BladeRF input: refactoring: device open close moved in the constructor and destructor respectively of the input object

plugins/samplesource/bladerfinput/bladerfinput.cpp

@@ -37,28 +37,25 @@ BladerfInput::BladerfInput(DeviceSourceAPI *deviceAPI) :
 	m_settings(),
 	m_dev(0),
 	m_bladerfThread(0),
-	m_deviceDescription("BladeRFInput")
+	m_deviceDescription("BladeRFInput"),
+	m_running(false)
 {
+    openDevice();
     m_deviceAPI->setBuddySharedPtr(&m_sharedParams);
 }
 
 BladerfInput::~BladerfInput()
 {
-    if (m_dev != 0)
+    if (m_running) stop();
-    {
+    closeDevice();
-        stop();
-    }
-
     m_deviceAPI->setBuddySharedPtr(0);
 }
 
-bool BladerfInput::start(int device)
+bool BladerfInput::openDevice()
 {
-//	QMutexLocker mutexLocker(&m_mutex);
-
     if (m_dev != 0)
     {
-		stop();
+        closeDevice();
     }
 
     int res;
@@ -110,70 +107,56 @@ bool BladerfInput::start(int device)
         m_sharedParams.m_dev = m_dev;
     }
 
-//	if ((m_dev = open_bladerf_from_serial(0)) == 0) // TODO: fix; Open first available device as there is no proper handling for multiple devices
-//	{
-//		qCritical("could not open BladeRF");
-//		return false;
-//	}
-//
-//    fpga_loaded = bladerf_is_fpga_configured(m_dev);
-//
-//    if (fpga_loaded < 0)
-//    {
-//    	qCritical("Failed to check FPGA state: %s",
-//                  bladerf_strerror(fpga_loaded));
-//    	return false;
-//    }
-//    else if (fpga_loaded == 0)
-//    {
-//    	qCritical("The device's FPGA is not loaded.");
-//    	return false;
-//    }
-
     // TODO: adjust USB transfer data according to sample rate
     if ((res = bladerf_sync_config(m_dev, BLADERF_MODULE_RX, BLADERF_FORMAT_SC16_Q11, 64, 8192, 32, 10000)) < 0)
     {
         qCritical("BladerfInput::start: bladerf_sync_config with return code %d", res);
-    	goto failed;
+        return false;
     }
 
     if ((res = bladerf_enable_module(m_dev, BLADERF_MODULE_RX, true)) < 0)
     {
         qCritical("BladerfInput::start: bladerf_enable_module with return code %d", res);
-    	goto failed;
+        return false;
     }
 
-	if((m_bladerfThread = new BladerfInputThread(m_dev, &m_sampleFifo)) == NULL) {
+    return true;
-		qFatal("BladerfInput::start: out of memory");
-		goto failed;
 }
 
+bool BladerfInput::start(int device)
+{
+//	QMutexLocker mutexLocker(&m_mutex);
+
+    if (!m_dev) {
+        return false;
+    }
+
+    if (m_running) stop();
+
+	if((m_bladerfThread = new BladerfInputThread(m_dev, &m_sampleFifo)) == 0) {
+		qFatal("BladerfInput::start: out of memory");
+		stop();
+		return false;
+	}
+
+	m_bladerfThread->setLog2Decimation(m_settings.m_log2Decim);
+	m_bladerfThread->setFcPos((int) m_settings.m_fcPos);
+
 	m_bladerfThread->startWork();
 
 //	mutexLocker.unlock();
 	applySettings(m_settings, true);
 
 	qDebug("BladerfInput::startInput: started");
+	m_running = true;
 
 	return true;
-
-failed:
-	stop();
-	return false;
 }
 
-void BladerfInput::stop()
+void BladerfInput::closeDevice()
 {
-//	QMutexLocker mutexLocker(&m_mutex);
     int res;
 
-	if(m_bladerfThread != 0)
-	{
-		m_bladerfThread->stopWork();
-		delete m_bladerfThread;
-		m_bladerfThread = 0;
-	}
-
     if ((res = bladerf_enable_module(m_dev, BLADERF_MODULE_RX, false)) < 0)
     {
         qCritical("BladerfInput::stop: bladerf_enable_module with return code %d", res);
@@ -209,12 +192,20 @@ void BladerfInput::stop()
 
     m_sharedParams.m_dev = 0;
     m_dev = 0;
+}
 
-//	if(m_dev != 0)
+void BladerfInput::stop()
-//	{
+{
-//		bladerf_close(m_dev);
+//	QMutexLocker mutexLocker(&m_mutex);
-//		m_dev = 0;
+
-//	}
+	if(m_bladerfThread != 0)
+	{
+		m_bladerfThread->stopWork();
+		delete m_bladerfThread;
+		m_bladerfThread = 0;
+	}
+
+	m_running = false;
 }
 
 const QString& BladerfInput::getDeviceDescription() const
@@ -458,7 +449,7 @@ bool BladerfInput::applySettings(const BladeRFInputSettings& settings, bool forc
 		m_settings.m_log2Decim = settings.m_log2Decim;
 		forwardChange = true;
 
-		if(m_dev != 0)
+		if (m_bladerfThread != 0)
 		{
 			m_bladerfThread->setLog2Decimation(m_settings.m_log2Decim);
 			qDebug() << "BladerfInput::applySettings: set decimation to " << (1<<m_settings.m_log2Decim);
@@ -469,7 +460,7 @@ bool BladerfInput::applySettings(const BladeRFInputSettings& settings, bool forc
 	{
 		m_settings.m_fcPos = settings.m_fcPos;
 
-		if(m_dev != 0)
+		if (m_bladerfThread != 0)
 		{
 			m_bladerfThread->setFcPos((int) m_settings.m_fcPos);
 			qDebug() << "BladerfInput::applySettings: set fc pos (enum) to " << (int) m_settings.m_fcPos;

plugins/samplesource/bladerfinput/bladerfinput.h

@@ -81,6 +81,8 @@ public:
 	virtual bool handleMessage(const Message& message);
 
 private:
+    bool openDevice();
+    void closeDevice();
 	bool applySettings(const BladeRFInputSettings& settings, bool force);
 	bladerf_lna_gain getLnaGain(int lnaGain);
 //	struct bladerf *open_bladerf_from_serial(const char *serial);
@@ -92,6 +94,7 @@ private:
 	BladerfInputThread* m_bladerfThread;
 	QString m_deviceDescription;
 	DeviceBladeRFParams m_sharedParams;
+	bool m_running;
 };
 
 #endif // INCLUDE_BLADERFINPUT_H