#!/usr/bin/env python2
  # -*- coding: utf-8 -*-
  ##################################################
  # GNU Radio Python Flow Graph

  # Title: Fm Radio Comp Decim Lpf

  # Generated: Sat Mar 18 11:55:19 2017

  ##################################################
  
  if __name__ == '__main__':

  	import ctypes
  	import sys
  	if sys.platform.startswith('linux'):
  		try:
  			x11 = ctypes.cdll.LoadLibrary('libX11.so')
  			x11.XInitThreads()
  		except:
  			print "Warning: failed to XInitThreads()"

  
  from PyQt4 import Qt
  from gnuradio import analog

  from gnuradio import audio

  from gnuradio import eng_notation
  from gnuradio import filter
  from gnuradio import gr
  from gnuradio import qtgui
  from gnuradio.eng_option import eng_option
  from gnuradio.filter import firdes
  from gnuradio.qtgui import Range, RangeWidget
  from optparse import OptionParser
  import osmosdr
  import sip
  import sys
  import time

  class fm_radio_comp_decim_lpf(gr.top_block, Qt.QWidget):

  	def __init__(self):
  		gr.top_block.__init__(self, "Fm Radio Comp Decim Lpf")
  		Qt.QWidget.__init__(self)
  		self.setWindowTitle("Fm Radio Comp Decim Lpf")
  		try:
  			self.setWindowIcon(Qt.QIcon.fromTheme('gnuradio-grc'))
  		except:
  			pass
  		self.top_scroll_layout = Qt.QVBoxLayout()
  		self.setLayout(self.top_scroll_layout)
  		self.top_scroll = Qt.QScrollArea()
  		self.top_scroll.setFrameStyle(Qt.QFrame.NoFrame)
  		self.top_scroll_layout.addWidget(self.top_scroll)
  		self.top_scroll.setWidgetResizable(True)
  		self.top_widget = Qt.QWidget()
  		self.top_scroll.setWidget(self.top_widget)
  		self.top_layout = Qt.QVBoxLayout(self.top_widget)
  		self.top_grid_layout = Qt.QGridLayout()
  		self.top_layout.addLayout(self.top_grid_layout)

  		self.settings = Qt.QSettings("GNU Radio", "fm_radio_comp_decim_lpf")
  		self.restoreGeometry(self.settings.value("geometry").toByteArray())

  		##################################################
  		# Variables
  		##################################################
  		self.samp_rate = samp_rate = 48e3
  		self.freq = freq = 91e6

  		##################################################
  		# Blocks
  		##################################################
  		self._freq_range = Range(1e6, 2e9, 1e5, 91e6, 200)
  		self._freq_win = RangeWidget(self._freq_range, self.set_freq, "freq", "counter_slider", float)
  		self.top_grid_layout.addWidget(self._freq_win, 0,0)
  		self.rtlsdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + '' )
  		self.rtlsdr_source_0.set_sample_rate(samp_rate*10*4)
  		self.rtlsdr_source_0.set_center_freq(freq, 0)
  		self.rtlsdr_source_0.set_freq_corr(0, 0)
  		self.rtlsdr_source_0.set_dc_offset_mode(0, 0)
  		self.rtlsdr_source_0.set_iq_balance_mode(0, 0)
  		self.rtlsdr_source_0.set_gain_mode(False, 0)
  		self.rtlsdr_source_0.set_gain(30, 0)
  		self.rtlsdr_source_0.set_if_gain(30, 0)
  		self.rtlsdr_source_0.set_bb_gain(30, 0)
  		self.rtlsdr_source_0.set_antenna('', 0)
  		self.rtlsdr_source_0.set_bandwidth(0, 0)
  		  
  		self.rational_resampler_xxx_0_0 = filter.rational_resampler_ccc(
  				interpolation=1,
  				decimation=4,
  				taps=(1, ),
  				fractional_bw=None,
  		)
  		self.rational_resampler_xxx_0 = filter.rational_resampler_fff(
  				interpolation=1,
  				decimation=10,
  				taps=(1, ),
  				fractional_bw=None,
  		)
  		self.qtgui_freq_sink_x_0_0 = qtgui.freq_sink_f(
  			1024, #size
  			firdes.WIN_BLACKMAN_hARRIS, #wintype
  			0, #fc
  			samp_rate*10, #bw
  			"", #name
  			2 #number of inputs
  		)
  		self.qtgui_freq_sink_x_0_0.set_update_time(0.10)
  		self.qtgui_freq_sink_x_0_0.set_y_axis(-140, 10)
  		self.qtgui_freq_sink_x_0_0.set_y_label('Relative Gain', 'dB')
  		self.qtgui_freq_sink_x_0_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, 0.0, 0, "")
  		self.qtgui_freq_sink_x_0_0.enable_autoscale(False)
  		self.qtgui_freq_sink_x_0_0.enable_grid(True)
  		self.qtgui_freq_sink_x_0_0.set_fft_average(0.05)
  		self.qtgui_freq_sink_x_0_0.enable_axis_labels(True)
  		self.qtgui_freq_sink_x_0_0.enable_control_panel(False)
  		
  		if not True:
  		  self.qtgui_freq_sink_x_0_0.disable_legend()
  		
  		if "float" == "float" or "float" == "msg_float":
  		  self.qtgui_freq_sink_x_0_0.set_plot_pos_half(not True)
  		
  		labels = ['', '', '', '', '',
  				  '', '', '', '', '']
  		widths = [1, 1, 1, 1, 1,
  				  1, 1, 1, 1, 1]
  		colors = ["blue", "red", "green", "black", "cyan",
  				  "magenta", "yellow", "dark red", "dark green", "dark blue"]
  		alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
  				  1.0, 1.0, 1.0, 1.0, 1.0]
  		for i in xrange(2):
  			if len(labels[i]) == 0:
  				self.qtgui_freq_sink_x_0_0.set_line_label(i, "Data {0}".format(i))
  			else:
  				self.qtgui_freq_sink_x_0_0.set_line_label(i, labels[i])
  			self.qtgui_freq_sink_x_0_0.set_line_width(i, widths[i])
  			self.qtgui_freq_sink_x_0_0.set_line_color(i, colors[i])
  			self.qtgui_freq_sink_x_0_0.set_line_alpha(i, alphas[i])
  		
  		self._qtgui_freq_sink_x_0_0_win = sip.wrapinstance(self.qtgui_freq_sink_x_0_0.pyqwidget(), Qt.QWidget)
  		self.top_grid_layout.addWidget(self._qtgui_freq_sink_x_0_0_win, 12,0)
  		self.qtgui_freq_sink_x_0 = qtgui.freq_sink_f(
  			1024, #size
  			firdes.WIN_BLACKMAN_hARRIS, #wintype
  			0, #fc
  			samp_rate, #bw
  			"", #name
  			2 #number of inputs
  		)
  		self.qtgui_freq_sink_x_0.set_update_time(0.10)
  		self.qtgui_freq_sink_x_0.set_y_axis(-140, 10)
  		self.qtgui_freq_sink_x_0.set_y_label('Relative Gain', 'dB')
  		self.qtgui_freq_sink_x_0.set_trigger_mode(qtgui.TRIG_MODE_FREE, 0.0, 0, "")
  		self.qtgui_freq_sink_x_0.enable_autoscale(False)
  		self.qtgui_freq_sink_x_0.enable_grid(True)
  		self.qtgui_freq_sink_x_0.set_fft_average(1.0)
  		self.qtgui_freq_sink_x_0.enable_axis_labels(True)
  		self.qtgui_freq_sink_x_0.enable_control_panel(False)
  		
  		if not True:
  		  self.qtgui_freq_sink_x_0.disable_legend()
  		
  		if "float" == "float" or "float" == "msg_float":
  		  self.qtgui_freq_sink_x_0.set_plot_pos_half(not True)
  		
  		labels = ['', '', '', '', '',
  				  '', '', '', '', '']
  		widths = [1, 1, 1, 1, 1,
  				  1, 1, 1, 1, 1]
  		colors = ["blue", "red", "green", "black", "cyan",
  				  "magenta", "yellow", "dark red", "dark green", "dark blue"]
  		alphas = [1.0, 1.0, 1.0, 1.0, 1.0,
  				  1.0, 1.0, 1.0, 1.0, 1.0]
  		for i in xrange(2):
  			if len(labels[i]) == 0:
  				self.qtgui_freq_sink_x_0.set_line_label(i, "Data {0}".format(i))
  			else:
  				self.qtgui_freq_sink_x_0.set_line_label(i, labels[i])
  			self.qtgui_freq_sink_x_0.set_line_width(i, widths[i])
  			self.qtgui_freq_sink_x_0.set_line_color(i, colors[i])
  			self.qtgui_freq_sink_x_0.set_line_alpha(i, alphas[i])
  		
  		self._qtgui_freq_sink_x_0_win = sip.wrapinstance(self.qtgui_freq_sink_x_0.pyqwidget(), Qt.QWidget)
  		self.top_grid_layout.addWidget(self._qtgui_freq_sink_x_0_win, 13,0)
  		self.low_pass_filter_0_0 = filter.fir_filter_fff(10, firdes.low_pass(
  			1, samp_rate*10, samp_rate, 1e3, firdes.WIN_HAMMING, 6.76))
  		self.low_pass_filter_0 = filter.fir_filter_ccf(4, firdes.low_pass(
  			1, samp_rate*10*4, samp_rate*10/4, 1e3, firdes.WIN_HAMMING, 6.76))
  		self.audio_sink_0 = audio.sink(int(samp_rate), '', True)
  		self.analog_wfm_rcv_0_0 = analog.wfm_rcv(
  			quad_rate=samp_rate*10,
  			audio_decimation=1,
  		)
  		self.analog_wfm_rcv_0 = analog.wfm_rcv(
  			quad_rate=samp_rate*10,
  			audio_decimation=1,
  		)

  		##################################################
  		# Connections
  		##################################################
  		self.connect((self.analog_wfm_rcv_0, 0), (self.qtgui_freq_sink_x_0_0, 0))	
  		self.connect((self.analog_wfm_rcv_0, 0), (self.rational_resampler_xxx_0, 0))	
  		self.connect((self.analog_wfm_rcv_0_0, 0), (self.low_pass_filter_0_0, 0))	
  		self.connect((self.analog_wfm_rcv_0_0, 0), (self.qtgui_freq_sink_x_0_0, 1))	
  		self.connect((self.low_pass_filter_0, 0), (self.analog_wfm_rcv_0_0, 0))	
  		self.connect((self.low_pass_filter_0_0, 0), (self.audio_sink_0, 0))	
  		self.connect((self.low_pass_filter_0_0, 0), (self.qtgui_freq_sink_x_0, 1))	
  		self.connect((self.rational_resampler_xxx_0, 0), (self.qtgui_freq_sink_x_0, 0))	
  		self.connect((self.rational_resampler_xxx_0_0, 0), (self.analog_wfm_rcv_0, 0))	
  		self.connect((self.rtlsdr_source_0, 0), (self.low_pass_filter_0, 0))	
  		self.connect((self.rtlsdr_source_0, 0), (self.rational_resampler_xxx_0_0, 0))	

  	def closeEvent(self, event):
  		self.settings = Qt.QSettings("GNU Radio", "fm_radio_comp_decim_lpf")
  		self.settings.setValue("geometry", self.saveGeometry())
  		event.accept()

  	def get_samp_rate(self):
  		return self.samp_rate

  	def set_samp_rate(self, samp_rate):
  		self.samp_rate = samp_rate
  		self.rtlsdr_source_0.set_sample_rate(self.samp_rate*10*4)
  		self.qtgui_freq_sink_x_0_0.set_frequency_range(0, self.samp_rate*10)
  		self.qtgui_freq_sink_x_0.set_frequency_range(0, self.samp_rate)
  		self.low_pass_filter_0_0.set_taps(firdes.low_pass(1, self.samp_rate*10, self.samp_rate, 1e3, firdes.WIN_HAMMING, 6.76))
  		self.low_pass_filter_0.set_taps(firdes.low_pass(1, self.samp_rate*10*4, self.samp_rate*10/4, 1e3, firdes.WIN_HAMMING, 6.76))

  	def get_freq(self):
  		return self.freq

  	def set_freq(self, freq):
  		self.freq = freq
  		self.rtlsdr_source_0.set_center_freq(self.freq, 0)

  def main(top_block_cls=fm_radio_comp_decim_lpf, options=None):

  	from distutils.version import StrictVersion
  	if StrictVersion(Qt.qVersion()) >= StrictVersion("4.5.0"):
  		style = gr.prefs().get_string('qtgui', 'style', 'raster')
  		Qt.QApplication.setGraphicsSystem(style)
  	qapp = Qt.QApplication(sys.argv)

  	tb = top_block_cls()
  	tb.start()
  	tb.show()

  	def quitting():
  		tb.stop()
  		tb.wait()
  	qapp.connect(qapp, Qt.SIGNAL("aboutToQuit()"), quitting)
  	qapp.exec_()

  
  
  if __name__ == '__main__':

  	main()