Initial commit

.gitignore

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+# Backup files
+*~
+
+# Compiled Python files
+*.py[cod]

LICENSE

@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

PKGBUILD

@@ -0,0 +1,22 @@
+# Maintainer: Michal Krenek (Mikos) <m.krenek@gmail.com>
+pkgname=qspectrumanalyzer
+pkgver=1.0
+pkgrel=1
+pkgdesc="Spectrum analyzer for RTL-SDR (GUI for rtl_power based on PyQtGraph)"
+arch=('any')
+url="https://github.com/xmikos/qspectrumanalyzer"
+license=('GPL3')
+depends=('python-pyqt4')
+source=(https://github.com/xmikos/qspectrumanalyzer/archive/v$pkgver.tar.gz)
+
+build() {
+  cd "$srcdir/$pkgname-$pkgver"
+  python setup.py build
+}
+
+package() {
+  cd "$srcdir/$pkgname-$pkgver"
+  python setup.py install --root="$pkgdir"
+}
+
+# vim:set ts=2 sw=2 et:

README.md

@@ -0,0 +1,21 @@
+QSpectrumAnalyzer
+=================
+
+Spectrum analyzer for RTL-SDR (GUI for rtl_power based on PyQtGraph)
+
+Requirements
+------------
+
+- Python >= 2.5
+- PyQt >= 4.5
+- PyQtGraph (http://www.pyqtgraph.org)
+- rtl-sdr (https://github.com/keenerd/rtl-sdr)
+
+You should use Keenerds fork of rtl-sdr (latest Git revision),
+bacause `rtl_power` in original rtl-sdr (from osmocom.org) is broken
+(especially when used with cropping).
+
+Usage
+-----
+
+Start QSpectrumAnalyzer by running `qspectrumanalyzer`.

qspectrumanalyzer.desktop

@@ -0,0 +1,12 @@
+[Desktop Entry]
+Encoding=UTF-8
+Version=1.0
+Name=QSpectrumAnalyzer
+GenericName=Spectrum analyzer
+Comment=Spectrum analyzer for RTL-SDR (GUI for rtl_power based on PyQtGraph)
+Exec=qspectrumanalyzer
+Icon=qspectrumanalyzer
+StartupNotify=true
+Terminal=false
+Type=Application
+Categories=Qt;Science;DataVisualization;Electricity;HamRadio;

qspectrumanalyzer.svg

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qspectrumanalyzer/languages/qspectrumanalyzer_cs.qm

@@ -0,0 +1 @@
+<ｸdﾊ<>箆!ｿ`｡ｽﾝ

qspectrumanalyzer/languages/qspectrumanalyzer_cs.ts

@@ -0,0 +1,164 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS><TS version="2.0">
+<context>
+    <name>QSpectrumAnalyzerMainWindow</name>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="219"/>
+        <source>QSpectrumAnalyzer</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="233"/>
+        <source>Settings</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="230"/>
+        <source> MHz</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="232"/>
+        <source> kHz</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="236"/>
+        <source>auto</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="226"/>
+        <source>Frequency</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="222"/>
+        <source>Controls</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="239"/>
+        <source>Levels</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="qspectrumanalyzer.py" line="241"/>
+        <source>About</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="qspectrumanalyzer.py" line="241"/>
+        <source>QSpectrumAnalyzer {}</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="220"/>
+        <source>&amp;File</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="221"/>
+        <source>&amp;Help</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="223"/>
+        <source>&amp;Start</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="224"/>
+        <source>S&amp;top</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="225"/>
+        <source>Si&amp;ngle shot</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="240"/>
+        <source>&amp;Settings...</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="241"/>
+        <source>&amp;Quit</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="242"/>
+        <source>Ctrl+Q</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="243"/>
+        <source>&amp;About</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="234"/>
+        <source>Interval [s]:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="235"/>
+        <source>Gain [dB]:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="237"/>
+        <source>Corr. [ppm]:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="238"/>
+        <source>Crop [%]:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="227"/>
+        <source>Start:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="229"/>
+        <source>Stop:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer.py" line="231"/>
+        <source>Bin size:</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+<context>
+    <name>QSpectrumAnalyzerSettings</name>
+    <message>
+        <location filename="ui_qspectrumanalyzer_settings.py" line="73"/>
+        <source>QSpectrumAnalyzer - Settings</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer_settings.py" line="74"/>
+        <source>Rtl_power executable:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer_settings.py" line="75"/>
+        <source>rtl_power</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer_settings.py" line="76"/>
+        <source>...</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <location filename="ui_qspectrumanalyzer_settings.py" line="77"/>
+        <source>Waterfall history size:</source>
+        <translation type="unfinished"></translation>
+    </message>
+</context>
+</TS>

qspectrumanalyzer/qspectrumanalyzer.py

@@ -0,0 +1,382 @@
+#!/usr/bin/env python
+
+import sys, csv, subprocess
+
+import numpy as np
+import pyqtgraph as pg
+
+from PyQt4 import QtCore, QtGui
+from qspectrumanalyzer.version import __version__
+from qspectrumanalyzer.ui_qspectrumanalyzer_settings import Ui_QSpectrumAnalyzerSettings
+from qspectrumanalyzer.ui_qspectrumanalyzer import Ui_QSpectrumAnalyzerMainWindow
+
+
+# Basic settings
+pg.setConfigOptions(antialias=True)
+
+
+class QSpectrumAnalyzerSettings(QtGui.QDialog, Ui_QSpectrumAnalyzerSettings):
+    """QSpectrumAnalyzer settings dialog"""
+    def __init__(self, parent=None):
+        # Initialize UI
+        super().__init__(parent)
+        self.setupUi(self)
+
+        # Load settings
+        settings = QtCore.QSettings()
+        self.rtlPowerExecutableEdit.setText(str(settings.value("rtl_power_executable") or "rtl_power"))
+        self.waterfallHistorySizeSpinBox.setValue(int(settings.value("waterfall_history_size") or 100))
+
+    @QtCore.pyqtSlot()
+    def on_rtlPowerExecutableButton_clicked(self):
+        """Open file dialog when button is clicked"""
+        filename = QtGui.QFileDialog.getOpenFileName(self, "QSpectrumAnalyzer - rtl_power executable")
+        if filename:
+            self.rtlPowerExecutableEdit.setText(filename)
+
+    def accept(self):
+        """Save settings when dialog is accepted"""
+        settings = QtCore.QSettings()
+        settings.setValue("rtl_power_executable", self.rtlPowerExecutableEdit.text())
+        settings.setValue("waterfall_history_size", self.waterfallHistorySizeSpinBox.value())
+        QtGui.QDialog.accept(self)
+
+
+class QSpectrumAnalyzerMainWindow(QtGui.QMainWindow, Ui_QSpectrumAnalyzerMainWindow):
+    """QSpectrumAnalyzer main window"""
+    def __init__(self, parent=None):
+        # Initialize UI
+        super().__init__(parent)
+        self.setupUi(self)
+
+        # Setup rtl_power thread and connect signals
+        self.waterfall_history_size = 100
+        self.datacounter = 0
+        self.rtl_power_thread = RtlPowerThread()
+        self.rtl_power_thread.dataUpdated.connect(self.update_data)
+        self.rtl_power_thread.rtlPowerStarted.connect(self.update_buttons)
+        self.rtl_power_thread.rtlPowerStopped.connect(self.update_buttons)
+
+        # Update UI
+        self.create_plot()
+        self.create_waterfall()
+        self.update_buttons()
+        self.load_settings()
+
+    def create_plot(self):
+        """Create main spectrum plot"""
+        self.posLabel = self.mainPlotLayout.addLabel(row=0, col=0, justify="right")
+        self.mainPlotWidget = self.mainPlotLayout.addPlot(row=1, col=0)
+        self.mainPlotWidget.showGrid(x=True, y=True)
+        self.mainPlotWidget.setLabel("left", "Power", units="dBm")
+        self.mainPlotWidget.setLabel("bottom", "Frequency", units="Hz")
+        self.mainPlotWidget.setLimits(xMin=0)
+        self.mainPlotWidget.showButtons()
+
+        # Create spectrum curve
+        self.curve = self.mainPlotWidget.plot()
+
+        # Create crosshair
+        self.vLine = pg.InfiniteLine(angle=90, movable=False)
+        self.hLine = pg.InfiniteLine(angle=0, movable=False)
+        self.mainPlotWidget.addItem(self.vLine, ignoreBounds=True)
+        self.mainPlotWidget.addItem(self.hLine, ignoreBounds=True)
+        self.mouseProxy = pg.SignalProxy(self.mainPlotWidget.scene().sigMouseMoved,
+                                         rateLimit=60, slot=self.mouse_moved)
+
+    def mouse_moved(self, evt):
+        """Update crosshair when mouse is moved"""
+        pos = evt[0]
+        if self.mainPlotWidget.sceneBoundingRect().contains(pos):
+            mousePoint = self.mainPlotWidget.vb.mapSceneToView(pos)
+            self.posLabel.setText(
+                "<span style='font-size: 12pt'>f={:0.3f} MHz, P={:0.3f} dBm</span>".format(mousePoint.x() / 1e6,
+                                                                                           mousePoint.y())
+            )
+            self.vLine.setPos(mousePoint.x())
+            self.hLine.setPos(mousePoint.y())
+
+    def create_waterfall(self):
+        """Create waterfall plot"""
+        self.waterfallPlotWidget = self.waterfallPlotLayout.addPlot()
+        self.waterfallPlotLayout.addItem(self.waterfallPlotWidget)
+        self.waterfallPlotWidget.setLabel("bottom", "Frequency", units="Hz")
+        self.waterfallPlotWidget.setLabel("left", "Time")
+        self.waterfallPlotWidget.setYRange(-self.waterfall_history_size, 0)
+        self.waterfallPlotWidget.setLimits(xMin=0, yMax=0)
+        self.waterfallPlotWidget.showButtons()
+        #self.waterfallPlotWidget.setAspectLocked(True)
+        #self.waterfallPlotWidget.setDownsampling(mode="peak")
+        #self.waterfallPlotWidget.setClipToView(True)
+
+        # Link waterfall plot to main plot
+        self.mainPlotWidget.setXLink(self.waterfallPlotWidget)
+
+        # Setup histogram widget (for controlling waterfall plot levels and gradients)
+        self.waterfallHistogram = pg.HistogramLUTItem()
+        self.histogramPlotLayout.addItem(self.waterfallHistogram)
+        self.waterfallHistogram.gradient.loadPreset("flame")
+        #self.waterfallHistogram.setHistogramRange(-50, 0)
+        #self.waterfallHistogram.setLevels(-50, 0)
+
+    def update_buttons(self):
+        """Update state of control buttons"""
+        self.startButton.setEnabled(not self.rtl_power_thread.alive)
+        self.singleShotButton.setEnabled(not self.rtl_power_thread.alive)
+        self.stopButton.setEnabled(self.rtl_power_thread.alive)
+
+    def update_data(self, data):
+        """Update plots when new data is received"""
+        self.datacounter += 1
+        self.update_plot(data)
+        self.update_waterfall(data)
+
+    def update_plot(self, data):
+        """Update main spectrum plot"""
+        self.curve.setData(data["x"], data["y"])
+
+    def update_waterfall(self, data):
+        """Update waterfall plot"""
+        # Create waterfall data array and waterfall image on first run
+        if self.datacounter == 1:
+            self.waterfallImgArray = np.zeros((self.waterfall_history_size, len(data["x"])))
+            self.waterfallImg = pg.ImageItem()
+            self.waterfallImg.scale((data["x"][-1] - data["x"][0]) / len(data["x"]), 1)
+            self.waterfallPlotWidget.clear()
+            self.waterfallPlotWidget.addItem(self.waterfallImg)
+
+        # Roll down one and replace leading edge with new data
+        self.waterfallImgArray = np.roll(self.waterfallImgArray, -1, axis=0)
+        self.waterfallImgArray[-1] = data["y"]
+        self.waterfallImg.setImage(self.waterfallImgArray[-self.datacounter:].T,
+                                   autoLevels=False, autoRange=False)
+
+        # Move waterfall image to always start at 0
+        self.waterfallImg.setPos(data["x"][0],
+                                 -self.datacounter if self.datacounter < self.waterfall_history_size
+                                 else -self.waterfall_history_size)
+
+        # Link histogram widget to waterfall image on first run
+        # (must be done after first data is received or else levels would be wrong)
+        if self.datacounter == 1:
+            self.waterfallHistogram.setImageItem(self.waterfallImg)
+
+    def load_settings(self):
+        """Restore spectrum analyzer settings and window geometry"""
+        settings = QtCore.QSettings()
+        self.startFreqSpinBox.setValue(float(settings.value("start_freq") or 87.0))
+        self.stopFreqSpinBox.setValue(float(settings.value("stop_freq") or 108.0))
+        self.binSizeSpinBox.setValue(float(settings.value("bin_size") or 10.0))
+        self.intervalSpinBox.setValue(int(settings.value("interval") or 10))
+        self.gainSpinBox.setValue(int(settings.value("gain") or 0))
+        self.ppmSpinBox.setValue(int(settings.value("ppm") or 0))
+        self.cropSpinBox.setValue(int(settings.value("crop") or 0))
+
+        if settings.value("window_geometry"):
+            self.restoreGeometry(settings.value("window_geometry"))
+        if settings.value("window_state"):
+            self.restoreState(settings.value("window_state"))
+        if settings.value("plotsplitter_state"):
+            self.plotSplitter.restoreState(settings.value("plotsplitter_state"))
+
+    def save_settings(self):
+        """Save spectrum analyzer settings and window geometry"""
+        settings = QtCore.QSettings()
+        settings.setValue("start_freq", float(self.startFreqSpinBox.value()))
+        settings.setValue("stop_freq", float(self.stopFreqSpinBox.value()))
+        settings.setValue("bin_size", float(self.binSizeSpinBox.value()))
+        settings.setValue("interval", int(self.intervalSpinBox.value()))
+        settings.setValue("gain", int(self.gainSpinBox.value()))
+        settings.setValue("ppm", int(self.ppmSpinBox.value()))
+        settings.setValue("crop", int(self.cropSpinBox.value()))
+
+        settings.setValue("window_geometry", self.saveGeometry())
+        settings.setValue("window_state", self.saveState())
+        settings.setValue("plotsplitter_state", self.plotSplitter.saveState())
+
+    def show_status(self, message, timeout=2000):
+        """Show message in status bar"""
+        self.statusbar.showMessage(message, timeout)
+
+    def start(self, single_shot=False):
+        """Start rtl_power thread"""
+        settings = QtCore.QSettings()
+        self.waterfall_history_size = int(settings.value("waterfall_history_size") or 100)
+        self.datacounter = 0
+        if not self.rtl_power_thread.alive:
+            self.rtl_power_thread.setup(float(self.startFreqSpinBox.value()),
+                                        float(self.stopFreqSpinBox.value()),
+                                        float(self.binSizeSpinBox.value()),
+                                        interval=int(self.intervalSpinBox.value()),
+                                        gain=int(self.gainSpinBox.value()),
+                                        ppm=int(self.ppmSpinBox.value()),
+                                        crop=int(self.cropSpinBox.value()) / 100.0,
+                                        single_shot=single_shot)
+            self.rtl_power_thread.start()
+
+    def stop(self):
+        """Stop rtl_power thread"""
+        if self.rtl_power_thread.alive:
+            self.rtl_power_thread.stop()
+
+    @QtCore.pyqtSlot()
+    def on_startButton_clicked(self):
+        self.start()
+
+    @QtCore.pyqtSlot()
+    def on_singleShotButton_clicked(self):
+        self.start(single_shot=True)
+
+    @QtCore.pyqtSlot()
+    def on_stopButton_clicked(self):
+        self.stop()
+
+    @QtCore.pyqtSlot()
+    def on_action_Settings_triggered(self):
+        dialog = QSpectrumAnalyzerSettings(self)
+        dialog.exec_()
+
+    @QtCore.pyqtSlot()
+    def on_action_About_triggered(self):
+        QtGui.QMessageBox.information(self, self.tr("About"), self.tr("QSpectrumAnalyzer {}").format(__version__))
+
+    @QtCore.pyqtSlot()
+    def on_action_Quit_triggered(self):
+        self.close()
+
+    def closeEvent(self, event):
+        """Save settings when main window is closed"""
+        self.rtl_power_thread.stop()
+        self.save_settings()
+
+
+class RtlPowerThread(QtCore.QThread):
+    """Thread which runs rtl_power process"""
+    dataUpdated = QtCore.pyqtSignal(object)
+    rtlPowerStarted = QtCore.pyqtSignal()
+    rtlPowerStopped = QtCore.pyqtSignal()
+
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.alive = False
+        self.process = None
+        self.params = {}
+        self.databuffer = {}
+        self.last_timestamp = ""
+
+    def stop(self):
+        """Stop rtl_power thread"""
+        self.process_stop()
+        self.alive = False
+        self.wait()
+
+    def setup(self, start_freq, stop_freq, bin_size, interval=10,
+              gain=-1, ppm=0, crop=0, single_shot=False):
+        """Setup rtl_power params"""
+        self.params = {
+            "start_freq": start_freq,
+            "stop_freq": stop_freq,
+            "bin_size": bin_size,
+            "interval": interval,
+            "gain": gain,
+            "ppm": ppm,
+            "crop": crop,
+            "single_shot": single_shot
+        }
+
+    def process_stop(self):
+        """Terminate rtl_power process"""
+        if self.process:
+            try:
+                self.process.terminate()
+            except ProcessLookupError:
+                pass
+            self.process.wait()
+            self.process = None
+
+    def process_start(self):
+        """Start rtl_power process"""
+        if not self.process and self.params:
+            settings = QtCore.QSettings()
+            cmdline = [
+                str(settings.value("rtl_power_executable") or "rtl_power"),
+                "-f", "{}M:{}M:{}k".format(self.params["start_freq"],
+                                           self.params["stop_freq"],
+                                           self.params["bin_size"]),
+                "-i", "{}".format(self.params["interval"]),
+                "-p", "{}".format(self.params["ppm"]),
+                "-c", "{}".format(self.params["crop"])
+            ]
+
+            if self.params["gain"] >= 0:
+                cmdline.extend(["-g", "{}".format(self.params["gain"])])
+            if self.params["single_shot"]:
+                cmdline.append("-1")
+
+            self.process = subprocess.Popen(cmdline, stdout=subprocess.PIPE,
+                                            universal_newlines=True)
+
+    def parse_output(self, line):
+        """Parse one preprocessed line of output from rtl_power"""
+        timestamp = " ".join(line[:2])
+        start_freq = int(line[2])
+        stop_freq = int(line[3])
+        step = float(line[4])
+        samples = float(line[5])
+
+        x_axis = list(np.arange(start_freq, stop_freq, step))
+        y_axis = [float(y) for y in line[6:]]
+        if len(x_axis) != len(y_axis):
+            print("ERROR: len(x_axis) != len(y_axis), use newer version of rtl_power!")
+            if len(x_axis) > len(y_axis):
+                print("Trimming x_axis...")
+                x_axis = x_axis[:len(y_axis)]
+            else:
+                print("Trimming y_axis...")
+                y_axis = y_axis[:len(x_axis)]
+
+        if timestamp != self.last_timestamp:
+            self.last_timestamp = timestamp
+            self.databuffer = {"timestamp": timestamp,
+                               "x": x_axis,
+                               "y": y_axis}
+        else:
+            self.databuffer["x"].extend(x_axis)
+            self.databuffer["y"].extend(y_axis)
+
+        # This have to be stupid like this to be compatible with old broken version of rtl_power. Right way is:
+        # if stop_freq == self.params["stop_freq"] * 1e6:
+        if stop_freq > (self.params["stop_freq"] * 1e6) - step:
+            self.dataUpdated.emit(self.databuffer)
+            return self.databuffer
+
+    def run(self):
+        """Rtl_power thread main loop"""
+        self.process_start()
+        self.alive = True
+        self.rtlPowerStarted.emit()
+
+        reader = csv.reader(self.process.stdout, skipinitialspace=True,
+                            delimiter=",", quoting=csv.QUOTE_NONE)
+        for line in reader:
+            if not self.alive:
+                break
+            self.parse_output(line)
+
+        self.process_stop()
+        self.alive = False
+        self.rtlPowerStopped.emit()
+
+
+def main():
+    app = QtGui.QApplication(sys.argv)
+    app.setOrganizationName("QSpectrumAnalyzer")
+    app.setOrganizationDomain("qspectrumanalyzer.eutopia.cz")
+    app.setApplicationName("QSpectrumAnalyzer")
+    window = QSpectrumAnalyzerMainWindow()
+    window.show()
+    sys.exit(app.exec_())
+
+
+if __name__ == "__main__":
+    main()

qspectrumanalyzer/qspectrumanalyzer.ui

@@ -0,0 +1,386 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>QSpectrumAnalyzerMainWindow</class>
+ <widget class="QMainWindow" name="QSpectrumAnalyzerMainWindow">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>1100</width>
+    <height>680</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>QSpectrumAnalyzer</string>
+  </property>
+  <widget class="QWidget" name="centralwidget">
+   <layout class="QHBoxLayout" name="horizontalLayout">
+    <item>
+     <widget class="QSplitter" name="plotSplitter">
+      <property name="sizePolicy">
+       <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+        <horstretch>0</horstretch>
+        <verstretch>0</verstretch>
+       </sizepolicy>
+      </property>
+      <property name="orientation">
+       <enum>Qt::Vertical</enum>
+      </property>
+      <widget class="GraphicsLayoutWidget" name="mainPlotLayout">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+      </widget>
+      <widget class="GraphicsLayoutWidget" name="waterfallPlotLayout">
+       <property name="sizePolicy">
+        <sizepolicy hsizetype="Expanding" vsizetype="Expanding">
+         <horstretch>0</horstretch>
+         <verstretch>0</verstretch>
+        </sizepolicy>
+       </property>
+      </widget>
+     </widget>
+    </item>
+   </layout>
+  </widget>
+  <widget class="QMenuBar" name="menubar">
+   <property name="geometry">
+    <rect>
+     <x>0</x>
+     <y>0</y>
+     <width>1100</width>
+     <height>27</height>
+    </rect>
+   </property>
+   <widget class="QMenu" name="menu_File">
+    <property name="title">
+     <string>&amp;File</string>
+    </property>
+    <addaction name="action_Settings"/>
+    <addaction name="separator"/>
+    <addaction name="action_Quit"/>
+   </widget>
+   <widget class="QMenu" name="menu_Help">
+    <property name="title">
+     <string>&amp;Help</string>
+    </property>
+    <addaction name="action_About"/>
+   </widget>
+   <addaction name="menu_File"/>
+   <addaction name="menu_Help"/>
+  </widget>
+  <widget class="QStatusBar" name="statusbar"/>
+  <widget class="QDockWidget" name="dockWidget">
+   <property name="features">
+    <set>QDockWidget::DockWidgetFloatable|QDockWidget::DockWidgetMovable</set>
+   </property>
+   <attribute name="dockWidgetArea">
+    <number>2</number>
+   </attribute>
+   <widget class="QWidget" name="dockWidgetContents">
+    <layout class="QVBoxLayout" name="verticalLayout_3">
+     <item>
+      <widget class="QGroupBox" name="groupBox_2">
+       <property name="title">
+        <string>Controls</string>
+       </property>
+       <layout class="QGridLayout" name="gridLayout">
+        <item row="0" column="0">
+         <widget class="QPushButton" name="startButton">
+          <property name="text">
+           <string>&amp;Start</string>
+          </property>
+         </widget>
+        </item>
+        <item row="0" column="1">
+         <widget class="QPushButton" name="stopButton">
+          <property name="text">
+           <string>S&amp;top</string>
+          </property>
+         </widget>
+        </item>
+        <item row="1" column="0" colspan="2">
+         <widget class="QPushButton" name="singleShotButton">
+          <property name="text">
+           <string>Si&amp;ngle shot</string>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </widget>
+     </item>
+     <item>
+      <widget class="QGroupBox" name="groupBox">
+       <property name="title">
+        <string>Frequency</string>
+       </property>
+       <layout class="QVBoxLayout" name="verticalLayout">
+        <item>
+         <widget class="QLabel" name="label_2">
+          <property name="text">
+           <string>Start:</string>
+          </property>
+          <property name="buddy">
+           <cstring>startFreqSpinBox</cstring>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QDoubleSpinBox" name="startFreqSpinBox">
+          <property name="alignment">
+           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+          </property>
+          <property name="suffix">
+           <string> MHz</string>
+          </property>
+          <property name="decimals">
+           <number>3</number>
+          </property>
+          <property name="minimum">
+           <double>24.000000000000000</double>
+          </property>
+          <property name="maximum">
+           <double>1766.000000000000000</double>
+          </property>
+          <property name="value">
+           <double>87.000000000000000</double>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QLabel" name="label_3">
+          <property name="text">
+           <string>Stop:</string>
+          </property>
+          <property name="buddy">
+           <cstring>stopFreqSpinBox</cstring>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QDoubleSpinBox" name="stopFreqSpinBox">
+          <property name="alignment">
+           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+          </property>
+          <property name="suffix">
+           <string> MHz</string>
+          </property>
+          <property name="decimals">
+           <number>3</number>
+          </property>
+          <property name="minimum">
+           <double>24.000000000000000</double>
+          </property>
+          <property name="maximum">
+           <double>1766.000000000000000</double>
+          </property>
+          <property name="value">
+           <double>108.000000000000000</double>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QLabel" name="label">
+          <property name="text">
+           <string>Bin size:</string>
+          </property>
+          <property name="buddy">
+           <cstring>binSizeSpinBox</cstring>
+          </property>
+         </widget>
+        </item>
+        <item>
+         <widget class="QDoubleSpinBox" name="binSizeSpinBox">
+          <property name="alignment">
+           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+          </property>
+          <property name="suffix">
+           <string> kHz</string>
+          </property>
+          <property name="decimals">
+           <number>3</number>
+          </property>
+          <property name="maximum">
+           <double>2800.000000000000000</double>
+          </property>
+          <property name="value">
+           <double>10.000000000000000</double>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </widget>
+     </item>
+     <item>
+      <widget class="QGroupBox" name="groupBox_3">
+       <property name="title">
+        <string>Settings</string>
+       </property>
+       <layout class="QGridLayout" name="gridLayout_2">
+        <item row="0" column="0">
+         <widget class="QLabel" name="label_4">
+          <property name="text">
+           <string>Interval [s]:</string>
+          </property>
+          <property name="buddy">
+           <cstring>intervalSpinBox</cstring>
+          </property>
+         </widget>
+        </item>
+        <item row="0" column="1">
+         <widget class="QLabel" name="label_6">
+          <property name="text">
+           <string>Gain [dB]:</string>
+          </property>
+          <property name="buddy">
+           <cstring>gainSpinBox</cstring>
+          </property>
+         </widget>
+        </item>
+        <item row="1" column="0">
+         <widget class="QSpinBox" name="intervalSpinBox">
+          <property name="alignment">
+           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+          </property>
+          <property name="minimum">
+           <number>1</number>
+          </property>
+          <property name="maximum">
+           <number>3600</number>
+          </property>
+          <property name="value">
+           <number>10</number>
+          </property>
+         </widget>
+        </item>
+        <item row="1" column="1">
+         <widget class="QSpinBox" name="gainSpinBox">
+          <property name="alignment">
+           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+          </property>
+          <property name="specialValueText">
+           <string>auto</string>
+          </property>
+          <property name="minimum">
+           <number>-1</number>
+          </property>
+          <property name="maximum">
+           <number>49</number>
+          </property>
+          <property name="value">
+           <number>-1</number>
+          </property>
+         </widget>
+        </item>
+        <item row="2" column="0">
+         <widget class="QLabel" name="label_5">
+          <property name="text">
+           <string>Corr. [ppm]:</string>
+          </property>
+          <property name="buddy">
+           <cstring>ppmSpinBox</cstring>
+          </property>
+         </widget>
+        </item>
+        <item row="2" column="1">
+         <widget class="QLabel" name="label_7">
+          <property name="text">
+           <string>Crop [%]:</string>
+          </property>
+          <property name="buddy">
+           <cstring>cropSpinBox</cstring>
+          </property>
+         </widget>
+        </item>
+        <item row="3" column="0">
+         <widget class="QSpinBox" name="ppmSpinBox">
+          <property name="alignment">
+           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+          </property>
+          <property name="minimum">
+           <number>-999</number>
+          </property>
+          <property name="maximum">
+           <number>999</number>
+          </property>
+         </widget>
+        </item>
+        <item row="3" column="1">
+         <widget class="QSpinBox" name="cropSpinBox">
+          <property name="alignment">
+           <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </widget>
+     </item>
+     <item>
+      <widget class="QGroupBox" name="groupBox_4">
+       <property name="title">
+        <string>Levels</string>
+       </property>
+       <layout class="QVBoxLayout" name="verticalLayout_2">
+        <item>
+         <widget class="GraphicsLayoutWidget" name="histogramPlotLayout">
+          <property name="sizePolicy">
+           <sizepolicy hsizetype="Ignored" vsizetype="Expanding">
+            <horstretch>0</horstretch>
+            <verstretch>0</verstretch>
+           </sizepolicy>
+          </property>
+         </widget>
+        </item>
+       </layout>
+      </widget>
+     </item>
+    </layout>
+   </widget>
+  </widget>
+  <action name="action_Settings">
+   <property name="text">
+    <string>&amp;Settings...</string>
+   </property>
+  </action>
+  <action name="action_Quit">
+   <property name="text">
+    <string>&amp;Quit</string>
+   </property>
+   <property name="shortcut">
+    <string>Ctrl+Q</string>
+   </property>
+  </action>
+  <action name="action_About">
+   <property name="text">
+    <string>&amp;About</string>
+   </property>
+  </action>
+ </widget>
+ <customwidgets>
+  <customwidget>
+   <class>GraphicsLayoutWidget</class>
+   <extends>QGraphicsView</extends>
+   <header>pyqtgraph</header>
+  </customwidget>
+ </customwidgets>
+ <tabstops>
+  <tabstop>startButton</tabstop>
+  <tabstop>stopButton</tabstop>
+  <tabstop>singleShotButton</tabstop>
+  <tabstop>startFreqSpinBox</tabstop>
+  <tabstop>stopFreqSpinBox</tabstop>
+  <tabstop>binSizeSpinBox</tabstop>
+  <tabstop>intervalSpinBox</tabstop>
+  <tabstop>gainSpinBox</tabstop>
+  <tabstop>ppmSpinBox</tabstop>
+  <tabstop>cropSpinBox</tabstop>
+  <tabstop>histogramPlotLayout</tabstop>
+  <tabstop>mainPlotLayout</tabstop>
+  <tabstop>waterfallPlotLayout</tabstop>
+ </tabstops>
+ <resources/>
+ <connections/>
+</ui>

qspectrumanalyzer/qspectrumanalyzer_settings.ui

@@ -0,0 +1,132 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>QSpectrumAnalyzerSettings</class>
+ <widget class="QDialog" name="QSpectrumAnalyzerSettings">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>500</width>
+    <height>150</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>QSpectrumAnalyzer - Settings</string>
+  </property>
+  <layout class="QVBoxLayout" name="verticalLayout">
+   <item>
+    <layout class="QFormLayout" name="formLayout">
+     <item row="0" column="0">
+      <widget class="QLabel" name="label">
+       <property name="text">
+        <string>Rtl_power executable:</string>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="1">
+      <layout class="QHBoxLayout" name="horizontalLayout">
+       <item>
+        <widget class="QLineEdit" name="rtlPowerExecutableEdit">
+         <property name="text">
+          <string>rtl_power</string>
+         </property>
+        </widget>
+       </item>
+       <item>
+        <widget class="QToolButton" name="rtlPowerExecutableButton">
+         <property name="text">
+          <string>...</string>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </item>
+     <item row="1" column="0">
+      <widget class="QLabel" name="label_2">
+       <property name="text">
+        <string>Waterfall history size:</string>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="1">
+      <widget class="QSpinBox" name="waterfallHistorySizeSpinBox">
+       <property name="minimum">
+        <number>1</number>
+       </property>
+       <property name="maximum">
+        <number>10000000</number>
+       </property>
+       <property name="value">
+        <number>100</number>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+   <item>
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>21</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+   <item>
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="orientation">
+      <enum>Qt::Horizontal</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+    </widget>
+   </item>
+  </layout>
+ </widget>
+ <tabstops>
+  <tabstop>rtlPowerExecutableEdit</tabstop>
+  <tabstop>rtlPowerExecutableButton</tabstop>
+  <tabstop>waterfallHistorySizeSpinBox</tabstop>
+  <tabstop>buttonBox</tabstop>
+ </tabstops>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>QSpectrumAnalyzerSettings</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>224</x>
+     <y>126</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>149</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>QSpectrumAnalyzerSettings</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>292</x>
+     <y>132</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>149</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>

qspectrumanalyzer/ui_qspectrumanalyzer.py

@@ -0,0 +1,245 @@
+# -*- coding: utf-8 -*-
+
+# Form implementation generated from reading ui file 'qspectrumanalyzer/qspectrumanalyzer.ui'
+#
+# Created: Mon Mar  2 23:12:42 2015
+#      by: PyQt4 UI code generator 4.11.3
+#
+# WARNING! All changes made in this file will be lost!
+
+from PyQt4 import QtCore, QtGui
+
+try:
+    _fromUtf8 = QtCore.QString.fromUtf8
+except AttributeError:
+    def _fromUtf8(s):
+        return s
+
+try:
+    _encoding = QtGui.QApplication.UnicodeUTF8
+    def _translate(context, text, disambig):
+        return QtGui.QApplication.translate(context, text, disambig, _encoding)
+except AttributeError:
+    def _translate(context, text, disambig):
+        return QtGui.QApplication.translate(context, text, disambig)
+
+class Ui_QSpectrumAnalyzerMainWindow(object):
+    def setupUi(self, QSpectrumAnalyzerMainWindow):
+        QSpectrumAnalyzerMainWindow.setObjectName(_fromUtf8("QSpectrumAnalyzerMainWindow"))
+        QSpectrumAnalyzerMainWindow.resize(1100, 680)
+        self.centralwidget = QtGui.QWidget(QSpectrumAnalyzerMainWindow)
+        self.centralwidget.setObjectName(_fromUtf8("centralwidget"))
+        self.horizontalLayout = QtGui.QHBoxLayout(self.centralwidget)
+        self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout"))
+        self.plotSplitter = QtGui.QSplitter(self.centralwidget)
+        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding)
+        sizePolicy.setHorizontalStretch(0)
+        sizePolicy.setVerticalStretch(0)
+        sizePolicy.setHeightForWidth(self.plotSplitter.sizePolicy().hasHeightForWidth())
+        self.plotSplitter.setSizePolicy(sizePolicy)
+        self.plotSplitter.setOrientation(QtCore.Qt.Vertical)
+        self.plotSplitter.setObjectName(_fromUtf8("plotSplitter"))
+        self.mainPlotLayout = GraphicsLayoutWidget(self.plotSplitter)
+        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding)
+        sizePolicy.setHorizontalStretch(0)
+        sizePolicy.setVerticalStretch(0)
+        sizePolicy.setHeightForWidth(self.mainPlotLayout.sizePolicy().hasHeightForWidth())
+        self.mainPlotLayout.setSizePolicy(sizePolicy)
+        self.mainPlotLayout.setObjectName(_fromUtf8("mainPlotLayout"))
+        self.waterfallPlotLayout = GraphicsLayoutWidget(self.plotSplitter)
+        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Expanding)
+        sizePolicy.setHorizontalStretch(0)
+        sizePolicy.setVerticalStretch(0)
+        sizePolicy.setHeightForWidth(self.waterfallPlotLayout.sizePolicy().hasHeightForWidth())
+        self.waterfallPlotLayout.setSizePolicy(sizePolicy)
+        self.waterfallPlotLayout.setObjectName(_fromUtf8("waterfallPlotLayout"))
+        self.horizontalLayout.addWidget(self.plotSplitter)
+        QSpectrumAnalyzerMainWindow.setCentralWidget(self.centralwidget)
+        self.menubar = QtGui.QMenuBar(QSpectrumAnalyzerMainWindow)
+        self.menubar.setGeometry(QtCore.QRect(0, 0, 1100, 27))
+        self.menubar.setObjectName(_fromUtf8("menubar"))
+        self.menu_File = QtGui.QMenu(self.menubar)
+        self.menu_File.setObjectName(_fromUtf8("menu_File"))
+        self.menu_Help = QtGui.QMenu(self.menubar)
+        self.menu_Help.setObjectName(_fromUtf8("menu_Help"))
+        QSpectrumAnalyzerMainWindow.setMenuBar(self.menubar)
+        self.statusbar = QtGui.QStatusBar(QSpectrumAnalyzerMainWindow)
+        self.statusbar.setObjectName(_fromUtf8("statusbar"))
+        QSpectrumAnalyzerMainWindow.setStatusBar(self.statusbar)
+        self.dockWidget = QtGui.QDockWidget(QSpectrumAnalyzerMainWindow)
+        self.dockWidget.setFeatures(QtGui.QDockWidget.DockWidgetFloatable|QtGui.QDockWidget.DockWidgetMovable)
+        self.dockWidget.setObjectName(_fromUtf8("dockWidget"))
+        self.dockWidgetContents = QtGui.QWidget()
+        self.dockWidgetContents.setObjectName(_fromUtf8("dockWidgetContents"))
+        self.verticalLayout_3 = QtGui.QVBoxLayout(self.dockWidgetContents)
+        self.verticalLayout_3.setObjectName(_fromUtf8("verticalLayout_3"))
+        self.groupBox_2 = QtGui.QGroupBox(self.dockWidgetContents)
+        self.groupBox_2.setObjectName(_fromUtf8("groupBox_2"))
+        self.gridLayout = QtGui.QGridLayout(self.groupBox_2)
+        self.gridLayout.setObjectName(_fromUtf8("gridLayout"))
+        self.startButton = QtGui.QPushButton(self.groupBox_2)
+        self.startButton.setObjectName(_fromUtf8("startButton"))
+        self.gridLayout.addWidget(self.startButton, 0, 0, 1, 1)
+        self.stopButton = QtGui.QPushButton(self.groupBox_2)
+        self.stopButton.setObjectName(_fromUtf8("stopButton"))
+        self.gridLayout.addWidget(self.stopButton, 0, 1, 1, 1)
+        self.singleShotButton = QtGui.QPushButton(self.groupBox_2)
+        self.singleShotButton.setObjectName(_fromUtf8("singleShotButton"))
+        self.gridLayout.addWidget(self.singleShotButton, 1, 0, 1, 2)
+        self.verticalLayout_3.addWidget(self.groupBox_2)
+        self.groupBox = QtGui.QGroupBox(self.dockWidgetContents)
+        self.groupBox.setObjectName(_fromUtf8("groupBox"))
+        self.verticalLayout = QtGui.QVBoxLayout(self.groupBox)
+        self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
+        self.label_2 = QtGui.QLabel(self.groupBox)
+        self.label_2.setObjectName(_fromUtf8("label_2"))
+        self.verticalLayout.addWidget(self.label_2)
+        self.startFreqSpinBox = QtGui.QDoubleSpinBox(self.groupBox)
+        self.startFreqSpinBox.setAlignment(QtCore.Qt.AlignRight|QtCore.Qt.AlignTrailing|QtCore.Qt.AlignVCenter)
+        self.startFreqSpinBox.setDecimals(3)
+        self.startFreqSpinBox.setMinimum(24.0)
+        self.startFreqSpinBox.setMaximum(1766.0)
+        self.startFreqSpinBox.setProperty("value", 87.0)
+        self.startFreqSpinBox.setObjectName(_fromUtf8("startFreqSpinBox"))
+        self.verticalLayout.addWidget(self.startFreqSpinBox)
+        self.label_3 = QtGui.QLabel(self.groupBox)
+        self.label_3.setObjectName(_fromUtf8("label_3"))
+        self.verticalLayout.addWidget(self.label_3)
+        self.stopFreqSpinBox = QtGui.QDoubleSpinBox(self.groupBox)
+        self.stopFreqSpinBox.setAlignment(QtCore.Qt.AlignRight|QtCore.Qt.AlignTrailing|QtCore.Qt.AlignVCenter)
+        self.stopFreqSpinBox.setDecimals(3)
+        self.stopFreqSpinBox.setMinimum(24.0)
+        self.stopFreqSpinBox.setMaximum(1766.0)
+        self.stopFreqSpinBox.setProperty("value", 108.0)
+        self.stopFreqSpinBox.setObjectName(_fromUtf8("stopFreqSpinBox"))
+        self.verticalLayout.addWidget(self.stopFreqSpinBox)
+        self.label = QtGui.QLabel(self.groupBox)
+        self.label.setObjectName(_fromUtf8("label"))
+        self.verticalLayout.addWidget(self.label)
+        self.binSizeSpinBox = QtGui.QDoubleSpinBox(self.groupBox)
+        self.binSizeSpinBox.setAlignment(QtCore.Qt.AlignRight|QtCore.Qt.AlignTrailing|QtCore.Qt.AlignVCenter)
+        self.binSizeSpinBox.setDecimals(3)
+        self.binSizeSpinBox.setMaximum(2800.0)
+        self.binSizeSpinBox.setProperty("value", 10.0)
+        self.binSizeSpinBox.setObjectName(_fromUtf8("binSizeSpinBox"))
+        self.verticalLayout.addWidget(self.binSizeSpinBox)
+        self.verticalLayout_3.addWidget(self.groupBox)
+        self.groupBox_3 = QtGui.QGroupBox(self.dockWidgetContents)
+        self.groupBox_3.setObjectName(_fromUtf8("groupBox_3"))
+        self.gridLayout_2 = QtGui.QGridLayout(self.groupBox_3)
+        self.gridLayout_2.setObjectName(_fromUtf8("gridLayout_2"))
+        self.label_4 = QtGui.QLabel(self.groupBox_3)
+        self.label_4.setObjectName(_fromUtf8("label_4"))
+        self.gridLayout_2.addWidget(self.label_4, 0, 0, 1, 1)
+        self.label_6 = QtGui.QLabel(self.groupBox_3)
+        self.label_6.setObjectName(_fromUtf8("label_6"))
+        self.gridLayout_2.addWidget(self.label_6, 0, 1, 1, 1)
+        self.intervalSpinBox = QtGui.QSpinBox(self.groupBox_3)
+        self.intervalSpinBox.setAlignment(QtCore.Qt.AlignRight|QtCore.Qt.AlignTrailing|QtCore.Qt.AlignVCenter)
+        self.intervalSpinBox.setMinimum(1)
+        self.intervalSpinBox.setMaximum(3600)
+        self.intervalSpinBox.setProperty("value", 10)
+        self.intervalSpinBox.setObjectName(_fromUtf8("intervalSpinBox"))
+        self.gridLayout_2.addWidget(self.intervalSpinBox, 1, 0, 1, 1)
+        self.gainSpinBox = QtGui.QSpinBox(self.groupBox_3)
+        self.gainSpinBox.setAlignment(QtCore.Qt.AlignRight|QtCore.Qt.AlignTrailing|QtCore.Qt.AlignVCenter)
+        self.gainSpinBox.setMinimum(-1)
+        self.gainSpinBox.setMaximum(49)
+        self.gainSpinBox.setProperty("value", -1)
+        self.gainSpinBox.setObjectName(_fromUtf8("gainSpinBox"))
+        self.gridLayout_2.addWidget(self.gainSpinBox, 1, 1, 1, 1)
+        self.label_5 = QtGui.QLabel(self.groupBox_3)
+        self.label_5.setObjectName(_fromUtf8("label_5"))
+        self.gridLayout_2.addWidget(self.label_5, 2, 0, 1, 1)
+        self.label_7 = QtGui.QLabel(self.groupBox_3)
+        self.label_7.setObjectName(_fromUtf8("label_7"))
+        self.gridLayout_2.addWidget(self.label_7, 2, 1, 1, 1)
+        self.ppmSpinBox = QtGui.QSpinBox(self.groupBox_3)
+        self.ppmSpinBox.setAlignment(QtCore.Qt.AlignRight|QtCore.Qt.AlignTrailing|QtCore.Qt.AlignVCenter)
+        self.ppmSpinBox.setMinimum(-999)
+        self.ppmSpinBox.setMaximum(999)
+        self.ppmSpinBox.setObjectName(_fromUtf8("ppmSpinBox"))
+        self.gridLayout_2.addWidget(self.ppmSpinBox, 3, 0, 1, 1)
+        self.cropSpinBox = QtGui.QSpinBox(self.groupBox_3)
+        self.cropSpinBox.setAlignment(QtCore.Qt.AlignRight|QtCore.Qt.AlignTrailing|QtCore.Qt.AlignVCenter)
+        self.cropSpinBox.setObjectName(_fromUtf8("cropSpinBox"))
+        self.gridLayout_2.addWidget(self.cropSpinBox, 3, 1, 1, 1)
+        self.verticalLayout_3.addWidget(self.groupBox_3)
+        self.groupBox_4 = QtGui.QGroupBox(self.dockWidgetContents)
+        self.groupBox_4.setObjectName(_fromUtf8("groupBox_4"))
+        self.verticalLayout_2 = QtGui.QVBoxLayout(self.groupBox_4)
+        self.verticalLayout_2.setObjectName(_fromUtf8("verticalLayout_2"))
+        self.histogramPlotLayout = GraphicsLayoutWidget(self.groupBox_4)
+        sizePolicy = QtGui.QSizePolicy(QtGui.QSizePolicy.Ignored, QtGui.QSizePolicy.Expanding)
+        sizePolicy.setHorizontalStretch(0)
+        sizePolicy.setVerticalStretch(0)
+        sizePolicy.setHeightForWidth(self.histogramPlotLayout.sizePolicy().hasHeightForWidth())
+        self.histogramPlotLayout.setSizePolicy(sizePolicy)
+        self.histogramPlotLayout.setObjectName(_fromUtf8("histogramPlotLayout"))
+        self.verticalLayout_2.addWidget(self.histogramPlotLayout)
+        self.verticalLayout_3.addWidget(self.groupBox_4)
+        self.dockWidget.setWidget(self.dockWidgetContents)
+        QSpectrumAnalyzerMainWindow.addDockWidget(QtCore.Qt.DockWidgetArea(2), self.dockWidget)
+        self.action_Settings = QtGui.QAction(QSpectrumAnalyzerMainWindow)
+        self.action_Settings.setObjectName(_fromUtf8("action_Settings"))
+        self.action_Quit = QtGui.QAction(QSpectrumAnalyzerMainWindow)
+        self.action_Quit.setObjectName(_fromUtf8("action_Quit"))
+        self.action_About = QtGui.QAction(QSpectrumAnalyzerMainWindow)
+        self.action_About.setObjectName(_fromUtf8("action_About"))
+        self.menu_File.addAction(self.action_Settings)
+        self.menu_File.addSeparator()
+        self.menu_File.addAction(self.action_Quit)
+        self.menu_Help.addAction(self.action_About)
+        self.menubar.addAction(self.menu_File.menuAction())
+        self.menubar.addAction(self.menu_Help.menuAction())
+        self.label_2.setBuddy(self.startFreqSpinBox)
+        self.label_3.setBuddy(self.stopFreqSpinBox)
+        self.label.setBuddy(self.binSizeSpinBox)
+        self.label_4.setBuddy(self.intervalSpinBox)
+        self.label_6.setBuddy(self.gainSpinBox)
+        self.label_5.setBuddy(self.ppmSpinBox)
+        self.label_7.setBuddy(self.cropSpinBox)
+
+        self.retranslateUi(QSpectrumAnalyzerMainWindow)
+        QtCore.QMetaObject.connectSlotsByName(QSpectrumAnalyzerMainWindow)
+        QSpectrumAnalyzerMainWindow.setTabOrder(self.startButton, self.stopButton)
+        QSpectrumAnalyzerMainWindow.setTabOrder(self.stopButton, self.singleShotButton)
+        QSpectrumAnalyzerMainWindow.setTabOrder(self.singleShotButton, self.startFreqSpinBox)
+        QSpectrumAnalyzerMainWindow.setTabOrder(self.startFreqSpinBox, self.stopFreqSpinBox)
+        QSpectrumAnalyzerMainWindow.setTabOrder(self.stopFreqSpinBox, self.binSizeSpinBox)
+        QSpectrumAnalyzerMainWindow.setTabOrder(self.binSizeSpinBox, self.intervalSpinBox)
+        QSpectrumAnalyzerMainWindow.setTabOrder(self.intervalSpinBox, self.gainSpinBox)
+        QSpectrumAnalyzerMainWindow.setTabOrder(self.gainSpinBox, self.ppmSpinBox)
+        QSpectrumAnalyzerMainWindow.setTabOrder(self.ppmSpinBox, self.cropSpinBox)
+        QSpectrumAnalyzerMainWindow.setTabOrder(self.cropSpinBox, self.histogramPlotLayout)
+        QSpectrumAnalyzerMainWindow.setTabOrder(self.histogramPlotLayout, self.mainPlotLayout)
+        QSpectrumAnalyzerMainWindow.setTabOrder(self.mainPlotLayout, self.waterfallPlotLayout)
+
+    def retranslateUi(self, QSpectrumAnalyzerMainWindow):
+        QSpectrumAnalyzerMainWindow.setWindowTitle(_translate("QSpectrumAnalyzerMainWindow", "QSpectrumAnalyzer", None))
+        self.menu_File.setTitle(_translate("QSpectrumAnalyzerMainWindow", "&File", None))
+        self.menu_Help.setTitle(_translate("QSpectrumAnalyzerMainWindow", "&Help", None))
+        self.groupBox_2.setTitle(_translate("QSpectrumAnalyzerMainWindow", "Controls", None))
+        self.startButton.setText(_translate("QSpectrumAnalyzerMainWindow", "&Start", None))
+        self.stopButton.setText(_translate("QSpectrumAnalyzerMainWindow", "S&top", None))
+        self.singleShotButton.setText(_translate("QSpectrumAnalyzerMainWindow", "Si&ngle shot", None))
+        self.groupBox.setTitle(_translate("QSpectrumAnalyzerMainWindow", "Frequency", None))
+        self.label_2.setText(_translate("QSpectrumAnalyzerMainWindow", "Start:", None))
+        self.startFreqSpinBox.setSuffix(_translate("QSpectrumAnalyzerMainWindow", " MHz", None))
+        self.label_3.setText(_translate("QSpectrumAnalyzerMainWindow", "Stop:", None))
+        self.stopFreqSpinBox.setSuffix(_translate("QSpectrumAnalyzerMainWindow", " MHz", None))
+        self.label.setText(_translate("QSpectrumAnalyzerMainWindow", "Bin size:", None))
+        self.binSizeSpinBox.setSuffix(_translate("QSpectrumAnalyzerMainWindow", " kHz", None))
+        self.groupBox_3.setTitle(_translate("QSpectrumAnalyzerMainWindow", "Settings", None))
+        self.label_4.setText(_translate("QSpectrumAnalyzerMainWindow", "Interval [s]:", None))
+        self.label_6.setText(_translate("QSpectrumAnalyzerMainWindow", "Gain [dB]:", None))
+        self.gainSpinBox.setSpecialValueText(_translate("QSpectrumAnalyzerMainWindow", "auto", None))
+        self.label_5.setText(_translate("QSpectrumAnalyzerMainWindow", "Corr. [ppm]:", None))
+        self.label_7.setText(_translate("QSpectrumAnalyzerMainWindow", "Crop [%]:", None))
+        self.groupBox_4.setTitle(_translate("QSpectrumAnalyzerMainWindow", "Levels", None))
+        self.action_Settings.setText(_translate("QSpectrumAnalyzerMainWindow", "&Settings...", None))
+        self.action_Quit.setText(_translate("QSpectrumAnalyzerMainWindow", "&Quit", None))
+        self.action_Quit.setShortcut(_translate("QSpectrumAnalyzerMainWindow", "Ctrl+Q", None))
+        self.action_About.setText(_translate("QSpectrumAnalyzerMainWindow", "&About", None))
+
+from pyqtgraph import GraphicsLayoutWidget

qspectrumanalyzer/ui_qspectrumanalyzer_settings.py

@@ -0,0 +1,78 @@
+# -*- coding: utf-8 -*-
+
+# Form implementation generated from reading ui file 'qspectrumanalyzer/qspectrumanalyzer_settings.ui'
+#
+# Created: Mon Mar  2 23:12:42 2015
+#      by: PyQt4 UI code generator 4.11.3
+#
+# WARNING! All changes made in this file will be lost!
+
+from PyQt4 import QtCore, QtGui
+
+try:
+    _fromUtf8 = QtCore.QString.fromUtf8
+except AttributeError:
+    def _fromUtf8(s):
+        return s
+
+try:
+    _encoding = QtGui.QApplication.UnicodeUTF8
+    def _translate(context, text, disambig):
+        return QtGui.QApplication.translate(context, text, disambig, _encoding)
+except AttributeError:
+    def _translate(context, text, disambig):
+        return QtGui.QApplication.translate(context, text, disambig)
+
+class Ui_QSpectrumAnalyzerSettings(object):
+    def setupUi(self, QSpectrumAnalyzerSettings):
+        QSpectrumAnalyzerSettings.setObjectName(_fromUtf8("QSpectrumAnalyzerSettings"))
+        QSpectrumAnalyzerSettings.resize(500, 150)
+        self.verticalLayout = QtGui.QVBoxLayout(QSpectrumAnalyzerSettings)
+        self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
+        self.formLayout = QtGui.QFormLayout()
+        self.formLayout.setObjectName(_fromUtf8("formLayout"))
+        self.label = QtGui.QLabel(QSpectrumAnalyzerSettings)
+        self.label.setObjectName(_fromUtf8("label"))
+        self.formLayout.setWidget(0, QtGui.QFormLayout.LabelRole, self.label)
+        self.horizontalLayout = QtGui.QHBoxLayout()
+        self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout"))
+        self.rtlPowerExecutableEdit = QtGui.QLineEdit(QSpectrumAnalyzerSettings)
+        self.rtlPowerExecutableEdit.setObjectName(_fromUtf8("rtlPowerExecutableEdit"))
+        self.horizontalLayout.addWidget(self.rtlPowerExecutableEdit)
+        self.rtlPowerExecutableButton = QtGui.QToolButton(QSpectrumAnalyzerSettings)
+        self.rtlPowerExecutableButton.setObjectName(_fromUtf8("rtlPowerExecutableButton"))
+        self.horizontalLayout.addWidget(self.rtlPowerExecutableButton)
+        self.formLayout.setLayout(0, QtGui.QFormLayout.FieldRole, self.horizontalLayout)
+        self.label_2 = QtGui.QLabel(QSpectrumAnalyzerSettings)
+        self.label_2.setObjectName(_fromUtf8("label_2"))
+        self.formLayout.setWidget(1, QtGui.QFormLayout.LabelRole, self.label_2)
+        self.waterfallHistorySizeSpinBox = QtGui.QSpinBox(QSpectrumAnalyzerSettings)
+        self.waterfallHistorySizeSpinBox.setMinimum(1)
+        self.waterfallHistorySizeSpinBox.setMaximum(10000000)
+        self.waterfallHistorySizeSpinBox.setProperty("value", 100)
+        self.waterfallHistorySizeSpinBox.setObjectName(_fromUtf8("waterfallHistorySizeSpinBox"))
+        self.formLayout.setWidget(1, QtGui.QFormLayout.FieldRole, self.waterfallHistorySizeSpinBox)
+        self.verticalLayout.addLayout(self.formLayout)
+        spacerItem = QtGui.QSpacerItem(20, 21, QtGui.QSizePolicy.Minimum, QtGui.QSizePolicy.Expanding)
+        self.verticalLayout.addItem(spacerItem)
+        self.buttonBox = QtGui.QDialogButtonBox(QSpectrumAnalyzerSettings)
+        self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
+        self.buttonBox.setStandardButtons(QtGui.QDialogButtonBox.Cancel|QtGui.QDialogButtonBox.Ok)
+        self.buttonBox.setObjectName(_fromUtf8("buttonBox"))
+        self.verticalLayout.addWidget(self.buttonBox)
+
+        self.retranslateUi(QSpectrumAnalyzerSettings)
+        QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL(_fromUtf8("accepted()")), QSpectrumAnalyzerSettings.accept)
+        QtCore.QObject.connect(self.buttonBox, QtCore.SIGNAL(_fromUtf8("rejected()")), QSpectrumAnalyzerSettings.reject)
+        QtCore.QMetaObject.connectSlotsByName(QSpectrumAnalyzerSettings)
+        QSpectrumAnalyzerSettings.setTabOrder(self.rtlPowerExecutableEdit, self.rtlPowerExecutableButton)
+        QSpectrumAnalyzerSettings.setTabOrder(self.rtlPowerExecutableButton, self.waterfallHistorySizeSpinBox)
+        QSpectrumAnalyzerSettings.setTabOrder(self.waterfallHistorySizeSpinBox, self.buttonBox)
+
+    def retranslateUi(self, QSpectrumAnalyzerSettings):
+        QSpectrumAnalyzerSettings.setWindowTitle(_translate("QSpectrumAnalyzerSettings", "QSpectrumAnalyzer - Settings", None))
+        self.label.setText(_translate("QSpectrumAnalyzerSettings", "Rtl_power executable:", None))
+        self.rtlPowerExecutableEdit.setText(_translate("QSpectrumAnalyzerSettings", "rtl_power", None))
+        self.rtlPowerExecutableButton.setText(_translate("QSpectrumAnalyzerSettings", "...", None))
+        self.label_2.setText(_translate("QSpectrumAnalyzerSettings", "Waterfall history size:", None))
+

qspectrumanalyzer/version.py

@@ -0,0 +1 @@
+__version__ = "1.0"

scripts/qspectrumanalyzer

@@ -0,0 +1,4 @@
+#!/usr/bin/env python
+
+from qspectrumanalyzer import qspectrumanalyzer
+qspectrumanalyzer.main()

setup-qt.py

@@ -0,0 +1,27 @@
+#!/usr/bin/env python
+
+import os
+from glob import glob
+
+package = "qspectrumanalyzer"
+module = "qspectrumanalyzer"
+languages = ["cs"]
+
+print("Rebuilding PyQt resource files...")
+for f in glob("{}/*.qrc".format(package)):
+    os.system("pyrcc4 -o {}/qrc_{}.py {}".format(package, os.path.basename(f[:-4]), f))
+
+print("Rebuilding PyQt UI files...")
+for f in glob("{}/*.ui".format(package)):
+    os.system("pyuic4 -o {}/ui_{}.py {}".format(package, os.path.basename(f[:-3]), f))
+
+print("Updating translations...")
+os.system("pylupdate4 {}/*.py -ts {}".format(package,
+                                             " ".join("{}/languages/{}_{}.ts".format(package, module, lang)
+                                                      for lang in languages)))
+os.system("lrelease {}/languages/*.ts".format(package, module))
+
+print("Regenerating .pyc files...")
+for f in glob("{}/*.pyc".format(package)):
+    os.remove(f)
+__import__("{}.{}".format(package, module))

setup.py

@@ -0,0 +1,17 @@
+#!/usr/bin/env python
+
+from distutils.core import setup
+from qspectrumanalyzer.version import __version__
+
+setup(name="QSpectrumAnalyzer",
+      version=__version__,
+      description="Spectrum analyzer for RTL-SDR (GUI for rtl_power based on PyQtGraph)",
+      author="Michal Krenek (Mikos)",
+      author_email="m.krenek@gmail.com",
+      url="https://github.com/xmikos/qspectrumanalyzer",
+      license="GNU GPLv3",
+      packages=["qspectrumanalyzer"],
+      data_files=[("share/applications", ["qspectrumanalyzer.desktop"]),
+                  ("share/pixmaps", ["qspectrumanalyzer.png"])],
+      scripts=["scripts/qspectrumanalyzer"],
+      requires=["PyQt4", "pyqtgraph"])