From b5f2475fbf8ec72246420d0058bd202eecd8c15f Mon Sep 17 00:00:00 2001
From: f4exb <f4exb06@gmail.com>
Date: Fri, 14 Aug 2015 09:02:10 +0200
Subject: [PATCH] Deep redesign: phase #3

---
 include-gpl/dsp/dspengine.h               |  1 +
 include/dsp/samplesource/samplesource.h   | 10 +++-
 sdrbase/dsp/dspengine.cpp                 | 37 ++++++++++++
 sdrbase/dsp/samplesource/samplesource.cpp | 71 +++++++++--------------
 4 files changed, 75 insertions(+), 44 deletions(-)

diff --git a/include-gpl/dsp/dspengine.h b/include-gpl/dsp/dspengine.h
index ca85ef400..1f90f7aa8 100644
--- a/include-gpl/dsp/dspengine.h
+++ b/include-gpl/dsp/dspengine.h
@@ -118,6 +118,7 @@ private:
 
 private slots:
 	void handleData(); //!< Handle data when samples from source FIFO are ready to be processed
+	void handleSourceMessages(); //!< Handle source message output
 	void handleInputMessages(); //!< Handle input message queue
 	void handleSynchronousMessages(Message *message); //!< Handle synchronous messages with the thread
 };
diff --git a/include/dsp/samplesource/samplesource.h b/include/dsp/samplesource/samplesource.h
index f33d4104f..c6bd0cc29 100644
--- a/include/dsp/samplesource/samplesource.h
+++ b/include/dsp/samplesource/samplesource.h
@@ -34,8 +34,8 @@ public:
 	virtual void stop() = 0;
 
 	virtual const QString& getDeviceDescription() const = 0;
-	virtual int getSampleRate() const = 0;
-	virtual quint64 getCenterFrequency() const = 0;
+	virtual int getSampleRate() const { return m_sampleRate; };
+	virtual quint64 getCenterFrequency() const { return m_centerFrequency; };
 
 	virtual bool handleMessage(const Message& message) = 0;
 	
@@ -44,9 +44,15 @@ public:
     SampleFifo* getSampleFifo() { return &m_sampleFifo; }
 
 protected:
+    void setSampleRate(int sampleRate);
+    void setCenterFrequency(quint64 centerFrequency);
+	void sendNewData();
+
     SampleFifo m_sampleFifo;
 	MessageQueue m_inputMessageQueue;
 	MessageQueue m_outputMessageQueue;
+	int m_sampleRate;
+	quint64 m_centerFrequency;
 };
 
 #endif // INCLUDE_SAMPLESOURCE_H
diff --git a/sdrbase/dsp/dspengine.cpp b/sdrbase/dsp/dspengine.cpp
index aff05a6d8..0c57f9c5f 100644
--- a/sdrbase/dsp/dspengine.cpp
+++ b/sdrbase/dsp/dspengine.cpp
@@ -438,6 +438,7 @@ void DSPEngine::handleSetSource(SampleSource* source)
 	if(m_sampleSource != 0)
 	{
 		disconnect(m_sampleSource->getSampleFifo(), SIGNAL(dataReady()), this, SLOT(handleData()));
+		disconnect(m_sampleSource->getOutputMessageQueue(), SIGNAL(messageEnqueued()), this, SLOT(handleSourceMessages()));
 	}
 
 	m_sampleSource = source;
@@ -446,6 +447,7 @@ void DSPEngine::handleSetSource(SampleSource* source)
 	{
 		qDebug() << "  - connect";
 		connect(m_sampleSource->getSampleFifo(), SIGNAL(dataReady()), this, SLOT(handleData()), Qt::QueuedConnection);
+		connect(m_sampleSource->getOutputMessageQueue(), SIGNAL(messageEnqueued()), this, SLOT(handleSourceMessages()));
 	}
 }
 
@@ -566,3 +568,38 @@ void DSPEngine::handleInputMessages()
 		delete message;
 	}
 }
+
+void DSPEngine::handleSourceMessages()
+{
+	Message *message;
+
+	qDebug() << "DSPEngine::handleSourceMessages";
+
+	while ((message = m_sampleSource->getOutputMessageQueue()->pop()) != 0)
+	{
+		if (DSPSignalNotification::match(message))
+		{
+			DSPSignalNotification *notif = (DSPSignalNotification *) &message;
+
+			// update DSP values
+
+			m_sampleRate = notif->getSampleRate();
+			m_centerFrequency = notif->getFrequencyOffset();
+
+			// forward source changes to sinks
+
+			for(SampleSinks::const_iterator it = m_sampleSinks.begin(); it != m_sampleSinks.end(); it++)
+			{
+				qDebug() << "  - initializing " << (*it)->objectName().toStdString().c_str();
+				(*it)->init(*message);
+			}
+
+			// forward changes to listeners
+
+			DSPEngineReport* rep = new DSPEngineReport(m_sampleRate, m_centerFrequency);
+			m_outputMessageQueue.push(rep);
+		}
+
+		delete message;
+	}
+}
diff --git a/sdrbase/dsp/samplesource/samplesource.cpp b/sdrbase/dsp/samplesource/samplesource.cpp
index c48e60ba0..ac91bf4db 100644
--- a/sdrbase/dsp/samplesource/samplesource.cpp
+++ b/sdrbase/dsp/samplesource/samplesource.cpp
@@ -16,54 +16,41 @@
 ///////////////////////////////////////////////////////////////////////////////////
 
 #include "dsp/samplesource/samplesource.h"
-#include "util/simpleserializer.h"
+#include "dsp/dspcommands.h"
 
 #include <QDebug>
 
-SampleSource::GeneralSettings::GeneralSettings() :
-	m_centerFrequency(100000000)
-{
-}
-
-void SampleSource::GeneralSettings::resetToDefaults()
-{
-	m_centerFrequency = 100000000;
-}
-
-QByteArray SampleSource::GeneralSettings::serialize() const
-{
-	SimpleSerializer s(1);
-	s.writeU64(1, m_centerFrequency);
-	return s.final();
-}
-
-bool SampleSource::GeneralSettings::deserialize(const QByteArray& data)
-{
-	SimpleDeserializer d(data);
-
-	if(!d.isValid()) {
-		qDebug() << "SampleSource::GeneralSettings::deserialize: invalid deserializer";
-		resetToDefaults();
-		return false;
-	}
-
-	if(d.getVersion() == 1) {
-		d.readU64(1, &m_centerFrequency, 100000000);
-		qDebug() << "SampleSource::GeneralSettings::deserialize: center frequency = "
-				<< m_centerFrequency;
-		return true;
-	} else {
-		resetToDefaults();
-		return false;
-	}
-}
-
-SampleSource::SampleSource(MessageQueue* guiMessageQueue) :
-	m_sampleFifo(),
-	m_guiMessageQueue(guiMessageQueue)
+SampleSource::SampleSource() :
+	m_sampleRate(0),
+	m_centerFrequency(0)
 {
 }
 
 SampleSource::~SampleSource()
 {
 }
+
+void SampleSource::setSampleRate(int sampleRate)
+{
+	if (sampleRate != m_sampleRate)
+	{
+		// TODO: adjust FIFO size
+		m_sampleRate = sampleRate;
+		sendNewData();
+	}
+}
+
+void SampleSource::setCenterFrequency(quint64 centerFrequency)
+{
+	if (centerFrequency != m_centerFrequency)
+	{
+		m_centerFrequency = centerFrequency;
+		sendNewData();
+	}
+}
+
+void SampleSource::sendNewData()
+{
+	DSPSignalNotification *notif = new DSPSignalNotification(m_sampleRate, m_centerFrequency);
+	m_outputMessageQueue.push(notif);
+}