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

  # Title: Fm Radio

  # Generated: Fri Apr 28 17:17:51 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(gr.top_block, Qt.QWidget):

  	def __init__(self):
  		gr.top_block.__init__(self, "Fm Radio")
  		Qt.QWidget.__init__(self)
  		self.setWindowTitle("Fm Radio")
  		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")
  		self.restoreGeometry(self.settings.value("geometry").toByteArray())
  
  		##################################################
  		# Variables
  		##################################################
  		self.samp_rate = samp_rate = 48e3
  		self.freq = freq = 218013000
  
  		##################################################
  		# Blocks
  		##################################################
  		self._freq_range = Range(52e6, 2e9, 1e3, 218013000, 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*8*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(20, 0)
  		self.rtlsdr_source_0.set_if_gain(20, 0)
  		self.rtlsdr_source_0.set_bb_gain(20, 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=8,
  				taps=None,
  				fractional_bw=None,
  		)
  		self.rational_resampler_xxx_0 = filter.rational_resampler_fff(
  				interpolation=1,
  				decimation=4,
  				taps=None,
  				fractional_bw=None,
  		)
  		self.qtgui_sink_x_1 = qtgui.sink_f(
  			1024, #fftsize
  			firdes.WIN_BLACKMAN_hARRIS, #wintype
  			0, #fc
  			samp_rate*8, #bw
  			"", #name
  			True, #plotfreq
  			True, #plotwaterfall
  			True, #plottime
  			True, #plotconst
  		)
  		self.qtgui_sink_x_1.set_update_time(1.0/10)
  		self._qtgui_sink_x_1_win = sip.wrapinstance(self.qtgui_sink_x_1.pyqwidget(), Qt.QWidget)
  		self.top_grid_layout.addWidget(self._qtgui_sink_x_1_win, 10,0)
  		
  		self.qtgui_sink_x_1.enable_rf_freq(False)
  		
  		
  		  
  		self.qtgui_sink_x_0 = qtgui.sink_c(
  			1024, #fftsize
  			firdes.WIN_BLACKMAN_hARRIS, #wintype
  			0, #fc
  			samp_rate*8*4, #bw
  			"", #name
  			True, #plotfreq
  			True, #plotwaterfall
  			True, #plottime
  			True, #plotconst
  		)
  		self.qtgui_sink_x_0.set_update_time(1.0/10)
  		self._qtgui_sink_x_0_win = sip.wrapinstance(self.qtgui_sink_x_0.pyqwidget(), Qt.QWidget)
  		self.top_grid_layout.addWidget(self._qtgui_sink_x_0_win, 9,0)
  		
  		self.qtgui_sink_x_0.enable_rf_freq(False)
  		
  		
  		  
  		self.audio_sink_0 = audio.sink(int(samp_rate), '', True)
  		self.analog_wfm_rcv_0 = analog.wfm_rcv(
  			quad_rate=samp_rate*8,
  			audio_decimation=1,
  		)
  
  		##################################################
  		# Connections
  		##################################################
  		self.connect((self.analog_wfm_rcv_0, 0), (self.qtgui_sink_x_1, 0))	
  		self.connect((self.analog_wfm_rcv_0, 0), (self.rational_resampler_xxx_0, 0))	
  		self.connect((self.rational_resampler_xxx_0, 0), (self.audio_sink_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.qtgui_sink_x_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")
  		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*8*4)
  		self.qtgui_sink_x_1.set_frequency_range(0, self.samp_rate*8)
  		self.qtgui_sink_x_0.set_frequency_range(0, self.samp_rate*8*4)
  
  	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, 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()