#!/usr/bin/env python2
# -*- coding: utf-8 -*-
##################################################
# GNU Radio Python Flow Graph
# Title: Fft
# Generated: Wed Mar 16 05:10:05 2016
##################################################

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 baz import baudline
from gnuradio import blocks
from gnuradio import eng_notation
from gnuradio import fft
from gnuradio import gr
from gnuradio import uhd
from gnuradio.eng_option import eng_option
from gnuradio.fft import window
from gnuradio.filter import firdes
from optparse import OptionParser
import ettus
import sys
import time


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

    def __init__(self):
        gr.top_block.__init__(self, "Fft")
        Qt.QWidget.__init__(self)
        self.setWindowTitle("Fft")
        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", "FFT")
        self.restoreGeometry(self.settings.value("geometry").toByteArray())

        ##################################################
        # Variables
        ##################################################
        self.device3 = variable_uhd_device3_0 = ettus.device3(uhd.device_addr_t( ",".join(("type=x300", "")) ))
        self.samp_rate = samp_rate = 50000000
        self.center_freq = center_freq = 2.1e9
        self.FFT_SZ = FFT_SZ = 1024

        ##################################################
        # Blocks
        ##################################################
        self.uhd_usrp_source_0 = uhd.usrp_source(
        	",".join(("", "")),
        	uhd.stream_args(
        		cpu_format="fc32",
        		channels=range(1),
        	),
        )
        self.uhd_usrp_source_0.set_clock_source("gpsdo", 0)
        self.uhd_usrp_source_0.set_samp_rate(samp_rate)
        self.uhd_usrp_source_0.set_center_freq(center_freq, 0)
        self.uhd_usrp_source_0.set_gain(0, 0)
        self.fft_vxx_0 = fft.fft_vcc(FFT_SZ, True, (window.blackmanharris(FFT_SZ)), True, 1)
        self.blocks_vector_to_stream_0 = blocks.vector_to_stream(gr.sizeof_gr_complex*1, FFT_SZ)
        self.blocks_stream_to_vector_0 = blocks.stream_to_vector(gr.sizeof_gr_complex*1, FFT_SZ)
        self.baudline_sink_0 = baudline.baudline_sink(
        		fmt='le32f',
        		item_size=8,
        		is_complex=True,
        		channels=2,
        		sample_rate=samp_rate,
        		aggregate_channel_count=1,
        		baseband_freq=0,
        		decimation=1,
        		scale=1.0,
        		overlap=0,
        		slide_size=0,
        		fft_size=0,
        		x_slip=0,
        		jump_step=0,
        		mode='pipe',
        		buffered=True,
        		kill_on_del=True,
        		memory=0,
        		peak_hold=False,
        		**{})

        ##################################################
        # Connections
        ##################################################
        self.connect((self.blocks_stream_to_vector_0, 0), (self.fft_vxx_0, 0))    
        self.connect((self.blocks_vector_to_stream_0, 0), (self.baudline_sink_0, 0))    
        self.connect((self.fft_vxx_0, 0), (self.blocks_vector_to_stream_0, 0))    
        self.connect((self.uhd_usrp_source_0, 0), (self.blocks_stream_to_vector_0, 0))    

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


    def get_variable_uhd_device3_0(self):
        return self.variable_uhd_device3_0

    def set_variable_uhd_device3_0(self, variable_uhd_device3_0):
        self.variable_uhd_device3_0 = variable_uhd_device3_0

    def get_samp_rate(self):
        return self.samp_rate

    def set_samp_rate(self, samp_rate):
        self.samp_rate = samp_rate
        self.uhd_usrp_source_0.set_samp_rate(self.samp_rate)

    def get_center_freq(self):
        return self.center_freq

    def set_center_freq(self, center_freq):
        self.center_freq = center_freq
        self.uhd_usrp_source_0.set_center_freq(self.center_freq, 0)

    def get_FFT_SZ(self):
        return self.FFT_SZ

    def set_FFT_SZ(self, FFT_SZ):
        self.FFT_SZ = FFT_SZ


def main(top_block_cls=FFT, 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()