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Cleaner management of the device not accepting the requested sample rate

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This commit is contained in:
vsonnier 2020-11-21 11:52:34 +01:00
parent 155862f703
commit 7b1956f7cd
1 changed files with 24 additions and 4 deletions
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28
src/sdr/SoapySDRThread.cpp
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@ -479,9 +479,14 @@ void SDRThread::updateSettings() {
device->deactivateStream(stream);
//2. Set the (new) sample rate
device->setSampleRate(SOAPY_SDR_RX, 0, sampleRate.load());
try {
device->setSampleRate(SOAPY_SDR_RX, 0, sampleRate.load());
}
catch (...) {
std::cout << "SDRThread: Exception while setting the sample rate = " << sampleRate.load() << std::endl << std::flush;
}
//2.2 Device-specific workarounds:
//2.3 Device-specific workarounds:
// TODO: explore bandwidth setting option to see if this is necessary for others
if (device->getDriverKey() == "bladeRF") {
device->setBandwidth(SOAPY_SDR_RX, 0, sampleRate.load());
@ -491,8 +496,23 @@ void SDRThread::updateSettings() {
device->activateStream(stream);
//4. Re-do Cubic buffers :
//re-read current sample rate and MTU:
sampleRate.store(device->getSampleRate(SOAPY_SDR_RX, 0));
//4.1. re-read current sample rate and MTU:
//4.2. The device MAY force another sample rate than the one requested, or refusing the change altogether,
// because of limitations of hardware and the SoapySDR river
double requested_sample_rate = (double)sampleRate.load();
double applied_sample_rate = device->getSampleRate(SOAPY_SDR_RX, 0);
if (abs((requested_sample_rate - applied_sample_rate) / requested_sample_rate) > 0.05) {
//force the applied_sample_rate as the new effective user setting
DeviceConfig* devConfig = deviceConfig.load();
if (devConfig) {
devConfig->setSampleRate(applied_sample_rate);
}
std::cout << "SDRThread: WARNING Requested sample rate is " << requested_sample_rate << " but " << applied_sample_rate << " was applied." <<std::endl << std::flush;
}
sampleRate.store(applied_sample_rate);
numChannels.store(getOptimalChannelCount(sampleRate.load()));
numElems.store(getOptimalElementCount(sampleRate.load(), TARGET_DISPLAY_FPS));