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HackRF output: set FIFO size to 0.25s or 150 kS whichever is larger (600kS/s knee)

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f4exb
2017-08-08 22:37:53 +02:00
parent 7b851e8326
commit 3a9eec8463
4 changed files with 11 additions and 8 deletions
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plugins/samplesink/hackrfoutput/hackrfoutput.cpp
+5 -6
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@@ -25,7 +25,7 @@
#include "dsp/dspengine.h"
#include "device/devicesourceapi.h"
#include "device/devicesinkapi.h"
#include "hackrf/devicehackrfshared.h"
#include "hackrfoutputgui.h"
#include "hackrfoutputthread.h"
@@ -242,11 +242,10 @@ bool HackRFOutput::applySettings(const HackRFOutputSettings& settings, bool forc
if ((m_settings.m_devSampleRate != settings.m_devSampleRate) || (m_settings.m_log2Interp != settings.m_log2Interp) || force)
{
forwardChange = true;
// FIFO size:
// 1 s length up to interpolation by 16
// 2 s for interpolation by 32
m_sampleSourceFifo.resize(settings.m_devSampleRate/(1<<(settings.m_log2Interp <= 4 ? settings.m_log2Interp : 4)));
int fifoSize = std::max(
(int) ((settings.m_devSampleRate/(1<<settings.m_log2Interp)) * DeviceHackRFShared::m_sampleFifoLengthInSeconds),
DeviceHackRFShared::m_sampleFifoMinSize);
m_sampleSourceFifo.resize(fifoSize);
}
if ((m_settings.m_devSampleRate != settings.m_devSampleRate) || force)