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added invert iq option

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AlexandreRouma 2022-09-27 15:43:33 +02:00
parent f49fbd2a73
commit c95c7b18af
4 changed files with 20 additions and 0 deletions
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1
core/src/core.cpp
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@ -214,6 +214,7 @@ int sdrpp_main(int argc, char* argv[]) {
defConfig["source"] = "";
defConfig["decimationPower"] = 0;
defConfig["iqCorrection"] = false;
defConfig["invertIQ"] = false;
defConfig["streams"]["Radio"]["muted"] = false;
defConfig["streams"]["Radio"]["sink"] = "Audio";

10
core/src/gui/menus/source.cpp
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@ -13,6 +13,7 @@ namespace sourcemenu {
double effectiveOffset = 0.0;
int decimationPower = 0;
bool iqCorrection = false;
bool invertIQ = false;
EventHandler<std::string> sourceRegisteredHandler;
EventHandler<std::string> sourceUnregisterHandler;
@ -138,7 +139,9 @@ namespace sourcemenu {
offsetMode = core::configManager.conf["offsetMode"];
decimationPower = core::configManager.conf["decimationPower"];
iqCorrection = core::configManager.conf["iqCorrection"];
invertIQ = core::configManager.conf["invertIQ"];
sigpath::iqFrontEnd.setDCBlocking(iqCorrection);
sigpath::iqFrontEnd.setInvertIQ(invertIQ);
updateOffset();
refreshSources();
@ -180,6 +183,13 @@ namespace sourcemenu {
core::configManager.release(true);
}
if (ImGui::Checkbox("Invert IQ##_sdrpp_inv_iq", &invertIQ)) {
sigpath::iqFrontEnd.setInvertIQ(invertIQ);
core::configManager.acquire();
core::configManager.conf["invertIQ"] = invertIQ;
core::configManager.release(true);
}
ImGui::LeftLabel("Offset mode");
ImGui::SetNextItemWidth(itemWidth - ImGui::GetCursorPosX());
if (ImGui::Combo("##_sdrpp_offset_mode", &offsetMode, offsetModesTxt)) {

6
core/src/signal_path/iq_frontend.cpp
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@ -31,10 +31,12 @@ void IQFrontEnd::init(dsp::stream<dsp::complex_t>* in, double sampleRate, bool b
decim.init(NULL, _decimRatio);
dcBlock.init(NULL, genDCBlockRate(effectiveSr));
conjugate.init(NULL);
preproc.init(&inBuf.out);
preproc.addBlock(&decim, _decimRatio > 1);
preproc.addBlock(&dcBlock, dcBlocking);
preproc.addBlock(&conjugate, false); // TODO: Replace by parameter
split.init(preproc.out);
@ -123,6 +125,10 @@ void IQFrontEnd::setDCBlocking(bool enabled) {
preproc.setBlockEnabled(&dcBlock, enabled, [=](dsp::stream<dsp::complex_t>* out){ split.setInput(out); });
}
void IQFrontEnd::setInvertIQ(bool enabled) {
preproc.setBlockEnabled(&conjugate, enabled, [=](dsp::stream<dsp::complex_t>* out){ split.setInput(out); });
}
void IQFrontEnd::bindIQStream(dsp::stream<dsp::complex_t>* stream) {
split.bindStream(stream);
}

3
core/src/signal_path/iq_frontend.h
View File

@ -7,6 +7,7 @@
#include "../dsp/routing/splitter.h"
#include "../dsp/channel/rx_vfo.h"
#include "../dsp/sink/handler_sink.h"
#include "../dsp/math/conjugate.h"
#include <fftw3.h>
class IQFrontEnd {
@ -27,6 +28,7 @@ public:
void setBuffering(bool enabled);
void setDecimation(int ratio);
void setInvertIQ(bool enabled);
void setDCBlocking(bool enabled);
void bindIQStream(dsp::stream<dsp::complex_t>* stream);
@ -65,6 +67,7 @@ protected:
// Pre-processing chain
dsp::multirate::PowerDecimator<dsp::complex_t> decim;
dsp::math::Conjugate conjugate;
dsp::correction::DCBlocker<dsp::complex_t> dcBlock;
dsp::chain<dsp::complex_t> preproc;