AirspyThread Class Reference

#include <airspythread.h>

Inherits QThread.

Collaboration diagram for AirspyThread:

Public Member Functions
	AirspyThread (struct airspy_device *dev, SampleSinkFifo *sampleFifo, QObject *parent=NULL)
	~AirspyThread ()
void	startWork ()
void	stopWork ()
void	setSamplerate (uint32_t samplerate)
void	setLog2Decimation (unsigned int log2_decim)
void	setFcPos (int fcPos)

Private Member Functions
void	run ()
void	callback (const qint16 *buf, qint32 len)

Static Private Member Functions
static int	rx_callback (airspy_transfer_t *transfer)

Private Attributes
QMutex	m_startWaitMutex
QWaitCondition	m_startWaiter
bool	m_running
struct airspy_device *	m_dev
qint16	m_buf [2 *AIRSPY_BLOCKSIZE]
SampleVector	m_convertBuffer
SampleSinkFifo *	m_sampleFifo
int	m_samplerate
unsigned int	m_log2Decim
int	m_fcPos
Decimators< qint32, qint16, SDR_RX_SAMP_SZ, 12 >	m_decimators

Static Private Attributes
static AirspyThread *	m_this = 0

Detailed Description

Definition at line 31 of file airspythread.h.

Constructor & Destructor Documentation

AirspyThread()

AirspyThread::AirspyThread	(	struct airspy_device *	dev,
		SampleSinkFifo *	sampleFifo,
		QObject *	parent = NULL
	)

Definition at line 28 of file airspythread.cpp.

References AIRSPY_BLOCKSIZE, m_buf, and m_this.

                                                                                                 :
    QThread(parent),
    m_running(false),
    m_dev(dev),
    m_convertBuffer(AIRSPY_BLOCKSIZE),
    m_sampleFifo(sampleFifo),
    m_samplerate(10),
    m_log2Decim(0),
    m_fcPos(0)
{
    m_this = this;
    std::fill(m_buf, m_buf + 2*AIRSPY_BLOCKSIZE, 0);
}

~AirspyThread()

AirspyThread::~AirspyThread

(

)

Definition at line 42 of file airspythread.cpp.

References m_this, and stopWork().

{
    stopWork();
    m_this = 0;
}

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Member Function Documentation

callback()

void AirspyThread::callback ( const qint16 *  buf, qint32  len  )

private

Definition at line 115 of file airspythread.cpp.

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

Referenced by rx_callback().

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

    if (m_log2Decim == 0)
    {
        m_decimators.decimate1(&it, buf, len);
    }
    else
    {
        if (m_fcPos == 0) // Infra
        {
            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) // Supra
        {
            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 if (m_fcPos == 2) // Center
        {
            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);
}

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run()

void AirspyThread::run ( )

private

Definition at line 79 of file airspythread.cpp.

References m_dev, m_running, m_startWaiter, and rx_callback().

{
    airspy_error rc;

    m_running = true;
    m_startWaiter.wakeAll();

    rc = (airspy_error) airspy_start_rx(m_dev, rx_callback, NULL);

    if (rc != AIRSPY_SUCCESS)
    {
        qCritical("AirspyThread::run: failed to start Airspy Rx: %s", airspy_error_name(rc));
    }
    else
    {
        while ((m_running) && (airspy_is_streaming(m_dev) == AIRSPY_TRUE))
        {
            sleep(1);
        }
    }

    rc = (airspy_error) airspy_stop_rx(m_dev);

    if (rc == AIRSPY_SUCCESS)
    {
        qDebug("AirspyThread::run: stopped Airspy Rx");
    }
    else
    {
        qDebug("AirspyThread::run: failed to stop Airspy Rx: %s", airspy_error_name(rc));
    }

    m_running = false;
}

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rx_callback()

int AirspyThread::rx_callback ( airspy_transfer_t *  transfer )

staticprivate

Definition at line 209 of file airspythread.cpp.

References callback(), and m_this.

Referenced by run().

{
    qint32 bytes_to_write = transfer->sample_count * sizeof(qint16);
    m_this->callback((qint16 *) transfer->samples, bytes_to_write);
    return 0;
}

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setFcPos()

void AirspyThread::setFcPos

(

int

fcPos

)

Definition at line 74 of file airspythread.cpp.

References m_fcPos.

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

{
    m_fcPos = fcPos;
}

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setLog2Decimation()

void AirspyThread::setLog2Decimation

(

unsigned int

log2_decim

)

Definition at line 69 of file airspythread.cpp.

References m_log2Decim.

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

{
    m_log2Decim = log2_decim;
}

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setSamplerate()

void AirspyThread::setSamplerate

(

uint32_t

samplerate

)

Definition at line 64 of file airspythread.cpp.

References m_samplerate.

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

{
    m_samplerate = samplerate;
}

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startWork()

void AirspyThread::startWork

(

)

Definition at line 48 of file airspythread.cpp.

References m_running, m_startWaiter, and m_startWaitMutex.

Referenced by AirspyInput::start().

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

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stopWork()

void AirspyThread::stopWork

(

)

Definition at line 57 of file airspythread.cpp.

References m_running.

Referenced by AirspyInput::stop(), and ~AirspyThread().

{
    qDebug("AirspyThread::stopWork");
    m_running = false;
    wait();
}

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Member Data Documentation

m_buf

qint16 AirspyThread::m_buf[2 *AIRSPY_BLOCKSIZE]

private

Definition at line 50 of file airspythread.h.

Referenced by AirspyThread().

m_convertBuffer

SampleVector AirspyThread::m_convertBuffer

private

Definition at line 51 of file airspythread.h.

Referenced by callback().

m_decimators

Decimators<qint32, qint16, SDR_RX_SAMP_SZ, 12> AirspyThread::m_decimators

private

Definition at line 59 of file airspythread.h.

Referenced by callback().

m_dev

struct airspy_device* AirspyThread::m_dev

private

Definition at line 49 of file airspythread.h.

Referenced by run().

m_fcPos

int AirspyThread::m_fcPos

private

Definition at line 56 of file airspythread.h.

Referenced by callback(), and setFcPos().

m_log2Decim

unsigned int AirspyThread::m_log2Decim

private

Definition at line 55 of file airspythread.h.

Referenced by callback(), and setLog2Decimation().

m_running

bool AirspyThread::m_running

private

Definition at line 47 of file airspythread.h.

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

m_sampleFifo

SampleSinkFifo* AirspyThread::m_sampleFifo

private

Definition at line 52 of file airspythread.h.

Referenced by callback().

m_samplerate

int AirspyThread::m_samplerate

private

Definition at line 54 of file airspythread.h.

Referenced by setSamplerate().

m_startWaiter

QWaitCondition AirspyThread::m_startWaiter

private

Definition at line 46 of file airspythread.h.

Referenced by run(), and startWork().

m_startWaitMutex

QMutex AirspyThread::m_startWaitMutex

private

Definition at line 45 of file airspythread.h.

Referenced by startWork().

m_this

AirspyThread * AirspyThread::m_this = 0

staticprivate

Definition at line 57 of file airspythread.h.

Referenced by AirspyThread(), rx_callback(), and ~AirspyThread().

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

• plugins/samplesource/airspy/airspythread.h
• plugins/samplesource/airspy/airspythread.cpp