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Harden USRP callback interpolation factor and length handling

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Agent-Logs-Url: https://github.com/srcejon/sdrangel/sessions/bafbe6fb-a6ec-4ee0-92f8-caa27da815f5

Co-authored-by: srcejon <57259258+srcejon@users.noreply.github.com>
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copilot-swe-agent[bot] 2026-04-21 19:56:15 +00:00 committed by GitHub
parent 98fbb5ae28
commit ebbfd76504
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1 changed files with 8 additions and 3 deletions
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11
plugins/samplesink/usrpoutput/usrpoutputthread.cpp
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@ -123,22 +123,27 @@ void USRPOutputThread::run()
// Interpolate according to specified log2 (ex: log2=4 => decim=16)
void USRPOutputThread::callback(qint16* buf, qint32 len)
{
if (len <= 0) {
return;
}
const unsigned int interpolationFactor = 1U << m_log2Interp;
SampleVector& data = m_sampleFifo->getData();
unsigned int iPart1Begin, iPart1End, iPart2Begin, iPart2End;
m_sampleFifo->read(len/(1<<m_log2Interp), iPart1Begin, iPart1End, iPart2Begin, iPart2End);
m_sampleFifo->read(static_cast<unsigned int>(len)/interpolationFactor, iPart1Begin, iPart1End, iPart2Begin, iPart2End);
if (iPart1Begin != iPart1End) {
callbackPart(buf, data, iPart1Begin, iPart1End);
}
unsigned int shift = (iPart1End - iPart1Begin)*(1<<m_log2Interp);
unsigned int shift = (iPart1End - iPart1Begin)*interpolationFactor;
if (iPart2Begin != iPart2End) {
callbackPart(buf + 2*shift, data, iPart2Begin, iPart2End);
}
const unsigned int writtenSamples =
((iPart1End - iPart1Begin) + (iPart2End - iPart2Begin)) * (1U << m_log2Interp);
((iPart1End - iPart1Begin) + (iPart2End - iPart2Begin)) * interpolationFactor;
if (writtenSamples < static_cast<unsigned int>(len))
{