RTLSDRThread Class Reference

#include <rtlsdrthread.h>

Inherits QThread.

Collaboration diagram for RTLSDRThread:

Public Member Functions
	RTLSDRThread (rtlsdr_dev_t *dev, SampleSinkFifo *sampleFifo, QObject *parent=NULL)
	~RTLSDRThread ()
void	startWork ()
void	stopWork ()
void	setSamplerate (int samplerate)
void	setLog2Decimation (unsigned int log2_decim)
void	setFcPos (int fcPos)

Private Member Functions
void	run ()
void	callback (const quint8 *buf, qint32 len)

Static Private Member Functions
static void	callbackHelper (unsigned char *buf, uint32_t len, void *ctx)

Private Attributes
QMutex	m_startWaitMutex
QWaitCondition	m_startWaiter
bool	m_running
rtlsdr_dev_t *	m_dev
SampleVector	m_convertBuffer
SampleSinkFifo *	m_sampleFifo
int	m_samplerate
unsigned int	m_log2Decim
int	m_fcPos
DecimatorsU< qint32, quint8, SDR_RX_SAMP_SZ, 8, 127 >	m_decimators

Detailed Description

Definition at line 30 of file rtlsdrthread.h.

Constructor & Destructor Documentation

RTLSDRThread()

RTLSDRThread::RTLSDRThread	(	rtlsdr_dev_t *	dev,
		SampleSinkFifo *	sampleFifo,
		QObject *	parent = NULL
	)

Definition at line 27 of file rtlsdrthread.cpp.

                                                                                         :
    QThread(parent),
    m_running(false),
    m_dev(dev),
    m_convertBuffer(FCD_BLOCKSIZE),
    m_sampleFifo(sampleFifo),
    m_samplerate(288000),
    m_log2Decim(4),
    m_fcPos(0)
{
}

~RTLSDRThread()

RTLSDRThread::~RTLSDRThread

(

)

Definition at line 39 of file rtlsdrthread.cpp.

References stopWork().

{
    stopWork();
}

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Member Function Documentation

callback()

void RTLSDRThread::callback ( const quint8 *  buf, qint32  len  )

private

Definition at line 92 of file rtlsdrthread.cpp.

References DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate1(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate16_cen(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate16_inf(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate16_sup(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate2_cen(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate2_inf(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate2_sup(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate32_cen(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate32_inf(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate32_sup(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate4_cen(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate4_inf(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate4_sup(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate64_cen(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate64_inf(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate64_sup(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate8_cen(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate8_inf(), DecimatorsU< StorageType, T, SdrBits, InputBits, Shift >::decimate8_sup(), m_convertBuffer, m_decimators, m_dev, m_fcPos, m_log2Decim, m_running, m_sampleFifo, and SampleSinkFifo::write().

Referenced by callbackHelper().

{
    SampleVector::iterator it = m_convertBuffer.begin();

    if (m_log2Decim == 0)
    {
        m_decimators.decimate1(&it, buf, len);
    }
    else
    {
        if (m_fcPos == 0) // Infradyne
        {
            switch (m_log2Decim)
            {
            case 1:
                m_decimators.decimate2_inf(&it, buf, len);
                break;
            case 2:
                m_decimators.decimate4_inf(&it, buf, len);
                break;
            case 3:
                m_decimators.decimate8_inf(&it, buf, len);
                break;
            case 4:
                m_decimators.decimate16_inf(&it, buf, len);
                break;
            case 5:
                m_decimators.decimate32_inf(&it, buf, len);
                break;
            case 6:
                m_decimators.decimate64_inf(&it, buf, len);
                break;
            default:
                break;
            }
        }
        else if (m_fcPos == 1) // Supradyne
        {
            switch (m_log2Decim)
            {
            case 1:
                m_decimators.decimate2_sup(&it, buf, len);
                break;
            case 2:
                m_decimators.decimate4_sup(&it, buf, len);
                break;
            case 3:
                m_decimators.decimate8_sup(&it, buf, len);
                break;
            case 4:
                m_decimators.decimate16_sup(&it, buf, len);
                break;
            case 5:
                m_decimators.decimate32_sup(&it, buf, len);
                break;
            case 6:
                m_decimators.decimate64_sup(&it, buf, len);
                break;
            default:
                break;
            }
        }
        else // Centered
        {
            switch (m_log2Decim)
            {
            case 1:
                m_decimators.decimate2_cen(&it, buf, len);
                break;
            case 2:
                m_decimators.decimate4_cen(&it, buf, len);
                break;
            case 3:
                m_decimators.decimate8_cen(&it, buf, len);
                break;
            case 4:
                m_decimators.decimate16_cen(&it, buf, len);
                break;
            case 5:
                m_decimators.decimate32_cen(&it, buf, len);
                break;
            case 6:
                m_decimators.decimate64_cen(&it, buf, len);
                break;
            default:
                break;
            }
        }
    }

    m_sampleFifo->write(m_convertBuffer.begin(), it);

    if(!m_running)
        rtlsdr_cancel_async(m_dev);
}

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callbackHelper()

void RTLSDRThread::callbackHelper ( unsigned char *  buf, uint32_t  len, void *  ctx  )

staticprivate

Definition at line 188 of file rtlsdrthread.cpp.

References callback().

Referenced by run().

{
    RTLSDRThread* thread = (RTLSDRThread*)ctx;
    thread->callback(buf, len);
}

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run()

void RTLSDRThread::run ( )

private

Definition at line 74 of file rtlsdrthread.cpp.

References callbackHelper(), FCD_BLOCKSIZE, m_dev, m_running, and m_startWaiter.

{
    int res;

    m_running = true;
    m_startWaiter.wakeAll();

    while(m_running) {
        if((res = rtlsdr_read_async(m_dev, &RTLSDRThread::callbackHelper, this, 32, FCD_BLOCKSIZE)) < 0) {
            qCritical("RTLSDRThread: async error: %s", strerror(errno));
            break;
        }
    }

    m_running = false;
}

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setFcPos()

void RTLSDRThread::setFcPos

(

int

fcPos

)

Definition at line 69 of file rtlsdrthread.cpp.

References m_fcPos.

Referenced by RTLSDRInput::applySettings(), and RTLSDRInput::start().

{
    m_fcPos = fcPos;
}

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setLog2Decimation()

void RTLSDRThread::setLog2Decimation

(

unsigned int

log2_decim

)

Definition at line 64 of file rtlsdrthread.cpp.

References m_log2Decim.

Referenced by RTLSDRInput::applySettings(), and RTLSDRInput::start().

{
    m_log2Decim = log2_decim;
}

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setSamplerate()

void RTLSDRThread::setSamplerate

(

int

samplerate

)

Definition at line 59 of file rtlsdrthread.cpp.

References m_samplerate.

Referenced by RTLSDRInput::applySettings(), and RTLSDRInput::start().

{
    m_samplerate = samplerate;
}

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startWork()

void RTLSDRThread::startWork

(

)

Definition at line 44 of file rtlsdrthread.cpp.

References m_running, m_startWaiter, and m_startWaitMutex.

Referenced by RTLSDRInput::start().

{
    m_startWaitMutex.lock();
    start();
    while(!m_running)
        m_startWaiter.wait(&m_startWaitMutex, 100);
    m_startWaitMutex.unlock();
}

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stopWork()

void RTLSDRThread::stopWork

(

)

Definition at line 53 of file rtlsdrthread.cpp.

References m_running.

Referenced by RTLSDRInput::stop(), and ~RTLSDRThread().

{
    m_running = false;
    wait();
}

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Member Data Documentation

m_convertBuffer

SampleVector RTLSDRThread::m_convertBuffer

private

Definition at line 49 of file rtlsdrthread.h.

Referenced by callback().

m_decimators

DecimatorsU<qint32, quint8, SDR_RX_SAMP_SZ, 8, 127> RTLSDRThread::m_decimators

private

Definition at line 56 of file rtlsdrthread.h.

Referenced by callback().

m_dev

rtlsdr_dev_t* RTLSDRThread::m_dev

private

Definition at line 48 of file rtlsdrthread.h.

Referenced by callback(), and run().

m_fcPos

int RTLSDRThread::m_fcPos

private

Definition at line 54 of file rtlsdrthread.h.

Referenced by callback(), and setFcPos().

m_log2Decim

unsigned int RTLSDRThread::m_log2Decim

private

Definition at line 53 of file rtlsdrthread.h.

Referenced by callback(), and setLog2Decimation().

m_running

bool RTLSDRThread::m_running

private

Definition at line 46 of file rtlsdrthread.h.

Referenced by callback(), run(), startWork(), and stopWork().

m_sampleFifo

SampleSinkFifo* RTLSDRThread::m_sampleFifo

private

Definition at line 50 of file rtlsdrthread.h.

Referenced by callback().

m_samplerate

int RTLSDRThread::m_samplerate

private

Definition at line 52 of file rtlsdrthread.h.

Referenced by setSamplerate().

m_startWaiter

QWaitCondition RTLSDRThread::m_startWaiter

private

Definition at line 45 of file rtlsdrthread.h.

Referenced by run(), and startWork().

m_startWaitMutex

QMutex RTLSDRThread::m_startWaitMutex

private

Definition at line 44 of file rtlsdrthread.h.

Referenced by startWork().

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The documentation for this class was generated from the following files:

• plugins/samplesource/rtlsdr/rtlsdrthread.h
• plugins/samplesource/rtlsdr/rtlsdrthread.cpp