx_cfile.py --output-shorts if you have a recent enough usrp_rx_cfile.py) -Can also use usrp directly as capture source, but then you need a higher decimation factor (64) -and thus get a lower horizontal resulution. -There is no synchronisation yet. The sync blocks are in development but not yet in cvs. - -""" - -from gnuradio import gr, eng_notation -from gnuradio import audio -from gnuradio import usrp -from gnuradio.eng_option import eng_option -from optparse import OptionParser -import sys - -try: - from gnuradio import video_sdl -except: - print "FYI: gr-video-sdl is not installed" - print "realtime \"sdl\" video output window will not be available" - - -class my_top_block(gr.top_block): - - def __init__(self): - gr.top_block.__init__(self) - - usage="%prog: [options] output_filename. \n Special output_filename \"sdl\" will use video_sink_sdl as realtime output window. " \ - "You then need to have gr-video-sdl installed. \n" \ - "Make sure your input capture file containes interleaved shorts not complex floats" - parser = OptionParser(option_class=eng_option, usage=usage) - parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=(0, 0), - help="select USRP Rx side A or B (default=A)") - parser.add_option("-c", "--contrast", type="eng_float", default=1.0, - help="set contrast (default is 1.0)") - parser.add_option("-b", "--brightness", type="eng_float", default=0.0, - help="set brightness (default is 0)") - parser.add_option("-d", "--decim", type="int", default=8, - help="set fgpa decimation rate to DECIM [default=%default]") - parser.add_option("-i", "--in-filename", type="string", default=None, - help="Use input file as source. samples must be interleaved shorts \n " + - "Use usrp_rx_file.py or usrp_rx_cfile.py --output-shorts. \n" - "Special name \"usrp\" results in realtime capturing and processing using usrp. \n" + - "You then probably need a decimation factor of 64 or higher.") - parser.add_option("-f", "--freq", type="eng_float", default=None, - help="set frequency to FREQ.\nNote that the frequency of the video carrier is not at the middle of the TV channel", metavar="FREQ") - parser.add_option("-g", "--gain", type="eng_float", default=None, - help="set gain in dB (default is midpoint)") - parser.add_option("-p", "--pal", action="store_true", default=False, - help="PAL video format (this is the default)") - parser.add_option("-n", "--ntsc", action="store_true", default=False, - help="NTSC video format") - parser.add_option("-r", "--repeat", action="store_false", default=True, - help="repeat in_file in a loop") - parser.add_option("-8", "--width-8", action="store_true", default=False, - help="Enable 8-bit samples across USB") - parser.add_option("-N", "--nframes", type="eng_float", default=None, - help="number of frames to collect [default=+inf]") - parser.add_option( "--no-hb", action="store_true", default=False, - help="don't use halfband filter in usrp") - (options, args) = parser.parse_args () - if not (len(args) == 1): - parser.print_help() - sys.stderr.write('You must specify the output. FILENAME or sdl \n'); - sys.exit(1) - - filename = args[0] - - if options.in_filename is None: - parser.print_help() - sys.stderr.write('You must specify the input -i FILENAME or -i usrp\n'); - raise SystemExit, 1 - - if not (filename=="sdl"): - options.repeat=False - - if not (options.in_filename=="usrp"): - self.filesource = gr.file_source(gr.sizeof_short,options.in_filename,options.repeat) # file is data source, capture with usr_rx_csfile.py - self.istoc = gr.interleaved_short_to_complex() - self.connect(self.filesource,self.istoc) - self.adc_rate=64e6 - self.src=self.istoc - else: - if options.freq is None: - parser.print_help() - sys.stderr.write('You must specify the frequency with -f FREQ\n'); - raise SystemExit, 1 - if abs(options.freq) < 1e6: - options.freq *= 1e6 - if options.no_hb or (options.decim<8): - self.fpga_filename="std_4rx_0tx.rbf" #contains 4 Rx paths without halfbands and 0 tx paths - else: - self.fpga_filename="std_2rxhb_2tx.rbf" # contains 2 Rx paths with halfband filters and 2 tx paths (the default) - - # build the graph - self.u = usrp.source_c(decim_rate=options.decim,fpga_filename=self.fpga_filename) - self.src=self.u - if options.width_8: - sample_width = 8 - sample_shift = 8 - format = self.u.make_format(sample_width, sample_shift) - r = self.u.set_format(format) - self.adc_rate=self.u.adc_freq() - if options.rx_subdev_spec is None: - options.rx_subdev_spec = usrp.pick_rx_subdevice(self.u) - self.u.set_mux(usrp.determine_rx_mux_value(self.u, options.rx_subdev_spec)) - # determine the daughterboard subdevice we're using - self.subdev = usrp.selected_subdev(self.u, options.rx_subdev_spec) - print "Using RX d'board %s" % (self.subdev.side_and_name(),) - - if options.gain is None: - # if no gain was specified, use the mid-point in dB - g = self.subdev.gain_range() - options.gain = float(g[0]+g[1])/2 - self.subdev.set_gain(options.gain) - - r = self.u.tune(0, self.subdev, options.freq) - if not r: - sys.stderr.write('Failed to set frequency\n') - raise SystemExit, 1 - - input_rate = self.adc_rate / options.decim - print "video sample rate %s" % (eng_notation.num_to_str(input_rate)) - - self.agc=gr.agc_cc(1e-7,1.0,1.0) #1e-7 - self.am_demod = gr.complex_to_mag () - self.set_blacklevel=gr.add_const_ff(options.brightness +255.0) - self.invert_and_scale = gr.multiply_const_ff (-options.contrast *128.0*255.0/(200.0)) - self.f2uc=gr.float_to_uchar() - - # sdl window as final sink - if not (options.pal or options.ntsc): - options.pal=True #set default to PAL - if options.pal: - lines_per_frame=625.0 - frames_per_sec=25.0 - show_width=768 - elif options.ntsc: - lines_per_frame=525.0 - frames_per_sec=29.97002997 - show_width=640 - width=int(input_rate/(lines_per_frame*frames_per_sec)) - height=int(lines_per_frame) - - if filename=="sdl": - #Here comes the tv screen, you have to build and install gr-video-sdl for this (subproject of gnuradio, only in cvs for now) - try: - video_sink = video_sdl.sink_uc ( frames_per_sec, width, height,0,show_width,height) - except: - print "gr-video-sdl is not installed" - print "realtime \"sdl\" video output window is not available" - raise SystemExit, 1 - self.dst=video_sink - else: - print "You can use the imagemagick display tool to show the resulting imagesequence" - print "use the following line to show the demodulated TV-signal:" - print "display -depth 8 -size " +str(width)+ "x" + str(height) + " gray:" +filename - print "(Use the spacebar to advance to next frames)" - file_sink=gr.file_sink(gr.sizeof_char, filename) - self.dst =file_sink - - if options.nframes is None: - self.connect(self.src, self.agc) - else: - self.head = gr.head(gr.sizeof_gr_complex, int(options.nframes*width*height)) - self.connect(self.src, self.head, self.agc) - - self.connect (self.agc,self.am_demod,self.invert_and_scale, self.set_blacklevel,self.f2uc,self.dst) - - -if __name__ == '__main__': - try: - my_top_block().run() - except KeyboardInterrupt: - pass |