Allow backend executable to be multiple words (e.g. python /path/to/soapy_power.py)

README.rst

@@ -75,10 +75,11 @@ Usage
 Start QSpectrumAnalyzer by running ``qspectrumanalyzer``.
 
 You can choose which backend you want to use in *File* -> *Settings*
-(default is ``soapy_power``). Sample rate, path to backend executable
+(or *Application menu* -> *Preferences* on Mac OS X), default is
-and additional backend parameters can be also manually specified there.
+``soapy_power``. Sample rate, path to backend executable and additional
-You can also set waterfall plot history size. Default is 100 lines, be aware
+backend parameters can be also manually specified there. You can also
-that really large sweeps (with a lot of bins) would require a lot of system
+set waterfall plot history size. Default is 100 lines, be aware that
+really large sweeps (with a lot of bins) would require a lot of system
 memory, so don't make this number too big.
 
 Controls should be intuitive, but if you want consistent results, you should

qspectrumanalyzer/backends/hackrf_sweep.py

@@ -88,15 +88,15 @@ class PowerThread(BasePowerThread):
         """Start hackrf_sweep process"""
         if not self.process and self.params:
             settings = QtCore.QSettings()
-            cmdline = [
+            cmdline = shlex.split(settings.value("executable", "hackrf_sweep"))
-                settings.value("executable", "hackrf_sweep"),
+            cmdline.extend([
                 "-f", "{}:{}".format(int(self.params["start_freq"]),
                                      int(self.params["stop_freq"])),
                 "-B",
                 "-w", "{}".format(int(self.params["bin_size"] * 1000)),
                 "-l", "{}".format(int(self.params["lna_gain"])),
                 "-g", "{}".format(int(self.params["vga_gain"])),
-            ]
+            ])
 
             if self.params["single_shot"]:
                 cmdline.append("-1")

qspectrumanalyzer/backends/rtl_power.py

@@ -41,8 +41,8 @@ class PowerThread(BasePowerThread):
         """Start rtl_power process"""
         if not self.process and self.params:
             settings = QtCore.QSettings()
-            cmdline = [
+            cmdline = shlex.split(settings.value("executable", "rtl_power"))
-                settings.value("executable", "rtl_power"),
+            cmdline.extend([
                 "-f", "{}M:{}M:{}k".format(self.params["start_freq"],
                                            self.params["stop_freq"],
                                            self.params["bin_size"]),
@@ -50,7 +50,7 @@ class PowerThread(BasePowerThread):
                 "-d", "{}".format(self.params["device"]),
                 "-p", "{}".format(self.params["ppm"]),
                 "-c", "{}".format(self.params["crop"])
-            ]
+            ])
 
             if self.params["gain"] >= 0:
                 cmdline.extend(["-g", "{}".format(self.params["gain"])])

qspectrumanalyzer/backends/rtl_power_fftw.py

@@ -66,8 +66,8 @@ class PowerThread(BasePowerThread):
         """Start rtl_power_fftw process"""
         if not self.process and self.params:
             settings = QtCore.QSettings()
-            cmdline = [
+            cmdline = shlex.split(settings.value("executable", "rtl_power_fftw"))
-                settings.value("executable", "rtl_power_fftw"),
+            cmdline.extend([
                 "-f", "{}M:{}M".format(self.params["start_freq"],
                                        self.params["stop_freq"]),
                 "-b", "{}".format(self.params["bins"]),
@@ -75,7 +75,7 @@ class PowerThread(BasePowerThread):
                 "-d", "{}".format(self.params["device"]),
                 "-r", "{}".format(self.params["sample_rate"]),
                 "-p", "{}".format(self.params["ppm"]),
-            ]
+            ])
 
             if self.params["gain"] >= 0:
                 cmdline.extend(["-g", "{}".format(self.params["gain"])])

qspectrumanalyzer/backends/rx_power.py

@@ -44,8 +44,8 @@ class PowerThread(BasePowerThread):
         """Start rx_power process"""
         if not self.process and self.params:
             settings = QtCore.QSettings()
-            cmdline = [
+            cmdline = shlex.split(settings.value("executable", "rx_power"))
-                settings.value("executable", "rx_power"),
+            cmdline.extend([
                 "-f", "{}M:{}M:{}k".format(self.params["start_freq"],
                                            self.params["stop_freq"],
                                            self.params["bin_size"]),
@@ -53,7 +53,7 @@ class PowerThread(BasePowerThread):
                 "-d", "{}".format(self.params["device"]),
                 "-p", "{}".format(self.params["ppm"]),
                 "-c", "{}".format(self.params["crop"])
-            ]
+            ])
 
             if self.params["gain"] >= 0:
                 cmdline.extend(["-g", "{}".format(self.params["gain"])])

qspectrumanalyzer/backends/soapy_power.py

@@ -78,8 +78,8 @@ class PowerThread(BasePowerThread):
 
             # Prepare soapy_power cmdline parameters
             settings = QtCore.QSettings()
-            cmdline = [
+            cmdline = shlex.split(settings.value("executable", "soapy_power"))
-                settings.value("executable", "soapy_power"),
+            cmdline.extend([
                 "-f", "{}M:{}M".format(self.params["start_freq"],
                                        self.params["stop_freq"]),
                 "-B", "{}k".format(self.params["bin_size"]),
@@ -89,7 +89,7 @@ class PowerThread(BasePowerThread):
                 "-p", "{}".format(self.params["ppm"]),
                 "-F", "soapy_power_bin",
                 "--output-fd", "{}".format(self.pipe_write_fd),
-            ]
+            ])
 
             if self.params["gain"] >= 0:
                 cmdline.extend(["-g", "{}".format(self.params["gain"])])