comicsansg/CubicSDR
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CubicSDR
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TH_CLEAN_3: Use of non-blocking try_pop() when possible, 

AudioThread concurrent access hardening and simplified,
and misc.
This commit is contained in:
vsonnier 2016-07-05 21:43:45 +02:00
parent 3bf17d0f40
commit b495b388c9
16 changed files with 223 additions and 149 deletions
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4
src/AppFrame.cpp
View File

@ -806,11 +806,11 @@ void AppFrame::OnMenu(wxCommandEvent& event) {
#endif
else if (event.GetId() == wxID_SDR_START_STOP) {
if (!wxGetApp().getSDRThread()->isTerminated()) {
wxGetApp().stopDevice(true);
wxGetApp().stopDevice(true, 2000);
} else {
SDRDeviceInfo *dev = wxGetApp().getDevice();
if (dev != nullptr) {
wxGetApp().setDevice(dev);
wxGetApp().setDevice(dev, 0);
}
}
} else if (event.GetId() == wxID_LOW_PERF) {

44
src/CubicSDR.cpp
View File

@ -133,8 +133,8 @@ long long strToFrequency(std::string freqStr) {
}
CubicSDR::CubicSDR() : appframe(NULL), m_glContext(NULL), frequency(0), offset(0), ppm(0), snap(1), sampleRate(DEFAULT_SAMPLE_RATE),
sdrThread(NULL), sdrPostThread(NULL), spectrumVisualThread(NULL), demodVisualThread(NULL), pipeSDRIQData(NULL), pipeIQVisualData(NULL), pipeAudioVisualData(NULL), t_SDR(NULL), t_PostSDR(NULL) {
CubicSDR::CubicSDR() : frequency(0), offset(0), ppm(0), snap(1), sampleRate(DEFAULT_SAMPLE_RATE),agcMode(false)
{
sampleRateInitialized.store(false);
agcMode.store(true);
soloMode.store(false);
@ -289,22 +289,24 @@ int CubicSDR::OnExit() {
stopRig();
}
#endif
demodMgr.terminateAll();
//The thread feeding them all should be terminated first, so:
std::cout << "Terminating SDR thread.." << std::endl;
sdrThread->terminate();
sdrThread->isTerminated(1000);
sdrThread->isTerminated(3000);
if (t_SDR) {
t_SDR->join();
delete t_SDR;
t_SDR = nullptr;
}
std::cout << "Terminating SDR post-processing thread.." << std::endl;
sdrPostThread->terminate();
std::cout << "Terminating All Demodulators.." << std::endl;
demodMgr.terminateAll();
std::cout << "Terminating Visual Processor threads.." << std::endl;
spectrumVisualThread->terminate();
demodVisualThread->terminate();
@ -542,16 +544,11 @@ void CubicSDR::setSampleRate(long long rate_in) {
}
}
void CubicSDR::stopDevice(bool store) {
if (store) {
stoppedDev = sdrThread->getDevice();
} else {
stoppedDev = nullptr;
}
sdrThread->setDevice(nullptr);
void CubicSDR::stopDevice(bool store, int waitMsForTermination) {
//Firt we must stop the threads
sdrThread->terminate();
sdrThread->isTerminated(1000);
sdrThread->isTerminated(waitMsForTermination);
if (t_SDR) {
t_SDR->join();
@ -559,6 +556,15 @@ void CubicSDR::stopDevice(bool store) {
t_SDR = nullptr;
}
//Only now we can nullify devices
if (store) {
stoppedDev = sdrThread->getDevice();
}
else {
stoppedDev = nullptr;
}
sdrThread->setDevice(nullptr);
}
void CubicSDR::reEnumerateDevices() {
@ -568,10 +574,10 @@ void CubicSDR::reEnumerateDevices() {
t_SDREnum = new std::thread(&SDREnumerator::threadMain, sdrEnum);
}
void CubicSDR::setDevice(SDRDeviceInfo *dev) {
void CubicSDR::setDevice(SDRDeviceInfo *dev, int waitMsForTermination) {
sdrThread->terminate();
sdrThread->isTerminated(1000);
sdrThread->isTerminated(waitMsForTermination);
if (t_SDR) {
t_SDR->join();

44
src/CubicSDR.h
View File

@ -98,8 +98,8 @@ public:
long long getSampleRate();
std::vector<SDRDeviceInfo *> *getDevices();
void setDevice(SDRDeviceInfo *dev);
void stopDevice(bool store);
void setDevice(SDRDeviceInfo *dev, int waitMsForTermination);
void stopDevice(bool store, int waitMsForTermination);
SDRDeviceInfo * getDevice();
ScopeVisualProcessor *getScopeProcessor();
@ -173,10 +173,10 @@ public:
private:
int FilterEvent(wxEvent& event);
AppFrame *appframe;
AppFrame *appframe = nullptr;
AppConfig config;
PrimaryGLContext *m_glContext;
std::vector<SDRDeviceInfo *> *devs;
PrimaryGLContext *m_glContext = nullptr;
std::vector<SDRDeviceInfo *> *devs = nullptr;
DemodulatorMgr demodMgr;
@ -186,27 +186,31 @@ private:
std::atomic_llong sampleRate;
std::atomic_bool agcMode;
SDRThread *sdrThread;
SDREnumerator *sdrEnum;
SDRPostThread *sdrPostThread;
SpectrumVisualDataThread *spectrumVisualThread;
SpectrumVisualDataThread *demodVisualThread;
SDRThread *sdrThread = nullptr;
SDREnumerator *sdrEnum = nullptr;
SDRPostThread *sdrPostThread = nullptr;
SpectrumVisualDataThread *spectrumVisualThread = nullptr;
SpectrumVisualDataThread *demodVisualThread = nullptr;
SDRThreadIQDataQueue* pipeSDRIQData;
DemodulatorThreadInputQueue* pipeIQVisualData;
DemodulatorThreadOutputQueue* pipeAudioVisualData;
DemodulatorThreadInputQueue* pipeDemodIQVisualData;
DemodulatorThreadInputQueue* pipeWaterfallIQVisualData;
DemodulatorThreadInputQueue* pipeActiveDemodIQVisualData;
SDRThreadIQDataQueue* pipeSDRIQData = nullptr;
DemodulatorThreadInputQueue* pipeIQVisualData = nullptr;
DemodulatorThreadOutputQueue* pipeAudioVisualData = nullptr;
DemodulatorThreadInputQueue* pipeDemodIQVisualData = nullptr;
DemodulatorThreadInputQueue* pipeWaterfallIQVisualData = nullptr;
DemodulatorThreadInputQueue* pipeActiveDemodIQVisualData = nullptr;
ScopeVisualProcessor scopeProcessor;
SDRDevicesDialog *deviceSelectorDialog;
SDRDevicesDialog *deviceSelectorDialog = nullptr;
SoapySDR::Kwargs streamArgs;
SoapySDR::Kwargs settingArgs;
std::thread *t_SDR, *t_SDREnum, *t_PostSDR, *t_SpectrumVisual, *t_DemodVisual;
std::thread *t_SDR = nullptr;
std::thread *t_SDREnum = nullptr;
std::thread *t_PostSDR = nullptr;
std::thread *t_SpectrumVisual = nullptr;
std::thread *t_DemodVisual = nullptr;
std::atomic_bool devicesReady;
std::atomic_bool devicesFailed;
std::atomic_bool deviceSelectorOpen;
@ -224,8 +228,8 @@ private:
std::atomic_bool soloMode;
SDRDeviceInfo *stoppedDev;
#ifdef USE_HAMLIB
RigThread* rigThread;
std::thread *t_Rig;
RigThread* rigThread = nullptr;
std::thread *t_Rig = nullptr;
#endif
};

133
src/audio/AudioThread.cpp
View File

@ -6,13 +6,14 @@
#include "DemodulatorThread.h"
#include "DemodulatorInstance.h"
#include <memory.h>
#include <mutex>
std::map<int, AudioThread *> AudioThread::deviceController;
std::map<int, int> AudioThread::deviceSampleRate;
std::map<int, std::thread *> AudioThread::deviceThread;
AudioThread::AudioThread() : IOThread(),
currentInput(NULL), inputQueue(NULL), nBufferFrames(1024), sampleRate(0) {
currentInput(nullptr), inputQueue(nullptr), nBufferFrames(1024), sampleRate(0) {
audioQueuePtr.store(0);
underflowCount.store(0);
@ -29,13 +30,24 @@ AudioThread::~AudioThread() {
delete vBoundThreads;
}
std::recursive_mutex & AudioThread::getMutex()
{
return m_mutex;
}
void AudioThread::bindThread(AudioThread *other) {
std::lock_guard<std::recursive_mutex> lock(m_mutex);
if (std::find(boundThreads.load()->begin(), boundThreads.load()->end(), other) == boundThreads.load()->end()) {
boundThreads.load()->push_back(other);
}
}
void AudioThread::removeThread(AudioThread *other) {
std::lock_guard<std::recursive_mutex> lock(m_mutex);
std::vector<AudioThread *>::iterator i;
i = std::find(boundThreads.load()->begin(), boundThreads.load()->end(), other);
if (i != boundThreads.load()->end()) {
@ -44,6 +56,7 @@ void AudioThread::removeThread(AudioThread *other) {
}
void AudioThread::deviceCleanup() {
std::map<int, AudioThread *>::iterator i;
for (i = deviceController.begin(); i != deviceController.end(); i++) {
@ -53,53 +66,67 @@ void AudioThread::deviceCleanup() {
static int audioCallback(void *outputBuffer, void * /* inputBuffer */, unsigned int nBufferFrames, double /* streamTime */, RtAudioStreamStatus status,
void *userData) {
AudioThread *src = (AudioThread *) userData;
float *out = (float*) outputBuffer;
float *out = (float*)outputBuffer;
//Zero output buffer in all cases: this allow to mute audio if no AudioThread data is
//actually active.
memset(out, 0, nBufferFrames * 2 * sizeof(float));
AudioThread *src = (AudioThread *) userData;
std::lock_guard<std::recursive_mutex> lock(src->getMutex());
if (src->isTerminated()) {
return 1;
}
if (status) {
std::cout << "Audio buffer underflow.." << (src->underflowCount++) << std::endl;
std::cout << "Audio buffer underflow.." << (src->underflowCount++) << std::endl;
}
if (src->boundThreads.load()->empty()) {
return 0;
return 0;
}
float peak = 0.0;
double peak = 0.0;
//for all boundThreads
for (size_t j = 0; j < src->boundThreads.load()->size(); j++) {
AudioThread *srcmix = (*(src->boundThreads.load()))[j];
//lock every single boundThread srcmix in succession the time we process
//its audio samples.
std::lock_guard<std::recursive_mutex> lock(srcmix->getMutex());
if (srcmix->isTerminated() || !srcmix->inputQueue || srcmix->inputQueue->empty() || !srcmix->isActive()) {
continue;
}
if (!srcmix->currentInput) {
srcmix->audioQueuePtr = 0;
if (srcmix->isTerminated() || srcmix->inputQueue->empty()) {
continue;
}
srcmix->inputQueue->pop(srcmix->currentInput);
if (srcmix->isTerminated()) {
if (!srcmix->inputQueue->try_pop(srcmix->currentInput)) {
continue;
}
continue;
}
if (srcmix->currentInput->sampleRate != src->getSampleRate()) {
while (srcmix->inputQueue->size()) {
srcmix->inputQueue->pop(srcmix->currentInput);
while (srcmix->inputQueue->try_pop(srcmix->currentInput)) {
if (srcmix->currentInput) {
if (srcmix->currentInput->sampleRate == src->getSampleRate()) {
break;
}
srcmix->currentInput->decRefCount();
}
srcmix->currentInput = NULL;
}
srcmix->currentInput = nullptr;
} //end while
srcmix->audioQueuePtr = 0;
@ -114,37 +141,35 @@ static int audioCallback(void *outputBuffer, void * /* inputBuffer */, unsigned
srcmix->audioQueuePtr = 0;
if (srcmix->currentInput) {
srcmix->currentInput->decRefCount();
srcmix->currentInput = NULL;
srcmix->currentInput = nullptr;
}
if (srcmix->isTerminated() || srcmix->inputQueue->empty()) {
if (!srcmix->inputQueue->try_pop(srcmix->currentInput)) {
continue;
}
srcmix->inputQueue->pop(srcmix->currentInput);
if (srcmix->isTerminated()) {
continue;
}
}
}
continue;
}
float mixPeak = srcmix->currentInput->peak * srcmix->gain;
double mixPeak = srcmix->currentInput->peak * srcmix->gain;
if (srcmix->currentInput->channels == 1) {
for (unsigned int i = 0; i < nBufferFrames; i++) {
if (srcmix->audioQueuePtr >= srcmix->currentInput->data.size()) {
srcmix->audioQueuePtr = 0;
if (srcmix->currentInput) {
srcmix->currentInput->decRefCount();
srcmix->currentInput = NULL;
srcmix->currentInput = nullptr;
}
if (srcmix->isTerminated() || srcmix->inputQueue->empty()) {
if (!srcmix->inputQueue->try_pop(srcmix->currentInput)) {
break;
}
srcmix->inputQueue->pop(srcmix->currentInput);
if (srcmix->isTerminated()) {
break;
}
float srcPeak = srcmix->currentInput->peak * srcmix->gain;
double srcPeak = srcmix->currentInput->peak * srcmix->gain;
if (mixPeak < srcPeak) {
mixPeak = srcPeak;
}
@ -158,25 +183,25 @@ static int audioCallback(void *outputBuffer, void * /* inputBuffer */, unsigned
}
} else {
for (int i = 0, iMax = srcmix->currentInput->channels * nBufferFrames; i < iMax; i++) {
if (srcmix->audioQueuePtr >= srcmix->currentInput->data.size()) {
srcmix->audioQueuePtr = 0;
if (srcmix->currentInput) {
srcmix->currentInput->decRefCount();
srcmix->currentInput = NULL;
srcmix->currentInput = nullptr;
}
if (srcmix->isTerminated() || srcmix->inputQueue->empty()) {
if (!srcmix->inputQueue->try_pop(srcmix->currentInput)) {
break;
}
srcmix->inputQueue->pop(srcmix->currentInput);
if (srcmix->isTerminated()) {
break;
}
float srcPeak = srcmix->currentInput->peak * srcmix->gain;
double srcPeak = srcmix->currentInput->peak * srcmix->gain;
if (mixPeak < srcPeak) {
mixPeak = srcPeak;
}
}
if (srcmix->currentInput && srcmix->currentInput->data.size()) {
out[i] = out[i] + srcmix->currentInput->data[srcmix->audioQueuePtr] * srcmix->gain;
}
srcmix->audioQueuePtr++;
@ -186,11 +211,15 @@ static int audioCallback(void *outputBuffer, void * /* inputBuffer */, unsigned
peak += mixPeak;
}
//normalize volume
if (peak > 1.0) {
float invPeak = (float)(1.0 / peak);
for (unsigned int i = 0; i < nBufferFrames * 2; i++) {
out[i] /= peak;
out[i] *= invPeak;
}
}
return 0;
}
@ -247,6 +276,7 @@ void AudioThread::enumerateDevices(std::vector<RtAudio::DeviceInfo> &devs) {
}
void AudioThread::setDeviceSampleRate(int deviceId, int sampleRate) {
if (deviceController.find(deviceId) != deviceController.end()) {
AudioThreadCommand refreshDevice;
refreshDevice.cmd = AudioThreadCommand::AUDIO_THREAD_CMD_SET_SAMPLE_RATE;
@ -261,6 +291,8 @@ void AudioThread::setSampleRate(int sampleRate) {
dac.stopStream();
dac.closeStream();
std::lock_guard<std::recursive_mutex> lock(m_mutex);
for (size_t j = 0; j < boundThreads.load()->size(); j++) {
AudioThread *srcmix = (*(boundThreads.load()))[j];
@ -323,6 +355,7 @@ void AudioThread::setupDevice(int deviceId) {
deviceThread[parameters.deviceId] = new std::thread(&AudioThread::threadMain, deviceController[parameters.deviceId]);
} else if (deviceController[parameters.deviceId] == this) {
//Attach callback
dac.openStream(&parameters, NULL, RTAUDIO_FLOAT32, sampleRate, &nBufferFrames, &audioCallback, (void *) this, &opts);
dac.startStream();
} else {
@ -379,6 +412,7 @@ void AudioThread::run() {
inputQueue = static_cast<AudioThreadInputQueue *>(getInputQueue("AudioDataInput"));
//Infinite loop, witing for commands or for termination
while (!stopping) {
AudioThreadCommand command;
cmdQueue.pop(command);
@ -391,20 +425,26 @@ void AudioThread::run() {
}
}
// Drain any remaining inputs
if (inputQueue) while (!inputQueue->empty()) {
AudioThreadInput *ref;
inputQueue->pop(ref);
//Thread termination, prevent fancy things to happen, lock the whole thing:
//This way audioThreadCallback is rightly protected from thread termination
std::lock_guard<std::recursive_mutex> lock(m_mutex);
// Drain any remaining inputs, with a non-blocking pop
AudioThreadInput *ref;
while (inputQueue && inputQueue->try_pop(ref)) {
if (ref) {
ref->decRefCount();
}
}
} //end while
//Nullify currentInput...
if (currentInput) {
currentInput->setRefCount(0);
currentInput = nullptr;
}
//Stop
if (deviceController[parameters.deviceId] != this) {
deviceController[parameters.deviceId]->removeThread(this);
} else {
@ -444,8 +484,9 @@ void AudioThread::setActive(bool state) {
// Activity state changing, clear any inputs
if(inputQueue) {
while (!inputQueue->empty()) { // flush queue
inputQueue->pop(dummy);
while (inputQueue->try_pop(dummy)) { // flush queue, non-blocking pop
if (dummy) {
dummy->decRefCount();
}

6
src/audio/AudioThread.h
View File

@ -88,7 +88,13 @@ private:
AudioThreadCommandQueue cmdQueue;
int sampleRate;
//The own m_mutex protecting this AudioThread
std::recursive_mutex m_mutex;
public:
//give access to the this AudioThread lock
std::recursive_mutex& getMutex();
void bindThread(AudioThread *other);
void removeThread(AudioThread *other);

22
src/demod/DemodulatorPreThread.cpp
View File

@ -210,12 +210,11 @@ void DemodulatorPreThread::run() {
inp->decRefCount();
if (!stopping && !workerResults->empty()) {
while (!workerResults->empty()) {
DemodulatorWorkerThreadResult result;
workerResults->pop(result);
switch (result.cmd) {
DemodulatorWorkerThreadResult result;
//process all worker results until
while (!stopping && workerResults->try_pop(result)) {
switch (result.cmd) {
case DemodulatorWorkerThreadResult::DEMOD_WORKER_THREAD_RESULT_FILTERS:
if (result.iqResampler) {
if (iqResampler) {
@ -258,20 +257,19 @@ void DemodulatorPreThread::run() {
break;
default:
break;
}
}
}
} //end while
if ((cModem != nullptr) && modemSettingsChanged.load()) {
cModem->writeSettings(modemSettingsBuffered);
modemSettingsBuffered.clear();
modemSettingsChanged.store(false);
}
}
} //end while stopping
while (!iqOutputQueue->empty()) {
DemodulatorThreadPostIQData *tmp;
iqOutputQueue->pop(tmp);
DemodulatorThreadPostIQData *tmp;
while (iqOutputQueue->try_pop(tmp)) {
tmp->decRefCount();
}
buffers.purge();

50
src/demod/DemodulatorThread.cpp
View File

@ -250,43 +250,45 @@ void DemodulatorThread::run() {
}
}
if (!threadQueueControl->empty()) {
while (!threadQueueControl->empty()) {
DemodulatorThreadControlCommand command;
threadQueueControl->pop(command);
switch (command.cmd) {
case DemodulatorThreadControlCommand::DEMOD_THREAD_CMD_CTL_SQUELCH_ON:
squelchEnabled = true;
break;
case DemodulatorThreadControlCommand::DEMOD_THREAD_CMD_CTL_SQUELCH_OFF:
squelchEnabled = false;
break;
default:
break;
}
DemodulatorThreadControlCommand command;
//empty command queue, execute commands
while (threadQueueControl->try_pop(command)) {
switch (command.cmd) {
case DemodulatorThreadControlCommand::DEMOD_THREAD_CMD_CTL_SQUELCH_ON:
squelchEnabled = true;
break;
case DemodulatorThreadControlCommand::DEMOD_THREAD_CMD_CTL_SQUELCH_OFF:
squelchEnabled = false;
break;
default:
break;
}
}
inp->decRefCount();
}
// end while !stopping
// Purge any unused inputs
while (!iqInputQueue->empty()) {
DemodulatorThreadPostIQData *ref;
iqInputQueue->pop(ref);
// Purge any unused inputs, with a non-blocking pop
DemodulatorThreadPostIQData *ref;
while (iqInputQueue->try_pop(ref)) {
if (ref) { // May have other consumers; just decrement
ref->decRefCount();
}
}
while (!audioOutputQueue->empty()) {
AudioThreadInput *ref;
audioOutputQueue->pop(ref);
if (ref) { // Originated here; set RefCount to 0
ref->setRefCount(0);
AudioThreadInput *ref_audio;
while (audioOutputQueue->try_pop(ref_audio)) {
if (ref_audio) { // Originated here; set RefCount to 0
ref_audio->setRefCount(0);
}
}
outputBuffers.purge();
// std::cout << "Demodulator thread done." << std::endl;

4
src/demod/DemodulatorWorkerThread.cpp
View File

@ -24,8 +24,12 @@ void DemodulatorWorkerThread::run() {
DemodulatorWorkerThreadCommand command;
bool done = false;
//Beware of the subtility here,
//we are waiting for the first command to show up (blocking!)
//then consuming the commands until done.
while (!done) {
commandQueue->pop(command);
switch (command.cmd) {
case DemodulatorWorkerThreadCommand::DEMOD_WORKER_THREAD_CMD_BUILD_FILTERS:
filterChanged = true;

4
src/forms/SDRDevices/SDRDevices.cpp
View File

@ -314,7 +314,7 @@ void SDRDevicesDialog::OnUseSelected( wxMouseEvent& event) {
devConfig->setStreamOpts(streamArgs);
wxGetApp().setDeviceArgs(settingArgs);
wxGetApp().setStreamArgs(streamArgs);
wxGetApp().setDevice(dev);
wxGetApp().setDevice(dev,0);
Close();
}
@ -483,7 +483,7 @@ void SDRDevicesDialog::doRefreshDevices() {
editId = nullptr;
removeId = nullptr;
dev = nullptr;
wxGetApp().stopDevice(false);
wxGetApp().stopDevice(false, 2000);
devTree->DeleteAllItems();
devTree->Disable();
m_propertyGrid->Clear();

1
src/process/FFTDataDistributor.cpp
View File

@ -17,6 +17,7 @@ unsigned int FFTDataDistributor::getLinesPerSecond() {
}
void FFTDataDistributor::process() {
while (!input->empty()) {
if (!isAnyOutputEmpty()) {
return;

10
src/process/ScopeVisualProcessor.cpp
View File

@ -68,10 +68,10 @@ void ScopeVisualProcessor::process() {
if (!isOutputEmpty()) {
return;
}
if (!input->empty()) {
AudioThreadInput *audioInputData;
input->pop(audioInputData);
AudioThreadInput *audioInputData;
if (input->try_pop(audioInputData)) {
if (!audioInputData) {
return;
}
@ -271,5 +271,5 @@ void ScopeVisualProcessor::process() {
} else {
delete audioInputData; //->decRefCount();
}
}
} //end if try_pop()
}

11
src/sdr/SDRPostThread.cpp
View File

@ -215,11 +215,14 @@ void SDRPostThread::run() {
if (doUpdate) {
updateActiveDemodulators();
}
}
} //end while
if (iqVisualQueue && !iqVisualQueue->empty()) {
DemodulatorThreadIQData *visualDataDummy;
iqVisualQueue->pop(visualDataDummy);
//TODO: Why only 1 element was removed before ?
DemodulatorThreadIQData *visualDataDummy;
while (iqVisualQueue && iqVisualQueue->try_pop(visualDataDummy)) {
//nothing
//TODO: What about the refcounts ?
}
// buffers.purge();

10
src/sdr/SoapySDRThread.cpp
View File

@ -162,6 +162,7 @@ void SDRThread::readStream(SDRThreadIQDataQueue* iqDataOutQueue) {
int nElems = numElems.load();
int mtElems = mtuElems.load();
//If overflow occured on the previous readStream(), transfer it in inpBuffer now
if (numOverflow > 0) {
int n_overflow = numOverflow;
if (n_overflow > nElems) {
@ -176,9 +177,18 @@ void SDRThread::readStream(SDRThreadIQDataQueue* iqDataOutQueue) {
}
}
//attempt readStream() at most nElems, by mtElems-sized chunks, append inpBuffer.
while (n_read < nElems && !stopping) {
int n_requested = nElems-n_read;
int n_stream_read = device->readStream(stream, buffs, mtElems, flags, timeNs);
//if the n_stream_read <= 0, bail out from reading.
if (n_stream_read <= 0) {
break;
}
//sucess read beyond nElems, with overflow
if ((n_read + n_stream_read) > nElems) {
memcpy(&inpBuffer.data[n_read], buffs[0], n_requested * sizeof(float) * 2);
numOverflow = n_stream_read-n_requested;

9
src/visual/ScopeCanvas.cpp
View File

@ -97,11 +97,10 @@ bool ScopeCanvas::getShowDb() {
void ScopeCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
wxPaintDC dc(this);
const wxSize ClientSize = GetClientSize();
while (!inputData.empty()) {
ScopeRenderData *avData;
inputData.pop(avData);
ScopeRenderData *avData;
while (inputData.try_pop(avData)) {
if (!avData->spectrum) {
scopePanel.setMode(avData->mode);

8
src/visual/SpectrumCanvas.cpp
View File

@ -51,11 +51,9 @@ void SpectrumCanvas::OnPaint(wxPaintEvent& WXUNUSED(event)) {
wxPaintDC dc(this);
const wxSize ClientSize = GetClientSize();
if (!visualDataQueue.empty()) {
SpectrumVisualData *vData;
visualDataQueue.pop(vData);
SpectrumVisualData *vData;
if (visualDataQueue.try_pop(vData)) {
if (vData) {
spectrumPanel.setPoints(vData->spectrum_points);
spectrumPanel.setPeakPoints(vData->spectrum_hold_points);

12
src/visual/WaterfallCanvas.cpp
View File

@ -95,8 +95,8 @@ void WaterfallCanvas::processInputQueue() {
if (lpsIndex >= targetVis) {
while (lpsIndex >= targetVis) {
SpectrumVisualData *vData;
if (!visualDataQueue.empty()) {
visualDataQueue.pop(vData);
if (visualDataQueue.try_pop(vData)) {
if (vData) {
if (vData->spectrum_points.size() == fft_size * 2) {
@ -912,11 +912,13 @@ void WaterfallCanvas::updateCenterFrequency(long long freq) {
void WaterfallCanvas::setLinesPerSecond(int lps) {
std::lock_guard < std::mutex > lock(tex_update);
linesPerSecond = lps;
while (!visualDataQueue.empty()) {
SpectrumVisualData *vData;
visualDataQueue.pop(vData);
//empty all
SpectrumVisualData *vData;
while (visualDataQueue.try_pop(vData)) {
if (vData) {
vData->decRefCount();
}