#!/usr/bin/env python
##################################################
# Gnuradio Python Flow Graph
# Title: Top Block
# Author: 2h20
# Generated: Sat Dec  7 02:34:47 2013
##################################################

from gnuradio import eng_notation
from gnuradio import filter
from gnuradio import gr
from gnuradio import wxgui
from gnuradio.eng_option import eng_option
from gnuradio.fft import window
from gnuradio.filter import firdes
from gnuradio.wxgui import fftsink2
from gnuradio.wxgui import forms
from grc_gnuradio import wxgui as grc_wxgui
from optparse import OptionParser
import osmosdr
import wx

class top_block(grc_wxgui.top_block_gui):

    def __init__(self):
        grc_wxgui.top_block_gui.__init__(self, title="Top Block")
        _icon_path = "/usr/share/icons/hicolor/32x32/apps/gnuradio-grc.png"
        self.SetIcon(wx.Icon(_icon_path, wx.BITMAP_TYPE_ANY))

        ##################################################
        # Variables
        ##################################################
        self.samp_rate = samp_rate = 2800000
        self.frequency = frequency = 88.71e6
        self.aud_sink = aud_sink = "pulse"

        ##################################################
        # Blocks
        ##################################################
        self.wxgui_fftsink2_0_0 = fftsink2.fft_sink_c(
        	self.GetWin(),
        	baseband_freq=0,
        	y_per_div=10,
        	y_divs=10,
        	ref_level=0,
        	ref_scale=2.0,
        	sample_rate=samp_rate,
        	fft_size=1024,
        	fft_rate=10,
        	average=True,
        	avg_alpha=None,
        	title="Not Filtered",
        	peak_hold=False,
        )
        self.Add(self.wxgui_fftsink2_0_0.win)
        self.wxgui_fftsink2_0 = fftsink2.fft_sink_c(
        	self.GetWin(),
        	baseband_freq=0,
        	y_per_div=10,
        	y_divs=10,
        	ref_level=0,
        	ref_scale=2.0,
        	sample_rate=352800,
        	fft_size=512,
        	fft_rate=15,
        	average=False,
        	avg_alpha=None,
        	title="Filtered",
        	peak_hold=False,
        )
        self.Add(self.wxgui_fftsink2_0.win)
        self.rtlsdr_source_0 = osmosdr.source( args="numchan=" + str(1) + " " + "" )
        self.rtlsdr_source_0.set_sample_rate(samp_rate)
        self.rtlsdr_source_0.set_center_freq(100e6, 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(0, 0)
        self.rtlsdr_source_0.set_gain(10, 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.low_pass_filter_0 = filter.fir_filter_ccf(8, firdes.low_pass(
        	2, samp_rate, 25000, 50000, firdes.WIN_HAMMING, 6.76))
        _frequency_sizer = wx.BoxSizer(wx.VERTICAL)
        self._frequency_text_box = forms.text_box(
        	parent=self.GetWin(),
        	sizer=_frequency_sizer,
        	value=self.frequency,
        	callback=self.set_frequency,
        	label='frequency',
        	converter=forms.float_converter(),
        	proportion=0,
        )
        self._frequency_slider = forms.slider(
        	parent=self.GetWin(),
        	sizer=_frequency_sizer,
        	value=self.frequency,
        	callback=self.set_frequency,
        	minimum=60e6,
        	maximum=1.8e9,
        	num_steps=1000,
        	style=wx.SL_HORIZONTAL,
        	cast=float,
        	proportion=1,
        )
        self.Add(_frequency_sizer)

        ##################################################
        # Connections
        ##################################################
        self.connect((self.low_pass_filter_0, 0), (self.wxgui_fftsink2_0, 0))
        self.connect((self.rtlsdr_source_0, 0), (self.low_pass_filter_0, 0))
        self.connect((self.rtlsdr_source_0, 0), (self.wxgui_fftsink2_0_0, 0))


# QT sink close method reimplementation

    def get_samp_rate(self):
        return self.samp_rate

    def set_samp_rate(self, samp_rate):
        self.samp_rate = samp_rate
        self.low_pass_filter_0.set_taps(firdes.low_pass(2, self.samp_rate, 25000, 50000, firdes.WIN_HAMMING, 6.76))
        self.wxgui_fftsink2_0_0.set_sample_rate(self.samp_rate)
        self.rtlsdr_source_0.set_sample_rate(self.samp_rate)

    def get_frequency(self):
        return self.frequency

    def set_frequency(self, frequency):
        self.frequency = frequency
        self._frequency_slider.set_value(self.frequency)
        self._frequency_text_box.set_value(self.frequency)

    def get_aud_sink(self):
        return self.aud_sink

    def set_aud_sink(self, aud_sink):
        self.aud_sink = aud_sink

if __name__ == '__main__':
    import ctypes
    import os
    if os.name == 'posix':
        try:
            x11 = ctypes.cdll.LoadLibrary('libX11.so')
            x11.XInitThreads()
        except:
            print "Warning: failed to XInitThreads()"
    parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
    (options, args) = parser.parse_args()
    tb = top_block()
    tb.Start(True)
    tb.Wait()

