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-rw-r--r--src/DabModulator.cpp74
1 files changed, 50 insertions, 24 deletions
diff --git a/src/DabModulator.cpp b/src/DabModulator.cpp
index 4a29132..d48f1a2 100644
--- a/src/DabModulator.cpp
+++ b/src/DabModulator.cpp
@@ -142,14 +142,14 @@ int DabModulator::process(Buffer* dataOut)
auto cifMux = make_shared<FrameMultiplexer>(m_etiSource);
auto cifPart = make_shared<BlockPartitioner>(mode);
- auto cifMap = make_shared<QpskSymbolMapper>(m_nbCarriers);
- auto cifRef = make_shared<PhaseReference>(mode);
- auto cifFreq = make_shared<FrequencyInterleaver>(mode);
- auto cifDiff = make_shared<DifferentialModulator>(m_nbCarriers);
+ auto cifMap = make_shared<QpskSymbolMapper>(m_nbCarriers, m_settings.fixedPoint);
+ auto cifRef = make_shared<PhaseReference>(mode, m_settings.fixedPoint);
+ auto cifFreq = make_shared<FrequencyInterleaver>(mode, m_settings.fixedPoint);
+ auto cifDiff = make_shared<DifferentialModulator>(m_nbCarriers, m_settings.fixedPoint);
- auto cifNull = make_shared<NullSymbol>(m_nbCarriers);
- auto cifSig = make_shared<SignalMultiplexer>(
- (1 + m_nbSymbols) * m_nbCarriers * sizeof(complexf));
+ auto cifNull = make_shared<NullSymbol>(m_nbCarriers,
+ m_settings.fixedPoint ? sizeof(complexfix) : sizeof(complexf));
+ auto cifSig = make_shared<SignalMultiplexer>();
// TODO this needs a review
bool useCicEq = false;
@@ -182,44 +182,66 @@ int DabModulator::process(Buffer* dataOut)
m_settings.dabMode,
m_settings.tiiConfig);
rcs.enrol(tii.get());
- tiiRef = make_shared<PhaseReference>(mode);
+ tiiRef = make_shared<PhaseReference>(mode, m_settings.fixedPoint);
}
catch (const TIIError& e) {
etiLog.level(error) << "Could not initialise TII: " << e.what();
}
- auto cifOfdm = make_shared<OfdmGenerator>(
- (1 + m_nbSymbols),
- m_nbCarriers,
- m_spacing,
- m_settings.enableCfr,
- m_settings.cfrClip,
- m_settings.cfrErrorClip);
+ shared_ptr<ModPlugin> cifOfdm;
+
+ if (m_settings.fixedPoint) {
+ cifOfdm = make_shared<OfdmGeneratorFixed>(
+ (1 + m_nbSymbols),
+ m_nbCarriers,
+ m_spacing,
+ m_settings.enableCfr,
+ m_settings.cfrClip,
+ m_settings.cfrErrorClip);
+ }
+ else {
+ auto ofdm = make_shared<OfdmGeneratorCF32>(
+ (1 + m_nbSymbols),
+ m_nbCarriers,
+ m_spacing,
+ m_settings.enableCfr,
+ m_settings.cfrClip,
+ m_settings.cfrErrorClip);
+
+ rcs.enrol(ofdm.get());
+ cifOfdm = ofdm;
+ }
- rcs.enrol(cifOfdm.get());
+ shared_ptr<GainControl> cifGain;
- auto cifGain = make_shared<GainControl>(
- m_spacing,
- m_settings.gainMode,
- m_settings.digitalgain,
- m_settings.normalise,
- m_settings.gainmodeVariance);
+ if (not m_settings.fixedPoint) {
+ cifGain = make_shared<GainControl>(
+ m_spacing,
+ m_settings.gainMode,
+ m_settings.digitalgain,
+ m_settings.normalise,
+ m_settings.gainmodeVariance);
- rcs.enrol(cifGain.get());
+ rcs.enrol(cifGain.get());
+ }
auto cifGuard = make_shared<GuardIntervalInserter>(
m_nbSymbols, m_spacing, m_nullSize, m_symSize,
- m_settings.ofdmWindowOverlap);
+ m_settings.ofdmWindowOverlap, m_settings.fixedPoint);
rcs.enrol(cifGuard.get());
shared_ptr<FIRFilter> cifFilter;
if (not m_settings.filterTapsFilename.empty()) {
+ if (m_settings.fixedPoint) throw std::runtime_error("fixed point doesn't support fir filter");
+
cifFilter = make_shared<FIRFilter>(m_settings.filterTapsFilename);
rcs.enrol(cifFilter.get());
}
shared_ptr<MemlessPoly> cifPoly;
if (not m_settings.polyCoefFilename.empty()) {
+ if (m_settings.fixedPoint) throw std::runtime_error("fixed point doesn't support predistortion");
+
cifPoly = make_shared<MemlessPoly>(m_settings.polyCoefFilename,
m_settings.polyNumThreads);
rcs.enrol(cifPoly.get());
@@ -227,6 +249,8 @@ int DabModulator::process(Buffer* dataOut)
shared_ptr<Resampler> cifRes;
if (m_settings.outputRate != 2048000) {
+ if (m_settings.fixedPoint) throw std::runtime_error("fixed point doesn't support resampler");
+
cifRes = make_shared<Resampler>(
2048000,
m_settings.outputRate,
@@ -234,6 +258,8 @@ int DabModulator::process(Buffer* dataOut)
}
if (not m_format.empty()) {
+ if (m_settings.fixedPoint) throw std::runtime_error("fixed point doesn't support format converter");
+
m_formatConverter = make_shared<FormatConverter>(m_format);
}