[Commit-gnuradio] r4447 - gnuradio/branches/developers/nldudok1/general-wip/gnuradio-examples/python/usrp

[nldudok1]

Author: nldudok1
Date: 2007-02-11 16:30:27 -0700 (Sun, 11 Feb 2007)
New Revision: 4447

Added:
   
gnuradio/branches/developers/nldudok1/general-wip/gnuradio-examples/python/usrp/usrp_fmtv_rcv.py
Log:
added fmtv sample (no sync color or audio yet). Works on ASTRA satellite, not 
tested with amateur TV yet.

Added: 
gnuradio/branches/developers/nldudok1/general-wip/gnuradio-examples/python/usrp/usrp_fmtv_rcv.py
===================================================================
--- 
gnuradio/branches/developers/nldudok1/general-wip/gnuradio-examples/python/usrp/usrp_fmtv_rcv.py
                            (rev 0)
+++ 
gnuradio/branches/developers/nldudok1/general-wip/gnuradio-examples/python/usrp/usrp_fmtv_rcv.py
    2007-02-11 23:30:27 UTC (rev 4447)
@@ -0,0 +1,438 @@
+#!/usr/bin/env python
+"""
+Realtime capture and display of analog Tv stations.
+Can also use a file as source or sink
+When you use an output file you can show the results frame-by-frame using 
ImageMagick
+When you want to use the realtime sdl display window you must first install 
gr-video-sdl (is in gnuradio cvs).
+When you use a file source, in stead of the usrp, make sure you capture 
interleaved shorts.
+(Use usrp_rx_file.py, or use usrp_rx_cfile.py --output-shorts if you have a 
recent enough usrp_rx_cfile.py)
+There is no synchronisation yet. The sync blocks are in development but not 
yet in cvs.
+
+"""
+from gnuradio import gr, gru, eng_notation, optfir
+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"
+from gnuradio import usrp
+from gnuradio import blks
+from gnuradio.eng_option import eng_option
+from gnuradio.wxgui import slider, powermate
+from gnuradio.wxgui import stdgui, fftsink, form
+from optparse import OptionParser
+import usrp_dbid
+import sys
+import math
+import wx
+import math
+
+# To debug, insert this in your test code...
+#import os
+#print 'Blocked waiting for GDB attach (pid = %d)' % (os.getpid(),)
+#raw_input ('Press Enter to continue: ')
+# remainder of your test code follows...
+
+def pick_subdevice(u):
+    """
+    The user didn't specify a subdevice on the command line.
+    Try for one of these, in order: TV_RX, BASIC_RX, whatever is on side A.
+
+    @return a subdev_spec
+    """
+    return usrp.pick_subdev(u, (usrp_dbid.TV_RX,
+                                usrp_dbid.TV_RX_REV_2,
+                                usrp_dbid.BASIC_RX))
+
+
+class tv_rx_graph (stdgui.gui_flow_graph):
+    def __init__(self,frame,panel,vbox,argv):
+        stdgui.gui_flow_graph.__init__ (self,frame,panel,vbox,argv)
+
+        usage="%prog: [options] [input_filename]. \n If you don't specify an 
input filename the usrp will be used as source\n " \
+              "Make sure your input capture file containes interleaved shorts 
not complex floats"
+        parser=OptionParser(option_class=eng_option)
+        parser.add_option("-R", "--rx-subdev-spec", type="subdev", 
default=None,
+                          help="select USRP Rx side A or B (default=A)")
+        parser.add_option("-d", "--decim", type="int", default=64,
+                          help="set fgpa decimation rate to DECIM 
[default=%default]")
+        parser.add_option("-f", "--freq", type="eng_float", default=519.25e6,
+                          help="set frequency to FREQ", metavar="FREQ")
+        parser.add_option("-g", "--gain", type="eng_float", default=None,
+                          help="set gain in dB (default is midpoint)")
+        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("-8", "--width-8", action="store_true", 
default=False,
+                          help="Enable 8-bit samples across USB")
+        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("-F", "--nframes",  type="int", default=2,
+                          help="number of frames to use for sync detection and 
framerate")
+        parser.add_option("-S", "--search_window",  type="int", default=4,
+                          help="number of samples to use for correlation 
search window")
+        parser.add_option("-V", "--video_alpha", type="eng_float", default=1.0,
+                          help="set video alpha (multi-frame averaging)")
+        parser.add_option("-C", "--corr_alpha", type="eng_float", default=1.0,
+                          help="set correlation alpha")
+        parser.add_option("-o", "--out-filename", type="string", default="sdl",
+                          help="For example out_raw_uchar.gray. If you don't 
specify an output filename you will get a video_sink_sdl realtime output 
window. You then need to have gr-video-sdl installed)")
+        parser.add_option("-P", "--pga", type="eng_float", default=None,
+                          help="set pga")
+        parser.add_option("-t", "--type", type="string", 
default="do_fm_no_sync",
+                          help="do_no_sync, do_fm_no_sync, do_fm_sync_corr ")
+        parser.add_option("-r", "--repeat", action="store_false", default=True,
+                          help="do not repeat file in a loop")
+        parser.add_option( "--debug", action="store_true", default=False,
+                          help="output debugging info")
+        parser.add_option("-N", "--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) or (len(args) == 0)):
+            parser.print_help()
+            sys.exit(1)
+        
+        if len(args) == 1:
+          filename = args[0]
+        else:
+          filename = None
+
+        self.frame = frame
+        self.panel = panel
+        
+        self.contrast = options.contrast
+        self.brightness = options.brightness
+        self.state = "FREQ"
+        self.freq = 0
+        self.pga=options.pga
+
+        # build graph
+
+        self.u=None
+
+        usrp_decim = options.decim # 32
+        
+        if not (options.out_filename=="sdl"):
+          options.repeat=False
+
+        if not ((filename is None) or (filename=="usrp")):
+          self.filesource = 
gr.file_source(gr.sizeof_short,filename,options.repeat) # file is data source
+          self.istoc = gr.interleaved_short_to_complex()
+          self.connect(self.filesource,self.istoc)
+          self.src=self.istoc
+          options.gain=0.0
+          self.gain=0.0
+        else:
+          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)
+          self.u = usrp.source_c(0,fpga_filename=self.fpga_filename)           
         # usrp is data source
+          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.u.set_decim_rate(usrp_decim)
+          if options.rx_subdev_spec is None:
+            options.rx_subdev_spec = pick_subdevice(self.u)
+          self.u.set_mux(usrp.determine_rx_mux_value(self.u, 
options.rx_subdev_spec))
+          self.subdev = usrp.selected_subdev(self.u, options.rx_subdev_spec)
+          try:
+             adc_rate = self.u.adc_rate()                # 64 MS/s
+          except:
+             adc_rate=64.0e6
+             pass
+          try:
+            self.subdev.set_bw(0.8*adc_rate/float(options.decim)) #30.0e6) 
#17.0e6)
+          except:
+            pass
+          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.src=self.u
+
+        usrp_rate = adc_rate / usrp_decim           # 320 kS/s
+
+        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(usrp_rate/(lines_per_frame*frames_per_sec))
+        height=int(lines_per_frame)
+
+        if (options.out_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:" + options.out_filename
+          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.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(0.0)
+        self.invert_and_scale = gr.multiply_const_ff (0.0) #-self.contrast 
*128.0*255.0/(200.0)
+
+        # now wire it all together
+        #sample_rate=options.width*options.height*options.framerate
+
+        nframes=options.nframes
+        search_window=options.search_window*nframes 
+        debug=options.debug
+        video_alpha=options.video_alpha 
+        corr_alpha=options.corr_alpha 
+        #process_type='do_no_sync'
+        #process_type='do_fm_no_sync'
+        #process_type='do_fm_sync_corr'
+        process_type=options.type
+        if process_type=='do_no_sync':
+          self.connect (self.src, 
self.agc,self.am_demod,self.invert_and_scale, self.set_blacklevel,f2uc,self.dst)
+        elif process_type=='do_fm_no_sync':
+          max_dev = 4.0e6
+          fm_demod_gain = 1.0 * 255.0 * usrp_rate/(2*math.pi*max_dev) #have to 
invert because is inverted again later on in the contrat block
+          self.fm_demod = gr.quadrature_demod_cf (fm_demod_gain)
+          self.connect (self.src, self.fm_demod, self.invert_and_scale, 
self.set_blacklevel,f2uc,self.dst) #self.invert_and_scale
+        elif process_type=='do_fm_sync_corr':
+          frame_size=width*height #int(usrp_rate/25.0)
+          tv_corr=gr.tv_correlator_ff(frame_size,nframes, search_window, 
video_alpha, corr_alpha,debug) #Note: this block is not yet in cvs
+          max_dev = 4.0e6
+          fm_demod_gain = 1.0*usrp_rate/(2*math.pi*max_dev) #have to invert 
because is inverted again later on in the contrat block
+          self.fm_demod = gr.quadrature_demod_cf (fm_demod_gain)
+          self.connect (self.src, self.fm_demod,tv_corr,self.invert_and_scale, 
self.set_blacklevel,f2uc,self.dst)
+        elif process_type=='do_tv_sync_adv':
+          #defaults: gr.tv_sync_adv (double sampling_freq, unsigned int 
tv_format,bool output_active_video_only=false, bool do_invert=false, double 
wanted_black_level=0.0, double wanted_white_level=255.0, double avg_alpha=0.1, 
double initial_gain=1.0, double initial_offset=0.0,bool debug=false)
+          
self.tv_sync_adv=gr.tv_sync_adv(usrp_rate,0,False,False,0.0,255.0,0.01,1.0,0.0,False)
 #note, this block is not yet in cvs
+          self.connect (self.src, 
self.am_demod,self.invert_and_scale,self.tv_sync_adv,s2f,f2uc,self.dst) 
+        elif process_type=='do_nullsink': #test usb bandwidth
+          c2r=gr.complex_to_real()
+          nullsink=gr.null_sink(gr.sizeof_float)
+          self.connect (self.src, c2r,nullsink) 
+        elif process_type=='do_tv_sync_corr':
+          frame_size=width*height #int(usrp_rate/25.0)
+          tv_corr=gr.tv_correlator_ff(frame_size,nframes, search_window, 
video_alpha, corr_alpha,debug) #Note: this block is not yet in cvs
+          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) #self.agc,
+        else: # process_type=='do_test_image':
+          src_vertical_bars = gr.sig_source_f (usrp_rate, gr.GR_SIN_WAVE, 10.0 
*usrp_rate/320, 255,128)
+          self.connect(src_vertical_bars,f2uc,self.dst)
+
+        self._build_gui(vbox, usrp_rate, usrp_rate, usrp_rate)
+
+   
+        if abs(options.freq) < 1e6:
+            options.freq *= 1e6
+
+        # set initial values
+        self.set_gain(options.gain)
+        self.set_contrast(self.contrast)
+        self.set_brightness(options.brightness)
+        if not(self.set_freq(options.freq)):
+            self._set_status_msg("Failed to set initial frequency")
+
+
+    def _set_status_msg(self, msg, which=0):
+        self.frame.GetStatusBar().SetStatusText(msg, which)
+
+
+    def _build_gui(self, vbox, usrp_rate, demod_rate, audio_rate):
+
+        def _form_set_freq(kv):
+            return self.set_freq(kv['freq'])
+
+
+        if 0:
+            self.src_fft = fftsink.fft_sink_c (self, self.panel, title="Data 
from USRP",
+                                               fft_size=512, 
sample_rate=usrp_rate)
+            self.connect (self.src, self.src_fft)
+            vbox.Add (self.src_fft.win, 4, wx.EXPAND)
+
+        if 0:
+            post_demod_fft = fftsink.fft_sink_f (self, self.panel, title="Post 
Demod",
+                                                  fft_size=512, 
sample_rate=demod_rate,
+                                                  y_per_div=10, ref_level=-40)
+            self.connect (self.am_demod, post_demod_fft)
+            vbox.Add (post_demod_fft.win, 4, wx.EXPAND)
+
+        if 0:
+            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()
+
+        if not (self.u is None):
+          hbox = wx.BoxSizer(wx.HORIZONTAL)
+          hbox.Add((5,0), 0)
+          myform['freq'] = form.float_field(
+            parent=self.panel, sizer=hbox, label="Freq", weight=1,
+            callback=myform.check_input_and_call(_form_set_freq, 
self._set_status_msg))
+
+          hbox.Add((5,0), 0)
+          myform['freq_slider'] = \
+              form.quantized_slider_field(parent=self.panel, sizer=hbox, 
weight=3,
+                                        range=(800.0e6, 2600.0e6, 1.0e6),
+                                        callback=self.set_freq)
+          hbox.Add((5,0), 0)
+          vbox.Add(hbox, 0, wx.EXPAND)
+
+        hbox = wx.BoxSizer(wx.HORIZONTAL)
+        hbox.Add((5,0), 0)
+
+        myform['contrast'] = \
+            form.quantized_slider_field(parent=self.panel, sizer=hbox, 
label="Contrast",
+                                        weight=3, range=(-4.0, 4.0, 0.1),
+                                        callback=self.set_contrast)
+        hbox.Add((5,0), 1)
+
+        myform['brightness'] = \
+            form.quantized_slider_field(parent=self.panel, sizer=hbox, 
label="Brightness",
+                                        weight=3, range=(-255.0, 255.0, 1.0),
+                                        callback=self.set_brightness)
+        hbox.Add((5,0), 0)
+
+        if not (self.u is None):
+          myform['gain'] = \
+              form.quantized_slider_field(parent=self.panel, sizer=hbox, 
label="Gain",
+                                        weight=3, 
range=self.subdev.gain_range(),
+                                        callback=self.set_gain)
+          hbox.Add((5,0), 0)
+        vbox.Add(hbox, 0, wx.EXPAND)
+
+        try:
+            self.knob = powermate.powermate(self.frame)
+            self.rot = 0
+            powermate.EVT_POWERMATE_ROTATE (self.frame, self.on_rotate)
+            powermate.EVT_POWERMATE_BUTTON (self.frame, self.on_button)
+        except:
+            print "FYI: No Powermate or Contour Knob found"
+
+
+    def on_rotate (self, event):
+        self.rot += event.delta
+        if (self.state == "FREQ"):
+            if self.rot >= 3:
+                self.set_freq(self.freq + .1e6)
+                self.rot -= 3
+            elif self.rot <=-3:
+                self.set_freq(self.freq - .1e6)
+                self.rot += 3
+        elif (self.state == "CONTRAST"):
+            step = 0.1
+            if self.rot >= 3:
+                self.set_contrast(self.contrast + step)
+                self.rot -= 3
+            elif self.rot <=-3:
+                self.set_contrast(self.contrast - step)
+                self.rot += 3
+        else:
+            step = 1
+            if self.rot >= 3:
+                self.set_brightness(self.brightness + step)
+                self.rot -= 3
+            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
+        self.rot = 0
+        if self.state == "FREQ":
+            self.state = "CONTRAST"
+        elif self.state == "CONTRAST":
+            self.state = "BRIGHTNESS"
+        else:
+            self.state = "FREQ"
+        self.update_status_bar ()
+        
+
+    def set_contrast (self, contrast):
+        self.contrast = contrast
+        self.invert_and_scale.set_k(self.contrast)
+        self.myform['contrast'].set_value(self.contrast)
+        self.update_status_bar ()
+
+    def set_brightness (self, brightness):
+        self.brightness = brightness
+        self.set_blacklevel.set_k(self.brightness +127.0) #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.
+
+        @param target_freq: frequency in Hz
+        @rypte: bool
+
+        Tuning is a two step process.  First we ask the front-end to
+        tune as close to the desired frequency as it can.  Then we use
+        the result of that operation and our target_frequency to
+        determine the value for the digital down converter.
+        """
+        if not (self.u is None):
+          r = usrp.tune(self.u, 0, self.subdev, target_freq)
+          print target_freq
+          print r
+          print self.freq
+          if r:
+              self.freq = target_freq
+              self.myform['freq'].set_value(target_freq)         # update 
displayed value
+              self.myform['freq_slider'].set_value(target_freq)  # update 
displayed value
+              self.update_status_bar()
+              self._set_status_msg("OK", 0)
+              return True
+
+        self._set_status_msg("Failed", 0)
+        return False
+
+    def set_gain(self, gain):
+        if not (self.u is None):
+          self.gain=gain
+          self.myform['gain'].set_value(gain)     # update displayed value
+          self.subdev.set_gain(gain)
+          if not (self.pga is None):
+            print 'old pga', self.u.pga(0)
+           self.u.set_pga(0,self.pga) #self.u.pga_max()
+            print 'overridden pga', self.u.pga(0)
+          self.update_status_bar()
+
+    def update_status_bar (self):
+        msg = "Setting:%s Freq:%d Mhz Contrast:%r Brightness:%r Gain: %r" % 
(self.state,int(self.freq/1e6), self.contrast,self.brightness,self.gain)
+        self._set_status_msg(msg, 1)
+        #self.src_fft.set_baseband_freq(self.freq)
+
+        
+
+if __name__ == '__main__':
+    app = stdgui.stdapp (tv_rx_graph, "USRP TV RX black-and-white")
+    app.MainLoop ()


Property changes on: 
gnuradio/branches/developers/nldudok1/general-wip/gnuradio-examples/python/usrp/usrp_fmtv_rcv.py
___________________________________________________________________
Name: svn:executable
   + *