SDRdaemon plugin: handle data reads

plugins/samplesource/sdrdaemon/sdrdaemonbuffer.cpp

@@ -40,6 +40,7 @@ SDRdaemonBuffer::SDRdaemonBuffer(uint32_t blockSize) :
 	m_readCount(0),
 	m_rawSize(0),
 	m_rawBuffer(0),
+	m_frameBuffer(0),
 	m_bytesInBlock(0),
 	m_nbBlocks(0)
 {
@@ -59,6 +60,10 @@ SDRdaemonBuffer::~SDRdaemonBuffer()
 	if (m_lz4OutBuffer) {
 		delete[] m_lz4OutBuffer;
 	}
+
+	if (m_frameBuffer) {
+		delete[] m_frameBuffer;
+	}
 }
 
 bool SDRdaemonBuffer::readMeta(char *array, uint32_t length)
@@ -227,6 +232,24 @@ void SDRdaemonBuffer::writeToRawBufferLZ4(const char *array, uint32_t length)
     writeToRawBufferUncompressed((const char *) m_lz4OutBuffer, m_frameSize);
 }
 
+uint8_t *SDRdaemonBuffer::readData(uint32_t length)
+{
+	uint32_t readCount = m_readCount;
+
+	if (m_readCount + length < m_rawSize)
+	{
+		m_readCount += length;
+		return &m_rawBuffer[readCount];
+	}
+	else
+	{
+		std::memcpy((void *) m_frameBuffer, (const void *) &m_rawBuffer[readCount], m_rawSize - m_rawCount);
+		m_readCount = length - (m_rawSize - m_rawCount);
+		std::memcpy((void *) m_frameBuffer, (const void *) &m_frameBuffer[m_rawSize - m_rawCount], m_readCount);
+		return m_frameBuffer;
+	}
+}
+
 void SDRdaemonBuffer::updateLZ4Sizes(uint32_t frameSize)
 {
 	uint32_t maxInputSize = LZ4_compressBound(frameSize);
@@ -259,6 +282,12 @@ void SDRdaemonBuffer::updateBufferSize(uint32_t frameSize)
 
 	m_rawSize = nbFrames * frameSize;
 	m_rawBuffer = new uint8_t[m_rawSize];
+
+	if (m_frameBuffer) {
+		delete[] m_frameBuffer;
+	}
+
+	m_frameBuffer = new uint8_t[frameSize];
 }
 
 void SDRdaemonBuffer::updateBlockCounts(uint32_t nbBytesReceived)

plugins/samplesource/sdrdaemon/sdrdaemonbuffer.h

@@ -65,6 +65,7 @@ public:
 	~SDRdaemonBuffer();
 	bool readMeta(char *array, uint32_t length);  //!< Attempt to read meta. Returns true if meta block
 	void writeData(char *array, uint32_t length); //!< Write data into buffer.
+	uint8_t *readData(uint32_t length);           //!< Read data from buffer
 	const MetaData& getCurrentMeta() const { return m_currentMeta; }
 	void updateBlockCounts(uint32_t nbBytesReceived);
 	bool isSync() const { return m_sync; }
@@ -103,6 +104,7 @@ private:
 	uint32_t m_readCount;    //!< Current read position in the raw samples buffer
 	uint32_t m_rawSize;      //!< Size of the raw samples buffer in bytes
     uint8_t *m_rawBuffer;    //!< Buffer for raw samples obtained from UDP (I/Q not in a formal I/Q structure)
+    uint8_t *m_frameBuffer;  //!< Buffer to build a frame length of raw samples
     uint32_t m_bytesInBlock; //!< Number of bytes received in the current UDP block
     uint32_t m_nbBlocks;     //!< Number of UDP blocks received in the current frame
 };

plugins/samplesource/sdrdaemon/sdrdaemoninput.cpp

@@ -88,28 +88,6 @@ SDRdaemonInput::~SDRdaemonInput()
 	stop();
 }
 
-void SDRdaemonInput::openFileStream()
-{
-	qDebug() << "SDRdaemonInput::openFileStream: " << m_fileName.toStdString().c_str();
-
-	//stopInput();
-
-	if (m_ifstream.is_open()) {
-		m_ifstream.close();
-	}
-
-	m_ifstream.open(m_fileName.toStdString().c_str(), std::ios::binary);
-	FileSink::Header header;
-	FileSink::readHeader(m_ifstream, header);
-
-	m_sampleRate = header.sampleRate;
-	m_centerFrequency = header.centerFrequency;
-	m_startingTimeStamp = header.startTimeStamp;
-
-	MsgReportSDRdaemonStreamData *report = MsgReportSDRdaemonStreamData::create(m_sampleRate, m_centerFrequency, m_startingTimeStamp); // file stream data
-	getOutputMessageQueueToGUI()->push(report);
-}
-
 bool SDRdaemonInput::init(const Message& message)
 {
 	return false;
@@ -120,19 +98,12 @@ bool SDRdaemonInput::start(int device)
 	QMutexLocker mutexLocker(&m_mutex);
 	qDebug() << "SDRdaemonInput::startInput";
 
-	if (m_ifstream.tellg() != 0) {
-		m_ifstream.clear();
-		m_ifstream.seekg(0, std::ios::beg);
-	}
-
 	if(!m_sampleFifo.setSize(96000 * 4)) {
 		qCritical("Could not allocate SampleFifo");
 		return false;
 	}
 
-	//openFileStream();
+	if((m_SDRdaemonThread = new SDRdaemonThread(&m_sampleFifo)) == NULL) {
-
-	if((m_SDRdaemonThread = new SDRdaemonThread(&m_ifstream, &m_sampleFifo)) == NULL) {
 		qFatal("out of memory");
 		stop();
 		return false;
@@ -197,7 +168,6 @@ bool SDRdaemonInput::handleMessage(const Message& message)
 	{
 		MsgConfigureSDRdaemonName& conf = (MsgConfigureSDRdaemonName&) message;
 		m_fileName = conf.getFileName();
-		openFileStream();
 		return true;
 	}
 	else if (MsgConfigureSDRdaemonWork::match(message))
@@ -259,13 +229,6 @@ bool SDRdaemonInput::applySettings(const Settings& settings, bool force)
 			}
 		}
 
-		if (m_ifstream.is_open())
-		{
-			m_ifstream.close();
-		}
-
-		openFileStream();
-
 		if (m_SDRdaemonThread != 0)
 		{
 			m_SDRdaemonThread->setSamplerate(m_sampleRate);
@@ -280,7 +243,6 @@ bool SDRdaemonInput::applySettings(const Settings& settings, bool force)
 		DSPEngine::instance()->getInputMessageQueue()->push(notif);
 
 		qDebug() << "SDRdaemonInput::applySettings:"
-				<< " file name: " << settings.m_fileName.toStdString().c_str()
 				<< " center freq: " << m_centerFrequency << " Hz"
 				<< " sample rate: " << m_sampleRate
 				<< " Unix timestamp: " << m_startingTimeStamp;

plugins/samplesource/sdrdaemon/sdrdaemoninput.h

@@ -22,7 +22,6 @@
 #include <QTimer>
 #include <ctime>
 #include <iostream>
-#include <fstream>
 
 class SDRdaemonThread;
 
@@ -197,7 +196,6 @@ public:
 private:
 	QMutex m_mutex;
 	Settings m_settings;
-	std::ifstream m_ifstream;
 	SDRdaemonThread* m_SDRdaemonThread;
 	QString m_deviceDescription;
 	QString m_fileName;
@@ -207,7 +205,6 @@ private:
 	const QTimer& m_masterTimer;
 
 	bool applySettings(const Settings& settings, bool force);
-	void openFileStream();
 };
 
 #endif // INCLUDE_SDRDAEMONINPUT_H

plugins/samplesource/sdrdaemon/sdrdaemonthread.cpp

@@ -26,14 +26,13 @@
 const int SDRdaemonThread::m_rateDivider = 1000/SDRDAEMON_THROTTLE_MS;
 const int SDRdaemonThread::m_udpPayloadSize = 512;
 
-SDRdaemonThread::SDRdaemonThread(std::ifstream *samplesStream, SampleFifo* sampleFifo, QObject* parent) :
+SDRdaemonThread::SDRdaemonThread(SampleFifo* sampleFifo, QObject* parent) :
 	QThread(parent),
 	m_running(false),
 	m_dataSocket(0),
 	m_dataAddress(QHostAddress::LocalHost),
 	m_dataPort(9090),
 	m_dataConnected(false),
-	m_ifstream(samplesStream),
 	m_buf(0),
 	m_udpBuf(0),
 	m_bufsize(0),
@@ -43,7 +42,6 @@ SDRdaemonThread::SDRdaemonThread(std::ifstream *samplesStream, SampleFifo* sampl
 	m_sdrDaemonBuffer(m_udpPayloadSize),
 	m_samplerate(0)
 {
-    assert(m_ifstream != 0);
     m_udpBuf = new char[m_udpPayloadSize];
 }
 
@@ -163,23 +161,8 @@ void SDRdaemonThread::tick()
 	if (m_running)
 	{
 		// read samples directly feeding the SampleFifo (no callback)
-		m_ifstream->read(reinterpret_cast<char*>(m_buf), m_chunksize);
+		m_sampleFifo->write(reinterpret_cast<quint8*>(m_sdrDaemonBuffer.readData(m_chunksize)), m_chunksize);
-        
+		m_samplesCount += m_chunksize / 4;
-        if (m_ifstream->eof())
-        {
-            m_sampleFifo->write(m_buf, m_ifstream->gcount());
-            // TODO: handle loop playback situation
-    		m_ifstream->clear();
-    		m_ifstream->seekg(0, std::ios::beg);
-    		m_samplesCount = 0;
-            //stopWork();
-            //m_ifstream->close();
-        }
-        else
-        {
-            m_sampleFifo->write(m_buf, m_chunksize);
-    		m_samplesCount += m_chunksize / 4;
-        }
 	}
 }
 

plugins/samplesource/sdrdaemon/sdrdaemonthread.h

@@ -24,7 +24,6 @@
 #include <QHostAddress>
 
 #include <iostream>
-#include <fstream>
 #include <cstdlib>
 #include "dsp/samplefifo.h"
 #include "dsp/inthalfbandfilter.h"
@@ -38,7 +37,7 @@ class SDRdaemonThread : public QThread {
 	Q_OBJECT
 
 public:
-	SDRdaemonThread(std::ifstream *samplesStream, SampleFifo* sampleFifo, QObject* parent = NULL);
+	SDRdaemonThread(SampleFifo* sampleFifo, QObject* parent = NULL);
 	~SDRdaemonThread();
 
 	void startWork();
@@ -57,7 +56,6 @@ private:
 	QWaitCondition m_startWaiter;
 	bool m_running;
 
-	std::ifstream* m_ifstream;
 	QUdpSocket *m_dataSocket;
 	QHostAddress m_dataAddress;
 	int m_dataPort;