Clone Kernel SDR driver.

2026-07-26 12:04:13 -04:00 · 2015-03-31 18:46:29 +01:00
parent 6ac25f7bad
commit 73832a6c45
25 changed files with 1201 additions and 4 deletions
@@ -0,0 +1,167 @@
+///////////////////////////////////////////////////////////////////////////////////
+// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
+// written by Christian Daniel                                                   //
+//                                                                               //
+// 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 as version 3 of the License, or                  //
+//                                                                               //
+// 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 V3 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/>.          //
+///////////////////////////////////////////////////////////////////////////////////
+
+#include <string.h>
+#include <errno.h>
+#include "v4linput.h"
+#include "v4lthread.h"
+#include "v4lgui.h"
+#include "util/simpleserializer.h"
+
+MESSAGE_CLASS_DEFINITION(V4LInput::MsgConfigureV4L, Message)
+MESSAGE_CLASS_DEFINITION(V4LInput::MsgReportV4L, Message)
+
+V4LInput::Settings::Settings() :
+	m_gain(0)
+{
+}
+
+void V4LInput::Settings::resetToDefaults()
+{
+	m_gain = 0;
+}
+
+QByteArray V4LInput::Settings::serialize() const
+{
+	SimpleSerializer s(1);
+	s.writeS32(1, m_gain);
+	s.writeS32(2, SAMPLERATE);
+	return s.final();
+}
+
+bool V4LInput::Settings::deserialize(const QByteArray& data)
+{
+	SimpleDeserializer d(data);
+
+	if(!d.isValid()) {
+		resetToDefaults();
+		return false;
+	}
+
+	if(d.getVersion() == 1) {
+		d.readS32(1, &m_gain, 0);
+		//d.readS32(2, &m_samplerate, 0);
+		return true;
+	} else {
+		resetToDefaults();
+		return false;
+	}
+}
+
+V4LInput::V4LInput(MessageQueue* msgQueueToGUI) :
+	SampleSource(msgQueueToGUI),
+	m_settings(),
+	m_V4LThread(NULL),
+	m_deviceDescription()
+{
+}
+
+V4LInput::~V4LInput()
+{
+	stopInput();
+}
+
+bool V4LInput::startInput(int device)
+{
+	QMutexLocker mutexLocker(&m_mutex);
+	double freq;
+
+	if(m_V4LThread)
+		return false;
+
+	if(!m_sampleFifo.setSize(4096*16)) {
+		qCritical("Could not allocate SampleFifo");
+		return false;
+	}
+
+	freq = (double)getCenterFrequency();
+	if((m_V4LThread = new V4LThread(&m_sampleFifo, freq)) == NULL) {
+		qFatal("out of memory");
+		return false;
+	}
+
+	m_deviceDescription = QString("RTL-SDR /dev/swradio0");
+
+	qDebug("V4LInput: start");
+	//MsgReportV4L::create(m_gains)->submit(m_guiMessageQueue);
+
+	return true;
+}
+
+void V4LInput::stopInput()
+{
+	QMutexLocker mutexLocker(&m_mutex);
+
+	if(m_V4LThread) {
+		m_V4LThread->stopWork();
+		// wait for thread to quit ?
+		delete m_V4LThread;
+		m_V4LThread = NULL;
+	}
+	m_deviceDescription.clear();
+}
+
+const QString& V4LInput::getDeviceDescription() const
+{
+	return m_deviceDescription;
+}
+
+int V4LInput::getSampleRate() const
+{
+	int result = SAMPLERATE / 4;
+	return result;
+}
+
+quint64 V4LInput::getCenterFrequency() const
+{
+	return m_generalSettings.m_centerFrequency;
+}
+
+bool V4LInput::handleMessage(Message* message)
+{
+	if(MsgConfigureV4L::match(message)) {
+		MsgConfigureV4L* conf = (MsgConfigureV4L*)message;
+		applySettings(conf->getGeneralSettings(), conf->getSettings(), false);
+		message->completed();
+		return true;
+	} else {
+		return false;
+	}
+}
+
+void V4LInput::applySettings(const GeneralSettings& generalSettings, const Settings& settings, bool force)
+{
+	QMutexLocker mutexLocker(&m_mutex);
+
+	if (!m_V4LThread) {
+			m_generalSettings.m_centerFrequency = generalSettings.m_centerFrequency;
+			return;
+	}
+
+	if((m_generalSettings.m_centerFrequency != generalSettings.m_centerFrequency) || force) {
+		m_V4LThread->set_center_freq( (double)(generalSettings.m_centerFrequency
+								+ (SAMPLERATE / 4) ));
+	}
+	m_generalSettings.m_centerFrequency = generalSettings.m_centerFrequency;
+#if 0
+	if((m_settings.m_gain != settings.m_gain) || force) {
+		m_settings.m_gain = settings.m_gain;
+		m_V4LThread->set_tuner_gain((double)m_settings.m_gain);
+	}
+#endif
+}
+