From 788673891d506405e34e31fc14d0cf4b86a8eec2 Mon Sep 17 00:00:00 2001 From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com> Date: Tue, 21 Apr 2026 19:54:56 +0000 Subject: [PATCH] Fix USRP TX buffer handling for high interpolation Agent-Logs-Url: https://github.com/srcejon/sdrangel/sessions/bafbe6fb-a6ec-4ee0-92f8-caa27da815f5 Co-authored-by: srcejon <57259258+srcejon@users.noreply.github.com> --- plugins/samplesink/usrpoutput/usrpoutputthread.cpp | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/plugins/samplesink/usrpoutput/usrpoutputthread.cpp b/plugins/samplesink/usrpoutput/usrpoutputthread.cpp index 3037442b6..9dd536692 100644 --- a/plugins/samplesink/usrpoutput/usrpoutputthread.cpp +++ b/plugins/samplesink/usrpoutput/usrpoutputthread.cpp @@ -41,7 +41,7 @@ USRPOutputThread::USRPOutputThread(uhd::tx_streamer::sptr stream, size_t bufSamp USRPOutputThread::~USRPOutputThread() { stopWork(); - delete m_buf; + delete[] m_buf; } void USRPOutputThread::startWork() @@ -123,6 +123,10 @@ void USRPOutputThread::run() // Interpolate according to specified log2 (ex: log2=4 => decim=16) void USRPOutputThread::callback(qint16* buf, qint32 len) { + // Fill any sample tail not overwritten by interpolation (for non power-of-two streamer block sizes) + // so stale data is never transmitted. + std::fill(buf, buf + (2 * len), 0); + SampleVector& data = m_sampleFifo->getData(); unsigned int iPart1Begin, iPart1End, iPart2Begin, iPart2End; m_sampleFifo->read(len/(1<