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BladeRF2 input: do not re-create the thread if there are no more channels active

This commit is contained in:
f4exb 2018-09-27 06:37:31 +02:00
parent d5a33b7448
commit 7078cd868e
2 changed files with 25 additions and 8 deletions
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30
plugins/samplesource/bladerf2input/bladerf2input.cpp
View File

@ -385,7 +385,7 @@ void BladeRF2Input::stop()
//
// If the thread is currently managing many channels (MI mode) and we are removing the last channel. The transition
// from MI to SI or reduction of MI size is handled by stopping the thread, deleting it and creating a new one
// with one channel less. Then the channel is closed (disabled).
// with one channel less if (and only if) there is still a channel active.
//
// If the thread is currently managing many channels (MI mode) but the channel being stopped is not the last
// channel then the FIFO reference is simply removed from the thread so that it will not stream into this FIFO
@ -430,23 +430,34 @@ void BladeRF2Input::stop()
SampleSinkFifo **fifos = new SampleSinkFifo*[nbOriginalChannels-1];
unsigned int *log2Decims = new unsigned int[nbOriginalChannels-1];
int *fcPoss = new int[nbOriginalChannels-1];
bool stillActiveFIFO = false;
for (int i = 0; i < nbOriginalChannels-1; i++) // save original FIFO references
{
fifos[i] = bladerf2InputThread->getFifo(i);
stillActiveFIFO = stillActiveFIFO || (bladerf2InputThread->getFifo(i) != 0);
log2Decims[i] = bladerf2InputThread->getLog2Decimation(i);
fcPoss[i] = bladerf2InputThread->getFcPos(i);
}
delete bladerf2InputThread;
bladerf2InputThread = new BladeRF2InputThread(m_deviceShared.m_dev->getDev(), nbOriginalChannels-1);
m_thread = bladerf2InputThread; // take ownership
m_thread = 0;
for (int i = 0; i < nbOriginalChannels-1; i++) // restore original FIFO references
if (stillActiveFIFO)
{
bladerf2InputThread->setFifo(i, fifos[i]);
bladerf2InputThread->setLog2Decimation(i, log2Decims[i]);
bladerf2InputThread->setFcPos(i, fcPoss[i]);
bladerf2InputThread = new BladeRF2InputThread(m_deviceShared.m_dev->getDev(), nbOriginalChannels-1);
m_thread = bladerf2InputThread; // take ownership
for (int i = 0; i < nbOriginalChannels-1; i++) // restore original FIFO references
{
bladerf2InputThread->setFifo(i, fifos[i]);
bladerf2InputThread->setLog2Decimation(i, log2Decims[i]);
bladerf2InputThread->setFcPos(i, fcPoss[i]);
}
}
else
{
qDebug("BladeRF2Input::stop: do not re-create thread as there are no more FIFOs active");
}
// remove old thread address from buddies (reset in all buddies)
@ -458,7 +469,10 @@ void BladeRF2Input::stop()
}
m_deviceShared.m_dev->closeRx(requestedChannel); // close the last channel
bladerf2InputThread->startWork();
if (stillActiveFIFO) {
bladerf2InputThread->startWork();
}
}
else // remove channel from existing thread
{

3
plugins/samplesource/bladerf2input/bladerf2inputthread.cpp
View File

@ -22,6 +22,7 @@ BladeRF2InputThread::BladeRF2InputThread(struct bladerf* dev, unsigned int nbRxC
m_dev(dev),
m_nbChannels(nbRxChannels)
{
qDebug("BladeRF2InputThread::BladeRF2InputThread");
m_channels = new Channel[nbRxChannels];
for (unsigned int i = 0; i < nbRxChannels; i++) {
@ -86,6 +87,7 @@ void BladeRF2InputThread::run()
}
else
{
qDebug("BladeRF2InputThread::run: start running loop");
while (m_running)
{
res = bladerf_sync_rx(m_dev, m_buf, DeviceBladeRF2::blockSize, NULL, 10000);
@ -102,6 +104,7 @@ void BladeRF2InputThread::run()
callbackSI(m_buf, 2*DeviceBladeRF2::blockSize);
}
}
qDebug("BladeRF2InputThread::run: stop running loop");
}
}
else